霍尔果斯文体中心复杂连体网架计算分析

Analysis and design of complex connected grid of Horgos Culture & Sport Center

霍尔果斯文体中心文化馆屋盖采用钢网架结构,网架右侧为大悬挑结构,左侧为复杂的扭转体型网架并支撑在科技馆混凝土边柱及边梁上,形成复杂的连体网架。采用有限元分析软件建立整体模型及独立的网架模型进行对比计算,分析了两种模型的动力性能;采用时程分析法对比两种模型在地震作用下支座位移的差异;最后进行了整体模型罕遇地震下弹塑性时程分析。得到整体模型的振动周期较长且支座位移较大,确定了罕遇地震下支座处的位移量,并用于指导滑动支座的设计。

The Culture Center′s roof of the Horgos Culture & Sport Center is constructed with a steel grid structure, with the right side of the frame being a large cantilevered structure and the left side of the frame being a complex torsional grid supported on the concrete side columns and beams of the Science and Technology Museum, forming a complex connected grid. The finite element analysis software was used to establish the overall model and the independent model of the grid structure for comparison calculation, and the dynamic performance of the two models was analyzed;the difference of pedestal′s displacement between the two models under the action of earthquake was compared by time history analysis method;Finally, the elastic-plastic time history analysis of the overall model under rare earthquake was carried out. Come to the conclusion: The vibration period of the overall model is longer and the pedestal′s displacement is larger. The result of pedestal′s displacement under rare earthquake was determined and used to guide the design of sliding pedestal.