斜交结构的力矩分配法

Moment Distribution Method on Skew Structures

本文首先提出采用力矩分配法分析斜交结构,导出了相应的计算公式,为分析现代工程中常用的斜支承连续梁、斜交刚架等斜交结构提供了一种有效的手算方法。随后,文中还给出了两个算例,并就斜角对斜支承连续梁内力、反力和变形的影响作了初步探讨,加深了对斜支承连续梁受力性能的认识。实践表明,本文提出的斜交结构的力矩分配法具有概念明确、方法简便、易于手算等特点,其基本原理和计算过程与一般工程技术人员所熟知的正交结构的弯矩分配法相同,故易为广大工程技术人员所接受。

In this paper,the moment distribution method is proposed first for the analysis of skew structures, and the corresponding formulas are developed. The method, used to analyse tne skew continuous beam bridges and the skew frames and so on, is similar to the bending-moment distribution method to the right-angle structures, so this is a simple and convenient method which has the characteristic of the clearcut concept. Finally, two examples are given, and the influence of skew angles on internal forces, reactions and displacements are discussed.