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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 33
Edited by: B.H.V. Topping
Paper II.8

Modelling of Laterally Loaded Pipelines using Elastic Beam on Elastic Foundation Approach

C.F. Ng#, I.C. Pyrah* and W.F. Anderson*

#Department of Civil Engineering, Queen's University of Belfast, Belfast, UK
*University of Sheffield, Sheffield, UK

Full Bibliographic Reference for this paper
C.F. Ng, I.C. Pyrah, W.F. Anderson, "Modelling of Laterally Loaded Pipelines using Elastic Beam on Elastic Foundation Approach", in B.H.V. Topping, (Editor), "Developments in Computational Techniques for Structural Engineering", Civil-Comp Press, Edinburgh, UK, pp 71-76, 1995. doi:10.4203/ccp.33.2.8
The classical elastic beam on elastic foundation approach has been used for modelling laterally loaded pipelines for over two decades. The classical approach assumes the pipe behaves as an elastic beam whose behaviour is governed by the simple theory of bending of a straight beam and the soil foundation is approximated by a series of discrete elastic "Winkler" type springs. An existing computer program which is based on this approach for modelling the behaviour of linear buried pipelines has been modified to improve the modelling of the pipe. Plastic behaviour of the pipe, change in shape of the pipe cross-section and shear deformation effects have been implemented into the original program. The modifications have been tested and the results show that the modifications have different degrees of influence on the pipeline behaviour and in some situations the effects are significant. Limitations of the modified program have also been outlined.

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