Rapid MPA method for multiple multi-span continuous bridges

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (16) : 195-199.

CAO Sa-sa1，2，ZHONG Jian1，YUAN Wan-cheng1

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Abstract

Rapid MPA method is proposed for multiple multi-span continuous bridges. In rapid MPA, target displacements of control points are computed by equal displacement rule. Rapid MPA method greatly simplify the procedure of MPA. For a multiple multi-span continuous bridge, it is shown that control points’ displacements computed by equal displacement rule can be used as target displacements. Rapid MPA of the bridge is conducted for seismic performance evaluation. Compared with time-history analysis, it turns out that rapid MPA is capable of providing reasonable seismic responses of multiple multi-span continuous bridges.

Key words

equal displacement rule / multiple multi-span continuous bridges / rapid modal pushover analysis / target displacement

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CAO Sa-sa1，2，ZHONG Jian1，YUAN Wan-cheng1. Rapid MPA method for multiple multi-span continuous bridges[J]. Journal of Vibration and Shock, 2015, 34(16): 195-199

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