CN205224025U - Prestressing force anti -floating pile - Google Patents
Prestressing force anti -floating pile Download PDFInfo
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- CN205224025U CN205224025U CN201520898547.8U CN201520898547U CN205224025U CN 205224025 U CN205224025 U CN 205224025U CN 201520898547 U CN201520898547 U CN 201520898547U CN 205224025 U CN205224025 U CN 205224025U
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- steel strand
- stirrup
- spring
- backing plate
- outside
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Abstract
The utility model discloses a prestressing force anti -floating pile, the ground wire pile comprises a pile body, be equipped with the steel reinforcement cage in the pile body, the steel reinforcement cage includes the distributing bar along the circumference distribution of a plurality of vertical settings, the inside and outside both sides of distributing bar are equipped with inboard stirrup and the outside enhancement stirrup strengthened respectively, the outside strengthens that the stirrup is vertical to be provided with a plurality of steel strand wires, be equipped with the stirrup on the steel strand wires, the utility model has the advantages of: through adopting the substituting common concrete anti -floating pile reinforcing bar of prestressed anchorage cable in the prestressing force resistance to plucking bored concrete pile to be drawn, the cost is practiced thrift to the volume of significantly reducing the arrangement of reinforcement.
Description
Technical field
The utility model relates to a kind of uplift pile, and specifically a kind of prestress pulling resistant castinplace pile, belongs to uplift pile field.
Background technology
Along with the development of China's economic and the growth of population, the exploitation of the underground space constantly increases, as underground parking, underground station, big basement etc., because a lot of Urban Underground water level is higher, and underground parking, underground station, the general buried depth of big basement is larger, the load of superstructure can not meet the buoyancy of underground water, and building bottom integrated or local are subject to the effect of buoyancy.In order to balance superstructure load and water buoyancy, need on top to the tangible pulling force of building.Therefore uplift pile is created.According to technical code for building pile foundation requirement, pile body should carry out bearing capacity and calculation of crack control, and uplift pile resists axial pulling force upwards by the frictional force of pile body and soil layer, and the arrangement of reinforcement of castinplace pile determines primarily of calculation of crack control.As by steel strand Shi Hanzhang, bear pulling force by steel strand, greatly can reduce the arrangement of reinforcement of pile foundation.Adopt prestress pulling resistant castinplace pile to bear pulling force, can quantity of reinforcement be reduced, and not produce crack, have the anticorrosive row of pile foundation and improve greatly.
Utility model content
In order to solve the problem, the utility model devises a kind of prestress pulling resistant castinplace pile, by adopting the prestress anchorage cable in prestress pulling resistant castinplace pile to substitute ordinary concrete uplift pile reinforcing bar tension, greatly reduces quantity of reinforcement, cost-saving.
The technical solution of the utility model is:
Prestress pulling resistant stake, comprise pile body, reinforcing cage is provided with in described pile body, described reinforcing cage comprises the distributing bar circumferentially distributed of some vertical settings, the inside and outside both sides of described distributing bar are respectively equipped with inner side and strengthen stirrup and outside reinforcement stirrup, the surrounding that stirrup is strengthened in described outside is vertically provided with some steel strand, and described steel strand are provided with stirrup.
Further, the bottom of described steel strand is made up of bottom anchor head, bottom sleeve, backing plate at bottom, bottom squeeze cover, bottom reinforcement bars spring, described bottom squeeze is set on the outboard end of described steel strand, described bottom squeeze puts and is provided with described bottom anchor head, described bottom anchor head is provided with described backing plate at bottom, described backing plate at bottom is provided with described bottom reinforcement bars spring, inside described bottom reinforcement bars spring, described bottom sleeve is set.
Further, the top of described steel strand is made up of top anchor head, top sleeve pipe, top backing plate, top rebars spring, described top anchor head is positioned at the outboard end of described steel strand, described top anchor head is arranged on the backing plate of described top, described top backing plate is arranged on described top rebars spring, described top rebars spring is arranged on the outside of described top sleeve pipe, and described top sleeve pipe is arranged on the outside of described steel strand.
Wherein, described bottom reinforcement bars spring and top rebars spring all adopt diameter 8mmHPB300 reinforcement fabrication, play the effect of protection concrete local compression.
Described top backing plate and backing plate at bottom size meet the requirement of concrete local compression.
Construction sequence is as follows:
(1) screwing steel bars cage: according to constructional reinforcement (reinforcing bar) screwing steel bars cage-----steel strand brush bituminous ship bottom paint----wrap up in pitch glass-fiber-fabric---two coating butter--------grafting engineering adhesive plaster---reinforcing bar spring, extruded sleeve, backing plate, anchor head, locking plate are installed in bottom---is steel strand colligation on reinforcing cage to load sleeve pipe, the position that each and reinforcement stirrup intersects adopts tied silk colligation, steel strand require straight, and certain length is reserved on top.Steel strand tip position adopts wire binding, prevents the steel wire of steel strand from scattering;
(2) pore-forming;
(3) reinforcing cage is transferred;
(4) concreting;
(5) pick pile crown, pick in the process of pile crown the protection strengthened steel strand, require that steel strand are vertical;
Concrete reaches grading tension after intensity, and stretch-draw adopts elongation and pulling force dual control.
Owing to have employed prestressing force, castinplace pile pile body free from flaw, economical rationality.
The tensile strength of steel strand is 1860MPa, and in unit area, stretching resistance is comparatively large, although comparatively reinforcing bar price is slightly high for per ton cost, in identical pulling force situation, steel strand quantity of reinforcement is less, and economy is better.By adopting steel strand to bear pulling force, while meeting pile body uplift resistance by Shi Hanzhang, prestressing force acts on pile body, and pile concrete is in pressured state or is in the tension state being less than concrete tension.There is not crack in pile body, improves anticorrosive to underground water and soil of pile body steel and concrete.
The utility model bears pulling force by prestress wire, solves the crack problem of uplift principle, reliably more economical relative to reinforcing bar.
The utility model has the advantage of:
(1) point-like is concentrated to arrange, under being generally arranged in post
Vertical force that superstructure transmits can be made full use of to balance a part of water buoyancy; Arrange due to anchor pole and concentrate, have very strong resistance.Shortcoming: require to be anchored in solid rock, be not suitable for soft rock and the soil body, destroy the destruction of Bolted Rock Masses often; Because local anchor pole is closeer, anchor bolt construction is inconvenient; Basement bottom board beam slab arrangement of reinforcement is larger.Concentrate point-like to arrange and recommend to be used for hard rock;
(2) wire is concentrated to arrange, under being generally arranged in basement bottom board beam
Because anchor pole arranges Relatively centralized, there is stronger resistance.Shortcoming: can not make full use of vertical force that superstructure transmits to balance a part of water buoyancy (think personally consider relatively dangerous, span-depth radio is less than to the floor beams of 6, can with due regard to the vertical force that transmits of superstructure to balance a part of water buoyancy), requirement is anchored in comparatively in hard rock body, is not suitable for soft rock and the soil body; Basement bottom board plate arrangement of reinforcement is larger.Concentrate wire to arrange and recommend to be used for hard rock and comparatively hard rock;
(3) planar is evenly arranged, and is evenly arranged under basement bottom board
Be applicable to all soil bodys and rock mass; Basement bottom board beam slab arrangement of reinforcement is less.Shortcoming: vertical force that superstructure transmits can not be made full use of to balance a part of water buoyancy (think personally consider relatively dangerous); For the situation of indivedual anchor pole Lack of support, because the anchor pole that can share is less, this situation resistance is poor; Because anchor pole arranges relative distribution, cumbersome for the outer waterproof construction under basement bottom board.Planar is evenly arranged recommends for all situations; Consider economy, stratum, the distribution of foundation columns and construction period requirement, under finally adopting post, arrange the uplift pile of right quantity.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment reinforcing cage;
Fig. 2 is the cross-sectional view of the utility model embodiment reinforcing cage;
Fig. 3 is the structural representation bottom the utility model embodiment steel strand;
Fig. 4 is the structural representation at the utility model embodiment steel strand top.
Detailed description of the invention
Below preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the utility model, and be not used in restriction the utility model.
Embodiment 1
As Figure 1-4, a kind of prestress pulling resistant castinplace pile, comprise pile body, reinforcing cage 1 is provided with in described pile body, described reinforcing cage 1 comprises the distributing bar 11 circumferentially distributed of some vertical settings, the inside and outside both sides of described distributing bar 11 are respectively equipped with inner side and strengthen stirrup 12 and outside reinforcement stirrup 13, and the surrounding that stirrup 13 is strengthened in described outside is vertically provided with some steel strand 14, and described steel strand 14 are provided with stirrup 15.
The bottom of described steel strand 14 is made up of bottom anchor head 22, bottom sleeve 24, backing plate at bottom 23, bottom squeeze cover 21, bottom reinforcement bars spring 25, described bottom squeeze cover 21 is arranged on the outboard end of described steel strand 14, described bottom squeeze cover 21 is provided with described bottom anchor head 22, described bottom anchor head 22 is provided with described backing plate at bottom 23, described backing plate at bottom 23 is provided with described bottom reinforcement bars spring 25, inside described bottom reinforcement bars spring 25, described bottom sleeve 24 is set.
The top of described steel strand 14 is made up of top anchor head 31, top sleeve pipe 32, top backing plate 33, top rebars spring 34, described top anchor head 31 is positioned at the outboard end of described steel strand 14, described top anchor head 31 is arranged on described top backing plate 33, described top backing plate 33 is arranged on described top rebars spring 34, described top rebars spring 34 is arranged on the outside of described top sleeve pipe 32, and described top sleeve pipe 32 is arranged on the outside of described steel strand 14.
Wherein, described bottom reinforcement bars spring and top rebars spring all adopt diameter 8mmHPB300 reinforcement fabrication, play the effect of protection concrete local compression.
Described top backing plate and backing plate at bottom size meet the requirement of concrete local compression.
Claims (5)
1. prestress pulling resistant stake, it is characterized in that: comprise pile body, reinforcing cage is provided with in described pile body, described reinforcing cage comprises the distributing bar circumferentially distributed of some vertical settings, the inside and outside both sides of described distributing bar are respectively equipped with inner side and strengthen stirrup and outside reinforcement stirrup, the surrounding that stirrup is strengthened in described outside is vertically provided with some steel strand, and described steel strand are provided with stirrup.
2. prestress pulling resistant stake according to claim 1, it is characterized in that: the bottom of described steel strand is made up of bottom anchor head, bottom sleeve, backing plate at bottom, bottom squeeze cover, bottom reinforcement bars spring, described bottom squeeze is set on the outboard end of described steel strand, described bottom squeeze puts and is provided with described bottom anchor head, described bottom anchor head is provided with described backing plate at bottom, described backing plate at bottom is provided with described bottom reinforcement bars spring, inside described bottom reinforcement bars spring, described bottom sleeve is set.
3. prestress pulling resistant stake according to claim 1, it is characterized in that: the top of described steel strand is made up of top anchor head, top sleeve pipe, top backing plate, top rebars spring, described top anchor head is arranged on the backing plate of described top, described top backing plate is arranged on described top rebars spring, described top rebars spring is arranged on the outside of described top sleeve pipe, and described top sleeve pipe is arranged on the outside of described steel strand.
4. prestress pulling resistant stake according to claim 2, is characterized in that: described bottom reinforcement bars spring is diameter 8mmHPB300 reinforcing bar.
5. prestress pulling resistant stake according to claim 3, is characterized in that: described top rebars spring is diameter 8mmHPB300 reinforcing bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520898547.8U CN205224025U (en) | 2015-11-12 | 2015-11-12 | Prestressing force anti -floating pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520898547.8U CN205224025U (en) | 2015-11-12 | 2015-11-12 | Prestressing force anti -floating pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205224025U true CN205224025U (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520898547.8U Expired - Fee Related CN205224025U (en) | 2015-11-12 | 2015-11-12 | Prestressing force anti -floating pile |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106284396A (en) * | 2016-08-16 | 2017-01-04 | 重庆市晟庄建材有限责任公司 | A kind of shock-proof type reinforced concrete structure post |
| CN107012880A (en) * | 2017-02-24 | 2017-08-04 | 中铁二十五局集团第五工程有限公司 | A kind of pile pier structure of the empty rail of suspension type |
| CN114908870A (en) * | 2022-05-13 | 2022-08-16 | 西安建筑科技大学 | Novel assembled reinforced concrete beam column node |
| CN115404897A (en) * | 2022-10-08 | 2022-11-29 | 中国电建集团成都勘测设计研究院有限公司 | Construction method of marine composite foundation |
-
2015
- 2015-11-12 CN CN201520898547.8U patent/CN205224025U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106284396A (en) * | 2016-08-16 | 2017-01-04 | 重庆市晟庄建材有限责任公司 | A kind of shock-proof type reinforced concrete structure post |
| CN107012880A (en) * | 2017-02-24 | 2017-08-04 | 中铁二十五局集团第五工程有限公司 | A kind of pile pier structure of the empty rail of suspension type |
| CN114908870A (en) * | 2022-05-13 | 2022-08-16 | 西安建筑科技大学 | Novel assembled reinforced concrete beam column node |
| CN115404897A (en) * | 2022-10-08 | 2022-11-29 | 中国电建集团成都勘测设计研究院有限公司 | Construction method of marine composite foundation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20161112 |