CN203200751U - Prestress anti-floating pile - Google Patents
Prestress anti-floating pile Download PDFInfo
- Publication number
- CN203200751U CN203200751U CN 201320213613 CN201320213613U CN203200751U CN 203200751 U CN203200751 U CN 203200751U CN 201320213613 CN201320213613 CN 201320213613 CN 201320213613 U CN201320213613 U CN 201320213613U CN 203200751 U CN203200751 U CN 203200751U
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- pile
- steel strand
- pile body
- floating
- prestressing force
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Abstract
The utility model provides a prestress anti-floating pile. The prestress anti-floating pile comprises a pile body (1), wherein the pile body (1) is composed of concrete (2) and a steel reinforcing cage framework (3), wherein a steel strand (4) is arranged inside the a steel reinforcing cage framework (3), and the direction of the steel strand (4) is identical to that of the pile body (1). The prestress anti-floating pile is characterized in that the lower end of the steel strand (4) is divided into a first portion (41) and a second portion (42), the first portion (41) and the bottom of the steel reinforcing cage framework (3) are connected and locked, and the second portion (42) penetrates through the bottom of the pile body (1) to be fixedly connected with a load bearing device (5). According to the prestress anti-floating pile, the steel strand is firmly adhered to the pile body, and the phenomena that a pile core is pulled out and the steel strand displaces are avoided in the process of construction. In addition, the steel strand is simultaneously connected with a steel reinforcing cage and the load bearing device arranged at the bottom in an anchored mode, and the top of the steel strand is connected with a concrete bearing platform, so that the stability of a pile foundation is increased and potential safety hazards are reduced.
Description
Technical field
The utility model relates to concrete prefabricated product member field, relates in particular to a kind of prestressing force anti-floating pile.
Background technology
Along with developing rapidly of urban construction, the underground space is constantly dwindled, the height of building constantly increases, the increase of embedded depth of foundation, so that resisting buoyancy of foundation design water buoyancy is increasing, the foundation pile Pile Foundations Design requires more and more higher to resistance to plucking.Present uplift pile design, in the majority with castinplace pile.For example publication number be CN101029488A Patent Application Publication a kind of part binding prestress resistance to plucking anti-floating pile and job practices thereof, wherein in disclosed castinplace pile, utilize steel strand to strengthen the resistance to plucking anti-floating performance of pile body.But the foundation cost of castinplace pile is relatively high, and closely related with construction quality, difficult quality guarantee.Simultaneously, pile-forming speed is slow in the thick-layer dense sand soil layer, and frictional resistance is difficult to give full play to, and because hole wall soil is loosening and mud cake on the wall of borehole is blocked up and the hole at the bottom of sediment thicker, bearing capacity of single pile does not reach designing requirement.And in above-mentioned patent application, steel strand only reach fixedly purpose by being connected with reinforcing cage, so the drawing of these designs locking prestressing force is limited, and locking device is unreliable, often causes the steel strand displacement bigger than normal.
The utility model content
The utility model purpose is to overcome weak point of the prior art, and a kind of prestressing force anti-floating pile is provided, and wherein steel strand and pile body bonding firmly can avoid occurring in the work progress phenomenons such as the stake core is pulled out, steel strand displacement.
In order to achieve the above object, the utility model adopts following scheme: a kind of prestressing force anti-floating pile, comprise the pile body that is consisted of by concrete and reinforcement cage skeleton, in described reinforcement cage skeleton, be provided with the steel strand with the equidirectional setting of described pile body, wherein, form first and second portion after the lower end share split of described steel strand, described first is connected locking with the reinforcement cage skeleton bottom, and the bottom that described second portion passes pile body is fixedly connected with bogey.
Further, the upper end of described steel strand exceeds pile body, and is fixedly connected with cushion cap.
Further, described pile body is square structure, and the part that the upper end of described steel strand exceeds described pile body is not less than 25 times of the described pile body length of side.
Further, the top of described pile body is inserted in the cushion cap.
Further, the degree of depth of the top of described pile body in cushion cap is 1/2nd of described cushion cap height.
Further, described steel strand evenly distribute along the cross section of pile body.
Further, described steel strand adopt without bonding steel strand, or adopt wear leather sheath behind the ordinary steel twisted wire grease, be coated with rust protection agent or insulation rubber after formation without bonding steel strand.
In sum, with respect to prior art, the prestressing force anti-floating pile that the utility model provides has following beneficial effect:
(1) the bogey anchor connection that arranges with reinforcing cage and bottom simultaneously of steel strand, so steel strand are bonding firmly with pile body, avoid occurring in the work progress phenomenons such as a core is pulled out, steel strand displacement.Steel strand are evenly distributed on hollow pile body bottom, guarantee that whole pile foundation is stressed evenly, the situations such as pile body eccentric compression or steel strand displacement occur thereby reduce, and guarantee workmanship, reduce potential safety hazard.
(2) and steel strand also directly extend to cushion cap and be connected with it from pile body, strengthen the steadiness of pile foundation, be difficult for tilting and collapse, reduced potential safety hazard.
(3) bearing capacity of pile is strong, not only can carry vertical drawing load, can also bear the vertical compression load, solves concrete anti-floating problem.Because adopt prefabrication, its concrete strength can be adjusted according to client's needs, general control is at C80 ~ C150, and the intensity of common preformed pile is below C30.
(4) adopt steel strand, reduce the length of filling out core steel concrete, save cost, prevent oxidation and get rusty, tensile strength is much larger than the tensile strength of plain bars simultaneously.
Description of drawings
Fig. 1 is the structural representation of prestressing force anti-floating pile of the present utility model.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, prestressing force anti-floating pile of the present utility model is further described.
As shown in Figure 1, the pile body 1 that prestressing force anti-floating pile of the present utility model is made of concrete 2 and reinforcement cage skeleton 3, in described reinforcement cage skeleton 3, be provided with the steel strand 4 with pile body 1 equidirectional setting, steel strand 4 evenly distribute along the cross section of pile body 1, form two parts after the lower end share split of these steel strand 4, first 41 is connected locking with end plate with the weld interval of reinforcing cage with the stiffener of reinforcement cage skeleton 3 lower ends, the bogey 5 that second portion 42 and pile body 1 bottom arrange, the part that for example anchor plate anchor connection, the upper end of these steel strand exceed pile body 1 is fixedly connected with cushion cap 6.
The structure of pile body can be square pile, pile tube, polygonal pile, and shaped pile etc.
Preferably, pile body 1 is square structure, and the part that the upper end of steel strand exceeds pile body 1 is not less than 25 times of pile body 1 length of side, and steel strand can be fully fixing with cushion cap after inserting in the cushion cap like this, thereby further guarantees the performance of prestressing force anti-floating pile.
Preferably, also insert in the cushion cap 6 at the top of pile body 1, and the degree of depth is preferably 1/2nd of about cushion cap 6 height.
In the above-described embodiments, described steel strand 4 can adopt without bonding steel strand, or adopt and to wear leather sheath behind the ordinary steel twisted wire grease, form without bonding steel strand after being coated with rust protection agent or insulation rubber.
Preferably, described steel strand 4 can be divided into 5 ~ 20 strands, per sharely contain 5 ~ 50 of finer wires, and every diameter is 0.5mm ~ 3mm.But whole strand steel strand external surface grease, zinc-plated, wear plastic cement antirust sleeve or insulation rubber, prevent that maintenance from getting rusty.
Production method and work progress below in conjunction with prestressing force anti-floating pile of the present utility model are further detailed the utility model: described steel strand are penetrated in the described reinforcement cage skeleton, matched moulds, stretch-draw, pumping of concrete, centrifugal, stream curing, highly extrude pile behind the still.Wherein before implementing tensioning process, a core that need be turned back in steel strand 4 upper ends avoids it to be subject to stress tension.
When constructing, will adopt anchor plate to be connected with architecture basics after the top share split of described steel strand 4, concreting be constructed cushion cap 6 afterwards.Pile body is in pressured state all the time bearing under the duty of pulling out load like this, and pile body (comprising joint) drawing crack and because the engineering problems such as durability that the crack causes can not occur.
As shown in the above description, in prestressing force anti-floating pile of the present utility model, steel strand and pile body are bonding firmly, avoid occurring in the work progress phenomenons such as the stake core is pulled out, steel strand displacement.Steel strand are evenly distributed on hollow pile body bottom, guarantee that whole pile foundation is stressed evenly, the situations such as pile body eccentric compression or steel strand displacement occur thereby reduce, and guarantee workmanship, reduce potential safety hazard.And, steel strand are except with reinforcing cage is connected, the bogey anchor connection that part steel strand and bottom arrange, simultaneously steel strand also directly extend to concrete and construct cushion cap and be connected with it from the pile body top, thereby strengthened the steadiness of pile foundation, pile body is difficult for tilting and collapses, and has reduced potential safety hazard.
In sum, the above is specific embodiment of the utility model only, but the utility model is not limited thereto, and the variation that any those skilled in the art can think all should drop in the protection domain of the present utility model.
Claims (7)
1. prestressing force anti-floating pile, comprise the pile body (1) that is consisted of by concrete (2) and reinforcement cage skeleton (3), in described reinforcement cage skeleton (3), be provided with the steel strand (4) with the equidirectional setting of described pile body (1), it is characterized in that, form first (41) and second portion (42) after the lower end share split of described steel strand (4), described first (41) is connected locking with the bottom of reinforcement cage skeleton (3), and the bottom that described second portion (42) passes described pile body (1) is fixedly connected with bogey (5).
2. prestressing force anti-floating pile as claimed in claim 1 is characterized in that, the upper end of described steel strand (4) exceeds described pile body (1), and is fixedly connected with cushion cap (6).
3. prestressing force anti-floating pile as claimed in claim 2 is characterized in that, described pile body (1) is square structure, and the part that the upper end of described steel strand (4) exceeds described pile body (1) is not less than 25 times of described pile body (1) length of side.
4. prestressing force anti-floating pile as claimed in claim 2 is characterized in that, the top of described pile body (1) is inserted in the described cushion cap (6).
5. prestressing force anti-floating pile as claimed in claim 4 is characterized in that, the degree of depth of the top of described pile body (1) in described cushion cap (6) is 1/2nd of described cushion cap (6) height.
6. prestressing force anti-floating pile as claimed in claim 1 is characterized in that, described steel strand (4) evenly distribute along the cross section of pile body (1).
7. such as the arbitrary described prestressing force anti-floating pile of claim 1-6, it is characterized in that, described steel strand (4) adopt without bonding steel strand, or adopt and to wear leather sheath behind the ordinary steel twisted wire grease, form without bonding steel strand after being coated with rust protection agent or insulation rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320213613 CN203200751U (en) | 2013-04-25 | 2013-04-25 | Prestress anti-floating pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320213613 CN203200751U (en) | 2013-04-25 | 2013-04-25 | Prestress anti-floating pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203200751U true CN203200751U (en) | 2013-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320213613 Expired - Lifetime CN203200751U (en) | 2013-04-25 | 2013-04-25 | Prestress anti-floating pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203200751U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485337A (en) * | 2013-10-12 | 2014-01-01 | 中勘冶金勘察设计研究院有限责任公司 | Anti-floating anchor pile construction method |
| CN103526751A (en) * | 2013-10-11 | 2014-01-22 | 北京建材地质工程公司 | Pressure dispersing type prestress anti-lifting anti-floating pile and construction method |
| CN103526750A (en) * | 2013-10-11 | 2014-01-22 | 北京建材地质工程公司 | Partial-bonding tension-dispersing type prestress anti-uplift anti-floating pile and construction method |
| CN105256825A (en) * | 2014-01-24 | 2016-01-20 | 刘献刚 | Building structure of underground space |
| CN109853535A (en) * | 2019-01-18 | 2019-06-07 | 吴洪林 | A kind of concrete precast pile floating length autocompensation installation |
| CN110219323A (en) * | 2019-04-24 | 2019-09-10 | 中信国安建工集团有限公司 | A kind of anti-floating pilework and its wet season construction method in soft soil foundation |
-
2013
- 2013-04-25 CN CN 201320213613 patent/CN203200751U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103526751A (en) * | 2013-10-11 | 2014-01-22 | 北京建材地质工程公司 | Pressure dispersing type prestress anti-lifting anti-floating pile and construction method |
| CN103526750A (en) * | 2013-10-11 | 2014-01-22 | 北京建材地质工程公司 | Partial-bonding tension-dispersing type prestress anti-uplift anti-floating pile and construction method |
| CN103526750B (en) * | 2013-10-11 | 2015-08-26 | 北京建材地质工程公司 | Part adhesive pulling force decentralized prestress pulling resistant anti-floating pile |
| CN103485337A (en) * | 2013-10-12 | 2014-01-01 | 中勘冶金勘察设计研究院有限责任公司 | Anti-floating anchor pile construction method |
| CN103485337B (en) * | 2013-10-12 | 2017-01-25 | 中勘冶金勘察设计研究院有限责任公司 | Anti-floating anchor pile construction method |
| CN105256825A (en) * | 2014-01-24 | 2016-01-20 | 刘献刚 | Building structure of underground space |
| CN109853535A (en) * | 2019-01-18 | 2019-06-07 | 吴洪林 | A kind of concrete precast pile floating length autocompensation installation |
| CN109853535B (en) * | 2019-01-18 | 2023-10-27 | 吴洪林 | Automatic compensation device for floating length of concrete precast pile |
| CN110219323A (en) * | 2019-04-24 | 2019-09-10 | 中信国安建工集团有限公司 | A kind of anti-floating pilework and its wet season construction method in soft soil foundation |
| CN110219323B (en) * | 2019-04-24 | 2024-01-23 | 中信国安建工集团有限公司 | Anti-floating pile structure for soft soil foundation and water-enlarging period construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130918 |