多联连续梁桥快速MPA方法

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (16) : 195-199.

论文

多联连续梁桥快速MPA方法

曹飒飒1,2，钟剑，1袁万城1

作者信息 +

Rapid MPA method for multiple multi-span continuous bridges

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

Author information +

文章历史 +

摘要

提出针对多联连续梁桥的快速MPA方法。通过等位移准则计算控制点目标位移，结合MPA方法进行多联连续梁桥快速多模态推倒分析，能极大简化多模态推倒分析步骤。以某3联连续梁桥为例，将等位移准则计算的控制点位移近似作为多模态推倒分析目标位移，用快速MPA方法对其抗震性能进行评估。与非线性动力时程分析结果对比表明，快速MPA方法可有效评估多联连续梁桥抗震性能。

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.

导出引用

曹飒飒1,2，钟剑，1袁万城1. 多联连续梁桥快速MPA方法[J]. 振动与冲击, 2015, 34(16): 195-199

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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