Liquefaction Regions of Seafloor Soil Under Wave Loading in the Chengdao Area

Based on sediment property,real-time wave parameters,and the relationship between pore water pressure and vibration time derived from dynamic triaxial test,the liquefaction time of the seafloor soil is calculated;furthermore,liquefaction potential regions in the study area are plotted according to the liquefaction time of each region.It turned out that the seabed between 7 m to 8 m bathymetric lines was the most probable liquefaction area and the liquefaction probability of the seabed appeared to decline from in shore areas to offshore areas.Meanwhile,the liquefaction probability of the study area is mostly high when the soil depth is no more than 2.5 m,while it is quite low when the soil depth is 4m.The conclusions reached in this study may provide a scientific basis for marine engineering design and construction.