Analyse The Influedce Of Vehicle Load On Buried Drainage Pipe

The drainage project is one of the important components of the urban infrastructure.The drainage pipeline has a large extension range in the city underground,and its construction investment occupies a large proportion in the drainage project.The design,construction and quality of urban drainage pipelines directly affect the quality of production,living,transportation and environment in cities.The selection of pipe material in the construction of drainage pipeline is influenced by many factors.The strength and stiffness of pipe material are the important factors that can not be ignored.Most of the selection of pipe materials in practical engineering adopts the qualitative analysis of experience.In this study,mechanical modeling and numerical calculation method are used to analyze displacement changes of buried drainage pipelines under different working conditions,and put forward the theoretical basis for the selection of pipe materials.In this paper,through literature review and actual data investigation,introducing the characteristics of different pipe materials and the technical characteristics of various pipeline construction,analysing the problems in the design,construction and management of the drainage pipes.The paper studies the foundation of pipe laying and the form of upper load,discusses the relationship between pipeline and foundation,the interaction relationship of pipe and soil,the propagation model of ground load,and then and analyzes three load models of buried pipelines,include vehicle load model,ground motion load model,and foundation uneven settlement model.Based on the research objectives,based on the vehicle load mode,established a simplified model of buried pipeline mechanics,which called the uniform load model and the vibration load model.Using the ABAQUS finite element analysis software,And three commonly used drainage pipes,such as reinforced concrete pipe,glass tube and HDPE pipe,are selected as the research object.And under the uniform load and vibration load,the influence of different buried depth,pipe diameter,deformation modulus of foundation,ground Poisson’s ratio,pavement load,car speed and wheel pressure on vertical displacement of pipeline is calculated and analyzed.At last,put forward some opinions on pipeline foundation treatment and drainage pipe.