论文部分内容阅读
本文提出一个分析单层饺接排架屋顶侧移及内力的“侧移系数法”.这个方法与文献[3]的“横梁内力系数法”十分相似,但后者是以力法为基础,而本法是以位移法为基础,其优点是:1.以屋顶侧移为基本未知数,对于含有较多等高跨的排架,未知量比横梁内力系数法大大减少,因此无论是形常数计算和排架内力计算都更为简化;2.由于在计算时首先求得了单位力作用下的排架屋顶侧移,这对于需要计算排架自振周期、振型侧移及地震内力的情况特别有利,它提供了计算这些内容所需要的基本数据,减少了大量的准备工作;3.便于考虑排架的空间作用,计算时只需将荷载列阵的各元素乘以相应的空间作用系数即可.
This paper presents a “sideshift coefficient method” that analyzes the lateral displacement and internal forces of single-layer dumpling roofs. This method is very similar to the “internal beam internal force coefficient method” in [3], but the latter is based on the force method. This method is based on the displacement method, and its advantages are: 1. The roof sideshift is basically unknown. For the shelving with more constant height spans, the unknown quantity ratio of the internal beam coefficient method is greatly reduced, so no matter what the shape constant is. Calculations and calculations of the internal forces of the truss are more simplified; 2. The lateral displacement of the truss roof under the action of the unit force is first obtained during the calculation, which is the case for the need to calculate the period of natural vibration of the truss, the lateral displacement of the vibration mode and the internal force of the earthquake. Particularly advantageous, it provides the basic data needed to calculate these contents and reduces a great deal of preparation work. 3. It is easy to consider the space effect of the racking. When calculating, it is only necessary to multiply each element of the load array by the corresponding space activity coefficient. Can.