高强箍筋混凝土简支梁受剪性能试验研究  

Experiment Study on the Shear Behavior of Simple Supported Reinforced Concrete Beams with High-strength Stirrups

作　　者：虞琼芳[1] 陈长冰[2] 花长城 YU Qiongfang;CHEN Changbing;HUA Changcheng(Anhui Audit Vocational College,Heifei 230601,China;Hefei University,Heifei 230000,China;Tus Design Group Co,Ltd Heifei 230000,China)

机构地区：[1]安徽审计职业学院工程管理系,合肥230601 [2]合肥学院城市建设与交通学院,合肥230000 [3]安徽合易建筑科技有限公司,合肥230000

出　　处：《安阳工学院学报》2022年第4期94-99,共6页Journal of Anyang Institute of Technology

基　　金：2020年度安徽高校人文社会科学研究项目“数字文化背景下房地产企业转型研究”(SK2020A0893)。

摘　　要：为研究配置500 MPa箍筋的钢筋混凝土梁在集中荷载作用下的受剪力学性能,设计完成了6根混凝土简支梁试件单调加载试验,分析配置高强箍筋的混凝土梁斜截面受剪承载力和其在正常使用阶段的斜裂缝宽度,并对比中美欧规范在预测配置高强箍筋的钢筋混凝土梁受剪承载力时的预测精度和稳定性,进而探讨配箍率及混凝土强度对受剪承载力的影响规律。实验结果表明,配置高强箍筋的钢筋混凝土梁其受力特征及破坏形态与普通梁类似,其斜截面受剪承载力可以按照我国《混凝土结构设计规范》(GB 50010-2010)进行设计计算,且能满足正常使用阶段的裂缝宽度要求,梁构件的受剪承载力随着配箍率和混凝土强度的增加逐渐提高,但当混凝土强度超过一定值后,其对受剪承载力的贡献作用不再显著。In order to study the shear behavior of reinforced concrete beams with 500 MPA stirrups under concentrated load, the monotonic loading tests of six simply supported concrete beams were carried out, the shear capacity of inclined section of concrete beams with high-strength stirrups and the width of inclined cracks during normal use are analyzed, the prediction accuracy and stability of shear capacity of reinforced concrete beams with high-strength stirrups are compared with those of Chinese, American and European codes, and the influence of stirrups and concrete strength on shear capacity is discussed. The experimental results show that the behavior of reinforced concrete beams with high-strength stirrups is similar to that of ordinary beams, and the shear capacity of the inclined section can be calculated according to the code for design of concrete structures GB 50010-2010, the shear capacity of the beam increases with the increase of stirrup ratio and concrete strength, but when the concrete strength exceeds a certain value, its contribution to the shear capacity is no longer significant.

关 键 词：钢筋混凝土梁 高强箍筋 受剪承载力 裂缝宽度 试验实测值 混凝土强度 配箍率 

分 类 号：TU375.4[建筑科学—结构工程]