Seismic Responses Analysis of a Railway Suspension Bridge Under Longitudinal Non-Uniform Excitations

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Journal of Vibration and Shock ›› 2014, Vol. 33 ›› Issue (22) : 157-163.

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Seismic Responses Analysis of a Railway Suspension Bridge Under Longitudinal Non-Uniform Excitations

Yang Haiyang 1 Zhong Tieyi 1 Xia He 1

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Abstract

Based on the general finite element software ANSYS, seismic responses under non-uniform excitations of a long-span railway suspension bridge are studied in this paper. Two different input methods, traveling seismic wave excitation and multi-support excitation, are used to analyze the seismic responses of the bridge, and then response regulations are discussed. By studying differences of the response control modes, the influence mechanisms of the non-uniform excitations are discussed, thus the fundamental differences between effects of the two input methods are revealed. These results can provide an important basis for the seismic analysis of the suspension bridge.

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suspension bridge / non-uniform excitation / control modes / travelling wave effect / multi-support excitation

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Yang Haiyang Zhong Tieyi Xia He . Seismic Responses Analysis of a Railway Suspension Bridge Under Longitudinal Non-Uniform Excitations[J]. Journal of Vibration and Shock, 2014, 33(22): 157-163