Analysis on Influence Factors of Buried Fluid-Conveying Steel Pipeline Under Site Settlement

Abstract

Settlement site has a great influence on pipelines, which sometimes leads to pipelines damage and unable to work properly. In order to evaluate the safety of buried pipelines, taking the long distance pipeline crossing settlement site as an object, the overall numerical model including site and pipeline was established by using finite element software-ADINA. Influences on axial strain of pipeline were investigated, such as diameter, wall thickness, buried depth, pipe material, soil cohesive force, and pipe internal pressure. Then, key factors were identified according to the influence weight of these parameters on mechanical properties of pipeline.