关于位移法解超静定结构利用对称性的几点说明

SOME EXPLANATION ON USING SYMMETRY FOR DISPLACEMENT METHOD IN SOLVING STATICALLY INDETERMINATE STRUCTURE

本文论述位移法解超静定结构利用对称性的有关问题,对于对称性的含义与应用,按照变形条件确定简化结构的支座条件与类型,考虑对称性的简化效果以及正确使用转角位移方程方面应注意的问题,都做了认真阐述。通过例题说明位移法解超静定结构利用对称性的简化效果,并且用力矩分配法校核例题计算结果的正确性。

The concerned problems on using symmetry for displacement method to solving statically indetirminate structure are discussed in this paper. Attention is paid to and serious exposition is made on these problems: the meaning and application of symmetry ;the determination of supporting conditions and types of simplified structure in the light of given deformation conditions;the result on using symmetry in simplifi cation; and the accurate application of slope-deflection dauation equation,etc. Through practical examples,the result on using symmetry for displacement method in solving statically indeterminate strusture is clearly illustrated. And the correctness of calculation result of the exampe is checked with the monent distribution method.