CN206439059U - It is a kind of to be used for the energy dissipating supporting construction in tunnel under large deformation wall rock condition - Google Patents
It is a kind of to be used for the energy dissipating supporting construction in tunnel under large deformation wall rock condition Download PDFInfo
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- CN206439059U CN206439059U CN201720022522.0U CN201720022522U CN206439059U CN 206439059 U CN206439059 U CN 206439059U CN 201720022522 U CN201720022522 U CN 201720022522U CN 206439059 U CN206439059 U CN 206439059U
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- steel arch
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Abstract
The utility model is related to a kind of energy dissipating supporting construction for tunnel under large deformation wall rock condition.To be usually expressed as rock deformation big in tunnel under large deformation wall rock condition, the security incident such as easily cave in.The utility model includes being provided with compression damper between the steel arch-shelf in tunnel excavation contour line, the section of steel arch-shelf；Tunnel surrounding inner circumference is provided with multiple tension anchor poles, and tension anchor pole end is fixed on the edge of a wing of steel arch-shelf by tension damper.Easily it is deformed in steel arch-shelf, under faulting of slab ends, the rough sledding such as distortion, pass through the collective effect of the tension anchor pole in the utility model, compression damper and tension damper and steel arch-shelf, the initial stage discharged in pressure from surrounding rock, reach the effect shouldered when putting, the effect for reaching increase steel arch-shelf stiffness by itself afterwards to a certain extent is discharged in pressure from surrounding rock, ensure tunnel safety, and meet Clearance requirement.
Description
Technical field
The utility model belongs to tunnel traffic field of engineering technology, and in particular to one kind is used for tunnel under large deformation wall rock condition
The energy dissipating supporting construction in road.
Background technology
There are a large amount of Concerning Railway Tunnel Construction projects in China, and the design and construction problem in tunnel is stranded wherein under large deformation wall rock condition
Disturb vast tunnel construction person, it is big that these tunnels are usually expressed as rock deformation, the security incident such as easily cave in；Change
Design is more, and investment is difficult to control to；Construction speed is slow, duration of serious engineering constraint etc..
Correct support idea is selected, country rock self-strength is made full use of, safety, economic supporting effect can be reached.
Tunnel supporting method can substantially be divided into rigid protection, flexible support, rigid flexible system supporting etc..For under large deformation wall rock condition
Tunnel support, it is hard to work that reinforcement rigidity is pursued simply, first soft rear firm, first allows and resist afterwards, the soft appropriateness, stable of allowing
Shield.Rigid flexible system is preferably used to tunnel support under large deformation wall rock condition, early stage is put, pressure from surrounding rock is discharged, to mitigate supporting knot
Load on structure；Later stage resists, and after country rock produces certain deformation, the pressure of country rock is resisted with the supporting construction of big rigidity, it is ensured that
Tunnel safety, and meet Clearance requirement.
The content of the invention
The purpose of this utility model is to provide a kind of energy dissipating supporting construction for tunnel under large deformation wall rock condition, it is to avoid
Because tunnel deformation amount causes greatly preliminary bracing（Steel arch-shelf）Deformation, faulting of slab ends, distortion, so that occurring cave-in accident etc., are improved
Security during tunnel construction.
The technical scheme that the utility model is used for：
It is a kind of to be used for the energy dissipating supporting construction in tunnel under large deformation wall rock condition, including the steel arch in tunnel excavation contour line
Frame, it is characterised in that：
Compression damper is provided between the section of steel arch-shelf；
Tunnel surrounding inner circumference is provided with multiple tension anchor poles, and steel arch is fixed in tension anchor pole end by tension damper
The edge of a wing of frame.
Compression damper two ends end is mutually fixed by backing plate and bolt with adjacent steel arch-shelf section.
Tension anchor pole end is mutually fixed by backing plate and bolt with tension damper one end, and the tension damper other end passes through
Backing plate and bolt are mutually fixed with the steel arch-shelf edge of a wing.
The utility model has advantages below：
First, the initial stage after the completion of preliminary bracing, the constraint by anchor pole and tension damper to steel arch-shelf makes it become greatly
The effect put when shouldering is reached under the conditions of shape to surrouding rock deformation.
2nd, in the evolution of surrouding rock deformation, steel arch-shelf compatible deformation is enable by compression damper, it is ensured that steel arch-shelf is certainly
Body is not deformed, faulting of slab ends, distortion etc., preliminary bracing agent structure is not destroyed, it is to avoid preliminary bracing is changed.
3rd, when surrouding rock deformation reaches design load, tension damper and compression damper will provide steel arch-shelf constraint, improve
The integral rigidity of steel arch-shelf and the resistance to overturning of preliminary bracing, it is ensured that tunnel safety, and meet Clearance requirement.
Brief description of the drawings
Fig. 1 is the sectional drawing of preliminary bracing.
Fig. 2 is the A portions original state drawing in Fig. 1.
Fig. 3 is the A portions stable state drawing in Fig. 1.
Fig. 4 is the B portions original state drawing in Fig. 1.
Fig. 5 is the B portions stable state drawing in Fig. 1.
In figure, 1- tunnel excavation contour lines, 2- steel arch-shelf original state center lines, 3- steel arch-shelf stable state center lines,
4- tunnels center line, 5- tension anchor poles, 6- compression dampers, 7- tension dampers, 8- secondary lining armored concrete, 9- steel arches
Frame, 10- bolts, 11- backing plates.
Embodiment
The utility model is described in detail with reference to embodiment.
A kind of energy dissipating supporting construction for tunnel under large deformation wall rock condition that the utility model is related to, including tunnel are opened
The steel arch-shelf 9 dug in contour line, the inner side of steel arch-shelf 9 paving applies secondary lining armored concrete 8.Set between the section of steel arch-shelf 9
There is compression damper 6.Tunnel surrounding inner circumference is provided with multiple tension anchor poles 5, and the end of tension anchor pole 5 passes through tension damper 7
It is fixed on the edge of a wing of steel arch-shelf 9.The quantity of each part is integrated by tunnel excavation area, digging mode and stressing conditions and determined, steel
The length of bow member 9 is determined by excavation line.
The two ends end of compression damper 6 is mutually fixed by backing plate 11 and bolt 10 with the adjacent section of steel arch-shelf 9, it is ensured that be pressurized
Damper 6 and the common stress of steel arch-shelf 9.The end of tension anchor pole 5 is mutually solid by backing plate 11 and bolt 10 and the one end of tension damper 7
Fixed, the other end of tension damper 7 is mutually fixed by backing plate 11 and bolt 10 with the edge of a wing of steel arch-shelf 9, it is ensured that tension anchor pole 5, tension
Damper 7 and the common stress of steel arch-shelf 9.
Work progress is as follows：
The construction tension anchor pole 5 in the inner side of tunnel excavation contour line 1, the plasticity of tunnel deformation is goed deep into length 3-10m, free end
Area, termination is connected with tension damper 7 by backing plate 11 and bolt 10, and the initial length of tension damper 7 is L1.
After the completion of tension anchor pole 5 and tension damper 7 are constructed, constructed steel arch-shelf along steel arch-shelf original state center line 2, by
Draw the other end of damper 7 to be connected with the edge of a wing of steel arch-shelf 9 by backing plate 11 and bolt 10, backing plate is passed through between the steel arch-shelf 9 of segmentation
11 and bolt 10 connected with compression damper 6, the initial length of compression damper 6 is Y1.
In the presence of pressure from surrounding rock, the initial length of tension damper 7 is L1, is gradually elongated, compression damper 6 is initial
Length is Y1, is gradually pressed short, on the one hand provides drag to country rock, further plays the anchorage effect of tension anchor pole 5, the opposing party
Face ensures under the premise of the harmony and integrality of steel arch-shelf 9, makes steel arch-shelf 9 to contraction on the inside of tunnel, further to discharge country rock
Pressure.
With the gradually release of pressure from surrounding rock, tension damper 7 is gradually elongated, at the same time, and compression damper 6 is gradually
It is short by pressing.Because tension damper 7 is gradually elongated, the anchor force of tension anchor pole 5 is further played, has been reached to pressure from surrounding rock
The effect put when shouldering；Compression damper 6 gradually by press it is short, it is ensured that steel arch-shelf under conditions of pressure from surrounding rock gradually discharges,
Overall rigidity, harmony and integrality, it is to avoid deformation, faulting of slab ends, distortion etc. occurs in steel arch-shelf, has also reached to pressure from surrounding rock
The effect put when shouldering.
Pressure from surrounding rock continues to discharge, and tension damper 7 continues to be elongated, and L2, compression damper 6 are changed into from initial length L1
Continue to be pressed short, Y2 is changed into from initial length Y1, now, the center line of steel arch-shelf 9 is changed into from steel arch-shelf original state center line 2
The stable state center line 3 of steel arch-shelf 9, tension damper 7 can not be elongated again, and compression damper 6 can not be pressed short, both of which again
It is changed into being rigidly connected, pressure from surrounding rock is cooperatively resisted with tension anchor pole 5 and steel arch-shelf 9.After the completion of waterproof and drain measure construction,
Finally construction secondary lining armored concrete ensures tunnel safety, and meets Clearance requirement.
Content of the present utility model is not limited to cited by embodiment, and those of ordinary skill in the art are new by reading this practicality
Type specification and any equivalent conversion taken technical solutions of the utility model, are claim institute of the present utility model
Cover.
Claims (3)
1. a kind of be used for the energy dissipating supporting construction in tunnel under large deformation wall rock condition, including the steel arch-shelf in tunnel excavation contour line
（9）, it is characterised in that：
Steel arch-shelf（9）Section between be provided with compression damper（6）；
Tunnel surrounding inner circumference is provided with multiple tension anchor poles（5）, tension anchor pole（5）End passes through tension damper（7）It is fixed
In steel arch-shelf（9）The edge of a wing.
2. a kind of energy dissipating supporting construction for tunnel under large deformation wall rock condition according to claim 1, its feature exists
In：
Compression damper（6）Two ends end passes through backing plate（11）And bolt（10）With adjacent steel arch-shelf（9）Section is mutually fixed.
3. a kind of energy dissipating supporting construction for tunnel under large deformation wall rock condition according to claim 1, its feature exists
In：
Tension anchor pole（5）End passes through backing plate（11）And bolt（10）With tension damper（7）One end is mutually fixed, tension damper
（7）The other end passes through backing plate（11）And bolt（10）With steel arch-shelf（9）The edge of a wing is mutually fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720022522.0U CN206439059U (en) | 2017-01-10 | 2017-01-10 | It is a kind of to be used for the energy dissipating supporting construction in tunnel under large deformation wall rock condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720022522.0U CN206439059U (en) | 2017-01-10 | 2017-01-10 | It is a kind of to be used for the energy dissipating supporting construction in tunnel under large deformation wall rock condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206439059U true CN206439059U (en) | 2017-08-25 |
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ID=59642790
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720022522.0U Active CN206439059U (en) | 2017-01-10 | 2017-01-10 | It is a kind of to be used for the energy dissipating supporting construction in tunnel under large deformation wall rock condition |
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| Country | Link |
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| CN (1) | CN206439059U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703840A (en) * | 2017-01-10 | 2017-05-24 | 中铁第勘察设计院集团有限公司 | Energy-dissipation support structure for tunnel under large-deformation surrounding rock condition |
| CN107795326A (en) * | 2017-10-24 | 2018-03-13 | 仇文革 | The construction method of damper and tunnel support structure |
| CN107816360A (en) * | 2017-10-24 | 2018-03-20 | 仇文革 | Utilize the big stroke rod-type damper of performance behind material peak |
| CN108979677A (en) * | 2018-09-29 | 2018-12-11 | 中铁二院昆明勘察设计研究院有限责任公司 | Spray based on friction energy-dissipating stringer is mixed-and steelframe integrally allows change just branch structure and construction method |
| CN114562294A (en) * | 2022-03-29 | 2022-05-31 | 成都理工大学 | Tunnel lets pressure to strut restriction energy-absorbing controller that hinders |
-
2017
- 2017-01-10 CN CN201720022522.0U patent/CN206439059U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703840A (en) * | 2017-01-10 | 2017-05-24 | 中铁第勘察设计院集团有限公司 | Energy-dissipation support structure for tunnel under large-deformation surrounding rock condition |
| CN107795326A (en) * | 2017-10-24 | 2018-03-13 | 仇文革 | The construction method of damper and tunnel support structure |
| CN107816360A (en) * | 2017-10-24 | 2018-03-20 | 仇文革 | Utilize the big stroke rod-type damper of performance behind material peak |
| CN107795326B (en) * | 2017-10-24 | 2020-10-13 | 仇文革 | Construction method of tunnel supporting structure of damper |
| CN108979677A (en) * | 2018-09-29 | 2018-12-11 | 中铁二院昆明勘察设计研究院有限责任公司 | Spray based on friction energy-dissipating stringer is mixed-and steelframe integrally allows change just branch structure and construction method |
| CN108979677B (en) * | 2018-09-29 | 2023-05-23 | 中铁二院昆明勘察设计研究院有限责任公司 | Spout-steel frame integral yielding primary support structure based on friction energy dissipation longitudinal beam and construction method |
| CN114562294A (en) * | 2022-03-29 | 2022-05-31 | 成都理工大学 | Tunnel lets pressure to strut restriction energy-absorbing controller that hinders |
| CN114562294B (en) * | 2022-03-29 | 2023-03-10 | 成都理工大学 | Tunnel lets pressure to strut restriction energy-absorbing controller that hinders |
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