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本文主要内容包括:(1)扼要总结关于上理式涵管土压力理论,并提出马斯顿的修正公式;(2)简要总结关于土坝、土堤在横断面上的拱作用及其所引起应力分布的研究成果,本文着重探讨断面由内外部填土构成的土坝,提出这种土坝下竖向压应力分布的理论计算方法,这种压力分布当计算土坝下涵管土压力时,应予以考虑;(3)根据前二部分的探讨结果并结合某工程的具体情况,提出该工程土坝下涵管竖向压力的计算。
The main contents of this paper include: (1) Summary of the theory of earth pressure on culverts and the proposed correction formula of Marston; (2) Summary of the arch effects on earth dams and earth banks in cross-section and their causes For the research results of stress distribution, this paper focuses on the discussion of earth dams with sections consisting of internal and external backfills, and proposes a theoretical calculation method for the vertical vertical compressive stress distribution of such earth dams. When this pressure distribution is calculated, the earth pressure under the earth dam is reduced. Should be considered; (3) Based on the results of the previous two parts and combined with the specific conditions of a project, the vertical pressure of the culvert under the project is calculated.