Dynamic characteristics of silt-solidified soil and its application in seismic analysis of vertical bank revetment
This paper investigates the dynamic characteristics of silt-solidified soil based on the land reclamation project at Dalian Linkong Industrial Park.The finite element software FLAC3D was used to simulate the dynamic response of vertical caisson revetment structures with different foundation treatment schemes under earthquake action.The seismic safety of these revetment structures was quantitatively evaluated by analyzing factors such as acceleration response,pore pressure,effective stress,and residual deformation.The test results for the dynamic characteris-tics show that the damping ratio of silt-solidified soil increases with shear strain and the content of the curing agent.Additionally,higher confining pressures result in lower damping ratios.Nu-merical analysis results show that under earthquake action,the acceleration amplification coeffi-cient shows a different peak value under different foundation conditions.The sand layer below the caisson does not experience liquefaction.Further findings reveal that the residual deformation of a caisson placed on a silt-solidified soil foundation is significantly smaller compared to one on an un-disturbed silt foundation.Moreover,high water levels contribute to reducing residual deformation and improving the caisson safety.These insights can provide valuable references for the seismic design of similar port projects.
万方数据
维普
