CN206419041U - It is a kind of to be used to reduce the scaffolding structure that cut-and-cover tunnel excavates interim slope - Google Patents
It is a kind of to be used to reduce the scaffolding structure that cut-and-cover tunnel excavates interim slope Download PDFInfo
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- CN206419041U CN206419041U CN201720072291.4U CN201720072291U CN206419041U CN 206419041 U CN206419041 U CN 206419041U CN 201720072291 U CN201720072291 U CN 201720072291U CN 206419041 U CN206419041 U CN 206419041U
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- steel plate
- supporting steel
- slope
- tunnel
- reduce
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Abstract
It is used to reduce the scaffolding structure that cut-and-cover tunnel excavates interim slope the utility model discloses a kind of, supporting steel plate (1) including being arranged on tunnel (9) vault, steel frame column (2) for supporting supporting steel plate (1), steelframe crossbeam (3) for fixing steel frame column (2), and for strengthening fixing supporting steel plate (1) and supporting steel plate (1), supporting steel plate (1) and supporting steel plate (1) and the steelframe diagonal brace (4) of supporting steel plate (1) and steelframe crossbeam (3).When tunnel entrance is located at and tilts obvious landform; by by the structure be moved into hole and fixation form temporary support; ensure at tunnel entrance position not by side slope and face upward hill wash and collapse the danger at covering hole; and the excavation gradient of interim face-upward slope can be reduced; largely reduce brush side's amount of one side; ecosystem vegetation and entrance landscape are protected, the safety coefficient at hole is improved, it is possible to reduce construction costs.
Description
Technical field：
The utility model is related to the temporary support structures during a kind of tunnel excavation, and in particular to one kind is used to reduce tunnel
Road open cut tunnel excavates the scaffolding structure of interim slope.
Background technology：
Before tunnel, to ensure the stabilization of openings position and the working space of open cut tunnel construction, often to be faced
Shi Bianpo and the excavation for facing upward slope, the slope ratio of slope Permanent Slope ratio of slope more general than roadbed are big, are 1:0.5~1:0.75.At hole
Without when substantially bias, tunnel axis are orthogonal with topographic contour, it is relatively reasonable that this enters hole method, interim slope excavated volume less and
Later stage backfill processing is also relatively easy to.But, influenceed by route ordering plan, tunnel axis and earth's surface contour low-angle are oblique
The situation into hole is handed over also often to occur, in this case, openings position earth's surface cross fall is larger, traditional interim slope side
It is extremely unreasonable that case just shows.When earth's surface cross fall is larger, often side progress is less for paragraph of the tunnel before hole is entered
Slope, and opposite side will carry out the brush slope (see accompanying drawing 3) of three-level level Four or higher, itself, brush slope are to ensure tunnel
Road enters the stability at hole, and such high slope scheme is run counter to desire increases the potential safety hazard at hole on the contrary, also, carries out hole
The high slope brush slope of mouth is serious to original landscape destruction at hole, does not meet the design concept of environmental protection, the later stage is backfilled
Or greening also all can be relatively difficult.
Utility model content：
The purpose of this utility model is to provide a kind of scaffolding structure for being used to reduce the interim slope of cut-and-cover tunnel excavation, its energy
Enough height and excavated volume for reducing unilateral interim side slope to greatest extent in the case where ensureing tunnel portal safety, are protected simultaneously
Hole natural landscape, it is to avoid later stage complicated backfill and greening work, has saved engineering cost.
To reach above-mentioned purpose, the utility model adopts the following technical scheme that to realize：
A kind of scaffolding structure for being used to reduce the interim slope of cut-and-cover tunnel excavation, including it is arranged on the Support Steel of tunnel vault
Plate, the steel frame column for supporting supporting steel plate, the steelframe crossbeam for fixing steel frame column, and for strengthening fixing supporting
Steel plate and supporting steel plate, supporting steel plate and supporting steel plate and the steelframe diagonal brace of supporting steel plate and steelframe crossbeam.
The utility model, which is further improved, to be, supporting steel plate passes through the fixing bolt system of linking together by multilayer steel plates
Into.
The utility model, which is further improved, to be, steel frame column steelframe crossbeam and steelframe diagonal brace use I-shaped steel
Into.
The utility model, which is further improved, to be, the top of the scaffolding structure is higher than 0.5m at the top of open cut tunnel, supporting steel plate
Thickness be 1cm, and be provided with the gradient.
The utility model, which is further improved, to be, the scaffolding structure is arranged on tunnel top and excavates massif bottom, also wraps
Include and be welded on supporting steel plate bottom and excavate the one-level slope supporting steel plate that massif is close to the former of both sides.
The utility model, which is further improved, to be, in addition to is welded at the top of supporting steel plate and is close to original excavation massif
Two grades of slope supporting steel plates.
Compared with prior art, the utility model has the advantage of：
1st, in terms of construction cost：Original technology excavation project amount is big, and side slope protection takes height；The utility model greatly reduces out
Dig and side slope protection expense.
2nd, in terms of construction safety：Original technology in high cut slope excavation in the presence of higher construction safety risk, while easily drawing
Hair massif caves in；The utility model can reduce massif disturbance, keep the original state structure of massif, reduce native stone excavated volume.
3rd, in terms of environmental protection：Original technology excavation face is big, and vegetation deterioration is serious, big to periphery eco-environmental impact, abandons
The quantity of slag is big, easily causes environmental pollution；Vegetation deterioration is small when the utility model can to excavate, and protects ecosystem environment, meets
Ecological harmonious theory.
4th, in terms of the construction period：Former technology can increase the constructing tunnel cycle in the digging process of larger earth volume, drag slow
Project progress；The utility model can reduce native stone excavated volume as far as possible, accordingly while engineering safety construction is ensured
Also backfill amount will be reduced, therefore can be with ideal shortening construction period.
5th, by the protective effect of frame, the slope ratio of slope of interim face-upward slope can be increased, by interim face-upward slope ratio of slope by
1:0.5~1:0.75 is changed into 1:0.2, so as to reduce excavated volume and later stage backfill amount, the original scape in hole is protected to the full extent
See.
Brief description of the drawings：
Fig. 1 is structural representation of the present utility model；
Fig. 2 is fixing bolt detail drawing in the utility model structure；
Fig. 3 is the utility model front view；
Fig. 4 is the utility model left view.
Each label is represented in figure：1-supporting steel plate, 2-steel frame column, 3-steelframe crossbeam, 4-steelframe diagonal brace, 5-fixation spiral shell
Bolt, 6-tunnel top excavate massif, 7-one-level slope supporting steel plate, 8-two grades of slope supporting steel plates, 9-tunnel, 10-original slopes
Ratio of slope, 11-original excavate massif.
Embodiment：
Specific embodiment of the utility model given below is, it is necessary to which explanation is that the utility model is not limited to following tool
Body embodiment, all equivalents done on the basis of technical scheme each fall within protection domain of the present utility model.
Embodiment is a kind of to be used to reduce the frame knot that cut-and-cover tunnel excavates interim slope referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4
Structure, includes the supporting steel plate 1 of tunnel vault, and its connected steel frame column 2, steelframe crossbeam 3, steelframe diagonal brace 4 and fixation
Bolt 5；Also include one or two grades of supporting steel plates 7,8, therebetween and with tunnel vault top steel plate by being welded to connect
Together.
The I-shaped steel that top plate steel plate 1, steel frame column 2, steelframe crossbeam 3 and steelframe diagonal brace 4 are commonly used using constructing tunnel
Make.The I-steel of top support structure is longitudinally arranged spacing for 1.5m along along tunnel.
During construction, mainly comprise the following steps：
After the excavation of open cut tunnel upper formation 6, the construction of tunnel vault top steel plate 1 is carried out, the structure includes tunnel vault
Top steel plate and bottom bearing structure, higher than 0.5m at the top of open cut tunnel during construction, length can carry out making tune according to actual landform
It is whole.The thickness 1cm of top steel plate 1, has 0.5m overlap joint platform with both sides side slope, it is ensured that it is not moved.Spiral shell is fixed by front two rows
Top steel plate and bottom bearing structure 1 are connected to form entirety by bolt 5, and ensure that top steel plate has 5% gradient, for the rainy day
Self-draining.
Carry out steel frame column 2, steelframe crossbeam 3, when steelframe diagonal brace 4 is constructed.The progress of steel frame column 2 and top plate steel plate 1 is welded
Connect in succession, and certain depth is in depth descended in the bottom of steel frame column 2.It is horizontal that steelframe is performed apart from the distance below of top plate steel plate 1
After beam 3, bilateral symmetry steelframe diagonal brace 4 and the welding between steelframe crossbeam 3 and top steel plate 1 are carried out.
In the case of improving original slope ratio of slope 10 and reducing excavation massif 11, cut-and-cover tunnel excavates slope ratio of slope and reaches 1:
After 0.2, the construction of tunnel both wings one or two grades of supporting steel plates 7,8 is then carried out, the bottom of one level of support steel plate 7 in depth next depthkeeping
Degree, it is ensured that compared with large bearing capacity, then welded at one or two grades of slope stages with two grades of supporting steel plates 8 and top steel plate 1.This
In embodiment, more original 4 grades of slopes, the utility model slope series is 2 grades, existing by a relatively large margin smaller.
After frame overall structure is formed, lower vehicle with normal pass, can carry out the construction in tunnel 9.It ensure that tunnel
Construction stage tunnel portal it is unobstructed, it is to avoid the stability problem on slope is faced upward during by unfavorable geology and hole zero to be influenceed.To greatest extent
Reduce the height and excavated volume of unilateral interim side slope, while protecting hole natural landscape, it is to avoid later stage complicated backfill with
Greening work, has saved engineering cost.
In summary, the utility model has the following advantages：
1st, the frame is prefabricated in advance, is faced upward in side slope after slope just excavates, is maintaining original, of short duration stabilization
During property, moved in place in time, and carry out the gib of side slope.
2nd, the frame itself has certain altitude, can be in its lower progress open cut tunnel lining construction.Have one at the top of frame
The fixed gradient 5%, can be carried out interim from draining in rainy weather.
3rd, after the frame is moved in place frame bottom in depth under, it is ensured that it is not moved, top steel plate and both sides side slope
There is 0.5m overlap joint platform, it is ensured that linking is steady, and structure itself has larger bearing capacity and larger rigidity.
4th, the frame can ensure the unobstructed of tunnel portal in the constructing tunnel stage, it is to avoid by unfavorable geology and hole zero
Shi Yangpo stability problem influence.Top plate can carry out gib construction as construction operation platform to top face-upward slope
Work.
Claims (6)
1. a kind of be used to reduce the scaffolding structure that cut-and-cover tunnel excavates interim slope, it is characterised in that including being arranged on tunnel (9)
The supporting steel plate (1) of vault, the steel frame column (2) for supporting supporting steel plate (1), the steelframe for fixing steel frame column (2)
Crossbeam (3), and for strengthen fixing supporting steel plate (1) and supporting steel plate (1), supporting steel plate (1) and supporting steel plate (1) and
The steelframe diagonal brace (4) of supporting steel plate (1) and steelframe crossbeam (3).
2. a kind of scaffolding structure for being used to reduce the interim slope of cut-and-cover tunnel excavation according to claim 1, its feature exists
In supporting steel plate (1) is linked together by fixing bolt (5) by multilayer steel plates and is made.
3. a kind of scaffolding structure for being used to reduce the interim slope of cut-and-cover tunnel excavation according to claim 1, its feature exists
In steel frame column (2) steelframe crossbeam (3) and steelframe diagonal brace (4) are made of I-steel.
4. a kind of scaffolding structure for being used to reduce the interim slope of cut-and-cover tunnel excavation according to claim 1, its feature exists
In the top of the scaffolding structure is higher than 0.5m at the top of open cut tunnel, and the thickness of supporting steel plate (1) is 1cm, and is provided with the gradient.
5. a kind of scaffolding structure for being used to reduce the interim slope of cut-and-cover tunnel excavation according to claim 1, its feature exists
Tunnel top is arranged in, the scaffolding structure and excavates massif (6) bottom, in addition to is welded on supporting steel plate (1) bottom and with two
The former of side excavates the one-level slope supporting steel plate (7) that massif (11) is close to.
6. a kind of scaffolding structure for being used to reduce the interim slope of cut-and-cover tunnel excavation according to claim 5, its feature exists
In, in addition to be welded at the top of supporting steel plate (1) and excavate two grades of slope supporting steel plates (8) that massif (11) is close to former.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720072291.4U CN206419041U (en) | 2017-01-20 | 2017-01-20 | It is a kind of to be used to reduce the scaffolding structure that cut-and-cover tunnel excavates interim slope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720072291.4U CN206419041U (en) | 2017-01-20 | 2017-01-20 | It is a kind of to be used to reduce the scaffolding structure that cut-and-cover tunnel excavates interim slope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206419041U true CN206419041U (en) | 2017-08-18 |
Family
ID=59572942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720072291.4U Expired - Fee Related CN206419041U (en) | 2017-01-20 | 2017-01-20 | It is a kind of to be used to reduce the scaffolding structure that cut-and-cover tunnel excavates interim slope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206419041U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905821A (en) * | 2017-12-20 | 2018-04-13 | 贵州大学 | The roadway support structure that truss coordinates with metallic support |
| CN108756934A (en) * | 2018-06-01 | 2018-11-06 | 招商局重庆交通科研设计院有限公司 | Run disease tunnel assembled treatment structures construction operation trolley |
-
2017
- 2017-01-20 CN CN201720072291.4U patent/CN206419041U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905821A (en) * | 2017-12-20 | 2018-04-13 | 贵州大学 | The roadway support structure that truss coordinates with metallic support |
| CN108756934A (en) * | 2018-06-01 | 2018-11-06 | 招商局重庆交通科研设计院有限公司 | Run disease tunnel assembled treatment structures construction operation trolley |
| CN108756934B (en) * | 2018-06-01 | 2023-10-20 | 招商局重庆交通科研设计院有限公司 | Operation disease tunnel assembly type treatment structure construction operation trolley |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170818 Termination date: 20180120 |