With climate change in recent years caused the occurred frequency increasing of extremely waves. Due to sea level rise and the typhoon disasters, it could be caused the pore pressure of seabed may be sustained a build-up state below the coastal structures, and occurring and increasing the risk of the seabed liquefaction.
Most of the past related researches followed the earthquake relevant theory to evaluate the dynamic characteristic of cyclic wave loading, including wave induced the single external stress or internal stress, number of cycles in seabed, and pore pressure generation model for earthquake mechanism. Therefore, this study used experimental mechanics and theoretical model to simulate liquefaction behavior under typhoon wave loading with case study of "Zone A" of Kaohsiung Harbor Intercontinental Container Center at second stage project.
From the related cyclic triaxial test results, this study proposed an pore pressure generation model for seabed under long-term wave loading by the hyperbolic sine function, and suggest a testing parameter to predict the curve of pore pressure under different test conditions as Tp=0.005, 0.05 and 0.5. The model can be applied in assessment of typhoon wave induced seabed liquefaction potential. The maximum possible liquefied depth is about 6.6m when Tc =1200s in this study area, and provide the well marine geotechnical practical application for seabed stability.
