高强次轻混凝土梁抗剪性能试验研究  

Experimental Investigation on Shear Capacity of Reinforced High-strength Specified Density Concrete Beams

作　　者：刘沐宇[1] 尹华泉[1] 丁庆军[2] 胡曙光[2] 

机构地区：[1]武汉理工大学湖北省道路桥梁与结构工程重点实验室,武汉430070 [2]武汉理工大学材料科学与工程学院,武汉430070

出　　处：《武汉理工大学学报》2006年第12期85-88,共4页Journal of Wuhan University of Technology

基　　金：国家863项目(2002AA335080)

摘　　要：通过5根高强次轻混凝土有、无腹筋梁和1根高强轻集料混凝土梁、1根普通混凝土简支梁在集中荷载作用下的抗剪性能试验,研究了剪跨比对高强次轻混凝土构件抗剪性能的影响。结果表明,高强次轻混凝土梁比轻集料混凝土梁的抗剪承载力有较大的提高,且比普通混凝土梁的抗剪强度大;与普通混凝土梁一样,其极限抗剪承载力随着剪跨比的增加而降低,并具有相同的破坏形式;剪切破坏时呈脆性破坏。An experimental investigation was conducted to study the capacity of shear-critical reinforced concrete beams of high-strength specified density concrete subjected to concentrated loads. The effect of shear span ratio on shear strength was researched through the tests of 5 high-strength specified density concrete beams with and without web bars, one lightweight con- crete and one normal-weight concrete beam. The tests indicated that the ultimate shear strength of it was a little larger than normal-weight concrete beam＇ s, and larger than lightweight concrete beam. As the same as normal-weight concrete beam, the ultimate shear strength of specified density concrete beams decreased with the increase of the shear-span ratio, and had the same failure mode. The high-strength specified density concrete beams were brittleness when failure.

关 键 词：高强次轻混凝土 抗剪性能 剪跨比 

分 类 号：TU377.1[建筑科学—结构工程]