Stability assessment of submarine slopes subjected to wave-induced pressure is a necessary part of the design process for pipelines or structures in the marine environment, as the instability or liquefaction of the seabed induced by waves can cause significant displacement. To evaluate the stability of seafloor slopes, the upper bound approach of limit analysis combined with strength reduction technique is presented to solve the factors of safety (FS) of seafloor slope considering wave-induced pressure. First, the analytical formula for the stability of seafloor slope under static water condition is derived and the stability is analyzed. Then, waved-induced pressure is considered to act on the surface of slope as an external load to analyze the effects on the stability of seafloor slope. Compared with the results from elasto-plastic finite element method, the present solutions are validated. A series of calculations by changing parameters are carried out. The results show that the effects of wave have some disadvantages on the stability of seafloor slopes and this kind of affect will expand in shallow seas or in the situation of huge waves. © 2014 American Society of Civil Engineers.
|Title of host publication||Geotechnical Special Publication|
|Place of Publication||China|
|Publisher||American Society of Civil Engineers|
|Publication status||Published - 2014|
|Event||Geo-Shanghai 2014 - Shanghai, China|
Duration: 26 May 2014 → 28 May 2014
|Period||26/05/14 → 28/05/14|