同济大学学报（自然科学版）2025，Vol.53Issue(12)：1815-1824,10.DOI:10.11908/j.issn.0253-374x.24239
异形钢桁架-混凝土组合剪力墙剪力滞后效应及骨架曲线
Shear Lag Effect and Skeleton Curve of Special Shaped Steel Truss-Concrete Composite Shear Wall
摘要
Abstract
To investigate the mechanical performance of composite shear walls with irregular steel trusses and concrete,the shear lag effect and skeleton curve were studied.Based on the principle of minimum potential energy,the energy variational method was used to calculate the longitudinal stress distribution inside the flange.The effective coefficient was introduced to consider the role of the end section steel vertical rod of the flange in resisting horizontal loads on the wall.The stress and strain distribution of the bottom section of the shear wall in different stress states were analyzed according to the assumption of a plane section,and the moment curvature relationship of the section was obtained.The load on the top of the wall was calculated based on the bending moment,while the displacement of the top of the wall was calculated based on the curvature distribution and shear stiffness of the wall.A skeleton curve analysis method considering shear lag effect was established based on the characteristic points of cracking point,yield point,peak point,and limit point.Experimental results show that this method can accurately predict the mechanical performance of special-shaped steel trusses-composite shear wall.关键词
异形组合剪力墙/剪力滞后/有效系数/骨架曲线/桁架比拟法Key words
special-shaped composite shear wall/shear lag/effective coefficient/skeleton curve/truss analogy method分类
建筑与水利引用本文复制引用
王卫永,杨启波,王领军..异形钢桁架-混凝土组合剪力墙剪力滞后效应及骨架曲线[J].同济大学学报（自然科学版）,2025,53(12):1815-1824,10.基金项目
国家自然科学基金(51878096) （51878096）
