Molding device and molding method for long spiral extruding rock-entering cast-in-place pile

A forming device and a long screw technology, applied in drilling equipment and methods, sheet pile walls, earthwork drilling and mining, etc., can solve the problems of reducing pile end resistance, difficulty in ensuring pile body quality, and inability to effectively ensure grouting quality
CN102535445AActive Publication Date: 2012-07-04SHAANXI ZHUANGXIN CONSTR ENG
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHAANXI ZHUANGXIN CONSTR ENG
Publication Date
2012-07-04

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Abstract

The invention discloses a molding device and a molding method for a long spiral extruding rock-entering cast-in-place pile. The molding device comprises a drilling device formed by assembling a drill stem and a drill arranged at the bottom of the drill stem coaxially, a lowering / lifting system, an electric rotating driving mechanism for driving the drilling device to rotate continuously, a slip casting device for grouting casting slip into molded drill holes continuously to form bored piles when the lowering / lifting system lifts the drill stem, a drilling depth / lifting height detecting unit, a pumping flow detecting unit, a controller and a parameter input unit connected with the controller. The molding method includes: 1 setting initial parameters; 2 drilling; 3 further processing after drilling is in place; and 4 lifting the drill and slip-casting simultaneously. The molding device and the molding method are reasonable in design, easy to use and operate, high in automation, easy in molding process, easy in controlling of pile quality, wide in application range and capable of solving a plurality of problems in the existing molding devices and molding methods for the long spiral extruding rock-entering cast-in-place pile.
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Description

technical field

[0001] The invention belongs to the technical field of foundation construction, and in particular relates to a forming device and a forming method for a long spiral extruded cast-in-place pile. Background technique

[0002] At present, in foundation projects such as construction, water conservancy, and highways, long spiral hole-forming cast-in-situ piles are widely used due to their advantages of high speed, low noise, no need for mud retaining walls, and low construction costs. However, in the actual construction process, the existing common long spiral hole-forming cast-in-situ piles have the following defects and deficiencies: first, the scope of application is limited, and it can only be applied in soil layers such as cohesive soil, silt, and filling soil. When sand pebble stratum or large-diameter pebble layer, then drilling is difficult or can't be drilled into; Thereby, the soil layer adaptability of existing long spiral hole-forming cast-in-situ pile...

Claims

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