| Our country is a populous country,with the rapid economic growth,the development of urbanization,resulting in the use of land resources is more tense,more and more large-scale project site in the sparsely populated mountainous areas,but the mountainous terrain complex,many projects Are faced with a huge amount of digging,high fill the construction of the problem,so to solve the problem of foundation treatment is particularly important since the eighties of last century,a dynamic compaction method from abroad,with its construction of fast,economic Of the rationality,and become the first choice for the reinforcement of soil foundation.Dynamic compaction is a modern foundation treatment technology based on the method of hammer compaction,but the two are very different in many aspects,including the application scope,reinforcement effect,construction technology and reinforcement effect.But also an active way of reinforcement,it is the soil as a technical requirements to meet the engineering requirements,to fully play its own effect,in the construction site to make an article,fully meet the rock "full use of rock itself," the overall principle.The method of dynamic compaction is often the most effective and cost-effective method to reinforce the foundation in the mountain condition.Therefore,the reinforcement mechanism of the dynamic compaction method is analyzed and studied in depth,so as to optimize the design of the dynamic compaction and to guide the construction Purpose,with significant research value.In this paper,based on the research of different experts and scholars on the strengthening mechanism of dynamic compaction,the reinforcement mechanism of dynamic compaction,the design principle of dynamic compaction and the factors that determine the effect of dynamic compaction are systematically combined with the national grid(Anhui)� 1100 KV ancient spring converter station,the theory and design parameters and numerical model suitable for this project are given.The finite difference method of FLAC is used to simulate the dynamic consolidation process,and the vertical direction of the soil under the impact of rammer is calculated Displacement,the side proved the effectiveness of the number of tamping set,used to guide the fielddynamic compaction construction.At the same time,the test data of the dynamic compaction test are used to test the test results,and the test data with reference value are obtained to prove the rationality of the design parameters of the dynamic compaction. |
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