大型张拉临时舞台结构抗震仿真分析

Simulation analysis on aseismic performance of large temporary stage tensile structure

基于找形方法提出了张拉结构大型临时舞台实际成形位置,利用ABAQUS对张拉结构模型进行了地震模拟性态分析,提出了大型张拉临时舞台结构多遇地震及罕遇地震作用的时程分析方法,建立了大型张拉临时舞台结构内力和位移的时程计算方法,获得了不同初始预应力对大型张拉临时舞台结构抗震性能的影响。文中提出的大型张拉临时舞台抗震计算方法对安全设计具有重要的实际指导意义。

The actual structural model of large temporary stage using tension structure based on shape-finding method is described. This paper carried out simulation analysis of aseismic performance to tension large temporary stage using commercial FEA software ABAQUS. The pertinent time-history computation proceeding of frequent and rare earthquake of temporary tension structure is present. The detail of calculation of temporary tension structure inner force and distortion is also discussed and established. The impact of initial prestress to anti-seismic capability at various of prestress level is obtained. The proposal computation method which aims to large temporary stage tension structure shock resistance quantitative analysis is valid and reliable. The present method possesses of important practical guiding significance in safety large temporary tension structure design.