CN200978426Y

CN200978426Y - Piling sinking pipe for club-footed pile

Info

Publication number: CN200978426Y
Application number: CN 200620153463
Authority: CN
Inventors: 徐志明; 王国奋
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-05
Filing date: 2006-12-05
Publication date: 2007-11-21
Anticipated expiration: 2016-12-05

Abstract

The utility model discloses a construction equipment of building foundation, particularly a pile-driving expanding bottom pile for building foundation construction which comprises a hollow pipe shaped pipe body, bottom which is peripherally provided with at least two guide wings and metal pile head, the bottom is positioned on the lower portion of the pipe body, the metal pile head is positioned in the lower portion of the bottom, wherein cross section of the pipe body has square shape, the pipe body has structure of multi segments, two segments are connected by screws, cross section in connecting part of the two next pipe segments has shape of square outside and round inside, front portion of the metal pile head is provided with a stick of metal sonde. The utility model ensures portion of the pipe body and inner diameter of the bottom and has advantages of simple structure and good utility to achieve devising standard of single pile bearing force. The utility model divides the pipe body into multi segments, lowers processing difficult of the pile-sinking pipe and cost, the metal sonde which is positioned in the front portion of the metal pile head is capable of taking as stiff stratum meter and compresses a small space in stiff stratum to facilitate the metal pile head extracted from the 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.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 has arrived hardpan, convenient construction and a kind of pile-formation sunken tube of expanded bore pile, purpose are provided is simplified structure, increase bearing capacity of single pile, reduce cost, can detect immersed tube, 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, and pipe shaft is a multi-segment structure, between each section for being threaded, the cross section of junction is the helicitic texture of square-outside and round-inside shape between two sections, and the front end of metal pile head is provided with a metal probe.

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

The utility model has compared with prior art guaranteed the proportionate relationship of pipe shaft and bottom internal diameter, and 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.

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, for being threaded, the cross section of junction is the helicitic texture 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, a kind of pile-formation sunken tube of expanded bore pile, it is characterized in that 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, pipe shaft (1) is a multi-segment structure, between each section for being threaded, the cross section of junction is the helicitic texture of square-outside and round-inside shape between adjacent two sections pipe shafts (1), and the front end of metal pile head (4) is provided with a metal probe (6).

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).