CN2661771Y

CN2661771Y - Reinforced concrete hollow pile technology adopting vibrating tube-sinking cast-in-situ ram machine

Info

Publication number: CN2661771Y
Application number: CN 200320115281
Authority: CN
Inventors: 郭兆泉; 曹沂风
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-12-05
Filing date: 2003-12-05
Publication date: 2004-12-08
Anticipated expiration: 2013-12-05

Abstract

The utility model relates to a technique of hollow reinforcement and concrete pile cast by vibrating driven cast-in-place pile driver, which is characterized in that a hammer (4) of the vibrating driven cast-in-place pile driver is provided with a jig (1) which can clip an inner pipe (3) and an outer pipe (2) at the same time; a steel reinforcement cage (5) is arranged between the inner pipe and the outer pipe; the jig can either be mechanical or hydraulic, which is mainly used to clip the inner pipe and the outer pipe for double-pipe piling, so as to enable construction of the hollow reinforcement and concrete pile. The utility model has the advantage that the frictional resistance of the pile surface is increased without destroying the original structure of the soil layers; the amount of concrete for use is reduced due to the use of hollow piles. Therefore, the utility model has huge economic and social benefit.

Description

Adopt vibrator pipe sinking cast-in-place pile machine cast-in-situ reinforced concrete hollow stake technology

Technical field: the utility model relates to infrastructure pile foundation construction field, particularly adopts vibrator pipe sinking cast-in-place pile machine cast-in-situ reinforced concrete hollow stake technology.

Background technology: the existing vibrator pipe sinking cast-in-place pile machine that uses has the advantage that speed of application is fast, cost is low in the building pile foundation construction.But pressing a prefabricated concrete stake point extruding earth to form because its immersed tube pore-forming is the tube bottom, it has destroyed the original structure of soil layer, and the surperficial frictional resistance of cast-in-situ steel reinforced concrete pile body is reduced.And the present vibrator pipe sinking cast-in-place pile machine solid pile of can only constructing, the design end load of solid pile has only utilized about 20% of strength of the mixing pile, that is to say that strength of the mixing pile has substantially exceeded the design bearing strength, has caused concrete a large amount of waste.Though Static pressure pile driver has overcome the above-mentioned some shortcomings that the vibrator pipe sinking cast-in-place pile machine exists, the prefabricated reinforced concrete hollow pile cost of its construction is too high.

Summary of the invention: at the deficiency of above-mentioned prior art existence, the utility model provides a kind of employing vibrator pipe sinking cast-in-place pile machine, the technology of construction cast-in-situ reinforced concrete hollow stake, it had not both destroyed former soil layer structure, the pile body surface frictional resistance is increased, be again hollow pile simultaneously, saved the concrete use amount, have huge economic benefit and social benefit.

The utility model construction technology mainly is on vibrator pipe sinking cast-in-place pile machine tup top, is provided with anchor clamps, these anchor clamps can be mechanical type and also can be oil hydraulic type, its predominant use is pipe and an outer tube in clamping, and implements two-tube piling, to reach the purpose of construction concrete hollow pile.

The anchor clamps of interior pipe of one clamping simultaneously and outer tube are arranged on the above-mentioned hammer body, and reinforcing cage is arranged between interior pipe and the outer tube.

Described anchor clamps also can be fixedly connected on hammer body top, pipe in only clamping; Perhaps on the outer tube that is positioned at hammer body top or bottom, be connected with pipe by wearing pin.

The described shape of cross section of wearing pin can be garden shape, rectangle, I-shaped.

The shape of cross section of described outer tube except that circle, also square, rectangle, triangle.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the special-shaped hollow pile body section schematic diagram with the construction of this device.

Fig. 3 is the schematic diagram of the hollow pedestal pile that adopts this device to construct to obtain.

The specific embodiment: reach embodiment in conjunction with the accompanying drawings and describe, but protection domain of the present utility model is not limited to embodiment and accompanying drawing thereof.

Among the figure, the 1st, anchor clamps, the 2nd, outer tube, the 3rd, interior pipe, the 4th, hammer body, the 5th, reinforcing cage, the 6th, the hollow part of expanded bore pile, the 7th, the concrete enlarged footing position of expanded bore pile.

For example, anchor clamps 1 also can not clamping outer tube and directly be connected hammer body top, and only internally a pipe clamp tightly gets final product.

At the hammer body 4 of vibrator pipe sinking cast-in-place pile machine partly, configuration one cover can clamping in the anchor clamps 1 of pipe 3 and outer tube 2, take two-tube construction.When needing to put reinforcing cage 5 after immersed tube puts in place, press a button and handle anchor clamps 1 and open, put down reinforcing cage between two-tube after, press a button again and handle pipe and outer tube in the clamp.Before the method for perfusion concrete is still same, or Commercial Concrete direct-furnish charging aperture.So just can adopt the stake of vibrator pipe sinking cast-in-place pile machine construction cast-in-situ reinforced concrete hollow.

The utility model adopts the cast-in-situ reinforced concrete hollow stake of not only constructing of vibrator pipe sinking cast-in-place pile machine, can also construct stake of cast-in-situ reinforced concrete hollow abnormity and cast-in-situ reinforced concrete hollow abnormity expanded bore pile, and this is that any machine can not be constructed in the past.Its special-shaped hollow pile body can be multiple abnormity.As other special-shaped pile body forms such as circular, square, rectangle, triangles.It is long-pending that pile body shaped cross figure shown in Figure 2, this special-shaped pile body have increased pile body surface, so frictional resistance increases.With 500 footpaths is example: surface area increases 45%, and the concrete amount only increases 20%.Hollow part joint concrete amount reaches 37%.

Construction technology that employing the utility model proposes and equipment also can carry out expanded bore pile construction, and it expands end principle is to add multi-disc activity steel plate at 2 ends of outer tube, and two-tube bottom sealing during immersed tube can be opened during tube pulling behind the perfusion concrete automatically; And can utilize this device instead to insert and expand at the end, 0.5～1 meter of tube pulling is instead inserted 2～3 times, pours into 0.1m ³Above concrete, this hollow pile bearing capacity can improve 60%.

Claims

1, a kind of employing vibrator pipe sinking cast-in-place pile machine cast-in-situ reinforced concrete hollow stake technology, it comprises anchor clamps (1), outer tube (2), interior pipe (3), stake machine hammer body (4), reinforcing cage parts such as (5) is characterized in that: the anchor clamps (1) of managing (3) and outer tube (2) in the clamping are simultaneously arranged on the hammer body (4), and reinforcing cage (5) is arranged between interior pipe and the outer tube.

2, cast-in-situ reinforced concrete hollow stake technology according to claim 1, it is characterized in that: anchor clamps (1) also can be fixedly connected on hammer body top, pipe in only clamping; Perhaps on the outer tube that is positioned at hammer body top or bottom, be connected with pipe by wearing pin.

3, cast-in-situ reinforced concrete hollow stake technology according to claim 1 is characterized in that: the shape of cross section of wearing pin can be garden shape, rectangle, I-shaped.

4, cast-in-situ reinforced concrete hollow stake technology according to claim 1 is characterized in that: the shape of cross section of outer tube (2) except that circle, also square, rectangle, triangle.