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http://dx.doi.org/10.5000/EESK.2003.7.1.057

Evaluation of Seismic Response for a Suspension Bridge  

김호경 (목포대학교 건축조경토목공학부)
유동호 ((주)유신코퍼레이션)
주석범 (세명대학교 토목공학과)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.7, no.1, 2003 , pp. 57-63 More about this Journal
Abstract
A comparative study was performed for a suspension bridge to grasp the possible differences in seismic responses evaluated by several analytical methods. The items mainly investigated are the linear vs. nonlinear response, the response spectrum method vs. the linear dynamic analysis method, and the damping ratio and it's implementation into analysis procedures. According to the numerical example, it is found that the seismic responses are considerably affected by the damping-related parameters even though slight differences are shown depending on the response quantities and the exciting directions. On the other hand, it is also confirmed that the seismic responses are less affected by the analysis method-related parameters such as the response spectrum method vs. the linear dynamic analysis method, and the linear and nonlinear analysis method. The response spectrum method is expected to give conservative results for the examined bridge, provided that the design response spectrum in the Korean Highway Design Specification is modified according to the proper damping ratio.
Keywords
suspension bridge; seismic response; nonlinear; response spectrum method; dynamic analysis method; damping earthquake;
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