500MPa细晶粒箍筋混凝土梁抗剪试验研究  

Experimental study on shear of reinforced concrete beam with 500 MPa hot rolled bars of fine grains as stirrups

作　　者：马恒蕾[1] 王命平[1] 耿树江[2] 杨勇新[2] 

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033 [2]中冶集团建筑研究总院,北京100088

出　　处：《四川建筑科学研究》2011年第5期22-25,共4页Sichuan Building Science

基　　金：国家863计划资助项目(2007AA03Z550)

摘　　要：为了研究500 MPa细晶粒箍筋混凝土梁的受剪性能,对16根配置500 MPa细晶粒箍筋、1根400 MPa及1根600 MPa箍筋的混凝土梁进行了在集中荷载作用下的受剪试验,分析了采用500 MPa细晶粒箍筋混凝土梁的斜截面受剪承载力及使用阶段的裂缝宽度,观测了混凝土强度等级、剪跨比、箍筋强度、配箍率、截面尺寸、截面形状等条件不同时试件的裂缝、挠度、承载力及破坏形态;并将实测值与有关公式的计算值进行了比较。试验结果表明,构件的斜截面承载力仍可按现行《混凝土结构设计规范》的相关公式进行计算,并有足够的安全储备。To investigate the shear behavior of reinforced concrete beam with 500 MPa hot rolled bars of fine grains,a test with the shear experiments of 16 simply supported beams with 500 MPa hot rolled bars of fine grains as stirrup,1 simply supported beam with 400 MPa and 1 simply supported beam with 600 MPa as stirrups,the shear-bearing capacity and crack width at service loads were analyzed,they were observed that the crack,deflection,bearing capacity and failure mode when the strength grade of concrete,shear span ratio,stirrup strength,stirrup ratio,sectional dimensions,cross-sectional shape,such as conditions are not at the same time,some comparisons are made between test results and calculated values.The test results show that the formula in code for design of concrete structures can be used to calculate its shear capacity,which have enough safety.

关 键 词：500MPa细晶粒钢筋 受剪试验 斜裂缝 抗剪承载力 破坏形态 

分 类 号：TU375.1[建筑科学—结构工程]