变截面对称刚架的无剪力分配法  

Distribution method without shearing force of variable cross-section single span multilayer rigid frame

作　　者：张学科[1] 胡必武[1] 

机构地区：[1]宁夏大学土木与水利工程学院,宁夏银川750021

出　　处：《农业科学研究》2009年第4期49-51,共3页Journal of Agricultural Sciences

摘　　要：根据无剪力分配法的基本原理,推导出变截面单跨多层对称刚架在任意荷载作用下的一般计算公式,适用于各种变截面对称刚架及等截面刚架的计算.与等截面刚架的计算相比,变截面刚架的计算只需将形常数与载常数按无剪力分配法公式进行简单的修正便可,其他计算与等截面刚架完全相同.From the basic principle of the distribution method without shearing force, the paper deduced the ordinary calculation formula of variable cross-section single span multiplayer symmetrical rigid frame under any imposed load. The formula adapts to the calculation of all kinds of variable cross-section single span multileyer symmetrical rigid feames as well as uniform sections. Compared with the calculation of the uniform section, the calculation of the variable frame only needs to simply revise the deformation constant and load constant according to the formula, other calculations are the same as the uniform section rigid frame.

关 键 词：变截面对称刚架 无剪力分配法 转动刚度 

分 类 号：TB121[理学—工程力学]