高压输电塔地震作用下的连续性倒塌分析

Progressive collapse analysis of high-voltage transmission tower under earthquake action

利用大型有限元分析软件ABAQUS和开发的子程序,分别对某输电塔进行了单向地震作用和三向地震作用下的连续性倒塌分析,研究了输电塔的薄弱部位和连续性倒塌全过程。分析结果表明,采用编制的子程序可以确定输电塔的薄弱部位,可以清晰地得到输电塔在地震作用下的连续性倒塌全过程,输电塔在三向输入作用下更容易发生倒塌。

By using the finite element program ABAQUS and coded subroutine, the progressive collapse analysis of a transmission tower under unidirectional input and three-component excitation is conducted. The vulnerable point and progressive collapse process are studied. The results show that the vulnerable point of transmission tower can be determined, and the progressive collapse process can be obtained clearly with the coded subroutine. The tower is more prone to collapse under three-component excitation.