Connectable spiral plate deep dynamic compaction device and construction method thereof

Abstract

The invention belongs to the field of civil engineering, and discloses a connectable spiral plate deep dynamic compaction device. The connectable spiral plate deep dynamic compaction device includes three parts of a round table type pile cap, a connectable pile body and a spiral plate drill bit, wherein the round table type pile cap is connected to the upper end of the connectable pile body through a flange, and the spiral plate drill bit is connected to the lower end of the connectable pile body through a flange. The invention further discloses a construction method of the connectable spiralplate deep dynamic compaction device. According to the connectable spiral plate deep dynamic compaction device, the large round table type pile cap can make a pile under dynamic compaction stress uniformly, and the dynamic compaction consolidation area is expanded; a sound-proof steel barrel is arranged on the upper part of the pile cap, and the noise can be effectively reduced; the ramming depthof the connected pile body can be increased or decreased according to the engineering requirements; and the spiral plate drill bit is spirally drilled into a soil body, the difficulty of constructionis reduced, the noise is low, after drilling to the tamping calibration depth, deep dynamic compaction is conducted, and the effective impact depth of ramming is greatly increased; and the structure is simple, the practicability is high, the stability is good, and the application prospects are wide.

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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