Pipe soil Interaction Mechanism Responses of Channel buried Pile in Rivers or Creeks

Abstract:

Based on ABAQUS software, a 3 D finite element model containing the contact problems of rivers or creeks and soil as well as pipe soil was established to analyze the mechanics on mechanism responses of buried piles. Behavior of the pipe vertical soil pressure,lateral earth pressure and pipe stress were evaluated in detail with respect to varied foundation treatment. And the behavior of the top soils difference settlement was evaluated by layer wise summation and finite element method(FEM). The results indicate that the max soil pressure on pipe top, bottom and side of pipe occurs when vehicle load is on the top. The Mises stress, which can reach up to 4.887 MPa, can’t be neglected. Layer wise summation can’t be calculated precisely for the soil pressure concentration phenomenon caused by pipeclay relative stiffness is not taken into consideration. And the problem can be solved by a combination of FEM with layer wise summation method.

Key words:subgrade engineering; buried pipe; pipe soil interaction; differential settlement