CN108589739A - It is anti-buckling to support the modularization foundation pit supporting system being combined with beam string - Google Patents
It is anti-buckling to support the modularization foundation pit supporting system being combined with beam string Download PDFInfo
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- CN108589739A CN108589739A CN201810549378.5A CN201810549378A CN108589739A CN 108589739 A CN108589739 A CN 108589739A CN 201810549378 A CN201810549378 A CN 201810549378A CN 108589739 A CN108589739 A CN 108589739A
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- Prior art keywords
- buckling
- girder steel
- string
- foundation pit
- support
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
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Abstract
The present invention is a kind of modularization foundation pit supporting system that anti-buckling support is combined with beam string；It is characterized in that：String girder steel purlin structure setting is opened on the inside of supporting pile structure, and a string girder steel purlin structure includes stretching rope and anchored end, and stretching rope traverses a string girder steel purlin structure and the tension of the stretching rope is adjusted by anchored end；Buckling-resistant support structure is connect with a string girder steel purlin structure for side in supporting pile structure, and the other end is then connect by connecting bolt with hydraulic jack；The base end of hydraulic jack is connect with the inside of the string girder steel purlin structure of the other side in supporting pile structure again by bolt；Multiple tracks is arranged in parallel in buckling-resistant support structure in foundation pit.This support system is simple in structure, flexibly adjustable and solid and reliable, is a kind of economy and all good foundation pit support plan of adaptability.
Description
Technical field
It is specifically a kind of anti-buckling to support the module that is combined with beam string the present invention relates to the foundation pit construction field of building
Change foundation pit supporting system.
Background technology
With the continuous development of urban construction, the development and utilization of the underground space is had become and solves urban land anxiety
Inevitable choice, the engineerings such as underground parking, subway, tunnel can encounter pattern foundation pit supporting structure and Excavation Problems.Currently, common base
It cheats there are many support patterns, such as：Diaphram wall, soil nail wall, high-pressure rotary jet grouting pile, steel sheet pile, cast-in-situ bored pile, SMW engineering methods etc.,
It is provided to ensure the stability problem during foundation pit construction.But the engineering accident that instability of foundation pit destroys is still frequent occurrence,
And this destroy is typically moment, be on the one hand due to geotechnical engineering complexity and it is uncertain it is larger caused by, it is another
Aspect is also due to foundation pit early warning and monitoring measure deficiency, or finds that foundation pit has and destroy sign or trend, does not have reinforcing
Time and condition.
Foundation pit periphery generally use concrete-pile, diaphram wall or steel sheet pile are enclosed as retaining design in order to reduce
Shield expense, usual foundation pit inside can be arranged support, certain sidewise restraint be done to peripheral structure, to reduce building enclosure
Deformation and sectional dimension.Common support system is mostly concrete support or conventional steel brace.Concrete support good rigidity, but
It is that earth excavation needs brokenly chisel after the completion, causes material that cannot recycle, and the duration is longer, cost is higher；Though bracing members can
Remove recycling, but support successively decrease substantially at 2 power relationships with length as its stability bearing capacity of compression member, support cost with
The increase of foundation pit width can sharply increase, and bracing members unstable failure is brittle break again, will very after its initial unstability occurs
Reach capacity bearing capacity soon, and pre-warning time may be caused too short, and pattern foundation pit supporting structure has little time to reinforce, and personnel have little time the great of escape
Safety accident.
Invention content
It is an object of the invention to overcome the defect of above-mentioned support system, it is firm and safe and reliable to provide a kind of supporting construction
Modularization foundation pit supporting system.
In order to achieve the above object, the invention is realized in this way：
A kind of modularization foundation pit supporting system that anti-buckling support is combined with beam string, including supporting pile structure, string girder steel
Purlin structure, buckling-resistant support structure and hydraulic jack；Wherein, it opens string girder steel purlin structure and has twice and be horizontally placed on and enclose
The inside of fender pile structure, a string girder steel purlin structure includes stretching rope and anchored end, and stretching rope traverses a string girder steel purlin structure
And the tension of the stretching rope is adjusted by anchored end；One end of buckling-resistant support structure passes through in bolt and supporting pile structure
The inside connection of the string girder steel purlin structure of side, the other end are then connected by connecting the jacking of bolt and hydraulic jack
End；The base end of hydraulic jack is connected on the inside of the string girder steel purlin structure of the other side in supporting pile structure again by bolt
It connects；Multiple tracks is arranged in parallel in buckling-resistant support structure in foundation pit.
The modularization foundation pit supporting system that the anti-buckling support is combined with beam string, supporting pile structure use Larsen
The form of steel sheet pile or cast-in-place concrete pile or diaphram wall is built.
This modularization foundation pit supporting system has the following advantages：
1, the lateral purlin of support pile uses beam string form, can increase substantially purlin girder steel bearing capacity, reduces foundation pit deformation,
And zipper prestressing force size can be adjusted at any time, haved the function that according to practical soil pressure situation adjustment member internal force and deformation,
With very high flexibility and adaptability.This is because soil pressure is divided into active earth pressure, passive earth pressure and carth pressure at rest
Power, theoretically active earth pressure is minimum, and passive earth pressure is maximum, and earth pressure at rest falls between, and active earth pressure is with base
It is engineering specifications to cheat to support pile lateral movement, using pattern foundation pit supporting structure lateral displacement as cost, achievees the effect that reduce soil pressure.
Due to the randomness of geological conditions, many situations can cause the calculated value of soil pressure not to be inconsistent with actual conditions；Overarm by
Compression bar and prestressed cable are added under common beam, changes the stress and deformation behaviour of beam, prestressed cable can greatly improve purlin
The bearing capacity of girder steel；By adjusting prestressed Suo Li and then purlin kiln crown is controlled, controls soil pressure and lateral displacement of pit
Size ensures that foundation pit does not fail because soil pressure is excessive or sidesway is excessive.It can as support pile purlin using prestressing force beam string structure
A kind of economy and all preferable technical solution of adaptability are provided.
2, the inner support of fender post uses anti-buckling supporting form, can avoid the unstability rapid damage of conventional steel brace, carries
For longer early warning and consolidation time.Although this is because although anti-buckling support is a kind of energy dissipation for building support,
Its tension and compression bearing capacity is suitable, and unstable failure does not occur, strength failure only occurs, and bearing capacity is surrendered when anti-buckling support reaches it
When, the yield force can be maintained and larger axial plastic deformation occurs, without the rapid drawdown of bearing capacity.The present invention is exactly profit
It is obtained valuable with this kind of mechanical property of anti-buckling support to have the function that extend foundation pit neutrality time to rupture
Personnel's departure time and consolidation time.
3, the end of anti-buckling support uses hydraulic jack, adjustable support internal force, to reduce lateral displacement of pit, it will usually
Bracing members are applied with certain prestressing force, it can be by the way that jack top lift be adjusted flexibly to adapt to the need of foundation pit deformation and safety
It wants.
Description of the drawings
Fig. 1 is the vertical view of this modularization foundation pit supporting system.
Fig. 2 is side cutaway view of the present invention.
Fig. 3 is the present invention string girder steel purlin organigram.
Specific implementation mode
It is further illustrated the present invention below by way of specific embodiment.
As shown in Figure 1, Figure 2 and Figure 3, a kind of modularization foundation pit supporting system that anti-buckling support is combined with beam string,
Including supporting pile structure 1, string girder steel purlin structure 2, buckling-resistant support structure 3 and hydraulic jack 4；Wherein, string girder steel is opened
Purlin structure 2 has twice and is horizontally placed on the inside of supporting pile structure 1, and string girder steel purlin structure 2 includes stretching rope 5 and anchor
Fixed end 6, stretching rope 5 traverses a string girder steel purlin structure 2 and the tension of the stretching rope 5 is adjusted by anchored end 6；It is anti-buckling
One end of support construction 3 is connect by bolt with the inside of the string girder steel purlin structure 2 of side in supporting pile structure 1, another
End then passes through the jacking connecting pin of connection bolt and hydraulic jack 4；The base end of hydraulic jack 4 by bolt again with fender post
The inside connection of the string girder steel purlin structure 2 of the other side in structure 1；Buckling-resistant support structure 3 is arranged in parallel more in foundation pit
Road.
The modularization foundation pit supporting system that the anti-buckling support is combined with beam string, supporting pile structure 1 is using drawing
The form of gloomy steel sheet pile or cast-in-place concrete pile or diaphram wall is built.
This modularization foundation pit supporting system has the following advantages：
1, the lateral purlin of support pile uses beam string form, can increase substantially purlin girder steel bearing capacity, reduces foundation pit deformation,
And zipper prestressing force size can be adjusted at any time, haved the function that according to practical soil pressure situation adjustment member internal force and deformation,
With very high flexibility and adaptability.This is because soil pressure is divided into active earth pressure, passive earth pressure and carth pressure at rest
Power, theoretically active earth pressure is minimum, and passive earth pressure is maximum, and earth pressure at rest falls between, and active earth pressure is with base
It is engineering specifications to cheat to support pile lateral movement, using pattern foundation pit supporting structure lateral displacement as cost, achievees the effect that reduce soil pressure.
Due to the randomness of geological conditions, many situations can cause the calculated value of soil pressure not to be inconsistent with actual conditions；Overarm by
Compression bar and prestressed cable are added under common beam, changes the stress and deformation behaviour of beam, prestressed cable can greatly improve purlin
The bearing capacity of girder steel；By adjusting prestressed Suo Li and then purlin kiln crown is controlled, controls soil pressure and lateral displacement of pit
Size ensures that foundation pit does not fail because soil pressure is excessive or sidesway is excessive.It can as support pile purlin using prestressing force beam string structure
A kind of economy and all preferable technical solution of adaptability are provided.
2, the inner support of fender post uses anti-buckling supporting form, can avoid the unstability rapid damage of conventional steel brace, carries
For longer early warning and consolidation time.Although this is because although anti-buckling support is a kind of energy dissipation for building support,
Its tension and compression bearing capacity is suitable, and unstable failure does not occur, strength failure only occurs, and bearing capacity is surrendered when anti-buckling support reaches it
When, the yield force can be maintained and larger axial plastic deformation occurs, without the rapid drawdown of bearing capacity.The present invention is exactly profit
It is obtained valuable with this kind of mechanical property of anti-buckling support to have the function that extend foundation pit neutrality time to rupture
Personnel's departure time and consolidation time.
3, the end of anti-buckling support uses hydraulic jack, adjustable support internal force, to reduce lateral displacement of pit, it will usually
Bracing members are applied with certain prestressing force, it can be by the way that jack top lift be adjusted flexibly to adapt to the need of foundation pit deformation and safety
It wants.
Claims (2)
1. a kind of modularization foundation pit supporting system that anti-buckling support is combined with beam string, which is characterized in that including fender post
Structure, string girder steel purlin structure, buckling-resistant support structure and hydraulic jack；Wherein, opening string girder steel purlin structure has twice
And it is horizontally placed on the inside of supporting pile structure, a string girder steel purlin structure includes stretching rope and anchored end, and stretching rope, which traverses, to be opened
The tension of string girder steel purlin structure and the stretching rope is adjusted by anchored end；One end of buckling-resistant support structure passes through bolt
It is connect with the inside of the string girder steel purlin structure of side in supporting pile structure, the other end is then by connecting bolt and hydraulic jack
The jacking connecting pin on top；The base end of hydraulic jack passes through the bolt string girder steel purlin with the other side in supporting pile structure again
The inside of structure connects；Multiple tracks is arranged in parallel in buckling-resistant support structure in foundation pit.
2. the modularization foundation pit supporting system that anti-buckling support according to claim 1 is combined with beam string, feature
It is：Supporting pile structure is built in the form of Larsen steel sheet pile or cast-in-place concrete pile or diaphram wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810549378.5A CN108589739A (en) | 2018-05-31 | 2018-05-31 | It is anti-buckling to support the modularization foundation pit supporting system being combined with beam string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810549378.5A CN108589739A (en) | 2018-05-31 | 2018-05-31 | It is anti-buckling to support the modularization foundation pit supporting system being combined with beam string |
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| Publication Number | Publication Date |
|---|---|
| CN108589739A true CN108589739A (en) | 2018-09-28 |
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| CN201810549378.5A Pending CN108589739A (en) | 2018-05-31 | 2018-05-31 | It is anti-buckling to support the modularization foundation pit supporting system being combined with beam string |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111549785A (en) * | 2020-03-23 | 2020-08-18 | 宁波工程学院 | Support system and construction method thereof |
| CN112257146A (en) * | 2020-10-10 | 2021-01-22 | 无锡市市政设施建设工程有限公司 | Method for realizing deep foundation pit excavation support based on BIM |
| CN113136873A (en) * | 2021-04-16 | 2021-07-20 | 南通大学 | Out-pit diagonal-pulling type supporting structure system and construction method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050054406A (en) * | 2003-12-04 | 2005-06-10 | 이창남 | Strengthening method of continuous girder and beam applying post tensioning |
| CN101294389A (en) * | 2008-02-22 | 2008-10-29 | 中建国际建设有限公司 | Steel shotcrete support internal force self-compensation, displacement control system and control method |
| CN204163223U (en) * | 2014-04-22 | 2015-02-18 | 中国电子工程设计院 | The anti-buckling support of triple round steel pipe |
| CN104532850A (en) * | 2014-12-17 | 2015-04-22 | 厦门科思泰建筑科技有限公司 | Foundation pit supporting system |
| CN106836497A (en) * | 2016-12-22 | 2017-06-13 | 浙江精工钢结构集团有限公司 | A kind of pair of rope separate type truss string structure and its construction method |
| CN206625237U (en) * | 2017-03-09 | 2017-11-10 | 中国建筑第八工程局有限公司 | The adaptability connecting node of bracing members and steel purlin in foundation ditch |
| CN208280145U (en) * | 2018-05-31 | 2018-12-25 | 上海宝冶集团有限公司 | It is anti-buckling to support the modularization foundation pit supporting system combined with beam string |
-
2018
- 2018-05-31 CN CN201810549378.5A patent/CN108589739A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050054406A (en) * | 2003-12-04 | 2005-06-10 | 이창남 | Strengthening method of continuous girder and beam applying post tensioning |
| CN101294389A (en) * | 2008-02-22 | 2008-10-29 | 中建国际建设有限公司 | Steel shotcrete support internal force self-compensation, displacement control system and control method |
| CN204163223U (en) * | 2014-04-22 | 2015-02-18 | 中国电子工程设计院 | The anti-buckling support of triple round steel pipe |
| CN104532850A (en) * | 2014-12-17 | 2015-04-22 | 厦门科思泰建筑科技有限公司 | Foundation pit supporting system |
| CN106836497A (en) * | 2016-12-22 | 2017-06-13 | 浙江精工钢结构集团有限公司 | A kind of pair of rope separate type truss string structure and its construction method |
| CN206625237U (en) * | 2017-03-09 | 2017-11-10 | 中国建筑第八工程局有限公司 | The adaptability connecting node of bracing members and steel purlin in foundation ditch |
| CN208280145U (en) * | 2018-05-31 | 2018-12-25 | 上海宝冶集团有限公司 | It is anti-buckling to support the modularization foundation pit supporting system combined with beam string |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111549785A (en) * | 2020-03-23 | 2020-08-18 | 宁波工程学院 | Support system and construction method thereof |
| CN112257146A (en) * | 2020-10-10 | 2021-01-22 | 无锡市市政设施建设工程有限公司 | Method for realizing deep foundation pit excavation support based on BIM |
| CN112257146B (en) * | 2020-10-10 | 2023-12-26 | 无锡市市政设施建设工程有限公司 | Method for realizing deep foundation pit excavation supporting based on BIM |
| CN113136873A (en) * | 2021-04-16 | 2021-07-20 | 南通大学 | Out-pit diagonal-pulling type supporting structure system and construction method thereof |
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