2nd WORKSHOP ON GEOTECHNICAL EARTHQUAKE ENGINEERING

 

(Photos from the workshop and short course: Part 1 Part 2 Part 3 Part 4)

“DEALING WITH THE CONSEQUENCES OF LIQUEFACTION”

HONORING THE LIFETIME ACHIEVEMENTS AND CONTRIBUTIONS OF PROF. KENJI ISHIHARA

Organized by the Earthquake Engineering Research Institute (EERI) San Diego Chapter, University of California San Diego Extension, and Geo-Institute San Diego Chapter.

Wednesday-Thursday, March 29-30, 2017
8:00am – 5:00pm

 

 

 

 

 

 

Speakers (Presentation Files):

• I.M. Idriss (Professor Emeritus, University of California, Davis) Bio
  EVALUATION OF EARTHQUAKE GROUND MOTIONS AT SOFT SOIL SITES
• Fumio Tatsuoka (Tokyo University of Science; Prof. Emeritus University of Tokyo) Bio Abstract
  Soil compaction and its effects on the mechanical properties of compacted soil
• Ross Boulanger (University of California, Davis) Bio Abstract
  Seismic response of an embankment on loose sand treated with soil-cement panels: Centrifuge tests and numerical analyses
• Peter K. Robertson (Gregg Drilling and Testing, Inc.) Bio Abstract
  Influence of depth of liquefaction on estimated settlements
• Lisheng Shao (Hayward Baker, Inc.) Bio Abstract
  Quality Control for Liquefaction Mitigation
• David Yang (JAFEC USA, Inc.) Bio Abstract
  Application of Multi-Shaft Deep Mixing for Seismic Remediation of Earth Dams – Historical Review from Jackson Lake Dam to Perris Lake Dam
• Juan Baez (Advanced Geosolutions, Inc.) Bio and Abstract
  On the Performance of Ground Improvement during Strong Earthquakes – Observations and Lessons Learned
• Sonja Zlatovich (Zagreb University of Applied Sciences, Croatia) Bio Abstract
  Prof. Ishihara in Croatia
• Daniel Pradel (The Ohio State University) Bio Abstract
  Landslide Movement at Lokanthali during the Mw = 7.8 Gorkha (Nepal) Earthquake of April 25 2015
• Ramon Verdugo (CMGI Ltda., Former President of the Chilean Geotechnical Society) Bio Abstract
  Critical analyses of the available methods to assess soil liquefaction potential
• Marte Gutierrez (James R. Paden Distinguished Professor, Colorado School of Mines) Bio Abstract
  Probabilistic Back-Analysis of Liquefied Shear Strength from Case Histories
• Misko Cubrinovski (University of Canterbury, New Zealand) Bio Abstract
  Liquefaction Characteristics of Sandy Soils
• Ikuo Towhata (Professor Emeritus, University of Tokyo) Bio Abstract
  Soil improvement project in liquefaction-damaged residential areas
• Ricardo Dobry (Rensselaer Polytechnic Institute) Bio Abstract
  New Findings on Liquefaction Triggering of Sands During Earthquakes
• Jonathan Bray (University of California, Berkeley) Bio Abstract
  Insights Through Dynamic Analysis of Structures at Liquefied Sites
• Ahmed Elgamal (University of California San Diego)
  
• Gopal Madabhushi (University of Cambridge, England) Bio Abstract
  Soil Liquefaction: To Drain or not to Drain?
• Takaji Kokusho (Chuo University, Tokyo, Japan) Bio Abstract
  Lab tests on applicability of S-wave-based and CPT-based liquefaction evaluations
  
• Sjoerd Van Ballegooy (Tonkin+Taylor, New Zealand) Bio Abstract
  Predicting the Consequences of Liquefaction on Residential Buildings
• Michael Fraser (NAVFAC) Bio Abstract
  Uncertainty Related to Liquefaction-Induced Settlements
• Liam Finn (Professor Emeritus, University of British Columbia, Canada) Bio Abstract
  Liquefaction under Probabilistic Ground Motions
• Tara Hutchinson (University of California San Diego) Abstract and Bio
  Inelastic Pile Behavior in Partially Liquefied Soils and Layered Soil Conditions
• Ellen Rathje (University of Texas, Austin) Bio Abstract
  Summary of National Research Council (NRC) study on the State of the Art and Practice in
  Earthquake Induced Soil Liquefaction Assessment

Organizing Committee:

Dr. Jorge Meneses (President, EERI San Diego Chapter), jmenesesl@gmail.com
Sean Ahdi
Tugce Baser
Victor Contreras
Ahmed Ebeido
Mandro Eslami
John Li
Jinchi Lu
Lan Luo
Zhijian Qiu
Wenyong Rong
Muhammad Zayed
Yewei Zheng

PURPOSE:

The workshop will honor the lifetime achievements and contributions of Professor Kenji Ishihara to the field of geotechnical earthquake engineering, with the afternoon session of the second day of the workshop entirely devoted to honor Professor Ishihara and hosted by Professor I.M. Idriss (M. EERI, 1972).

Distinguished speakers from the United States, Japan, New Zealand, Europe, and South America will share experiences with liquefaction mitigation, recent major earthquakes, and highlighting the contributions of Professor Ishihara. A one-day short course before the workshop on Tuesday, March 28, is also offered.

Target audience includes geotechnical engineers, engineering geologists, structural engineers, researchers, agencies officials and students. Panel discussions will promote exchange of ideas and clarification.

This workshop will be the second of a series of periodic workshops on the topic of geotechnical earthquake engineering.

VENUE

University of California San Diego Campus
Price Center East Ballroom
9500 Gilman Dr., La Jolla, CA 92093
For driving directions and parking information:
http://universitycenters.ucsd.edu/aboutus_directions.php

Click here for parking directions (Gilman Parking Structure)

HOTELS NEAR UCSD CAMPUS

Click here for hotels near UCSD.

REGISTRATION

Registration includes registration package and access to pdf files of the presentations. Meals and refreshments will not be provided as the lower level of the Price Center contains a great variety of food and costs.

Click here to register for the Workshop and/or 1-day short course.

Proceeds of the workshop will go the “Update of the San Diego-Tijuana Earthquake Scenario.” A Project led by the EERI San Diego Chapter with the participation of organizations from San Diego, California, and Tijuana-Ensenada, Baja California, Mexico. Further information can be found at https://sandiego.eeri.org/?page_id=265

 

Short Course Series on Geotechnical Earthquake Engineering

 
1-DAY SHORT COURSE

“LIQUEFACTION: FROM SITE CHARACTERIZATION TO USER-FRIENDLY COMPUTER PROGRAMS”

Instructors:

Prof. Ahmed Elgamal (University of California San Diego)

Michael Fraser, PhD, PE (Naval Facilities Engineering Command Southwest)

Jorge Meneses, PhD, PE, GE, D.GE, F.ASCE (RMA Group, San Diego)

Date:                     Tuesday, March 28, 2017

Program:             8:00 am – 5:00 pm

Venue:                
UC San Diego
Structural and Material Engineering (SME) Building (UCSD Structural Engineering) (Google map)
Cymer Conference Room 248
La Jolla, CA 92093

Click here for parking directions (Gilman Parking Structure)

Content:              All lectures will incorporate illustrating case histories and practical applications

• Site characterization and seismic response (Prof. Elgamal)
• Liquefaction (Dr. Fraser)
• Seismic Design Codes (Dr. Meneses)
• Hands-on Implementation and case studies (Prof. Elgamal)

Practical demonstrations using available computer programs such as Cyclic1D, OpenSees-Frequency Domain Analysis, and others. Participants will receive these computer programs and spreadsheets.

Click here to register for 1-day short course and/or the Workshop.

Program:

8:00 – 8:30 am    Registration

8:30 – 10:00 am Site characterization and seismic response

10:00 – 10:15 am Morning break

10:15 – 11:45 am Liquefaction

11:45 – 1:00pm LUNCH BREAK

1:00 – 2:30 pm Seismic Design Codes

2:30 – 2:45 pm Afternoon break

2:45 – 4:15 pm Hands-on Implementation and case studies

4:15 – 5:00 pm Discussion, Q&A

5:00 – 6:30 pm   Get together

 

1/24/2015 Workshop Meeting and Photos

Here are photos from today’s San Diego-Tijuana Earthquake Scenario workshop.  The turn out was amazing and we were able to get support from both public and private stake holders including organizations such as City of San Diego Office of Emergency Services, California Geological Survey, City of Tijuana Civil Protection Office, Naval Facilities Engineering Command (NAVFAC) South West, San Diego Fire-Rescue Department, Medical College of Tijuana, Naval Medical Center San Diego, numerous Universities, and private consultants.

Thank you to everyone again for the support!

For more photos, program and details of the event, visit the page of the January 2015 Workshop.

9/12 Workshop Meeting & Photos

Here are a few photos of the guests and speakers that attended our 9/12 Workshop at the UCSD Campus.  Thank you again for the support!

9/12 Workshop: Liquefaction Evaluation, Mapping, Simulation and Mitigation

1^st WORKSHOP ON GEOTECHNICAL EARTHQUAKE ENGINEERING

LIQUEFACTION EVALUATION, MAPPING, SIMULATION, AND MITIGATION
Organized by the Earthquake Engineering Research Institute (EERI) San Diego Chapter

Friday, September 12
8:30am – 5:00pm

Speakers:

1)      Dr. Gonzalo Castro (GEI Consultants, Inc.) Download Presentation by Castro
2)      Prof. Ahmed Elgamal (UC San Diego) & Prof. Geoffrey Martin (University of Southern California)
Download Presentation by Martin and Elgamal
3)      Prof. Kevin Franke (Brigham Young University) Download Presentation by Franke
4)      Prof. I.M. Idriss (Prof. Emeritus, UC Davis) Download Presentation by Idriss
5)      Dr. Mitsuo Nozu (Fudo Construction) Download Presentation by Nozu
6)      Dr. Peter Robertson (Prof. Emeritus, University of Alberta) Download Presentation by Robertson
7)      Prof. Jonathan Stewart (UC Los Angeles) Download Presentation by Stewart

Chair of Organizing Committee:

Dr. Jorge Meneses (President, EERI San Diego Chapter)

PURPOSE:

Presenters, distinguished leaders of the geotechnical earthquake engineering community, will discuss current procedures to evaluate liquefaction occurrence and consequences, map liquefaction hazards, mitigate liquefaction consequences, and numerically model the phenomenon. Target audience includes geotechnical engineers, engineering geologists, researchers, agencies officials and students. Two panel discussions will promote exchange of ideas and clarification.

 This workshop intends to be the first of a series on annual workshops on the topic of geotechnical earthquake engineering and will be announced nationwide and internationally.

VENUE

 University of California San Diego Campus
Center Hall, Room 115
9500 Gilman Dr., La Jolla, CA 92093
For driving directions and parking information:
http://ucsd.edu/explore/maps/index.html

REGISTRATION

Registration includes pdf files of the presentations, breakfast, and refreshments during morning and afternoon breaks. Lunch will not be provided as the Price Center with a great variety of food and costs is a walkable distance.

Early-Bird Registration (if received by August 31, 2014)

EERI members  $ 150
EERI non-members  $ 170
Students $60

Registration from September 1, 2014

EERI members  $ 170
EERI non-members  $ 190
Students $70

Please RSVP Tan Cao, our Secretary/Treasurer, at tcao@kleinfelder.com by September 10.

Payment Options 

Make checks payable to: 

EERI San Diego
c/o Tan Cao
Kleinfelder Simon Wong Engineer
550 West C Street, Suite 1200
San Diego, CA 92101
USA

Contact Tan Cao for online credit card registration. 

Payment by Cash, Check, or Credit Card will also be accepted at the door but should RSVP to tcao@kleinfelder.com by September 10.

Co-Sponsor: 

ABSTRACTS AND BIOS OF PRESENTERS

Presentation Title: Simplified Performance-Based Liquefaction Triggering Assessment in San Diego

Abstract:  Research has shown that the manner in which seismic loading is represented in a simplified empirical liquefaction triggering assessment significantly influences the predicted liquefaction hazard. Because probabilistic methods of ground motion prediction typically offer multiple possible seismic loading scenarios, it can be difficult for engineers to select which scenario is appropriate for use in liquefaction analysis. Recently-developed performance-based liquefaction triggering methods overcome this challenge by considering all possible seismic loading scenarios across a wide range of return periods. However, performance-based analysis methods are quite involved and difficult for engineers to implement without specialized tools. Fortunately, researchers have developed simplified map-based methods to closely approximate performance-based liquefaction triggering results at a targeted return period. This presentation will introduce such a method that has recently been created for the Boulanger and Idriss (2012, 2014) probabilistic triggering model. The potential application of the method for liquefaction assessment in San Diego will be explored. Benefits and limitations of simplified performance-based methods will be briefly discussed.

Bio:  Kevin W. Franke, Ph.D., P.E. is an Assistant Professor in the Department of Civil and Environmental Engineering at Brigham Young University. Kevin’s principal research focus relates to geotechnical/earthquake engineering. Kevin and his students are currently developing performance-based (i.e., probabilistic) methods for dealing with soil liquefaction and its associated hazards. Additionally, Kevin is an investigator in the Center for Unmanned Aircraft Systems (C-UAS), which is currently the only NSF-sponsored research center for unmanned aerial vehicles (UAVs or “drones.”) Kevin’s research focus in the Center deals with new and improved applications of small unmanned aerial vehicles (sUAVs) in monitoring infrastructure and performing post-disaster reconnaissance.

Prior to his current position at BYU, Kevin worked for 6 years as a professional civil engineering consultant for Kleinfelder, Inc. and URS Corporation. Kevin contributed to multiple significant projects throughout the western and central US including Kennecott Utah Copper tailings impoundment, facilities at Los Alamos National Labs, California High Speed Rail, North Torrey Pines Bridge seismic retrofit, I-15 Corridor Reconstruction in Utah County, Sacramento Area Flood Control Authority Levee Evaluations/Improvements, Levee improvements in New Orleans, Roscoe Wind Farm, Legacy Parkway, and multiple schools and hospitals throughout CA, OR, and WA.

Kevin received his BSCE from Utah State University in 2004, is MSCE from University of Washington in 2005, and his Ph.D. from Brigham Young University in 2011. He and his wife of 13 years, Ruby, have 6 young children.

Presentation Title: Liquefaction Mitigation Effects and Its Advanced Technology in Japan

Abstract: In this presentation, at first the liquefaction mitigation effects for Sand Compaction Pile and other techniques against past huge earthquakes in Japan will be introduced. In particular, the impressive effects in Urayasu-City for 2011 Tohoku earthquake are explained in detail. In addition, it is depicted some derivative effects such as initial stress change and unsaturated condition due to sand compaction pile installation. Finally, one advanced technology named ‘SAVE-SP’ method, in which the liquid sand flow is sent through the grout pump into the ground to compact it with the static expansion effect.

Bio: Major: Design, construction and quality control of Ground improvement works such as Deep Soil Mixing, Dynamic Compaction, Vertical drain, Sand compaction pile, and Jet grouting / Countermeasures against Liquefaction / Numerical analysis for deformation using Elasto-Plastic constitutive model (Cam-clay model), Seismic analysis incl. Liquefaction and Seepage analysis / Vibration Isolation works of Trains & Road with special gas-filled wall. Qualifications: Registered Consulting Engineer from Japanese government, 1990; Dr. Eng. from Nagoya University, 1995; APEC Engineer, 2001

Work Experience: 1984-2014: FUDO CONSTRUCTION Co., Ltd.; 1985-1988: Civil Engineer, Yanbu Medical Center foundation construction site, Saudi Arabia; 1996-1999 JICA project team member for ground improvement of Highway in Thailand; 2002-2014 Part-time lecturer of Nagoya University; 2005 Regional Reporter in Asia, Deep Mixing 2005, International conference in Stockholm, Sweden; 2005 Session secretary in ISSMFE Osaka conference; 2006-2014 International Department of Fudo Tetra Corporation; 2005 QC & Design Engineer of Test trial for Off-shore SCP in South Korea; 2006 QC & Design manager of Omon Thermal Power Plant, Vietnam; 2007-2008 QC & Design manager of SP-PSA Container Terminal, Vietnam; 2007-2012 General manager of International Department; 2008-2009 QC & Design manager of New Orleans Levee Improvement Project, U.S.; 2009-2010 QC & Design manager of Thi-Vai Container Terminal, Vietnam; 2012-2014 QC manager of Fort Lauderdale Airport Expansion Project, Florida, U.S. Education: 1978-1982: Nagoya University, Major: Geotechnical Engineering (Prof. A. Asaoka); 1982-1984: Graduate school (ditto).

Presentation Title: Next Generation Liquefaction Project – Objectives and Preliminary Site Characterization Results

Abstract: This presentation will describe the objectives and scope of the Next Generation Liquefaction (NGL) project being organized through the Pacific Earthquake Engineering Research Center. The project is working towards development of an international community database of ground failure case histories, including cases of liquefaction triggering, non-ground failure cases, and case histories of measured ground deformations. Ultimately we envision multiple modeling teams working with the common data set, and benefitting from a number of supporting studies, to develop next-generation models for liquefaction triggering, post-liquefaction residual strength, and deformation effects.

Bio: Jonathan P. Stewart is Professor and Chair of the Civil & Environmental Engineering at UCLA. He joined UCLA as an Assistant Professor in 1997, advancing to tenure in 2003 and full Professor in 2007. He has served previously as the CEE Vice Chair for Undergraduate Studies (2005-2007) and as the CEE Graduate Advisor (2007-2012).

Professor Stewart’s technical expertise is in geotechnical earthquake engineering and engineering seismology, with emphases on seismic soil-structure interaction, engineering characterization of earthquake ground motions, seismic performance of levees and other embankments, and seismic ground failure. His research involves: interpretation and analysis of earthquake strong motion records to gain insight into soil-structure interaction effects, site effects, regional variations of ground motions, and other effects; cyclic field testing and analysis of full-scale foundation components including mat foundations, drilled shafts, and bridge abutment walls; advanced dynamic laboratory testing and development of material models for engineering application; and detailed case studies of seismic ground failure at sites in California, Taiwan, Turkey, Japan, Chile, Greece, Italy, and India. Results of work by his research group are widely utilized in engineering practice, including the NEHRP Provisions, ASCE-7, and ASCE-41. He is co PI of the nees@UCLA field testing site and has led major multi-investigator research efforts related to ground motion characterization (NGA and GEM projects, via PEER center) nonlinear site response analysis (with PEER center), soil-structure interaction (with Applied Technology Council), and seismic ground failure (NGL project, via PEER center).

He is a former Chief Editor for the ASCE Journal of Geotechnical and Geoenvironmental Engineering and is the current Editor of Earthquake Spectra. His research team has produced 20 Ph.D. graduates since 2001 and over 70 journal articles since 1995. He has been recognized for his research contributions by ASCE (Casagrande Award, Huber Award, election to Fellow grade), EERI (Outstanding Paper Award), NSF (Career Award), and the U.S. State Department (Fulbright Fellowship). He has received numerous teaching awards from UCLA (including the Distinguished Teaching Award in 2012), where he teaches courses in Soil Mechanics, Foundation Engineering, and Earthquake Engineering.  He has also taught advanced graduate courses at the Rose School in Pavia Italy and at the University of Rome.

Presentation Title: Steel Creek Dam Revisited

Abstract: The foundation for a new dam had a layer of a very loose clayey sand with percentage of fines below 10% and a clay fraction with high plasticity. This rather unusual soil presented special challenges in evaluating its strength under earthquake loading and determining the target parameters for in situ densification. The clay fraction had a substantial impact in the engineering behavior of the soil and in the effectiveness of in situ compaction.

Bio: He is a geotechnical engineer with over 45 years of experience in the practice of geotechnical engineering. Dr. Castro’s professional experience has been primarily as the engineer in charge of the geotechnical aspects of major civil engineering projects as a principal of GEI Consultants. His contributions to the practice of geotechnical engineering have been principally in the understanding of the behavior of soils during earthquakes and its application to the seismic safety of dams. Elected to the National Academy of Engineering for contributions to geotechnical earthquake engineering, soil dynamics and the seismic safety of dams, Dr. Castro is also a Fellow of the American Society of Civil Engineers (ASCE), and Honorary Member of the Boston Society of Civil Engineers. He received his doctorate in Soil Mechanics at Harvard University and specializes in the behavior of soils during earthquakes.

Presentation Title: Evaluating Soil Liquefaction Using the CPT – Practical Considerations

Abstract: Evaluating the potential for soil liquefaction and the resulting consequences is often a major design issue for many geotechnical projects in seismic areas. This presentation will provide some brief background on the available methods and present examples to illustrate some key points. Practical issues that influence the results will be discussed and presented.

Bio: Dr. Peter Robertson has more than 40 years’ experience as an educator, researcher, consultant and practitioner specializing in the areas of in-situ testing and site investigation, earthquake design of geotechnical structures, and soil liquefaction. Peter is recognized as an expert both nationally and internationally in the areas of in-situ testing and soil liquefaction. He has been a consultant to various clients in many countries for projects involving liquefaction evaluation for major structures, stability of on-shore and off-shore structures, landslides, stability of natural slopes and tailings dams, and use and interpretation of in-situ tests. He is a co-author of the primary reference book on Cone Penetration Testing (CPT). He has also authored or coauthored over 250 publications as well a popular CPT Guide that is freely available via several websites. With support from Gregg Drilling & Testing Inc., Peter has also assisted in the development of several inexpensive CPT-based interpretation software programs (CPeT-IT and CLiq) and has presented a series of free webinars on the CPT in an effort to enhance education and practice. Peter continues to provide private consulting to a wide range of clients world-wide.

Presentation Title: Seismic Response of Stratified Sites and Implications for Foundation Systems

Abstract: Dominated by shear excitation, lateral seismic site response is dictated by the pertinent characteristics of the involved near-surface soil strata. Assessment of stratified ground seismic response by nonlinear computational codes has been underway with continued enhancement over the years (e.g., the DESRA-MUSC program with its high fidelity pore-pressure generation model, and the CYCLIC/OpenSees model). Inclusion of such procedures within a multi-dimensional fully-coupled effective stress analysis tool allows for a more realistic assessment of ground deformations and the resulting displacement demands imposed on foundation systems. To Illustrate the significance of employing such advanced techniques, relevant scenarios will be presented and discussed.

Prof. Geoffrey Martin Bio: Dr. Geoffrey Martin has more than 40 years of experience in civil and geotechnical engineering. He is nationally and internationally recognized for his expertise in the field of geotechnical earthquake engineering, particularly as related to the stability of earth structures, liquefaction, ground improvement, and the seismic design of foundations. He has authored or co-authored over 100 papers on these topics, and received the 2012 ASCE H. Bolton Seed Medal for his contributions to geotechnical earthquake engineering.

Dr. Martin received his M.S. in Civil Engineering from the University of Auckland, New Zealand in 1962 and his Ph.D. in Geotechnical Engineering from the University of California, Berkeley, in 1965. Following a 12-year career as a Professor of Civil Engineering at the University of Auckland, New Zealand, he joined the Earth Technology Corporation, Long Beach in 1977, as manager of Earthquake Engineering. Subsequently, as Vice President for Engineering, he was responsible for the technical direction of major geotechnical projects, particularly those related to earth dams, port facilities, offshore structures and bridges. He also directed the company’s research activities in earthquake engineering.

In 1990 he returned to academia as a Professor in the Department of Civil Engineering at the University of Southern California (USC) where he focused his research interests on liquefaction related ground stability and the seismic design of foundations and retaining structures. He has a strong interest in technology transfer and has contributed to several seismic design guidelines or codes of practice. He is a contributing author to the “FEMA 273/274 Guidelines for the Seismic Rehabilitation of Buildings (1997),” the “Recommended LRFD Guidelines for the Seismic Design of Highway Bridges” (2001), the FHWA Seismic Retrofitting Manual for Highway Structures, Part 1-Bridges (2006), NCHRP Report 611 on the Seismic Analysis and Design of Retaining Walls. Buried Structures, Slopes and Embankments (2008), and the Port of Los Angeles Seismic Code for Container Wharves (2010).

He is currently Professor Emeritus with the USC Department of Civil Engineering, having retired from academia in 2009. He remains active as a independent consultant and serves as a Tunnel Advisory Panel Member for the Los Angeles Metropolitan Transportation Authority and is a member of the Seismic Advisory Board for the California Department of Transportation.

Prof. Ahmed Elgamal Bio: Ahmed Elgamal Chaired the UC San Diego Department of Structural Engineering from 2003 to 2007. In 1984, he received his Ph.D. from Princeton University. He joined UCSD in 1997 as Professor after a Post-doctoral appointment at the California Institute of Technology, and Faculty positions at Rensselaer Polytechnic Institute and Columbia University. His areas of research interest include large-scale Geomechanics soil-structure experimental and computational simulation (http://soilquake.net , http://cyclic.ucsd.edu , http://cyclic.ucsd.edu/openseespl , http://peer.berkeley.edu/bridgepbee ), Sustainability in Geomechanics, and IT system-identification and data mining applications. He served earlier as PI of the US NEES IT project and as Thrust Area Leader of the UC Berkeley PEER Center. He is author and co-author of over 250 Technical Publications, and currently serves as Editor-in-Chief of the Journal Soil Dynamics and Earthquake Engineering. Over the years, he has consulted and provided professional services in the general areas of Geomechanics and Geotechnical Engineering for a number of national and international organizations.

UPDATE OF THE SPT- AND CPT-BASED LIQUEFACTION
TRIGGERING PROCEDURES

by
I. M. Idriss, Professor Emeritus, University of California at Univ. of California at Davis
Consulting Geotechnical Engineer, Santa Fe, NM
e-mail: imidriss@aol.com

 ABSTRACT

 Boulanger and Idriss (2014)^[1] recently examined the available CPT-based case histories of liquefaction/ no liquefaction and augmented the SPT-based case histories with 26 cases from Taiwan (1999 Chi-Chi earthquake) and from Turkey.(1999 Kocaeli earthquake).  The main findings are as follows:

1. The magnitude scaling factors (MSF), which had been found to be different for sands from those for clays, were also found to depend on the denseness of the sand.  Accordingly, a new MSF relationships in terms of magnitude, M_w, (N₁)_60cs or in terms of M_w and q_c1Ncs are developed.

2. The modifications of the MSF relationships and the addition of the 26 case histories from Taiwan and Turkey did not affect the SPT- based procedure and the equations published in the 2008 EERI Monograph are still applicable.  For forward applications, the new MSF relationships are recommended.

3. A new expression for the fines content (FC) adjustment in the CPT-based procedure was derived.

4. The expression relating CRR to q_c1Ncs was modified at low and at high tip penetration resistance as shown in the figure below,

These findings and the resulting updates will be summarized at this Workshop.

 I. M. Idriss

 Professional History: Professor Emeritus of Civil Engineering at the University of California at Davis (UCD) and independent consulting geotechnical engineer, currently residing in Santa Fe, New Mexico, USA.  His areas of teaching, research and practice are: geotechnical earthquake engineering; soil mechanics and foundation engineering; earthfill and rockfill dam engineering; and numerical modeling.  He joined the faculty at UCD in 1989 following 20 years at Woodward-Clyde Consultants in San Francisco, Santa Ana and Oakland where he was a senior Principal.  He was a member of the teaching and research staff of the geotechnical engineering group at the University of California at Berkeley from 1967 through 1975.  He retired from the faculty position at UCD in July 2004.

Education & Registration: BCE, Rensselaer Polytechnic Institute in 1958; MS, Caltech in 1959; PhD, University of California at Berkeley in 1966.  He is a registered Professional Engineer (PE) and Geotechnical Engineer (GE) in California.

Research & Consulting: He has conducted comprehensive post earthquake investigations of some ten earthquakes since the 1964 Great Alaska earthquake.  He has developed or co-developed many of the currently used procedures for evaluating the behavior of soil sites and soil structures during earthquakes.  He has been a consultant on many projects in the USA and other countries and serves on several consulting or review boards for US and International companies and for State and US Federal Agencies.

He has authored or co-authored about 200 technical papers and research reports on subjects related to the geotechnical aspects of earthquake engineering.

Awards & Honors: He has received many awards and honors over the past forty years, including election to the US National Academy of Engineering in 1989, receipt of the first H. Bolton Seed Medal from ASCE in 1995, the distinguished scholarly public service award from the University of California at Davis in 1999, was elected an honorary member of the Japanese Geotechnical Society in 2005, was elected a Distinguished Member of ASCE in 2008, and is the recipient of the 2010 Ralph Peck Award from ASCE, and the 2010 Casagrande Memorial Lecture from the Boston Society of Civil Engineers.  He was elected an Honorary Member of the Earthquake Engineering Research Institute (EERI) in 2012.

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February Joint Luncheon with ASCE – Resilience: An Engineering Challenge

 

Risk modeling has focused on the “3Ds: Deaths, Dollars and Downtime” as metrics for estimating building and infrastructure performance as well as for decision-making in design and in policy development. What can these metrics tell us about performance and resilience in recent disasters? What other measures of performance are suggested by the recovery experience in both developed and developing countries? What are the engineering challenges and research opportunities coming out of recent earthquakes in China, Haiti, Chile, New Zealand and Japan, and how are they applicable to the U.S. context? Are there better engineering metrics for resilience?

Engineering performance metrics typically are designed for individual components (e.g. for a building or bridge), not for a city. Resilience requires metrics that look at the performance of community components such as housing, education, civic and cultural infrastructure. Evaluating recovery experience in recent earthquakes, it is clear that funding, political will, creative planning, and good technical implementation drive the speed and quality of recovery.

To improve resilience, our professions need to participate in land use and policy planning; and we need to re-think performance measures and building codes in order to develop methods of setting performance guidelines for cities. Improving overall performance and resilience in developed countries with good codes and land use practices, as well as in developing countries, are challenges for the 21^st Century.

Mary C. Comerio, Professor in the Graduate School (Architecture), University of California, Berkeley

Mary Comerio is an internationally recognized expert on disaster recovery. She joined the faculty in the Department of Architecture at U. C. Berkeley in 1978 and served as Chair of the Department from 2006-2009.  As an architect, she has designed numerous public and private facilities including market rate and affordable housing.  Her research focuses on the costs and benefits of seismic rehabilitation (particularly housing), post-disaster recovery and reconstruction, and loss modeling.  She is the author of Disaster Hits Home: New Policy for Urban Housing Recovery. In 2011, she received the Green Star Award from the United Nations for her work in post-disaster reconstruction in China and Haiti. In 2013, she received the U. C. Berkeley Chancellor’s Award for Public Service for Research in the Public Interest, and the EERI Distinguished Lecturer Award.

Comerio led the FEMA sponsored Disaster Resistant University Program. Her research together with the UC Berkeley campus seismic rehabilitation program was recognized by Engineering News Record as one of the ten best seismic planning projects in the United States in 2006, and by the EERI Northern California Chapter in 2012. Comerio also led the Building Systems Research in the Pacific Earthquake Engineering Research Center, during the ten years when PEER was one of three NSF funded national earthquake centers. Comerio is currently completing work on a NSF Grand Challenge project focused on the mitigation of collapse risk in nonductile concrete buildings. She recently led the PEER/EERI reconnaissance teams to both earthquakes in New Zealand and conducted a review of the housing recovery in Chile for the Ministry of Housing and Urban Development and the United Nations Development Program.

TIME: Registration: 11:30 am / Lunch: 12:00 pm / Program: 12:30-1:15 pm

PRICE:  ASCE Section Members: $25.00 / Non-Members:$40.00 / Students:$15.00 / Public Agencies: $15.00

PAYMENT: Cash, check or credit card (www.asce-sd.org to pay in advance by credit card by2/20, (a $3 fee will be added for credit card processing).  Parking will be validated. Checks made payable to ASCE.  You may mail your check in advance to PO Box 1028, El Cajon, CA  92022.

MENU: Chicken Florentine – Chicken with Spinach, Pinenuts, and Goat Cheese served with Orange Basil Rice and Market Vegetables, house salad, dessert, tea and coffee service. (vegetarian plate is available but must be requested by February 20th)

PLACE: The Handlery Hotel & Resort, 950 Hotel Circle N., San Diego, 92108

RESERVATIONS: MUST be received by Thursday, February 20th, Noon.   If you choose to walk-in the day of the luncheon, please be advised that your meal is not guaranteed and an additional charge of $10 will be added to the cost of the lunch.  If you make a lunch reservation and fail to attend you will be invoiced.  By Phone: 619-588-0641 E-Mail:ascesd@sdcoxmail.com, or by responding to the Constant Contact email invitation.

CANCELLATION: Please CANCEL your reservation(s) at least 24 hours in advance if you are UNABLE to attend.

Register Here

Come and join us for an enjoyable and intellectual Dinner Meeting

Hello All,

Earthquake Engineering Research Institute (EERI) of San Diego will be hosting a dinner meeting on September 25, 2013. Come and join us for a fun filled evening of intellectual discussions, an enjoyable dinner in Harbor Island, and an informative presentation by Dr. Annie Kammerer.

Register by September 23rd online at https://docs.google.com/forms/d/1k86CHQjf-D9nbnrIo5VgjDG-TOmCcrYfN-cEYCtGSsM/viewform

Hope to see you there!

 

 

Regional Chapter Issue 3

Englekirk Center Shake Table Visit and Tour

In one of our previous meetings, EERI had the opportunity to invite our guests to the Englekirk Structural Engineering Center at the University of California, San Diego to view and tour the facility.  Here are just a few photos of the guests.  Thank you again for the support!

Wednesday, September 25, 2013 Dinner Registration

Dear EERI San Diego members and friends,

Hope you had a great and safe summer!

With the Fukushima disaster in Japan and the recent decision to shut down the San Onofre Nuclear Power Plant, there is strong interest in the community to better understand the seismic issues and risks of nuclear power plants. Motivated by these events and by our mission of raising awareness of earthquake risks, the EERI San Diego Chapter, working jointly with the ASCE Geo-Institute San Diego and the San Diego Association of Geologists, invite you to participate in a dinner meeting on Wednesday, September 25, 2013, 6pm at the Tom Ham’s Lighthouse Restaurant.

 We are delighted to have Dr. Annie Kammerer, an earthquake engineer in the Office of Research of the US Nuclear Regulatory Commission, present on this topic. The abstract of her talk and her biographical information are provided below.

 

SEISMIC DESIGN AND RISK EVALUATION OF NUCLEAR PLANTS

Since the beginning of the nuclear power industry, the framework and methods used in the seismic design and risk evaluation of the fleet of nuclear power plants in the US has gone through significant change and advancement. Currently the US regulatory framework uses a risk-informed, performance-based framework that has matured over the last 5 decades and is composed of three steps: probabilistic seismic hazard analysis, seismic design, seismic probabilistic risk assessment.

This presentation will cover a wide variety of topics including:

• Basic nuclear plant design concepts (how they work and what can go wrong)
• Why the engineering of nuclear plants is unique and challenging
• The history of seismic regulations, design approaches, and reevaluation efforts
• The performance-based and risk-informed methods used in the industry today
• The impact of the Fukushima Daiichi accident, including current and future NRC efforts

Biography:

Dr. Annie Kammerer is a senior seismologist and earthquake engineer in the Office of Research of the US Nuclear Regulatory Commission, where she is the coordinator and manager of the seismic and tsunami research program.  Her research is principally in the areas of seismic and tsunami hazard and risk assessments, seismic isolation, and technology-neutral approaches to seismic design. Currently she is also the NRC’s technical lead for a special program conducting Seismic Walkdowns of all 104 operating US nuclear plants in response to the Fukushima Daiichi accident.  She is active internationally and chairs an IAEA Working Group on Seismic Re-evaluation of Operating Reactors, as well as special committee developing new guidance on seismic isolation. Prior to joining the NRC in 2006, she was a consultant in the Risk and Advanced Technology groups in the international design firm, Arup.  As seismic hazard lead for the Americas, her consulting work encompassed a wide variety of technical areas including geotechnical earthquake engineering, structural dynamics, seismology and risk assessment.  Her work focused principally in the energy, industrial and transportation sectors and included dozens of projects around the world.  She holds three degrees from UC Berkeley, including a Ph.D. in geotechnical engineering with minors in strong motion seismology and structural engineering.

Date:     Wednesday, September 25, 2013

Time:     5:30-6:30 pm Networking

6:30-7:30 pm Dinner

7:30-8:45 pm Presentation and Q&A

Venue: Tom Ham’s Lighthouse Restaurant

2150 Harbor Island Drive

San Diego, CA 92101

Registration:

EERI members: $35

EERI non-members: $45

Students: $15

 

RSVP:

Please reserve a spot by September 20, 2013 at the following website:

https://docs.google.com/a/eng.ucsd.edu/forms/d/1k86CHQjf-D9nbnrIo5VgjDG-TOmCcrYfN-cEYCtGSsM/viewform

You may pay with cash, check, or credit card ($2 service fee) at the door.

For any questions or to cancel your reservation, please contact:

Tan Cao, EERI San Diego Chapter Secretary/Treasurer, tca@deainc.com

 

Looking forward to seeing all of you

 

January 16, 2013 Dinner Meeting

A special thanks to our guest speakers Christie Hale and Megan Williams from the NRC, our sponsors Tobolski Watkins and Fugro, the students from UCSD and SDSU, our collaborators and all the attendees who made this dinner meeting a success.  See you at the next meeting!

Presentation Download:
2013-01-03 NRC Regulations for Seismic Analysis and Design Applied to San Onofre Nuclear Generating Station
 

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