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Critical Seismic Excitation for Structures

by R. Narayana Iyengar, Indian Inst of Science, India,



Document Type: Proceeding Paper

Part of: Structural Safety and Reliability

Abstract:

Critical seismic excitations are defined as stationary random functions with a given variance, which maximize the response variance of a linear structural dynamic system. A method is presented for arriving at the analytical solutions. Numerical results are presented for a nuclear power plant structure such that the lateral acceleration at a particular floor level is a maximum. The response spectrum of the critical excitation is also found. It is found that the results obtained are quite realistic.

Subject Headings: Seismic tests | Seismic design | Power spectral density | Power plants | Dynamic structural analysis | Structural systems | Structural dynamics

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