The Prediction And Governance Of Foundation Subsidence After Construction For Seaside Silt Soil

With the lack of land resources and the advance of urbanization,a growing number of coastal cities took reclaimed waterfront to adapt to this situation,happening with the subsidence of the soft soil of the coastal area.the soft soil are widely distributed in the coastal city in China,it has kenspeckle creep characteristics,the research of the creep of the soft soil is of great signality to the subsidence after construction,at the same time,there are a lot of draws in the traditional handling method of the subsidence after construction for roadbed,such as slow construction operations,large consumption of human resources and material resources.High polymer is a new type of chemical injecting paste material,because of its distinguishing feature such as fast expansion consolidation and good resistance to water penetration,it gets more and more attention,however,the theoretical research of polyurethane injecting method in the subsidence after construction of the soft land area is still very poor.This article look up literature about engineering geology in a district of The Pearl River Delta,summarized the physical and mechanical properties of the local typical soft soil,then got the creep parameter by curve fitting based on the relevant date of engineering test to establish the creep model,and compared the model considering creep with the model not considering creep to analyse the effection of the soft soil creep on the subsidence after construction.Finally,this article did theoretical research on dealing with the subsidence of pavement after construction by polyurethane injecting method in this district and imitated treatment effect by ABAQUS.Specifically doing the following work:1.add up statistical test data to get parameters(A?m?n)of soft soil creep by curve fitting.2.look up measured data about the soft soil in this district,summarize the index of physical mechanics of the local typical soft soil and simplify the pavement structure,establish the model considering creep,and compared with the model not considering creep to analyse the effection of the soft soil creep on the subsidence after construction3.match the maximum expansibility of high polymer materials to its density,work out grout amount,and apply in numerical modeling on treatment effect of polyurethane injecting method by ABAQUS...