高强轻集料钢筋混凝土梁抗剪承载力计算  

Calculation of the shear resistance of the reinforced high-strength lightweight 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]武汉理工大学道路桥梁与结构工程湖北省重点实验室,湖北武汉430070 [2]武汉理工大学材料科学与工程学院,湖北武汉430070

出　　处：《华中科技大学学报（自然科学版）》2008年第3期46-49,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家高技术研究发展计划资助项目(2002AA335080)

摘　　要：为研究高强轻集料钢筋混凝土梁的抗剪性能,对8根高强轻集料钢筋混凝土有腹筋梁进行了抗剪试验,分析了混凝土强度、剪跨比和配箍率对集中荷载作用下高强轻集料混凝土梁抗剪承载力的影响,确定了抗剪承载力计算中的各影响参数,对基于原有规程JGJ12-99的计算公式进行了优化,并指出了其适用范围.结果表明:该计算方法较全面地考虑了各参数的影响,能合理地反映高强轻集料钢筋混凝土梁的抗剪能力.The experiments were made on eight reinforced high-strength lightweight concrete beams with stirrup in order to research the shear capacity of reinforced high-strength lightweight concrete beams. The effects of concrete strength, shear-span ratio and stirrup ratio on the shear resistance of beams subjected to concentrated loads were investigated and the different parameters were confirmed by using test data from foreign and Chinese scholars. A formula to calculate the shear resistance was optimized according to the old code JGJ12-99. The condition of upper and lower limit for using the formula was given. The result shows that the new formla can describe the shear capacity of reinforced high-strength lightweight concrete beams very well because it has considered the influence of different parameters.

关 键 词：钢筋混凝土 高强轻集料 抗剪承载力 抗剪强度 上下限值 

分 类 号：TU377.1[建筑科学—结构工程]