摘要
隔震多塔楼串联上部结构的连接板,会承受很大的水平力,而连接板能可靠传递水平力是多塔楼整体隔震结构方案的重要前提条件,若连接板提前受损或破坏,结构的整体性将会降低.为保证连接板不早于上部结构发生破坏,本文以一大底板多塔楼隔震结构案例为基础,提出基于主应力的底板承载力验算及配筋设计方法,首先利用ETABS有限元分析软件对某大底板双塔楼隔震结构进行隔震设计,并对底板进行配筋设计和抗震性能验算,最后根据配筋设计结果,利用SAUSAGE非线性分析软件,分析罕遇地震下底板的损伤.结果表明:采用大底板多塔楼隔震方案以后,上部结构的抗震性能均能满足规范要求,根据主应力进行抗震设计的底板能够满足各地震水准的性能目标,罕遇地震下,底板未先于上部结构发生破坏,仍能保证结构整体的整体性.
Abstract
The connecting plate of the seismic isolation multi-tower series superstructure will withstand a large horizon-tal force,and the connecting plate can reliably transmit the horizontal force is an important prerequisite for the overall seismic isolation structure scheme of multiple towers,if the connecting plate is damaged or destroyed in advance,the integrity of the structure will be reduced.In order to ensure that the connecting plate should not be damaged earlier than the superstructure,this paper proposes a design method for the bearing capacity of the floor based on the main stress based on the case of seismic isolation structure of multiple towers with a large floor and multiple towers,and first uses ETABS finite element analysis software to design the seismic isolation structure of a large floor double tower,and the reinforcement design and seismic performance of the floor are calculated.Finally,according to the reinforce-ment design results,SAUSAGE nonlinear analysis software is used to analyze the damage of the floor under rare earth-quakes.The results show that after adopting the seismic isolation scheme of large floor and multiple towers,the seismic performance of the superstructure can meet the requirements of the specification,and the floor plate designed accord-ing to the main stress can meet the performance goals of each seismic level.
维普
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