Research And Application Of Dynamic Compaction And Deep Mixing Method In Building Construction

The foundation of structure should be consolidated when the carrying capacity and deformation is not satisfied. So it is meaningful to study the consolidated of foundation, and summarize economical and practicable method for the complex foundation reinforcement technique. This can provide a theoretical and practical base for project construction.There are many methods of foundation consolidation for civil engineering, such as soil exchange method, prepress method, dynamic consolidation method, vibrancy rushing method, soil and podsol dense pile method, sand pile, cement-coal-powder and gravel pile method, deep mixing method, high-pressure eject masonry, etc. The dynamic consolidation and deep mixing method ( DMM ) are very common in project construction. Dynamic consolidation is a very important method to soil consolidation, and is very suitable for saturation sand, rushing soil and some soft soil foundation. DMM, which is another form of foundation consolidation, can increase the carrying capacity of soft soil and decrease the settlement and enhance the slope stabilization effect. The consolidation principle and construction techniques of dynamic consolidation method and DMM are quite different from each other. Combining the project practice, it is very necessary to deeply study two consolidation methods.In this thesis, first of all, the technical characteristic and consolidation principle of dynamic consolidation method and DMM are discussed. This includes the consolidation principle, the scope of application, design method, construction technique, quality control and so on. Secondly, how to select and estimate a scheme of foundation consolidation are also discussed. The technique characteristic of dynamic consolidation method and deep mixing method are analyzed in the paper. This is the base to choose a suitable method for foundation consolidation. At last, according to a practice project, the thesis gives a particular discussion for the construction process and the application effect of the two methods.The primary purpose of this paper is that gives a particular explanation of the work principle and construction technique for the dynamic consolidation method and DDM. It also provides the evaluating schemes for foundation consolidation. So we can getsome useful methods for foundation consolidation in civil engineering.