Study on the Reinforcement Morphology of Sedimentary Soil Foundation by Rock-throwing Squeezing and Dredging Method
In this paper,the ultimate balance analysis theory is used to study the reinforcement morphology and the settlement deformation law of the subgrade when the rock-throwing extrusion dredging method is applied to the silt foundation of the aquatic grassland in Qinghai Lake. This analysis discusses the relation-ship between the dredging height,the depth of dredging and the total thickness of the required stone throw-ing under the action of the rock-throwing squeezing method,and the reinforcement effect of the rock-throw-ing squeezing method on the water-grass polished soil foundation can be judged. Using finite element soft-ware,the settlement deformation law of the silt subgrade under the action of rock throwing extrusion method is analyzed. The settlement deformation of the pavement calculated by numerical simulation is compared with the theoretical settlement value calculated according to the limit equilibrium theory,The numerical simulated road settlement deformation value of the load action at all levels is normalized and mathematically fitted,and a formula that can be used to initially calculate the empirical formula of road surface settlement of the water and grassland powder soil foundation under the action of different thicknesses of stone throwing is proposed.
water meadowsrock throwing and squeezing methodlimit balance analysissqueezed silt formfoundation reinforcement
万方数据
维普
