CN208803851U - A kind of compound CFRP restrained concrete arch of light-duty high-strength - Google Patents
A kind of compound CFRP restrained concrete arch of light-duty high-strength Download PDFInfo
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- CN208803851U CN208803851U CN201821449276.8U CN201821449276U CN208803851U CN 208803851 U CN208803851 U CN 208803851U CN 201821449276 U CN201821449276 U CN 201821449276U CN 208803851 U CN208803851 U CN 208803851U
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- carbon fiber
- snap ring
- compound
- tube
- sleeve
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Abstract
The utility model discloses a kind of compound CFRP restrained concrete arch of light-duty high-strength, structure is to assemble and be perfused the arch frame structure that core concrete is formed by connection sleeve and fixation steel plate by several compound carbon fiber confinement tubes.The compound carbon fiber confinement tube is made of inner tube, resin pickup carbon fiber interlayer and outer tube, is pasted between each layer by resin；The connection sleeve is divided into single barrier snap ring closure sleeve and double two kinds of snap ring perferated thimble of barriers, the barrier snap ring two sides of single barrier snap ring closure sleeve weld there are four circumferentially distributed fixed steel bars pawl, two outsides for obstructing snap rings of double barrier snap ring perferated thimbles weld there are four circumferentially distributed fixed steel bars pawl.The utility model can be used for roadway support, supporting intensity not only can be improved, but also greatly reduce arch overall weight, convenient for construction.
Description
Technical field
The utility model relates to the light-duty of mine timbering technical field more particularly to a kind of Deep Soft Rock Tunnel supporting
High strong supporting arch.
Background technique
In Deep Soft Rock Tunnel, bearing capacity of the wall rock is lower, has apparent rheological characteristic.If supporting intensity is insufficient,
The rheodestruction of country rock will sustainable development, tunnel is unable to maintain that steadily in the long term.Therefore it is given after surrouding rock deformation to a certain degree
Country rock apply the supporting construction with higher-strength be it is very crucial, it can effectively prevent the development of rheodestruction,
Guarantee that country rock is steady in a long-term.In this case, rigid protection of the confined concrete arch as a kind of high intensity, due to its structure
Simply, it is widely used in the supporting of Deep Soft Rock Tunnel.
The confined concrete arch applied in current major part mine and geotechnical engineering is mostly concrete filled steel tube arch and carbon
Fiber mold-bagged concrete arch, still, there is also following problems in practical applications for these confined concrete brackets.
Chinese invention patent CN201720406727.9 discloses a kind of concrete filled steel tube arch for roadway support, should
Arch is made of concrete-filled steel tube arch frame body and steel pipe, strength and stiffness with higher；But the arch frame structure is multiple
Miscellaneous, cost of manufacture is expensive, and erection difficulty is excessively high, and it is insufficient to be used for arch limit anti-bending strength when deep tunnel supporting.
Chinese utility model patent CN201520955522.7 is disclosed for a kind of novel coagulation of deep tunnel supporting
Native bracket, the arch are the flexible pipe body being processed and formed at one time by geotechnical fabric bag and carbon fiber, crossbeam clip, crossbeam and concrete
Composition；The arch have many advantages, such as can a form, flexible pipe body it is foldable and accelerate inner concrete speed, but
The carbon fiber layer for being the arch is sticked on the inside of geotechnical fabric bag, can be generated due to the broken of core concrete when arch destroys
The rubble of sharp crops for rotation is largely had, since the carbon fiber interlayer of liner directly contacts core concrete, and carbon fiber is as one
Kind of tension but the material of not shearing resistance, thus carbon fiber interlayer can due to rubble shear action and failure by shear occurs, while
During concrete perfusion, the direct contact of the carbon fiber layer of the concrete and liner of flowing can also be caused carbon fiber centainly
Damage, cause the tensile strength of carbon fiber layer also to will be greatly reduced, to be unable to give full play out the tension of carbon fibre material
Performance is eventually exhibited as arch Lack of support, is easy to appear phenomena such as arch destroys ahead of time.
In conclusion traditional confined concrete arch to the supporting effect and speed of application of Deep Soft Rock Tunnel not
Very ideal, therefore, exploratory development goes out a kind of arch high and easy to install suitable for the light weight of Deep Soft Rock Tunnel supporting, intensity
Supporting construction is very necessary.
Summary of the invention
The utility model is to solve the above problems, to propose a kind of light-duty high-strength suitable for Deep Soft Rock Tunnel supporting multiple
Close CFRP restrained concrete arch.The utility model has the advantages that light weight, intensity are high and easy to install, controls meeting us
While deformation of the surrounding rock in tunnel processed, be more reduction of underground construction personnel installed in narrow lane space arch labour it is strong
Degree, improves construction efficiency.
The construction of the compound CFRP restrained concrete arch of a kind of light-duty high-strength of the utility model are as follows: by several compound carbon fibers
Tie up confinement tube, connection sleeve and fixation steel plate, core concrete composition, which is characterized in that the compound carbon fiber confinement tube
It is made of inner tube, resin pickup carbon fiber interlayer and outer tube, resin pickup carbon fiber interlayer is between inner tube and outer tube；
The connection sleeve is divided into single barrier snap ring closure sleeve and double two kinds of snap ring perferated thimble of barriers, wherein single barrier snap ring closes
The a piece of barrier snap ring of sleeve weld is closed, double barrier snap ring perferated thimble welding two panels obstruct snap ring, and increase between two barrier snap rings
Apertured hole；The fixation steel plate is welded on connection sleeve side, and arch is anchored on the inner wall of tunnel.
It is described in order to protect carbon cloth by rubble failure by shear, not give full play of the tensile property of carbon fibre material
Compound each layer of carbon fiber confinement tube between pasted by resin, the inner tube and outer layer of resin pickup carbon fiber interlayer two sides
Rubble can be effectively reduced to the shear action of carbon cloth in pipe.
In order to improve connection sleeve bonding strength, the connection sleeve inner barrier snap ring two sides weld there are four ring
To the fixed steel bars pawl of distribution, reinforcing bar pawl can be inserted into concrete after the completion of concreting, to greatly improve connector sleeve
The bonding strength of cylinder.
In order to avoid directly spud in injected hole and gas vent on the tube body of compound carbon fiber confinement tube and caused by tube body
Strength reduction, it is double barrier snap ring perferated thimbles, injected hole and exhaust that the top connection sleeve, which connects sleeve with bottom,
Hole setting is between two barrier snap rings, to ensure that the integrality of tube body.
A kind of construction method of the compound CFRP restrained concrete arch of light-duty high-strength of the utility model are as follows: tube body production
When, carbon cloth is wrapped in the inner tube for being coated with resinoid bond, and be inserted in outer tube, then one end is immersed and is bonded
In resin, it is evacuated in other end gap so that the entire carbon cloth interlayer of resin infiltration, sufficiently solidifies to resin
The compound carbon fiber confinement tube is formed afterwards；When construction, several compound carbon fiber confinement tubes are led to according to cross-section shape of roadway
It crosses connection sleeve and is assembled into whole tube body, then tube body is anchored on the inner wall of tunnel by fixation steel plate, finally by bottom
Core concrete is perfused in the hole for connecting sleeve, forms arch supporting construction.
A kind of compound CFRP restrained concrete arch advantage of light-duty high-strength of the utility model is:
(1) the utility model can give full play to the extremely strong tensile property of carbon fibre material, and compound carbon fiber confinement tube is logical
It crosses and applies powerful restraining force to core concrete, so that core concrete is generated modification, and then greatly enhance the carrying of arch
Ability can satisfy the requirement of control Deep Soft Rock Tunnel surrouding rock deformation；
(2) the utility model is when carrying out supporting, using first set up tube body, it is rear carry out slip casting by the way of, due to arch outside
The constraint system in portion is far below steel pipe using resin pickup carbon fiber interlayer, weight are arranged between inner tube and outer tube
The steel pipe of concrete arch, the labour reduced when underground construction personnel carry in narrow lane space, install arch are strong
Degree, substantially increases construction efficiency；
(3) inner tube of the compound carbon fiber confinement tube of the utility model confined concrete arch and outer tube can be used as
The protective layer of resin pickup carbon fiber interlayer can play the role of protecting internal carbon fibers, so as to avoid concreting
Mix composition granule is to material damage caused by carbon fiber bundle in journey, or even removes, while can also be to avoid when arch installation pairs
The damage of resin pickup carbon fiber interlayer.This structure had both given full play to the excellent performance of carbon fiber, and it is anti-to also weaken carbon fiber
Cut the insufficient defect of performance；
(4) the connection sleeve is rigid sleeve, can resist larger moment of flexure, and internal reinforcing bar pawl can protrude into composite carbon
In core concrete in fiber confinement tube, axial bonding strength is substantially increased；Meanwhile top connection sleeve and the bottom of arch
Portion's connection sleeve is double barrier snap ring perferated thimbles, by injected hole and gas vent setting between two barrier snap rings, so as to
To avoid as the aperture directly on compound carbon fiber confinement tube tube body and caused by tube body strength reduction, ensure that the complete of tube body
Whole property.
(5) the compound carbon fiber confinement tube described in limits the transversely deforming of core concrete, improves its compression strength
And ductility, it avoids arch and brittle break occurs；
(6) for support cost, since its bearing capacity is powerful, the high expense that can repeatedly be repaired again to avoid supporting construction
With the overall support cost of the utility model is lower.
Detailed description of the invention
Fig. 1 is the compound carbon fiber confinement tube structural schematic diagram of the utility model.
Fig. 2 is the sectional view (not filling concrete) of the utility model.
Fig. 3 is to connect tube-in-tube structure detail drawing (double barrier snap ring perferated thimbles) at the top of the utility model.
Fig. 4 is that the utility model bottom connects tube-in-tube structure detail drawing (double barrier snap ring perferated thimbles).
Fig. 5 is that the utility model side wall connects tube-in-tube structure detail drawing (single barrier snap ring is closed sleeve).
Fig. 6 is the compound carbon fiber confinement tube transverse cross-sectional view (concrete perfusion) of the utility model.
Legend, 1- outer tube, 2- resin pickup carbon fiber interlayer, 3- inner tube, 4- connection sleeve, 5- fixed steel bars pawl, 6-
Barrier snap ring, 7- fixation steel plate, 8- connecting rod fixation hole, 9- sleeve anchor hole, the top 10- connection sleeve, 11- top vent,
The bottom 12- connects sleeve, the bottom 13- injected hole, the fixed connecting rod of 14-, 15- fixing bolt, 16- core concrete, 17- composite carbon
Fiber confinement tube.
Specific embodiment
A kind of compound CFRP restrained concrete arch of light-duty high-strength as shown in Figure 1 is by several compound carbon fiber confinement tubes
17, sleeve 4 and fixation steel plate 7 are connected, core concrete 16 forms, the compound carbon fiber confinement tube is by outer tube 1 and interior
Layer pipe 3 and resin pickup carbon fiber interlayer 2 form, and resin pickup carbon fiber interlayer 2 passes through between outer tube 1 and inner tube 3
Resin is pasted integral；The connection sleeve bosom be welded with barrier snap ring 6, barrier 6 two sides of snap ring weld there are four ring
To the fixed steel bars pawl 5 of distribution, and connect the intensity that sleeve semi-finals degree is higher than compound carbon fiber confinement tube 17；The fixation
Steel plate 7 is welded on connection 4 side of sleeve, and arch is anchored on the inner wall of tunnel.
Above-mentioned connection sleeve 4, which is divided to, is closed sleeve and double two kinds of snap ring perferated thimble of barriers for single barrier snap ring, wherein single
It obstructs snap ring and is closed a piece of barrier snap ring 6 of sleeve weld, the connection for the compound carbon fiber confinement tube of tunnel side wall；Double barrier cards
Ring perferated thimble welds two panels and obstructs snap ring 6, and adds hole between two barrier snap rings, for tunnel top, the compound carbon fiber in bottom
Tie up the connection of confinement tube 17.When double barrier snap ring perferated thimbles are used as top connection sleeve 10, hole is gas in drain
Gas vent 11；When connecting sleeve 12 as bottom, hole is the injected hole 13 that core concrete 16 is perfused.
When compound carbon fiber confinement tube makes, carbon cloth is wrapped in the inner tube for being coated with resinoid bond, to protect
It can be adequately filled up by carbon cloth between card inner tube and outer tube, need to be wound to adequate thickness, be then inserted in outer tube,
Gap between other end inner tube and outer tube is evacuated, and makes resin from bottom under the action of atmospheric pressure
Carbon cloth interlayer gradually diffuse up, until entire carbon cloth interlayer is infiltrated, after resin sufficiently solidify described in formation
Compound carbon fiber confinement tube 17.
When construction, according to cross-section shape of roadway by several compound carbon fiber confinement tubes 17 by connect sleeve 4 be assembled into it is whole
Then tube body is anchored on the inner wall of tunnel by body tube body by fixation steel plate 7, finally by the injected hole of bottom connection sleeve 12
13 perfusion core concretes 16 are managed interior gas and are excluded by the gas vent 11 that top connects sleeve 10, ultimately form arch supporting
Structure.
Claims (4)
1. a kind of compound CFRP restrained concrete arch of light-duty high-strength, it is by several compound carbon fiber confinement tubes, connector sleeve
Cylinder and fixation steel plate, core concrete composition, which is characterized in that the compound carbon fiber confinement tube is by inner tube, resin pickup
Carbon fiber interlayer and outer tube composition, resin pickup carbon fiber interlayer are pasted between inner tube and outer tube by resin
It is whole；The connection sleeve is divided into single barrier snap ring closure sleeve and double two kinds of snap ring perferated thimble of barriers, wherein the list
Obstruct snap ring and be closed a piece of barrier snap ring of sleeve weld, and the axial two sides of single barrier snap ring weld there are four it is circumferentially distributed
Fixed steel bars pawl, double barrier snap ring perferated thimbles welding two panels obstruct snap rings, and the outside two of double barrier snap rings
Face is welded there are four circumferentially distributed fixed steel bars pawl, and adds hole between two barrier snap rings.
2. a kind of compound CFRP restrained concrete arch of light-duty high-strength as described in claim 1, which is characterized in that the company
The internal diameter of female connector cylinder and the outer diameter of compound carbon fiber confinement tube are equal, and the leg of the reinforcing bar pawl with connect sleeve lining away from
It is equal from the thickness of compound carbon fiber confinement tube；The intensity of the connection sleeve is higher than the intensity of compound carbon fiber confinement tube.
3. a kind of compound CFRP restrained concrete arch of light-duty high-strength as described in claim 1, which is characterized in that described
When double barrier snap ring perferated thimbles are used as top connection sleeve, hole is for gas in drain；When connecting sleeve as bottom,
Hole is for being perfused core concrete.
4. a kind of compound CFRP restrained concrete arch of light-duty high-strength as described in claim 1, which is characterized in that described
Inner tube and outer tube are made of steel or intensity, rigidity not less than the other materials of steel, protect internal resin pickup carbon
Fibrous interlayer is not cut up by rock or broken concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821449276.8U CN208803851U (en) | 2018-09-05 | 2018-09-05 | A kind of compound CFRP restrained concrete arch of light-duty high-strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821449276.8U CN208803851U (en) | 2018-09-05 | 2018-09-05 | A kind of compound CFRP restrained concrete arch of light-duty high-strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208803851U true CN208803851U (en) | 2019-04-30 |
Family
ID=66235901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821449276.8U Expired - Fee Related CN208803851U (en) | 2018-09-05 | 2018-09-05 | A kind of compound CFRP restrained concrete arch of light-duty high-strength |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208803851U (en) |
-
2018
- 2018-09-05 CN CN201821449276.8U patent/CN208803851U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190430 Termination date: 20190905 |
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| CF01 | Termination of patent right due to non-payment of annual fee |