CN107938701A - Subway station covered back-digging overlapping wall construction technology based on prefabricated ground-connecting-wall - Google Patents
Subway station covered back-digging overlapping wall construction technology based on prefabricated ground-connecting-wall Download PDFInfo
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- CN107938701A CN107938701A CN201711177389.7A CN201711177389A CN107938701A CN 107938701 A CN107938701 A CN 107938701A CN 201711177389 A CN201711177389 A CN 201711177389A CN 107938701 A CN107938701 A CN 107938701A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
-
- 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
-
- 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)
- Environmental & Geological Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
A kind of subway station covered back-digging overlapping wall construction technology based on prefabricated ground-connecting-wall, the metro station construction of prefabricated ground-connecting-wall is used using Precast Concrete Frame and building enclosure for agent structure, it includes prefabricated ground-connecting-wall and the construction of agent structure middle support column, topsoil excavates and station top board construction, subsoil excavate and the construction of middle plate, bottom side wall pour and to form overlapping wall, continue to excavate downwards and build agent structure.The construction of sheltered reverse excavation and overlapping wall is combined by the present invention prefabricated ground-connecting-wall of application, construction for the prefabricated underground station in southern soft clay area provides design rationally and the thinking of easy construction, the support replacement problem of prefabricated underground station construction is avoided, work progress is safe and reliable.
Description
Technical field
The invention belongs to construction of underground structure technical field of construction, more particularly to the subway station lid based on prefabricated ground-connecting-wall
Inverse work overlapping wall construction technology is dug, suitable for the construction of the prefabricated underground station in soft clay area.
Background technology
Contrary sequence method is first to be applied at the same time along building basement axis or surrounding construction diaphram wall or other supporting construction
The intermediate supports stake of work agent structure and column, superstructure dead weight and construction loads are born as construction period before bottom plate back cover
Support, then downward each Rotating fields plate of Construction of Supporting since top plate, each Rotating fields plate doubles as the level for diaphram wall
Support, until bottom plate back cover.Compared with traditional construction method of deep foundation ditch, contrary sequence method have environmental protection, save social resources,
Many advantages, such as shortening the construction period, it overcomes many shortcomings existing for conventional gib, is to carry out sustainable development
The Urban Underground Space Excavation of exhibition and the effective economic means built a conservation-minded society.
Cap excavation method be when underground engineering is bright do when need the barriers such as highway crossing, building and take Novel engineering construction
Method, is after being excavated to certain depth downwards by ground, by top seal, remaining lower part engineering carries out under the head cover of closing
Construction.Sheltered reverse excavation is first to do the enclosed structure of foundation pit and middle pile, the use more of pit maintenance soil structure downwards in earth's surface
Diaphram wall or curtain pile, intermediate supports utilize the middle standing pillar of agent structure in itself to reduce project cost more.Then i.e.
The top layer soil body can be excavated to agent structure top plate ground elevation, top plate is poured as clay model by the use of the soil body not excavated.Top plate can
As strong stull together, to prevent enclosed structure from being deformed into foundation pit, road to be restored after backfill, recovers to hand over
It is logical.Later work is carried out under top plate covering, i.e., successively excavates from top to bottom and build agent structure until bottom plate.Such as
Fruit excavation area is larger, earthing is shallower, around along building too close to prevent from causing because of excavation pit and closing on as far as possible
The depression of building, or road traffic need to be recovered early, but lack sizing covered structure, construct frequently with sheltered reverse excavation.
In Construction of Urban Rail Traffic, subway station is wherein most crucial most basic part, it build must well
The bad image for being directly related to subway, will seriously affect the image of city underground if phenomena such as leak occurs.Solve subway
The key of leakage problem of standing is the selection of station side wall organization plan, it is more at present using composite wall and overlapping wall both
Form.Since subway station is located at the busy city area of narrow space, overlapping wall can with constriction station plane width and more because of it
It is suitable to use.It is a part of the building enclosure as agent structure side wall to overlap wall construction form, by being embedded in building enclosure
In reinforcing bar connector and agent structure link, by structure and working measure, ensure the Shear transfer of superposed surfaces, form one
It is overall.Since the rigidity of structure for overlapping wall is larger, can be enclosed using building enclosure side skin friction and building enclosure weight come anti-floating
The deformation of protection structure and liner is consistent, and in Excavation Process, in each layer edges of boards across load can be transferred directly to building enclosure
On, total stress system is simply clear and definite.However, since overlapping wall construction reserved steel bar connector difficulty of construction is big, foundation pit
After excavation utilization rate it is low and significantly limit overlapping wall construction use.
Prefabrication is just received more and more attention and promoted, and at present, prefabricated assembled concrete structure exists
Architectural design, component production, installation and structure stress model, component connecting structure etc. obtain large development.
In the construction of subway station, agent structure is according to prefabricated construction, in architectural appearance quality, energy-saving effect, comprehensive warp
Ji benefit etc. can accomplish the equivalent or performance better than cast-in-place concrete structure；And foundation pit enclosure structure is according to prefabrication and assembly construction
Formula diaphram wall, then have the advantages that good wall quality, wall surface levelling, built-in fitting accurate positioning.
The content of the invention
The purpose of the present invention is aiming at the complicated construction technique that wall construction is overlapped in existing metro station construction, construction
A kind of the defects of quality is not easy to ensure, leak easily occurs, there is provided subway station covered back-digging overlapping based on prefabricated ground-connecting-wall
Wall construction technology, to solve the difficulty of the overlapping wall complicated construction technique of coercion underground continuous wall and the unification of two wall of structure inwall
Topic.
Technical solution
In order to realize above-mentioned technical purpose, the present invention devises a kind of subway station covered back-digging based on prefabricated ground-connecting-wall
Overlap wall construction technology, it is characterised in that：The building enclosure of the Metro station excavation uses prefabricated ground-connecting-wall, the subway
Excavation of foundation pit of standing uses sheltered reverse excavation, and subway station station agent structure uses Precast Concrete Frame, described
Entirety is formed by cast-in-place structural side wall between main structure of subway station and prefabricated ground-connecting-wall.
The overlapping wall refers to prefabricated ground-connecting-wall towards embedded bar connector on the inside of foundation pit, the station agent structure
Precast beam, board member and ground-connecting-wall connection side embedded bar connector and reserved part bent-up bar, the company prefabricatedly
Realized and connected by reinforcing bar connector between wall and the precast beam of station agent structure, board member, other reinforcing bars of prefabricated ground-connecting-wall
Connector connects side wall shear reinforcement, and structure side wall forms overlapping wall using integral cast-in-situ and prefabricated ground ground-connecting-wall.
The subway station covered back-digging overlaps wall construction technology, comprises the following steps：
(1) prefabricated ground-connecting-wall and the construction of agent structure middle support column：To the prefabricated ground-connecting-wall and the intermediate supports
Column is constructed respectively；
(2) topsoil excavation and station top board construction：During to the station top board construction, reserve lid and dig out native hole, hole
Mouthful size will meet that lower floor is unearthed demand and precast beam, board member lifting space requirement；
The top plate and ground-connecting-wall building enclosure connecting portion cast-in-place wall top beam.
(3) subsoil excavates and middle plate is constructed；
(4) bottom side wall pours to form overlapping wall：It is whole in order to ensure to be formed with prefabricated ground-connecting-wall before the side wall pours
Body, need to carry out dabbing to ground-connecting-wall surface；
(5) continue to excavate downwards and build agent structure, poured until completing construction of bottom plates and bottom side wall.
In the step (2) during the construction of top, reserved unearthed hole is located proximate to ground-connecting-wall side, is conveniently excavated
Earthwork transportation.
In the step (2) during the main structure construction of station, the node connection that precast beam, board member intersect is poured by scene
Build to form entirety.
In the step (4) during the construction of overlapping wall, precast beam, the precast reinforced and reinforcing bar connector interval of board member are set
Put.
The present invention has the following advantages compared with prior art：
(1) processing step is simple, design is reasonable and easy construction, input construction cost are relatively low.
(2) prefabricated ground-connecting-wall design is rationally used by and easy construction, input construction cost are relatively low.
(3) building enclosure ground-connecting-wall and agent structure component are using prefabricated assembled, prefabrication production used by
During reinforcing bar connector position it is accurate so that agent structure component and the quality of connection of prefabricated ground-connecting-wall have in work progress
Ensure.
(4) sheltered reverse excavation is constructed used by, without inner support, is conducive to the lifting of prefabricated construction,
The foundation pit for having inner support needs to carry out support replacement during prefabricated part hanging, tears the processes such as support open, not only complicated but also deposit
In very big security risk.
(5) overlapping wall includes prefabricated ground-connecting-wall and the foundation pit inside subject on the outside of Metro station excavation of constructing used by
Structure side wall, side wall use cast-in-place construction, station agent structure and the connecting node simple structure of prefabricated ground-connecting-wall, construction is simple
And construction quality is easy to ensure.
Brief description of the drawings
Attached drawing 1 is the process flow diagram of the embodiment of the present invention.
Attached drawing 2 is the diagrammatic cross-section of the Metro Station Structure of the embodiment of the present invention.
Attached drawing 3 is the overlapping wall construction construction schematic diagram of the embodiment of the present invention.
Attached drawing 4 is unearthed hole horizontal layout schematic diagram for the foundation pit construction of the embodiment of the present invention.
Attached drawing 5 is the precast reinforced connector in precast beam junction, the reserved steel bar schematic diagram of the embodiment of the present invention.
Embodiment
With reference to the accompanying drawings and examples, the present invention will be further described.
As shown in Figure 1, the subway station covered back-digging overlapping wall construction technology based on prefabricated ground-connecting-wall, including with
Lower step：
The first step, prefabricated ground-connecting-wall and the construction of agent structure middle support column：To the prefabricated ground-connecting-wall and the centre
Support column is constructed respectively；
Second step, topsoil excavates and station top board construction：During to the station top board construction, reserve lid and dig out soil
Hole.Port size will meet that lower floor is unearthed demand and precast beam, board member lifting space requirement；
The top plate and ground-connecting-wall building enclosure connecting portion cast-in-place wall top beam.
3rd step, subsoil excavates and the construction of middle plate；
4th step, bottom side wall pour to form overlapping wall：Before the side wall pours, in order to ensure and prefabricated ground-connecting-wall energy shape
It is integral, dabbing need to be carried out to ground-connecting-wall surface；
5th step, continuation excavate downwards and build agent structure, are poured until completing construction of bottom plates and bottom side wall.
In the subway station covered back-digging overlapping wall construction technology based on prefabricated ground-connecting-wall, the knot of Metro station excavation
As shown in Figure 2, building enclosure uses prefabricated ground-connecting-wall to structure section, and Metro station excavation excavates and uses sheltered reverse excavation, subway
Station station agent structure uses Precast Concrete Frame, by existing between main structure of subway station and prefabricated ground-connecting-wall
Pour structure side wall and form entirety.
The overlapping wall refers to prefabricated ground-connecting-wall towards embedded bar connector on the inside of foundation pit, the station agent structure
Precast beam, board member and ground-connecting-wall connection side embedded bar connector and reserved part bent-up bar, the company prefabricatedly
Realized and connected by reinforcing bar connector between wall and the precast beam of station agent structure, board member, other reinforcing bars of prefabricated ground-connecting-wall
Connector connects side wall shear reinforcement, and structure side wall forms overlapping wall using integral cast-in-situ and prefabricated ground ground-connecting-wall.
The overlapping wall construction system of prefabricated ground-connecting-wall and station agent structure side wall composition in the present embodiment, such as the institute of attached drawing 3
Show.
In the present embodiment, in the second step during construction of top, reserved unearthed hole is located proximate to ground-connecting-wall side, conveniently
The earthwork transportation being excavated, as shown in Figure 4.
In the present embodiment, during the station main structure construction, the node connection that precast beam, board member intersect passes through scene
Pour to form entirety.
In the present embodiment, when the overlapping wall is constructed, precast beam, the precast reinforced and reinforcing bar connector interval of board member are set
Put, as shown in Figure 5.
The above, is only presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, it is every according to the present invention
Any simple modification, change and the equivalent structure change that technical spirit makees above example, still fall within skill of the present invention
In the protection domain of art scheme.
Claims (4)
1. the subway station covered back-digging overlapping wall construction technology based on prefabricated ground-connecting-wall, it is characterised in that：The subway station
The building enclosure of foundation pit uses prefabricated ground-connecting-wall, and the Metro station excavation excavates and uses sheltered reverse excavation, the subway station
Station agent structure uses Precast Concrete Frame, by existing between the main structure of subway station and prefabricated ground-connecting-wall
Pour structure side wall and form entirety；
The overlapping wall refers to prefabricated ground-connecting-wall towards embedded bar connector on the inside of foundation pit, the station agent structure it is pre-
Beam processed, board member and ground-connecting-wall connection side embedded bar connector and reserved part bent-up bar, the prefabricated ground-connecting-wall and
Pass through reinforcing bar connector between the precast beam of station agent structure, board member and realize connection, described other reinforcing bars of prefabricated ground-connecting-wall
Connector connects side wall shear reinforcement, and structure side wall forms overlapping wall using integral cast-in-situ and prefabricated ground-connecting-wall；
The subway station covered back-digging overlaps wall construction technology, comprises the following steps：
(1) prefabricated ground-connecting-wall and the construction of agent structure middle support column：To the prefabricated ground-connecting-wall and the middle support column point
Do not construct；
(2) topsoil excavation and station top board construction：During to the station top board construction, reserve lid and dig out native hole, aperture ruler
It is very little to meet that lower floor is unearthed demand and precast beam, board member lifting space requirement；
The top plate and ground-connecting-wall building enclosure connecting portion cast-in-place wall top beam；
(3) subsoil excavates and middle plate is constructed；
(4) bottom side wall pours to form overlapping wall：Before the side wall pours, in order to ensure that with prefabricated ground-connecting-wall entirety can be formed,
Dabbing need to be carried out to ground-connecting-wall surface；
(5) continue to excavate downwards and build agent structure, poured until completing construction of bottom plates and bottom side wall.
2. the subway station covered back-digging overlapping wall construction technology described in accordance with the claim 1 based on prefabricated ground-connecting-wall, it is special
Sign is：In the step (2) during the construction of top, reserved unearthed hole is located proximate to ground-connecting-wall side, is conveniently excavated
Earthwork transportation.
3. the subway station covered back-digging overlapping wall construction technology described in accordance with the claim 1 based on prefabricated ground-connecting-wall, it is special
Sign is：In the step (5) during the main structure construction of station, the node connection that precast beam, board member intersect is poured by scene
Build to form entirety.
4. the subway station covered back-digging overlapping wall construction technology described in accordance with the claim 1 based on prefabricated ground-connecting-wall, it is special
Sign is：In the step (4) during the construction of overlapping wall, precast beam, the precast reinforced and reinforcing bar connector of board member are arranged at intervals.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711177389.7A CN107938701A (en) | 2017-11-23 | 2017-11-23 | Subway station covered back-digging overlapping wall construction technology based on prefabricated ground-connecting-wall |
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| CN201711177389.7A CN107938701A (en) | 2017-11-23 | 2017-11-23 | Subway station covered back-digging overlapping wall construction technology based on prefabricated ground-connecting-wall |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108589801A (en) * | 2018-05-25 | 2018-09-28 | 广州市建筑科学研究院有限公司 | A kind of subway station combination anti-floating system and method |
| CN109487798A (en) * | 2018-12-29 | 2019-03-19 | 中交（广州）建设有限公司 | Station asymmetry excavation supporting structure and construction technology |
| CN109555130A (en) * | 2018-12-29 | 2019-04-02 | 长江勘测规划设计研究有限责任公司 | Plate doubles as temporary support structure and construction method in subway main body structure |
| CN110700315A (en) * | 2019-10-23 | 2020-01-17 | 中铁东方国际集团有限公司 | Integrated station structure and construction method of middle cover excavation method |
| CN113293766A (en) * | 2021-03-30 | 2021-08-24 | 内蒙古科技大学 | Comprehensive earthwork excavation method for large-scale cover excavation top-down T-shaped transfer subway station |
| CN113338333A (en) * | 2021-06-09 | 2021-09-03 | 中铁四局集团第五工程有限公司 | Quick mounting method for steel beam plate under cover-excavation top-down condition |
| CN113833024A (en) * | 2021-10-21 | 2021-12-24 | 中国十九冶集团有限公司 | Basin-type excavation combined cover-excavation top-down construction method for water-rich deep and large foundation pit |
| CN116043916A (en) * | 2023-03-02 | 2023-05-02 | 中铁二院工程集团有限责任公司 | Cover excavation reverse construction method for assembled underground structure and assembled underground structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104060629A (en) * | 2014-07-02 | 2014-09-24 | 中铁十二局集团第七工程有限公司 | Covered top-down excavation subway station overlapped wall construction method and movable side wall formwork jumbo |
| CN105178357A (en) * | 2015-07-16 | 2015-12-23 | 中国建筑股份有限公司 | Prefabricated subsurface structure under foundation trench open cutting condition and construction method for prefabricated subsurface structure under foundation trench open cutting condition |
| CN105926669A (en) * | 2016-04-29 | 2016-09-07 | 广州地铁设计研究院有限公司 | Construction method of subway station |
| CN205742265U (en) * | 2016-06-03 | 2016-11-30 | 长沙远大住宅工业集团股份有限公司 | Complete prefabricated overlapping assembled underground pipe gallery and connection node thereof |
-
2017
- 2017-11-23 CN CN201711177389.7A patent/CN107938701A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104060629A (en) * | 2014-07-02 | 2014-09-24 | 中铁十二局集团第七工程有限公司 | Covered top-down excavation subway station overlapped wall construction method and movable side wall formwork jumbo |
| CN105178357A (en) * | 2015-07-16 | 2015-12-23 | 中国建筑股份有限公司 | Prefabricated subsurface structure under foundation trench open cutting condition and construction method for prefabricated subsurface structure under foundation trench open cutting condition |
| CN105926669A (en) * | 2016-04-29 | 2016-09-07 | 广州地铁设计研究院有限公司 | Construction method of subway station |
| CN205742265U (en) * | 2016-06-03 | 2016-11-30 | 长沙远大住宅工业集团股份有限公司 | Complete prefabricated overlapping assembled underground pipe gallery and connection node thereof |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108589801A (en) * | 2018-05-25 | 2018-09-28 | 广州市建筑科学研究院有限公司 | A kind of subway station combination anti-floating system and method |
| CN109487798A (en) * | 2018-12-29 | 2019-03-19 | 中交（广州）建设有限公司 | Station asymmetry excavation supporting structure and construction technology |
| CN109555130A (en) * | 2018-12-29 | 2019-04-02 | 长江勘测规划设计研究有限责任公司 | Plate doubles as temporary support structure and construction method in subway main body structure |
| CN109555130B (en) * | 2018-12-29 | 2024-01-05 | 长江勘测规划设计研究有限责任公司 | Middle plate of subway main body structure and temporary supporting structure and construction method |
| CN109487798B (en) * | 2018-12-29 | 2024-03-22 | 中交（广州）建设有限公司 | Asymmetric excavation construction process for station |
| CN110700315A (en) * | 2019-10-23 | 2020-01-17 | 中铁东方国际集团有限公司 | Integrated station structure and construction method of middle cover excavation method |
| CN113293766A (en) * | 2021-03-30 | 2021-08-24 | 内蒙古科技大学 | Comprehensive earthwork excavation method for large-scale cover excavation top-down T-shaped transfer subway station |
| CN113293766B (en) * | 2021-03-30 | 2022-12-30 | 内蒙古科技大学 | Comprehensive earth excavation method for large-scale cover-excavation top-down T-shaped transfer subway station |
| CN113338333A (en) * | 2021-06-09 | 2021-09-03 | 中铁四局集团第五工程有限公司 | Quick mounting method for steel beam plate under cover-excavation top-down condition |
| CN113833024A (en) * | 2021-10-21 | 2021-12-24 | 中国十九冶集团有限公司 | Basin-type excavation combined cover-excavation top-down construction method for water-rich deep and large foundation pit |
| CN116043916A (en) * | 2023-03-02 | 2023-05-02 | 中铁二院工程集团有限责任公司 | Cover excavation reverse construction method for assembled underground structure and assembled underground structure |
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Application publication date: 20180420 |