CN109763509A - A kind of buildings pile underpinning structure and its support and change method - Google Patents
A kind of buildings pile underpinning structure and its support and change method Download PDFInfo
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- CN109763509A CN109763509A CN201910152816.9A CN201910152816A CN109763509A CN 109763509 A CN109763509 A CN 109763509A CN 201910152816 A CN201910152816 A CN 201910152816A CN 109763509 A CN109763509 A CN 109763509A
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- pile
- steel pipe
- pipe fitting
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- pile foundation
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Abstract
The present invention relates to Building Engineering Designs and technical field of construction, more specifically, it is related to a kind of buildings pile underpinning structure and its support and change method, its key points of the technical solution are that: including more pile bases provided around the structure foundation and the percussion component for tapping pile foundation；More flexible cables are provided between the top of the more pile foundations, the more flexible cable arrangements reticulate, and the both ends of flexible cable are anchored in the pile foundation；The pile foundation includes steel pipe fitting, inserts in the concrete being perfused inside several reinforcing bars in steel pipe fitting and steel pipe fitting along steel pipe fitting length direction；The percussion component includes that the top of the steel pipe fitting extends downwardly the pile monkey of setting along its inner wall；The pile monkey is fixedly connected by the rope of hoist engine, the pile monkey taps pile foundation by the hoist engine vertical-lift or whereabouts, the convenience during pile foundation underpinning is improved, construction volume is small and the pile foundation of formation is installed during underpining with good anti-pressure ability.
Description
Technical field
The present invention relates to Building Engineering Designs and technical field of construction, more specifically, it relates to a kind of buildings pile
Underpinning structure and its support and change method.
Background technique
With the development of social economy and the increasingly improvement of living standards of the people, requirement day of the people to itself living conditions
Benefit raising, the requirement to building is higher and higher, and built building is often because settle excessive, itself inclination, cracking and neighbour
The influence of nearly engineering construction and the normal use and safety for influencing building, current such event cause Social Dispute often.
Foundation underpinning is carried out for built building, improves the function of building original base, controls building settlement, inclination and cracking,
Reducing neighbouring influence of the engineering construction to built construction object is a new developing direction in foundation engineering field.
It is all that present building two sides are first driven piles, then from side but in the past using beam type or board-like support and change method
Towards excavating below the bottom of foundation, plate or beam do in side under the foundation, and are underpined upper load to two sides pile foundation by plate or beam,
The most of operations of this support and change method is all carried out in subsurface, and excavation heavy workload, long in time limit, working space is limited, engineering
Quality is not easy to guarantee；And building is in foundation bearing capacity deficiency, it usually needs piling base, mode of driving piles in the prior art are past
Steel pipe pile crown is directly got in ground toward being, then to after drilling at ground into hole concrete perfusion row at bored concrete pile, perfusion
Stake has certain bearing capacity, but since it is in right cylinder shape, resistance to compression can be limited.Therefore it needs to improve.
Summary of the invention
In view of the deficiencies of the prior art, the object of the present invention is to provide a kind of buildings pile underpinning structure and its sides of underpining
Method improves the convenience during pile foundation underpinning, and construction volume is small and the pile foundation of formation is installed during underpining with good
Good anti-pressure ability.
Above-mentioned technical purpose of the invention has the technical scheme that a kind of buildings pile underpinning dress
It sets, including more pile bases provided around the structure foundation and the percussion component for tapping pile foundation；The more pile foundations
Top between be provided with more flexible cables, the more flexible cables arrangements reticulate, and the both ends of flexible cable are anchored in the stake
On base；The pile foundation includes steel pipe fitting, inserts in several reinforcing bars and steel pipe fitting in steel pipe fitting along steel pipe fitting length direction
The concrete of portion's perfusion；The percussion component includes that the top of the steel pipe fitting extends downwardly the pile monkey of setting along its inner wall；Institute
It states pile monkey to be fixedly connected by the rope of hoist engine, the pile monkey is by the hoist engine vertical-lift or falls to pile foundation progress
It taps.
By using above-mentioned technical proposal, the purpose of pile sinking is carried out to pile foundation using the promotion and whereabouts of pile monkey, pile monkey is logical
It crosses hoist engine vertical-lift or falls and tapped, improve the convenience of pile foundation installation；Meanwhile using compound rope base structure,
It is underpined so that building can be realized, and constructs and underpin process operation side compared with board-like or beam type using flexible rope base structure
Just, construction volume is small, facilitates the progress of construction.
Preferably, the steel pipe fitting is successively spliced from bottom to top by bottom tube and several slip casting short tubes, the bottom tube
Injected hole is provided with on slip casting short tube；One end of the slip casting short tube is provided with external screw thread, and the other end is provided with and outer spiral shell
The internal screw thread that line matches, the slip casting short tube are fixedly connected with the top of bottom tube.
By using above-mentioned technical proposal, realized in the way of threaded connection detachable between adjacent slip casting short tube
Connection, and then can be selected according to the length that specific construction demand carries out slip casting short tube, improve the convenience of operation.
Preferably, the bottom of the bottom tube is welded with coniform shoe.
By using above-mentioned technical proposal, the setting of shoe is inserted into soil layer convenient for steel pipe fitting, and then is improved pile monkey and tapped
The effect of steel pipe fitting insertion soil layer when steel pipe fitting.
Preferably, the shoe is circumferentially provided with multiple guide holes of perforation shoe interior wall, and multiple guide holes are equal
The even surface for being distributed in shoe；One end of the reinforcing bar is provided with bending part, and the bending part is through the guide hole to extension
The outer surface of shoe out.
By using above-mentioned technical proposal, the bending part of reinforcing bar extends the outer surface of shoe by guide hole, is pressed into steel
Concrete in pipe fitting flows out in conjunction with the bending part of reinforcing bar from injected hole, and then improves the crushing resistance of pile foundation.
Preferably, the adjacent two slip casting short tubes are respectively first pipe and second pipe, the first pipe setting
There is externally threaded one end to be arranged towards second pipe setting internal thread end in the conical surface.
By using above-mentioned technical proposal, the setting of the conical surface is inserted into second pipe convenient for the end of first pipe is revolved
Turn installation.
Preferably, the inner sidewall of the second pipe is equipped with cascaded surface, and the cascaded surface is equipped with seal washer, and described the
The end that one pipeline thread is plugged in second pipe is contacted with the seal washer.
By using above-mentioned technical proposal, when first pipe is installed in second pipe, first pipe grafting enters the second pipe
End in road contacts seal washer, and generates elasticity to seal washer and squeeze, and installs first pipe more firm
Gu and the leakproofness between the first pipe also added and second pipe.
Preferably, the spacing of adjacent two pile foundations is not more than 2m.
By using above-mentioned technical proposal, connect the flexible cable between pile foundation compact, puller system tenses flexible cable for bridge
It is more preferable that beam or building hold up effect.
In order to solve the above technical problems, the present invention also provides a kind of buildings pile underpinning methods, comprising the following steps:
S1. according to design drawing, live unwrapping wire positioning is carried out to pile foundation；
S2. shoveling base tunnel is carried out along the vertical direction at a certain distance from the outer edge of existing building；
S3. it excavates operation hole: the existing building bottom of foundation part below of base tunnel is excavated to building direction level
Formation operation is cheated at the pile foundation position of design；
S4. the vertically-mounted steel pipe fitting at the pile foundation position of the design in operation hole, with the above lotus of the existing building bottom of foundation
Carrying is counter-force, and using hoist engine vertical-lift or falling taps pile monkey to steel pipe fitting, and steel pipe fitting is vertically pressed into base tunnel
In the foundation soil of bottom；
S5. hoist engine is removed, concrete and vibration compacting are filled in the cavity of all steel pipe fittings, steel tube concrete is formed and underpins
Stake；
S6. it is implanted into reinforcing bar in the contact site on concrete filled steel tube underpinned pile Yu existing building basis, is hardened to concrete coagulation
For pile foundation；
S7., flexible cable is installed, and flexible cable cloth reticulates at the top of pile foundation, is tensioned flexible cable with tensioner and by building support
Firmly, flexible cable both ends anchor；
S8. original basis is handled, original basis is removed, increases necessary facility, and builds new basis；
S9. on the basis of building being placed in newly.
By using above-mentioned technical proposal, hoist engine control pile monkey carries out percussion installation to pile foundation, installs in pile foundation to soil
After layer, reinforcing bar is placed in slip casting short tube, the bending part of reinforcing bar extends the outer surface of shoe by guide hole, fills to concrete
It will expose after dress and wrapped up with the reinforcing bar of shoe outer surface, to form bigger pile foundation, improve the crushing resistance of pile foundation；Together
When, it using compound rope base structure, is underpined so that building can be realized, and using flexible rope base structure compared with board-like or beam type
It constructs and underpins that process is easy to operate, and construction volume is small, facilitate the progress of construction.
In conclusion the invention has the following advantages:
1, using the promotion of pile monkey and fall to pile foundation carry out pile sinking purpose, pile monkey by hoist engine vertical-lift or under drop into
Row taps, and improves the convenience of pile foundation installation；
2, it using compound rope base structure, is underpined so that building can be realized, and using flexible rope base structure and board-like or beam type
Process is easy to operate, and construction volume is small compared to constructing and underpin, and facilitates the progress of construction；
3, when first pipe is installed in second pipe, first pipe grafting enters the end in second pipe and abuts to seal washer
Cooperation, and elasticity is generated to seal washer and is squeezed, the first pipe for installing first pipe stronger, and also adding
Leakproofness between second pipe.
Detailed description of the invention
Fig. 1 is the planar structure schematic diagram of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the embodiment of the present invention；
Fig. 3 is pile foundation structural schematic diagram of the embodiment of the present invention；
Fig. 4 is the assembly relation schematic diagram of first pipe and second pipe in the embodiment of the present invention.
In figure: 1, building；2, flexible cable；3, pile foundation；31, first pipe；32, second pipe；4, pile monkey；5, bottom tube；
6, shoe；7, rope；8, hoist engine；9, injected hole；10, reinforcing bar；11, guide hole；12, seal washer.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
A kind of buildings pile underpinning device, referring to Fig.1, including more pile bases 3 provided around 1 ground of building with
And the percussion component for tapping pile foundation 3；More flexible cables 2, and more flexible cables 2 are provided between the top of more pile bases 3
Interlaced arrangement reticulates；Meanwhile the both ends of flexible cable 2 are anchored in pile foundation 3.
Specifically, referring to Figures 1 and 2, if pile foundation 3 inserts in steel pipe fitting including steel pipe fitting, along steel pipe fitting length direction
Dry root reinforcing bar 10 and the concrete being perfused inside steel pipe fitting；Top that component includes steel pipe fitting is tapped along its inner wall to downward
Stretch the pile monkey 4 of setting；Pile monkey 4 is fixedly connected by the rope 7 of hoist engine 8, and pile monkey 4 passes through 8 vertical-lift of hoist engine or whereabouts.
The device when in use, the purpose of pile sinking is carried out using the promotion and whereabouts of pile monkey 4 to pile foundation 3, and pile monkey 4 passes through volume
It raises 8 vertical-lift of machine or falls and carry out tapping pile foundation 3, improve the convenience of the installation of pile foundation 3；Meanwhile utilizing compound rope support knot
Structure so that building 1 can be realized and underpin, and constructs and underpins process compared with board-like or beam type using 2 holder structure of flexible cable
Easy to operate, construction volume is small, facilitates the progress of construction.
Specifically, successively docking is assembled from bottom to top by bottom tube 5 and several slip casting short tubes for steel pipe fitting referring to Fig. 2 and Fig. 3
It forms, several injected holes 9 is provided in bottom tube 5 and slip casting short tube；One end of slip casting short tube is provided with external screw thread, the other end
It is provided with the internal screw thread matched with external screw thread, slip casting short tube and the top of bottom tube 5 are fixedly connected on one by welding
It rises.Realize being detachably connected between adjacent slip casting short tube in the way of threaded connection, and then can be according to specifically applying
Work demand carries out the length selection of slip casting short tube, improves the convenience of operation.
Referring to Fig. 3 and Fig. 4, in the present embodiment, adjacent two slip casting short tubes are respectively first pipe 31 and second pipe
32, and first pipe 31 is provided with externally threaded one end and internal thread end is arranged in conical surface setting towards second pipe 32.
The setting of the conical surface is inserted into second pipe 32 convenient for the end of first pipe 31 and carries out rotation installation.
Specifically, the inner sidewall of second pipe 32 is equipped with cascaded surface, cascaded surface is equipped with seal washer 12, first pipe 31
The end that screw thread is plugged in second pipe 32 is contacted with seal washer 12.When first pipe 31 is installed on second pipe 32
When interior, 31 grafting of first pipe enters the end in second pipe 32 and contacts to seal washer 12, and produces to seal washer 12
Raw elasticity squeezes, the first pipe 31 and second pipe 32 for installing first pipe 31 stronger, and also adding it
Between leakproofness.
Referring to Fig. 3 and Fig. 4, the bottom of bottom tube 5 is welded with coniform shoe 6.The setting of shoe 6 is convenient for steel pipe fitting insertion
In soil layer, and then improve the effect of steel pipe fitting insertion soil layer when pile monkey 4 taps steel pipe fitting.
Meanwhile the spacing of adjacent two piles base 3 is not more than 2m, and the flexible cable 2 between pile foundation 3 is made to connect compact, puller system
Tense flexible cable 2 bridge or the picking-up of building 1 effect is more preferable.
In addition, the circumferential multiple guide holes 11 for being provided with perforation 6 interior wall of shoe of shoe 6, multiple guide holes 11 uniformly divide
It is distributed in the surface of shoe 6；One end of reinforcing bar 10 is provided with bending part, and bending part is through guide hole 11 to extending the outer of shoe 6
Surface.The bending part of reinforcing bar 10 extends the outer surface of shoe 6 by guide hole 11, is pressed into concrete in steel pipe fitting from slip casting
Outflow is in conjunction with the bending part of reinforcing bar 10 in hole 9, and then improves the crushing resistance of pile foundation 3.
A kind of buildings pile underpinning method, referring to Figures 1 and 2, specifically includes the following steps:
S1. according to design drawing, live unwrapping wire positioning is carried out to pile foundation 3；
S2. shoveling base tunnel is carried out along the vertical direction at a certain distance from the outer edge of existing building 1；
S3. it excavates operation hole: 1 bottom of foundation of the existing building part below of base tunnel is excavated to 1 direction level of building
Formation operation is cheated to 3 position of pile foundation of design；
S4. the vertically-mounted steel pipe fitting at 3 position of pile foundation of the design in operation hole, more than 1 bottom of foundation of existing building
Load is counter-force, and using 8 vertical-lift of hoist engine or falling taps pile monkey 4 to steel pipe fitting, and steel pipe fitting is vertically pressed into
In the foundation soil of base tunnel bottom；
S5. hoist engine 8 is removed, concrete and vibration compacting are filled in the cavity of all steel pipe fittings, steel tube concrete is formed and underpins
Stake；
S6. it is implanted into reinforcing bar 10 in the contact site on 1 basis of concrete filled steel tube underpinned pile and existing building, it is hard to concrete coagulation
Turn to pile foundation 3；
S7., flexible cable 2 is installed, and 2 cloth of flexible cable reticulates at the top of pile foundation 3, flexible cable 2 is tensioned and will be built with tensioner
Object 1 is held, the anchoring of 2 both ends of flexible cable；
S8. original basis is handled, original basis is removed, increases necessary facility, and builds new basis；
S9. on the basis of building 1 being placed in newly.
Hoist engine 8 controls pile monkey 4 and carries out percussion installation to pile foundation 3, and after the installation to soil layer of pile foundation 3, reinforcing bar 10 is placed in
In slip casting short tube, the bending part of reinforcing bar 10 extends the outer surface of shoe 6 by guide hole 11, will expose after concrete is filling
It is wrapped up with the reinforcing bar 10 of 6 outer surface of shoe, to form bigger pile foundation 3, improves the crushing resistance of pile foundation 3；Meanwhile it utilizing
Compound rope base structure so that building 1 can be realized and underpin, and is constructed compared with board-like or beam type using 2 holder structure of flexible cable
Easy to operate with process is underpined, construction volume is small, facilitates the progress of construction.
Above-described embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
It can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as in this hair
All by the protection of Patent Law in bright scope of the claims.
Claims (8)
1. a kind of buildings pile underpinning device, it is characterised in that: including more pile bases provided around building (1) ground
(3) and the percussion component for tapping pile foundation (3)；More flexible cables are provided between the top of the more pile foundations (3)
(2), more flexible cable (2) arrangements reticulate, and the both ends of flexible cable (2) are anchored on the pile foundation (3)；The pile foundation
(3) include steel pipe fitting, insert in perfusion inside several reinforcing bars (10) in steel pipe fitting and steel pipe fitting along steel pipe fitting length direction
Concrete；The percussion component includes that the top of the steel pipe fitting extends downwardly the pile monkey (4) of setting along its inner wall；The stake
Hammer (4) is fixedly connected by the rope (7) of hoist engine (8), the pile monkey (4) by the hoist engine (8) vertical-lift or under
It falls and pile foundation (3) is tapped.
2. a kind of buildings pile underpinning device according to claim 1, it is characterised in that: the steel pipe fitting is by bottom tube
(5) it is successively spliced from bottom to top with several slip casting short tubes, is provided with injected hole on the bottom tube (5) and slip casting short tube
(9)；One end of the slip casting short tube is provided with external screw thread, and the other end is provided with the internal screw thread matched with external screw thread, the note
Slurry short tube is fixedly connected with the top of bottom tube (5).
3. a kind of buildings pile underpinning device according to claim 2, it is characterised in that: the bottom of the bottom tube (5)
It is welded with coniform shoe (6).
4. a kind of buildings pile underpinning device according to claim 3, it is characterised in that: the shoe (6) circumferentially sets
Multiple guide holes (11) of perforation shoe (6) interior wall are equipped with, multiple guide holes (11) are uniformly distributed in the table of shoe (6)
Face；One end of the reinforcing bar (10) is provided with bending part, and the bending part is through the guide hole (11) to extending shoe (6)
Outer surface.
5. a kind of buildings pile underpinning device according to claim 2, it is characterised in that: adjacent two slip casting is short
Pipe is respectively first pipe (31) and second pipe (32), and the first pipe (31) is provided with externally threaded one end towards second
Pipeline (32) is arranged internal thread end and is arranged in the conical surface.
6. a kind of buildings pile underpinning device according to claim 5, it is characterised in that: the second pipe (32)
Inner sidewall is equipped with cascaded surface, and the cascaded surface is equipped with seal washer (12), and first pipe (31) screw thread is plugged in second
End in pipeline (32) is contacted with the seal washer (12).
7. a kind of buildings pile underpinning device according to claim 6, it is characterised in that: adjacent two pile foundations
(3) spacing is not more than 2m.
8. a kind of buildings pile underpinning method, which comprises the following steps:
S1. according to design drawing, live unwrapping wire positioning is carried out to pile foundation (3)；
S2. shoveling base tunnel is carried out along the vertical direction at a certain distance from the outer edge of existing building (1)；
S3. operation hole is excavated: existing building (1) bottom of foundation part below of base tunnel is horizontal to building (1) direction
Formation operation at pile foundation (3) position of design is excavated to cheat；
S4. the vertically-mounted steel pipe fitting at pile foundation (3) position of the design in operation hole, with existing building (1) bottom of foundation
The above load is counter-force, and using hoist engine (8) vertical-lift or falling taps pile monkey (4) to steel pipe fitting, by steel pipe fitting
In the foundation soil of vertical indentation base tunnel bottom；
S5. hoist engine (8) are removed, concrete and vibration compacting is filled in the cavity of all steel pipe fittings, form steel tube concrete support
Change stake；
S6. reinforcing bar (10) are implanted into the contact site on concrete filled steel tube underpinned pile Yu existing building (1) basis, it is solidifying to concrete
Knot is hardened to pile foundation (3)；
S7. flexible cable (2) are installed at the top of pile foundation (3), and flexible cable (2) cloth reticulates, are tensioned flexible cable (2) with tensioner
And building (1) is held, the anchoring of flexible cable (2) both ends；
S8. original basis is handled, original basis is removed, increases necessary facility, and builds new basis；
S9. on the basis of building (1) being placed in newly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910152816.9A CN109763509A (en) | 2019-02-28 | 2019-02-28 | A kind of buildings pile underpinning structure and its support and change method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910152816.9A CN109763509A (en) | 2019-02-28 | 2019-02-28 | A kind of buildings pile underpinning structure and its support and change method |
Publications (1)
| Publication Number | Publication Date |
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| CN109763509A true CN109763509A (en) | 2019-05-17 |
Family
ID=66457339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910152816.9A Pending CN109763509A (en) | 2019-02-28 | 2019-02-28 | A kind of buildings pile underpinning structure and its support and change method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0687777A1 (en) * | 1994-06-16 | 1995-12-20 | Heiwerken P. van 't Wout Waddinxveen B.V. | Method for arranging concrete piles in the ground |
| CN100999900A (en) * | 2006-01-09 | 2007-07-18 | 立基工程有限公司 | Bottom impacting type steel pipe concrete pole and construction method thereof |
| CN101806040A (en) * | 2010-03-25 | 2010-08-18 | 徐国彬 | Underpinning device and method for bridge and building |
| CN201756694U (en) * | 2010-07-05 | 2011-03-09 | 天津建岩岩土工程有限公司 | Simple type filing pile hammering hole-forming device |
| CN102425166A (en) * | 2011-09-09 | 2012-04-25 | 苏州力高建筑工程技术有限公司 | Novel pile driving method and equipment for foundation construction treatment |
| CN108193686A (en) * | 2017-11-27 | 2018-06-22 | 嘉兴市旭峰混凝土有限公司 | A kind of steel pipe grouting method |
-
2019
- 2019-02-28 CN CN201910152816.9A patent/CN109763509A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0687777A1 (en) * | 1994-06-16 | 1995-12-20 | Heiwerken P. van 't Wout Waddinxveen B.V. | Method for arranging concrete piles in the ground |
| CN100999900A (en) * | 2006-01-09 | 2007-07-18 | 立基工程有限公司 | Bottom impacting type steel pipe concrete pole and construction method thereof |
| CN101806040A (en) * | 2010-03-25 | 2010-08-18 | 徐国彬 | Underpinning device and method for bridge and building |
| CN201756694U (en) * | 2010-07-05 | 2011-03-09 | 天津建岩岩土工程有限公司 | Simple type filing pile hammering hole-forming device |
| CN102425166A (en) * | 2011-09-09 | 2012-04-25 | 苏州力高建筑工程技术有限公司 | Novel pile driving method and equipment for foundation construction treatment |
| CN108193686A (en) * | 2017-11-27 | 2018-06-22 | 嘉兴市旭峰混凝土有限公司 | A kind of steel pipe grouting method |
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Application publication date: 20190517 |