CFG pile base can use tamper tamp it
1, CFG pile profiles:CFG pile is English Cement Fly-ash Gravel Pile abbreviation, meaning cement fly ash gravel pile, by gravel, stone chip, sand, fly ash mixed with cement, water mixing, with a variety of pile machine made of variable strength pile. By adjusting the amount and proportion of cement, the strength grade varies between C15-C25, which is a kind of pile type between the rigid pile and the flexible pile. CFG pile and soil between piles with the formation of CFG pile composite foundation to work together through the cushion, so it can be based on the behavior of composite foundation and calculation in engineering design. CFG piles generally do not need to calculate the reinforcement, and can also use industrial waste, fly ash and stone debris as admixture, further reducing the cost of the project.
2. Basic principles:The cohesive strength pile is the representative of composite foundation, and is used in high-rise buildings and super high-rise buildings. CFG pile is the abbreviation of cement fly ash gravel pile (cement, fIying-ash, gravel, pile). It is made of cement, fly ash, gravel and sand with water of high bond strength pile formed by mixing together, to form a composite foundation and pile and cushion. CFG pile composite foundation cushion and connected by the foundation, whether pile general fell hard soil or soil, can ensure the soil between piles has always been involved in work. Because the strength and modulus of the pile is larger than the soil between the piles, the stress at the top of the pile is greater than that on the soil under the action of the load. The pile can transfer the load to the deeper soil layer and reduce the load that the soil between the piles bear. Thus, because of the action of the pile, the bearing capacity of the composite foundation is increased, the deformation is reduced, and the CFG pile is not suitable for reinforcing bars, and the industrial waste material and the fly ash are used as admixture, thereby greatly reducing the project cost.The design of composite foundation, cushion thickness is arranged between the base and the pile and soil is composed of loose granular material, is a core technology of composite foundation. The foundation is set cushion, a great impact on the bearing capacity of composite foundation. If there are no cushion, loading behavior of the composite foundation and pile foundation is similar to that of soil between piles bearing capacity of composite foundation can be difficult to play. Under the foundation of cushion, settlement of bearing capacity of soil between piles play not only depends on the pile, the pile end even fell on good soil, but also to ensure the load to the soil between piles with cushion layer, the soil pile to bear load.
