Effect of near-fault earthquake on bridges: lessons learned from Chi-Chi earthquake |
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Authors: | Email author" target="_blank">Chin-Hsiung?LohEmail author Wen-I?Liao Juin-Fu?Chai |
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Institution: | 1. Department of Civil Engineering, Taiwan University, and Center for Research on Earthquake Engineering, Chinese Taipei 2. Center for Research on Earthquake Engineering, Chinese Taipei |
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Abstract: | The objective of this paper is to describe the lessons learned and actions that have been taken related to the seismic design
of bridge structures after the Chi-Chi, Taiwan earthquake. Much variable near-fault ground motion data was collected from
the rupture of Chelungpu fault during the Chi-Chi earthquake, allowing the seismic response of bridge structures subjected
to these near-fault ground motions to be carefully examined. To study the near-fault ground motion effect on bridge seismic
design codes, a two-level seismic design of bridge structures was developed and implemented. This design code reflects the
near-fault factors in the seismic design forces. Finally, a risk assessment methodology, based on bridge vulnerability, is
also developed to assist in decisions for reducing seismic risk due to failure of bridges.
Director of Center for Research on Earthquake Engineering.
Supported by: the Science Council, Chinese Taipei, under grant no. SC 90-2211-E-002-028. |
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Keywords: | Chi-Chi earthquake near-fault bridge seismic design risk assessment |
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