支座处埋地管道的地震应力分析

在地震波作用下，埋地管道因地震波的剪切作用而产生弯曲应力，而支座处弯曲应力远高于远离支座处直管段的弯曲应力，需要在埋地管道的抗震设计中予以考虑。采用梁结构分析方法对各种支座处的管道弯曲应力进行了分析，即将埋地管道地成是带 有边界约束的弹性基础上的连续梁，忽略地下管道及其内输送介质的惯性作用，应用结构分析方法分析各种支座处的管道应力。给出了算例和几类特殊支座附近的管中应力的分析结果。

Anti-Seismic Analysis of Buried Pipelines Under the Various Kinds of Supports

The buried pipeline produces bending stresses due to the shear of seismic wave. Those stresses need to be considered in the anti-seismic design because the stresses near the support are much larger than those of the straight pipe. The buried pipeline is taken as a beam based on the elastic foundation,and the intertia of buried pipeline and media inside it are neglected. The method of structural analysis is used in the various kinds of supports. The examples and the results about some special supports are given in the paper.