U.S.—New Zealand—Japan International Workshop Liquefaction-Induced Ground Movements Effects



U.S.—New Zealand—Japan International Workshop
Liquefaction-Induced Ground Movements Effects
November 2-4, 2016,
Faculty Club, UC Berkeley, California

Liquefaction Workshop 2016 participants

2016 Liquefaction Workshop Attendees

Wednesday, November 2, 2016

6:00 pm Welcome Reception (Seaborg Room & Patio)
7:00 pm Dinner (Seaborg Room)

Thursday, November 3, 2016

8:00 am Breakfast (Heyns Room & Patio)
9:00 am WelcomeIntroduction & Workshop Objectives – J. Bray (Heyns Room)
9:15 am Session I: Liquefaction-induced flow slides that are governed by the residual shear strength of liquefied soil; Chair: S. Kramer, Recorder: R. Boulanger (Heyns Room)
Invited presentations (15-minute talks):
S. Kramer “Residual Strength of Liquefied Soil” (PDF)
R. Orense “Post-Liquefaction Behaviour of Sands” (PDF)
Y. Tsukamoto “Ageing of Soils Affecting Liquefaction Triggering and Undrained Shear Strength of Soils” (PDF)
R. Boulanger “Liquefaction-Induced Flow Slides Governed by Residual Shear Strength of Liquefied Soil (PDF)
10:15 am Additional presentation (5-minute talks): “Liquefied Shear Strength & Flow Slides – Challenges and Paths Forward” (PDF)
Presenters: S. OlsonG. Chiaro, A. Athanasopoulos-Zekkos, A. Takahashi, B. Kutter, L. Harder
10:45 am Break
11:15 am Discussions of identified key challenges/issues
12:45 pm Lunch (Heyns Room & Patio)
2:00 pm Session II: Liquefaction-induced lateral spreading and its effects
on structuresand lifelines
Chair: E. Rathje, Recorder: M. Cubrinovski (Heyns Room)
Invited presentations (15-minute talks):
E. Rathje “Lateral Spreading Displacements Challenges: Data and Predictive Models” (PDF)
T. Kokusho “Howto Unify Evaluationson LiquefactionInduced Flow/Lateral SpreadingUnderInitialShearStress” (PDF)
M. Cubrinovski “Liquefaction-Induced Lateral Spreading” (PDF)
T. O’Rourke “Liquefaction-Induced Lateral Spreading & Its Effects on Structures and Lifelines”(PDF)
3:00 pm Additional presentation (5-minute talks): “Improvements in Field Seismic and Laboratory Measurements Used to Identify and Characterize Liquefiable Soils and Predict Consequences”(PDF)
Presenters: K. Stokoe, M. Okamura, K. Franke, L. Wotherspoon, T. Travasarou, & N. Sitar
3:30 pm Break
4:00 pm Discussions of identified key challenges/issues
5:30 pm Summarize first day activities
5:45 pm Break
6:00 pm Dinner (Seaborg Room)

Friday, November 4, 2016

8:00 am Breakfast (Heyns Room & Patio)
9:00 am Session III: Liquefaction-induced ground settlement and its effects
on structures and lifelines
; Chair: R. Green, Recorder: J. Bray (Heyns Room)
Invited presentations (15-minute talks):
R. Green “Use of Volumetric Strain in Liquefaction Damage Index Framework” (PDF)
S. van Ballegooy “Prediction of Liquefaction-Induced Differential Ground Surface Settlement” (PDF)
K. Tokimatsu “Liquefaction-Induced Settlements of Buildings with Shallow Foundations” (PDF)
J. Bray “Challenge III Liquefaction-Induced Building Settlement” (PDF)
10:00 am Additional presentation (5-minute talks): “Improve Data Quality and Quantity: Include Geologic/Geomorphologic Information and Develop “Complete” Datasets” (PDF)
Presenters: L. Gaskins-Baise , M. Jacka, S. Dashti, S. Tamura, B. Cox, & K. Rollins
10:30 am Break
11:00 am Discussions of identified key challenges/issues
12:30 pm Lunch (Heyns Room & Patio)
1:45 pm Session IV: Paths forward toward assessing the effects of liquefaction on structures and lifelines; Chair: T. O’Rourke, Recorder: K. Tokimatsu (Heyns Room)Invited presentations (15-minute talks):
P. Robertson “Assessing effects of Liquefaction” (PDF)
S. Iai “Paths Forward for Assessing the Effects of Liquefaction” (PDF)
B. Bradley Increased Physics, Model Validation, and Explicit Uncertainties” (PDF)
I.M. Idriss  A Few Observations / Comments Recommendations” (PDF)
2:45 pm Additional presentation (5-minute talks): “Optimizing Site Characterization to Evaluate and Incorporate Spatial Geologic Structure in 2-D/3-D Analysis” (PDF)
Presenters: J. DeJong , K. Ziotopoulou, T. Kiyota, J. Haskell, D. Y. Kwak, & D. Frost
3:15 pm Break
3:45 pm Discussions of identified key challenges/issues
5:15 pm Summarize last day activities
5:30 pm Adjourn

Saturday, November 5, 2016

9:00 am Workshop Report Preparation: Organizers & Selected Participants (542 Davis Hall)