CN201121326Y

CN201121326Y - Novel immersed pipe

Info

Publication number: CN201121326Y
Application number: CNU2007200149187U
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: 2008-09-24
Anticipated expiration: 2017-09-29

Abstract

The utility model discloses a pile-forming device of a sinking pipe prefabricated steel concrete expanded bore pile, in particular relates to a sinking pipe, which is a matchable sinking pipe of various sinking pipe prefabricated steel concrete expanded bore piles. The sinking pipe is composed of a hollow and tubular pipe body and a bottom part. The bottom part is arranged at the lower end of the pipe body. The cross-section of the pipe body is circular, the pipe body is in a multi-part type structure, and two adjacent part of pipe bodies are connected through screw thread. The upper side of the outer wall of the bottom part is provided with a sealing ring, the lower part of the pipe body is sheathed with a sealing ring, and the diameter of the sealing ring arranged at the upper end is greater than the diameter of the sealing ring arranged at the lower end. Compared with the prior art, the sinking pipe is low in production cost and simple in technology. The pipe body of the sinking pipe can be made into an integrated type as well as a multi-part type, and the manufacturing difficulty and cost of the sinking pipe are lowered.

Description

Novel immersed tube

Technical field

The utility model relates to a kind of pile-forming equipment of pipe sinking prefabricated steel concrete club-footed pile, and particularly a kind of construction piling immersed tube is the supporting immersed tube of various precast reinforced concrete piles.

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.

Present immersed tube only is fit to use interiorly, can't use in the coastal area, because after metal pile head takes out, formed a conical cavity, outside the pipe and between in the pipe pressure reduction is arranged, mud above the hardpan easily enters in the conical cavity, make the expansion basic skill or training do and to carry out, cause immersed tube to be restricted in the use of coastal area.The pipe shaft of immersed tube is all-in-one-piece structure at present, and pipe shaft is very long, and processing is difficulty very, and the cost height.Also have a kind of immersed tube with guide vane at present, this immersed tube bearing capacity of single pile is strong, but because this immersed tube is provided with guide vane, causes the equipment cost height, complex manufacturing, and also the weld of guide vane and immersed tube is damaged easily.For these reasons, immersed tube in the past has further improved necessity.

The utility model content

The utility model is at the problem that above-mentioned prior art exists, provide a kind of rational in infrastructure, cost of production is low, production technology simple and be fit to the immersed tube that use the coastal area.

The utility model realizes that the technical scheme of purpose is: novel immersed tube, it is made of the pipe shaft and the bottom of hollow tubular, the pipe shaft lower end is located in the bottom, the cross section of pipe shaft is circular, pipe shaft is a multi-segment structure, is threaded between adjacent two sections pipe shafts, and the top of bottom outer wall is provided with sealing ring, the bottom of pipe shaft is set with sealing ring, and the diameter of the sealing ring on being arranged on is greater than the diameter of the sealing ring that is arranged on the lower end.

Described sealing ring is made of a metal ring body and a circle flange of being located at its lower end.

The utility model compared with prior art owing to removed these parts of guide vane, has reduced cost of production, simplified production technology, 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.Owing on the outer wall of pipe shaft, be provided with sealing ring, after taking out, metal pile head stopped that mud enters in the conical cavity, prolonged time that mud enters cone space, make and expand the basic skill or training and do and can proceed, make immersed tube also be adapted at the coastal area and use, pipe shaft of the present utility model both can make one all-in-one-piece, also can make multisection type, reduced immersed tube difficulty of processing and cost, the utility model is implemented in engineering easily, is beneficial to and applies.

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; 4, metal pile head; 5, sealing ring; 6, sealing ring.

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 utility model immersed tube, it is made of the pipe shaft 1 and the bottom 2 of hollow tubular, pipe shaft 1 lower end is located in bottom 2, and the cross section of pipe shaft 1 is circular, and pipe shaft 1 is a multi-segment structure, be threaded between adjacent two sections pipe shafts 1, the top of bottom 2 outer walls is provided with sealing ring 6, and the bottom of pipe shaft is set with sealing ring 5, and the diameter of the sealing ring 5 on being arranged on is greater than the diameter of the sealing ring 6 that is arranged on the lower end.Sealing ring is made of a metal ring body and a circle flange of being located at its lower end.

Claims

1, novel immersed tube, it is characterized in that it is made of pipe shaft (1) and bottom (2) of hollow tubular, pipe shaft (1) lower end is located in bottom (2), the cross section of pipe shaft (1) is circular, pipe shaft (1) is a multi-segment structure, is threaded between adjacent two sections pipe shafts (1), and the top of bottom (2) outer wall is provided with sealing ring (6), the bottom of pipe shaft is set with sealing ring (5), and the diameter of the sealing ring (5) on being arranged on is greater than the diameter of the sealing ring that is arranged on the lower end (6).

2, immersed tube according to claim 1 is characterized in that described sealing ring (5,6) is made of a metal ring body and a circle flange of being located at its lower end.