混凝土翼板开洞钢-混凝土组合梁的试验研究及刚度分析  

Experimental study and rigidity analysis on composite steel-concrete beams with openings in concrete flange

作　　者：聂建国[1] 吴洪[1] 周建军[2] 樊健生[1] 

机构地区：[1]清华大学,北京100084 [2]华北电力设计院,北京100011

出　　处：《土木工程学报》2006年第2期31-35,共5页China Civil Engineering Journal

基　　金：国家杰出青年科学基金资助项目(50025822)

摘　　要：对9根混凝土翼板开洞的钢-混凝土组合梁进行了试验研究,试件变化的参数主要为洞口的大小及位置。试验表明,根据不同的荷载工况和洞口位置,翼板开洞组合梁有两种不同的破坏形式。针对不同的洞口特征参数,对多种荷载工况下组合梁的刚度进行了研究,得到了考虑滑移效应的混凝土翼板开洞钢-混凝土组合梁的刚度计算公式,计算结果与实测值吻合良好,该方法可供设计参考。Nine tests of composite steel-concrete beams with openings in concrete flange were reported in this paper. The main parameters considered were the size and position of the openings. Two modes of failure were observed in the tests, depending on the loading arrangement and the position of the openings. The rigidity of the composite beams were also investigated for different parameters of openings and the loading cases. The equivalent rigidity of composite beams taking account of the opening in concrete flange and slip effects was derived. The predicted deflections agree well with the test results, and the formula can be used in design practice.

关 键 词：钢-混凝土组合梁 混凝土翼板开洞 试验研究 刚度 

分 类 号：TU318.1[建筑科学—结构工程]