Method for construction of vibro-compacted crushed-stone pile in silty soil

Abstract

A method for the construction of a vibro-compacted crushed-stone pile in silty soil is characterized by comprising the following steps: first, forming a hole, filling a tubular pile with crushed stone, filling the crushed stone while pulling a tube and carrying out vibration, and sequentially and cyclically carrying out operation in this way. The method has the beneficial effects that the method is simple in construction technology, rapid in progress, low in cost, simple and efficient, and the construction quality is ensured; 2, normalized, programmed and standardized operation is facilitated,and the method is easily grasped by operators and managers; and 3, the strength and the whole stability of a foundation are ensured, and the great effects of rapid construction, energy saving and high efficiency are realized.

Description

(1) Technical field

[0001] The invention relates to a construction method of a vibrating crushed stone compaction pile in silty ground. (2) Background technology

[0002] The gravel compaction pile is through the compaction and vibration of the surrounding silt and sand layers during the pile forming process, and the reinforcement effect is obtained by pressing in the gravel, so that the soil particles around the pile are rearranged and compacted, and the void ratio is reduced. Smaller, the density increases. At the same time, the formed gravel compaction pile reinforcement itself is a good drainage channel. Its existence is not only conducive to the dissipation of excess pore water pressure in sandy soil and silt soil layers, but also effectively enhances the liquefaction resistance of the soil. Moreover, under the action of load, the reinforced body of the crushed stone compaction pile bears the load together with the sandy soil and silt layer, that is, the composite soil...