CN215672290U - Novel combined hollow anchor rod for tunnel primary support - Google Patents
Novel combined hollow anchor rod for tunnel primary support Download PDFInfo
- Publication number
- CN215672290U CN215672290U CN202122105736.3U CN202122105736U CN215672290U CN 215672290 U CN215672290 U CN 215672290U CN 202122105736 U CN202122105736 U CN 202122105736U CN 215672290 U CN215672290 U CN 215672290U
- Authority
- CN
- China
- Prior art keywords
- anchor rod
- hollow
- tunnel
- exhaust pipe
- pipe
- 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.)
- Expired - Fee Related
Links
- 239000004918 carbon fiber reinforced polymer Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000004873 anchoring Methods 0.000 claims abstract description 9
- 239000011440 grout Substances 0.000 claims description 23
- 102100040287 GTP cyclohydrolase 1 feedback regulatory protein Human genes 0.000 claims description 5
- 101710185324 GTP cyclohydrolase 1 feedback regulatory protein Proteins 0.000 claims description 5
- 101710107464 Probable pyruvate, phosphate dikinase regulatory protein, chloroplastic Proteins 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 238000005488 sandblasting Methods 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 4
- -1 polypropylene Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 239000004636 vulcanized rubber Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 13
- 239000010959 steel Substances 0.000 abstract description 13
- 238000010276 construction Methods 0.000 abstract description 9
- 239000004570 mortar (masonry) Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000003822 epoxy resin Substances 0.000 abstract description 4
- 229920000647 polyepoxide Polymers 0.000 abstract description 4
- 229920000049 Carbon (fiber) Polymers 0.000 abstract description 3
- 239000004917 carbon fiber Substances 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 239000011435 rock Substances 0.000 description 8
- 238000009434 installation Methods 0.000 description 6
- 239000004567 concrete Substances 0.000 description 5
- 239000002002 slurry Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000011378 shotcrete Substances 0.000 description 2
- 229920002748 Basalt fiber Polymers 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011208 reinforced composite material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a novel combined hollow anchor rod for primary tunnel support, which comprises an anchor rod main body: the bottom cover on stock main part surface is equipped with the anchor end, the bottom welding of anchor end has the cavity screwed pipe of cup jointing in the stock main part, the surface of cavity screwed pipe is provided with the backing plate, the fixed surface of cavity screwed pipe installs the nut that is located the backing plate below, the surface movable mounting of cavity screwed pipe has the thick liquid stopper that ends that is located the backing plate top. In the utility model, when in actual use, the CFRP combined hollow anchor rod takes the carbon fiber bar as a main body, the hollow steel pipe assists in completing grouting, and epoxy resin mortar or common mortar is injected to complete the novel anchoring material for primary support, so that the CFRP combined hollow anchor rod is suitable for the tunnel with poor geological conditions, the long-term stability of the tunnel is improved, the durability is good, the safety and reliability are high, the construction arrangement is simple and convenient, and the safety and civilization effect of a construction site is effectively improved.
Description
Technical Field
The utility model belongs to the technical field of tunnel construction, and particularly relates to a novel combined hollow anchor rod for primary tunnel support.
Background
The primary support of the tunnel refers to the work of redistributing the stress of surrounding rocks within a certain range and releasing the residual stress of local earth crust after the tunnel is excavated, so as to control the stress of the surrounding rocks to be properly released and deformed, increase the structural safety and facilitate construction.
With the increase of economic development and social demand, tunnel engineering is gradually increased, a combined hollow anchor rod taking hot-rolled ribbed steel bars as a main body is usually adopted for tunnel arch support at the present stage, and when the geological conditions of a tunnel are poor, the problem of the durability of the anchor rod taking the steel bars as the main body is more serious, so that the long-term stability of the tunnel is not good.
After the reinforcing bar stock is corroded, the surrounding rock pressure that originally born by the stock changes and is born by surrounding rock, shotcrete and lining concrete, causes local concrete fracture easily, falls the piece even, and serious still can influence tunnel operation.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a novel combined hollow anchor rod for primary tunnel support, which has the advantages of good durability, high safety and reliability, simple and convenient construction arrangement and effective improvement of the safety and civilization effect of a construction site, and solves the problems that the durability problem of the anchor rod taking a steel bar as a main body is more serious, the anchor rod is not stable and harmful to a tunnel for a long time, and after the steel bar anchor rod is corroded, the pressure of surrounding rock born by the anchor rod is converted into the pressure born by surrounding rock, sprayed concrete and lining concrete, so that local concrete cracks and even blocks fall easily, and the operation of the tunnel is seriously influenced.
The technical scheme for solving the technical problems is as follows: a novel combination cavity stock for tunnel preliminary bracing, includes the stock main part: the bottom cover on stock main part surface is equipped with the anchor end, the bottom welding of anchor end has the cavity screwed pipe of cup jointing in the stock main part, the surface of cavity screwed pipe is provided with the backing plate, the fixed surface of cavity screwed pipe installs the nut that is located the backing plate below, the movable surface mounting of cavity screwed pipe has the grout stop stopper that is located the backing plate top, grout outlet has been seted up at the top on cavity screwed pipe surface, the bottom of stock main part stretches into the bottom of cavity screwed pipe, the bottom on cavity screwed pipe surface is provided with the end cap that is located cavity screwed pipe below, the top of stock main part is provided with the pole head anchor, one side intercommunication on cavity screwed pipe surface has the blast pipe, the surface of stock main part is provided with a support frame.
The utility model relates to a novel combined hollow anchor rod for primary tunnel support, which further comprises: the exhaust pipe is a hollow pipe made of soft plastic materials such as polypropylene and the like.
The utility model relates to a novel combined hollow anchor rod for primary tunnel support, which further comprises: the grout stopping plug is a rubber plug made of vulcanized rubber materials.
The utility model relates to a novel combined hollow anchor rod for primary tunnel support, which further comprises: the aperture of the grout stopping plug is not less than sixteen millimeters, and the number of the grout outlets is not less than two.
The utility model relates to a novel combined hollow anchor rod for primary tunnel support, which further comprises: the anchor rod main body (1) is a CFRP ribbed sand blasting rib, a BFRP rib and a GFRP rib.
The utility model relates to a novel combined hollow anchor rod for primary tunnel support, which further comprises: the surface of the anchor rod main body is sleeved with two exhaust pipe clamps, the exhaust pipe is fixedly installed on the anchor rod main body through the exhaust pipe clamp, and the exhaust pipe clamps are clamped at the concave part of the surface of the exhaust pipe.
The utility model relates to a novel combined hollow anchor rod for primary tunnel support, which further comprises: the support frame comprises a first mounting ring and a second mounting ring which are fixedly connected to the anchor rod main body, wherein an external connecting ring is arranged on the outer side of the first mounting ring, the first mounting ring and the external connecting ring are welded together through three connecting short rods, and the external connecting ring and the second mounting ring are welded together through three connecting long rods.
The utility model has the beneficial effects that:
1. in the utility model, when in actual use, the CFRP combined hollow anchor rod takes the carbon fiber bar as a main body, the hollow steel pipe assists in completing grouting, and epoxy resin mortar or common mortar is injected to complete the novel anchoring material for primary support, so that the CFRP combined hollow anchor rod is suitable for the tunnel with poor geological conditions, the long-term stability of the tunnel is improved, the durability is good, the safety and reliability are high, the construction arrangement is simple and convenient, and the safety and civilization effect of a construction site is effectively improved.
Drawings
The above and/or other advantages of the utility model will become more apparent and more readily appreciated from the following detailed description taken in conjunction with the accompanying drawings, which are given by way of illustration only and not by way of limitation, and in which:
FIG. 1 is a schematic diagram of one embodiment of the present invention;
FIG. 2 is a partial perspective view of one embodiment of the present invention;
figure 3 is a schematic view of a three-dimensional support structure according to an embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the anchor rod comprises an anchor rod main body, 2, an anchor end, 3, a hollow threaded pipe, 4, a backing plate, 5, a nut, 6, a grout stop plug, 7, a grout outlet, 8, a plug, 9, a support frame, 10, an exhaust pipe, 11, an exhaust pipe clamp, 12, an anchor rod head, 91, a first mounting ring, 92, an external connecting ring, 93, a connecting short rod, 94, a second mounting ring, 95 and a connecting long rod.
Detailed Description
Hereinafter, an embodiment of the novel combined hollow anchor rod for preliminary tunnel support according to the present invention will be described with reference to the accompanying drawings.
The examples described herein are specific embodiments of the present invention, are intended to be illustrative and exemplary in nature, and are not to be construed as limiting the scope of the utility model. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.
The drawings in the present specification are schematic views to assist in explaining the concept of the present invention, and schematically show the shapes of respective portions and their mutual relationships. It is noted that the drawings are not necessarily to the same scale so as to clearly illustrate the structures of the various elements of the embodiments of the utility model. Like reference numerals are used to denote like parts.
Fig. 1 to 3 show a novel combined hollow anchor rod for tunnel preliminary bracing according to an embodiment of the utility model, which comprises an anchor rod main body 1: the anchor rod comprises an anchor rod body 1, wherein an anchor end 2 is sleeved at the bottom of the surface of the anchor rod body 1, a hollow threaded pipe 3 sleeved on the anchor rod body 1 is welded at the bottom end of the anchor end 2, a backing plate 4 is arranged on the surface of the hollow threaded pipe 3, a nut 5 positioned below the backing plate 4 is fixedly arranged on the surface of the hollow threaded pipe 3, a grout stop plug 6 positioned above the backing plate 4 is movably arranged on the surface of the hollow threaded pipe 3, a grout outlet 7 is formed in the top of the surface of the hollow threaded pipe 3, the bottom end of the anchor rod body 1 extends into the bottom of the hollow threaded pipe 3, a plug 8 positioned below the hollow threaded pipe 3 is arranged at the bottom of the surface of the hollow threaded pipe 3, an anchor rod head 12 is arranged at the top end of the anchor rod body 1, an exhaust pipe 10 is communicated with one side of the surface of the hollow threaded pipe 3, a support 9 is arranged on the surface of the anchor rod body 1, and the exhaust pipe 10 is a hollow pipe made of soft plastics such as polypropylene, the grout stop plug 6 is a rubber plug made of vulcanized rubber materials, the aperture of the grout stop plug 6 is not less than sixteen millimeters, the number of grout outlets 7 is not less than two, the anchor rod body 1 is a CFRP ribbed sand blasting rib, the diameter phi 6-phi 12 is not equal, a BFRP rib and a GFRP rib can be used for replacement, two exhaust pipe clamps 11 are sleeved on the surface of the anchor rod body 1, the exhaust pipe 10 is fixedly installed on the anchor rod body 1 through the exhaust pipe clamps 11, the exhaust pipe clamps 11 are hooped on the concave part of the surface of the exhaust pipe 10, the support frame 9 comprises a first installation ring 91 and a second installation ring 94 which are fixedly connected on the anchor rod body 1, an external connection ring 92 is arranged on the outer side of the first installation ring 91, the first installation ring 91 and the external connection ring 92 are welded together through three short connecting rods 93, and the external connection ring 92 and the second installation ring 94 are welded together through three long connecting rods 95.
The anchor rod is processed as follows:
centralized processing in a factory.
1. The anchor rod head 12 is made of Q235 steel, is 15cm long, slightly larger than the diameter of the anchor rod in width, is internally provided with 3 connecting rings and can be sleeved on the CFRP rod body; the purpose reduces the body of rod wearing and tearing, keeps the body of rod between two parties.
2. The exhaust pipe clamp 11 is made of plastic materials, and the exhaust pipe is fixed on the anchor rod body, so that the transportation and installation are facilitated.
3. The exhaust pipe 10 is made of soft plastics such as polypropylene, is used as an exhaust passage of internal gas during grouting, and has an inner diameter not less than 6 mm.
4. And the anchoring end head 2 is a Q235 thin-wall steel tube and is used for anchoring a CFRP rib, the anchoring end head is inverted on the CFRP rib during anchoring, the bottom of the CFRP rib is blocked, the rod body is centered by using an auxiliary device, a cementing material is poured until the position of 2cm below a grout outlet, and the CFRP rib can leave a factory after standing for 48 hours at normal temperature.
5. And the grout outlet 7 is provided with at least 2 holes on the hollow anchor rod body, and the inner diameter of the holes is not less than 16 mm.
6. The grout stop plug 6 is made of vulcanized rubber materials and is plugged into the hole before grouting, so that the grout is blocked and prevented from flowing out.
7. The backing plate 4 is made of Q235 steel, so that the fixation of the slurry stop plug is strengthened, and the overflow of redundant slurry is prevented.
8. And the plug 8 is made of rubber material and is used for plugging the port after grouting is finished so as to prevent slurry from overflowing.
9. The nut 5 and the Q235 steel are matched with the base plate, and are used for fastening the base plate and enhancing the plugging effect.
10. The hollow threaded steel pipe 3 and the Q235 steel are connected with the anchoring end in a butt welding mode, a hole grout outlet is reserved in the upper portion, and threads are turned on the lower portion and are used as an inlet of grouting materials.
11. The rod body is a CFRP ribbed sand blasting rib with the diameter phi 6-phi 12 being different, and a BFRP rib, a GFRP rib and the like can be used for replacing the CFRP ribbed sand blasting rib. The CFRP is a carbon fiber reinforced composite material, the BFRP is basalt fiber reinforced plastic, and the GFRP is glass fiber reinforced plastic.
The construction mode in the tunnel is as follows:
tunnel excavation, arrange dangerous back, execute immediately and do the firm country rock of first layer injection concrete, the back ventilation is accomplished in the injection, then punch on the annular assigned position of country rock, the degree of depth and the width in hole are confirmed according to the design, adopt the clear hole of high-pressure air gun after punching, then take anchor rod head 12 with novel CFRP combination cavity stock, slowly insert, after waiting to insert the bottom, thick liquid stopper 6 is only installed, cover backing plate 4, screw up nut 5 simultaneously, pour into the epoxy resin mortar into at 3 lower extremes of cavity threaded steel pipe afterwards, the ratio is cement: epoxy resin: sand: water =1: 0.17: the mass ratio of 1:0.4, enters the anchor rod pore passage through the grout outlet 7, and the exhaust pipe 10 exhausts. And immediately installing a plug 8 for plugging after the hole is filled with slurry.
The technical features disclosed above are not limited to the combinations with other features disclosed, and other combinations between the technical features can be performed by those skilled in the art according to the purpose of the utility model, so as to achieve the purpose of the utility model.
Claims (7)
1. A novel combination cavity stock for tunnel preliminary bracing, its characterized in that includes stock main part (1): the anchor rod comprises an anchor rod body (1), wherein an anchoring end (2) is sleeved at the bottom of the surface of the anchor rod body (1), a hollow threaded pipe (3) sleeved on the anchor rod body (1) is welded at the bottom end of the anchoring end (2), a backing plate (4) is arranged on the surface of the hollow threaded pipe (3), a nut (5) positioned below the backing plate (4) is fixedly arranged on the surface of the hollow threaded pipe (3), a grout stop plug (6) positioned above the backing plate (4) is movably arranged on the surface of the hollow threaded pipe (3), a grout outlet (7) is formed in the top of the surface of the hollow threaded pipe (3), the bottom end of the anchor rod body (1) extends into the bottom of the hollow threaded pipe (3), a plug (8) positioned below the hollow threaded pipe (3) is arranged at the bottom of the surface of the hollow threaded pipe (3), an anchor rod head (12) is arranged at the top end of the anchor rod body (1), one side of the surface of the hollow threaded pipe (3) is communicated with an exhaust pipe (10), and a support frame (9) is arranged on the surface of the anchor rod main body (1).
2. The novel combined hollow anchor rod for the preliminary tunnel support of claim 1, wherein the exhaust pipe (10) is a hollow pipe made of soft plastic material such as polypropylene.
3. The novel combined hollow anchor rod for tunnel preliminary bracing according to claim 1, characterized in that the grout stop plug (6) is a rubber plug made of vulcanized rubber material.
4. The novel combined hollow anchor rod for tunnel preliminary support according to claim 1, characterized in that the aperture of the grout stop plug (6) is not less than sixteen millimeters, and the number of the grout outlet (7) is not less than two.
5. The novel combined hollow anchor rod for tunnel preliminary bracing according to claim 1, characterized in that the anchor rod main body (1) is CFRP ribbed sand blasting rib, BFRP rib, GFRP rib.
6. The novel combined hollow anchor rod for the primary tunnel support of claim 1, wherein two exhaust pipe clamps (11) are sleeved on the surface of the anchor rod body (1), the exhaust pipe (10) is fixedly installed on the anchor rod body (1) through the exhaust pipe clamps (11), and the exhaust pipe clamps (11) are clamped at the concave parts on the surface of the exhaust pipe (10).
7. The novel combined hollow anchor rod for the preliminary tunnel support of claim 1, wherein the support frame (9) comprises a first mounting ring (91) and a second mounting ring (94) which are fixedly connected to the anchor rod body (1), an external connecting ring (92) is arranged on the outer side of the first mounting ring (91), the first mounting ring (91) and the external connecting ring (92) are welded together through three short connecting rods (93), and the external connecting ring (92) and the second mounting ring (94) are welded together through three long connecting rods (95).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122105736.3U CN215672290U (en) | 2021-09-02 | 2021-09-02 | Novel combined hollow anchor rod for tunnel primary support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122105736.3U CN215672290U (en) | 2021-09-02 | 2021-09-02 | Novel combined hollow anchor rod for tunnel primary support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215672290U true CN215672290U (en) | 2022-01-28 |
Family
ID=79958926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122105736.3U Expired - Fee Related CN215672290U (en) | 2021-09-02 | 2021-09-02 | Novel combined hollow anchor rod for tunnel primary support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215672290U (en) |
-
2021
- 2021-09-02 CN CN202122105736.3U patent/CN215672290U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104675141B (en) | A kind of FRP pipe constraint cement-base composite material reinforces pillarwork | |
| CN105201530A (en) | Repairing and strengthening method for large cracks on rock tunnel lining | |
| KR20170075753A (en) | Prefabricated pier column member with steel-concrete composite structure | |
| CN203569582U (en) | Connecting structure of concrete pipe pile and bearing platform | |
| CN107762532A (en) | Tunnel vault band mould grouting construction method | |
| CN104514572A (en) | Rod body connecting device, anchor rod and manufacturing method thereof | |
| CN103590414B (en) | A kind of attachment structure of concrete tubular pile and cushion cap | |
| CN210946426U (en) | Road and bridge crack reinforcing structure | |
| CN111576403B (en) | Pile splicing structure and bearing platform anchoring structure using PHC tubular pile | |
| CN215107286U (en) | Fair-faced concrete wall formwork system | |
| CN112324475A (en) | Method for reinforcing shield tunnel lining structure | |
| CN209838430U (en) | Shield segment structure with reserved hourglass-shaped hole | |
| CN204435906U (en) | Planting reinforced bar into concrete device | |
| CN210396107U (en) | Template clamp replacing through-die split bolt and step-by-step fastening and reinforcing | |
| CN107740542A (en) | One kind three and the connection of muscle bunchy full grout sleeve and three and muscle bunchy connection method | |
| CN111425208A (en) | Anti-suspension device, system and method based on shield segment | |
| CN206110124U (en) | Bored concrete pile stake end post grouting device | |
| CN205369329U (en) | Reinforced structure is repaired on wind -powered electricity generation field fan pylon basis | |
| CN215672290U (en) | Novel combined hollow anchor rod for tunnel primary support | |
| CN204571341U (en) | A kind of FRP pipe constraint cement-base composite material reinforces pillarwork | |
| CN104060590A (en) | Reinforced seepage-proofing structure for pressure diversion tunnel and construction method for reinforced seepage-proofing structure | |
| CN209838429U (en) | Back anchor shield constructs lining cutting supporting construction | |
| CN104153464A (en) | Steel pipe concrete jacking inserting plate type control device and method for connecting steel pipe concrete jacking inserting plate type control device to steel pipe column | |
| CN207121994U (en) | A kind of concrete component attachment structure | |
| CN212716667U (en) | Steel pipe concrete and sprayed concrete rigid combined structure tunnel supporting system |
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: 20220128 |