带边梁的边悬臂梁的扭矩简化计算  

Simplified calculation of torque of cantilever beam with side beam

作　　者：李远[1,2] 吕伟荣[1] 胡益民[1] 

机构地区：[1]湖南科技大学土木工程学院,湖南湘潭411201 [2]驻马店市建筑勘察设计院,河南驻马店463000

出　　处：《湖南科技大学学报（自然科学版）》2013年第4期60-63,共4页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金：湖南省教育厅优秀青年项目(10B035)

摘　　要：实际工程设计中,带边梁的边悬臂梁在作为重要承重构件时,往往忽略了边梁对边悬臂梁产生的约束力矩,从而使得该边悬臂梁偏于不安全.从约束力矩理论出发,采用正对称结构形式,提出了边梁对边悬臂梁产生的约束力矩的简化计算公式,并通过算例验证了该方法的正确性.通过调整边梁与悬臂梁抗扭线刚度的比值,相应约束力矩的计算结果表明,随着Φ值的增大,约束力矩减小.因此,建议在设计中应尽量增大边梁的截面,以减小悬臂梁的扭矩.In practical engineering, the cantilever beam with side beams, which is taken as an important bearing component, but constraints torque of side beams, is often neglected, tends to unsafety. Through the theory of constraining moment and symmetric structure in symmetrical loading, the simplified calculation formula of the constraints torque was proposed, at the same time its validity and rationality was proved by examples so that it could be used in the actual engineering design. Through changing the ratio of linear stiffness beween side beam and cantilever beam, the calculation results indicated that the value decreased along with the parameter Ф increasing. So, the designer should be increase the size of side beam section as much as possible for decreasing the value of constraints torque.

关 键 词：扭矩 正对称结构 边梁 悬臂梁 

分 类 号：TU227[建筑科学—建筑设计及理论] TU375