Abstract
To investigate the 2D mechanical response of flexible buried pipelines beneath roadway under static loads, taken high-density polyethylene (PE) as an object, ANSYS finite element commercial software is employed to construct pipe-soil interacting coupled model. The influence of burial depth, the diameter of the pipe, and modulus of backfilled earth on the deformation of the pipe are studied with the newly developed model. These results indicate that: (1) the maximum vertical displacement and Von Mises stress appear at the top of pipe and side of the internal surface of the pipe, respectively; (2) even if burial depth does not have a significant effect on mechanical characteristics of pipe, there is optimal burial depth; (3) the higher the diameter of conduits, the larger modulus backfilled earth, the more difficult it is to destroy pipe breaks.
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