CN112127359A - Special-shaped pile cast-in-place pile forming method using waste tires as templates - Google Patents
Special-shaped pile cast-in-place pile forming method using waste tires as templates Download PDFInfo
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- CN112127359A CN112127359A CN202010862652.1A CN202010862652A CN112127359A CN 112127359 A CN112127359 A CN 112127359A CN 202010862652 A CN202010862652 A CN 202010862652A CN 112127359 A CN112127359 A CN 112127359A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
- E02D5/385—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with removal of the outer mould-pipes
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Abstract
The invention relates to a method for forming a special-shaped pile in situ by using waste tires as templates, which is characterized in that the waste tires with the same or different specifications are vertically stacked and combined at the same or different intervals to form the special-shaped pile with a variable section.
Description
Technical Field
The invention relates to a method for forming a special-shaped pile in situ by using a waste tire as a template, belonging to the technical field of pile foundation engineering and foundation treatment.
Background
The pile foundation is a foundation form with high bearing capacity, wide application range and long history, can bear vertical load, can bear horizontal load, can resist uplift load and can bear vibration load, and is a deep foundation form with the most wide application. The pile is used as the foundation member of pile foundation and is a force transferring member with certain rigidity and bending resistance to transfer all or part of the load of building to foundation soil. Increase pile footpath or pile length can improve pile foundation whole bearing characteristic, but the way of leaning on increasing the material with improvement bearing capacity is neither economical, increases the construction degree of difficulty again, consequently seeks the unit material high-usage, realizes high bearing capacity, low cost, and the stability of ground can obviously increase novel stake type, for example special-shaped pile, becomes one of the focus and difficult point problem that geotechnical engineering field concerns extensively.
In various patents, novel special-shaped piles are developed from the aspects of the cross section shape or the side surface of a pile body, the grouting mode and the like. For example, the invention with patent number 201010215965.4 discloses a cast-in-place X-shaped large-diameter hollow concrete pile and a construction method thereof. The invention with the application number of 201310603224.7 discloses a ribbed prestressed pipe pile and a manufacturing method and a drilling and planting method construction process thereof. The invention with application number 201410396574.5 discloses a special-shaped pile with a porous grouting pipe, wherein grout holes are regularly arranged on the surface of a common pipe pile, and the grout is diffused from the grout holes to the surrounding soil body through high-pressure grouting to form a grout stone body, so that the special-shaped pile is formed. On the other hand, the production of junked tires is rapidly increasing every year around the world, and the junked tires piled up like a mountain are called "black pollution in the world" because of large inventory and rapid increase in quantity, and are not easily degraded in natural environment and difficult to handle. The stacking of the waste tires not only occupies land resources, but also has limited amount of accommodation and treatment, and the waste tires stacked in the open air are easy to cause fire and serious air pollution. How to deal with the huge amount of waste tires has become a pressing and serious international socioeconomic and environmental problem.
The search shows that the prior patent uses the waste tires in the pile forming method, for example, Chinese patent with application number of 201410153840.1, named as ' tire-gravel drainage pile composite foundation treatment method ' discloses ' fixing the sleeve; driving the sleeve into the soil to a predetermined design depth; placing a tire in a sleeve, then throwing broken stones into the inner side of the tire, pulling the sleeve to a set height, and discharging the broken stones in the sleeve into soil by compressed air; and (5) vibrating and pulling the sleeve out, and pulling the sleeve out to the ground to form the pile. However, the invention mainly utilizes the tire to provide radial restraint for the inner gravel, limits the deformation of the inner gravel pile body, particularly the upper pile body, does not depend on the action of a tire template, and does not belong to the category of special-shaped piles. The Chinese patent with the application number of 201911086373.4 entitled waste tire thin-wall hollow pile for processing soft foundation and construction method thereof discloses that the hollow pile comprises a hollow pile top cover, waste tire crown and cement slurry, the waste tire crown is stacked one by one and fixedly connected with the cement slurry, and the top of the hollow pile is provided with a hollow pile top cover. However, the patent mainly develops a sleeve mould according to the specification of the waste tires, the complete waste tire tread is cut, the tire crown part is reserved, each tire crown is cut into two halves, a piston is pressed into a sleeve film, grouting is carried out to form a hollow pile, the tires are used as the main body material of the hollow pile, the hollow pile is not used for template action, and the special-shaped pile is not involved. The application number is 201910777633.6, the name is 'road bridge transition section roadbed structure based on waste tires and construction method' and discloses 'EPS ultra-light filler is filled in a cavity of a pile body structure formed by waste tires and a gap between the pile body structure and a steel casing in a layered mode', but the pile body structure is formed by a plurality of waste tires with the same specification from top to bottom, the pile body structure has the effect of serving as a template, but has the same specification and single form, and special-shaped piles are not involved.
Therefore, it is necessary to develop a method for forming a special-shaped pile by fully utilizing a tire as a template.
Disclosure of Invention
The invention provides a method for forming a special-shaped pile in situ by using waste tires as templates, which forms the special-shaped pile with a variable section by vertically superposing and combining the waste tires with different sizes and specifications or combining the waste tires with different intervals, thereby improving the bearing capacity of the whole pile body and solving the problem of solid waste treatment.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a method for forming a special-shaped pile in situ by using waste tires as templates comprises the following steps:
firstly, keeping a pouring site flat, measuring and setting out, and determining a pile position;
secondly, erecting a guide frame at the determined pile position, wherein the vertical deflection angle of the guide frame and the ground is less than or equal to 1.5%, one side of the guide frame is provided with hoisting equipment, and the hoisting equipment is used for installing a sinking pipe with a valve pile tip at the determined pile position, wherein the sinking pipe is arranged in a hollow circular ring shape;
thirdly, starting a vibrating machine, applying pressure to the immersed tube, and immersing the immersed tube to a designed depth;
fourthly, selecting a plurality of waste tires, sequentially stacking the waste tires, and connecting the stacked waste tires in series through at least four positioning rods, wherein the distances between the adjacent waste tires which are sequentially stacked are equal or unequal;
fifthly, the hoisting equipment places the waste tires after being connected in series in the immersed tube, and the position of the waste tires is adjusted;
sixthly, starting the vibrating machine again, performing pipe drawing operation on the immersed tube, and pouring sand stone materials, cement slurry, concrete or flowing solidified silt soil in the annular hollow part of the immersed tube;
seventhly, forming a special-shaped pile after the immersed tube is completely pulled out;
eighthly, after the special-shaped pile is formed for 24 hours, excavating pile core soil and pile periphery soil on the surface of the foundation, and pouring concrete in an excavated area to form a pile cover plate;
as a further preferred aspect of the present invention, the section of the sinking tube is a hollow circular ring, the hollow size of the sinking tube is matched with the selected waste tire, that is, the hollow diameter is close to and smaller than the minimum inner diameter of the waste tire, and the outer diameter of the sinking tube is close to and larger than the maximum outer diameter of the waste tire;
as a further preference of the invention, in the fourth step, at least four positioning holes are formed in the bead of each waste tire, the positioning rods penetrate through the positioning holes to realize serial connection of the waste tires, and the number of the positioning holes is matched with that of the positioning rods;
the waste tire positioning device is characterized by also comprising a hoop, wherein when adjacent waste tires are arranged in a laminating manner, the hoop is symmetrically arranged on a positioning rod contacted by the two waste tires, and when a space exists between the adjacent waste tires, the hoop is arranged at the contact position of each waste tire and the positioning rod;
as a further optimization of the invention, the diameter of the positioning rod is more than or equal to 10mm, and a steel bar or a fiber reinforced composite material bar is selected for manufacturing; the distance between the inserted position of each positioning rod and the outer edge of the waste tire is more than or equal to 35 mm;
as a further preferred option of the invention, a plurality of junked tires are sequentially overlapped and connected in series, and the distance between two adjacent junked tires is 0-1 m;
the waste tires used for superposition series connection have the same or different sizes, and the hollow inner diameter of the waste tires ranges from 250mm to 1500 mm;
as a further preferable mode of the present invention, in the sixth step, the rate of the vibration machine for performing the tube drawing operation on the immersed tube is 0.6m/min to 1.5 m/min;
in a further preferred embodiment of the present invention, in the eighth step, the excavation depth of the pile core soil and the pile periphery soil on the surface of the foundation is in a range of 0.3m to 0.5 m.
Through the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. the invention utilizes the inherent shape of the waste tire to form the mold, has convenient and quick construction and low cost, achieves the aim of treating solid waste, and has environmental protection and economic benefits;
2. based on the diversity of the size and specification of the waste tires, the invention obtains various special-shaped piles such as ribbed piles, I-shaped piles, club-footed piles and the like with different section shapes by combining different diameters, intervals, numbers and the like or cutting the tires according to design requirements, and has strong flexibility;
3. the special-shaped pile manufactured by using the waste tires not only meets the requirements of different projects, but also has strong bearing capacity;
4. the used waste tires form radial constraint force around the special-shaped pile to play a role of a stirrup, the tire beads also have constraint effect in the axial direction, the tire surfaces are rough, the friction force with soil is increased, and the bearing capacity of the pile is further improved by combining the longitudinal reinforcing steel bar effect of the positioning rods;
5. the special-shaped pile is made of waste tires, so that the special-shaped pile has the characteristics of good wear resistance, ageing resistance and shock resistance, and has long service life due to good adaptive deformability and long-term stability.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of a sink pipe according to a preferred embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a plurality of waste tires stacked and connected in series in a preferred embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a waste tire after being connected in series according to a preferred embodiment of the present invention;
FIG. 4 is a schematic illustration of the construction steps of the preferred embodiment provided by the present invention;
FIG. 5 is a schematic view of the combination of junked tires in a preferred embodiment of the present invention, which includes four combined side views 5a, 5b, 5c and 5 d;
fig. 6 is a schematic cross-sectional view of the special-shaped pile formed in a matching manner with fig. 5 in the preferred embodiment of the invention, and the cross-sectional shape of the special-shaped pile comprises four pile cross-sectional shapes of 6a, 6b, 6c and 6 d;
fig. 7 is a schematic view of the connection between adjacent worn tires according to the preferred embodiment of the present invention.
In the figure: 1 is a sinking pipe, 2 is a pile tip, 3 is a waste tire, 4 is a positioning rod, and 5 is a hoop.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
The method for forming the special-shaped pile by fully utilizing the tire as the template is provided by combining the reutilization of the waste tire and fully playing the self characteristics of the waste tire on the premise of utilizing the characteristics of high bearing capacity, low manufacturing cost and good stability of the special-shaped pile.
Examples
The application provides a method for forming a special-shaped pile in situ by using a waste tire 3 as a template, which is shown in figure 4 and comprises the following steps:
firstly, keeping a pouring site flat, measuring and setting out, and determining a pile position;
secondly, erecting a guide frame at the determined pile position, wherein the vertical deflection angle of the guide frame and the ground is less than or equal to 1.5%, one side of the guide frame is provided with a hoisting device, the hoisting device is used for installing the immersed tube 1 with the valve pile tip 2 at the determined pile position, as shown in figure 1, the immersed tube 1 is arranged in a hollow circular ring shape, the bottom of the immersed tube is provided with the pile tip 2, the size of the hollow part is determined according to the size of the inner diameter of the selected waste tire 3, as long as the hollow diameter is slightly smaller than the minimum inner diameter of the waste tire 3, and the outer diameter of the immersed tube 1 is slightly larger than the maximum outer diameter of the waste tire 3.
And thirdly, starting the vibrating machine, applying pressure to the immersed tube 1, and immersing the immersed tube 1 to the designed depth.
Fourthly, as shown in fig. 2, selecting a plurality of waste tires 3, sequentially stacking the plurality of waste tires 3, respectively forming at least four positioning holes on the bead of each waste tire 3, wherein the number of the positioning holes is matched with the number of the positioning rods 4, sequentially inserting the positioning rods 4 into the positioning holes to realize the serial connection and fixation of the plurality of waste tires 3, and simultaneously, in order to realize the positioning of the waste tires 3 on the positioning rods 4, the waste tires are provided with clamps, and as shown in fig. 7, when adjacent waste tires are arranged in a laminating manner, the clamps are symmetrically arranged on the positioning rods contacted with the two waste tires; when a space exists between the adjacent waste tires, a hoop is arranged at the contact position of each waste tire and the positioning rod, wherein the spaces between the adjacent waste tires 3 which are sequentially stacked are equal or unequal;
it is emphasized here that, in order to obtain the deformed pile, the junked tires 3 are used as templates, and then the junked tires 3 connected in series can have a plurality of combinations, which represent that not only the sizes of the selected junked tires 3 can be different, but also the distances between the adjacent superposed junked tires 3 can be different, and of course, the tires can also be cut to obtain the required shape, as shown in fig. 5, four combination modes are provided, the junked tires 3 of the same specification are superposed at the same interval in 5a, the junked tires 3 of the same specification are superposed in sequence in 5b, and no gap is formed between the adjacent two junked tires 3, the junked tires 3 of different specifications are superposed in a manner that the diameters of the junked tires 3 are gradually reduced from bottom to top in 5c, and no gap is formed between the adjacent two junked tires 3, 5d, waste tires 3 of different specifications are superposed at different intervals; the positioning rod 4 is used for fixing a plurality of waste tires 3 in series, four positioning rods are arranged in the preferred embodiment, as shown in fig. 3, in order to play a better fixing role, the diameter of the positioning rod 4 is greater than or equal to 10mm, the selected material can be a steel bar or a Fiber Reinforced Plastic (FRP) bar, and when the positioning rod 4 is inserted on a circular ring of the waste tires 3, the distance from the outer edge (minus the thickness) of the waste tires 3 is greater than or equal to 35 mm;
it should be noted that the hollow inner diameter of the waste tyre 3 is between 250mm and 1500mm, which covers the diameter range of the conventional engineering pile.
Fifthly, the hoisting equipment places the waste tires 3 which are connected in series in the immersed tube 1, and the position is adjusted; before next operation, a reinforcement cage formed by binding or a Fiber Reinforced Plastic (FRP) reinforcement cage can be placed in the circular hollow of the immersed tube 1, and when the reinforcement cage is placed, the reinforcement cage is based on two conditions, if the reinforcement cage is needed to be placed in a pile of a common foundation pile foundation, and if the reinforcement cage is not needed to be placed in a pile of a foundation.
Sixthly, starting the vibrating machine again, performing pipe drawing operation on the immersed tube 1, wherein the upward drawing speed is 0.6-1.5 m/min, and simultaneously pouring sand stone materials, cement slurry, concrete or flowing solidified silt soil in the annular hollow part of the immersed tube 1;
seventhly, after the immersed tube 1 is completely pulled out, a special-shaped pile can be formed, the four waste tire 3 combination modes of fig. 5 are matched, the formed special-shaped pile is shown in fig. 6, a similar I-shaped pile is arranged in 6a, an equal-diameter pile is arranged in 6b, a club-footed pile is arranged in 6c, and a ribbed pile is arranged in 6 d;
the formed special-shaped pile fully utilizes the special-shaped effect of the cross section of the pile, increases the contact area of the pile body and a soil layer, improves the frictional resistance of the special-shaped side wall, and enhances the pulling resistance and the overturning resistance of the special-shaped side wall, thereby improving the vertical bearing capacity and the horizontal bearing capacity; meanwhile, the waste tire 3 forms radial constraint force around the special-shaped pile to play a role of a stirrup, the tire bead also has a constraint effect in the axial direction, the friction force with soil is increased due to the rough surface of the tire, and the positioning rod 4 is combined to play a role of a longitudinal steel bar, so that the bearing capacity of the pile is further improved.
And eighthly, after the special-shaped pile is formed for 24 hours, excavating pile core soil and pile surrounding soil with the depth of 0.3-0.5 m on the surface of the foundation, and pouring concrete in the excavated area to form a pile cover plate.
This application is ingenious has used junked tire 3 as the template of dysmorphism stake, and its advantage of stand wear and tear, ageing resistance and shock resistance performance preferred of make full use of has not only improved the bearing capacity of pile body, has still guaranteed its life, has made great contribution for the reuse of resource, is fit for popularization on a large scale.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The meaning of "and/or" as used herein is intended to include both the individual components or both.
The term "connected" as used herein may mean either a direct connection between components or an indirect connection between components via other components.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. A method for forming a special-shaped pile in situ by using waste tires as templates is characterized by comprising the following steps: the method comprises the following steps:
firstly, keeping a pouring site flat, measuring and setting out, and determining a pile position;
secondly, erecting a guide frame at the determined pile position, wherein the vertical deflection angle of the guide frame and the ground is less than or equal to 1.5%, one side of the guide frame is provided with hoisting equipment, and the hoisting equipment is used for installing a sinking pipe with a valve pile tip at the determined pile position, wherein the sinking pipe is arranged in a hollow circular ring shape;
thirdly, starting a vibrating machine, applying pressure to the immersed tube, and immersing the immersed tube to a designed depth;
fourthly, selecting a plurality of waste tires, sequentially stacking the waste tires, and connecting the stacked waste tires in series through at least four positioning rods, wherein the distances between the adjacent waste tires which are sequentially stacked are equal or unequal;
fifthly, the hoisting equipment places the waste tires after being connected in series in the immersed tube, and the position of the waste tires is adjusted;
sixthly, starting the vibrating machine again, performing pipe drawing operation on the immersed tube, and pouring sand stone materials, cement slurry, concrete or flowing solidified silt soil in the annular hollow part of the immersed tube;
seventhly, forming a special-shaped pile after the immersed tube is completely pulled out;
and eighthly, after the special-shaped pile is formed for 24 hours, excavating pile core soil and pile periphery soil on the surface of the foundation, and pouring concrete in the excavated area to form a pile cover plate.
2. The special-shaped pile cast-in-place piling method using the waste tire as the template as recited in claim 1, characterized in that: the section of the immersed tube is in a hollow circular ring shape, the hollow size of the immersed tube is matched with the selected waste tire, namely the hollow diameter is close to and smaller than the minimum inner diameter of the waste tire, and the outer diameter of the immersed tube is close to and larger than the maximum outer diameter of the waste tire.
3. The special-shaped pile cast-in-place piling method using the waste tire as the template as recited in claim 1, characterized in that: in the fourth step, at least four positioning holes are formed in the tire bead of each waste tire, the positioning rods penetrate through the positioning holes to realize series connection of the waste tires, and the number of the positioning holes is matched with the number of the positioning rods;
still be equipped with the clamp, when adjacent junked tire laminating sets up, the symmetry installation clamp on the locating lever of two junked tire contacts, when having the interval between the adjacent junked tire, at every junked tire and locating lever contact department installation clamp.
4. The special-shaped pile cast-in-place piling method using the waste tire as the template as recited in claim 1, characterized in that: the diameter of the positioning rod is larger than or equal to 10mm, and a steel bar or a fiber reinforced composite material bar is selected for manufacturing; the distance between the inserted position of each positioning rod and the outer edge of the waste tire is larger than or equal to 35 mm.
5. The special-shaped pile cast-in-place piling method using the waste tire as the template as recited in claim 1, characterized in that: a plurality of waste tires are sequentially overlapped and connected in series, and the distance between every two adjacent waste tires is 0-1 m;
the waste tires used for superposition series connection have the same or different sizes, and the hollow inner diameter of the waste tires ranges from 250mm to 1500 mm.
6. The special-shaped pile cast-in-place piling method using the waste tire as the template as recited in claim 1, characterized in that: in the sixth step, the speed of the vibrating machine for drawing the immersed tube is 0.6m/min-1.5 m/min.
7. The special-shaped pile cast-in-place piling method using the waste tire as the template as recited in claim 1, characterized in that: and in the eighth step, the depth range of the pile core soil and the pile periphery soil excavated on the surface of the foundation is 0.3m-0.5 m.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010862652.1A CN112127359A (en) | 2020-08-25 | 2020-08-25 | Special-shaped pile cast-in-place pile forming method using waste tires as templates |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010862652.1A CN112127359A (en) | 2020-08-25 | 2020-08-25 | Special-shaped pile cast-in-place pile forming method using waste tires as templates |
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| CN112127359A true CN112127359A (en) | 2020-12-25 |
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| CN202010862652.1A Pending CN112127359A (en) | 2020-08-25 | 2020-08-25 | Special-shaped pile cast-in-place pile forming method using waste tires as templates |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113818433A (en) * | 2021-09-10 | 2021-12-21 | 山东省交通规划设计院集团有限公司 | Variable-section waste tire pile composite foundation and construction process thereof |
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| CN202755348U (en) * | 2011-12-26 | 2013-02-27 | 华北水利水电学院 | Junked tire prestressed mesh and tubular column |
| CN103911983A (en) * | 2014-04-17 | 2014-07-09 | 山东大学 | Tire-gravel drainage pile composite foundation treatment method |
| CN204475361U (en) * | 2014-12-26 | 2015-07-15 | 沈阳建筑大学 | Prestressed damping formula Tyre structure ground |
| CN108560542A (en) * | 2018-05-03 | 2018-09-21 | 湖北工业大学 | A kind of waste tire cladding builds the two-directed reinforcement and its construction method of slag |
| CN110485266A (en) * | 2019-08-22 | 2019-11-22 | 浙江工业大学 | A kind of road-bridge transition section road structure and construction method based on waste tire |
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2020
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|---|---|---|---|---|
| US20080193223A1 (en) * | 2005-05-20 | 2008-08-14 | Geopier Foundation Company, Inc. | Slotted Mandrel for Lateral Displacement Pier and Method of Use |
| CN202755348U (en) * | 2011-12-26 | 2013-02-27 | 华北水利水电学院 | Junked tire prestressed mesh and tubular column |
| CN103911983A (en) * | 2014-04-17 | 2014-07-09 | 山东大学 | Tire-gravel drainage pile composite foundation treatment method |
| CN204475361U (en) * | 2014-12-26 | 2015-07-15 | 沈阳建筑大学 | Prestressed damping formula Tyre structure ground |
| CN108560542A (en) * | 2018-05-03 | 2018-09-21 | 湖北工业大学 | A kind of waste tire cladding builds the two-directed reinforcement and its construction method of slag |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113818433A (en) * | 2021-09-10 | 2021-12-21 | 山东省交通规划设计院集团有限公司 | Variable-section waste tire pile composite foundation and construction process thereof |
| CN113818433B (en) * | 2021-09-10 | 2022-11-29 | 山东省交通规划设计院集团有限公司 | Variable-section waste tire pile composite foundation and construction process thereof |
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