Soil-Structure Interaction and Performance-Based Earthquake Engineering

Professor Ahmed Elgamal

Three-dimensional (3D) nonlinear nite element simulations are becoming increasingly feasible for geotechnical applications. OpenSeesPL, created by J. Lu, A. Elgamal, and Z. Yang, is a versatile framework that uses a Windows- based graphical-user-interface (GUI) developed for 3D footing/pile-ground interaction analyses. Various ground modi cation scenarios may be addressed utilizing the 3D tool. Building on OpenSeesPL, a new GUI has been developed to combine nonlinear dynamic time history analysis of coupled soil-structure systems with an implementation of performance-based earthquake engineering (PBEE) for a single-column 2-span bridge con guration (research with Prof. K. Mackie, UCF). In this new interface, functionality is extended for analysis of multiple suites of ground motions and combination of results probabilistically using the Paci c Earthquake Engineering Research Center (PEER) PBEE framework. De nition of the bridge, the underlying ground strata, and the material properties are greatly facilitated via this integrated analysis and visualization platform.

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