CN102644280A - Retaining cantilever pile with reinforced plastic stirrups - Google Patents
Retaining cantilever pile with reinforced plastic stirrups Download PDFInfo
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- CN102644280A CN102644280A CN2012101291679A CN201210129167A CN102644280A CN 102644280 A CN102644280 A CN 102644280A CN 2012101291679 A CN2012101291679 A CN 2012101291679A CN 201210129167 A CN201210129167 A CN 201210129167A CN 102644280 A CN102644280 A CN 102644280A
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- strand cable
- enlarged footing
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Abstract
The invention discloses a retaining and protecting cantilever pile with reinforced plastic stirrups, which comprises a framework cage arranged inside a pile body, the framework cage on the tension side of the pile body is provided with at least one prestressed steel bar, reinforced plastic rods or pipes are arranged on the frame cage on the other portion of the pile body, the stirrups arranged on the framework cage are the reinforced plastic rods or pipes, and the reinforced plastic rods or pipes are made of carbon fibers, glass fibers or aramid fibers. The retaining cantilever pile with reinforced plastic stirrups adopts different design schemes for two sides of the reinforcing steel bar framework cage of the pile body, the side which is in tension is provided with post-tensioned prestressing steel nooses, and the compressed side is provided with post-tensioned prestressing reinforced plastic rods or pipes, so that the advantages that the prestressing steel nooses has high tension strength and the plastic rods has high compressive strength are enhanced, the overall performance of a pile foundation is improved, the production cost of the pile foundation and the construction cost are reduced, and the disassembly construction is facilitated simultaneously due to the fact that the reinforced plastic rods belong to hard brittle materials which are weak in anti-breakage performance.
Description
Technical field
The present invention relates to building field, be specifically related to foundation pile.
Background technology
Traditional foundation pit supporting pile is evenly to arrange reinforcing bar along the stake periphery, and the pile body loading characteristic is to lean on the soil body one side to be drawn, and leans on foundation ditch limit one side pressurized; The stressed difference in both sides, and stressed not of uniform size causing, therefore; Generally speaking, all be that the advantage of this structure stake is easy construction at a side configuration reinforcement that is drawn; But shortcoming also clearly, and promptly reinforcing bar can not play a role fully, causes bigger waste.Before this, the inventor has proposed name and has been called " a kind of partial prestressing supporting cantilever pile " patent application, and this patent application is different according to pile body both sides force-bearing situation; Different design schemes is adopted in cage of reinforcement cage both sides to pile body; A side that is pressurized adopts plain bars, and a side of being drawn adopts post-tensioned prestressing steel strand cable, has not only improved the overall performance of pile body; And practiced thrift great deal of steel, have favorable economic benefit.But still there is following defective in this technical scheme, the one, need dispose metal material respectively in skeleton cage pressurized, the both sides of being drawn; The 2nd, because reinforcing bar has stronger toughness, be not easy to remove, bring and remove that difficulty is big, to remove cost high.Can select nonmetallic substitution material for use, further reduce the cost of soldier pile, the convenient dismounting be the problem that the sector need be researched and solved.The applicant has proposed " a kind of prestress steel strand cable, reinforced plastic bar composite construction supporting cantilever pile " on the same day, as the part distribution bar of cage of reinforcement cage, disposes prestressed reinforcement with reinforced plastic bar or tubing simultaneously, preferably resolves the problems referred to above.But the stirrup of cage of reinforcement cage still adopts reinforcing bar, still need use the reinforced plastic bar to substitute, and further reduces cost.
Summary of the invention
The technical problem that the present invention will solve provides a kind of supporting cantilever pile that is provided with the reinforced plastic stirrup, under the constant situation of the overall performance that guarantees pile foundation, reduces the cost of soldier pile, convenient simultaneously the dismounting.
The present invention realizes through following technical scheme:
A kind of supporting cantilever pile that is provided with the reinforced plastic stirrup comprises the skeleton cage in the pile body, and the stirrup on the said skeleton cage is reinforced plastic bar or tubing.
The further improvement project of the present invention is, said pile body is drawn on the skeleton cage of a side to be provided with a prestressed reinforcement at least, and the skeleton cage of remainder is provided with reinforced plastic bar or tubing.
The further improvement project of the present invention is that said reinforced plastic bar or tubing are carbon fiber, glass fiber or aromatic polyamide fiber reinforced plastics bar or tubing.Reinforced plastic bar or tubing abbreviation: FRP, carbon fiber, glass fiber or aramid fiber bar or tubing abbreviation are respectively: CFRP, GFRP, AFRP.
The present invention further improvement project is that the external surface of reinforced plastic bar or tubing is provided with convexity or is provided with screw thread or is rough surface (increase frictional force).
Said steel strand cable upper end is provided with the fixed connecting piece after the stretch-draw, and said steel strand cable upper end and connector thereof are positioned at the cushion cap face.
The present invention further improvement project is, is provided with an enlarged footing on the said steel strand cable at least, and when enlarged footing was one, said enlarged footing was arranged at the lower end of steel strand cable;
When enlarged footing is one when above, said enlarged footing sets gradually to the upper end from the lower end of steel strand cable.
The present invention further improvement project is that said enlarged footing is nut or extruding anchor or concrete precast element.
The present invention further improvement project is, when enlarged footing was concrete precast element, said concrete precast element was provided with the hole, and post-tensioned prestressing steel strand cable passes said hole and connects fixing;
When enlarged footing is nut or extruding anchor, on the post-tensioned prestressing steel strand cable above nut or the extruding anchor, be provided with backing plate.
The present invention further improvement project is that the steel strand cable top between fixed connecting piece and enlarged footing is provided with sleeve pipe, bottom and pile body bonding.
The present invention compared with prior art has following obvious advantage:
One, the present invention is different according to pile body both sides force-bearing situation; Skeleton cage distribution bar to pile body adopts different design schemes; One side of promptly being drawn disposes post-tensioned prestressing steel strand cable; Remainder configuration reinforced plastic bar or tubing, simultaneously, the stirrup on the skeleton cage also adopts reinforced plastic bar or tubing.Put down in writing according to relevant document; The compressive strength of reinforced plastic bar is more than the twice of reinforcing bar, and its price is lower than reinforcing bar, therefore; Make soldier pile with this substitution material; Can give full play to the advantage that prestress steel strand cable tensile strength is high, reinforced plastic bar compressive strength is high, improve the overall performance of pile foundation, can reduce cost of manufacture, the reduction construction costs of soldier pile again.
Two, because the reinforced plastic bar belongs to fragile material, anti-fracture ability a little less than, therefore made things convenient for and removed construction.
Description of drawings
Fig. 1 is the axial cross-sectional schematic of the present invention.
Fig. 2 is Figure 1A-A cross-sectional schematic.
The specific embodiment
Embodiment 1
Like Fig. 1, shown in 2; The present invention includes the skeleton cage in the pile body 1; Said pile body 1 is drawn, and coaxial line is provided with 4 post-tensioned prestressing steel strand cables 4 (skeleton muscle) on the skeleton cage of a side, and coaxial line is provided with reinforced plastic bar 3 (skeleton muscle) on the skeleton cage of remainder.As shown in Figure 1, the stirrup 2 on the skeleton cage adopts the reinforced plastic bar.
In the present embodiment, said reinforced plastic bar is the carbon fiber bar, and the diameter of reinforced plastic bar is 10mm (diameter of rod is according to the size setting of pile body holding capacity).
In the present embodiment, the external surface of reinforced plastic bar 3 is provided with screw thread (diagram is not provided).
As shown in Figure 1, said steel strand cable 4 upper ends are provided with the fixed connecting piece 5 after the stretch-draw, and said steel strand cable upper end and connector thereof are positioned at the cushion cap face.In the present embodiment, connector 5 is selected ground tackle for use.
Said steel strand cable 4 lower ends are provided with an enlarged footing 6, and said enlarged footing 6 is for the extruding anchor, and is as shown in Figure 1, on the post-tensioned prestressing steel strand cable 4 above the extruding anchor 6, are provided with billet 7.
Still as shown in Figure 1, the steel strand cable top between fixed connecting piece 5 and enlarged footing 6 is provided with sleeve pipe 8, steel strand cable bottom and pile body bonding.
After the pile body perfusion was good, cushion cap (can not do cushion cap for stressed less pile body) was done in the upper end then.Wait to reach certain intensity, with ground tackle it is locked again behind the stretch-draw steel strand cable.
Said reinforced plastic bar is the glass fiber bar.All the other are implemented like embodiment 1.
Said reinforced plastic bar is the aramid fiber bar.All the other are implemented like embodiment 1.
Claims (8)
1. a supporting cantilever pile that is provided with the reinforced plastic stirrup comprises the skeleton cage in the pile body, and it is characterized in that: the stirrup on the said skeleton cage is reinforced plastic bar or tubing.
2. a kind of supporting cantilever pile that is provided with the reinforced plastic stirrup as claimed in claim 1 is characterized in that: said pile body is drawn on the skeleton cage of a side to be provided with a prestressed reinforcement at least, and the skeleton cage of remainder is provided with reinforced plastic bar or tubing.
3. according to claim 1 or claim 2 a kind of supporting cantilever pile that is provided with the reinforced plastic stirrup, it is characterized in that: said reinforced plastic bar or tubing are carbon fiber, glass fiber or aramid fiber bar or tubing.
4. according to claim 1 or claim 2 a kind of supporting cantilever pile that is provided with the reinforced plastic stirrup, it is characterized in that: the external surface of reinforced plastic bar or tubing is provided with convexity or is provided with screw thread or is rough surface.
5. a kind of supporting cantilever pile that is provided with the reinforced plastic stirrup as claimed in claim 2 is characterized in that: said steel strand cable upper end is provided with the fixed connecting piece after the stretch-draw, and said steel strand cable upper end and connector thereof are positioned at the cushion cap face;
At least be provided with an enlarged footing on the said steel strand cable, when enlarged footing was one, said enlarged footing was arranged at the lower end of steel strand cable;
When enlarged footing is one when above, said enlarged footing sets gradually to the upper end from the lower end of steel strand cable.
6. a kind of supporting cantilever pile that is provided with the reinforced plastic stirrup as claimed in claim 5 is characterized in that: said enlarged footing is nut or extruding anchor or concrete precast element.
7. a kind of supporting cantilever pile that is provided with the reinforced plastic stirrup as claimed in claim 6, it is characterized in that: when enlarged footing was concrete precast element, said concrete precast element was provided with the hole, and post-tensioned prestressing steel strand cable passes said hole and connects fixing;
When enlarged footing is nut or extruding anchor, on the post-tensioned prestressing steel strand cable above nut or the extruding anchor, be provided with backing plate.
8. a kind of supporting cantilever pile that is provided with the reinforced plastic stirrup as claimed in claim 5 is characterized in that: the steel strand cable top between fixed connecting piece and enlarged footing is provided with sleeve pipe, bottom and pile body bonding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101291679A CN102644280A (en) | 2012-04-28 | 2012-04-28 | Retaining cantilever pile with reinforced plastic stirrups |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101291679A CN102644280A (en) | 2012-04-28 | 2012-04-28 | Retaining cantilever pile with reinforced plastic stirrups |
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| Publication Number | Publication Date |
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| CN102644280A true CN102644280A (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012101291679A Pending CN102644280A (en) | 2012-04-28 | 2012-04-28 | Retaining cantilever pile with reinforced plastic stirrups |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644281A (en) * | 2012-04-28 | 2012-08-22 | 从卫民 | Prestressed supporting cantilever pile with reinforcing plastic stirrups |
| CN104612133A (en) * | 2015-01-15 | 2015-05-13 | 安徽省建筑科学研究设计院 | Concrete precast pile with mixed reinforcement of glass fiber-reinforced polymers and steel bars |
| CN107130589A (en) * | 2017-06-07 | 2017-09-05 | 安徽省建筑科学研究设计院 | A kind of asymmetric compound armored concrete poured support stake |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000345655A (en) * | 1999-06-03 | 2000-12-12 | East Japan Railway Co | Structure material for reinforcing concrete, and structure for reinforcing concrete |
| CN101343870A (en) * | 2008-08-22 | 2009-01-14 | 北京航空航天大学 | Fiber-reinforced composite material rib concrete pile and its production and construction method |
| CN102312482A (en) * | 2011-05-05 | 2012-01-11 | 吕怀民 | Main structure |
| CN102345291A (en) * | 2011-07-21 | 2012-02-08 | 从卫民 | Partially prestressed supporting cantilever pile |
| CN102644281A (en) * | 2012-04-28 | 2012-08-22 | 从卫民 | Prestressed supporting cantilever pile with reinforcing plastic stirrups |
| CN202543915U (en) * | 2012-04-28 | 2012-11-21 | 从卫民 | Shoring cantilever pile provided with reinforced plastic stirrup |
| CN202543913U (en) * | 2012-04-28 | 2012-11-21 | 从卫民 | Prestressed supporting cantilever pile provided with reinforced plastic stirrup |
-
2012
- 2012-04-28 CN CN2012101291679A patent/CN102644280A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000345655A (en) * | 1999-06-03 | 2000-12-12 | East Japan Railway Co | Structure material for reinforcing concrete, and structure for reinforcing concrete |
| CN101343870A (en) * | 2008-08-22 | 2009-01-14 | 北京航空航天大学 | Fiber-reinforced composite material rib concrete pile and its production and construction method |
| CN102312482A (en) * | 2011-05-05 | 2012-01-11 | 吕怀民 | Main structure |
| CN102345291A (en) * | 2011-07-21 | 2012-02-08 | 从卫民 | Partially prestressed supporting cantilever pile |
| CN102644281A (en) * | 2012-04-28 | 2012-08-22 | 从卫民 | Prestressed supporting cantilever pile with reinforcing plastic stirrups |
| CN202543915U (en) * | 2012-04-28 | 2012-11-21 | 从卫民 | Shoring cantilever pile provided with reinforced plastic stirrup |
| CN202543913U (en) * | 2012-04-28 | 2012-11-21 | 从卫民 | Prestressed supporting cantilever pile provided with reinforced plastic stirrup |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644281A (en) * | 2012-04-28 | 2012-08-22 | 从卫民 | Prestressed supporting cantilever pile with reinforcing plastic stirrups |
| CN104612133A (en) * | 2015-01-15 | 2015-05-13 | 安徽省建筑科学研究设计院 | Concrete precast pile with mixed reinforcement of glass fiber-reinforced polymers and steel bars |
| CN107130589A (en) * | 2017-06-07 | 2017-09-05 | 安徽省建筑科学研究设计院 | A kind of asymmetric compound armored concrete poured support stake |
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Application publication date: 20120822 |