12th National Conference on Earthquake Engineering

Earthquake Engineering Research Institute
June 27-July 1, 2022
Salt Lake City, Utah

The Earthquake Engineering Research Institute (EERI) will host their 12th National Conference on Earthquake Engineering (12NCEE) in Salt Lake City June 27-July 1, 2022. This year’s conference, centered on the theme “Reimagining Risk and Resilience,” showcases the latest knowledge and techniques to better understand and mitigate the damaging effects of earthquakes and tsunamis. Discussions will highlight new research, advancements in practice and new and ongoing issues related to seismic hazard, risk, mitigation, and public policy.

Kristen Hess, Ph.D., Exponent associate, will moderate the technical session High-Performance Engineering Materials on Tuesday, June 28, at 10 a.m.

Maha Kenawy, Ph.D., Exponent associate, will moderate the technical session Collapse and Vulnerability Assessment of Building Structures on Tuesday, June 28, at 3:30 p.m., as well as the technical session Advances in Performance Based Seismic Design on Wednesday, June 29, at 10 a.m. In addition, Dr. Kenawy will present “Seismic Risk to Buildings in the San Francisco Bay Area Predicted by Broadband Physics-based M7.0 Hayward Fault Rupture Simulations” on Wednesday, June 29, during the technical session Ground Motion Simulation, Validation, and Utilization starting at 3:30 p.m. Her paper describes the use of three-dimensional earthquake simulations and nonlinear structural models to examine the demands imposed on building structures across a regional domain representing the San Francisco Bay Area due to a M7.0 Hayward Fault rupture and the impacts of radiation patterns and modeled wave speeds on these demands.

During the poster sessions on Tuesday, June 28, and Wednesday, June 29, at 5 p.m., Tal Feinstein, Ph.D., Exponent associate, will present “Nonstructural Component Attachments to Concrete with Post-Installed Expansion Anchors.” Her paper will focus on an experimental test program of attachments connected to concrete with post-installed expansion anchors. On Thursday, June 30, Dr. Feinstein will present “Girls in Engineering Outreach at University of California, Berkeley” during the session Leveraging the Virtual Classroom: Inspiring the Next Generation of Earthquake Engineers starting at 1:30 p.m. Girls in Engineering is a program designed to promote leadership skills and inspire confidence in its participants to pursue STEM fields. Local students and engineers come together virtually to create a week-long engineering camp where young minds explore what it means to be an engineer in a fun, hands-on environment.

Also on Thursday, June 30, during the 10 a.m. technical session Seismic Retrofit of Existing Structures, Ezra Jampole, Ph.D., P.E., Exponent managing engineer, will present “Distinguishing Between Earthquake-Induced and Pre-Existing Conditions in Older Buildings Following Earthquakes,” which focuses on a case study from the 2016 M5.0 Cushing, Oklahoma Earthquake. In the afternoon, he will discuss “Defense of Physics-Based Models in Earthquake Engineering” during the special session on Machine Learning Applications in Earthquake Engineering: Hope, Hype or Hindrance (A Debate) beginning at 3:30 p.m. While machine learning is being used with increasing frequency in earthquake engineering, spanning from hazard analysis to structural performance assessment, fragility function development and use, and system identification, it is important not to lose site of the underlying physical mechanisms that cause phenomena. Dr. Jampole will highlight the benefits of physics-based models and where they don’t suffer some issues that currently plague machine learning, including sparse data, correlated predictors, epistemic uncertainty estimation, analysis context, and extrapolation.

In addition, Gitanjali Bhattacharjee, Ph.D., Exponent associate, will speak on “More Efficient Bridge Seismic Retrofit Prioritization Using Surrogate Model-Based Sensitivity Analysis” during the technical session Seismic Investigations of Transportation Systems and Buildings on Thursday, June 30, at 3:30 p.m. Global variance-based sensitivity analysis can be an effective tool for prioritizing bridge retrofits within regional road networks subject to uncertain seismic hazard while avoiding the combinatoric costs of exhaustive searches. However, if retrofits are prioritized with respect to the road network’s performance, the computational burden of estimating bridges' sensitivity (Sobol’) indices may still be considerable due to the number of traffic simulations required. Using surrogate models to compute bridges’ Sobol’ indices will allow analysts to apply this retrofit prioritization method to more bridges, consider larger sets of earthquake scenarios, and use more sophisticated traffic models to characterize network performance.

Troy A. Morgan, Ph.D., P.E., Exponent principal engineer & practice director, and John D. Osteraas, Ph.D., P.E., Exponent corporate vice president & principal engineer, will also be in attendance.

Exponent is a proud sponsor of the EERI 12NCEE.

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