CN204023559U - A kind of multiple holes grouting pipe shaped pile - Google Patents

A kind of multiple holes grouting pipe shaped pile Download PDF

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Publication number
CN204023559U
CN204023559U CN201420455289.1U CN201420455289U CN204023559U CN 204023559 U CN204023559 U CN 204023559U CN 201420455289 U CN201420455289 U CN 201420455289U CN 204023559 U CN204023559 U CN 204023559U
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CN
China
Prior art keywords
pile
slip casting
seed harvest
shaped
tube
Prior art date
Application number
CN201420455289.1U
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Chinese (zh)
Inventor
吕连勋
李廷春
张仕林
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山东科技大学
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Priority to CN201420455289.1U priority Critical patent/CN204023559U/en
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Publication of CN204023559U publication Critical patent/CN204023559U/en

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Abstract

The utility model discloses a kind of multiple holes grouting pipe shaped pile, it comprises slip casting pipe pile and Seed harvest two parts, wherein, slip casting pipe pile is provided with regularly arranged extravasating hole on the surface of common pile tube, the upper end of pile tube is provided with the high pressure termination of annular, and the lower end of pile tube is provided with obconic movable pile tip; Seed harvest is that pile tube is diffused into surrounding soil from extravasating hole and the slurries Seed harvest formed after slip casting.The utility model solves the process problem of soft foundation by the method for high-pressure slip-casting, on the one hand, improves the character of stake week soft stratum, improve the self-bearing ability of soft soil layer after grout hardens; On the other hand, Seed harvest becomes a part for pile body, adds the section area of stake and produces odd-shaped cross section effect, improves bearing capacity and the resistance to capsizing of pile body.A kind of multiple holes grouting pipe of the utility model shaped pile has good universality for all kinds of soft foundation, and construction technology is simple, pile quality is reliable, Foundation Treatment Effect is good.

Description

A kind of multiple holes grouting pipe shaped pile
Technical field
The utility model relates to soft foundation pile foundation reinforcement field, particularly relates to a kind of multiple holes grouting pipe shaped pile.
Background technology
Pile foundation, by the effective skin friction between pile body and soil layer or the interaction between foundation pile and bearing stratum, can bear the load that superstructure transmits.But, for the pole such as weak soil, recent fill soft foundation or liquefied foundation, complex geologic conditions and bearing capacity of foundation soil is low, existing pile foundation does not often reach the supporting capacity of designing requirement, cause the generation of the accident such as building inclination or roadbed settlement, badly influence the construction quality of engineering.The foundation treatment of weak soil or recent fill has become the large technical barrier built and must capture with transportation industry.
Before making the present invention, the patent No. be the Invention Announce of 201010215965.4 a kind of cast-in-place X-shaped large-diameter hollow concrete pile and construction method thereof.This to the raising effect of frictional force in side-pile and the special-shaped effect of X-shaped cross section, improves Its ultimate bearing capacity and the vertical bearing capacity of stake by stake core soil.But contact area during this pile driving construction between stake mould and soil layer is very large, cause the driving resistance in immersed tube and tube drawing process and drawing resistance very large, and during the construction of stake mould, the disturbance of soil around pile is serious, has considerable influence to pile quality.
Application number a kind of pile for prestressed pipe with ribbing that has been the Invention Announce of 201310603224.7 and preparation method thereof, bore and plant method construction technology.This pile-type, by improving the bearer properties of single end bearing and side resistance, significantly improves the ultimate bearing capacity of pile for prestressed pipe.But need during this pile driving construction first to be constructed a stake holes by drilling equipment, and the distortion of soft foundation stake holes is larger and uncontrollable, difficulty of construction when making this pile-type be applicable to soft soil layer is large, pile-forming effect is poor.
The patent No. be 201020700179.9 utility model disclose a kind of prestressing steel pipe concrete pipe pile.This pile-type improves the performance of concrete tubular pile itself by the improvement structure of stake or the layout of presstressed reinforcing steel, but do not consider pile body and soil layer interact and section form on the impact of stake integrated carrying ability, supporting capacity when being applied to pole soft foundation is often inadequate.
To make progress on Soft Soil Subgrade Treatment Techniques, except will ensureing the construction quality of pile foundation, also will consider the characteristic of all kinds of soft soil layer, develop a kind of Novel pile being more suitable for reinforced soft soil ground.
Summary of the invention
For the problems referred to above existed in Soft foundation treatment, the utility model discloses a kind of Novel pile of applicable reinforced soft soil ground, be specially a kind of multiple holes grouting pipe shaped pile.
In order to achieve the above object, the structure of a kind of multiple holes grouting pipe of the utility model shaped pile is: it is made up of slip casting pipe pile and Seed harvest two parts, it is characterized in that, described slip casting pipe pile is provided with regularly arranged extravasating hole on the surface of common pile tube, the upper end of pile tube is provided with the high pressure termination of annular, and the lower end of pile tube is provided with obconic movable pile tip; Described Seed harvest is the slurries Seed harvest around slip casting pipe pile.
Described extravasating hole is arranged in the outer wall of slip casting pipe pile twist, is the circular port of through outer wall, and bore dia is 20mm ~ 30mm; Distance between extravasating hole and reinforcing bar meets the requirement of Minimum Concrete Protective Coating Thickness.
Described high pressure termination is made up of metal material, and the internal diameter of high pressure termination is identical with external diameter with the internal diameter of pile tube outer wall respectively with external diameter; High pressure termination can be bolted or Flange joint is connected with the high-pressure slip-casting equipment of outside.
Described movable pile tip is the precast pile tip of concrete material, and the outer wall of itself and slip casting pipe pile is separated from each other.
The forming pile pinciple of a kind of multiple holes grouting pipe of the utility model shaped pile is: after slip casting pipe pile navigates to design attitude, the inner chamber injection water under high pressure mud of Grouting Pipe to slip casting pipe pile is connected by high pressure termination, be exuded to soft soil layer around by extravasating hole after cement grout is full of inner chamber, the Seed harvest formed after grout hardens and slip casting pipe pile are combined as a whole and jointly form multiple holes grouting pipe shaped pile.
In order to ensure the intensity of Seed harvest, described cement grout should select portland cement or Portland cement, and the proportion of slurries should be 1.2 ~ 1.5.
Gush out from stake week earth's surface to prevent cement paste in slip casting process, needing the part soil-layer displacement on all for stake earth's surfaces before slip casting is concrete material, and concrete operations are: first, the soil layer on excavation stake week earth's surface, excavation radius is 500mm ~ 800mm, and cutting depth is 500mm ~ 800mm; Then, place reinforcing cage, build the thick pea gravel concreten of 300mm ~ 500mm, treat that concrete curing completes and carry out slip casting operation again; Finally, pea gravel concreten is built to design elevation.
The piling method of a kind of multiple holes grouting pipe of the utility model shaped pile, specifically comprises the following steps:
(1) adopt vibration sinking tube mode that slip casting pipe pile is squeezed into soft soil layer behind location, stake position;
(2) excavating the soil layer on stake week earth's surface, is pea gravel concreten by part soil-layer displacement;
(3) step (1) ~ (2) are repeated, until complete immersed tube, the displacement work of all piles position;
(4) connect high-pressure slip-casting equipment by high pressure termination, the inner chamber to slip casting pipe pile injects water under high pressure mud;
(5), after the slip casting operation of all piles position completes, pea gravel concreten is built respectively to design elevation.
A kind of multiple holes grouting pipe of the utility model shaped pile, solved the process problem of soft foundation by the method for pile foundation associating high-pressure slip-casting, its advantage is:
(1) improve the character of soft soil layer after grout hardens, improve the supporting capacity of ground;
(2) Seed harvest becomes a part for pile body, adds the section area of stake, improves level and the vertical bearing capacity of stake;
(3) consider the impact of odd-shaped cross section effect, increase the contact area between pile body and soil layer, improve the resistance to capsizing of bearing capacity of single pile and stake;
(4) the present invention is applicable to all kinds of soft foundation, has good universality, and in addition, construction technology of the present invention is simple, pile quality is reliable, Foundation Treatment Effect is good.
Accompanying drawing explanation
Fig. 1 is structure and the piling method schematic diagram of a kind of multiple holes grouting pipe of the utility model shaped pile;
Fig. 2 is slip casting pipe pile schematic cross-sectional view of the present utility model;
Fig. 3 is reinforcement placement of the present utility model and extravasating hole position view.
Marginal data: 1-slip casting pipe pile; 2-Seed harvest; 3-extravasating hole; 4-high pressure termination; 5-movable pile tip; 6-pea gravel concreten; 7-outer wall; 8-inner chamber; 9-indulges muscle; 10-stirrup.
Detailed description of the invention
The utility model provides a kind of multiple holes grouting pipe shaped pile, for making the purpose of this utility model, technical scheme and effect clearly, clearly, is described in detail to detailed description of the invention of the present utility model below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, a kind of multiple holes grouting pipe shaped pile of the present utility model, it comprises slip casting pipe pile 1 and Seed harvest 2 two parts, wherein, slip casting pipe pile 1 is provided with regularly arranged extravasating hole 3 on the surface of common pile tube, the upper end of pile tube is provided with the high pressure termination 4 of annular, and the lower end of pile tube is provided with obconic movable pile tip 5; Seed harvest 2 is that slip casting pipe pile 1 is diffused into surrounding soil from extravasating hole 3 and the slurries Seed harvest formed after slip casting.
Concrete, extravasating hole 3 is arranged in the outer wall 7 of slip casting pipe pile 1 twist, is the circular port of through outer wall 7; High pressure termination 4 is made up of metal material, and its internal diameter and external diameter are identical with external diameter with the internal diameter of pile tube outer wall 7 respectively, and high pressure termination 4 can be bolted or Flange joint is connected with the high-pressure slip-casting equipment of outside; Movable pile tip 5 is precast pile tips of concrete material, and the outer wall 7 of itself and slip casting pipe pile 1 is separated from each other.
As shown in Figure 3, the spacing of extravasating hole 3 and arrangement mode are determined according to the layout of indulging muscle 9 and stirrup 10, and the diameter of extravasating hole 3 is 20mm ~ 30mm; Distance between extravasating hole 3 and reinforcing bar meets the requirement of Minimum Concrete Protective Coating Thickness.
The forming pile pinciple of a kind of multiple holes grouting pipe of the utility model shaped pile is: after slip casting pipe pile 1 navigates to design attitude, connect outside grouting equipment by high pressure termination 4 and carry out slip casting to the inner chamber 8 of slip casting pipe pile 1, after high pressure cement slurries are full of inner chamber 8, soft soil layer is around exuded to by extravasating hole 3, form Seed harvest 2 after cement grout sclerosis, Seed harvest 2 and slip casting pipe pile 1 are combined as a whole and jointly form multiple holes grouting pipe shaped pile.
Gush out from stake week earth's surface to prevent slurries in slip casting process, needing the part soil-layer displacement on all for stake earth's surfaces before slip casting is concrete material, and concrete operations are: first, the soil layer on excavation stake week earth's surface, excavation radius is 500mm ~ 800mm, and cutting depth is 500mm ~ 800mm; Then, place reinforcing cage, build the thick pea gravel concreten of 300mm ~ 500mm 6, treat that concrete curing completes and carry out slip casting operation again; Finally, pea gravel concreten 6 to design elevation is built.
The piling method of a kind of slip casting shaped pile of the utility model, specifically comprises the following steps:
(1) adopt vibration sinking tube mode that slip casting pipe pile 1 is squeezed into soft soil layer behind location, stake position;
(2) excavating the soil layer on stake week earth's surface, is pea gravel concreten 6 by part soil-layer displacement;
(3) step (1) ~ (2) are repeated, until complete immersed tube, the displacement operation of all piles position;
(4) connect high-pressure slip-casting equipment by high pressure termination 4, the inner chamber 8 to slip casting pipe pile 1 injects water under high pressure mud;
(5), after the slip casting operation of all piles position completes, pea gravel concreten 6 to design elevation is built respectively.

Claims (3)

1. a multiple holes grouting pipe shaped pile, is characterized in that, it is made up of slip casting pipe pile and Seed harvest two parts; Described slip casting pipe pile is provided with regularly arranged extravasating hole on the surface of common pile tube, and the upper end of pile tube is provided with the high pressure termination of annular, and the lower end of pile tube is provided with obconic movable pile tip; Described Seed harvest is the slurries Seed harvest around slip casting pipe pile.
2. a kind of multiple holes grouting pipe shaped pile as claimed in claim 1, it is characterized in that, the extravasating hole of described slip casting pipe pile is arranged in the outer wall of slip casting pipe pile twist, and be the circular port of through outer wall, bore dia is 20mm ~ 30mm.
3. a kind of multiple holes grouting pipe shaped pile as claimed in claim 1, it is characterized in that, the high pressure termination of described slip casting pipe pile is made up of metal material, and the internal diameter of high pressure termination is identical with external diameter with the internal diameter of slip casting pipe pile outer wall respectively with external diameter.
CN201420455289.1U 2014-08-13 2014-08-13 A kind of multiple holes grouting pipe shaped pile CN204023559U (en)

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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104179174A (en) * 2014-08-13 2014-12-03 山东科技大学 Porous grouted pipe special-shaped pile and pile-forming method
CN105804072A (en) * 2016-05-06 2016-07-27 同济大学 Slip casting pipe device, Y-shaped abnormal-shape pile with device in prefabricated manner and slip casting method of device
CN106284447A (en) * 2016-09-27 2017-01-04 西安科技大学 A kind of steel pipe grouting behind shaft or drift lining preloading underpinning pile construction method
CN109518685A (en) * 2018-11-14 2019-03-26 天津中海水利水电工程有限公司 A kind of prefabricated pilework and its construction method under water

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104179174A (en) * 2014-08-13 2014-12-03 山东科技大学 Porous grouted pipe special-shaped pile and pile-forming method
CN105804072A (en) * 2016-05-06 2016-07-27 同济大学 Slip casting pipe device, Y-shaped abnormal-shape pile with device in prefabricated manner and slip casting method of device
CN106284447A (en) * 2016-09-27 2017-01-04 西安科技大学 A kind of steel pipe grouting behind shaft or drift lining preloading underpinning pile construction method
CN109518685A (en) * 2018-11-14 2019-03-26 天津中海水利水电工程有限公司 A kind of prefabricated pilework and its construction method under water

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Granted publication date: 20141217

Effective date of abandoning: 20160511