Construction method of biaxial bidirectional mixing pile equipment

Abstract

The invention discloses double-shaft bidirectional stirring pile equipment and a construction method. The double-shaft bidirectional stirring pile equipment comprises a chassis, wherein a steel structure vertical frame is arranged on the chassis, two hanging boxes are symmetrically arranged on the left side and the right side of the steel structure supporting frame, a worm speed reducer is arranged in each hanging box, a power head mechanism is arranged at the lower end of each worm speed reducer and connected with an outer drill pipe and an inner drill pipe, and the inner drill pipes and the outer drill pipes are provided with stirring vanes. The implementation method includes the steps that firstly, the preparing work before stirring is carried out; secondly, double-shaft bidirectional stirring is carried out. The double-shaft bidirectional stirring pile equipment and the construction method have the advantages that the two power head mechanisms are arranged and each provided with the drilling pipes and the stirring vanes, so that the effect of double-shaft stirring is realized, and the double-shaft bidirectional stirring mode also has the advantages of being small in equipment investment, high in construction speed, low in project cost and the like.

Description

technical field [0001] The invention relates to a construction method of biaxial bidirectional stirring pile equipment. Background technique [0002] In the current existing foundation soil reinforcement construction, there are various construction methods and equipment to implement targeted construction methods for each area, as well as placing materials or adding chemicals to assist two-way mixing of the soil to achieve pile formation, soil retention, and stop. Water effect, many domestic and foreign companies and universities have invested a lot of money and time to develop and study what measures and equipment to use for soil reinforcement to achieve the best results and construction progress. The construction method of stirring soil reinforcement first originated abroad, especially in island countries, and it is most commonly used in coastal areas. It uses a single-axis one stirring soil reinforcement. The pile-forming effect is not ideal due to uneven single-axis mixin...

AI Technical Summary

Problems solved by technology

[0004] The characteristic of the two-way mixing pile is that the coaxial surface realizes the relative direction transmission, the cement soil is evenly mixed, and the pile-forming effect is good, but the disadvantage is that the two-way mixing power box is heavy, such as the patent number 200410065861.4 authorized by the state or ZL2008 10019933.X They are both single-shaft and bi-directional mixing, and their structure uses two same type of high-power pinwheel cycloids to drive the bi-directional inner and outer drill pipes, which are hung on the drilling rig tower and are heavy and slow to move, not to mention that they cannot realize bi-axial and bi-directional Drilling two pile types at the same time, the reason is that the power box is heavy, and the tower cannot suspend two power systems to complete the simultaneous drilling of two pile types with double-shaft bidirectional mixing and two lap joints side by side, especially for the enclosure pile type. Its cumbersome mobile drilling tool is slow and the work efficiency is low. In recent years, two-way mixing has been widely used in coastal cities and roads in China for soft soil layer reinforcement, enclosure piles, reaming piles, nail piles, etc. The investment in equipment is small, and spraying The slurry pressure is low, and the required material cost is low, which is adopted by most design units. The only thing is that the equipment is erected high, and the tower suspension system is relatively heavy, which limits the simultaneous drilling of dual-axis and bi-directional mixing, making the construction progress slow. Increased electricity consumption and increased construction costs

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