Design for Lateral Loads/Systems

Single Abstract

335682 - Seismic Risk Assessment of an Alternate Seismic Design Methodology for Rigid Wall-Flexible Roof Diaphragm Buildings

Friday, April 20
11:00 AM - 12:30 PM
Location: 204AB

Rigid Wall-Flexible roof Diaphragm (RWFD) buildings, commonly referred to as “big-box” buildings, is the most prevalent type of construction for low-rise industrial and warehouse facilities in the United States (US) and many other countries all over the world. These buildings usually incorporate rigid-in plane concrete tilt-up walls and flexible wood roof diaphragms. Their vulnerability has been observed in high seismic areas (e.g. California) and, as a result, an alternative seismic design methodology was introduced by FEMA to account for the response of the flexible roof diaphragm. The FEMA P1026 design approach has been validated through collapse assessment studies. In this study, the Performance-Based Earthquake Engineering framework developed by the Pacific Earthquake Engineering Research (PEER) center, combined with Monte Carlo Simulation was used to probabilistically evaluate the earthquake-induced economic losses for these structures. The results are presented in terms of expected losses for two levels of seismic intensity: 10% in 50 years and 2% in 50 years, while loss disaggregation plots for collapse and no-collapse are also presented. These metrics show the efficiency of the FEMA P1026 design approach to reduce earthquake losses compared to current code-conforming RWFD buildings.
•Considering that buildings with rigid walls and flexible roof diaphragms are extensively used for low rise industrial and commercial structures and have suffered economic losses from structural damage during past earthquake events, this presentation would be of national and international interest.
•The target audience will be design professionals, code developers, insurers, government planners, catastrophe modelers, portfolio managers and researchers in academia and industry involved in the analysis and design of RWFD buildings.

Maria Koliou

Assistant Professor
Texas A&M University
Texas A&M University

Dr. Koliou is an Assistant Professor at the Zachry Department of Civil Engineering at Texas A&M University. She joined the department after having been a Post-doctoral Fellow at the NIST-funded Center of Excellence for Risk-based Community Resilience Planning at Colorado State University. She received her Diploma (2008) in Civil Engineering from the University of Patras, Greece, while she holds Master’s (2010) and PhD (2014) degrees from the University at Buffalo (UB). Her research interests span the fields of structural dynamics, earthquake engineering, and multi-hazard performance-based design for system functionality and community resilience. Through these areas, her research focuses on developing novel sustainable structural designs and systems against natural and man-made hazards and formulating fundamental mathematical frameworks to assess system functionality and community resilience.
She is a member of the NEHRP Provisions Update Committee IT-9 as well as ASCE technical committees including the SEI Design of Wood Structures Committee, the SEI Disaster Resilience of Structures, Infrastructure & Communities Committee and the EMI Objective Resilience Committee. She also serves as the co-chair of the EERI's Younger Members committee. She has received several awards and scholarships for outstanding research, teaching, and service. Her recent awards include the 2015 SEI Best-of-the-Best Poster Award, the 2014 Liu-Huixian Earthquake Engineering Award, the 2013 UB’s Irving H. Shames Outstanding Teaching Assistant Award and the 2011 UB Chair’s Graduate Recognition Award.


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John W. van de Lindt

George T. Abell Distinguished Professor in Infrastructure, Co-Director, Center for Risk-Based Community Resilience Planning
Colorado State University

Dr. John W. van de Lindt is the George T. Abell Distinguished Professor in Infrastructure in the Department of Civil and Environmental Engineering at Colorado State University. Over the last two decades Dr. van de Lindt’s research program has sought to improve the built environment by making structures and structural systems perform to the level expected by their occupants, government, and the public. This has been primarily through the development of performance-based engineering and test bed applications of building systems for earthquakes, hurricanes, tsunamis, tornadoes and floods. To accomplish this has necessitated coupling nonlinear dynamics, including stochastic approaches in both time and space with structural reliability during extreme loading events. His work includes both the development of new nonlinear numerical models and a large number of experimental investigations to calibrate those models and support hypotheses. Professor van de Lindt current serves as the Co-director for the National Institute of Standards and Technology-funded Center of Excellence for Risk-Based Community Resilience Planning headquartered at Colorado State University. The NIST COE is a 10-university collaboration and seeks to develop the computation environment needed to enable quantification of community resiliency to natural hazards. He has published more than 350 technical articles resulting from approximately 40 federal, state, and industry sponsored projects.


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Andre Filiatrault

Dept. of Civil, Structural and Environmental Engineering, University at Buffalo - The State University of New York, and School for Advanced Studies IUSS Pavia



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335682 - Seismic Risk Assessment of an Alternate Seismic Design Methodology for Rigid Wall-Flexible Roof Diaphragm Buildings

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