CN108843342A - Realize the assembled preliminary bracing structure of tunnel quick closure - Google Patents
Realize the assembled preliminary bracing structure of tunnel quick closure Download PDFInfo
- Publication number
- CN108843342A CN108843342A CN201810925767.3A CN201810925767A CN108843342A CN 108843342 A CN108843342 A CN 108843342A CN 201810925767 A CN201810925767 A CN 201810925767A CN 108843342 A CN108843342 A CN 108843342A
- Authority
- CN
- China
- Prior art keywords
- preliminary bracing
- assembled
- inverted arch
- jurisdiction
- batch production
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/08—Lining with building materials with preformed concrete slabs
- E21D11/083—Methods or devices for joining adjacent concrete segments
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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 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
Abstract
The present invention relates to the assembled preliminary bracing structure for realizing tunnel quick closure, the gunite concrete arch wall preliminary bracing of the preliminary bracing of assembled inverted arch and upper part including bottom, the two circumferential direction forms close ring；The preliminary bracing of assembled inverted arch is made of the splicing of multi-disc batch production prefabricated unit section of jurisdiction, and gunite concrete arch wall preliminary bracing scene is performed using wet spraying process.The present invention is in drill+blast tunnel construction, anchor steel frame supporting construction is sprayed instead of traditional inverted arch using assembled inverted arch preliminary bracing structure, assembled inverted arch preliminary bracing structure each unit section of jurisdiction is the prefabricated grid steel frame concrete structure of batch production, it is assembled using mechanical-assisted in tunnel, reliable in quality is easy to guarantee, consolidation service is high-efficient, it can be achieved that with gunite concrete arch wall preliminary bracing quick closure.
Description
Technical field
The present invention relates to traffic tunnel field of engineering technology, and in particular at the beginning of a kind of assembled for realizing tunnel quick closure
Phase supporting construction.
Background technique
The composite lining of tunnel structure of drill bursting construction mainly includes：Pneumatically placed concrete（Steelframe）Preliminary bracing, mould build two
Secondary lining cutting, general Support System in Soft Rock Tunnels inverted arch bottom are also provided with pneumatically placed concrete（Steelframe）Preliminary bracing structure, construction often use
Benching tunnelling method or other partial excavation methods are completed by several times, are limited to constructing tunnel step sequence, and inverted arch often finally excavates, and at the beginning of inverted arch
Phase supporting is also to apply before pouring mould and building secondary lining inverted arch, and detent position farther out, cannot achieve apart from tunnel tunnel face
Tunnel closes cyclization in time.With the raising of tunneling technology and mechanical equipment manufacture level, more and more
Tunnel Engineering uses mechanized construction.Mechanized construction generally uses tunneling boring or micro- benching tunnelling method once to excavate containing inverted arch, can
It effectively improves operating efficiency, reduce multiple explosion to the disturbance of country rock and supporting construction, reduction labor intensity, improvement construction personnel
Operating environment etc., but for Support System in Soft Rock Tunnels, the timely closing cyclization of preliminary bracing extremely closes stable structure and construction safety
It is important, and traditional pneumatically placed concrete（Steelframe）When supporting construction its maximum efficiency from applying to giving full play to generally requires certain
Between, supporting construction overall stiffness is weaker before gunite concrete gives full play to efficiency, and the repetition of big machinery, which rolls, to be easily caused
Preliminary bracing structure is destroyed.Therefore, development of new can quick closure, quality controllable assembled inverted arch preliminary bracing structure
The problem of being soft rock tunnel construction urgent need to resolve, assembled inverted arch preliminary bracing structure is prefabricated using batch production, and quality is easy to protect
Card is, it can be achieved that quick assembling, preliminary bracing quick closure, it is ensured that stable structure and construction safety.
Summary of the invention
The object of the present invention is to provide a kind of assembled preliminary bracing structures for realizing tunnel quick closure, it is ensured that at the beginning of tunnel
Phase supporting construction quick closure cyclization, reduces the risk of tunnel construction.
The technical scheme adopted by the invention is as follows：
Realize the assembled preliminary bracing structure of tunnel quick closure, it is characterised in that：
The gunite concrete arch wall preliminary bracing of the preliminary bracing of assembled inverted arch and upper part including bottom, the two circumferential direction composition
Close ring；
The preliminary bracing of assembled inverted arch is made of the splicing of multi-disc batch production prefabricated unit section of jurisdiction, gunite concrete arch wall preliminary bracing
Scene is performed using wet spraying process.
Circumferential grid steel frame, gunite concrete arch wall preliminary bracing inside are provided on the inside of the preliminary bracing of assembled inverted arch
It is provided with circumferential steelframe, steelframe both ends bottom is fixedly connected to form with assembled inverted arch preliminary bracing end by connecting fashioned iron
Circumferential close ring.
The preliminary bracing of assembled inverted arch is spelled by being longitudinally divided into polycyclic, the lateral batch production prefabricated unit section of jurisdiction for being divided into multi-segmental
Composition is connect, fissure of displacement splicing between longitudinal each ring.
The injected hole of perforation is provided on batch production prefabricated unit section of jurisdiction perpendicular to country rock.
One end of connection fashioned iron is welded on the grid steel frame end in assembled inverted arch preliminary bracing, realizes batch production weldering
It connects；The other end for connecting fashioned iron is connected at scene in tunnel using the bottom end of bolt and steelframe.
Grid steel frame sub-unit is prefabricated together with batch production prefabricated unit section of jurisdiction, forms whole cellular construction, is unit
The grid steel frame concrete structure of form.
Batch production prefabricated unit section of jurisdiction includes calibrated bolck in the same size and link block not of uniform size.
Screw hole is provided on the end face of batch production prefabricated unit section of jurisdiction, adjacent batch production prefabricated unit passes through screw hole between section of jurisdiction
In bolt realize splicing.
The present invention has the following advantages that：
The present invention is for spraying anchor instead of traditional inverted arch using assembled inverted arch preliminary bracing structure in drill+blast tunnel construction
Steelframe supporting construction, assembled inverted arch preliminary bracing structure each unit section of jurisdiction are the prefabricated grid steel frame concrete knot of batch production
Structure, assembled using mechanical-assisted in tunnel, reliable in quality is easy to guarantee, consolidation service is high-efficient, it can be achieved that with injection coagulation
Native arch wall preliminary bracing quick closure.
Detailed description of the invention
Fig. 1 is structure of the invention cross-sectional view；
Fig. 2 is preliminary bracing structure structural map of the present invention；
Fig. 3 is preliminary bracing structure piecemeal schematic diagram of the present invention；
Fig. 4 is assembled inverted arch preliminary bracing structure assembly expanded schematic diagram of the present invention.
In figure, 1-assembled inverted arch preliminary bracing, 2-gunite concrete arch wall preliminary bracings, 3-grid steel frames, 4-
Steelframe, 5-connection fashioned iron, 6-injected holes, 10-country rocks, 11-preliminary bracing structures, 12-waterproof and water drainage systems, 13-moulds are built
Secondary lining.
Specific embodiment
The present invention will be described in detail With reference to embodiment.
The present invention relates to a kind of assembled preliminary bracing structure for realizing tunnel quick closure, the assembled including bottom is faced upward
Encircle the gunite concrete arch wall preliminary bracing 2 of preliminary bracing 1 and upper part, the two circumferential direction forms close ring.At the beginning of assembled inverted arch
Phase supporting 1 and gunite concrete arch wall preliminary bracing 2 are completed using two kinds of construction technologies, and the preliminary bracing 1 of assembled inverted arch is by more
Piece batch production prefabricated unit section of jurisdiction splicing composition, 2 scene of gunite concrete arch wall preliminary bracing are performed using wet spraying process.
Circumferential grid steel frame 3, gunite concrete arch wall preliminary bracing 2 are provided on the inside of assembled inverted arch preliminary bracing 1
It is fixed by connection fashioned iron 5 that inside is provided with circumferential steelframe 4,4 both ends bottom of steelframe and 1 end of assembled inverted arch preliminary bracing
Connection forms circumferential close ring.One end of connection fashioned iron 5 is welded on 3 end of grid steel frame in assembled inverted arch preliminary bracing 1
Portion realizes batch production welding；The other end for connecting fashioned iron 5 is connect using bolt with the bottom end of steelframe 4 at scene in tunnel.
Assembled inverted arch preliminary bracing 1 is by being longitudinally divided into polycyclic, the lateral batch production prefabricated unit section of jurisdiction for being divided into multi-segmental
Splicing forms, fissure of displacement splicing between longitudinal each ring.3 sub-unit of grid steel frame prefabricated, shape together with batch production prefabricated unit section of jurisdiction
Integral cellular construction is the grid steel frame concrete structure of unit form.
The injected hole 6 of perforation is provided on batch production prefabricated unit section of jurisdiction perpendicular to country rock 10.Injected hole 6 also serves as later period fortune
Defeated assembly hole for hoist.Gap is filled closely knit by 6 slip casting of injected hole between assembled inverted arch preliminary bracing 1 and country rock 10.
Batch production prefabricated unit section of jurisdiction includes calibrated bolck B in the same size and link block A and C not of uniform size.Wherein connect
Block size etc., to realize the preliminary bracing of assembled inverted arch along tunnel axial direction staggered joint erection.
At the preferred inside tension in the piecemeal position of assembled inverted arch preliminary bracing 1, outside compression, each blocking unit section of jurisdiction ring
To being connected by screw bolts.Screw hole is provided on the end face of batch production prefabricated unit section of jurisdiction, between adjacent batch production prefabricated unit section of jurisdiction
Splicing is realized by the bolt in screw hole.
11 inner surface of Tunnel structure is laid with waterproof and water drainage system 12, sets mould on the inside of waterproof and water drainage system 12 and builds secondary lining
Build 13.
When construction, the side of the link block A and C of assembled inverted arch preliminary bracing 1 set connection fashioned iron 5, connection fashioned iron 5 and spray
The steelframe 4 penetrated in concrete arch wall preliminary bracing 2 is bolted integral, it can be achieved that inverted arch preliminary bracing and arch wall initial stage
Supporting quick closure cyclization.
The contents of the present invention are not limited to cited by embodiment, and those of ordinary skill in the art are by reading description of the invention
And to any equivalent transformation that technical solution of the present invention is taken, all are covered by the claims of the invention.
Claims (8)
1. realizing the assembled preliminary bracing structure of tunnel quick closure, it is characterised in that：
Assembled inverted arch preliminary bracing including bottom（1）With the gunite concrete arch wall preliminary bracing of upper part（2）, the two ring
To composition close ring；
Assembled inverted arch preliminary bracing（1）It is made of the splicing of multi-disc batch production prefabricated unit section of jurisdiction, gunite concrete arch wall initial stage
Supporting（2）Scene is performed using wet spraying process.
2. the assembled preliminary bracing structure according to claim 1 for realizing tunnel quick closure, it is characterised in that：
Assembled inverted arch preliminary bracing（1）Inside is provided with circumferential grid steel frame（3）, gunite concrete arch wall preliminary bracing
（2）Inside is provided with circumferential steelframe（4）, steelframe（4）Both ends bottom and the preliminary bracing of assembled inverted arch（1）End passes through connection
Fashioned iron（5）It is fixedly connected to form circumferential close ring.
3. the assembled preliminary bracing structure according to claim 1 for realizing tunnel quick closure, it is characterised in that：
Assembled inverted arch preliminary bracing（1）It is spelled by being longitudinally divided into polycyclic, the lateral batch production prefabricated unit section of jurisdiction for being divided into multi-segmental
Composition is connect, fissure of displacement splicing between longitudinal each ring.
4. the assembled preliminary bracing structure according to claim 3 for realizing tunnel quick closure, it is characterised in that：
Perpendicular to country rock on batch production prefabricated unit section of jurisdiction（10）It is provided with the injected hole of perforation（6）.
5. the assembled preliminary bracing structure according to claim 3 for realizing tunnel quick closure, it is characterised in that：
Connect fashioned iron（5）One end be welded on assembled inverted arch preliminary bracing（1）Interior grid steel frame（3）Factory is realized in end
Change welding；Connect fashioned iron（5）The other end in tunnel scene use bolt and steelframe（4）Bottom end connection.
6. the assembled preliminary bracing structure according to claim 2 for realizing tunnel quick closure, it is characterised in that：
Grid steel frame（3）Sub-unit is prefabricated together with batch production prefabricated unit section of jurisdiction, forms whole cellular construction, is unit shape
The grid steel frame concrete structure of formula.
7. the assembled preliminary bracing structure according to claim 3 for realizing tunnel quick closure, it is characterised in that：
Batch production prefabricated unit section of jurisdiction includes calibrated bolck in the same size and link block not of uniform size.
8. the assembled preliminary bracing structure according to claim 3 for realizing tunnel quick closure, it is characterised in that：
It is provided with screw hole on the end face of batch production prefabricated unit section of jurisdiction, passes through in screw hole between adjacent batch production prefabricated unit section of jurisdiction
Bolt realizes splicing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810925767.3A CN108843342A (en) | 2018-08-15 | 2018-08-15 | Realize the assembled preliminary bracing structure of tunnel quick closure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810925767.3A CN108843342A (en) | 2018-08-15 | 2018-08-15 | Realize the assembled preliminary bracing structure of tunnel quick closure |
Publications (1)
| Publication Number | Publication Date |
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| CN108843342A true CN108843342A (en) | 2018-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810925767.3A Pending CN108843342A (en) | 2018-08-15 | 2018-08-15 | Realize the assembled preliminary bracing structure of tunnel quick closure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763838A (en) * | 2019-03-13 | 2019-05-17 | 中铁第一勘察设计院集团有限公司 | Assembled inverted arch structure and its assembling method suitable for drill+blast tunnel |
| CN110219667A (en) * | 2019-07-05 | 2019-09-10 | 甘肃省交通规划勘察设计院股份有限公司 | Tunnel inverted arch and inverted arch filled layer substitution steel-concrete combined structure and construction technology |
| CN110486040A (en) * | 2019-07-08 | 2019-11-22 | 重庆交通大学 | A kind of prefbricated tunnel lining structure for vcehicular tunnel |
| CN111608699A (en) * | 2020-04-08 | 2020-09-01 | 贵州省公路工程集团有限公司 | Assembled inverted arch unit, assembled inverted arch structure and construction method |
| CN112145196A (en) * | 2020-09-30 | 2020-12-29 | 中铁二十局集团有限公司 | Tunnel inverted arch structure and construction method thereof |
| CN112696212A (en) * | 2020-12-31 | 2021-04-23 | 中铁二院工程集团有限责任公司 | Compressible tunnel bottom structure for inhibiting tunnel bottom bulging and construction method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763838A (en) * | 2019-03-13 | 2019-05-17 | 中铁第一勘察设计院集团有限公司 | Assembled inverted arch structure and its assembling method suitable for drill+blast tunnel |
| CN109763838B (en) * | 2019-03-13 | 2023-09-15 | 中铁第一勘察设计院集团有限公司 | Assembled inverted arch structure suitable for tunnel by drilling and blasting method and assembling method thereof |
| CN110219667A (en) * | 2019-07-05 | 2019-09-10 | 甘肃省交通规划勘察设计院股份有限公司 | Tunnel inverted arch and inverted arch filled layer substitution steel-concrete combined structure and construction technology |
| CN110219667B (en) * | 2019-07-05 | 2024-03-19 | 甘肃省交通规划勘察设计院股份有限公司 | Tunnel inverted arch and inverted arch filling layer substituted steel-concrete combined structure and construction process |
| CN110486040A (en) * | 2019-07-08 | 2019-11-22 | 重庆交通大学 | A kind of prefbricated tunnel lining structure for vcehicular tunnel |
| CN110486040B (en) * | 2019-07-08 | 2024-03-08 | 重庆交通大学 | Assembled lining structure for highway tunnel |
| CN111608699A (en) * | 2020-04-08 | 2020-09-01 | 贵州省公路工程集团有限公司 | Assembled inverted arch unit, assembled inverted arch structure and construction method |
| CN112145196A (en) * | 2020-09-30 | 2020-12-29 | 中铁二十局集团有限公司 | Tunnel inverted arch structure and construction method thereof |
| CN112696212A (en) * | 2020-12-31 | 2021-04-23 | 中铁二院工程集团有限责任公司 | Compressible tunnel bottom structure for inhibiting tunnel bottom bulging and construction method |
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