【摘要】 大地震震害经验表明，场地的不均匀沉陷是导致埋地管线破坏的重要原因之一。提出一个适用的管道破坏判别方法十分重要。本文提出了一个新的方法，用以分析受沉陷作用的埋地管道的反应。该方法改变了沉陷区和非沉陷区都用弹性地基梁的分析途径，在沉陷区考虑了管道几何大变形，克服了现有方法仅适用于无限远处发生最大沉陷的缺陷，适用于任何沉陷参数的情况。新方法可以计算出沉陷区管道各点的位移和截面内力，考虑到管道截面在轴力和弯矩分别或同时作用条件下的塑性极限状态，建立了管道的破坏准则。文中通过算例给出了一些规律性的认识。更多还原

【Abstract】 This paper offers a new method which deals with the response analysis of buried pipelines subjected to ground settlement. The method takes the geometrical large deformation of the pipelines into account, while the existing method is only suited to solve maximum settlement happening to the infinite far zone. This method can calculate displacement and sectictn internal force of the pipeline through settlement zone. This paper has also suggested a new judgement eriterion of pipeline damage, considering the pipeline’s plastic limit state. And the criterion has been tested by some examples. Some useful conclusions are drawn,更多还原