混凝土网格式框架抗侧性能影响因素分析

Influence Factor Analysis of the Anti Side Performance of Concrete Frame Structure

网格式框架是在框架基础上由边柱、楼层梁、中柱和层间梁正交构成,本文对其考虑梁、柱刚度的影响,采用有限元分析方法进行抗侧性能分析。结果表明:与框架结构相比,中柱和层间梁的设置可以使结构内力分布更加均匀,有效降低结构内力峰值和提高结构抗侧刚度;提高边柱和中柱刚度可以有效改善结构的抗侧刚度,但边柱刚度的提高对中柱和层间梁内力变化梯度的影响较小,而中柱刚度提高可以降低楼层梁和边柱的弯曲内力,但对层间梁内力变化梯度的影响不大;相对于柱刚度的变化,楼层梁和层间梁刚度改变分别对其余构件内力的改善意义不大,对结构抗侧刚度的提高作用相对较弱。

The frame is composed of a side column, a floor beam, a middle column and a floor beam. In this pa- per, considering its influence on beam and column stiffness, the finite element method was used to analyze the lateralo The results show that compared with the frame structure, column and interlayer beam settings can make the internal force distribution more uniform, effectively reduce the internal force peak and improve the lateral stiffness of the structure; improve the side column and the column stiffness can effectively improve the lateral stiffness of the structure, but increasing the rigidity of the side column has little effect on the column of layer and gradient beam internal force changes, while the column stiffness can reduce the bending force of floor beams and columns, but have little effect on the interlaminar deformation of beams with variable gradient change ; relative to the stiffness, floor beams and interlayer stiffness change respectively to the rest of the internal force of improving meaningful role to improve the lateral stiffness of the structure is relatively weak.