Cobble stratum super three-axis agitation stake and stirring method thereof

Abstract

The invention belongs to the field of building pile foundation engineering construction, and particularly relates to a cobble stratum super three-axis agitation stake. The cobble stratum super three-axis agitation stake comprises three drill rods, a drill bit component fixed to the bottom of the drill rods, and a blade component connected to the drill rods, wherein the drill bit component is connected with a stepless speed change power head through the drill rods, and the drill rods are connected to a pile frame through a supporting frame; the drill bit component comprises a drill collar connected to the drill rods, a drilling rig connected to the drill collar, and a hollow drill bit, and three to four alloy tool bits are fixed to the drilling rig; the blade component comprises multiple sets of blades connected to the drill rods, and the blades are cutter type blades. The drilling bit component transmits the rotation moment of the power head through the drill rods and conducts drilling into soil mass, drilling capacity is high, abrasion of the drilling rig is small, and efficient construction of the three-axis agitation stake in hard stratums including cobble stratum is achieved; furthermore, pollution can not be caused during construction, construction site is clean and tidy, noise is low, mud recovery and treatment are not needed, and an environment-friendly construction technology is realized.

Description

technical field [0001] The invention belongs to the construction field of building pile foundation engineering, and in particular relates to a super three-axis stirring pile in pebble formation and a stirring method thereof. Background technique [0002] The three-axis cement-soil mixing pile was originally developed by Japan Naruko Co., Ltd. The main purpose is to solve the problems of incomplete overlapping of adjacent piles of the two-axis cement-soil mixing pile and difficulty in ensuring the verticality of the pile. The application of steel cement-soil mixing wall (SMW construction method) foundation pit enclosure structure in the field of construction in my country has made outstanding contributions for nearly 20 years. At present, it has been widely used in coastal soft soil areas such as Shanghai, Jiangsu, Zhejiang, Tianjin, etc., and gradually extended to Fujian, Anhui, Hubei and other areas. Three-axis cement mixing piles are suitable for soil layers such as cohes...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems of poor pile-forming effect and unsatisfactory water-stopping effect of existing traditional technical equipment in hard strata such as pebbles, the present invention provides a super three-axis stirring pile for pebble strata. Rotation torque, drilling into the soil, its drilling ability is strong, and the wear of drilling tools is small, which realizes the efficient construction of three-axis mixing piles in hard strata such as pebbles

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