立面开大洞的框—筒结构在罕遇地震作用下的弹塑性分析

Elastic-plastic Analysis of Seismic Behaviors of Frame-core Wall Structure with Large Openings in the Elevation under Rare Earthquakes

用ANSYS分析软件建立有限元模型,对平面不规则、立面开大洞结构进行弹塑性时程分析.得到在动力荷载下结构周期比T3/T1<0.85,层间位移角<1/100,分别满足规范要求,洞口楼层梁柱节点处受力复杂,裂缝由上而下开展,最终裂缝贯通,并对结构中需要加强措施的有关部位提出了建议.

The elasto-plastic time-history analysis of a complex high-rise building model with irregularity in the plane and large openings in the elevation was first carried out.Under the dynamic loads,we can obtain the structure period ratio T3 /T1 which is less than 0.85,and whose interlayer displacement angle is less than 1/100,both of which meet the norms separately.The stress of the beam-column joints near the entrance is complex and whats more,the crack develops from top to bottom,and it goes through finally.The factors influencing the column under the dynamic loads are explored.Besides,some suggestions are made for vital parts of the structure to be strengthened in the design.