Acta Mechanica Sinica

, Volume 17, Issue 1, pp 86–96 | Cite as

Wave-soil-pipe coupling effect on submarine pipeline on-bottom stability

  • Gu Xiaoyun
  • Gao Fuping
  • Pu Qun
Article

Abstract

Wave-soil-pipe coupling effect on the untrenched pipeline stability on sands is for the first time investigated experimentally. Tests are conducted in the Ushaped water tunnel, which generates an oscillatory flow, simulating the water particle movements with periodically changing direction under the wave action. Characteristic times and phases during the instability process are revealed. Linear relatiohship between Froude number and non-dimensional pipe weight is obtanied. Effects of initial embedment and loading history are observed. Test results between the wave-soil-pipe interaction and pipe-soil interaction under cyclic mechanical loading are compared. The mechanism is briefly discussed. For applying in the practical design, more extensive and systematic investigations are needed.

Key Words

submarine pipeline on-bottom stability wave-soil-pipe coupling effect sandy seabed 

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Copyright information

© Chinese Society of Theoretical and Applied Mechanics 2001

Authors and Affiliations

  • Gu Xiaoyun
    • 1
  • Gao Fuping
    • 1
  • Pu Qun
    • 1
  1. 1.Institute of MechanicsChinese Academy of SciencesBeijingChina

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