Numerical Simulation And Engineering Case Analysis Of Dynamic Consolidation Method For Reinforcing Foundations

With the development of society and the progress of science and technology,the foundation treatment technology has been developed rapidly.The dynamic compaction method has been widely used,becasuse of its simple operation,reasonable economy,remarkable reinforcement effect and wide application.However,there is no mature calculation method to guide the design and construction,and the deformation of the foundation treated by dynamic compaction method under the action of upper load can not be accurately calculated..Therefore,it is of great significance to study the influence factors and implementation effect of dynamic compaction method on backfill soil foundation reinforcement.In this paper,based on a project example of dynamic consolidation method foundation reinforcement,some specific problems of dynamic compaction method to strengthen high fill foundation are analyzed.The influencing factors of the dynamic consolidation method for foundation consolidation and the improvement direction in the implementation of the project are obtained.the main contents include:1.This paper introduces the background of backfill soil foundation and the advantages of dynamic compaction method.The development of dynamic compaction method and the existing problems in its implementation are briefly described.2.In this paper,the mechanism of foundation reinforcement dynamic consolidation method is described,and the application software and constitutive model of numerical simulation are analyzed and compared.3.The finite element software ABAQUS is used to simulate and analyze the influence of hammer weight,drop distance,hammer diameter and soil physical index on dynamic compaction reinforcement effect.And the deformation and effective reinforcement depth under the same parameters as the actual project are obtained.4.According to the actual project construction situation,the test results after dynamic compaction are compared with the simulation results,and the actual construction results fluctuate around the simulation results.At the same time,the improvement direction of foundation reinforcement treatment and foundation application of dynamic compaction method is proposed.It provides engineering experience for similar projects,and also and is also conducive to the promotion and development of dynamic compaction method.