NEES @ UC San Diego
Performance-Based Seismic Design for Reinforced Masonry Shear-Wall Structures Large-Scale Validation of Seismic Performance of Bridge Columns Collapse Vulnerability and Seismic Design of Metal Building Systems Seismic Study of Wind Turbines for Renewable EnergySeismic Design of Retaining Walls with/without Sound Wall Seismic Response of a 7-Story RC Building
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NHERI @ UC San Diego Large High Performance Outdoor Shake Table

The world's first outdoor shake table is also the largest in the U.S. learn more

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Joint NHERI Workshop Series: Lehigh - UC San Diego - UC Berkeley

Workshop - 1: September 23-24, 2019 at Lehigh
Workshop - 2: December 16-17, 2019 at UC San Diego
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Current Project

Seismic Performance of Collectors in Steel Building Structures

Collectors are key structural elements in the Seismic Force-Resisting System (SFRS), delivering the inertial forces that develop in the floor system to the primary (vertical plane) lateral force-resisting elements. In contrast to the vertical-plane SFRS elements (shear walls, braced frames, moment frames, etc.), no research efforts or experimental program to date has focused specifically on collectors. Instead, design procedures for collectors have traditionally applied special seismic load combinations in ASCE-7 involving the application of the System Overstrength Factor. The rationale for this stringent prescriptive rule is an attempt to ensure that collectors and their connections remain elastic, thereby maintaining the structural integrity of the SFRS. Also, design engineers use a variety of connections for the collectors, and practically no research has been conducted to validate the adequacy of these connection details.

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Seismic Collector Project ElevationFull Size Seismic Collector Project Floor PlanFull Size

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The Large High-Performance Outdoor Shake Table is supported in part by the George E. Brown, Jr. Network for Engineering Simulation (NEES) program of the National Science Foundation under Award Number CMMI-0927178.

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