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EARTHQUAKE GROUND MOTIONS AND SITE EFFECTS ON SEISMIC PERFORMANCE OF BRIDGES IN SHANGHAI ZONE

Wancheng Yuan, Fan Li-chu, Yang Yu-Min

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Abstract

The response spectrums of typical earthquake ground motions in Shanghai zone are analyzed and compared, and the site effects on seismic performance of bridges is observed and studied. The seismic performance of two important bridges in Shanghai is assessed under different earthquake waves with different potential earthquake sources and different grades. The bridges in Shanghai zone, as it showed with the results, should have higher seismic capacity than normal bridges. The response spectrum in seismic code for urban bridges should be modified adequately.

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What this paper is about

The response spectrums of typical earthquake ground motions in Shanghai zone are analyzed and compared, and the site effects on seismic performance of bridges is observed and studied. The seismic performance of two important bridges in Shanghai is assessed under different earthquake waves with different potential earthquake sources and different grades. The bridges in Shanghai zone, as it showed with the results, should have higher seismic capacity than normal bridges. The response spectrum in seismic code for urban bridges should be modified adequately.

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Available abstract

The response spectrums of typical earthquake ground motions in Shanghai zone are analyzed and compared, and the site effects on seismic performance of bridges is observed and studied. The seismic performance of two important bridges in Shanghai is assessed under different earthquake waves with different potential earthquake sources and different grades. The bridges in Shanghai zone, as it showed with the results, should have higher seismic capacity than normal bridges. The response spectrum in seismic code for urban bridges should be modified adequately.

Key concepts: Seismic microzonation, Environmental Seismic Intensity scale, Seismology, Seismic zone, Earthquake simulation, Geology, Response spectrum, Mitigation of seismic motion

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