密肋复合墙体稳定系数数值法分析及简化计算

Numerical method analysis and simplified calculation of the buckling coefficient of the multi-Ribbed composite wall

利用有限元方法,以墙体高度、边框柱截面尺寸、肋柱及肋梁布置等作为主要变化参数,对密肋复合墙体在竖向荷载作用下平面内、出平面极限荷载及稳定系数等进行了有限元数值计算,对墙体的破坏特征、稳定系数的影响因素以及砌块对墙体的抗压贡献等进行了分析.通过对有限元计算结果数据的线性回归,给出了密肋复合墙体轴心受压承载力计算公式中稳定系数的简化计算公式,使复合墙体轴心受压承载力计算方法得到了进一步完善,其有限元计算结果可作为复合墙体结构设计的参考.

Utilizing Finite Element method, and using wall height, cross-section size of end frame column, and arrangement of ribbed column and ribbed beam as parameters, this paper makes numerical calculation in limit load of in-plane and out-plane and buckling coefficient of the multi-ribbed composite wall, and analysis for failure feature, influencing factors of buckling coefficient and contribution of in-filled blocks for resist compress of composite wall. The paper put forward simplified calculation formula of buckling coefficient by using linear regression for calculation results, and computational method of axial compression bearing capacity of the composite wall is perfected further. The results of finite element analysis can be used as reference for design of the composite wall .