楔形工字梁抗剪极限承载力试验研究  

EXPERIMENTAL STUDY ON SHEAR CAPACITY OF I-BEAMS WITH TAPERED WEBS

作　　者：郑悦[1] 童根树[2] 金阳[2] 

机构地区：[1]浙江大学城市学院土木系,杭州310015 [2]浙江大学建筑工程学院,杭州310058

出　　处：《工程力学》2012年第8期269-275,共7页Engineering Mechanics

基　　金：浙江省城乡建设厅项目(ZC201139)

摘　　要：该文介绍了楔形变截面工字钢短梁的抗剪承载力试验,与有限元结果进行了对比,提出了将楔形变截面梁的承载力按等截面梁的承载力乘以楔率折减系数的计算方法,与试验和扩充的有限元计算结果对比表明:公式有很好的精度。The paper reported an experimental study on the post-buckling shear strength of I-sectional beams with tapered webs. The comparison with FEM （Finite Element Method） analysis is carried out and reasonable agreement between the test and the FEA （Finite Element Analysis） is observed. A design formula is proposed that the post-buckling shear strength is determined by multiplying the counterpart of the uniform beam by a taper reduction factor. The comparison with test and expanded FEM analysis shows an excellent effectiveness of the proposed formula.

关 键 词：剪切屈曲:屈曲后强度 变截面梁 抗剪承载力 有限元 

分 类 号：TU392.1[建筑科学—结构工程]