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鉄路工程中,連續梁的运用是很广泛的。目前,关于連續梁的計算方法有很多,比較經典的如三弯矩方程式、弯矩定点法……等。这些方法均能得到精确的結果,但計算工作量并不輕。俞忽教授在弯矩分配法的基础上提出的集体分配法,对于四跨以下的迆續梁,能很快的求得精确解,但对于四跨以上的連續梁,则只能得到近似的解答。本文将集体分配法加以推广,使其对于任意跨在靜載和行載下之迆鑪梁,均能很快得到精确的解答。 (一)方法的提出用集体分配法求連續梁的精确解,是在这样一个分配单位上进行的,如图1,它具有如下的特点;其上具有一个主要节点。在此二邻可以有弹性节点1、2。汇交于弹性节点的杆件除传递杆件外,其余杆件之他端均为絕对固定或鉸支。
The use of continuous beams in the Shulu project is very extensive. At present, there are many methods for calculating the continuous beam, such as the classic three-moment equation, the bending moment fixed-point method, and so on. These methods can get accurate results, but the calculation workload is not light. The collective distribution method proposed by Prof. Yu Hu on the basis of the method of moment distribution can quickly obtain accurate solutions for the continuous beam below four spans. However, for a continuous beam with more than four spans, it can only be approximated. answer. In this paper, the collective distribution method is promoted so that it can quickly and accurately answer any squat furnace beam that is straddling the static and horizontal loads. (I) Proposal of method The exact solution of the continuous beam using the collective distribution method is performed on such an allocation unit. As shown in Fig. 1, it has the following features; it has a main node. In this two neighbors, there can be elastic nodes 1 and 2. In addition to the transmission rods, the rods that are delivered to the elastic nodes are absolutely fixed or hinged at the other ends of the rods.