Analysis on Additional Stress for Apron Oil Pipe under External Loads

Abstract:

To analyze the structural response of oil pipe under external loads, the interaction between oil pipe and its surrounding soil was simulated based on ABAQUS software, and the finite element models for apron oil pipe were established and verified. By applying the finite element models, the research presented the characteristics of additional stress distribution, and the structural stress and deformation of oil pipe varied with its buried depth induced by external loads including aircraft load, construction vehicle load and vibratory roller load respectively. The results indicate the additional stress distribution appears to be parabola curve in the range from the pipe top to the 60°side of pipe, and the additional stress values are distinct with different buried depth of pipe. The structural stress and deformation of oil pipe induced by aircraft load and construction vehicle load are far less than its allowable values, even if the buried depth approximates to its diameter, while those induced by vibratory roller load reaches strength failure criteria of pipe material, and is the most disadvantageous load type and has significant impact on the buried depth of oil pipe.