双柱式桥墩桩基非对称加固受力特性研究

Mechanical Behavior of Double-Column Pier by Asymmetric Strengthened

本文以某大桥双柱式桥墩受损桩基补强加固为工程背景,采用空间有限元法计算分析了几种非对称加固桩基方案的受力特性及适用情况。引入考虑刚度折减的非线性有限元法对非对称加固法中桥墩的构件计算长度、偏心距增大系数、桥墩内力重分布等与桥墩纵桥向水平刚度的变化关系进行了研究。研究结果可为类似加固设计工程提供参考。

Based on asymmetric strengthening the double-column pier of a big bridge,this paper studies mechanical behavior of the structure in several common strengthening schemes,by using finite element.And effective length of compression members,eccentricity magnification coefficient,internal force redistribution of a double-column pier have been studied by using geometrical nonlinear finite element with stiffness correction.The results of this paper can make reference for the similar problems.