型钢混凝土异形柱剪切开裂的试验与计算  

Experimental research and calculation analysis on shear crack loading of steel reinforced concrete special-shaped columns

作　　者：陈宗平[1] 薛建阳[2] 赵鸿铁[2] 

机构地区：[1]广西大学土木建筑工程学院,广西南宁530004 [2]西安建筑科技大学土木工程学院,陕西西安710055

出　　处：《四川建筑科学研究》2010年第1期59-62,共4页Sichuan Building Science

基　　金：国家自然科学基金资助项目(50478044);广西青年科学基金(桂科青0832004);陕西省教育厅自然科学专项计划项目(07jk301);广西大学科研基金(X071042)

摘　　要：对12个小剪跨比的型钢混凝土(SRC)异形柱试件采用"建研式"加载装置进行低周反复荷载试验,得到了型钢混凝土异形柱的剪切开裂荷载值。分析了剪跨比、轴压比、荷载加载方向对型钢混凝土异形柱剪切开裂荷载的影响;并通过编写计算机程序,分析了型钢混凝土异形柱中翼缘对剪切开裂荷载的影响,给出了翼缘对剪切开裂的提高系数表;考虑了配钢的影响,给出了型钢混凝土异形柱的剪切开裂荷载计算公式,计算结果与试验实测结果吻合较好。According to the experimental research on 12 small shear span ratio specimens of steel reinforced concrete （SRC） special-shaped columns under reversed loading; the shear crack loading of the specimens can be obtained. The influence of shear span ratio, axial compress ratio and loading direction on shear crack loading are analyzed. Through compiling the computer program, the influence of the flange of SRC special-shaped columns on the shear crack loading are researched, and the enhance coefficient of flange to the shear crack loading is given. According to the analysis result and considering to the steel shape＇s influence ,the formula of shear crack loading is established. The formula＇s computation results are satisfactory well with the experimental results. All this may be helpful to the designation of SRC special-shaped columns.

关 键 词：型钢混凝土 异形柱 剪切开裂 翼缘影响 

分 类 号：TU398[建筑科学—结构工程]