带腹板开洞钢梁弹性挠度计算  

Elastic deformation of beams with web openings

作　　者：耿璐[1] 周东华[1] 赵慧敏[1] 郭稳娟[1] 

机构地区：[1]昆明理工大学建筑工程学院,云南昆明650224

出　　处：《四川建筑科学研究》2011年第6期14-17,共4页Sichuan Building Science

基　　金：国家自然科学基金项目(50778086);教育部博士点基金项目(20095314110008);建工学院博士基金项目(14078041)

摘　　要：钢梁腹板上开洞,使得洞口区域不再满足平截面假定,梁的挠度曲线也不能再用梁理论求解,针对目前还没有较好的计算H型钢钢梁腹板开洞的弹性挠曲线的方法,本文推导了计算钢梁腹板开洞的计算公式,该法力学模型简洁清晰,计算结果精度也较高,与有限元软件计算的结果吻合性较好。If a web opening exists in a steel beam, the whole section in the range of web opening remains no longer in a plane. In this case the flexural deflection cannot be calculated with elementary theory of beams. Currently there is still not a method available for calculation of deflection beams with web openings. In this paper a calculation method is developed, which is simple and provides a good accuracy of results, which shows a good agreement with those from FE-method.

关 键 词：带腹板开洞钢梁 挠度 次弯矩 抗弯刚度 

分 类 号：TU311.4[建筑科学—结构工程]