基于载荷-位移曲线的钢结构建筑抗倒塌性能研究  

Study on collapse resistance of steel structures based on load-displacement curve

作　　者：马亚利 王军 MA Yali;WANG Jun(Sifang College,Shijiazhuang Tiedao University,Shijiazhuang 051133 China;School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China)

机构地区：[1]石家庄铁道大学四方学院,河北石家庄051133 [2]石家庄铁道大学土木工程学院,河北石家庄050043

出　　处：《兵器材料科学与工程》2025年第2期65-70,共6页Ordnance Material Science and Engineering

基　　金：河北省自然科学基金(E20192102015)。

摘　　要：为提高钢结构建筑的安全性,设计了双梁钢结构和单梁钢结构试件,分别对其施加循环载荷,检测钢结构在梁、柱、核心区域的变形,计算出钢结构建筑的整体位移,在双梁和单梁上分别选2个测试点,绘制各个测试点的载荷-位移曲线,并从刚度退化、极限载荷和塑性变形3个维度研究钢结构建筑的抗倒塌性能。结果表明:双梁结构在较高柱顶水平载荷范围内,只存在少量延性变形,且随位移增加结构刚度退化明显,但无明显变形;双梁结构的承载力与延性显著高于单梁结构,钢结构建筑可以考虑以双梁结构为主。In order to improve the safety of steel structure buildings,specimens of double⁃beam steel structure and single⁃beam steel structure were designed,cyclic loads were applied to them respectively,the deformation of steel structure in beam,column and core area was detected,and the overall displacement of steel structure buildings was calculated.Two test points were selected on double beam and single beam respectively,and load⁃displacement curves of each test point were drawn.The collapse resistance of different steel structures were analyzed from the three dimensions of stiffness degradation,ultimate load and plastic deformation.The results show that the double⁃beam structure only has a small amount of ductile deformation in the range of higher column top horizontal load,and the stiffness of the structure degenerates obviously with the increase of displacement,but no obvious deformation occurs.The bearing capacity and ductility of double beam structure are significantly higher than that of single beam structure,so double beam structure can be considered as the main structure of steel structure.

关 键 词：载荷-位移曲线 钢结构 抗倒塌 双梁结构 破坏指数 承载力 

分 类 号：TU391[建筑科学—结构工程]