冷弯薄壁C型钢组合桁架梁受力性能试验研究  

Experimental Study on Force Performance of Cold-formed Thin-walled C-shaped Steel Composite Truss Beam

作　　者：雷超 张佳琪 韩建强 付秀艳 唐江明 Lei Chao;ZHANG Jia-qi;Han Jian-qiang;Fu Xiu-yan;TANG Jiang-ming(College of Civil and Architectural Engineering,North China University of Science and Technology,Tangshan Hebei 063210,China;Earthquake Engineering Research Center of Hebei Province,Tangshan Hebei 063210,China;Handan Construction Engineering Group Co.,Ltd,Handan Hebei 056001,China)

机构地区：[1]华北理工大学建筑工程学院,河北唐山063210 [2]河北省地震工程研究中心,河北唐山063210 [3]邯郸建工集团有限公司,河北邯郸056001

出　　处：《华北理工大学学报（自然科学版）》2024年第1期97-102,共6页Journal of North China University of Science and Technology：Natural Science Edition

基　　金：国家自然科学基金面上项目(51678237);河北省自然科学基金面上项目(51678237);河北省自然科学基金面上项目(E20212091217);河北省优秀专家出国培训项目(201691);河北省教育厅科技重点项目(ZD2020139)。

摘　　要：随着我国绿色建筑发展的不断推进,轻钢结构开始展露头角。冷弯薄壁型钢作为新型建筑材料,在轻钢建筑中仍有较大的发展空间,因此对冷弯薄壁型钢的受力性能进行分析具有一定程度的工程价值。首先开展C型钢组合桁架梁承载力和变形实验,在此基础之上利用ABAQUS建立C型钢组合桁架梁有限元模型,分析有无缀板、自攻螺钉等因素对于组合桁架梁承载力的影响。本文的实验结果表明裸露的骨架梁由于自攻螺钉的剪切而损坏,最终的承载能力取决于螺钉的抗剪能力;缀板的加固对提高梁的承载能力有着显著的影响。With the continuous promotion of green building development in China,light steel structures are beginning to show their prominence.As a new type of building material,cold-formed thin-walled steel sections still have a large space for development in light steel construction,so the analysis of the force performance of cold-formed thin-walled steel sections has a great engineering value.Experiments on the load carrying capacity and deformation of C-section steel joist beams was carried out,and then a finite element model of C-section steel joist beams using ABAQUS was established,and the influence of factors such as the presence or absence of the splice plate and self-tapping screws on the load carrying capacity of the joist beams was analyzed.The experimental results show that the exposed skeleton beam is damaged by the shear of the self-tapping screws and the final load carrying capacity depends on the shear capacity of the screws.The reinforcement of the splice plate has a significant effect on improving the load carrying capacity of the beam.

关 键 词：冷弯薄壁型钢 组合桁架梁 承载力 缀板 自攻螺钉 

分 类 号：TU392.5[建筑科学—结构工程]