摘要
A new type of compound conduit is designed and the finite element method(FEM)is applied to analyze the mechanicalperformance of a typical compound conduit.The results of the numerical simulation confirm that the distributionsof the strain,stress and the flexure distortion of the conduit are reasonable under the working conditions,and thestress and strain are continuous at the interface of the crust and the pipe liner.The conduit can endure 7.4 timesof the working load before break,which fits well with that of the experiment and means that the conduit has goodability to bear overload.The peak value of the flexure distortion of the conduit(6 m)is about 3 mm in the middlebottom of the pipeline,which also accords well with that of the experiment.
