Introduction

The axial compressive loads induced by temperature and pressure on a pipeline can occur when the pipeline is resting on the seabed.

The buckling occurs as the 'restrained' compressive forces are released and the expansion feeds into the buckle. The shape of the buckle that forms is primarily dependant on any original out of straightness and the axial and lateral friction properties between the pipe and seabed.

Lateral buckling assessment usually consists of analytical calculations to 'screen' the pipeline, and if there is a propensity for buckling, then finite element analysis is conducted to determine the plastic strains in the pipe.

Lateral buckling is not necessarily an issue. If the deformed shape does not cause the bending to exceed code pecified strains, then no mitigation measures will be required.

Notable Projects

Project Name
Project Number
Notes
BAOBAB
Notable due to the Pipe in Pipe nature
Greater Plutonio
Deep Water, using SAFEBUCK
Qatar Gas
KW

Large Diameter Pipe
Shallow Water
Snake Lay Solution

 

Other Projects

Project Name
Project Number Notes
EPC2B
KW 0728
Controlled Buckles on Existing Pipeline Crossings
Algeria Pipeline
KW 1071
Onshore
Deep Panuke
 

 

Codes & Standards

Company
Title
Doc Number / Date
SAFEBUCK JIP
Safe Design of Pipelines with Lateral Buckling - Design Guideline
DNV
Global Buckling of Submarine Pipelines
DNV-RP-F110
DNV
Submarine Pipeline Systems
(Strain Based Limit State)
DNV-OS-F101

 

Course Notes

Author
Title
Notes
C. Sicilia
Lateral Buckling Assessment and Mitigation Design
Trevor Gee
IBC
Pipeline Course

 

Books

Author
Title
Chapter
Mikael Braestrup
Design and Installation of Marine Pipelines
6.5

 

Papers

Author
Title
Notes
Hobbes, R. E.
In-service Buckling of Heated Pipelines, Journal of transportation Engineering, ASCE, Vol. 110, No.2, March 1984, pp. 175-189
Approximate method for determining propensity for lateral buckling
Taylor, N. and Gan, A. B
Submarine pipeline Buckling – Imperfection Studies, Jour. Of Thin-walled Structures, Vol. 4, 1986, pp 295-323
A developed version of ‘Hobbs’, including the effects of initial OOS

 

Prepared Calculations

Title / Software
Description
Owner / Athor
Hobbs / Excel
Predicts the onset of buckling
KAJW / CSG

 

Related Subjects

Expansion

Upheaval Buckling

Lateral Buckling

Return

If the lateral buckles are found to be excessive, then mitigation measures can be taken. Mitigation measures inculde: