CN106400810A - Foundation pit support structure and construction method thereof - Google Patents
Foundation pit support structure and construction method thereof Download PDFInfo
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- CN106400810A CN106400810A CN201610240442.2A CN201610240442A CN106400810A CN 106400810 A CN106400810 A CN 106400810A CN 201610240442 A CN201610240442 A CN 201610240442A CN 106400810 A CN106400810 A CN 106400810A
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- foundation pit
- construction
- pit supporting
- stake
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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)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention provides a foundation pit support structure and a construction method thereof. The foundation pit support structure is used in a building project of the coastal backfill area. The foundation pit support structure comprises at least one SMW construction method pile, a pre-stressed anchor cable and an enclosure ring beam. The enclosure ring beam is built on the multiple SMW construction method piles in the horizontal direction in a closed manner. The pre-stressed anchor cable anchors the SMW construction method piles and the enclosure ring beam. According to the geological condition characteristics of coastal areas, the foundation pit support safety is ensured, the foundation pit support effect is guaranteed, and meanwhile the construction efficiency is improved.
Description
Technical field
The application is related to mechanical field, the foundation pit supporting construction of architectural engineering in more particularly, to a kind of coastal backfill region and
Its construction method.
Background technology
In coastal backfill region construction, one kind of foundation pit supporting project goes along with sb. to guard him gear earthwork formula, domestic in the past on edge
In the Foundation Pit Construction in sea backfill region, frequently with Punching Borehole Cast-in-place Concrete Pile or using SMW engineering method stake (Soil Mixing
Wall) mode with reference to internal support of foundation pit makees pattern foundation pit supporting structure.
When in the past pattern foundation pit supporting structure being made using Punching Borehole Cast-in-place Concrete Pile, building enclosure more firm it is difficult to cut, for also needing in the future
There is larger adverse effect at the position excavated, and which need to separately add high pressure rotary churning pile or cement mixing method makees sealing, also
Substantial amounts of reinforcing bar and concrete need to be expended, cost is higher；And when adopting the support pattern of SMW engineering method stake+internal support of foundation pit, foundation ditch
Inside often have the structure such as a large amount of lattice columns and the support of steel concrete, have impact on earth excavation engineering and underground engineering to a certain extent
The working face of each machinery in construction.
Content of the invention
The application technical problem to be solved is, according to coastal area geological condition feature, provides a kind of pattern foundation pit supporting structure knot
Structure and its construction method, while to guarantee pattern foundation pit supporting structure safety, to ensure pattern foundation pit supporting structure effect, improve efficiency of construction.
For achieving the above object, a kind of foundation pit supporting construction on the one hand being provided according to the application, described pattern foundation pit supporting structure knot
Structure be used for coastal backfill region architectural engineering, described foundation pit supporting construction include at least one SMW engineering method stake, prestress anchorage cable and
Go along with sb. to guard him collar tie beam；Wherein,
Described go along with sb. to guard him collar tie beam and close in the horizontal direction build by laying bricks or stones in some described SMW engineering method stakes, described prestress anchorage cable pair
Described SMW engineering method stake and described collar tie beam of going along with sb. to guard him are anchored.
Further, described prestress anchorage cable includes anchoring section and free segment；Wherein, described anchoring section be fixed on described in build
Build in the rock mass stability of engineering underground, free segment one end of described prestress anchorage cable is connected with described anchoring section, the other end and company
Be connected to SMW engineering method stake described in one and described go along with sb. to guard him collar tie beam build junction by laying bricks or stones.
Further, described prestress anchorage cable is Recyclable anchor rope.
Further, described SMW engineering method stake includes cement mixing method and is inserted in the H profile steel in cement mixing method.
Further, described foundation pit supporting construction also includes：Plain concrete load transfering strip, described plain concrete load transfering strip setting
Between described SMW engineering method stake and the base plate of described architectural engineering.
Further, described plain concrete load transfering strip along described SMW engineering method stake to the transverse width in described base plate direction is
400 millimeters～600 millimeters.
A kind of construction method of the foundation pit supporting construction on the other hand being provided according to the application, described foundation pit supporting construction is used
In the architectural engineering in coastal backfill region, described construction method includes：
Construct some SMW engineering method stakes；
Construction forms and does not apply prestressed anchor cable；
Collar tie beam is gone along with sb. to guard him in construction formation, described go along with sb. to guard him collar tie beam and close in the horizontal direction build by laying bricks or stones in some described SMW engineering method stakes；
Apply prestressing force to not applying prestressed anchor cable, to be formed for described SMW engineering method stake with described go along with sb. to guard him collar tie beam
The prestress anchorage cable being anchored.
Further, described prestress anchorage cable includes anchoring section and free segment；Wherein, described anchoring section be fixed on described in build
Build in the rock mass stability of engineering underground, free segment one end of described prestress anchorage cable is connected with described anchoring section, the other end and company
Be connected to SMW engineering method stake described in one and described go along with sb. to guard him collar tie beam build junction by laying bricks or stones.
Further, described SMW engineering method stake includes cement mixing method and is inserted in H profile steel in cement mixing method,
Described construction method also includes：After the completion of the basement engineering of described architectural engineering, reclaim described prestress anchorage cable and described H
Shaped steel.
Further, described construction method also includes：Apply between described SMW engineering method stake and the base plate of described architectural engineering
Work forms plain concrete load transfering strip.
Compared with prior art, herein described foundation pit supporting construction and its construction method have the advantage that：
1st, combine the support pattern of prestress anchorage cable due to employing SMW engineering method stake, evaded and having been made using Punching Borehole Cast-in-place Concrete Pile
During supporting, the later stage is difficult to situation about cutting, and for the engineering of Develop by stages, the underground structure beneficial to different exploitation periods is carried out even
Logical；
2nd, to SMW engineering method stake and go along with sb. to guard him collar tie beam and anchor using prestress anchorage cable, it is to avoid arrange using in foundation ditch
When lattice column and steel concrete support, the working faces of all kinds of machineries are had a negative impact so that in earth excavation and follow-up underground engineering
Vehicle during construction and all kinds of construction machinery have more flexible operating space；
3rd, adopt SMW engineering method stake, wherein, H profile steel can be recycled after the completion of basement structure construction, prestressing force
Anchor cable may also be employed Recyclable anchor rope, improves the utilization rate of resource, reduces cost.
Brief description
By reading the detailed description that non-limiting example is made made with reference to the following drawings, other of the application
Feature, objects and advantages will become more apparent upon：
Fig. 1 illustrates a kind of foundation pit supporting construction schematic diagram on the one hand providing according to the application；
Fig. 2 illustrates a kind of construction method of the foundation pit supporting construction according to the application another aspect offer.
In accompanying drawing, same or analogous reference represents same or analogous part.
Specific embodiment
Below in conjunction with the accompanying drawings the application is described in further detail.
The application be intended in line with according to coastal area geological condition feature it is ensured that pattern foundation pit supporting structure safety is it is ensured that pattern foundation pit supporting structure
Effect, improves efficiency of construction, it is proposed that " SMW engineering method stake with together with prestress anchorage cable " in foundation pit supporting project work progress
Foundation pit supporting construction and construction method.
Fig. 1 illustrates a kind of foundation pit supporting construction on the one hand providing according to the application, and described foundation pit supporting construction is used for edge
The architectural engineering in sea backfill region, described foundation pit supporting construction includes at least one SMW engineering method stake 100, prestress anchorage cable 200 and encloses
Guard ring beam 300；Wherein,
Described go along with sb. to guard him collar tie beam 300 and close in the horizontal direction build by laying bricks or stones in some described SMW engineering method stakes 100, described prestressing force
Anchor cable 200 anchors to described SMW engineering method stake 100 and described collar tie beam 100 of going along with sb. to guard him.
Preferably, described foundation pit supporting construction is located at below nature terrace.
Further, described prestress anchorage cable 200 includes anchoring section 200a and free segment 200b；Wherein, described anchoring section
200a is fixed in the rock mass stability of described architectural engineering underground, described free segment 200b one end and described anchoring section 200a phase
Even, the other end be connected to SMW engineering method stake 100 described in one and described go along with sb. to guard him collar tie beam 300 build junction by laying bricks or stones.
Preferably, described prestress anchorage cable 200 is Recyclable anchor rope.
Preferably, described SMW engineering method stake 100 includes cement mixing method 100b and is inserted in the H in cement mixing method
Shaped steel 100a.Preferably, described SMW engineering method stake is to carry out drilling to certain depth at the scene with fountain type drilling mixer, with
When at drill bit spray cement system hardening agent and with foundation soil mix and blend repeatedly, then take overlap to take between each construction cell
Connect construction, then do not tie firmly front insertion H profile steel or steel plate as its stress reinforcing material in soil cement mixture, hard to cement knot,
Just formed and include cement mixing method 100b together and be inserted in H profile steel 100a in cement mixing method, have necessarily strong
Degree and rigidity, continuous whole, jointless underground wall body stake.
Additionally, described collar tie beam more than 300 of going along with sb. to guard him adopts cast-in-situ steel reinforced concrete, in order to improve the overall empty of foundation pit supporting construction
Between rigidity, increase globality, building is played with the effect of waist hoop, improves shearing resistance, tensile strength, and prevent due to ground uneven
Sedimentation, earthquake or other cracking destructions to house for larger vibration load, its effect is main also have adjust it may happen that inequality
Even sedimentation, strengthens the globality on basis, also makes subgrade reaction evenly point, also has circle beam action and waterproof and dampproof simultaneously
Effect.
Further, described foundation pit supporting construction also includes：Plain concrete load transfering strip 600, described plain concrete load transfering strip
600 are arranged between described SMW engineering method stake 100 and the base plate 500 of described architectural engineering.
Further, described plain concrete load transfering strip 600 is along described SMW engineering method stake 100 to the horizontal stroke in described base plate 500 direction
It is 400 millimeters～600 millimeters to width.Preferably 500 millimeters.The effect of described plain concrete load transfering strip 600 is in H profile steel
Transfer the load on the concrete of basement base plate that can stablize bearing load when reclaiming with the prestress anchorage cable playing anchorage effect,
To form new mechanical balance.
Fig. 2 illustrates a kind of construction method of the foundation pit supporting construction according to the application another aspect offer, and described foundation ditch props up
Protection structure is used for the architectural engineering in coastal backfill region, and described construction method includes：
Step S01：Construct some SMW engineering method stakes；
Step S02：Construction forms and does not apply prestressed anchor cable；
Step S03：Collar tie beam is gone along with sb. to guard him in construction formation, described go along with sb. to guard him collar tie beam and close in the horizontal direction build by laying bricks or stones in some described SMW
In engineering method stake；
Step S04：Apply prestressing force to not applying prestressed anchor cable, to be formed for described SMW engineering method stake and described
Go along with sb. to guard him the prestress anchorage cable that collar tie beam is anchored.
Further, described prestress anchorage cable includes anchoring section and free segment；Wherein, described anchoring section be fixed on described in build
Build in the rock mass stability of engineering underground, free segment one end of described prestress anchorage cable is connected with described anchoring section, the other end and company
Be connected to SMW engineering method stake described in one and described go along with sb. to guard him collar tie beam build junction by laying bricks or stones.
Further, described SMW engineering method stake includes cement mixing method and is inserted in H profile steel in cement mixing method,
Described construction method also includes：After the completion of the basement engineering of described architectural engineering, reclaim described prestress anchorage cable and described H
Shaped steel.
Further, described construction method also includes：Step S05 (does not indicate), in described SMW engineering method stake and described building
Between the base plate of engineering, construction forms plain concrete load transfering strip.Further, described plain concrete load transfering strip is along described SMW engineering method
Stake is 400 millimeters～600 millimeters to the transverse width in described base plate direction, that is, between described SMW engineering method stake and described base plate
Distance.Preferably 500 millimeters.The effect of plain concrete load transfering strip is to recover with the prestressed anchor playing anchorage effect in H profile steel
Time receiving transfers the load on the concrete of basement base plate that can stablize bearing load, to form new mechanical balance.
Compared with prior art, herein described foundation pit supporting construction and its construction method have the advantage that：
1st, combine the support pattern of prestress anchorage cable due to employing SMW engineering method stake, evaded and having been made using Punching Borehole Cast-in-place Concrete Pile
During supporting, the later stage is difficult to situation about cutting, and for the engineering of Develop by stages, the underground structure beneficial to different exploitation periods is carried out even
Logical；
2nd, to SMW engineering method stake and go along with sb. to guard him collar tie beam and anchor using prestress anchorage cable, it is to avoid arrange using in foundation ditch
When lattice column and steel concrete support, the working faces of all kinds of machineries are had a negative impact so that in earth excavation and follow-up underground engineering
Vehicle during construction and all kinds of construction machinery have more flexible operating space；
3rd, adopt SMW engineering method stake, wherein, H profile steel can be recycled after the completion of basement structure construction, prestressing force
Anchor cable may also be employed Recyclable anchor rope, improves the utilization rate of resource, reduces cost.
It is obvious to a person skilled in the art that the application is not limited to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of spirit herein or essential characteristic, the application can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, scope of the present application is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the application.Any reference in claim should not be considered as limiting involved claim.
Obviously, those skilled in the art can carry out the various changes and deformation essence without deviating from the present invention to the present invention
God and scope.So, if these modifications to the present invention and modification belong to the model of the claims in the present invention and its equivalent technologies
Within enclosing, then the present invention is also intended to comprise these variations and modification.
Claims (10)
1. a kind of foundation pit supporting construction it is characterised in that described foundation pit supporting construction be used for coastal backfill region architectural engineering,
Described foundation pit supporting construction includes at least one SMW engineering method stake, prestress anchorage cable and goes along with sb. to guard him collar tie beam；Wherein,
Described go along with sb. to guard him collar tie beam and close in the horizontal direction build by laying bricks or stones in some described SMW engineering method stakes, described prestress anchorage cable is to described
SMW engineering method stake and described collar tie beam of going along with sb. to guard him are anchored.
2. foundation pit supporting construction according to claim 1 it is characterised in that described prestress anchorage cable include anchoring section and from
By section；Wherein,
Described anchoring section is fixed in the rock mass stability of described architectural engineering underground, free segment one end of described prestress anchorage cable with
Described anchoring section is connected, the other end be connected to SMW engineering method stake described in one and described go along with sb. to guard him collar tie beam build junction by laying bricks or stones.
3. foundation pit supporting construction according to claim 1 and 2 is it is characterised in that described prestress anchorage cable is recyclable anchor
Rope.
4. foundation pit supporting construction according to claim 1 is it is characterised in that described SMW engineering method stake includes Soil-cement
Stake and be inserted in the H profile steel in cement mixing method.
5. foundation pit supporting construction according to claim 1 is it is characterised in that described foundation pit supporting construction also includes：
Plain concrete load transfering strip, described plain concrete load transfering strip is arranged at the base plate of described SMW engineering method stake and described architectural engineering
Between.
6. foundation pit supporting construction according to claim 4 is it is characterised in that described plain concrete load transfering strip is along described SMW
Engineering method stake is 400 millimeters～600 millimeters to the transverse width in described base plate direction.
7. a kind of construction method of foundation pit supporting construction is it is characterised in that described foundation pit supporting construction is used for coastal backfill region
Architectural engineering, described construction method includes：
Construct some SMW engineering method stakes；
Construction forms and does not apply prestressed anchor cable；
Collar tie beam is gone along with sb. to guard him in construction formation, described go along with sb. to guard him collar tie beam and close in the horizontal direction build by laying bricks or stones in some described SMW engineering method stakes；
Apply prestressing force to not applying prestressed anchor cable, to be formed for carrying out to described SMW engineering method stake and described collar tie beam of going along with sb. to guard him
The prestress anchorage cable of anchoring.
8. construction method according to claim 7 is it is characterised in that described prestress anchorage cable includes anchoring section and freedom
Section；Wherein,
Described anchoring section is fixed in the rock mass stability of described architectural engineering underground, free segment one end of described prestress anchorage cable with
Described anchoring section is connected, the other end be connected to SMW engineering method stake described in one and described go along with sb. to guard him collar tie beam build junction by laying bricks or stones.
9. the construction method according to claim 7 or 8 is it is characterised in that described SMW engineering method stake includes cement mixing method
And it is inserted in H profile steel in cement mixing method,
Described construction method also includes：
After the completion of the basement engineering of described architectural engineering, reclaim described prestress anchorage cable and described H profile steel.
10. construction method according to claim 7 is it is characterised in that described construction method also includes：
Between described SMW engineering method stake and the base plate of described architectural engineering, construction forms plain concrete load transfering strip.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015110183319 | 2015-12-29 | ||
| CN201511018331 | 2015-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106400810A true CN106400810A (en) | 2017-02-15 |
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ID=58005407
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610240442.2A Pending CN106400810A (en) | 2015-12-29 | 2016-04-18 | Foundation pit support structure and construction method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775814A (en) * | 2009-02-20 | 2010-07-14 | 上海强劲基础工程有限公司 | Anti-slip cement soil pile soil blocking structure and construction method thereof |
| CN103195085A (en) * | 2013-04-02 | 2013-07-10 | 东南大学 | Downward story-adding basement and construction method thereof |
| CN103603359A (en) * | 2013-11-14 | 2014-02-26 | 明业建设集团有限公司 | Deep foundation pit diagonal bracing support structure demolition method |
| CN104131566A (en) * | 2014-05-27 | 2014-11-05 | 中国建筑第四工程局有限公司 | Method for constructing basement foundation pit without horizontal braces |
| CN205712121U (en) * | 2015-12-29 | 2016-11-23 | 上海建工五建集团有限公司 | Foundation pit supporting construction |
-
2016
- 2016-04-18 CN CN201610240442.2A patent/CN106400810A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775814A (en) * | 2009-02-20 | 2010-07-14 | 上海强劲基础工程有限公司 | Anti-slip cement soil pile soil blocking structure and construction method thereof |
| CN103195085A (en) * | 2013-04-02 | 2013-07-10 | 东南大学 | Downward story-adding basement and construction method thereof |
| CN103603359A (en) * | 2013-11-14 | 2014-02-26 | 明业建设集团有限公司 | Deep foundation pit diagonal bracing support structure demolition method |
| CN104131566A (en) * | 2014-05-27 | 2014-11-05 | 中国建筑第四工程局有限公司 | Method for constructing basement foundation pit without horizontal braces |
| CN205712121U (en) * | 2015-12-29 | 2016-11-23 | 上海建工五建集团有限公司 | Foundation pit supporting construction |
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| CB03 | Change of inventor or designer information |
Inventor after: Li Yan Inventor after: Liu Jian Inventor after: Chen Kunliang Inventor before: Fang Yi Inventor before: Liu Jian Inventor before: Chen Kunliang |
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Application publication date: 20170215 |
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