CN219012648U - Tunnel primary support foot locking anchor pipe and arch frame connection reinforcing device - Google Patents
Tunnel primary support foot locking anchor pipe and arch frame connection reinforcing device Download PDFInfo
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- CN219012648U CN219012648U CN202320099544.2U CN202320099544U CN219012648U CN 219012648 U CN219012648 U CN 219012648U CN 202320099544 U CN202320099544 U CN 202320099544U CN 219012648 U CN219012648 U CN 219012648U
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- anchor pipe
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model relates to the technical field of tunnel primary support foot locking construction, in particular to a device for reinforcing connection of a tunnel primary support foot locking anchor pipe and an arch frame, which comprises a primary support arch frame and a foot locking anchor pipe, wherein the foot locking anchor pipe is driven into surrounding rocks on the front side and the rear side of the primary support arch frame, an inner foot locking connecting plate and an outer foot locking connecting plate are respectively fixedly connected to the inner side and the outer side of the primary support arch frame, two holes are formed in the inner foot locking connecting plate, two U-shaped clamping grooves are formed in the outer foot locking connecting plate, the foot locking anchor pipe penetrates through the holes of the inner foot locking connecting plate and the U-shaped clamping grooves of the outer foot locking connecting plate to drive into the surrounding rocks, and the foot locking anchor pipe is fixed by the holes of the inner foot locking connecting plate and the U-shaped clamping grooves of the outer foot locking connecting plate. According to the tunnel primary support lock leg anchor pipe and arch frame connection reinforcing device, the inner lock leg connecting plates and the outer lock leg connecting plates are welded on the inner side and the outer side of the steel arch frame in a staggered mode up and down according to the design setting angles of the lock legs, so that the setting angles of the lock legs can be effectively controlled, and accurate positioning is achieved.
Description
Technical Field
The utility model relates to the technical field of tunnel primary support leg locking construction, in particular to a device for reinforcing connection between a tunnel primary support leg locking anchor pipe and an arch frame.
Background
In recent years, with the leap development of traffic industry in China, the number and scale of tunnel engineering are continuously increased, and most tunnels pass through bad geological areas such as clay-basin limestone, carbonaceous slate, weak phyllite and the like. In tunnel construction, in order to improve the whole support intensity of primary support and guarantee its stability, set up two lock foot anchor pipes in the arch bar position of primary support bow member both sides to effectively control tunnel primary support subsidence convergence deformation.
For the connection of the foot locking anchor pipe and the primary arch frame, the current design drawing shows that the locking ring made of phi 22 steel bars is connected, the foot locking anchor pipe passes through the ring, and the locking ring is not closed. When the tunnel passes through the unfavorable geology, surrounding rock deformation increases, because the catch is not closed, can be pulled open gradually at the atress in-process, leads to anchor pipe and primary arch frame separation to the catch is less with the area of contact of lock foot anchor pipe, and welding area is less, and welding quality is poor, and the connection effect is relatively poor, because the atress is too big easily to lead to lock foot anchor pipe and catch to drop, makes lock foot anchor pipe not reach the effect of the joint atress with primary arch frame.
Disclosure of Invention
The utility model aims to provide a device for reinforcing connection between a tunnel primary support foot locking anchor pipe and an arch frame, which aims to solve the problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a reinforcing means is connected with bow member to primary support lock foot anchor pipe in tunnel, includes primary support bow member and lock foot anchor pipe, in the country rock of both sides around the primary support bow member is beaten into to lock foot anchor pipe, its characterized in that: the inner side and the outer side of the primary arch frame are respectively fixedly connected with an inner side lock foot connecting plate and an outer side lock foot connecting plate, two holes are formed in the inner side lock foot connecting plate, two U-shaped clamping grooves are formed in the outer side lock foot connecting plate, the lock foot anchor pipe penetrates through the holes of the inner side lock foot connecting plate and the U-shaped clamping grooves of the outer side lock foot connecting plate to drive into surrounding rock, and the lock foot anchor pipe is fixed by the holes of the inner side lock foot connecting plate and the U-shaped clamping grooves of the outer side lock foot connecting plate.
Furthermore, the inner side lock foot connecting plate and the outer side lock foot connecting plate are welded on the flange plates on two sides of the primary arch frame according to the design of the lock foot anchor pipe at an angle.
Further, the hole is used for penetrating through the pin locking anchor pipe, and the aperture of the hole is determined according to the diameter of the pin locking anchor pipe and is 5mm larger than the diameter of the pin locking anchor pipe.
Further, the U-shaped clamping groove is used for clamping the foot locking anchor pipe, and the size of the clamping groove of the U-shaped clamping groove is determined according to the diameter of the foot locking anchor pipe.
Further, the inner side lock foot connecting plate and the outer side lock foot connecting plate are both made of 15-20mm thick steel plates, the plate length of the inner side lock foot connecting plate is 32cm, and the plate width is 13cm; the length of the outer lock leg connecting plate is 32cm, and the width of the outer lock leg connecting plate is 10cm.
Further, the pin locking anchor pipe penetrates through the hole of the inner pin locking connecting plate, and the pin locking anchor pipe is in surfacing connection with the hole of the inner pin locking connecting plate in a fillet welding mode.
Further, the pin locking anchor pipe is in surfacing connection with the U-shaped clamping groove of the outer pin locking connecting plate in a fillet welding mode.
Furthermore, the opening end of the U-shaped clamping groove is provided with steel bars with hooks at two sides, and the steel bars wrap two foot locking anchor pipes on the connecting plate.
Furthermore, the diameter of the steel bar is 5mm larger than the diameter of the anchor pipe, and the steel bar is in surfacing connection with the outer side foot locking connecting plate and the foot locking anchor pipe in a fillet welding mode.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the tunnel primary support lock leg anchor pipe and arch frame connection reinforcing device, the inner lock leg connecting plates and the outer lock leg connecting plates are welded on the inner side and the outer side of the steel arch frame in a staggered mode up and down according to the design setting angles of the lock legs, so that the setting angles of the lock legs can be effectively controlled, and accurate positioning is achieved.
2. The device for reinforcing the connection between the primary support foot locking anchor pipe and the arch frame of the tunnel can effectively reinforce the connection between the foot locking anchor pipe and the primary support arch frame, ensure that the foot locking anchor pipe can play a better role when the primary support is stressed excessively, and ensure the stability of the foot locking anchor pipe.
3. The device for connecting and reinforcing the primary support leg locking anchor pipe and the arch frame of the tunnel is simple and convenient to install, is convenient to operate on a construction site, and can be better applied to actual site construction.
Drawings
FIG. 1 is a schematic view of the connection of a foot locking anchor pipe and a steel arch in the present utility model;
FIG. 2 is a schematic view of a connecting plate of an inner side lock foot anchor pipe according to the present utility model;
FIG. 3 is a schematic view of a connecting plate for an outer side foot locking anchor pipe according to the present utility model;
fig. 4 is a schematic view of welding the outer connection plates in this example.
In the figure: the primary support arch centering device comprises a primary support arch centering device 1, a foot locking anchor pipe 2, an inner foot locking connecting plate 3, an outer foot locking connecting plate 4, reinforcing steel bars 5, holes 6 and clamping grooves 7.
Detailed Description
The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.
Example 1
The utility model provides a tunnel preliminary bracing pin anchor pipe and bow member connection reinforcing means, is shown as fig. 1-4, includes preliminary bracing bow member 1 and lock foot anchor pipe 2, lock foot anchor pipe 2 is beaten into in the country rock of preliminary bracing bow member 1 front and back both sides, the inboard and the outside of preliminary bracing bow member 1 are fixedly connected with inboard lock foot connecting plate 3 and outside lock foot connecting plate 4 respectively, be equipped with two holes 6 on the inboard lock foot connecting plate 3, be equipped with two U-shaped draw-in grooves 7 on the outside lock foot connecting plate 4, lock foot anchor pipe 2 is beaten into the country rock through hole 6 of inboard lock foot connecting plate 3 and the U-shaped draw-in groove 7 of outside lock foot connecting plate 4, uses hole 6 and the U-shaped draw-in groove 7 of outside lock foot connecting plate 4 of inboard lock foot connecting plate 3 to fix lock foot anchor pipe 2.
The inner side lock foot connecting plate 3 and the outer side lock foot connecting plate 4 are welded on flange plates on two sides of the primary arch 1 according to the design of the lock foot anchor pipe 2. The long edges of the inner lock leg connecting plate 3 and the outer lock leg connecting plate 4 are welded with the lap joint of the flange plates of the primary arch 1, and the lap joint is welded in a fillet welding mode.
The hole 6 is used for penetrating through the foot locking anchor pipe 2, and the aperture of the hole 6 is determined according to the diameter of the foot locking anchor pipe 2 and is 5mm larger than the diameter of the foot locking anchor pipe 2. The U-shaped clamping groove 7 is used for clamping the foot locking anchor pipe 2, and the size of the clamping groove of the U-shaped clamping groove 7 is determined according to the diameter of the foot locking anchor pipe 2.
The inner side lock foot connecting plate 3 and the outer side lock foot connecting plate 4 are made of 15-20mm thick steel plates, the plate length of the inner side lock foot connecting plate 3 is 32cm, and the plate width is 13cm; the length of the outer lock leg connecting plate 4 is 32cm, and the width of the outer lock leg connecting plate is 10cm.
The pin locking anchor pipe 2 passes through the hole 6 of the inner pin locking connecting plate 3, and the pin locking anchor pipe 2 is in surfacing connection with the hole 6 of the inner pin locking connecting plate 3 in a fillet welding mode. The pin locking anchor pipe 2 is in surfacing connection with the U-shaped clamping groove 7 of the outer pin locking connecting plate 4 in a fillet welding mode.
As shown in fig. 4, the open end of the U-shaped clamping groove 7 is provided with a steel bar 5 with hooks at two sides, and the steel bar 5 wraps the two foot locking anchor pipes 2 on the connecting plate. The diameter of the steel bar 5 is larger than the diameter of the anchor pipe by 5mm, and the steel bar 5 is in surfacing connection with the outer side foot locking connecting plate 4 and the foot locking anchor pipe 2 in a fillet welding mode. The diameter of the steel bar 5 is phi 16.
Example two
The working principle is as follows: when a tunnel passes through a weak surrounding rock section, larger settlement convergence deformation can be generated due to overlarge primary support stress, and the stress deformation of the primary support can be controlled to a certain extent by arranging a lock leg at the arch leg of the primary support arch, so that the lock leg anchor pipe can better play a role in ensuring the integrity of the lock leg anchor pipe and the arch, and the welding area of the lock leg anchor pipe, the primary support arch and a connecting device is increased compared with a conventional method through the connection of a lock leg connecting plate, the connection strength between the lock leg anchor pipe and the primary support arch is ensured, and the overall stress performance of the primary support arch and the lock leg is improved; the inner and outer lock leg connecting plates are arranged at a certain distance from top to bottom at the inner side and the outer side of the arch leg of the primary arch frame, the setting angle of the lock legs can be controlled through the distance between every two connecting plates, the setting angle of the lock legs is ensured, and the construction quality of the lock legs is ensured; the primary arch centering and the foot locking anchor pipe are connected by the foot locking connecting plate, so that the whole device is rapid to install and easy to operate, and is convenient for field installation.
The above-described embodiments are merely a few preferred embodiments of the present utility model, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present utility model and the related teachings of the above-described embodiments.
Claims (9)
1. The utility model provides a reinforcing means is connected with bow member to tunnel primary support lock foot anchor pipe, includes primary support bow member (1) and lock foot anchor pipe (2), in the country rock of both sides around primary support bow member (1) are beaten into to lock foot anchor pipe (2), its characterized in that: the primary arch frame is characterized in that an inner side and an outer side of the primary arch frame (1) are fixedly connected with an inner side lock foot connecting plate (3) and an outer side lock foot connecting plate (4) respectively, two holes (6) are formed in the inner side lock foot connecting plate (3), two U-shaped clamping grooves (7) are formed in the outer side lock foot connecting plate (4), a lock foot anchor pipe (2) penetrates through the holes (6) of the inner side lock foot connecting plate (3) and the U-shaped clamping grooves (7) of the outer side lock foot connecting plate (4) to drive surrounding rock, and the lock foot anchor pipe (2) is fixed by the aid of the holes (6) of the inner side lock foot connecting plate (3) and the U-shaped clamping grooves (7) of the outer side lock foot connecting plate (4).
2. The tunnel primary support leg anchor pipe and arch frame connection reinforcing device according to claim 1, wherein: the inner side lock foot connecting plate (3) and the outer side lock foot connecting plate (4) are welded on flange plates on two sides of the primary arch frame (1) according to the design of the lock foot anchor pipe (2) in a beating angle mode.
3. The tunnel primary support leg anchor pipe and arch frame connection reinforcing device according to claim 1, wherein: the holes (6) are used for penetrating through the foot locking anchor pipes (2), and the apertures of the holes (6) are determined according to the diameters of the foot locking anchor pipes (2) and are larger than the diameters of the foot locking anchor pipes (2) by 5mm.
4. The tunnel primary support leg anchor pipe and arch frame connection reinforcing device according to claim 1, wherein: the U-shaped clamping groove (7) is used for clamping the foot locking anchor pipe (2), and the size of the clamping groove of the U-shaped clamping groove (7) is determined according to the diameter of the foot locking anchor pipe (2).
5. The tunnel primary support leg anchor pipe and arch frame connection reinforcing device according to claim 1, wherein: the inner side lock foot connecting plate (3) and the outer side lock foot connecting plate (4) are made of 15-20mm thick steel plates, the plate length of the inner side lock foot connecting plate (3) is 32cm, and the plate width is 13cm; the length of the outer lock leg connecting plate (4) is 32cm, and the width of the outer lock leg connecting plate is 10cm.
6. The tunnel primary support leg anchor pipe and arch frame connection reinforcing device according to claim 1, wherein: the pin locking anchor pipe (2) passes through the hole (6) of the inner side pin locking connecting plate (3), and the pin locking anchor pipe (2) is in surfacing connection with the hole (6) of the inner side pin locking connecting plate (3) in a fillet welding mode.
7. The tunnel primary support leg anchor pipe and arch frame connection reinforcing device according to claim 1, wherein: the pin locking anchor pipe (2) is in surfacing connection with the U-shaped clamping groove (7) of the outer pin locking connecting plate (4) in a fillet welding mode.
8. The tunnel primary support leg anchor pipe and arch frame connection reinforcing device according to claim 1, wherein: the opening end of the U-shaped clamping groove (7) is provided with steel bars (5) with hooks at two sides, and the steel bars (5) wrap the two foot locking anchor pipes (2) on the connecting plate.
9. The tunnel primary leg lock anchor pipe and arch frame connection reinforcing device as claimed in claim 8, wherein: the diameter of the steel bar (5) is larger than the diameter of the anchor pipe by 5mm, and the steel bar (5) is in surfacing connection with the outer side foot locking connecting plate (4) and the foot locking anchor pipe (2) in a fillet welding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320099544.2U CN219012648U (en) | 2023-02-02 | 2023-02-02 | Tunnel primary support foot locking anchor pipe and arch frame connection reinforcing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320099544.2U CN219012648U (en) | 2023-02-02 | 2023-02-02 | Tunnel primary support foot locking anchor pipe and arch frame connection reinforcing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219012648U true CN219012648U (en) | 2023-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320099544.2U Active CN219012648U (en) | 2023-02-02 | 2023-02-02 | Tunnel primary support foot locking anchor pipe and arch frame connection reinforcing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219012648U (en) |
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2023
- 2023-02-02 CN CN202320099544.2U patent/CN219012648U/en active Active
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