不同布桩形式对桥墩地震响应的影响

Influences of Different Pile Arrangements on Seismic Response of Bridge Piers

该文结合典型工程实例,对五种不同的桩基布置形式建立有限元模型,分析不同布桩形式对桥墩地震内力的影响。在水平地震荷载作用下,增加桩基的刚度和数量不一定能改善桥墩受力,需要在顺桥向和横桥向分别输入地震波综合考虑桥墩地震响应,从而得到合理的桩基布置。

Combined with the typical engineering cases,the article sets up the finite element model for five different arrangement types of pile foundation,and analyzes the influence of the different pile arrangements on the seismic response of pier.The increment of rigidity and quantity of pile foundation can not always improve the pier stress under the horizontal seismic action,and it is required to separately longitudinally and laterally input the seismic waves to comprehensively consider the seismic response of pier so as to achieve the reasonable arrangement of pile foundation.