ABSTRACT

It is commonly assumed that torsion is not applied to the pipelines in field conditions, or can be ignored because of the geometry of the pipelines. In previous experimental studies most researchers have used short pipe sections in which horizontal forces were applied at their centres (e.g. Cheuk 2005; Chin 2005), ignoring the torsion applied without measuring it. In some cases the torsion may not be negligible and should be included in the analysis. To determine the importance of the generated torsion, a model pipe section and loading arrangement capable of measuring the torsion produced during controlled pipe movement without rotation was devised.