连续大跨输煤栈桥在不同地震强度下的时程分析

Seismic Time-history Analysis for Consecutive Large-span Coal Transport Trestle under Different Earthquake Intensity

大跨度输煤栈桥跨度大、受荷复杂,为全面了解此类栈桥结构的抗震性能和寻求合理的设计方法,利用ABAQUS对某连续大跨输煤栈桥进行了不同地震强度下的弹性及弹塑性时程分析。通过对比不同地震动强度下结构的整体反应及构件损伤特征,得出了该栈桥在给定地震波下出现的破坏模式、塑性发展特点及抗震薄弱部位,对其抗震性能做出了结论性评价。

The large-span coal transport trestle is large in its span the seismic performance of this trestle and find a reasonable design and complex in its load. In order to fully understand method, the structural elastic and elastic-plastic time- history analyses under different peak ground acceleration（PGA）are carried out here by using ABAQUS software. Through comparing the overall reaction and component acteristics and seismic weak positions in the performance of the large-span trestle is made damage characteristics, its possible failure mode, plastic development char- given seismic wave are obtained, and the conclusive evaluation of seismic at last.