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Publications
Wang, ZK., Ding, QK., liu, DY., He, F. and Guedes Soares, C. (2024), Analytical study on lateral buckling of lined pipes under high temperature and high pressure, Applied Ocean Research, Vol. 153, 104239.
The lined or clad pipe with a highly corrosion-resistant material inner layer by a mechanical bonding process or by welding clad material on a carbon steel pipe is always applied to subsea pipelines conveying sour oil and gas and lateral buckling may take place for unburied lined pipes under high-temperature and high-pressure conditions. Closed-form analytical solutions to different lateral buckling modes are obtained, incorporating the thermal and pressure-induced axial compressive force by using the Euler-Bernoulli beam theory. The influences of different buckling modes on the buckled configurations and post-buckling behaviour are discussed. In addition, the buckling behaviour of the outer pipe and liner in the post-buckling process is compared. The results show that the buckled length of the lined pipe can’t be assumed to be a fixed value in the lateral buckling analysis. Different types of lateral buckling modes only affect the behaviour of lateral buckled deflection, however, it has little effect on the axial deformation behaviour of the lined pipe. In the post-buckling process, the axial compressive force in the wall of the liner may be higher than that of the outer pipe with a sufficiently large temperature.
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