Construction Parameters On The Reinforcement Of Dynamic Consolidation Effect And Numerical Simulation

Compaction method is a convenient, economical and environmental foundationtreatment method. Since its inception, quickly became popular in the world. For thedynamic compaction method, the ultimate goal is the least number of compaction toachieve the desired reinforcement effect. Construction of dynamic compaction process isvery simple, the idea of dynamic compaction foundation reinforcement compaction methodoriginated in ancient. Although the dynamic compaction method is widely used at present,but so far no comprehensive theory to guide the design of dynamic compaction. Dynamiccompaction shock loads when the ground is non-linear loads, and because the occurrenceof nonlinear soil deformation, load form dynamic compaction method is very complex, theuse of traditional analytical method to study the dynamic compaction process is verydifficult. The main approach is to solve by means of numerical simulation technology.Dynamic Compaction of reinforcement theory research has focused on two aspects:dynamic consolidation theory and the theory of shock wave compaction. For theconstruction of dynamic compaction method parameters and reinforcement effectrelationship between research, mainly some of the engineering staff combine theirengineering practice, carried out some experimental studies. Currently, the design ofdynamic compaction method is mainly based on past experience.This article first summarizes the dynamic compaction method of development andresearch status, focused on analyzing the dynamic compaction method of dynamicconsolidation theory and the theory of shock waves and a variety of soil compactionreinforcement theory, on this basis, the construction parameters for dynamic compactionreinforcement effect relationship in-depth analysis to Qingdao Municipal constructionlogistics Park-based dynamic compaction project, for example, a comprehensive analysisof dynamic compaction parameter combination with reinforcement effect relationship.Finally, the combination of the project, using the current very popular geotechnicalengineering numerical simulation software FLAC3D a numerical simulation of theanalysis. This work done are:(1) theoretically soil reinforcement theory are summarized and analyzed, includingthe dynamic consolidation theory and the theory of shock wave compaction analysis, anddifferent soil of consolidation mechanism. (2) dynamic compaction method theoretically design and construction parameters ofa comprehensive analysis of various parameters on the reinforcement effect was evaluated.(3) with engineering examples, a comprehensive analysis of dynamic compactionmethod construction parameter combinations for foundation reinforcement effect.(4) the use of wave theory, deduced when tamping rammer, contact stress peaksizes, as well as loading and unloading time.(5) establish procedures for the use of FLAC3D finite difference numerical model,theoretical derivation of the contact stress time history input into the model to simulate theconstruction process of compaction.(6) on the dynamic response of the model to carry out the relevant data collection andcomputer graphics, the output results of a comprehensive system analysis. Analysis of thedynamic compaction soil mass stress-strain conditions, soil reinforcement depth, and clickram sink, single point ram sink capacity, all-round have to study the displacement of soilchanges.