摘要
为了研究冷弯薄壁型钢组合楼盖抗剪性能,进行了1个冷弯薄壁C型钢一压型钢板混凝土组合楼盖、3个冷弯薄壁C型钢桁架一压型钢板混凝土组合楼盖和1个冷弯薄壁C型钢桁架一ALC板组合楼盖试件的抗剪性能试验。详细考察了组合楼盖在低周反复荷载作用下的应变分布规律和破坏形式,分析了组合楼盖的滞回曲线、骨架曲线、荷载强度退化、刚度退化。试验研究表明:采用冷弯薄壁C型钢梁组合楼盖的抗剪极限承载力要高于采用冷弯薄壁C型钢桁架梁组合楼盖;抗剪件在一定程度上可以提高组合楼盖的抗剪承载力。
In order to investigate the shear performance of cold-formed thin-walled steel composite floor,in this paper,the shear performance of one specimen of cold-formed thin-walled C steel beam-profiled steel sheetconcrete composite floors(CFTS-PSC),three specimens of cold-formed thiwalled C steel truss-profiled steel sheet composite floor(CFTST-PSC1、CFTST-PSC2、CFTST-PSC3)and one specimen of cold-formed thinwalled C steel truss-ALC composite floor(CFTST-ALC)were tested,and the failure modes and strain distributing patterns of composite floors under low cycle repeated loading were studied.The hysteresis curve,skeleton curve,load strength degradation and stiffness degradation of the composite floors were analyzed.Experimental study shows that the ultimate shear capacity of a composite floor with cold-formed thin-walled C steel beams is higher than that of a composite floor with a cold-formed thin-wall C steel truss.The shear strength of the composite floor with shear connectors can be improved to a certain extent.
作者
高启杰
肖亚明
郭振全
GAO Qijie;XIAO Yaming;GUO Zhenquan(School of Civil Engineering,Hefei University of Technology,Hefei 230009,China)
出处
《结构工程师》
北大核心
2019年第6期154-163,共10页
Structural Engineers
基金
国家自然科学基金(51478158)
教育部新世纪人才支持计划(NCET-12Q838)。
