A connectable spiral slab deep layer dynamic compaction device and construction method

Abstract

The patent of the present invention is in the field of civil engineering, and discloses a connectable spiral plate deep layer dynamic compaction device, including three parts: a circular table pile cap, a connectable pile body and a spiral plate drill bit, wherein the circular table pile cap is connected to the The upper end of the connectable pile body and the spiral plate drill bit are connected through the lower end of the flange-connected pile body. The invention also discloses its construction method. The large circular table-shaped pile cap of the patent of the invention can make the force evenly applied to the pile when it is subjected to dynamic compaction, and expand the reinforcement range of dynamic compaction; a sound-proof steel barrel is equipped above the pile cap, which can effectively reduce noise; The connected pile body can increase or decrease the tamping depth according to the engineering requirements; the auger plate drill bit spirally drills into the soil, which reduces the difficulty of construction and has low noise. The depth of impact has been greatly increased. The patented invention has the advantages of simple structure, strong practicability, good stability and wide application prospect.

Description

technical field [0001] The patent of the present invention belongs to the field of civil engineering, and relates to a deep dynamic ramming device with a connectable spiral plate, in particular to a dynamic ramming device and a construction method for effectively increasing the depth of dynamic ramming reinforcement. Background technique [0002] In recent years, domestic dynamic compaction technology has developed rapidly, and its application range has become wider. The dynamic compaction method uses tamping to give the foundation a greater impact force. Under the action of the impact force, the bearing capacity of the soil is greatly improved, and the compressibility is reduced. . So far, the dynamic compaction method has been successfully and widely used to deal with all kinds of gravel soil, sandy soil, artificial filling soil and general cohesive soil, etc., especially for large pieces of gravel soil which are difficult to be reinforced by general methods. And miscella...

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Problems solved by technology

However, the reference level of the dynamic compaction method is generally on the surface, and the maximum impact depth of the super-large energy level compaction is only about 15 meters, and the treatment effect on the flood plain and super soft soil foundation is not outstanding; Intermittent, open-air ramming, construction vibration and noise are relatively large

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