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管道是自来水、电力、燃气等生活必需品的重要输送工具,将管道埋置在地下合理的深度不仅可以提高管道使用过程中的安全性,还可以达到节约地上空间的目的。随着国民经济的发展,新型材料、大直径、薄壁、长距离的地埋管线结构相继出现,对地埋管道安全埋深计算理论和方法提出了迫切要求。从土的本构模型、地埋管道垂直土压力计算、管土相互作用、埋管外载、土体类型以及数值模拟六个角度综述了地埋管道安全埋深的研究进展,得出前人研究管道安全埋深问题的思路和方法,同时针对存在的问题进行分析,最后对其未来的发展进行了展望,以期为后续管道安全埋深研究提供科学、新颖、合理的意见和建议。
Piping is an important transportation tool for tap water, electricity, gas and other necessities. The reasonable depth of the pipeline buried in the ground can not only improve the safety during the pipeline use, but also save the space on the ground. With the development of the national economy, new materials, large diameter, thin-walled and long-distance buried pipeline structures have appeared one after another, putting forward urgent requirements on the theory and method of calculating the buried depth of buried pipelines. This paper summarizes the research progress of the buried depth of buried pipelines from the constitutive model of soil, the calculation of vertical earth pressure of buried pipelines, the interaction between pipe and soil, the loading of buried pipelines, the type of soil and the numerical simulation. Pipeline safety depth of the problem ideas and methods, at the same time for the analysis of existing problems, and finally prospects for its future development, with a view to follow-up study of pipeline depth to provide scientific, innovative and reasonable advice and suggestions.