CN205840895U - Stalk plate girder half assembled open-cut tunnel structure - Google Patents
Stalk plate girder half assembled open-cut tunnel structure Download PDFInfo
- Publication number
- CN205840895U CN205840895U CN201620767023.XU CN201620767023U CN205840895U CN 205840895 U CN205840895 U CN 205840895U CN 201620767023 U CN201620767023 U CN 201620767023U CN 205840895 U CN205840895 U CN 205840895U
- Authority
- CN
- China
- Prior art keywords
- abutment wall
- arch
- cut tunnel
- tunnel structure
- open
- Prior art date
- 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.)
- Active
Links
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
Stalk plate girder half assembled open-cut tunnel structure, the difficult problem that, construction quality excessive with effectively solution super-span open-cut tunnel structure thickness is difficult to ensure that.It includes: outside abutment wall and inner side abutment wall, constructs along circuit bearing of trend；Arch truss, is arranged along circuit bearing of trend interval, and its two ends are respectively supported on the cushion cap on outside abutment wall, abutment wall top, inner side；T-shaped top board, is laid on the truss of arch, and its length direction is circuit bearing of trend；Arch waterproof layer, applies on T-shaped top board；Backfill layer, fills on the waterproof layer of arch between abutment wall top, outside to side slope surface；Water barrier, covers backfill layer surface.
Description
Technical field
The present invention relates to open cut tunnel and build technical field, be specifically related to a kind of open-cut tunnel structure, it is adaptable to existing railway increasing is built bright
Hole structure, or super-span open-cut tunnel structure.
Background technology
Enter railway construction in China high speed development after 21st century, along with quickly and greatly advising of Southwest Mountainous Areas high-speed railway
Die repair is built, owing to the many factors such as, topographic and geologic complicated condition big by sweep, environmental requirement height are restricted, and Along Railway
It is extremely difficult that part location sets station condition.Therefore, build high-speed railway route selection for improving hardships and dangers mountain area, set the degree of freedom at station, make
Station, mountain area layout pattern is the most flexible, station function is more easy to be guaranteed, three lines, the station tunnel of four lines even more large span
Building of road will be the most, along with increase and the increase of time depth of fill of hole open cut tunnel liner structure span, for ensureing knot
Structure safety, open cut tunnel liner structure thickness is increasing.Design filled load in top, hole is tied less than 4m, general single-track railway open cut tunnel
Structure thickness is 60cm, and double track railway open-cut tunnel structure thickness is 80cm, and four-track line open cut tunnel (clear span 21m～about 25m) structure is thick
Degree reaches about 130cm；Being computed, to top, hole design filled load 30m, its lining thickness of the open-cut tunnel structure of clear span 25m is up to
2.5m, can not implement in Practical Project substantially.On the one hand, along with open cut tunnel span increases, structural thickness increases, and large volume is mixed
Solidifying soil difficulty of construction increases, and construction quality is difficult to control to, and the mass concrete heat of hydration can not be taked effectively to eliminate and produce temperature
Degree crack, causes the structure cannot life requirement.On the other hand, owing to open cut tunnel span increases, lining thickness increases, and causes coagulation
When soil pours, chassis carrying is greatly increased；Simultaneously because open cut tunnel span increase, lining trolley weight is increased dramatically, chassis load and
The problem brought that is increased dramatically of own wt is: the reliability of (1) trolley traveling system is difficult to ensure that；(2) chassis is in lining cutting
After concreting, sedimentation is difficult to control to.Therefore have a strong impact on open cut tunnel concrete pouring quality and operation uses function.
Secondly, in existing line operated, on the one hand destroying due to part hole slope vegetation, rockfall is grown,
For ensureing operation security, often need spreading open cut tunnel；On the other hand, due to preliminary engineering input, duration and the limit of route selection
System, occurs in that a lot of roadbed gradient slope, and part side slope issues in factor effects such as weathering erosion, earthquake, heavy showers and changes
The situations such as shape, cracking, supporting intensity decline, and even cave in, disrupted circuit operation.Can not be complete in conventional Slope Treatment means
Eliminate operation security hidden danger, or its engineering puts into huge, when not having economic rationality, can increase and build open cut tunnel on existing foundation of road bed
Engineering, to realize the permanent protection to region wire.Increase on the most wired and build the difficulty of open cut tunnel engineering and be, need at contact net
Construct in the case of not power-off, and use tradition open cut tunnel liner structure and construction method, the transport of lining trolley, assembled with
And trolley traveling is all insoluble difficulty in lining cutting pouring construction.Thus, it is ensured that the construction of existing railway spreading open cut tunnel connects
Touch net not power-off, ensure the safety of driving and workmen simultaneously, find novel open-cut tunnel structure form and construction method gesture must
OK.
Summary of the invention
The technical problem to be solved provides a kind of stalk plate girder half assembled open-cut tunnel structure, effectively to solve
The difficult problem that super-span open-cut tunnel structure thickness is excessive, construction quality is difficult to ensure that.
The technical solution adopted for the present invention to solve the technical problems is as follows:
The stalk plate girder half assembled open-cut tunnel structure of the present invention, is characterized in that it includes: outside abutment wall and inner side abutment wall, edge
Circuit bearing of trend is constructed；Arch truss, is arranged along circuit bearing of trend interval, and its two ends are respectively supported at outside abutment wall, interior
On the cushion cap on side wall top；T-shaped top board, is laid on the truss of arch, and its length direction is circuit bearing of trend；Arch is waterproof
Layer, applies on T-shaped top board；Backfill layer, fills on the waterproof layer of arch between abutment wall top, outside to side slope surface；Every
Water layer, covers backfill layer surface.
Described outside abutment wall, abutment wall top, inner side cushion cap on be provided with shock mount, being supported at both ends in of arch truss
On shock mount.
The invention has the beneficial effects as follows, be prevented effectively from super-span structure arch ring super-thickness and mass concrete and apply, it is to avoid
The mass concrete heat of hydration causes the generation of the problems such as Lining Crack, thus open-cut tunnel structure safety, quality and resistance to are effectively ensured
Property for a long time；Arch truss uses shock mount to be connected with both sides abutment wall, under rockfall effect, can effectively reduce falling rocks to lining cutting
The percussion of structure, it is ensured that structural safety during operation；It is greatly reduced arch dead load, saves construction cost；Need not
Lining trolley, easy construction is easy, can be used for the construction of newly-built super-span open cut tunnel it can also be used to existing railway increasing is built open cut tunnel and executed
Work.
Accompanying drawing explanation
This specification includes following five width accompanying drawings:
Fig. 1 is the sectional drawing of stalk plate girder half assembled open-cut tunnel structure of the present invention；
Fig. 2 is the front view of arch truss in stalk plate girder half assembled open-cut tunnel structure of the present invention；
Fig. 3 is the enlarged drawing of A local in Fig. 1；
Fig. 4, Fig. 5 are the schematic diagrams of stalk plate girder half assembled open-cut tunnel structure construction method of the present invention.
Figure shows component, toponym and corresponding labelling: base plate 10, outside abutment wall 21, inner side abutment wall 22, purlin, arch
Frame 30, pricncipal rafter 31a, truss lower boom 31b, vertical bar of truss 31c, truss diagonal web member 31d, T-shaped top board 40, arch is waterproof
Layer 50, backfills layer 60, water barrier 61, shock mount 70, Central drain 80.
Detailed description of the invention
The present invention is described in detail with embodiment below in conjunction with the accompanying drawings.
With reference to Fig. 1 and Fig. 3, the stalk plate girder half assembled open-cut tunnel structure of the present invention includes: outside abutment wall 21 and inner side edge
Wall 22, constructs along circuit bearing of trend；Arch truss 30, is arranged, outside its two ends are respectively supported at along circuit bearing of trend interval
Side wall 21, inner side abutment wall 22 top cushion cap on；T-shaped top board 40, is laid on arch truss 30, and its length direction is circuit
Bearing of trend；Arch waterproof layer 50, applies on T-shaped top board 40；Backfill layer 60, in outside abutment wall 21 top to side slope surface it
Between fill on arch waterproof layer 50；Water barrier 61, covers backfill layer 60 surface.
Employing arch, open cut tunnel arch truss 30 and T-shaped top board 40, be prevented effectively from super-span structure arch ring super thick large volume
Concrete applies, it is to avoid the mass concrete heat of hydration causes the generation of the problems such as Lining Crack, thus open cut tunnel knot is effectively ensured
Structure safety, quality and durability.It is greatly reduced arch dead load simultaneously, saves construction cost
With reference to Fig. 1, described outside abutment wall 21, inner side abutment wall 22 top cushion cap on be provided with shock mount 70, purlin, arch
Being supported at both ends on shock mount 70 of frame 30.Arch truss 30 and outside abutment wall 21, inner side abutment wall 22 use shock mount 70
Connect, under rockfall effect, the falling rocks percussion to liner structure can be effectively reduced, it is ensured that structure peace during operation
Entirely.
With reference to Fig. 1, can between described outside abutment wall 21, inner side abutment wall 22 lower end on the basis of arrange and prolong along line direction
The base plate 10 stretched, the transverse ends of base plate 10 consolidates with outside abutment wall 21, inner side abutment wall 22 respectively.Base plate arranges center water 10 times
Ditch 80.
With reference to Fig. 4, Fig. 5 and Fig. 1, stalk plate girder half assembled open-cut tunnel structure of the present invention is constructed as follows:
1. excavation section by section apply inner side abutment wall 22 and outside abutment wall 21；
2. base plate 10 is applied；
3. after inner side abutment wall 22 and outside abutment wall 21 reach design strength, lifting arch truss 30；
4. T-shaped top board 40 is laid；
5. on T-shaped top board 40, lay arch waterproof layer 50, and apply backfill layer 60 and water barrier 61；
6. the construction appurtenant work such as lateral sulcus and cable trench；
Repeat the above steps 1.～the most several times, until this section of open cut tunnel has been constructed.
Whole work progress need not lining trolley, and easy construction is easy, can be used for the construction of newly-built super-span open cut tunnel, also
Can be used for existing railway increasing and build open cut tunnel construction.
Claims (3)
1. stalk plate girder half assembled open-cut tunnel structure, is characterized in that it includes: outside abutment wall (21) and inner side abutment wall (22), along the line
Road bearing of trend is constructed；Arch truss (30), is arranged along circuit bearing of trend interval, and its two ends are respectively supported at outside abutment wall
(21), on the cushion cap on inner side abutment wall (22) top；T-shaped top board (40), is laid on arch truss (30), and its length direction is line
Road bearing of trend；Arch waterproof layer (50), applies on T-shaped top board (40)；Backfill layer (60), in outside abutment wall (21) top extremely
Fill between side slope surface on arch waterproof layer (50)；Water barrier (61), covers backfill layer (60) surface.
2. stalk plate girder half assembled open-cut tunnel structure as claimed in claim 1, is characterized in that: described outside abutment wall (21), interior
Be provided with shock mount (70) on the cushion cap on side wall (22) top, arch truss (30) be supported at both ends in shock mount (70)
On.
3. stalk plate girder half assembled open-cut tunnel structure as claimed in claim 1, is characterized in that: described outside abutment wall (21), interior
Between side wall (22) lower end on the basis of the base plate (10) extended along line direction is set, the transverse ends of base plate (10) is respectively
With outside abutment wall (21), inner side abutment wall (22) consolidation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620767023.XU CN205840895U (en) | 2016-07-20 | 2016-07-20 | Stalk plate girder half assembled open-cut tunnel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620767023.XU CN205840895U (en) | 2016-07-20 | 2016-07-20 | Stalk plate girder half assembled open-cut tunnel structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205840895U true CN205840895U (en) | 2016-12-28 |
Family
ID=57625807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620767023.XU Active CN205840895U (en) | 2016-07-20 | 2016-07-20 | Stalk plate girder half assembled open-cut tunnel structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205840895U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050273A (en) * | 2016-07-20 | 2016-10-26 | 中铁二院工程集团有限责任公司 | Straight-wall-plate-girder semi-assembling type open-cut tunnel structure and construction method thereof |
| CN110242306A (en) * | 2019-06-28 | 2019-09-17 | 四川省交通勘察设计研究院有限公司 | Open cut tunnel anti-side laminated structure and construction method |
-
2016
- 2016-07-20 CN CN201620767023.XU patent/CN205840895U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050273A (en) * | 2016-07-20 | 2016-10-26 | 中铁二院工程集团有限责任公司 | Straight-wall-plate-girder semi-assembling type open-cut tunnel structure and construction method thereof |
| CN110242306A (en) * | 2019-06-28 | 2019-09-17 | 四川省交通勘察设计研究院有限公司 | Open cut tunnel anti-side laminated structure and construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103485288B (en) | A kind ofly pass through both wired double-deck jacking culvert construction technology | |
| CN108005664A (en) | A kind of hole pile construction method of platform structure | |
| CN102226399A (en) | Soft rock four-line large-span tunnel three-bench cable-bracing excavation construction method | |
| CN105862930B (en) | A kind of protection structure to creating existing tunnel below underground engineering | |
| CN102226398A (en) | Soft rock four-line large-span tunnel compound double-side wall bracing cable conversion excavation construction method | |
| CN103572765B (en) | Treatment and construction method of bridge site river bank expansive soil landslide positions | |
| CN107130613A (en) | Large span tunnel is just wearing the retaining structure and its construction method of existing barricade | |
| CN102226407A (en) | Four-line large-span tunnel cable-arch combined primary support structure | |
| CN103967031A (en) | Caisson and pile combined foundation of consolidated subsoil and construction method of caisson and pile combined foundation | |
| CN202989952U (en) | Tunnel lining structure with pile-foundation bearing arch | |
| CN105587320B (en) | Rich water sand-pebble layer abnormal shape deep shaft structural system and its construction method | |
| CN205387720U (en) | Tertiary light -duty retaining structure of double circular pile pile foundation of superelevation embankment | |
| CN110158389A (en) | A kind of light soil road structure and its construction method | |
| CN106050262A (en) | Composite lining structure for super-large-span pile-foundation-joist-based bearing arched tunnel and construction method thereof | |
| CN103290847A (en) | Inner oblique beam supporting structure for oversized-area deep foundation pit and construction method | |
| CN105672450A (en) | Laying method for large-aperture water draining pipeline parallel to upper part of existing metro tunnel structure | |
| CN205840895U (en) | Stalk plate girder half assembled open-cut tunnel structure | |
| CN102146676A (en) | High-steep side slope subgrade structure for mountain area | |
| CN205805574U (en) | A kind of super-span pile foundation joist carrying arch tunnel recombination liner structure | |
| CN202148907U (en) | Non-isoparametric initial-stage supporting structure of four-lane large-span tunnel | |
| CN106050273A (en) | Straight-wall-plate-girder semi-assembling type open-cut tunnel structure and construction method thereof | |
| CN108166395A (en) | A kind of construction method that beam bridge is built across Business Line | |
| CN209669613U (en) | A kind of road structure with pile foundation bent cap | |
| CN105569055B (en) | A kind of structure for preventing landslide | |
| CN206667263U (en) | A kind of foundation pit supporting construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |