双层波纹钢板混凝土组合剪力墙抗剪承载力研究

Research on shear capacity of double-skin corrugated plates and concrete composite shear wall

为了研究双层波纹钢板混凝土组合剪力墙抗剪承载力,先对组合剪力墙横截面进行等效以简化计算。借鉴钢管混凝土统一理论思想,假定将剪力墙受扭全由外包钢承担,根据边缘屈服准则算得剪力墙极限状态下的极限扭矩;将波纹钢板混凝土组合剪力墙看作同一种材料,通过极限扭矩反推得组合剪力墙整体抗剪最大剪应力,再乘上横截面积即得波纹钢板混凝土组合剪力墙抗剪承载力。后采用Abaqus软件建立了24个不同尺寸、材料参数下的波纹钢板混凝土组合剪力墙有限元模型进行分析,并将公式与当前规范中双层波纹钢板混凝土组合剪力墙抗剪承载力计算公式进行对比,验证了公式是合理可行的。

To research the shear bearing capacity of double-skin corrugated plates and concrete composite shear wall,based on the idea of the unified theory of concrete-filled steel tube,equivalent cross section of composite shear wall was made to simplify calculation.It is assumed that the torsion of the shear wall is borne by the wrapped steel,and the ultimate torque of shear wall in the limit state is calculated according to the edge yield criterion;Taking the double-skin corrugated plates and concrete composite shear wall as the same material,the maximum shear stress of the composite shear wall is deduced through the ultimate torque,and then multiplied by the cross-sectional area to obtain its shear bearing capacity.Afterwards,24 finite element models of double-skin corrugated plates and concrete composite shear wall under different sizes and material parameters are established by using ABAQUS software for analysis,and the formula is compared with the calculation formula of shear capacity of double-skin corrugated plates and concrete composite shear wall in the current code,which verifies that the formula is reasonable and feasible.