Buckling analysis of high-temperature pressurized pipelines with soil-structure interaction

Abstract

High-temperature pressurized pipelines design requires special attention, as restrained thermal stresses are high. Due consideration should be given to thermal expansion, as stresses in bends of expansion loops are significant. Also, the modelling of the soil-pipe interaction using soil characteristics, especially friction and lateral resistance, is important when analyzing high-temperature pipelines. This paper describes a numerical procedure for the analysis of global and local buckling behavior of high temperature pressurized buried pipelines. Results of finite element calculations are presented and discussed

Problem of large displacements of buried pipelines. Part 2. Stability of straight pipeline under ideally plastic of soil deformation

“…In the pipeline industry, there are a number of commercial programs which allow one to perform complete estimation of stresses, displacements and deformations of pipeline [9]. Note that, in contrast to many programs of structural mechanics, where the calculation of stability is based on search for eigenvalues and eigenforms and where buckling (bifurcation of solution) associates with structure failure, its estimation is not an individual option in pipeline design programs.…”