CN204152527U - The combined type preliminary bracing system of wall multiple-arch tunnel in implicit expression - Google Patents
The combined type preliminary bracing system of wall multiple-arch tunnel in implicit expression Download PDFInfo
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- CN204152527U CN204152527U CN201420590208.9U CN201420590208U CN204152527U CN 204152527 U CN204152527 U CN 204152527U CN 201420590208 U CN201420590208 U CN 201420590208U CN 204152527 U CN204152527 U CN 204152527U
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- Prior art keywords
- preliminary bracing
- board
- tunnel
- arch
- anchor pole
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- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 230000007774 longterm Effects 0.000 abstract description 2
- 238000004078 waterproofing Methods 0.000 abstract description 2
- 239000011435 rock Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses the combined type preliminary bracing system of wall multiple-arch tunnel in a kind of implicit expression, preliminary bracing structure (2) and secondary liner structure (3) form double-arch structure, lining cutting steelframe (4) is provided with between double-arch structure, the both sides of this lining cutting steelframe (4) are provided with interim mid-board (7), the lower end of this interim mid-board (7) is connected near lowest part with preliminary bracing structure (2) bottom, and the upper end of interim mid-board (7) is connected near vault place with preliminary bracing structure (2) top; Suspend anchor pole (8) in midair at the row self-advancing type that each side arranges of described interim mid-board (7) top, the bottom of self-advancing type suspention anchor pole (8) and the top of preliminary bracing structure (2) fix.The utility model ensure that the feasibility of wall multiple-arch tunnel scheme in implicit expression, makes it have good working security, waterproofing system integrality, structure durability and long-term safety, has broad application prospects in major long tunnel and city tunnel.
Description
Technical field
The utility model belongs to technical field of tunnel construction, specifically, and the particularly combined type preliminary bracing system of wall multiple-arch tunnel in implicit expression.
Background technology
The structural shape that multiple-arch tunnel adopts to mainly contain in monolithic wall multiple-arch tunnel in wall multiple-arch tunnel and combined type, also expedites the emergence of a lot of multiple-arch tunnel structural shape improved.But the parametrizations such as the many employings of multiple-arch tunnel preliminary bracing anchor pole both at home and abroad at present, the i.e. isometric design of system anchor bolt, causes this large-span structure of multiple-arch tunnel on the weak side in the folder petrographic province territory supporting of Zhong Qiang top, easily occurs this region surrouding rock deformation, fall block, cave in, and in multiple-arch tunnel employing temporarily during wall, due to large-span structure, Zhong Qiang top pressure from surrounding rock is very large, when wall is removed in interim, often cause excessive pressure from surrounding rock release, also cause preliminary bracing to be subject to the pressure effect of release suddenly.Thus causing preliminary bracing distortion, cracking, middle wall displacement, destruction, secondary lining problems of crack, jeopardizes Multi-arch Tunnel Construction safety and structural safety.
In general multiple-arch tunnel, wall has temporary support, waste of material, and potential safety hazard when temporary support is removed, affect the duration, and secondary liner structure experiences repeatedly the problem of stress state.And the middle wall alienation of wall multiple-arch tunnel, in tunnel, right side, exists the problem of size sudden change in implicit expression at middle wall and Tunnel junction, right side, the stress at this position is easily caused to concentrate.
Utility model content
Technical problem to be solved in the utility model is to provide the combined type preliminary bracing system of wall multiple-arch tunnel in a kind of implicit expression of structural safety when can ensure structural system safety and the dismounting of interim mid-board.
The technical solution of the utility model is as follows: the combined type preliminary bracing system of wall multiple-arch tunnel in a kind of implicit expression, secondary liner structure (3) is positioned at the internal layer of preliminary bracing structure (2), the outer lining cutting of supporting and protection structure (2) and secondary liner structure (3) in the early stage has anchor pole (1), described preliminary bracing structure (2) and secondary liner structure (3) form double-arch structure, lining cutting steelframe (4) is provided with between double-arch structure, wall (5) during this lining cutting steelframe (4) and sprayed mortar are formed, the top that the middle wall of lining cutting steelframe (4) erects support arranges diagonal brace (6), it is characterized in that: in the middle part of two tunnels, be provided with interim mid-board (7), the lower end of this interim mid-board (7) is connected near lowest part with preliminary bracing structure (2) bottom, the upper end of interim mid-board (7) is connected near vault place with preliminary bracing structure (2) top, anchor pole (8) is suspended in midair at the row self-advancing type that each side arranges of described interim mid-board (7) top, often row self-advancing type suspention anchor pole (8) is along the genesis analysis in tunnel, and the bottom of self-advancing type suspention anchor pole (8) and the top of preliminary bracing structure (2) fix.
The utility model folder petrographic province territory in wall multiple-arch tunnel Zhong Qiang top in implicit expression arranges non-grade and participates in fourdrinier wire shape anchor pole, carries out strengthening supporting to folder rock; Self-advancing type suspention anchor pole is adopted in the both sides at interim mid-board top, the stability of structure when ensureing that interim mid-board is removed, slow down preliminary bracing distortion, cracking, middle wall displacement, destruction, the disadvantages such as secondary lining cracking, ensure that Multi-arch Tunnel Construction safety and structural safety.Middle wall adopts double-deck profile steel frame, and adopts shaped steel lateral connection, and middle wall and right side Tunnel gradation zone adopt shaped steel diagonal brace, can avoid this region rigidity dash forward strain and stress concentrate.
In order to simplify structure, facilitate processing and fabricating, and guarantee the stability during preliminary bracing formation enclosed construction and reliability, as preferably, described interim mid-board (7) is arc-shaped steel shelf structure, and the interim mid-board (7) of lining cutting steelframe (4) both sides is parallel or symmetrical.
In order to make connection more firm, and be convenient to quick-detachment, the end of described interim mid-board (7) is removably connected by bolt and preliminary bracing structure (2).
As preferably, the distance often in row between two adjacent self-advancing types suspention anchor pole (8) is equal.
Beneficial effect: the utility model ensure that the feasibility of wall multiple-arch tunnel scheme in implicit expression, make it have good working security, waterproofing system integrality, structure durability and long-term safety, have broad application prospects in major long tunnel and city tunnel.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail:
As shown in Figure 1, preliminary bracing structure 2 is made up of left side Tunnel and right side Tunnel, and the inner side of supporting and protection structure 2 arranges secondary liner structure 3 in the early stage, and the outer lining cutting of preliminary bracing structure 2 and secondary liner structure 3 has anchor pole 1.Preliminary bracing structure 2 and secondary liner structure 3 form double-arch structure, are provided with lining cutting steelframe 4 between double-arch structure, wall 5 during this lining cutting steelframe 4 and sprayed mortar are formed, and the top that in lining cutting steelframe 4, wall erects support arranges diagonal brace 6.The set-up mode of above structure is same as the prior art, and therefore not to repeat here.
As shown in Figure 1, interim mid-board 7 is provided with in the middle part of two tunnels, this interim mid-board 7 is arc-shaped steel shelf structure, one of them interim mid-board 7 is positioned at left side Tunnel, another interim mid-board 7 is positioned at right side Tunnel, and the interim mid-board 7 of lining cutting steelframe 4 both sides is parallel or symmetrical.The lower end of interim mid-board 7 is by removably connecting near lowest part bottom bolt and preliminary bracing structure 2, and the upper end of interim mid-board 7 is removably connected near vault place by bolt and preliminary bracing structure 2 top.The row self-advancing type that each side arranges above each interim mid-board 7 suspends anchor pole 8 in midair, and often row self-advancing type suspention anchor pole 8 is along the genesis analysis in tunnel, and the distance often in row between two adjacent self-advancing types suspention anchor poles 8 is equal.The top of each self-advancing type suspention anchor pole 8 is fixed on the rock of tunnel upper, and the self-advancing type suspention bottom of anchor pole 8 and the top of preliminary bracing structure 2 fix.
Claims (3)
1. the combined type preliminary bracing system of wall multiple-arch tunnel in an implicit expression, secondary liner structure (3) is positioned at the internal layer of preliminary bracing structure (2), the outer lining cutting of supporting and protection structure (2) and secondary liner structure (3) in the early stage has anchor pole (1), described preliminary bracing structure (2) and secondary liner structure (3) form double-arch structure, lining cutting steelframe (4) is provided with between double-arch structure, wall (5) during this lining cutting steelframe (4) and sprayed mortar are formed, the top that the middle wall of lining cutting steelframe (4) erects support arranges diagonal brace (6), it is characterized in that: in the middle part of two tunnels, be provided with interim mid-board (7), the lower end of this interim mid-board (7) is connected near lowest part with preliminary bracing structure (2) bottom, the upper end of interim mid-board (7) is connected near vault place with preliminary bracing structure (2) top, anchor pole (8) is suspended in midair at the row self-advancing type that each side arranges of described interim mid-board (7) top, often row self-advancing type suspention anchor pole (8) is along the genesis analysis in tunnel, and the bottom of self-advancing type suspention anchor pole (8) and the top of preliminary bracing structure (2) fix.
2. the combined type preliminary bracing system of wall multiple-arch tunnel in implicit expression according to claim 1, it is characterized in that: described interim mid-board (7) is arc-shaped steel shelf structure, the interim mid-board (7) of lining cutting steelframe (4) both sides is parallel or symmetrical.
3. the combined type preliminary bracing system of wall multiple-arch tunnel in implicit expression according to claim 1 and 2, is characterized in that: the distance often in row between two adjacent self-advancing types suspention anchor pole (8) is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420590208.9U CN204152527U (en) | 2014-10-13 | 2014-10-13 | The combined type preliminary bracing system of wall multiple-arch tunnel in implicit expression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420590208.9U CN204152527U (en) | 2014-10-13 | 2014-10-13 | The combined type preliminary bracing system of wall multiple-arch tunnel in implicit expression |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204152527U true CN204152527U (en) | 2015-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420590208.9U Expired - Fee Related CN204152527U (en) | 2014-10-13 | 2014-10-13 | The combined type preliminary bracing system of wall multiple-arch tunnel in implicit expression |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204152527U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761836A (en) * | 2017-01-26 | 2017-05-31 | 湖南工程学院 | Without wall construction method in middle drift multiple-arch tunnel auxiliary |
| CN113250705A (en) * | 2021-06-28 | 2021-08-13 | 重庆工程职业技术学院 | Multi-arch tunnel construction method |
| CN115163086A (en) * | 2022-07-27 | 2022-10-11 | 中铁隧道勘察设计研究院有限公司 | Construction method for converting multi-arch tunnel into large-span tunnel |
-
2014
- 2014-10-13 CN CN201420590208.9U patent/CN204152527U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761836A (en) * | 2017-01-26 | 2017-05-31 | 湖南工程学院 | Without wall construction method in middle drift multiple-arch tunnel auxiliary |
| CN106761836B (en) * | 2017-01-26 | 2018-08-03 | 湖南工程学院 | Wall construction method in no middle drift multiple-arch tunnel auxiliary |
| CN113250705A (en) * | 2021-06-28 | 2021-08-13 | 重庆工程职业技术学院 | Multi-arch tunnel construction method |
| CN113250705B (en) * | 2021-06-28 | 2023-10-20 | 重庆工程职业技术学院 | Multi-arch tunnel construction method |
| CN115163086A (en) * | 2022-07-27 | 2022-10-11 | 中铁隧道勘察设计研究院有限公司 | Construction method for converting multi-arch tunnel into large-span tunnel |
| CN115163086B (en) * | 2022-07-27 | 2024-05-28 | 中铁隧道勘察设计研究院有限公司 | Construction method for converting multi-arch tunnel into large-span tunnel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150211 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |