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本文所述为直接求有侧移刚架各杆端挠矩的一次分配法。按照此法,由于荷载与由于侧移所生的端矩,不必分开计算然后叠加。在算得各杆端修正刚构常数后,就可以用文中所建议的公式,从已知的由于荷载所生的定端力知求得各侧移值,并进而算得侧移所生的定端力矩。继在各个杆端将荷载所生的定端力矩与侧移所生的定端力矩叠加,而得各该杆端的总的定端力短。将这些总的定端力矩用不均衡力矩传播法,按无侧移刚架的分析解算一次,结果即为所欲求的实际杆端挠矩。此法可用于分析具有一个或一个以上侧移的刚架。文中除叙述算法与导算某些新公式外,尚列举例题三则,以示本法之应用。
This article describes a one-time distribution method for directly determining the bending moments of the rod ends of the rigid frame. According to this method, because of the load and the moment due to side shift, it is not necessary to calculate separately and then superimpose. After calculating the rigid-frame constant of each rod end, we can use the formula proposed in the paper to determine the lateral shift value from the known fixed-end force due to the load, and then calculate the resulting fixed-end displacement. Torque. Following the superposition of the fixed moment generated by the load at each rod end and the fixed moment generated by the side shift, the total fixed end force of each rod end is short. These total fixed moments are solved once by the unbalanced moment propagation method with the analysis of the non-shifting rigid frame. The result is the desired rod end bending moment. This method can be used to analyze a rigid frame with one or more sides. In addition to the narrative algorithm and the calculation of some new formulas, three examples are listed to illustrate the application of this method.