CN205840889U - A kind of major diameter soft rock tunnel three-dimensional space supporting construction - Google Patents
A kind of major diameter soft rock tunnel three-dimensional space supporting construction Download PDFInfo
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- CN205840889U CN205840889U CN201620809658.1U CN201620809658U CN205840889U CN 205840889 U CN205840889 U CN 205840889U CN 201620809658 U CN201620809658 U CN 201620809658U CN 205840889 U CN205840889 U CN 205840889U
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Abstract
This utility model provides a kind of major diameter soft rock tunnel three-dimensional space supporting construction, including the vertical support bracket suitable with tunnel wall shape and the curved face type support bracket suitable with tunnel top shape, described vertical support bracket and described curved face type support bracket are Double-level Reticulated shelly supporting construction, and described curved face type support bracket is disposed with anchor pole.Support system of the present utility model, it is adaptable to the supporting in major diameter soft rock tunnel three-dimensional space, it has given full play to reinforcing bar and the bearing capacity of concrete bi-material by means of space structure, has significantly provided the integer support intensity of structure.Further, this utility model between ectonexine net shell between add triangular supports, effectively reduce shell structure span, enhance stability in the large.
Description
Technical field
This utility model relates to the support technology field of soft rock tunnel.
Background technology
In underground engineering, the starting point of surrounding rock supporting is fully to maintain and play the self-bearing capacity of country rock, in engineering practice
Middle needs use measure targetedly according to the excavation response characteristic of country rock under different condition, are obtained by rational economic cost
Maintain the purpose of adjoining rock stability.
For the problem of this different mechanics feature of two classes of the heavily stressed destruction of country rock and country rock large deformation, according to load metamorphism and
The performance of the aspects such as reinforcement edge, supporting means can also be divided into rigid protection and flexible support.Rigid protection is more suitable for destroying
Having the situation of rigidity characteristic, flexible support is more suitable for needing to adapt to large deformation and the condition of impact failure.But, flexible
Measure of protecting is cost allowing while surrouding rock deformation the bearing capacity being to sacrifice country rock certain, and its advantage is that cost is relatively low；
If using rigid protection mode to realize, then may need more economic input.
The deformation failure of soft rock tunnel has own characteristic, and supporting construction only meets soft rock tunnel deformation-failure character,
Stablizing of soft rock tunnel could be safeguarded.The supporting construction ignoring soft rock tunnel deformation-failure character is not to be difficult to safeguard that tunnel is steady
Fixed, it is simply that cost is too high, is not the most the supporting construction of economical rationality.Failure is not the most in soft rock tunnel supporting for a lot of supporting construction
The intensity being because them is low, and often because their flexibility is the lowest or inadequate, can not accomplish that limit is propped up in Bracing Process
While allow, i.e. supporting construction is not suitable for the deformation-failure character of soft rock.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of major diameter soft rock tunnel three-dimensional space supporting construction,
Confined pressure can be provided timely and effectively, keep the intensity of country rock, there is again certain scalability, for soft rock convergent deformation simultaneously
Release space is provided, reduce the load that bears of supporting construction, it is ensured that the safety of support system.
This utility model solves technical problem and be the technical scheme is that a kind of major diameter soft rock tunnel three-dimensional space is propped up
Protection structure, including the vertical support bracket suitable with tunnel wall shape and the curved face type supporting suitable with tunnel top shape
Frame, described vertical support bracket and described curved face type support bracket are Double-level Reticulated shelly supporting construction, on described curved face type support bracket
It is disposed with anchor pole.
While using technique scheme, this utility model can also use or combine employing further below
Technical scheme:
Described supporting construction is fixed by the hole wall of latch with described soft rock tunnel.
Described Double-level Reticulated shelly supporting construction includes outer layer skeleton reinforcing steel bar and inner framework reinforcing bar, described outer layer skeleton reinforcing steel bar
And it is provided with triangular supports between described inner framework reinforcing bar.
Described outer layer skeleton reinforcing steel bar and described inner framework reinforcing bar are bar-mat reinforcement, and described triangular supports is connected to
On the mesh point of inside and outside two-layer skeleton reinforcing steel bar.
Described triangular supports includes the telescoping shoring column bar with certain angle of inclination, the two of described telescoping shoring column bar
End is connected on the mesh point of ectonexine skeleton reinforcing steel bar, forms telescopic triangular supports.
It is provided with filling steel fiber reinforced concrete between described outer layer skeleton reinforcing steel bar and inner framework reinforcing bar.
The beneficial effects of the utility model are: support system of the present utility model, it is adaptable to major diameter (more than 10m) soft rock
The supporting in tunnel three-dimensional space, it has given full play to reinforcing bar and the bearing capacity of concrete bi-material by means of space structure,
Significantly provide the integer support intensity of structure.Further, triangle is added between this utility model is between ectonexine net shell
Support, effectively reduces shell structure span, enhances stability in the large.In order to tackle soft rock large deformation, at ectonexine net shell
Between arrange scalable crane span structure, between the latticed shell structure of different parts, arrange latch, form flexible support system.
Of the present utility model protective function is reliable, and construction technology is simple, and construction technology is prone to grasp, and improves engineering construction
Progress, it is not necessary to spend bigger man power and material to go maintenance, advantageously reduce cost and reduce investment outlay.
Accompanying drawing explanation
Fig. 1 is elevation of the present utility model.
Fig. 2 is the expanded view of Double-level Reticulated shelly supporting construction of the present utility model.
Detailed description of the invention
Referring to the drawings.
Supporting construction of the present utility model include the vertical support bracket 1 suitable with tunnel wall shape and with tunnel top
The curved face type support bracket 2 that shape is suitable, described vertical support bracket 1 and described curved face type support bracket 2 are Double-level Reticulated shelly and prop up
Protection structure, described curved face type support bracket 2 is disposed with anchor pole 3, and anchor pole 3 is fixed on curved face type support bracket 2 by anchor plate 4,
And can be anchored at soft along the hole rimrock body of tunnel.
Described supporting construction is fixed by the hole wall of latch 5 with described soft rock tunnel.
Described Double-level Reticulated shelly supporting construction includes outer layer skeleton reinforcing steel bar 6 and inner framework reinforcing bar 7, described outer layer skeleton steel
It is provided with triangular supports 8 between muscle 6 and described inner framework reinforcing bar 7.
Described outer layer skeleton reinforcing steel bar 6 and described inner framework reinforcing bar 7 are bar-mat reinforcement, and described triangular supports 8 connects respectively
It is connected on the mesh point of inside and outside two-layer skeleton reinforcing steel bar.
Described triangular supports 8 includes the scalable crane span structure with certain angle of inclination, the two ends of described scalable crane span structure
It is connected on the mesh point of ectonexine skeleton reinforcing steel bar, forms telescopic triangular supports.
Being provided with filling steel fiber reinforced concrete 9 between described outer layer skeleton reinforcing steel bar 6 and inner framework reinforcing bar 7, anchor plate 4 pours
In steel fiber reinforced concrete 9.
Each several part feature of the present utility model is as follows:
(1) frame structure is mainly type arched by skeleton reinforcing steel bar, installs bar-mat reinforcement, and be divided into inside and outside in skeleton reinforcing steel bar
Two-layer, middle forms the double-deck hyperbolic net shelly supporting construction in a kind of space with the connection of scalable crane span structure, make inside and outside net shell
Structure has the ability of good scalability and adaptive deformation, and this architectural feature can give full play to space three-dimensional stability
Feature.
(2) arrange ordinary mortar anchor pole at steel bar mesh shell construction interior, and utilize anchor plate to combine as a whole with latticed shell structure,
Utilize the resistance to tension of anchor pole, improve the supporting intensity of structure further, it is ensured that the stability in the large of structure.Steel is sprayed at outer layer
Fiber concrete, utilizes the advantages such as steel fiber reinforced concrete tension, comprcssive strength height, good toughness, impermeability are strong, closes country rock, keep away
Exempt from soft rock and meet water softening, provide certain confined pressure for country rock again, it is provided that the bearing capacity of country rock self simultaneously.
(3) the telescoping shoring column triangularity set up between skeleton reinforcing steel bar is arranged, forms numerous little span structure, reduces bone
The span of frame reinforcing bar, improves the stability in the large of structure.Meanwhile, support has three-dimensional stability, it is possible to being subject to outer reinforcement
Power is disperseed, and outside stress is passed to internal layer reinforcing bar and concrete spray coating, gives full play to the bearing capacity of structure various piece.
(4) when tunnel footpath is bigger, the latticed shell structure of different parts can be assembled apart, and utilize latch to be attached,
Be not only advantageous to transport and the assembly of structure, it is also possible to tackle soft rock large deformation time, adjust different piece support length and
Elasticity, improves overall flexibility and the ability of adaptive deformation of supporting construction.
Claims (6)
1. a major diameter soft rock tunnel three-dimensional space supporting construction, it is characterised in that: described supporting construction includes and tunnel
Vertical support bracket that wall shape is suitable and the curved face type support bracket suitable with tunnel top shape, described vertical support bracket and
Described curved face type support bracket is Double-level Reticulated shelly supporting construction, and described curved face type support bracket is disposed with anchor pole.
A kind of major diameter soft rock tunnel three-dimensional space the most according to claim 1 supporting construction, it is characterised in that: described
Protection structure is fixed by the hole wall of latch with described soft rock tunnel.
A kind of major diameter soft rock tunnel three-dimensional space the most according to claim 1 supporting construction, it is characterised in that: described double
Layer net shelly supporting construction includes outer layer skeleton reinforcing steel bar and inner framework reinforcing bar, described outer layer skeleton reinforcing steel bar and described inner framework
Triangular supports it is provided with between reinforcing bar.
A kind of major diameter soft rock tunnel three-dimensional space the most according to claim 3 supporting construction, it is characterised in that: outside described
Layer skeleton reinforcing steel bar and described inner framework reinforcing bar are bar-mat reinforcement, and described triangular supports is connected to inside and outside two-layer skeleton steel
On the mesh point of muscle.
A kind of major diameter soft rock tunnel three-dimensional space the most according to claim 4 supporting construction, it is characterised in that: described three
Angular support frame includes the scalable crane span structure with certain angle of inclination, and the two ends of described scalable crane span structure are connected to ectonexine
On the mesh point of skeleton reinforcing steel bar, form telescopic triangular supports.
A kind of major diameter soft rock tunnel three-dimensional space the most according to claim 3 supporting construction, it is characterised in that: outside described
It is provided with filling steel fiber reinforced concrete between layer skeleton reinforcing steel bar and inner framework reinforcing bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620809658.1U CN205840889U (en) | 2016-07-29 | 2016-07-29 | A kind of major diameter soft rock tunnel three-dimensional space supporting construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620809658.1U CN205840889U (en) | 2016-07-29 | 2016-07-29 | A kind of major diameter soft rock tunnel three-dimensional space supporting construction |
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| Publication Number | Publication Date |
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| CN205840889U true CN205840889U (en) | 2016-12-28 |
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| CN201620809658.1U Active CN205840889U (en) | 2016-07-29 | 2016-07-29 | A kind of major diameter soft rock tunnel three-dimensional space supporting construction |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869971A (en) * | 2017-04-11 | 2017-06-20 | 湖南科技大学 | A kind of deep-well head of the horse door gear and application method with deformation measurement function |
| CN110017150A (en) * | 2019-05-05 | 2019-07-16 | 西南交通大学 | Space networks shell-type shotcrete preliminary bracing structure, tunnel and tunnel support construction method |
-
2016
- 2016-07-29 CN CN201620809658.1U patent/CN205840889U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869971A (en) * | 2017-04-11 | 2017-06-20 | 湖南科技大学 | A kind of deep-well head of the horse door gear and application method with deformation measurement function |
| CN106869971B (en) * | 2017-04-11 | 2023-03-28 | 湖南科技大学 | Deep well ingate device with deformation measurement function and use method |
| CN110017150A (en) * | 2019-05-05 | 2019-07-16 | 西南交通大学 | Space networks shell-type shotcrete preliminary bracing structure, tunnel and tunnel support construction method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |