【摘要】 对混合结构的承重纵墙进行非线性全过程分析,计算简图是由钢筋混凝土梁和砖砌体柱组成的组合平面框架,采用实际刚度法的杆系模型。分析结果表明,墙体的约束弯矩与上部压力及梁的上部钢筋面积紧密相关;在加载过程中,墙体不断发生内力重分布;变截面墙体会出现弯矩变号,最大弯矩不一定与最大荷载对应,同时指出了线弹性分析方法所得计算结果的误差较大,并分析了原因。更多还原

【Abstract】 A nonlinear full-range analysis of bearing brick masonry longitudinal wall has been carried out in this paper. A combination plane frame composed of RC beams and brick masonry columns is choosed as computational diagram. Bar system model with actural rigidity method is employed. The analysed results show the bending movements of the wall are closely related with its axial compressive force and the area of the upper side reinforcement of the beams. The redistribution of the internal forces of the wall is existed within the whole loading range. The bending movements of the wall with nonuniform cross section will change from being positive to negative and the maximum of the bending movement isn’t alaways in correspodence with maximun loads. At the same time, authors analyse the causes why elastic analysis results are inaccurate.更多还原