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在国民经济的各个工业部门,广泛地采用架空管道运输各种能量和物料。分析了许多工业管道支架的设计表明,支架的跨越结构(梁和桁架)所消耗的钢材可达到全部支架结构物总用钢量的70～80％,而这些钢材的大部分(80～90％)均用来支承管道传来的垂直荷载。因此,降低跨越结构垂直荷载的计算内力,就可以降低其钢材用量。通常,管道支架结构物的管道和跨越结构是分开进行计算的。第一步,先将管道视为弹性支座上的连续梁,连续梁的支座就是管道下面的横梁;第二步,设计跨越结构的单跨梁或桁架(图1a、b)。实际上,由于管道本身具有一定的抗弯刚度,经由横梁传到跨越结构上的荷载将大大低于将管道
In various industrial sectors of the national economy, extensive use of overhead pipe transportation of various energy and materials. The analysis of the design of many industrial pipe supports shows that the steel consumed by the spanned structure of the brackets (beams and trusses) can reach 70-80% of the total amount of steel used in the entire scaffold structure, and the majority of these steel materials (80-90% ) Are used to support the pipeline from the vertical load. Therefore, to reduce the calculation of internal forces across the vertical load of the structure, it can reduce the amount of steel. In general, piping and spanning structures of pipe support structures are calculated separately. In the first step, the pipe is considered as a continuous beam on an elastic support. The support of a continuous beam is the beam below the pipe. The second step is to design a single span or truss across the structure (Figure 1a, b). In fact, due to the pipe itself has a certain bending stiffness, the load reached across the structure through the beam will be significantly lower than the pipe