某大跨度张弦结构仿真分析及施工技术

SIMULATION ANALYSIS AND CONSTRUCTION TECHNOLOGY OF A LARGE SPAN STRING STRUCTURE

安徽广播电视中心东区采光顶钢结构为空间张弦桁架结构体系,上部为钢结构体系,下部由径向24道高强拉索和环向3道高强拉杆组成。通过空间异形张弦结构施工方法选定、施工流程、对各阶段施工仿真分析以及施工过程中临时支撑胎架、变形监测,采用有限元计算软件ANSYS对钢结构应力和变形进行仿真计算,使结构按预期的形态安装成型,保证了施工过程的安全性。

The space truss string structure system was used in skylight steel of Anhui Radio and Television Center, whose upper part is a steel structure system and the lower part is composed of 24 radial high strength bracing cables arid 3 circumferential high strength pull rods. It was introduced choice of the space profiled string structure construction method, the construction process, erection rack of temporary support in construction process, construction simulation analysis of various stages, and deformation monitoring. The stress and deformation of the steel structures were simulated by ANSYS software, thus installing the structure according to the expected form, and the construction safety was ensured.