高强箍筋混凝土梁斜裂缝宽度试验研究  

Experimental investigation of widths of diagonal crack in concrete beams with high-strength stirrup

作　　者：李艳艳[1] 戎贤[1] 乔金丽[1] 皮凤梅[2] 

机构地区：[1]河北工业大学土木工程学院,天津300130 [2]廊坊师范学院建筑工程学院,廊坊065000

出　　处：《兰州理工大学学报》2009年第4期124-128,共5页Journal of Lanzhou University of Technology

基　　金：河北省自然科学基金(E2007000064)

摘　　要：对20根配有500 MPa钢筋作为抗剪箍筋的混凝土梁进行试验,分析加载方式、混凝土强度、截面形式以及配箍率对混凝土梁斜裂缝宽度的影响.在试验的基础上,建立合理的计算模型,推导钢筋混凝土梁斜裂缝宽度的计算公式.研究结果表明,采用建议的计算公式可以定量计算钢筋混凝土梁受剪斜裂缝宽度,计算结果满足工程应用精度要求.Experimental investigation of 20 concrete beams with 500 MPa steel bars as stirrups was performed.The effect of loading form,concrete strength,section shape and stirrup ratio on diagonal crack width was analyzed.Based on reasonable computation models and experimental results,a formula for calculation of diagonal crack width of reinforced concrete beams was derived.From the test results it could be seen that the diagonal crack width could quantitatively be estimated with the suggested formula and the computation result met the requirement of accuracy for engineering application.

关 键 词：高强箍筋 混凝土梁 使用阶段 斜裂缝宽度 

分 类 号：TU375.1[建筑科学—结构工程]