腹板开洞工字型钢梁的挠度研究  

Deformation Analysis for the I Shape Simply——Supported Steel Beams with Web Openings

作　　者：郭稳娟[1] 周东华[1] 耿璐[1] 

机构地区：[1]昆明理工大学建筑工程学院,昆明650224

出　　处：《科学技术与工程》2010年第28期7074-7077,共4页Science Technology and Engineering

摘　　要：工程中常常会有在工字型钢梁腹板上开洞的情形,腹板开洞会影响钢梁的变形性能。就此问题进行了研究,将腹板开洞钢梁的挠曲变形视为完整的未开洞钢梁的挠曲变形和由于开洞引起的附加挠曲变形的叠加。对洞口处的应力应变进行了分析,得到了腹板开洞钢梁弹性挠曲变形的计算公式;同时,利用有限元分析软件ANSYS建立模型计算出腹板开洞钢梁的挠度,绘制挠度曲线。通过ANSYS进一步验证了计算公式的正确性。Web openings are always used in engineering,it affects the deformation of the I shape simple-supported steel beams.The elastic deformation of the I shape simply-supported steel beams with web openings is composed of the deformation of the integrate beam and the additional deformation of the beam with web openings.The analysis of deformation and stress are conducted,and the calculating formula is derived of the I shape simply-supported steel beams with Web openings;At the same time,ANSYS finite element analysis software is used to found models to calculate the deflection of steel beams with Web openings,drawn the deformation curve.Through ANSYS the correctness of the formula is further verified.

关 键 词：挠度曲线 ANSYS 腹板开洞钢梁 

分 类 号：TU391[建筑科学—结构工程]