CN101349059A - New technique of long screw driller for press pouring reinforced concrete - Google Patents

Abstract

The invention relates to a new technology for pressing and filling reinforced concrete by a long spiral driller, which comprises the following steps: a pile setting position is measured and placed; the driller is automatically leveled in position and stops to drill a hole tills reaching the designed depth; a pylome of the middle part of a blade of the long spiral driller always passes through the bottom of a driller head; a valve is used to control the on-off; a marker for controlling the pile forming depth is made on a frame of a driller tower; the top of the blade of a long spiral drill stem adopts a hose with corresponding specification, which is connected with a concrete conveying pipe; a concrete conveying pump in the middle of the blade of the drill stem is used to convey concrete to the bottom of the drilled hole; the concrete is conveyed and the drill stem is upwards lifted to reach the designed height;, and then the concrete is stopped to convey; a crane lifts a reinforced steel cage; an oscillator and a steel pipe connecting device are adopted to transport the reinforced steel cage to the designed depth for pile forming; therefore, the operation is circulated. The new technology has the advantages that through a plurality of practices, when a fourth system soil layer and a loose pebble layer are drilled, the pile is filled by holes; with the method, the method can improve the effect by 120 percent, reduce cost for pile forming, well ensure the quality of pile forming, has remarkable effect, avoids the accident of safety and further meet the requirement of environmental protection.

Description

New technique of long screw driller for press pouring reinforced concrete

Technical field

The present invention relates to the exploration engineering field, a kind of specifically new technique of long screw driller for press pouring reinforced concrete.

Background technology

Building trade foundation construction castinplace pile all is to adopt rotary drilling (or percussion drilling) pile hole at present, with residue at the bottom of mud cleaning hole wall and the hole, after satisfied precipitation requires, transfers reinforcing cage with crane more then; One save downcomer and then to bottom, stake hole, the concrete that top adopts the funnel perfusion to stir.

This operation procedure long construction period, difficulty of construction is bigger, and each step control time is long, all needs crane lifting, the cost height, the pile effect is low, is easy to generate pile quality segregation and fracture accident, security incident takes place simultaneously easily, and the environmental protection degree is lower, and the assurance of construction quality is had certain influence.

Summary of the invention

The objective of the invention is to develop a kind of quality, efficient height, cost is low, the new technique of long screw driller for press pouring reinforced concrete of safety, environmental protection.

New technique of long screw driller for press pouring reinforced concrete of the present invention, its step is as follows:

(1) measuring stake position;

(2) rig autofitting leveling;

(3) hole and stop boring to projected depth: long-spiral drilling machine blade middle part through hole one use the valve gauge tap through to the drill bit bottom, makes marks on the rig pylon and controls the pile degree of depth;

(4) the long screw drill rod vane tip adopts the flexible pipe of corresponding specification to be connected with the concrete carrier pipe, carries concrete at drilling rod blade middle part toward foot of hole with concrete transfer pump, and conveying concrete limit, limit up promotes drilling rod and reaches design height, stops to carry concrete;

(5) crane install reinforcing cage adopts vibrator and steel pipe linkage conveying steel cage to the projected depth pile;

(6) pile is laid in the rig displacement, so cycle operation.

Concrete transfer pump is to adopting steel pipe to connect between the rig.

The advantage of new technique of long screw driller for press pouring reinforced concrete of the present invention is: long screw auger advances because crawler attachment is arranged, and own translational speed is fast, simultaneously the fast effect height of pile-forming speed; The pouring concrete be utilize concrete transfer pump to be transported to the hole by certain pressure at the bottom of, faster than traditional funnel pouring concrete speed, quality is good; The present invention is without the mud hole flushing, also just do not need mud pit, compliance with environmental protection requirements more, and labour intensity reduces, and cost reduces; Employing is transferred reinforcing cage after pouring concrete, can play the closely knit effect of vibrating to the concrete of pile from top to bottom, guarantees pile quality better; Because long-spiral drilling machine oneself moves, pour concrete adopts pumping, has reduced the crane operation degree, reduces labor intensity, and reduces operating cost, has also reduced the generation of security incident.Through facts have proved that repeatedly pore-creating filling pile in creeping into Quaternary system soil layer and loose boulder bed adopts the present invention, can improve effect 120%, the pile cost reduces, and pile quality also obtains fine assurance, effect is remarkable, has avoided security incident, more satisfies environmental protection requirement.

Description of drawings

Fig. 1 is the process chart of new technique of long screw driller for press pouring reinforced concrete.

The specific embodiment

According to shown in Figure 1, new technique of long screw driller for press pouring reinforced concrete, its step is as follows:

(1) measuring stake position;

(2) rig autofitting leveling;

(3) hole and stop boring to projected depth: long-spiral drilling machine blade middle part through hole one use the valve gauge tap through to the drill bit bottom, makes marks on the rig pylon and controls the pile degree of depth;

(4) the long screw drill rod vane tip adopts the flexible pipe of corresponding specification to be connected with the concrete carrier pipe, carries concrete at drilling rod blade middle part toward foot of hole with concrete transfer pump, and conveying concrete limit, limit up promotes drilling rod and reaches design height, stops to carry concrete;

(5) crane install reinforcing cage adopts vibrator and steel pipe linkage conveying steel cage to the projected depth pile;

(6) pile is laid in the rig displacement, so cycle operation.

Claims (1)

1, a kind of new technique of long screw driller for press pouring reinforced concrete is characterized in that: its step is as follows:

(1) measuring stake position;

(2) rig autofitting leveling;

(3) hole and stop boring to projected depth: long-spiral drilling machine blade middle part through hole one use the valve gauge tap through to the drill bit bottom, makes marks on the rig pylon and controls the pile degree of depth;

(4) the long screw drill rod vane tip adopts the flexible pipe of corresponding specification to be connected with the concrete carrier pipe, carries concrete at drilling rod blade middle part toward foot of hole with concrete transfer pump, and conveying concrete limit, limit up promotes drilling rod and reaches design height, stops to carry concrete;

(5) crane install reinforcing cage adopts vibrator and steel pipe linkage conveying steel cage to the projected depth pile;

(6) pile is laid in the rig displacement, so cycle operation.

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