大型沟埋式蛋型管道土压力的非线性有限元分析

The Analysis of the Soil Pressure of Large Egg-Shapped Ditch Conduit by Finite Element

以弹塑性理论为基础，采用有限元方法，对大型沟埋式蛋型管道上压力的分布进行了非线性分析，并与现场实测结果进行了比较，吻合较好。表明对大型沟埋式管道的上压力，采用弹塑性理论的非线性分析是比较符合实际的，其结果可供设计参考。

Based on the theory of elastic-plastic deformation, according to the finite element method, this paper presents a nonlinear analysis of the distribution of the soil pressure of the ditch conduit. After being compared, the result got by this way is conformable to that offield testing. This indicates that the application of nonlinear analysis by elastic-plastic deformation tallies with practice to the calculation of the soil pressure of large ditch conduit.The result can give reference to the study, design and construction of the large ditch conduit.