Pipeline Bending Research Articles

Axial, Bending and Torsional Behavior of Pipelines

Axial pull-out, bending and torque-rotation stiffness and capacity data and equations for underground torsional behavior are provided for utility pipelines using rubber gasket joints. Analytically predicted values are compared with the experimental data with satisfactory results. Axial pull-out for utility pipes occurs at 1.2 in. (30 mm) displacement. Metal-to-metal binding takes place at very small axial push-in or after 4 degrees bending rotation of the joint. Failure mechanisms are explained, and a modified joint which could eliminate high seismic stress buildup is outlined.

Bending of jointed pipelines in laterally deforming soil. Technical note : Tarzi, A I; Menzies, B K; Crofts, J E Geotechnique, V29, N2, June 1979, P203–206

Bending of jointed pipelines in laterally deforming soil. Technical note : Tarzi, A I; Menzies, B K; Crofts, J E Geotechnique, V29, N2, June 1979, P203–206

On Pipeline Bending at the Seabed

Analysis is presented on stresses in a pipeline caused by bottom irregularities during installation and by trenching operations. The governing equations are described in non-dimensional forms, and results of the computer solutions are presented in terms of general dimensionless graphs, so they may be applied directly to various problems. It is found that the magnitude of the maximum stress is substantially different when the pipe span end conditions are changed. Further, the inclusion of axial tension considerably alters stresses in the pipe spans. This becomes particularly significant in some pipe installations where elevated bottom tensions are required.

Bending of jointed pipelines in laterally deforming soil

Bending of jointed pipelines in laterally deforming soil