太原远大购物中心B区1#商业综合楼超限结构设计

Over limit structural design of 1# commercial complex building in zone B of Taiyuan Yuanda Shopping Center

太原远大购物中心B区1#商业综合楼建筑高度34.50m,主体结构采用钢筋混凝土框架结构体系。主要介绍了工程特点和超限情况,并针对超限情况提出抗震性能化目标及加强措施,从而保证结构安全可靠,经济合理。采用盈建科和PMSAP软件对结构进行了多遇地震下的计算对比,并有效解决了凹凸尺寸较大和局部存在穿层柱不满足规范要求的问题;采用盈建科软件进行了设防地震及罕遇地震下的抗震性能设计,并通过推覆分析(即静力弹塑性分析方法)进行罕遇地震作用下主体结构的弹塑性变形及结构构件损伤机制分析,通过计算结果,采取一定的加强措施。结果表明,结构计算和加强措施是安全有效的,能够实现“三水准”抗震性能设计目标。

The building height of 1# Commercial Complex Building in Zone B of Taiyuan Yuanda Shopping Center is 34.50m, and the main structure is a reinforced concrete frame structure system. This paper mainly introduces the engineering characteristics and out of limit conditions, and puts forward the anti-seismic performance objectives and strengthening measures for out of limit conditions, so as to ensure the safety, reliability, economy and rationality of the structure. Yingjianke and PMSAP software are used to calculate and compare the structure under frequent earthquakes,and the problems of large concave convex size and local through layer columns that do not meet the specification requirements are effectively solved. Yingjianke software is used to design the seismic performance under the fortification earthquake and rare earthquake, and the elastic-plastic deformation of the main structure and the damage mechanism of the structural members under the rare earthquake are analyzed through pushover analysis(i.e. static elasto-plastic analysis method). Through the calculation results, certain strengthening measures are taken. The results show that the structural calculation and strengthening measures are safe and effective, and can achieve the "three levels" seismic performance design goal.