CN106703092A - Connecting structure and method for foundation piles and bearing platform in pile foundation underpinning - Google Patents
Connecting structure and method for foundation piles and bearing platform in pile foundation underpinning Download PDFInfo
- Publication number
- CN106703092A CN106703092A CN201710145020.1A CN201710145020A CN106703092A CN 106703092 A CN106703092 A CN 106703092A CN 201710145020 A CN201710145020 A CN 201710145020A CN 106703092 A CN106703092 A CN 106703092A
- Authority
- CN
- China
- Prior art keywords
- foundation
- pile
- cushion cap
- underpinning
- foundation pile
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D37/00—Repair of damaged foundations or foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
Abstract
The invention relates to improvement in the pile foundation underpinning field, in particular to a connecting structure and method for foundation piles and a bearing platform in pile foundation underpinning. The connecting structure comprises an original pile foundation, the bearing platform, concrete, steel sleeves and anchor bolts, wherein the one or more underpinning foundation piles are arranged on one side of the original pile foundation, and underpinning foundation pile reserved main reinforcements stretch out from the underpinning foundation piles; the bearing platform is connected with the original pile foundation, and bearing platform reserved main reinforcements stretch out from the lower side of the bearing platform; the underpinning foundation pile reserved main reinforcements and the bearing platform reserved main reinforcements are wrapped by the concrete; the concrete is wrapped by the steel sleeves; and the steel sleeves and the concrete are fixed through the anchor bolts. The problem of new connection in pile foundation underpinning is solved successfully, and smooth proceeding of a reconstruction project of a bridge in a certain place is guaranteed.
Description
Technical field
The present invention relates to the improvement in pile foundation underpinning field, more particularly in pile foundation underpinning the attachment structure of foundation pile and cushion cap and
Connection method.
Background technology
It is general using pile foundation construction is first carried out when common pile foundation is connected with cushion cap, by the reserved cage bar of pile foundation and cushion cap cage bar
Between anchored, then carry out cushion cap concreting.
The major defect of prior art is：
1. underpin foundation pile often to settle, especially after its stress；
2. cushion cap is easily damaged due to unbalance stress in preparation process.
The content of the invention
The purpose of invention：In order to provide in a kind of more preferable pile foundation underpinning of effect the attachment structure of foundation pile and cushion cap and be connected
Method, specific purposes are shown in multiple substantial technological effects of specific implementation part.
In order to reach as above purpose, the present invention is adopted the following technical scheme that：
Scheme one：
The attachment structure of foundation pile and cushion cap in pile foundation underpinning, it is characterised in that comprising existing pile foundation, the existing pile foundation side
Side underpins foundation pile comprising more than one, to underpin be extended with foundation pile and underpins the reserved cage bar of foundation pile, also comprising cushion cap, the cushion cap
Existing pile foundation is connected to, cushion cap lower section is extended with the reserved cage bar of cushion cap, and also foundation pile reserves cage bar and cushion cap is reserved comprising that will underpin
The concrete that cage bar is wrapped, also comprising steel bushing, steel bushing wraps concrete, also comprising anchor bolt, the anchoring
By concrete be fixed up steel bushing by bolt.
Further technical scheme of the invention is that, comprising a circle flanging on the steel bushing, the flanging pushes against cushion cap
Lower surface.
Further technical scheme of the invention is that anchor bolt is also included on the flanging, the anchoring spiral shell by flanging and
Cushion cap is coupled together.
Further technical scheme of the invention is that, comprising the side of multiple levels on the steel bushing inwall, the side of level is embedding
Enter in concrete.
Scheme two：
The connection method of foundation pile and cushion cap in pile foundation underpinning, it is characterised in that it includes existing pile foundation, during underpining
Need first independent construction to underpin foundation pile, wait and underpin after foundation pile reaches age, then carry out cushion cap pouring, in cushion cap and between underpining foundation pile
The jack position that 50cm or so precompressed underpins foundation pile need to be reserved, using cushion cap as counterforce device, base is underpined using jack pair
Stake carries out precompressed, and it is 70 centimetres high that precompressed completes reserved location, then will underpin the reserved cage bar of foundation pile and enter with the reserved cage bar of cushion cap
After row anchor connection, it is filled using C50 slightly expanded concretes, is then entangled slightly expanded concrete with steel bushing, then use
Anchor bolt anchors steel bushing and slightly expanded concrete, it is ensured that existing pile foundation, underpin the common stress of foundation pile and cushion cap system.
Using the present invention of as above technical scheme, had the advantages that relative to prior art：In ordinary pile foundation cushion cap
On the basis of construction method, propose to underpin the independent construction with cushion cap in foundation pile, cushion cap each reserves cage bar with foundation pile is underpined, etc.
After the completion of jack precompressed, foundation pile and cushion cap cage bar are anchored in pile foundation, are filled using C50 slightly expanded concretes, this
Plant the common stress that connection can effectively ensure that pile foundation support table system.A kind of foundation pile is connected with cushion cap in pile foundation underpinning of the invention
New method structure type rationally, can meet pile foundation underpinning Practical Project demand, and can meet《Technical code for building pile foundation
JGJ94-2008》Related request, successfully solve new connectivity problem in pile foundation underpinning, it is ensured that the reconstruction project of somewhere bridge is suitable
Profit is carried out.
Brief description of the drawings
In order to further illustrate the present invention, it is further illustrated below in conjunction with the accompanying drawings：
Fig. 1 is that the present invention underpins the elevation after foundation pile construction；
Fig. 2 is the elevation after bearing platform construction of the present invention；
Fig. 3 is cushion cap of the present invention and the elevation for underpining the reserved cage bar of foundation pile；
Fig. 4 is the elevation after jack precompressed of the present invention；
Fig. 5 is the elevation that steel bushing of the present invention is reinforced；
Fig. 6 is the further improved structural representation of invention；
Wherein：1-existing pile foundation；2-underpin foundation pile；3-cushion cap；4-jack position；5-underpin the reserved master of foundation pile
Muscle；6-cushion cap reserves cage bar；7-slightly expanded concrete；8-steel bushing；9-anchor bolt；The side of 11. levels.
Specific embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that following specific embodiments are only
For illustrating the present invention rather than limitation the scope of the present invention.It should be noted that the word " preceding " for being used in description below,
" afterwards ", "left", "right", "up" and "down" refer to the direction in accompanying drawing, and word " interior " and " outward " refer respectively to direction or remote
From the direction of particular elements geometric center.
During pile foundation underpinning, change traditional construction method, first carry out underpining the construction of foundation pile, then carry out cushion cap to pour
Build, the present invention considers foundation pile and cushion cap connectivity problem during pile foundation underpinning, proposition devises one kind in pile foundation underpinning
Foundation pile is connected new method with cushion cap.
A kind of foundation pile is connected new method with cushion cap in pile foundation underpinning of the present invention, it is characterised in that：It includes original
Pile foundation, needs first independent construction to underpin foundation pile during underpining, and wherein existing pile foundation and underpins a diameter of 120 centimetres of foundation pile,
Etc. underpining after foundation pile reaches age, poured in the cushion cap for carrying out 200 centimetres of 908 cm x, 908 cm x, cushion cap with underpin base
Reserved 50cm or so precompressed is needed to underpin the jack position of foundation pile between stake, using cushion cap as counterforce device, using jack pair
Underpining foundation pile carries out precompressed, and it is 70 centimetres high that precompressed completes reserved location, then will underpin the reserved cage bar of foundation pile and be reserved with cushion cap
After cage bar carries out anchor connection, it is filled using C50 slightly expanded concretes, then with steel bushing by slightly expanded concrete set
Firmly, then with anchor bolt steel bushing and slightly expanded concrete are anchored, it is ensured that existing pile foundation, underpin the common of foundation pile and cushion cap system
Stress, makes to be located at during anchorage part in cushion cap be transformed into and underpin foundation pile, and can meet《Technical code for building pile foundation
JGJ94-2008》Related request.
More specifically it is summarized as：
It includes existing pile foundation 1, needs first independent construction to underpin foundation pile 2 during underpining, and wherein existing pile foundation 1 and underpins
A diameter of 1.2m of foundation pile 2, waits and underpins after foundation pile 2 reaches age, is poured in the cushion cap 3 for carrying out 9.08m × 9.08m × 2m,
Cushion cap 3 and the jack position 4 for needing between foundation pile 2 reserved 50cm or so precompressed to underpin foundation pile 2 is underpined, using cushion cap 3 as counter-force
Device, underpining foundation pile 2 using jack pair carries out precompressed, and it is that 70cm is high that precompressed completes reserved location, then will underpin foundation pile pre-
After staying the reserved cage bar 6 of cage bar 5 and cushion cap and carrying out anchor connection, it is filled using C50 slightly expanded concretes 7, then uses steel bushing
Cylinder 8 entangles slightly expanded concrete 7, then anchors steel bushing 8 and slightly expanded concrete 7 with anchor bolt 9, it is ensured that existing pile foundation 1,
The common stress of foundation pile 2 and the system of cushion cap 3 is underpined, is made to be located at during anchorage part in cushion cap 3 be transformed into and underpin foundation pile 2,
And can meet《Technical code for building pile foundation JGJ94-2008》Related request.
In a creative way, each effect of the above is individually present, moreover it is possible to the combination of the above results is completed with a nested structure.
It should be noted that multiple schemes that this patent is provided include the basic scheme of itself, it is separate, not mutually
Restriction, but it can also be mutually combined in the case where not conflicting, and reach multiple effects and realize jointly.
General principle of the invention, principal character and advantages of the present invention has been shown and described above.The technology of this area
Personnel should be recognized that the present invention is not limited to the above embodiments, and simply this hair is illustrated described in above-described embodiment and specification
Bright principle, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Both fallen within claimed scope with improving.
Claims (5)
1. in pile foundation underpinning foundation pile and cushion cap attachment structure, it is characterised in that comprising existing pile foundation (2), the existing pile foundation
(2) avris underpins foundation pile comprising more than one, to underpin be extended with foundation pile and underpins the reserved cage bar (5) of foundation pile, also comprising cushion cap,
The cushion cap is connected to existing pile foundation, and cushion cap lower section is extended with the reserved cage bar of cushion cap, also comprising will underpin the reserved cage bar (5) of foundation pile
The concrete wrapped with the reserved cage bar (6) of cushion cap, also comprising steel bushing, steel bushing wraps concrete, also comprising anchoring
By concrete be fixed up steel bushing by bolt, the anchor bolt.
2. in pile foundation underpinning as claimed in claim 1 foundation pile and cushion cap attachment structure, it is characterised in that on the steel bushing
Comprising a circle flanging, the flanging pushes against the lower surface of cushion cap.
3. in pile foundation underpinning as claimed in claim 2 foundation pile and cushion cap attachment structure, it is characterised in that on the flanging
Comprising anchor bolt, the anchoring spiral shell couples together flanging and cushion cap.
4. in pile foundation underpinning as claimed in claim 1 foundation pile and cushion cap attachment structure, it is characterised in that in the steel bushing
Comprising the side of multiple levels on wall, the side of level is embedded in concrete.
5. in pile foundation underpinning foundation pile and cushion cap connection method, it is characterised in that it includes existing pile foundation, is needed during underpining
First independent construction underpins foundation pile, waits and underpin after foundation pile reaches age, then carry out cushion cap pouring, and is needed in cushion cap and between underpining foundation pile
Reserved 50cm or so precompressed underpins the jack position of foundation pile, using cushion cap as counterforce device, foundation pile is underpined using jack pair
Precompressed is carried out, it is 70 centimetres high that precompressed completes reserved location, then will underpin the reserved cage bar of foundation pile is carried out with the reserved cage bar of cushion cap
After anchor connection, it is filled using C50 slightly expanded concretes, is then entangled slightly expanded concrete with steel bushing, then use anchor
Fixing bolt anchors steel bushing and slightly expanded concrete, it is ensured that existing pile foundation, underpin the common stress of foundation pile and cushion cap system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710145020.1A CN106703092A (en) | 2017-03-13 | 2017-03-13 | Connecting structure and method for foundation piles and bearing platform in pile foundation underpinning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710145020.1A CN106703092A (en) | 2017-03-13 | 2017-03-13 | Connecting structure and method for foundation piles and bearing platform in pile foundation underpinning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106703092A true CN106703092A (en) | 2017-05-24 |
Family
ID=58917022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710145020.1A Pending CN106703092A (en) | 2017-03-13 | 2017-03-13 | Connecting structure and method for foundation piles and bearing platform in pile foundation underpinning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106703092A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555173A (en) * | 2017-09-26 | 2019-04-02 | 安徽皖通高速公路股份有限公司 | A kind of separate type bridge integrally lifts stake reinforcement means |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05118047A (en) * | 1991-10-29 | 1993-05-14 | Kawasaki Steel Corp | Constructing method for foundation structure |
| JP2006089929A (en) * | 2004-09-21 | 2006-04-06 | Shimizu Corp | Pile head connection structure and method of connecting the same |
| CN101067303A (en) * | 2007-02-13 | 2007-11-07 | 铁道第二勘察设计院 | Active pile foundation underpinning structure and constructing method thereof |
| CN202073111U (en) * | 2011-05-04 | 2011-12-14 | 江苏建华管桩有限公司 | Connection structure of a concrete pile and a bearing platform |
| CN203821877U (en) * | 2014-04-23 | 2014-09-10 | 安徽城建检测科技有限公司 | Concrete column reinforcement device |
| CN106351270A (en) * | 2016-11-16 | 2017-01-25 | 贵州正业工程技术投资有限公司 | Self-locking steel pile structure for deviation correction and reinforcement of underpinned pile foundation |
| CN206570853U (en) * | 2017-03-13 | 2017-10-20 | 兰州铁道设计院有限公司 | The attachment structure of foundation pile and cushion cap in pile foundation underpinning |
-
2017
- 2017-03-13 CN CN201710145020.1A patent/CN106703092A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05118047A (en) * | 1991-10-29 | 1993-05-14 | Kawasaki Steel Corp | Constructing method for foundation structure |
| JP2006089929A (en) * | 2004-09-21 | 2006-04-06 | Shimizu Corp | Pile head connection structure and method of connecting the same |
| CN101067303A (en) * | 2007-02-13 | 2007-11-07 | 铁道第二勘察设计院 | Active pile foundation underpinning structure and constructing method thereof |
| CN202073111U (en) * | 2011-05-04 | 2011-12-14 | 江苏建华管桩有限公司 | Connection structure of a concrete pile and a bearing platform |
| CN203821877U (en) * | 2014-04-23 | 2014-09-10 | 安徽城建检测科技有限公司 | Concrete column reinforcement device |
| CN106351270A (en) * | 2016-11-16 | 2017-01-25 | 贵州正业工程技术投资有限公司 | Self-locking steel pile structure for deviation correction and reinforcement of underpinned pile foundation |
| CN206570853U (en) * | 2017-03-13 | 2017-10-20 | 兰州铁道设计院有限公司 | The attachment structure of foundation pile and cushion cap in pile foundation underpinning |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555173A (en) * | 2017-09-26 | 2019-04-02 | 安徽皖通高速公路股份有限公司 | A kind of separate type bridge integrally lifts stake reinforcement means |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |
|
| RJ01 | Rejection of invention patent application after publication |