TITLE:
Three-Dimensional Analysis of Buried Steel Pipes under Moving Loads
AUTHORS:
Bahram Navayi Neya, Mehdi Alijani Ardeshir, Ali Aghajani Delavar, Mohammad Zaman Roshan Bakhsh
KEYWORDS:
Buried Steel Pipeline, Vehicles Load, Motion Direction, Numerical Simulation, Stress
JOURNAL NAME:
Open Journal of Geology,
Vol.7 No.1,
January
12,
2017
ABSTRACT: The three-dimensional response of buried steel pipes
under vehicle loads is investigated using the finite element analysis. The
analysis is conducted using the finite element program ABAQUS. The effects of
the vehicle parameters, pipeline parameters and soil parameters on the response
of the buried pipeline were discussed. The results indicate that the maximum
principal stresses in a buried pipe under vehicle loads are significant for
burial depths of less than 1 m. The maximum principal stresses of the buried
pipeline decrease as the burial depth, vehicle velocity and surrounding soil’s
elasticity modulus increase. For small burial depths, the stresses in buried
pipes caused by vehicle motion in the direction normal to the pipe axis are
more critical. However, the effects of motion direction are insignificant when
the burial depth and the surrounding soil’s elasticity modulus increase. As the
diameter of a buried pipe decreases, the maximum principal stresses increase.