CN201128916Y - Active pile foundation underpinning structure - Google Patents
Active pile foundation underpinning structure Download PDFInfo
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- CN201128916Y CN201128916Y CNU2007200802826U CN200720080282U CN201128916Y CN 201128916 Y CN201128916 Y CN 201128916Y CN U2007200802826 U CNU2007200802826 U CN U2007200802826U CN 200720080282 U CN200720080282 U CN 200720080282U CN 201128916 Y CN201128916 Y CN 201128916Y
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- pile
- underpins
- pile foundation
- underpin
- stake
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Abstract
The utility model provides an active underpinning structure of pile foundation, which comprises an underpinning novel pile with a pile cap and an underpinning beam plate. The pile cap of the underpinning novel pile is provided with a lifting jack that can be used for actively pre-lifting and unloading overfreight on the underpinning beam plate, so as to transmit the existing pre-load on columns and piles required to be underpinned to the newly built underpinning structure; thus the force transfer of the unpinning pile foundation can be realized. The active underpinning structure can automatically control the deformation of upper buildings required to be underpinned, so as to suit the underpinning of the pile foundation under the conditions with large axial force.
Description
Technical field:
The utility model relates to a kind of active pile foundation underpinning structure, belong to underpin, pile foundation underpinning field.
Background technology:
When under existing building, building underground construction such as subway, usually to handle, implement pile foundation underpinning, just build underpinning structure by newly executing to existing pile foundation, support post, stake or the basis that need underpin, and the load that it bore is transformed into this newly executes on the underpinning structure of building.The pile foundation underpinning engineering in past generally adopts the carrying scope (as root pile, raft plate etc.) that enlarges pile foundation, perhaps disposable post, stake, the basic structural slab (beam) that links to each other and the formed new construction of new stake that underpins with needs that construct, the post that reduces to underpin, stake or basis stressed, the conversion of realizable force.This traditional pile foundation underpinning structure form has the following disadvantages:
1. the distribution of newly repairing power between structure and the post that need underpin, stake or basis is indeterminate;
2. the building deformation that need underpin when underpining can not be controlled in advance;
3. the building deformation that needs after underpining to underpin can not readjust;
4. only be adapted to existing stressed little post, stake or basic underpining.
The utility model content:
In view of above reason, the purpose of this utility model is for a kind of distortion that can realize the upper building that need underpin from main control being provided, adapting to the active pile foundation underpinning structure of the pile foundation underpinning under the macro-axis power situation.
The purpose of this utility model is achieved in that
The utility model active pile foundation underpinning structure, comprise that there is the new stake of underpining of pile cover at the top, is positioned at the beam slab that underpins that underpins new stake pile cover top, place the jacking jack that underpins on the new stake pile cover underpining new stake and underpin to have between beam slab, can underpin beam slab by the jacking jack pair and carry out initiatively overload pre-jacking and unloading, thereby the existing load in early stage that bears in the post that needs are underpined, the stake, be delivered to and newly execute on the underpinning structure of building, realization underpins the conversion of the power of pile foundation.
Above-mentioned pile cover and underpin the steel plate cushion block is arranged respectively on the opposite position on the beam slab.
Above-mentioned with the pile cover corresponding position of jacking jack and underpin beam slab the steel plate cushion block is arranged respectively.
Above-mentioned pile cover and underpin and be provided with the adjustable foolproof apparatus that highly can regulate between beam slab has the bottom to be fixed on steel nut on the pile cover in the adjustable foolproof apparatus, top is the Steel Bolt that cooperates with the steel nut.
Above-mentioned with pile cover adjustable foolproof apparatus correspondence position and underpin the steel plate cushion block is arranged respectively on the beam slab.
Above-mentioned pile cover and underpin connecting reinforcement and corresponding reinforcing bar connector are arranged on the beam slab.
The post that can underpin at the needs corresponding with underpining beam slab, stake dig out that teeth groove, plantation shear key apply vertically, transverse prestress between the surface.
The utility model underpins between beam (plate) and the post that need underpin, the stake and connects into stressed integral body by the shearing resistance contact, the shearing resistance contact is that teeth groove, plantation shear key are dug out in the post, the stake surface that underpin at the needs corresponding with underpining beam (plate), and applies vertical, horizontal prestressing force by docking point and form.
Underpin new stake pile cover is set, the steel plate cushion block is arranged on the pile cover, to place jacking jack, adjustable foolproof apparatus.Utilize the jacking jack initiatively to underpin that beam (plate) forms post that the whole needs that are connected underpin, overload pre-jacking, off-load, the existing load that bears shifts on newly-built underpinning structure in the post that realization need underpin, the stake; Utilize adjustable foolproof apparatus, strengthen the structural stability in the underpinning construction process.
Underpin new stake pile cover and underpin beam (plate) and reserved connecting reinforcement and corresponding reinforcing bar connector (steel bushing), in the conversion of finishing the power that underpins pile foundation, after the amputation stake, connecting reinforcement is coupled together with reinforcing bar connector (steel bushing), and to underpining new stake pile cover and underpining that the space builds up integral body with concrete casting between beam (plate).
The utility model can be realized the distortion of the upper building that need underpin from main control, adapts to the pile foundation underpinning under the macro-axis power situation.
Description of drawings:
Fig. 1 is the utility model active pile foundation underpinning structure schematic diagram.
Fig. 2 is provided with, plants the shear key schematic diagram for the shearing resistance contact teeth groove that underpins between beam (plate) and the post that need underpin, the stake.
Fig. 3 is the A-A sectional drawing of Fig. 2.
Fig. 4 arranges schematic diagram for underpining beam (plate) longitudinal prestressing cable wire.
Fig. 5 is the B-B sectional view of Fig. 4.
Fig. 6 is the I-I sectional view of Fig. 4.
Fig. 7 is the C-C sectional view of Fig. 6.
Fig. 8 arranges schematic diagram for underpining beam (plate) transverse prestressed reinforcing steel bar.
Fig. 9 is for underpining new stake pile cover and underpining new and be connected the contact schematic diagram.
Figure 10 is the D-D sectional view of Fig. 8.
Figure 11 is the vertical view of Figure 10.
The specific embodiment:
Referring to Fig. 1～Fig. 9, underpin new stake 2 in the utility model, underpin beam slab 3.Underpin new stake 2 and can adopt hand excavated pile or mechanical hole building stake according to construction operation space; The post that need underpin, stake 1 are that post, a stake surface by underpining at needs is provided with shearing resistance teeth groove 8, plantation shear key (reinforcing bar, steel member) 9 corresponding to the shearing resistance contact 4 that underpins beam (plate) 3 places, and to this contact apply longitudinal prestressing 10, transverse prestress 11 is realized;
Referring to Figure 10, Figure 11, above-mentioned underpin on the new top stake pile cover 6 placed jacking jack 5 and adjustable foolproof apparatus 12, and underpins beam (plate) at the new stake of underpining of its relevant position pile cover, gone up steel plate cushion block 13, i.e. 13a, 13b, 13c, 13d pre-buried.Have respectively in the adjustable foolproof apparatus 12 be fixed on steel nut 12a on steel plate cushion block 13c, the 13d and that work in coordination,, Steel Bolt 12b.
Referring to Figure 10, Figure 11, it is above-mentioned that to underpin new stake be not once to execute to build up integral body with the contact that underpins beam (plate), be by underpin new pile head and with it the beam (plate) that underpins of correspondence position go up to reserve connecting reinforcement 14, post, the pile load that need underpin in the later stage is transformed into newly to be executed on the underpinning structure of building, after blocking old stake 7, connect by reinforcing bar connector (as steel bushing) 15 again, and concreting forms integral body.
Above-mentioned adjustable foolproof apparatus 12 is perfectly safe in order to ensure in the pile foundation underpinning process, its operation will be with loading the jack synchronization lifting, the use that underpins the stable of beam body and load jack is played the security insurance effect, and these three foolproof apparatuss will for good and all place in the steel bar concrete connector between joist, new stake.
The job practices of this active underpinned pile based structures is as follows:
1, underpins new stake 2 constructions:, adopt hand excavated pile or mechanism's pore-forming stake according to construction operation space;
2, at the post that underpins corresponding to the needs that underpin beam (plate) 3 positions, stake 1 surface cutter teeth groove 8, plantation shear key 9;
3, underpin the stake top application worker pile cover 6 of new stake 2, and pre-embedded steel slab cushion block 13a, 13b, reserve connecting reinforcement 14;
4, make prestressing force and underpin beam (plate) 2, and pre-embedded steel slab cushion block 13c, 13d, reservation connecting reinforcement 14;
5, at the adjustable foolproof apparatus 12 of the last installation of steel plate cushion block 13b, 13d that underpins new stake pile cover 6 and truss girder (plate) 2, and debugging;
6, underpin steel plate cushion block 13a, the last installation of the 13c jacking jack 5 of new stake pile cover 6 and joist (plate) 2, and debugging;
7, utilize 5 classifications of jacking jack overload pre-jacking, be offloaded to and cut a pile load, and regulate adjustable foolproof apparatus 12 with jacking, unloading, make to underpin new stake 2 and underpin beam (plate) 3 and remain reliable power transmission;
8, the old stake 7 of substep amputation is finished load and is changed to new stake by old stake;
9, will underpin new stake pile cover 6 and the connecting reinforcement 14 that underpins between the beam (plate) 3, connect, will underpin new pile cover 6 again and underpin space concreting between the beam (plate) 3, finish underpining engineering by reinforcing bar connector (steel bushing) 15;
10, take out jacking jack 5, offer follow-up engineering and use.
The foregoing description is that foregoing of the present utility model is further described, but this should be interpreted as that the scope of the above-mentioned theme of the utility model only limits to the foregoing description.All technology that realizes based on foregoing all belong to scope of the present utility model.
Claims (6)
1. active pile foundation underpinning structure is characterized in that comprising that there is the new stake of underpining of pile cover at the top, is positioned at the beam slab that underpins that underpins new stake pile cover top, underpins new the jacking jack on the pile cover with underpining to have between beam slab to place underpining new stake.
2. active pile foundation underpinning structure as claimed in claim 1 is characterized in that pile cover and underpins that the steel plate cushion block is arranged respectively on the opposite position on the beam slab.
3. active pile foundation underpinning structure as claimed in claim 1 or 2 is characterized in that with the pile cover of the corresponding position of jacking jack and underpins beam slab that the steel plate cushion block is arranged respectively.
4. active pile foundation underpinning structure as claimed in claim 1 or 2, it is characterized in that at pile cover and underpin being provided with the adjustable foolproof apparatus that highly can regulate between beam slab, have the bottom to be fixed on steel nut on the pile cover in the adjustable foolproof apparatus, top is the Steel Bolt that cooperates with the steel nut.
5. active pile foundation underpinning structure as claimed in claim 4 is characterized in that with the pile cover of adjustable foolproof apparatus correspondence position and underpins that the steel plate cushion block is arranged respectively on the beam slab.
6. active pile foundation underpinning structure as claimed in claim 1 or 2 is characterized in that pile cover and underpins that connecting reinforcement and corresponding reinforcing bar connector are arranged on the beam slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200802826U CN201128916Y (en) | 2007-07-13 | 2007-07-13 | Active pile foundation underpinning structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200802826U CN201128916Y (en) | 2007-07-13 | 2007-07-13 | Active pile foundation underpinning structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201128916Y true CN201128916Y (en) | 2008-10-08 |
Family
ID=40016754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200802826U Expired - Lifetime CN201128916Y (en) | 2007-07-13 | 2007-07-13 | Active pile foundation underpinning structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201128916Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644294A (en) * | 2012-04-10 | 2012-08-22 | 广东天竟建设有限公司 | Foundation underpinning method around foundation pit |
| CN105970961A (en) * | 2016-05-20 | 2016-09-28 | 中国电建集团华东勘测设计研究院有限公司 | Safe pile cutting method for foundation pit enclosed with cast-in-place piles |
| CN106638668A (en) * | 2016-11-17 | 2017-05-10 | 中国建筑第八工程局有限公司 | Underpinning system between underground connection passage and power pipeline and construction method of underpinning system |
| CN108425683A (en) * | 2018-03-28 | 2018-08-21 | 兰州理工大学 | A kind of assembled pile foundation conversion tunnel structure and construction method |
| CN111550261A (en) * | 2020-04-29 | 2020-08-18 | 中铁二院工程集团有限责任公司 | Railway tunnel bottom bulging deformation treatment structure and construction method |
| CN112227232A (en) * | 2020-10-16 | 2021-01-15 | 浙江大学 | Pier upright post underpinning method of pier-beam consolidation continuous beam bridge |
| CN113774972A (en) * | 2021-09-28 | 2021-12-10 | 中国矿业大学 | Reinforcing method for overload punching damage of independent foundation under column |
-
2007
- 2007-07-13 CN CNU2007200802826U patent/CN201128916Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644294A (en) * | 2012-04-10 | 2012-08-22 | 广东天竟建设有限公司 | Foundation underpinning method around foundation pit |
| CN105970961A (en) * | 2016-05-20 | 2016-09-28 | 中国电建集团华东勘测设计研究院有限公司 | Safe pile cutting method for foundation pit enclosed with cast-in-place piles |
| CN105970961B (en) * | 2016-05-20 | 2018-08-07 | 中国电建集团华东勘测设计研究院有限公司 | A kind of bored concrete pile goes along with sb. to guard him deep pit monitor and cuts piling method |
| CN106638668A (en) * | 2016-11-17 | 2017-05-10 | 中国建筑第八工程局有限公司 | Underpinning system between underground connection passage and power pipeline and construction method of underpinning system |
| CN106638668B (en) * | 2016-11-17 | 2019-07-30 | 中国建筑第八工程局有限公司 | System and its construction method are underpined between subterranean communication road and power pipeline |
| CN108425683A (en) * | 2018-03-28 | 2018-08-21 | 兰州理工大学 | A kind of assembled pile foundation conversion tunnel structure and construction method |
| CN111550261A (en) * | 2020-04-29 | 2020-08-18 | 中铁二院工程集团有限责任公司 | Railway tunnel bottom bulging deformation treatment structure and construction method |
| CN112227232A (en) * | 2020-10-16 | 2021-01-15 | 浙江大学 | Pier upright post underpinning method of pier-beam consolidation continuous beam bridge |
| CN112227232B (en) * | 2020-10-16 | 2021-09-28 | 浙江大学 | Pier upright post underpinning method of pier-beam consolidation continuous beam bridge |
| CN113774972A (en) * | 2021-09-28 | 2021-12-10 | 中国矿业大学 | Reinforcing method for overload punching damage of independent foundation under column |
| CN113774972B (en) * | 2021-09-28 | 2022-06-07 | 中国矿业大学 | Reinforcing method for overload punching damage of independent foundation under column |
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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: 20081008 |