港珠澳大桥收费大棚超高桅杆的非线性有限元分析

Nonlinear Finite Element Analysis on Guyed Mast for Hongkong-Zhuhai-Macao Bridge Project Charge Shed

钢管混凝土结构能充分发挥混凝土和钢材两种材料的特点,且具有综合经济效益好、强度高、延性好、抗震性能优越、施工周期短等优点。本文以某70.95m高的异形钢管混凝土桅杆为研究对象,利用通用有限元软件ABAQUS进行了比较系统的三维非线性有限元分析,研究了这类塔架的静力、动力性能和破坏形态,为工程设计提供参考依据。

Concrete-Filled steel structures can take advantage of both pure steel and concrete material,they are more and more widely used for the advantages such as more economical,higher strength,better rigidity and seismic performance,short construction period and so on.The research mainly focuses on irregular CFST guyed mast(70.95m),3-D nonlinear finite element analysis is used to analyze these structures.This paper discusses the static and dynamic performance,damage degree and provides the basis for engineering design.