CN201089938Y

CN201089938Y - Pile-forming sink pipe for club-footed pile

Info

Publication number: CN201089938Y
Application number: CNU2007200149685U
Authority: CN
Inventors: 杨国龙; 徐志明
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-29
Filing date: 2007-09-29
Publication date: 2008-07-23
Anticipated expiration: 2017-09-29

Abstract

The utility model discloses building foundation construction equipment, in particular a piling immersed pipe for a pedestal pile used for building foundation construction. The utility model is formed by a hollow pipe shaped pipe body, a bottom circumferentially provided with at least two guide vanes and a metal pile head, the bottom is arranged on the lower end of the pipe body, the metal pile head is arranged inside the lower end of the bottom, wherein, the section of the pipe body is of a square, the pipe body has a multi-section type structure, the sections are in threaded connection, the section of a joint between two sections has a structure with a square exterior and a round interior, the front end of the metal pile head is provided with a metal detecting stick. The utility model assures the proportion relation between the pipe body and the inner diameter of the bottom, has a simple and rational structure and strong practicability, and ensures that the single pile bearing force achieves the design standard; the utility model produces the pipe body into a multi-section type, which decreases the processing difficulty and the cost of the pile driving immersed pipe; the front end of the metal pile head is provided with one metal detecting stick, so the utility model can be used as a hard clay layer detector, and can also extrude out a very small space in the hard clay layer to contribute to the metal pile head to be extracted from the immersed pipe.

Description

A kind of pile-formation sunken tube of expanded bore pile

Technical field

The utility model relates to a kind of construction foundation working equipment, particularly a kind of construction foundation working pile-formation sunken tube of expanded bore pile.

Background technology

In the pile foundation engineering of soft foundation, generally adopt tube-sinking cast-in-situ pile, three kinds of preformed pile and large diameter bored piles at present.And what be most widely used is tube-sinking cast-in-situ pile, when executing immersed tube is passed the weak soil layer, takes out metal pile head after reaching the design elevation hardpan, and the bottom-expanding equipment of expanded bore pile being lowered in the immersed tube cuts the earth, fetches earth again forms the expanded bore pile base cavity pocket.

The pipe shaft of present piling immersed tube is all-in-one-piece structure, and pipe shaft is very long, and processing is difficulty very, and the cost height, can't detect immersed tube when present immersed tube is constructed at the scene and whether arrive hardpan.Also there is at present a kind of immersed tube that use the coastal area that is suitable for, between the segmentation pipe shaft of this immersed tube by being threaded, but find that in practice the connection of thread between this immersed tube multisection type pipe shaft causes the junction insecure because falling into of soil arranged after use a period of time especially easily, and then influence the stability of entire equipment.For these reasons, immersed tube in the past has further improved necessity.

The utility model content

The problem that the utility model exists at above-mentioned prior art, and provide a kind of pile-formation sunken tube of expanded bore pile, purpose is simplified structure, increase bearing capacity of single pile, reduce cost, pipe shaft is connected firmly, and can detect immersed tube and arrive hardpan, convenient construction, and immersed tube is easy to process.

The utility model realizes that the technical scheme of purpose is: a kind of pile-formation sunken tube of expanded bore pile, it is by the pipe shaft of hollow tubular, along circumferentially the bottom and the metal pile head of at least two guide vanes of setting constitute, the pipe shaft lower end is located in the bottom, metal pile head is arranged on the inside, lower end of bottom, wherein the cross section of pipe shaft is square, the front end of metal pile head is provided with a metal probe, pipe shaft is a multi-segment structure, by rivet, the cross section of junction is the structure of square-outside and round-inside shape between adjacent two sections pipe shafts between each section.

The bottom of described bottom is provided with pin-and-hole.

The utility model compared with prior art adopts rivet owing between the segmentation pipe shaft, so the junction firmly, reliably.And having guaranteed the proportionate relationship of pipe shaft and bottom internal diameter, it is simple and reasonable, practical, makes bearing capacity of single pile reach design standard.The utility model is made multisection type with pipe shaft, reduced piling immersed tube difficulty of processing and cost, be provided with a metal probe at the front end of metal pile head, it both can make ground hardpan survey meter, can in hardpan, extrude a very little space again, be beneficial to metal pile head and in immersed tube, extract.

Below in conjunction with the drawings and specific embodiments the utility model is described in further details.

Description of drawings

Fig. 1 is a main TV structure schematic diagram of the present utility model.

Among the figure 1, pipe shaft; 2, bottom; 3, guide vane; 4, metal pile head; 5, pin-and-hole; 6, metal probe; 7, rivet.

The specific embodiment

Below embodiment of the present utility model is described in detail in conjunction with the accompanying drawings, but protection domain of the present utility model is not limit by embodiment.

As shown in Figure 1, the pile-formation sunken tube of a kind of expanded bore pile of the utility model, it is by the pipe shaft 1 of hollow tubular, along circumferentially the bottom 2 and the metal pile head 4 of at least two guide vanes 3 of setting constitute, pipe shaft 1 lower end is located in bottom 2, metal pile head 4 is arranged on the inside, lower end of bottom 2, and wherein the cross section of pipe shaft 1 is square, and pipe shaft 1 is a multi-segment structure, by rivet 7 riveted joints, the cross section of junction is the structure of square-outside and round-inside shape between adjacent two sections pipe shafts 1 between each section.The bottom of bottom 2 is provided with to be convenient to combine and the pin-and-hole 5 of throwing off usefulness with its matching used metal pile head 4.The front end of metal pile head 4 is provided with a metal probe 6.

Claims

1. the pile-formation sunken tube of an expanded bore pile, it is by the pipe shaft (1) of hollow tubular, along circumferentially the bottom (2) and the metal pile head (4) of at least two guide vanes of setting (3) constitute, pipe shaft (1) lower end is located in bottom (2), metal pile head (4) is arranged on the inside, lower end of bottom (2), wherein the cross section of pipe shaft (1) is square, the front end of metal pile head (4) is provided with a metal probe (6), it is characterized in that pipe shaft (1) is a multi-segment structure, by rivet (7) riveted joint, the cross section of junction is the structure of square-outside and round-inside shape between adjacent two sections pipe shafts (1) between each section.

2. the pile-formation sunken tube of expanded bore pile according to claim 1 is characterized in that the bottom of described bottom (2) is provided with pin-and-hole (5).