建筑钢结构进展2025，Vol.27Issue(7)：44-53,10.DOI:10.13969/j.jzgjgjz.20240310001
不同厚度轻钢桁架轻混凝土组合墙板轴压性能研究
Research on Axial Compressive Performance of Lightweight Steel Truss and Lightweight Concrete Composite Wall Panels in Different Thicknesses
摘要
Abstract
In order to investigate the axial compressive performance of lightweight steel truss and lightweight concrete composite wall panels,one lightweight steel truss and two lightweight steel truss and lightweight concrete composite wall panel specimens in full size were designed and tested for axial compressive performance,and the effects of different lightweight concrete thicknesses on the failure modes,load-displacement curves,and axial compressive bearing capacity of the specimens were analyzed.Finite element models were established and numerical simulations were carried out to elucidate the axial compressive damage evolution process of lightweight steel truss and lightweight concrete composite wall panels and reveal the yielding mechanism.The results show that the failure modes of lightweight steel truss and lightweight concrete composite wall panel mainly consist of local deformation and buckling of lightweight steel columns and local compression crushing of lightweight concrete.The peak bearing capacity of 90mm-thick wall panel without facing layer and 150mm-thick wall panel with facing layer is increased by 65.2%and 361.7%respectively compared with that of lightweight steel truss specimen.Under the action of axial compressive load,the lightweight steel skeleton and lightweight concrete work well together,and the lightweight concrete provides vertical bearing capacity for the wall panel while the constraint effect on the lightweight steel keel effectively improves its compressive stability.The numerical simulation results conform to the experimental results well,and the structural configuration of lightweight steel truss and lightweight concrete composite wall panel is optimized through parametric analysis,which can provide reference for engineering design.关键词
轻钢桁架/轻混凝土/组合墙板/轴压试验/数值模拟/参数分析Key words
lightweight steel truss/lightweight concrete/composite wall panel/axial compressive test/numerical simulation/parametric analysis分类
建筑与水利引用本文复制引用
董宏英,李浩东,杨兆源,曹万林,徐涛,沈韦霞..不同厚度轻钢桁架轻混凝土组合墙板轴压性能研究[J].建筑钢结构进展,2025,27(7):44-53,10.基金项目
国家自然科学基金(52378116) （52378116）
