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本文為著者前文“剛構常數與剛構分析”之補充,其目的在將角變傳播法及不均衡力矩傳播法加以改善,以便實用。此二法均只需一個公式以計算剛構中所有各桿端之基本剛構常數(即任何二相鄰結點间之角變傳播係數),將此項公式與柯勞塞克之公式相比較,藉以指出前者較後者為便於應用,並亦可用之以直接分析較簡單之閉合式剛構,此外補充說明此法中之剛構常數與定點法之關係,剛構有側移時計算各結點角變所需之各項公式亦行求出。不均衡力矩傳播法係顧翼鹰同志最近研究所得者,既係直接以桿端力矩為計算之對象,而且只須採用不均衡力矩分配比將各結點作用於各桿端不均衡力矩之總和,一次分配,即得所求各桿端分配力矩之總值,實係力矩一次分配法之一大改進,著者將顧氏之法加以推廣与改善,使其原則簡明而計算便捷,著者認為此法係將林、柯、孟三氏法之所有優點熔冶於一爐,實可稱為现下最優之力矩一次分配法。最後列舉算例,以說明此二法在實際工作中之應用。
This article is supplemented by the author’s previous article “Analysis of Rigid-Structural Constants and Rigid-Structures”. Its purpose is to improve the angle-change propagation method and the unbalanced torque propagation method so as to be practical. Both of these two methods require only one formula to calculate the basic rigid-constant constants of all rod ends in a rigid frame (ie, the angular propagation coefficients between any two adjacent nodes). This formula is compared with the Clausoth’s formula. In order to point out that the former is more convenient than the latter, it can also be used to directly analyze the simple closed-frame rigid structure. In addition, the relationship between the rigid-constant constant and the fixed-point method in this method is supplemented. When the rigid structure is laterally translated, each knot is calculated. The formulas required for changing the angle are also found. The unbalanced torque propagation method was recently studied by Comrade Gu, who was the subject of direct calculation of rod-end moments, and used only unbalanced moment-distribution ratios to apply each node to the sum of unbalanced moments at each rod end. One assignment, that is, the total value of the rod-end distribution torque required, is a major improvement of the one-time torque distribution method. The author promotes and improves Gu’s method to make it simple and easy to calculate. The author thinks this is convenient. The law system melts all the advantages of Lin, Ke, and Meng San’s method into one furnace. It can be called the optimal one-time torque distribution method. Finally, examples are given to illustrate the application of this method in practical work.