封闭薄壁截面的抗扭惯矩的计算方法  

The calculation method of torsional moment of inertia with closed thin walled section

作　　者：杨体旭[1] 张敏[1] 龙跃 张向华[1] 杨宝栋[1] 余天文[1] 

机构地区：[1]广西科技大学,广西柳州545006 [2]柳州欧维姆机械股份有限公司,广西柳州545006

出　　处：《四川建材》2012年第6期46-47,共2页Sichuan Building Materials

摘　　要：封闭薄壁截面或箱型截面内抗扭剪应力的分布规律和开口形式不同,不能按照矩形截面或多个矩形组成的开口截面公式计算。为了计算封闭薄壁构件的抗扭惯矩,分别利用剪切应变能等于扭矩作功推导的方法、计算剪力流强度的方法进行了讨论,并举例说明了计算过程。写出了多室闭口截面的计算通式。Because it`s different that the closed thin-walled section or box section in distribution regularities of torsional shearing strength and the forms of openings,closed thin-walled section or box section would not calculate in accordance with formula of rectangular section or composed of multiple rectangular open sections.In order to calculate the torsional rotational inertia of closed thin-walled components,using the method of shear strain energy equal the torque apply work and method of calculating strength of shearflow to discussing that,and illustrates calculation process.Writen out the general calculation formula of multi-oven closed section.

关 键 词：薄壁截面 抗扭惯矩 剪力流强度 

分 类 号：U44[建筑科学—桥梁与隧道工程]