带大跨度钢桁架复杂结构抗震分析

Seismic Analysis of Complex Structure with Large-span Steel Truss

为满足建筑造型与使用功能的要求,采用了带大跨度钢桁架的复杂结构布置,形成了特别不规则结构。为满足规范要求,通过对该结构的抗震分析,调整剪力墙与框架柱的布置,改善结构刚度及承载力的均匀性,提高抗扭性能,加强薄弱部位并确保关键构件的安全性。从分析结果来看,虽然该结构刚度过大,但仍然具有一定的耗能性能,并且该结构可以实现“小震不坏,中震可修,大震不倒”,结构整体及其各构件能够达到设定的抗震性能目标。

In order to meet the requirements of the architectural modeling and the building use function,the complex structure arrangement with large-span steel truss is adopted,which can cause the especially irregular structure.In order to meet the code requirements,through the seismic analysis of the structure and the adjustment of shear wall and frame column layout,improve the uniformity of stiffness and bearing capacity of the structure,improve the torsion resistance ability,strengthen the weak parts and ensure the safety of key components.The analysis results show that,the structure has large stiffness,but still has a certain energy consumption property,and can realize the“intact under minor earthquake,repairable under medium earthquake,will not fall down under major earthquake”,the whole structure and all components can achieve the setting target of seismic performance.