有限分析钢管和格式塔架的地震响应

Finite Analysis of Seismic Response of Steel Tube and Lattice Tower

摘要: 目的：旨在研究为工程应用设计提供参考的钢管砼格构式塔架的模态分析及地震响应分析。方法：应用有限元软件ABAQUS，通过对材料非线性和几何非线性的合理考虑，利用ABAQUS建立塔架有限元模型，选择地震波，包括钢管与核心混凝土相互作用的影响，地震响应分析，易损性分析等，探究相关参数对地震响应的影响。模型塔架通过ABAQUS非线性有限元软件进行有限元分析，得到塔架各杆件受力分布规律和节点区，从而得到最大荷载时塔架系统截面最薄弱的位置。

Abstract: Objective: The purpose of this paper is to study the modal analysis and seismic response analysis of concrete filled steel tubular lattice tower, which can provide reference for engineering application design. Methods: The finite element software ABAQUS was used to establish the finite element model of the tower and select the seismic wave, including the influence of the interaction between steel pipe and core concrete, seismic response analysis, vulnerability analysis, etc. to explore the influence of relevant parameters on seismic response. The finite element analysis of the model tower is carried out through ABAQUS nonlinear finite element software to obtain the force distribution law and node area of each member of the tower, so as to obtain the weakest position of the tower system section under the maximum load.