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重庆某大型商业裙房,为带部分剪力墙的框架结构,建筑和结构平面的开洞较多,就形成了薄弱连接的不规则平面。抗震设计中楼板应具备比抗侧力构件更高的抗震性能,针对本工程的结构特点,确定了楼板抗震设计性能目标及预期的震后性能状态,采用ABAQUS进行了结构整体的弹塑性时程分析,根据规范规定进行了楼板的受剪承载力计算,从内力和损伤进行了对比。分析结果表明,经过设计加强后的薄弱连接部位的楼板可以满足预定的性能目标。
A large-scale commercial podium in Chongqing is a framed structure with some shear walls, with more holes in the plane of the building and structure, forming an irregular plane of weak connection. The aseismic design of the floor should have higher than the anti-lateral component of the seismic performance, aiming at the structural characteristics of the project, to determine the seismic performance of the target design and the expected seismic performance status, the structure of the overall elastic-plastic time history According to the rules and regulations, the calculation of the shear capacity of the floor slab is carried out, and the internal force and damage are compared. The results of the analysis indicate that the slab, which has been designed to be weakened, can meet the predetermined performance target.