Fall 2022 Static and Dynamic Liquefaction Assessment of Dams

Registration Closed

Static liquefaction has been in the spotlight of different technical communities as it has been associated with numerous recent failures of tailings storage facilities (e.g., the 2019 failure of Dam I at the Corrego de Feijao mine in Brumadinho, Brazil) and water reservoir dams (e.g., the 2020 failure of Edenville dam in Michigan). Similarly, earthquake-induced liquefaction has caused major damage to earth dams and other infrastructure (e.g., slope deformation of Lower San Fernando dam during the 1971 San Fernando earthquake, failure of the Tapo Canyon dailings dam during the 1994 Northridge earthquake, and flow slide of the Las Palmas tailings dam during the 2011 Maule earthquake).

This 1-day workshop will discuss core concepts of static and cyclic liquefaction relying on the critical state soil mechanics framework and outline how static and cyclic liquefaction assessments are incorporated in the design of dam systems. Towards this end, hands-on exercises and practical examples will be used to illustrate state-of-the-art techniques to assess static and dynamic liquefaction.

Workshop objectives

Outline the state-of-the-art in the assessment of static and dynamic liquefaction.

Introduce practical tools for assessing static and dynamic liquefaction.

Introduce emerging directions to advance the assessment of static and dynamic liquefaction.

Specific benefits participants will take away:

The state-of-practice and state-of-the-art techniques to assess static and dynamic liquefaction

How to estimate properties for static liquefaction assessment using hands-on exercises.

How to use the CPT-based information to assess liquefaction triggering and consequences.

Numerical-based techniques to assess static and dynamic liquefaction, including a hands-on exercise.

8 PDHs

Travel Information:

https://www.ussdams.org/confer...

Jorge Macedo, Ph.D., P.E.

Georgia Institute of Technology, chair of the TAILENG center

Jorge Macedo is an Associate Professor and Frederick L. Olmsted Early-Career Professor at the Georgia Institute of Technology. His research focuses on mining geotechnics, extreme events, earthquakes, and AI-driven, physics-informed performance assessment. He also serves as an industry subject-matter expert and as a technical-review-board member for major mining projects.

Dr. Jonathan Bray, Ph.D., P.E., NAE

University of California, Berkeley

Jonathan D. Bray is the Faculty Chair in Earthquake Engineering Excellence and a Distinguished Professor of Civil and Environmental Engineering at the University of California, Berkeley. His work focuses on geotechnical earthquake engineering, including earth structures, liquefaction, ground failure, fault rupture, and post-event reconnaissance. He is a member of the National Academy of Engineering and has authored more than 450 research publications.

Scott M. Olson Ph.D., P.E.

Professor

University of Illinois

Scott M. Olson, PhD, PE is an Associate Head, Professor, Director of Graduate Studies, and Faculty Excellence Scholar in the CEE Department at the University of Illinois, where he joined the faculty in 2004. Prior to joining Illinois, Scott worked in practice for Woodward-Clyde Consultants and URS Corporation. Prof. Olson has researched static and seismic liquefaction for 30+ years, and has been involved in dozens of research projects, consulting activities, and review boards involving liquefaction evaluation; geotechnical earthquake engineering; tailings dam engineering; in situ, laboratory, and centrifuge testing, soil-foundation-structure interaction; and paleoliquefaction and geohazards analysis. From these activities, Scott has published over 180 journal papers, conference articles, and reports, and has received numerous awards. Prof. Olson serves in various capacities for USSD and the ASCE Geo-Institute, and he is a Founding and Steering Committee member of TAILENG and serves on the advisory board for GEER.

Zhao Cheng

Itasca Consulting Group, Inc.

Dr. Zhao Cheng is ageomechanics engineer with academic background in numerical modeling andgeotechnical engineering and is a licensed Professional Engineer in California.He has research experience in the coupling of porous media and fluids, soildynamics, and soil/rock mechanics. Dr. Zhao Cheng has particular experience innumerical modeling and software development for geotechnics and geomechanics.He currently is the Software Product Manager for FLAC3D, and responsible forthe development and maintenance of constitutive models for all Itasca software.