Study on the Circumferential Mechanical Properties of Buried PE Pipes with Soil Erosion Void

Soil erosion void is a common pipeline defect, which has a great impact on the stability and safety of pipeline operation, but the force characteristics for eroded pipes are still unclear. Buried PE pipes in municipal engineering are taken as the research object, and the calculation method of soil pressure at the bottom of the pipe with soil erosion void is proposed, and the influence of factors such as size and location of the void on the stress characteristics of buried PE pipes with soil erosion void is studied by using the numerical model. The results of the study show that the void will affect the structural stress of PE pipes, the size of the void is positively correlated with the influence degree and influence range of the pipe; the location of the void determines the influence location of the pipe.