摘要
目的探讨板柱-剪力墙结构的抗震性能,推广其在抗震区应用.方法采用三维实体单元建模,对无边梁,设边梁的板柱-剪力墙结构及框架-剪力墙结构进行弹塑性时程分析.结果对比了三种结构的基底剪力及顶点侧移时程曲线,塑性铰出铰及能量耗散情况,研究了地震波加速度大小对结构地震响应的影响,给出了Taft波激励下结构的倒塌机制和相应的地震波加速度峰值.结论建造在Ⅰ～Ⅲ类场地上的,合理设计的9层板柱-剪力墙结构在8度罕遇地震作用下的最大弹塑性层间位移角小于1/100,结构未形成倒塌机制.Taft波激励下,结构形成倒塌机制时所对应的地震烈度在10度以上,设边梁板柱-剪力墙结构的抗震性能和框架-剪力墙结构比较接近.
The purpose of this paper is to study the seismic behavior of slab-column and shearwall structure to popularize it in seismic region.Using three-dimensional models,nonlinear time-history analysis of slab-column and shearwall structure without and with edge beams,and frame-shearwall structure are carried out.The analy-sis results give the comparison of time-history curves of base shear and top drift,conditions of plastic hinges distribution and energy dissipation among different structures.Besides,the effect of soil site conditions and the size of seismic wave acceleration on the structural seismic response were researched,and failure mechanisms subjected to Taft wave and the corresponding maximal acceleration value were given.The conclusion shows that for 9-story slab-column-shearwall structure designed suitably which is built in Ⅰ ～ Ⅲ soil site and under rare earthquake of intensity 8,the maximum elastic-plastic story drift angle is less than one percent and no failure mechanisms is formed.Under Taft waves,the seismic intensity which causes the failure mechanisms is more than 10,and the seismic behavior of slab-column-shearwall structure with edge beams is similar to that of the frame-shearwall structure.
出处
《沈阳建筑大学学报（自然科学版）》
CAS
北大核心
2010年第6期1058-1065,共8页
Journal of Shenyang Jianzhu University：Natural Science
基金
国家自然科学基金项目(51008054)
关键词
板柱-剪力墙结构
弹塑性时程分析
倒塌机制
抗震性能
slab-column and shearwall structure
nonlinear time-history analysis
failure mechanisms
seismic behavior
