CN113530571B - Inner support supporting system for excavating underground tunnel to station end of underground station and construction method - Google Patents
Inner support supporting system for excavating underground tunnel to station end of underground station and construction method Download PDFInfo
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- CN113530571B CN113530571B CN202110820209.2A CN202110820209A CN113530571B CN 113530571 B CN113530571 B CN 113530571B CN 202110820209 A CN202110820209 A CN 202110820209A CN 113530571 B CN113530571 B CN 113530571B
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- tunnel
- steel
- foundation pit
- support
- purlin
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- 238000010276 construction Methods 0.000 title abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 108
- 239000010959 steel Substances 0.000 claims abstract description 108
- 239000011378 shotcrete Substances 0.000 claims abstract description 8
- 238000009412 basement excavation Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 238000005056 compaction Methods 0.000 claims description 3
- 239000004567 concrete Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to an inner support supporting system for excavating a subsurface tunnel to a station end of an underground station and a construction method, wherein the system comprises a foundation pit part and a tunnel part; the foundation pit part comprises a foundation pit support structure, and is provided with guard piles uniformly arranged on two sides and the end part of the foundation pit, wherein the inner sides of the guard piles are provided with horizontal steel purlins in the foundation pit, and inclined foundation pit steel supports are respectively arranged between the steel purlins in the foundation pit on two sides and the steel purlins in the end part of the foundation pit; the tunnel part comprises a primary support shotcrete and a tunnel secondary lining, wherein the end part of the tunnel secondary lining is provided with a horizontal steel surrounding purlin in the tunnel, the steel surrounding purlin in the tunnel is positioned outside a surrounding pile at the end part of the foundation pit, and an inclined tunnel steel support is arranged between the steel surrounding purlin in the tunnel and the tunnel secondary lining. The invention fully utilizes the construction flexibility of the steel purlin and the steel support and the reliability of the lining structure, not only has convenient construction and saves investment, but also greatly improves the construction efficiency and reduces the risk of construction period lag.
Description
Technical Field
The invention belongs to the technical field of underground engineering construction, and particularly relates to an inner support supporting system for excavating a subsurface tunnel to a station end of an underground station and a construction method.
Background
When urban subway construction is carried out, construction at the boundary between a station and an interval tunnel is a key problem of collecting technology and construction period, because the station is generally arranged in a traffic main channel, the environment is complex, and tunnel communication conditions cannot be provided for the tunnel in time, and the connected shallow-buried underground tunnel is conventionally excavated to the end of the station for a certain distance before construction is stopped, and when the station is constructed, the tunnel is constructed, so that the tunnel cannot be communicated in time. Therefore, higher requirements are put forward for tunnel construction procedures and construction periods at the ends of the stations. Because the procedures of the underground excavation tunnel are complex, construction stagnation and secondary starting construction can cause more conversion of the underground excavation procedures, and the construction investment and the construction progress are greatly influenced.
Disclosure of Invention
The invention aims to provide an inner support supporting system for excavating a subsurface tunnel to a station end of an underground station and a construction method, which change the construction procedure of a conventional station interval and overcome the defects of the prior construction technology.
The technical scheme adopted by the invention is as follows:
Interior support supporting system of secretly excavated tunnel excavation to underground station end, its characterized in that:
the system comprises a foundation pit part and a tunnel part;
The foundation pit part comprises a foundation pit support structure, and is provided with guard piles uniformly arranged on two sides and the end part of the foundation pit, wherein the inner sides of the guard piles are provided with horizontal steel purlins in the foundation pit, and inclined foundation pit steel supports are respectively arranged between the steel purlins in the foundation pit on two sides and the steel purlins in the end part of the foundation pit;
The tunnel part comprises a primary support shotcrete and a tunnel secondary lining, wherein the end part of the tunnel secondary lining is provided with a horizontal steel surrounding purlin in the tunnel, the steel surrounding purlin in the tunnel is positioned outside a surrounding pile at the end part of the foundation pit, and an inclined tunnel steel support is arranged between the steel surrounding purlin in the tunnel and the tunnel secondary lining.
The steel purlin and the steel purlin are located the both sides of foundation ditch tip fender post in the tunnel to set up at same height.
The end part of the primary support sprayed concrete is propped into the foundation pit support structure, and the end part of the secondary lining of the tunnel is propped into the deformation joint outside the foundation pit support structure.
The end part of the steel purlin in the tunnel goes deep into the gap between the secondary lining of the tunnel and the foundation pit support structure, and the concrete is sprayed from the top to the primary support.
The steel enclosing purlin is arranged on an angle steel bracket which is anchored into the enclosing pile through an anchor bolt.
The end part of the foundation pit steel support is welded and fixed to the inner steel purlin of the foundation pit through a long flange connecting plate outside the inner steel purlin of the foundation pit.
The steel purlin is arranged on the angle steel bracket which is anchored into the fender pile through the anchor bolt in the tunnel.
The end part of the tunnel steel support is welded and fixed to the inner steel purlin of the tunnel through a long flange connecting plate outside the inner steel purlin of the tunnel.
And an embedded connecting piece is arranged in the secondary lining of the tunnel, and the end part of the tunnel steel support is fixed on the embedded connecting piece.
The construction method of the inner support supporting system from the excavation of the underground tunnel to the station end of the underground station is characterized by comprising the following steps of:
The method comprises the following steps:
Step one: constructing a primary support structure of the excavated tunnel excavation support to the station enclosure structure, and reinforcing grouting of the primary support back, so as to ensure compaction of the primary support back;
step two: constructing a second lining of the underground excavation tunnel to the deformation joint, embedding a steel plate at a designated position of the second lining structure, and ensuring firm connection between the second lining and the steel support in the later period;
Step three: when the strength of the second lining meets the requirement, the steel purlin and the steel support are erected, the steel purlin needs to go deep into the gap between the second lining and the foundation pit support structure and be propped against the primary supporting structure of the tunnel, wherein if the deformation joint is far away from the support pile, the gap is filled, and then the steel support is erected.
The invention has the following advantages:
On the basis of a station foundation pit support structure and a hidden tunnel lining, the steel purlin and the inner support system of the steel support are arranged in the tunnel, and the number of the inner supports can be adjusted according to the size of the section of the hidden tunnel and the strength of the pressure; meanwhile, according to the characteristics of the supporting type, the connection node between the enclosing purlin and the secondary lining is optimized so as to realize good combination of the rigid support and the secondary lining structure, and the conventional supporting mode is adopted, so that the construction operation is convenient, and the engineering investment is saved; the steel support system capable of applying prestress is arranged, so that the deformation of the side wall of the enclosure structure and the subsidence of the earth surface can be effectively controlled, and the engineering risk is reduced.
After the product is molded, conventional treatment measures of boundary of the station interval are changed, and the influence of working procedures and construction periods caused by constructing the tunnel after constructing the station main body is solved. The method has wide application value in the field of urban subway tunnel construction.
Drawings
FIG. 1 is a schematic plan view of the present invention.
Fig. 2 is a schematic cross-sectional elevation view of the present invention.
In the figure, the concrete is sprayed to 1-tunnel secondary lining, 2-primary support, 3-tunnel inner steel enclosing purlin, 4-tunnel steel support, 5-foundation pit enclosure, 6-foundation pit inner steel enclosing purlin, 7-foundation pit steel support and 8-deformation joint.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The invention relates to an inner support supporting system for excavating a subsurface tunnel to a station end of an underground station, which comprises a foundation pit part and a tunnel part; the foundation pit part comprises a foundation pit support structure 5, wherein retaining piles are uniformly arranged on two sides and the end part of the foundation pit, the inner sides of the retaining piles are provided with horizontal steel purlins 6 in the foundation pit, and inclined foundation pit steel supports 7 are respectively arranged between the steel purlins 6 in the foundation pit on two sides and the steel purlins 6 in the end part of the foundation pit; the tunnel part includes preliminary bracing shotcrete 2 and tunnel secondary lining 1, and tunnel secondary lining 1 tip is provided with horizontal tunnel inner steel purlin 3, and tunnel inner steel purlin 3 is located the fender pile outside of foundation ditch tip, is provided with slant tunnel steel support 4 between tunnel inner steel purlin 3 and the tunnel secondary lining 1.
The steel purlin 3 in the tunnel and the steel purlin 6 in the foundation ditch are located the both sides of foundation ditch tip fender post to set up at same height.
The end part of the primary support shotcrete 2 is propped into the foundation pit support structure 5, and the end part of the secondary lining of the tunnel is propped to the deformation joint 8 outside the foundation pit support structure 5. The end part of the steel purlin 3 in the tunnel goes deep into the gap between the secondary lining 1 of the tunnel and the foundation pit support structure 5, and is propped up to the primary support shotcrete 2.
The steel enclosing purlin 6 is arranged on an angle steel bracket (the bracket is anchored into an enclosing pile through an anchor bolt), and the end part of the foundation pit steel support 7 is welded and fixed on the steel enclosing purlin 6 in the foundation pit through a long flange connecting plate outside the steel enclosing purlin. The steel enclosing purlin 3 in the tunnel is arranged on an angle steel bracket (the bracket is anchored into the enclosing pile through an anchor bolt), and the end part of the tunnel steel support 4 is welded and fixed on the steel enclosing purlin 3 in the tunnel through a long flange connecting plate outside the steel enclosing purlin. An embedded connecting piece is arranged in the tunnel secondary lining 1, and the end part of the tunnel steel support 4 is fixed on the embedded connecting piece.
The construction method of the inner support supporting system from the excavation tunnel to the station end of the underground station comprises the following steps:
Step one: constructing a primary support structure of the excavated tunnel excavation support to the station enclosure structure, and reinforcing grouting of the primary support back, so as to ensure compaction of the primary support back;
step two: constructing a second lining of the underground excavation tunnel to the deformation joint, embedding a steel plate at a designated position of the second lining structure, and ensuring firm connection between the second lining and the steel support in the later period;
Step three: when the strength of the second lining meets the requirement, the steel purlin and the steel support are erected, the steel purlin needs to go deep into the gap between the second lining and the foundation pit support structure and be propped against the primary supporting structure of the tunnel, wherein if the deformation joint is far away from the support pile, the gap is filled, and then the steel support is erected.
The steel support is generally a phi 609 steel pipe internal support system commonly used in foundation pit supporting engineering, so that materials can be conveniently obtained and recycled. In the tunnel construction process, through the back slip casting of primary support, tunnel two lining, steel enclose purlin and steel support effective connection's the mutual combination, the temporary support structure of formation can satisfy the requirement of relevant function such as deformation during the station foundation ditch construction.
According to the invention, the construction procedure of processing the end head of the station conventionally is changed by arranging the steel enclosing purlin and the inner support system of the steel support in the tunnel, the arrangement quantity and the support force of the inner support can be adjusted according to the size of the section of the underground tunnel and the strength of the pressure of the enclosing structure, and meanwhile, the connection node between the enclosing purlin and the secondary lining is optimized according to the characteristics of the support type, so that the good combination of the rigid support and the secondary lining structure is realized; compared with the conventional measures, the construction operation is convenient, and the engineering investment is saved; the steel support system capable of applying prestress is arranged, so that the deformation of the side wall of the enclosure structure can be effectively controlled, and tunnel tunneling can be realized under the condition that the station end is not constructed, thereby reducing engineering risks.
The content of the invention is not limited to the examples listed, and any equivalent transformation to the technical solution of the invention that a person skilled in the art can take on by reading the description of the invention is covered by the claims of the invention.
Claims (8)
1. Interior support supporting system of secretly excavated tunnel excavation to underground station end, its characterized in that:
the system comprises a foundation pit part and a tunnel part;
The foundation pit part comprises a foundation pit support structure (5), wherein guard piles are uniformly arranged on two sides and the end part of the foundation pit, a horizontal steel purlin (6) in the foundation pit is arranged on the inner side of the guard piles, and inclined foundation pit steel supports (7) are respectively arranged between the steel purlins (6) in the foundation pit on two sides and the steel purlin (6) in the end part of the foundation pit;
The tunnel part comprises a primary support shotcrete (2) and a tunnel secondary lining (1), a horizontal tunnel inner steel enclosing purlin (3) is arranged at the end part of the tunnel secondary lining (1), the tunnel inner steel enclosing purlin (3) is positioned at the outer side of a enclosing pile at the end part of a foundation pit, and an inclined tunnel steel support (4) is arranged between the tunnel inner steel enclosing purlin (3) and the tunnel secondary lining (1);
The end part of the primary support shotcrete (2) is propped into the foundation pit support structure (5), and the end part of the secondary lining of the tunnel is propped to a deformation joint (8) outside the foundation pit support structure (5);
An embedded connecting piece is arranged in the tunnel secondary lining (1), and the end part of the tunnel steel support (4) is fixed on the embedded connecting piece.
2. The interior support system for excavated tunnels excavated to a terminal of an underground station according to claim 1, wherein:
The steel purlin (3) and the steel purlin (6) in the foundation pit are arranged on two sides of the guard pile at the end part of the foundation pit and are arranged at the same height.
3. The interior support system for excavated tunnels excavated to a terminal of an underground station according to claim 2, wherein:
The end part of the steel purlin (3) in the tunnel goes deep into the gap between the secondary lining (1) of the tunnel and the foundation pit support structure (5) and is propped against the primary support to spray concrete (2).
4. The interior support system for excavating a undercut tunnel to a terminal end of a subterranean station of claim 3 wherein:
The steel purlin (6) is arranged on the angle steel bracket which is anchored into the fender pile through the anchor bolt in the foundation pit.
5. The interior support system for excavating a undercut tunnel to a terminal of a subterranean station of claim 4 wherein:
The end part of the foundation pit steel support (7) is welded and fixed on the foundation pit inner steel purlin (6) through a long flange connecting plate outside the foundation pit inner steel purlin (6).
6. The interior support system for excavating a undercut tunnel to a terminal of a subterranean station of claim 5 wherein:
the steel purlin (3) is arranged on the angle steel bracket which is anchored into the fender pile through the anchor bolt.
7. The interior support system for excavating a undercut tunnel to a terminal end of a subterranean station of claim 6 wherein:
the end part of the tunnel steel support (4) is welded and fixed on the steel purlin (3) in the tunnel by a long flange connecting plate outside the steel purlin (3) in the tunnel.
8. The method for constructing the inner support system from the excavation of the underground tunnel to the station end of the underground station according to claim 7, which is characterized by comprising the following steps:
The method comprises the following steps:
Step one: constructing a primary support structure of the excavated tunnel excavation support to the station enclosure structure, and reinforcing grouting of the primary support back, so as to ensure compaction of the primary support back;
step two: constructing a second lining of the underground excavation tunnel to the deformation joint, embedding a steel plate at a designated position of the second lining structure, and ensuring firm connection between the second lining and the steel support in the later period;
Step three: when the strength of the second lining meets the requirement, the steel purlin and the steel support are erected, the steel purlin needs to go deep into the gap between the second lining and the foundation pit support structure and be propped against the primary supporting structure of the tunnel, wherein if the deformation joint is far away from the support pile, the gap is filled, and then the steel support is erected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110820209.2A CN113530571B (en) | 2021-07-20 | 2021-07-20 | Inner support supporting system for excavating underground tunnel to station end of underground station and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110820209.2A CN113530571B (en) | 2021-07-20 | 2021-07-20 | Inner support supporting system for excavating underground tunnel to station end of underground station and construction method |
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| Publication Number | Publication Date |
|---|---|
| CN113530571A CN113530571A (en) | 2021-10-22 |
| CN113530571B true CN113530571B (en) | 2024-04-30 |
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| CN202110820209.2A Active CN113530571B (en) | 2021-07-20 | 2021-07-20 | Inner support supporting system for excavating underground tunnel to station end of underground station and construction method |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775987A (en) * | 2010-02-02 | 2010-07-14 | 北京交通大学 | Zero spacing construction method for overlapping part of upper main tunnel and lower main tunnel of underground overpass |
| CN203879506U (en) * | 2014-06-03 | 2014-10-15 | 中铁第一勘察设计院集团有限公司 | Supporting structure system for large-section deep vertical shaft in rock stratum |
| CN204551487U (en) * | 2015-03-30 | 2015-08-12 | 中国建筑第六工程局有限公司 | A kind of steel support structure that can realize Adjacent Pit synchronous construction |
| CN105041349A (en) * | 2015-07-26 | 2015-11-11 | 北京工业大学 | Underground excavation construction method for expanded excavation of station on basis of metro regional shield tunnel |
| CN105839643A (en) * | 2016-05-23 | 2016-08-10 | 浙江省交通规划设计研究院 | Tunnel in-hole construction method adopting foundation pit support |
| CN211006756U (en) * | 2019-05-27 | 2020-07-14 | 广东省重工建筑设计院有限公司 | Interface structure of open cut station and large-span duplex arch buried tunnel |
| CN111677515A (en) * | 2020-05-20 | 2020-09-18 | 中铁二院工程集团有限责任公司 | Construction method for breaking open cut foundation pit wall into hole from pile support supporting system by adopting shallow-buried underground excavation method |
| RU2745310C1 (en) * | 2020-08-31 | 2021-03-23 | Открытое акционерное общество "Научно-исследовательский, проектно-изыскательский институт "Ленметрогипротранс" | Method for creating upper cross-cut abutting joint of approach tunnel to existing metropolitan pilot station constructed without interruption of station operation |
| CN112854238A (en) * | 2021-01-11 | 2021-05-28 | 上海市政工程设计研究总院（集团）有限公司 | Open trench tunnel staged construction joint foundation pit supporting system and construction method thereof |
-
2021
- 2021-07-20 CN CN202110820209.2A patent/CN113530571B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775987A (en) * | 2010-02-02 | 2010-07-14 | 北京交通大学 | Zero spacing construction method for overlapping part of upper main tunnel and lower main tunnel of underground overpass |
| CN203879506U (en) * | 2014-06-03 | 2014-10-15 | 中铁第一勘察设计院集团有限公司 | Supporting structure system for large-section deep vertical shaft in rock stratum |
| CN204551487U (en) * | 2015-03-30 | 2015-08-12 | 中国建筑第六工程局有限公司 | A kind of steel support structure that can realize Adjacent Pit synchronous construction |
| CN105041349A (en) * | 2015-07-26 | 2015-11-11 | 北京工业大学 | Underground excavation construction method for expanded excavation of station on basis of metro regional shield tunnel |
| CN105839643A (en) * | 2016-05-23 | 2016-08-10 | 浙江省交通规划设计研究院 | Tunnel in-hole construction method adopting foundation pit support |
| CN211006756U (en) * | 2019-05-27 | 2020-07-14 | 广东省重工建筑设计院有限公司 | Interface structure of open cut station and large-span duplex arch buried tunnel |
| CN111677515A (en) * | 2020-05-20 | 2020-09-18 | 中铁二院工程集团有限责任公司 | Construction method for breaking open cut foundation pit wall into hole from pile support supporting system by adopting shallow-buried underground excavation method |
| RU2745310C1 (en) * | 2020-08-31 | 2021-03-23 | Открытое акционерное общество "Научно-исследовательский, проектно-изыскательский институт "Ленметрогипротранс" | Method for creating upper cross-cut abutting joint of approach tunnel to existing metropolitan pilot station constructed without interruption of station operation |
| CN112854238A (en) * | 2021-01-11 | 2021-05-28 | 上海市政工程设计研究总院（集团）有限公司 | Open trench tunnel staged construction joint foundation pit supporting system and construction method thereof |
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| CN113530571A (en) | 2021-10-22 |
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