集中荷载作用下高强混凝土有腹筋约束梁抗剪强度试验研究  

Research on Shear Strength of Reinforced High-Strength Concrete Restrained Beams with Stirrups under Concentrated Loading

作　　者：翟阳[1] 赵光仪[2] 吴佩刚[2] 

机构地区：[1]烟台大学 [2]清华大学

出　　处：《烟台大学学报（自然科学与工程版）》1991年第1期74-80,86,共8页Journal of Yantai University(Natural Science and Engineering Edition)

基　　金：国家自然科学基金和城乡建设科技发展基金联合资助项目

摘　　要：本文在12根集中荷载作用下高强混凝土有腹筋约束梁试验的基础上,分析了集中荷载作用下高强混凝土有腹筋约束梁的斜向开裂特点、破坏形态和抗剪性能、研究了剪跨比和含箍特征值对抗剪强度的影响. 依据试验结果,比较了几个有关抗剪强度公式对集中荷载作用下高强混凝土有腹筋约束梁抗剪强度计算的适用性.通过对试验数据的回归分析,提出了集中荷载作用下高强混凝土有腹筋约束梁抗剪强度计算建议公式及其适用范围。In this paper, results of an experimental investigation of twelve reinforced high-strength concrete restrained beams with stirrups under concentrated loading were summerized. Based on the tests,diagonal cracking, failing forms and shear behaviours of the beams were analysed. Besides, the effects of shear span ratio and characteristic values of stirraps content were studied.The test results were compared with the shear strength predicted by using several different rmulas, and the accuracy of above formulas were discussed. By means of regression analysis, a rmula and the limits corresponding to the formula were presented. It was verified that the for-ula could predict the shear strength more accurately than others.

关 键 词：混凝土 约束梁 抗剪强度 腹筋 

分 类 号：TU375.1[建筑科学—结构工程]