型钢混凝土T形柱剪切开裂的试验与计算  

Experimental Research and Calculation Analysis on Shear Crack Load of Steel Reinforced Concrete T-Shaped Columns

作　　者：张向冈[1] 陈宗平[1] 杨贻斌[1] 苏益声[1] 

机构地区：[1]广西大学土木建筑工程学院,南宁530004

出　　处：《建筑科学》2012年第1期29-32,共4页Building Science

基　　金：国家自然科学基金(50908057);广西科学基金(桂科青0832004)

摘　　要：对八个设计的型钢混凝土T形柱试件进行静力单调抗剪加载试验,得到了剪切开裂荷载试验值。分析了剪跨比、轴压比、配箍率等参数对剪切开裂荷载的影响,引入了型钢、翼缘对剪切开裂荷载的提高系数α、θ,给出了型钢混凝土T形柱剪切开裂荷载的计算公式。结果表明:在一定范围内,剪切开裂荷载随剪跨比的增大而变小,随轴压比的增大而变大;随着配箍率的增大,试件的剪切开裂荷载变大;由计算公式所得剪切开裂荷载与试验值吻合较好。Based on the experiment of 8 steel reinforced concrete T-shaped columns specimens under monotonic static shear load,test values of shear crack load were obtained.Influence on the shear crack load of the shear span ratio,axial compression ratio and stirrup ratio was analyzed,the added coefficients θ of flange and α of steel were introduced.The calculation formula for the shear cracking load was given.It is shown that the shear cracking load decreases with the shear span ratio increase and increases with the axial compression ratio increase within a certain range,the shear cracking load increases with the stirrup ratio increase,the calculated value of the shear cracking load is in good agreement with the experimental data.

关 键 词：型钢混凝土 T形柱 剪切开裂 提高系数 

分 类 号：TU398[建筑科学—结构工程] TU312