Study On The Joint Stress Performance Of New Epoxy Resin Concrete Urban Underground Sewage Pipe

There are major defects in the strength and durability of ordinary concrete underground sewage pipes,so it is urgent to solve a new type of sewage pipe that can solve existing problems.As a new type of polymer concrete,the new epoxy resin concrete has the characteristics of high strength,fast molding,and good resistance.The application of new epoxy resin concrete is applied to the urban underground sewage system components.For the first time,this article proposes that the new epoxy resin concrete is applied to urban underground sewage system structural components,and the following research work is carried out for the above situation.First,optimizing the preparation process and connection process of optimizing the new type of epoxy resin concrete underground sewage pipe node.Because epoxy resin glue has strong adhesion,it is usually used for artificially stirring for early preparation technology,which consumes manpower and time,and traditional wooden models are not easy to remove,poor quality,and low utilization rate.The instruments are optimized and using steel templates.By using point-welding process,it is convenient for components to remove molds,improve the quality of molds,and reuse.This article combines existing connection processes and changes on this basis,forming a set of new type of epoxy resin concrete assembly bearing processes.Second,using ABAQUS software to determine the size of the pipeline.Based on the size of the material performance of the new epoxy resin concrete,the pipeline size is optimized,and the effects of the wall thick Ness and length of the connection at the connection on the new epoxy resin concrete discharge pipes are analyzed.By comparing and analyzing the stress and strain cloud map of the wall thick Ness and length at different connections.The conclusion is the maximum tensile stress and maximum compression stress of the new epoxy resin concrete discharge tube are located at the end,the stress and strain of the stress and strain at both ends of the tube are significantly greater than the socket,and the stress state outside the pipeline is significantly greater than the outside.And when the connection length is 120 mm and the wall thick Ness is 40 mm,the strain and the bearing capacity are the best.Last,select the optimal solution for a foot-foot test.Designing a new type of epoxy resin concrete sewage ducts for the premium pipes specially pouring mold,pour the new type of epoxy resin concrete sewage discharge pipe and 3 roots,and perform pipeline external pressure load tests according to the method given in the specification.Comparing the crack load with the values given in the destruction load with the values given in the specification to verify the accuracy and size of the finite element model establishment.The results of the research have laid the foundation for the application of the new type of epoxy resin concrete in the urban underground sewage system,especially for the structural design of the new epoxy resin concrete sewage pipe in the future.