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Optimization for Earthquake Loads

by Kevin Z. Truman, (A.M.ASCE), Washington Univ, St. Louis, United States,
Franklin Y. Cheng, (M.ASCE), Washington Univ, St. Louis, United States,



Document Type: Proceeding Paper

Part of: Analysis and Computation

Abstract:

Structural optimization for seismic loads can be approached from a deterministic or nondeterministic point of view. Deterministically, the major difference between optimization of statically and dynamically loaded systems is in the constraint gradient formulation. The gradient formulations for UBC equivalent lateral force, modal response spectra and time history seismic analysis for use in a structural optimization are developed. Nondeterministically, major differences occur due to the reliability based analysis and the random nature of the seismic structural problem. Example problems for both the deterministic and nondeterministic systems are presented and discussed.

Subject Headings: Dynamic loads | Seismic loads | Static loads | Structural reliability | Structural analysis | Seismic tests | Lateral loads

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