The Numerical Analysis Of Dynamic Consolidation Applied In Saturated Soft Clay Foundation Treatment

Because of its low permeability,when saturated soft clay being reinforced by dynamiccompaction method,the water can not be discharged in time,leading to the phenomenon of“rubber soil”,the purpose of soil reinforcement can not achieve.By improving the traditionaldynamic compaction,the level and vertical drainage body set in the saturated soft clayenhance soft clay permeability,“rubber soil”is avoid,get the reinforcement purposes.In verticaldrainage material selection, plastic drainage board method is took more.Dynamic compaction and plastic drainage plate method in engineering practice hasaccumulated a set of design and construction methods.In considerationg of Engineeringexperience,this method is effective reinforcement depth of10meters,still can not meet theneeds of certain foundation reinforcement works,and pore water discharge is still relativelyslow,the duration is slightly long,well point dewatering with high efficiency, fast drainagecharacteristics,the other in the effective reinforcement depth to make up the deficiencies ofdynamic compaction method and plastic drainage board,how to combine both,has a veryimportant significance to improve the engineering reinforcement effect and speed upreinforcement duration.On the basis of previous studies and practice,through the analysis of dynamiccompaction method and precipitation mechanism of consolidation method to explore thedynamic compaction and well point dewatering and plastic drainage board method feasibilitysoft clay foundation,analyzes the various aspects of the role,the requirements of the Actdesign and construction methods and construction technology and the key points,andcombined with the dynamic compaction and plastic drainage plate method engineeringexamples to study the changes in pore water pressure and ramming Shen amount of the construction process law,and finally with the FLAC3D finite difference software,numericalsimulation of the instance,on this basis, considering precipitation,come to the water levelchanges in the soil under the parameter changes,some conclusions,for guidance worksempirical and theoretical research.