【摘要】 对4种剪力墙典型布置方案的板柱-剪力墙结构进行有限元分析,研究了其动力特性,扭平周期比及在考虑偶然偏心影响的地震作用下楼层的扭转位移比,评价了剪力墙布置对此类结构扭转效应的影响.研究结果表明:剪力墙集中布置在中部时,结构的抗侧刚度较大,分散布置于周边时,结构的抗扭刚度较大;结构楼层的扭转位移比与沿受力方向质心与刚心是否重合及结构抗扭刚度两方面因素有关,质心与刚心是否重合对结构扭转效应的影响更为明显.更多还原

【Abstract】 Finite element analysis is applied to the slab-olumn and shearwall structure of four kinds of typical shear walls.The dynamic characteristics,the ratios of torsion periods to translation periods and the ratio of maximal elastic drifts to average drifts are investigated when the earthquake action and the condition of the accidental eccentric influence are considered.The influence of the torsion response on the shear walls arranged in slab-column and shearwall structure is assessed.The results show that the lateral rigidity of the structure is bigger,when the shear walls are arranged in the middle,and when they are arranged in the edge,the torsion stiffness of the structure is bigger.The ratios of each story maximal elastic drifts to average drifts are in connection with the torsion stiffness of the structure and the question whether the center of quality and the center of stiffness along stress direction are coincident or not.The former has more influence on the torsion response of structure.更多还原