CN105888698A - Tunnel primary support structure with built-in steel pipe frame - Google Patents
Tunnel primary support structure with built-in steel pipe frame Download PDFInfo
- Publication number
- CN105888698A CN105888698A CN201610410576.4A CN201610410576A CN105888698A CN 105888698 A CN105888698 A CN 105888698A CN 201610410576 A CN201610410576 A CN 201610410576A CN 105888698 A CN105888698 A CN 105888698A
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- section
- steel pipe
- wall section
- steelframe
- abutment wall
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- Pending
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 66
- 239000010959 steel Substances 0.000 title claims abstract description 66
- 239000004567 concrete Substances 0.000 claims abstract description 35
- 239000011378 shotcrete Substances 0.000 claims abstract description 18
- 239000011435 rock Substances 0.000 claims abstract description 13
- 238000009412 basement excavation Methods 0.000 claims abstract description 6
- 230000010412 perfusion Effects 0.000 claims description 11
- 239000002689 soil Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 description 11
- 238000005452 bending Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a tunnel primary support structure with a built-in steel pipe frame, and aims to effectively improve mechanical properties of a primary support, avoid buckling instability of a steel frame and fully achieve the structural strength of the primary support. The tunnel primary support structure comprises a sprayed concrete layer covering cave surrounding rock, and steel frames embedded in the sprayed concrete layer at intervals in the tunnel excavation direction, and is characterized in that the steel frames are steel pipe frames of which the cross sections are circular; the steel pipe frame consists of a left-side wall section, an arch top section and a right-side wall section which are butted with one another, or consists of a left-side wall section, an arch top section, a right-side wall section and an inverted arch section which are butted with one another; the left-side wall section, the right-side wall section and the inverted arch section of the steel pipe frame are filled with concrete.
Description
Technical field
The present invention relates to tunnel, particularly to a kind of Tunnel structure.
Background technology
At present, bored tunnel is the most all constructed by New Austrian Tunneling Method principle, uses composite lining supporting,
Including preliminary bracing and secondary lining.Wherein, the support system that preliminary bracing and country rock collectively constitute is
Primary load bearing structure, secondary lining is mainly as safety stock.
Preliminary bracing is mainly formed (letter by shotcrete layer, anchor pole and reinforced mesh combined supporting
Claim combined bolting and shotcrete), when tunnel is by bad geological section and fractured weak zone, typically can take
Pneumatically placed concrete arranges the ancillary method such as I-steel, H profile steel.
In recent years, be stained with six, Lan Yu, Cheng Lan, Yun Gui, the investigation of the railway such as long elder brother find, for portion
Divide by weak broken wall rock, fault belt, the tunnel in soft rock high-ground stress location, preliminary bracing
Shaped Steel steelframe often occurs flexing unstability to cause preliminary bracing to destroy.Trace it to its cause, due to shaped steel
Steelframe is I-shaped or H-shaped, and its cross section differs relatively big in X-direction and Y-direction bending rigidity, then
Owing to being difficult to ensure that I-steel or H profile steel are by tunnel side wing edge and web junction gunite concrete
Closely knit, cause pneumatically placed concrete that the bond stress of steelframe can not effectively be played.Therefore in high-ground stress location,
Particularly after preliminary bracing pneumatically placed concrete ftractures, the restriction ability of steelframe is weakened, owing to cross section resists
Curved Stiffness elasticity coupling, causes steelframe generation flexing due to the outer unstability of plane.
Summary of the invention
The technical problem to be solved be to provide a kind of in set the tunnel initial-stage of steel pipe steelframe and prop up
Protect structure, to be effectively improved preliminary bracing stress performance, it is to avoid steelframe generation flexing unstability, it is ensured that just
Phase supporting construction intensity gives full play to.
The technical solution adopted for the present invention to solve the technical problems is as follows:
The present invention a kind of in set the Tunnel structure of steel pipe steelframe, including covering rock around hole
Shotcrete layer, and be spaced the steel that is embedded in shotcrete layer along tunnel excavation direction
Frame, is characterized in that: described steelframe is the steel pipe steelframe of circular in cross-section, and steel pipe steelframe is by docking
Left side abutment wall section, crown section and right side abutment wall section are constituted, or by the left side abutment wall section docked, vault
Section, right side abutment wall section and inverted arch section are constituted, abutment wall section on the left of described steel pipe steelframe, right side abutment wall section,
Inverted arch section is concrete perfusion in steel pipe steelframe.
The invention has the beneficial effects as follows, steel pipe steelframe cross section bending rigidity is symmetrical, will not occur outside plane
Unstability, eliminate i-beam frame or H profile steel frame in tradition preliminary bracing has extremely with gunite concrete simultaneously
The uncompacted problem in angle, it is ensured that pneumatically placed concrete effectively bonding steelframe, gives full play to steel pipe injection mixed
The structural strength of solidifying soil；Owing to tunnel perimeter stress is inconsistent, according to supporting construction stressing conditions, right
The position that stress is bigger, can be prior to concrete perfusion in steel pipe steelframe, increasing section bending rigidity and strong
Degree, thus realize mating " unbalanced " supporting construction of pressure from surrounding rock.
Accompanying drawing explanation
This specification includes following five width accompanying drawings:
Fig. 1 be the present invention a kind of in set steel pipe steelframe Tunnel structure facade layout drawing；
Fig. 2 is the profile of I-I line along Fig. 1；
Fig. 3 be the present invention a kind of in set steel pipe steelframe Tunnel structure in steel pipe steelframe
Schematic cross-sectional view；
Fig. 4 be the present invention a kind of in set steel pipe steelframe Tunnel structure transverse section signal
Figure；
Fig. 5 be the present invention a kind of in set steel pipe steelframe Tunnel structure transverse section signal
Figure；
Component shown in figure, toponym and corresponding labelling: around hole rock 10；Gunite concrete
20, first pneumatically placed concrete layer 20a, multiple pneumatically placed concrete layer 20b；Steel pipe steelframe 30；Concrete 31, arch
Top section 32, left side abutment wall section 33, right side abutment wall section 34, inverted arch section 35；Prearrangement of deformation amount seam 40,
Secondary lining 50.
Detailed description of the invention
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
See figures.1.and.2, the present invention a kind of in set steel pipe steelframe Tunnel structure,
Including covering the shotcrete layer 20 of rock 10 around hole, and bury underground along interval, tunnel excavation direction
Steelframe in shotcrete layer 20.With reference to Fig. 3, described steelframe is the steel of circular in cross-section
Tube steel frame 30.With reference to Fig. 4, described steel pipe steelframe 30 is by the left side abutment wall section 33 docked, crown section
32 and right side abutment wall section 34 constitute, in left side abutment wall section 33 and right side abutment wall section 34, perfusion is filled mixed
Solidifying soil 31.With reference to Fig. 5, described steel pipe steelframe 30 is by the left side abutment wall section 33 docked, crown section 32
Constitute with, right side abutment wall section 34 and inverted arch section 35, left side abutment wall section 33, right side abutment wall section 34 grades
Perfusion fill concrete 31 in inverted arch section 35.I.e. according to supporting construction stressing conditions, bigger to pressurized
Position, can be prior to concrete perfusion in steel pipe steelframe, increasing section comprcssive strength, thus realize
Join " unbalanced " supporting construction of pressure from surrounding rock.
With reference to Fig. 2, described shotcrete layer 20 is by first pneumatically placed concrete layer 20a and multiple pneumatically placed concrete
Layer 20b is compound to be constituted, and first pneumatically placed concrete layer 20a covers rock 10 around hole, multiple pneumatically placed concrete layer 20b
Cover steel pipe steelframe 30.Just the thickness of pneumatically placed concrete layer 20a is general according to preliminary bracing requirement of strength
Not less than 4cm, after erecting steel pipe steelframe 30, multiple pneumatically placed concrete layer 20b.
With reference to Fig. 1 and Fig. 2, the present invention a kind of in set the Tunnel structure of steel pipe steelframe with
Traditional preliminary bracing gunite concrete is buried underground the supporting construction phase of I shape steelframe or H profile steel frame
Relatively there is a following essential distinction:
1, being circular due to steel pipe steelframe 30 cross section, cross section bending rigidity is symmetrical, and plane will not occur
Outer unstability, improves the stability in the large of preliminary bracing structure；
2, I-steel or H profile steel and gunite concrete during steel pipe steelframe 30 eliminates tradition preliminary bracing
There is the uncompacted problem in dead angle, it is ensured that pneumatically placed concrete effectively bonds steel pipe steelframe, gives full play to steel
The structural strength of tube steel frame gunite concrete.
3, can be according to tunnel perimeter pressure from surrounding rock situation, if needing to increase the pressure resistance of certain section of supporting
Degree and rigidity, can be conveniently realized by concrete perfusion in steel pipe steelframe 30, it is to avoid
Rely on traditionally and be continuously increased i-beam frame or the way of H profile steel frame height.
With reference to Fig. 4, after tunnel excavation, as a example by arch wall scope preliminary bracing, steel pipe steelframe is set,
Not concrete perfusion in crown section 32 steel pipe steelframe 30, with tradition I shape or H profile steel supporting phase
Ratio, can reduce supporting construction oneself gravity, reduces structural internal force.And to left side abutment wall section 33, the right side
The steel pipe steelframe 30 of side wall section 34 first concrete perfusion before the mounting, increases supporting construction cross section
Rigidity and intensity, increase supporting construction anti-pressure ability, reduces eccentric throw, thus the initial stage that is substantially improved props up
Protection structure stress performance.
With reference to Fig. 5, after tunnel excavation, as a example by arranging steel pipe steelframe in loopful preliminary bracing, vault
Not concrete perfusion in section 32 steel pipe steelframes 30, compared with tradition I shape or H profile steel supporting,
Supporting construction oneself gravity can be reduced, reduce structural internal force.And to left side abutment wall section 33, right edge
The steel pipe steelframe 30 of wall section 34 and inverted arch section 35 first concrete perfusion before the mounting, increases supporting
Shaped structural section rigidity and intensity, increase supporting construction anti-pressure ability, reduces eccentric throw, thus significantly changes
Kind preliminary bracing structure tension performance.
The Tunnel of steel pipe steelframe is set in the above present invention that simply explains through diagrams is a kind of
Some principles of structure, are not intended to shown in the present invention being confined to and described concrete structure is with applicable
In the range of, therefore every corresponding amendment being likely utilized and equivalent, belong to institute of the present invention
The scope of the claims of application.
Claims (2)
1. set the Tunnel structure of steel pipe steelframe in one kind, including covering rock (10) around hole
Shotcrete layer (20), and along tunnel excavation direction interval be embedded in shotcrete layer (20)
Interior steelframe, is characterized in that: described steelframe is the steel pipe steelframe (30) of circular in cross-section, this steel
Tube steel frame (30) is by left side abutment wall section (33) docked, crown section (32) and right side abutment wall section (34)
Constitute, or by left side abutment wall section (33) docked, crown section (32), right side abutment wall section (34)
Constitute with inverted arch section (35), described left side abutment wall section (33), right side abutment wall section (34) and inverted arch
Perfusion fill concrete (31) in section (35).
The most as claimed in claim 1 a kind of in set steel pipe steelframe Tunnel structure, its
Feature is: described shotcrete layer (20) is by first pneumatically placed concrete layer (20a) and multiple pneumatically placed concrete
Layer (20b) is compound to be constituted, and first pneumatically placed concrete layer (20a) covers rock (10) around hole, and multiple spray is mixed
Solidifying soil layer (20b) covers steel pipe steelframe (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610410576.4A CN105888698A (en) | 2016-06-12 | 2016-06-12 | Tunnel primary support structure with built-in steel pipe frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610410576.4A CN105888698A (en) | 2016-06-12 | 2016-06-12 | Tunnel primary support structure with built-in steel pipe frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105888698A true CN105888698A (en) | 2016-08-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610410576.4A Pending CN105888698A (en) | 2016-06-12 | 2016-06-12 | Tunnel primary support structure with built-in steel pipe frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105888698A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013222A (en) * | 2017-05-28 | 2017-08-04 | 中铁五局集团有限公司 | A kind of the middle regions of the Yunnan Province red beds tunnel milling digging construction method close to existing railway |
| CN108868826A (en) * | 2018-07-06 | 2018-11-23 | 中铁二院工程集团有限责任公司 | Tunnel Gushing section primary support structure with ribbing and construction method |
| CN113565544A (en) * | 2021-08-02 | 2021-10-29 | 中铁二院工程集团有限责任公司 | Tunnel support steel frame assembly and tunnel support construction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10176488A (en) * | 1996-12-18 | 1998-06-30 | Nippon Steel Corp | Lining structure for existing tunnel |
| KR100549691B1 (en) * | 2004-10-28 | 2006-02-07 | 재단법인 포항산업과학연구원 | A steel- concrete composite lining system for road tunnel and construction method |
| CN103615273A (en) * | 2013-12-04 | 2014-03-05 | 山东大学 | Square steel confined concrete arch center wall back filling bolting-grouting support system and construction method |
| CN205154191U (en) * | 2015-12-08 | 2016-04-13 | 四川省交通运输厅公路规划勘察设计研究院 | Tunnel preliminary bracing steel pipe concrete steelframe |
| CN205714226U (en) * | 2016-06-12 | 2016-11-23 | 中铁二院工程集团有限责任公司 | The Tunnel structure of steel pipe steelframe is set in a kind of |
-
2016
- 2016-06-12 CN CN201610410576.4A patent/CN105888698A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10176488A (en) * | 1996-12-18 | 1998-06-30 | Nippon Steel Corp | Lining structure for existing tunnel |
| KR100549691B1 (en) * | 2004-10-28 | 2006-02-07 | 재단법인 포항산업과학연구원 | A steel- concrete composite lining system for road tunnel and construction method |
| CN103615273A (en) * | 2013-12-04 | 2014-03-05 | 山东大学 | Square steel confined concrete arch center wall back filling bolting-grouting support system and construction method |
| CN205154191U (en) * | 2015-12-08 | 2016-04-13 | 四川省交通运输厅公路规划勘察设计研究院 | Tunnel preliminary bracing steel pipe concrete steelframe |
| CN205714226U (en) * | 2016-06-12 | 2016-11-23 | 中铁二院工程集团有限责任公司 | The Tunnel structure of steel pipe steelframe is set in a kind of |
Non-Patent Citations (1)
| Title |
|---|
| 刘迎春: "《上承式拉索组合拱桥静力性能研究》", 《公路》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013222A (en) * | 2017-05-28 | 2017-08-04 | 中铁五局集团有限公司 | A kind of the middle regions of the Yunnan Province red beds tunnel milling digging construction method close to existing railway |
| CN108868826A (en) * | 2018-07-06 | 2018-11-23 | 中铁二院工程集团有限责任公司 | Tunnel Gushing section primary support structure with ribbing and construction method |
| CN108868826B (en) * | 2018-07-06 | 2023-11-17 | 中铁二院工程集团有限责任公司 | Construction method of ribbed primary support structure of tunnel water burst section |
| CN113565544A (en) * | 2021-08-02 | 2021-10-29 | 中铁二院工程集团有限责任公司 | Tunnel support steel frame assembly and tunnel support construction method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160824 |