BEHAVIOR OF LONG SPAN RIGID FRAME RC BRIDGES SUBJECTED TO SPATIAL VARYING GROUND MOTION: (1) GENERATION OF SPATIAL VARYING GROUND MOTION BASED ON PHASE DIFFERENCE SPECTRUM

JIANG Hai-peng; HUANG Guo-hui; YANG Qing-shan

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Journal of Railway Engineering Society ›› 2001, Vol. 18 ›› Issue (2) : 37-46.

BEHAVIOR OF LONG SPAN RIGID FRAME RC BRIDGES SUBJECTED TO SPATIAL VARYING GROUND MOTION: (1) GENERATION OF SPATIAL VARYING GROUND MOTION BASED ON PHASE DIFFERENCE SPECTRUM

JIANG Hai-peng, HUANG Guo-hui, YANG Qing-shan

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Abstract

This paper presented a method to simulate the spatial varying ground motion with time-frequency non-stationarity, which combined the knowledge of stochastic process and phase-difference spectrum. This method with some empirical power spectrum density (PSD) models, coherency function models and the models of apparent velocity can make it easy and directly to be done that generates the spatial varying ground motions because of importing the concept of phase-difference. At last, some illustrations were presented to prove that this method aforementioned is effective and can be used in the response analyses of structure subjected to multiple input ground motion.

Key words

spatial varying ground motion / phase difference spectrum / time-frequency non-stationarity / coherency function model

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JIANG Hai-peng, HUANG Guo-hui, YANG Qing-shan. BEHAVIOR OF LONG SPAN RIGID FRAME RC BRIDGES SUBJECTED TO SPATIAL VARYING GROUND MOTION: (1) GENERATION OF SPATIAL VARYING GROUND MOTION BASED ON PHASE DIFFERENCE SPECTRUM[J]. Journal of Railway Engineering Society, 2001, 18(2): 37-46

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