CUED Publications database

Upheaval Buckling Assessment Based on Pipeline Features

thusyanthan, N and Mesmar, S and Robert, DJ and Wang, J and Haigh, SK Upheaval Buckling Assessment Based on Pipeline Features. In: Offshore Technology Conference, 2011-5-2 to 2011-5-5, Houston, TX. (Unpublished)

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Upheaval buckling (UHB) is a common design issue for high temperature buried pipelines. This paper highlights some of thekey issues affecting out-of-straightness (OOS) assessment of pipelines. The following factors are discussed; uplift resistancesoil models, uplift resistance in cohesive soils, uplift mobilisation, ratcheting, uplift resistance at low H/D ratios and thecorrect methodology for load factor selection. A framework for determining ratcheting mobilisation is proposed. Furtherresearch is required to verify and validate this proposed framework. UHB assessment of three different diameter pipelineswere carried out using finite element SAGE PROFILE package incorporating pipeline mobilisation and the results arecompared with semi-analytical formulation proposed by Palmer et al. 1990. The paper also presents a summary of as-laidpipeline features based on projects over the past 10 years.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Divisions: Div D > Geotechnical and Environmental
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 20:25
Last Modified: 20 Oct 2020 03:18