Anti-seismic protective tunnel portal structure of tunnel
By setting up door opening components with reinforcement frames and supporting steel bars in the tunnel doors and protective components with protective components with protective frames and supporting beams in the tunnel doors, the strength and safety issues of tunnel doors during vibration are solved, and the earthquake-resistant protection effect is achieved.
Patent Information
- Application Number
- CN202422254052.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-09-13
AI Technical Summary
The existing tunnel doors made of slab concrete are of low strength and are easily damaged during earthquakes or rockfall impacts, and there is a problem of low safety in use.
The ground reinforcement panels and protective components are adopted, including door opening components and protective components. The door opening structure is strengthened by setting up reinforcement frames and supporting steel bars, and combined with protective outer frames, support beams and inclined shock absorbing plates, the shock resistance and buffering performance of the door opening are improved.
Effectively prevent the door opening from cracking or falling off during vibration, improve the strength and protection effect, extend the service life, and enhance the safety of the tunnel opening.
Smart Images
Figure CN223269983U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tunnel portal supports, in particular to a tunnel earthquake-resistant protection portal structure. Background Art
[0002] The tunnel portal is a supporting structure built and decorated by masonry. It is the supporting structure connecting the tunnel body and the road cutting outside the tunnel entrance. It is located in the exposed part at both ends of the tunnel. The tunnel portal ensures the safety and stability of the tunnel entrance and also decorates the tunnel entrance.
[0003] End-wall portals are a common tunnel portal structure. Currently, existing end-wall portals are primarily constructed using flaked stone concrete. Construction workers first erect a formwork at the tunnel entrance. After the formwork is erected, concrete is poured into the formwork, and a certain amount of flaked stone is added to the concrete. Once the flaked stone concrete solidifies, the formwork is removed, completing the portal construction and supporting the tunnel entrance. Regarding the aforementioned related technologies, the inventors discovered that portals constructed using flaked stone concrete have low strength and are susceptible to damage during earthquakes or when impacted by falling rocks from above. This results in a low safety issue for the portal, and therefore a need exists to provide a tunnel seismic protection portal structure to address this issue. Utility Model Content
[0004] The main purpose of the utility model is to provide a tunnel earthquake-resistant protection portal structure, which can effectively solve the problems in the background technology.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] A tunnel seismic protection portal structure includes a ground reinforcement plate, a portal assembly is provided in the middle of the top of the ground reinforcement plate, and a protection assembly is provided outside the portal assembly;
[0007] The door opening assembly includes a first curved door opening, a second curved door opening is provided on one side of the first curved door opening, a T-shaped connecting block is provided on one side of the second curved door opening, a reinforcement frame is provided inside the second curved door opening, and a supporting steel bar is provided in the middle of the reinforcement frame;
[0008] The protective component includes a protective outer frame, a supporting beam is provided on the top of the protective outer frame, and an inclined shock-absorbing plate is provided on the top of the supporting beam, a supporting steel pipe is provided on the bottom of the supporting beam, and a limiting support plate is provided in the middle of the supporting steel pipe, and a casting hole is provided in the middle of the limiting support plate.
[0009] Preferably, the bottom of the first curved door opening is connected to the top of the ground reinforcement plate, and the first curved door opening and the second curved door opening are combined to form an integral door opening. A connecting groove is provided on the side of the first curved door opening close to the top of the second curved door opening, and the connecting groove passes through the side of the first curved door opening. One side of the first curved door opening is fixedly connected to a limiting plate.
[0010] Preferably, the second curved door opening is fixedly connected to a T-shaped connecting block on one side of the top close to the first curved door opening, and the T-shaped connecting block is slidably connected to the inside of the connecting groove, one end of the T-shaped connecting block contacts the limiting plate on the side of the first curved door opening, and the middle of the second curved door opening and the first curved door opening are both hollow.
[0011] Preferably, the interior of the second curved door opening is fixedly connected to a reinforcement frame, and there are two reinforcement frames, which are symmetrically distributed inside the second curved door opening and the first curved door opening respectively. The interior of the reinforcement frame is fixedly connected to support steel bars, and the support steel bars are horizontally installed in the middle of the reinforcement frame. There are multiple support steel bars, which are evenly distributed in the middle of the reinforcement frame. The reinforcement frame and the support steel bars are arranged correspondingly, and the space between the reinforcement frame and the support steel bars is filled with concrete.
[0012] Preferably, the protective outer frame is sleeved on the outside of the door opening assembly, and the inner wall of the protective outer frame contacts the outer walls of the first curved door opening and the second curved door opening, and the protective outer frame is fixedly connected to a supporting beam on the inside of one side close to the first curved door opening and the second curved door opening, and the two ends of the supporting beam are connected to the inner walls on both sides of the protective outer frame, and the top of the supporting beam is fixedly connected to an inclined shock-absorbing plate, and the inclined shock-absorbing plate is arranged at an inclined angle between the supporting beam and the protective outer frame, and there are multiple inclined shock-absorbing plates, two in a group, and each two inclined shock-absorbing plates are symmetrically arranged and evenly distributed on the top of the supporting beam.
[0013] Preferably, the bottom of the support beam is fixedly connected to a support steel pipe, and there are multiple support steel pipes, which are evenly distributed on the bottom of the support beam. The middle sleeve of the support steel pipe is provided with a limit support plate, and there are multiple limit support plates, which are symmetrically distributed on both sides of the protective outer frame. The limit support plate is fixedly connected to the protective outer frame, and a mounting hole is opened in the middle of the limit support plate, and the support steel pipe is arranged corresponding to the mounting hole. A casting hole is opened on the side of the limit support plate close to the support steel pipe, and the casting hole is located between every two groups of support steel pipes.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] 1. The reinforcement frame and supporting steel bars are provided to strengthen the service strength of the first and second curved door openings, thereby preventing cracks in the door openings during vibration, which may cause the entire door opening to fall off and cause blockage of the openings. In addition, the first and second curved door openings are spliced together, which facilitates the overall installation of the first and second curved door openings and improves work efficiency.
[0016] 2. The protective effect of the door opening is improved by setting up protective components, and the use strength of the device is further improved by setting up a protective outer frame, a limit support plate and a supporting steel pipe. The supporting strength of the first curved door opening and the second curved door opening is improved by setting up multiple supporting steel pipes to prevent shaking during vibration. The top of the protective outer frame is provided with a supporting beam and an inclined shock-absorbing plate, which effectively cushions the stones falling from the tunnel and extends the service life of the door opening components. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the structure of the entire device of the utility model;
[0018] Figure 2 This is a schematic structural diagram of the overall development of the device of the utility model;
[0019] Figure 3 It is a structural diagram of the door opening assembly of the utility model;
[0020] Figure 4 It is a structural diagram of the protective component of the utility model.
[0021] In the figure: 1. Ground reinforcement plate; 2. Door opening assembly; 3. First curved door opening; 4. Second curved door opening; 5. T-shaped connecting block; 6. Connecting groove; 7. Reinforcement frame; 8. Support steel bars; 9. Protection assembly; 10. Protection outer frame; 11. Support beam; 12. Inclined shock-absorbing plate; 13. Limit support plate; 14. Support steel pipe; 15. Installation hole; 16. Casting hole. DETAILED DESCRIPTION
[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.
[0023] See also Figure 1 、 Figure 2 、 Figure 3 As shown, a tunnel seismic protection portal structure includes a ground reinforcement plate 1, a portal assembly 2 is provided in the middle of the top of the ground reinforcement plate 1, and a protection assembly 9 is provided outside the portal assembly 2;
[0024] The door opening assembly 2 includes a first curved door opening 3, a second curved door opening 4 is provided on one side of the first curved door opening 3, and a T-shaped connecting block 5 is provided on one side of the second curved door opening 4, a reinforcing frame 7 is provided inside the second curved door opening 4, and a supporting steel bar 8 is provided in the middle of the reinforcing frame 7, the bottom of the first curved door opening 3 is connected to the top of the ground reinforcing plate 1, and the first curved door opening 3 and the second curved door opening 4 are combined to form an integral door opening, a connecting groove 6 is provided on the side of the first curved door opening 3 close to the top of the second curved door opening 4, and the connecting groove 6 passes through the side of the first curved door opening 3, one side of the first curved door opening 3 is fixedly connected to the limiting plate, the second curved door opening 4 is fixedly connected to the T-shaped connecting block 5 on the side near the top of the first curved door opening 3, and the T-shaped connecting block 5 is slidably connected to the inside of the connecting groove 6, one end of the T-shaped connecting block 5 is in contact with the limiting plate on the side of the first curved door opening 3, and the second curved door opening 4 is in contact with the first curved door opening The middle of the door opening 3 is hollow, and the interior of the second curved door opening 4 is fixedly connected with a reinforcement frame 7, and there are two reinforcement frames 7, which are symmetrically distributed inside the second curved door opening 4 and the first curved door opening 3. The interior of the reinforcement frame 7 is fixedly connected with a supporting steel bar 8, and the supporting steel bar 8 is horizontally installed in the middle of the reinforcement frame 7. There are multiple supporting steel bars 8, which are evenly distributed in the middle of the reinforcement frame 7. The reinforcement frame 7 and the supporting steel bar 8 are correspondingly arranged, and the middle of the reinforcement frame 7 and the supporting steel bar 8 is filled with concrete. The strength of the first curved door opening 3 and the second curved door opening 4 is strengthened by the reinforcement frame 7 and the support steel bar 8, so as to prevent the door opening from cracking when vibration occurs, causing the entire door opening to fall off and causing blockage of the opening. The first curved door opening 3 and the second curved door opening 4 are spliced together, which facilitates the overall installation of the first curved door opening 3 and the second curved door opening 4, thereby improving work efficiency.
[0025] See also Figure 1 、 Figure 2 、 Figure 4As shown, the protection component 9 includes a protection outer frame 10, a support beam 11 is provided on the top of the protection outer frame 10, and an inclined shock-absorbing plate 12 is provided on the top of the support beam 11, a support steel pipe 14 is provided at the bottom of the support beam 11, and a limited support plate 13 is provided in the middle of the support steel pipe 14, and a casting hole 16 is provided in the middle of the limited support plate 13. The protection outer frame 10 is sleeved on the outside of the door opening component 2, and the inner wall of the protection outer frame 10 is in contact with the outer wall of the first curved door opening 3 and the second curved door opening 4. The protection outer frame 10 is close to the outer wall of the first curved door opening 3 and the second curved door opening 4. A supporting beam 11 is fixedly connected to the inside of one side of the first curved door opening 3 and the second curved door opening 4, and the two ends of the supporting beam 11 are connected to the inner walls of the two sides of the protective outer frame 10. The top of the supporting beam 11 is fixedly connected with an inclined shock-absorbing plate 12, and the inclined shock-absorbing plate 12 is arranged between the supporting beam 11 and the protective outer frame 10 at an inclined angle. There are multiple inclined shock-absorbing plates 12, each two in a group, and each two inclined shock-absorbing plates 12 are symmetrically arranged and evenly distributed on the top of the supporting beam 11. The bottom of the supporting beam 11 is fixedly connected with The support steel pipe 14 is provided with a plurality of support steel pipes 14, which are evenly distributed at the bottom of the support beam 11. The middle sleeve of the support steel pipe 14 is provided with a limit support plate 13, and there are a plurality of limit support plates 13, which are symmetrically distributed on both sides of the protective outer frame 10. The limit support plate 13 is fixedly connected to the protective outer frame 10, and a mounting hole 15 is provided in the middle of the limit support plate 13, and the support steel pipe 14 is provided corresponding to the mounting hole 15. A casting hole 16 is provided on one side of the limit support plate 13 close to the support steel pipe 14, and the casting hole 16 is located at the bottom of the support steel pipe 14. Between every two groups of supporting steel pipes 14, a protective component 9 is provided to improve the protective effect of the door opening, and the protective outer frame 10, the limiting support plate 13 and the supporting steel pipe 14 are provided to further improve the use strength of the device. By providing multiple supporting steel pipes 14, the supporting strength of the first curved door opening 3 and the second curved door opening 4 is improved to prevent shaking during vibration, and a supporting beam 11 and an inclined shock-absorbing plate 12 are provided on the top of the protective outer frame 10, which effectively buffers the stones falling from the tunnel and extends the service life of the door opening component 2.
[0026] It should be noted that the present invention is a tunnel earthquake-resistant protective tunnel door structure. When in use, the T-shaped connecting block 5 on one side of the second curved doorway 4 is inserted into the connecting groove 6 on one side of the first curved doorway 3, thereby completing the stable connection between the second curved doorway 4 and the first curved doorway 3, and a limiting plate is installed on one side of the first curved doorway 3. The T-shaped connecting block 5 contacts the limiting plate on one side of the first curved doorway 3, and the limiting plate is located inside the connecting groove 6. The protective outer frame 10 is sleeved on the outside of the first curved doorway 3 and the second curved doorway 4 to achieve protection of the first curved doorway 3 and the second curved doorway 4. The interior of the first curved doorway 3 and the second curved doorway 4 are both provided with a reinforcement frame 7 and a plurality of supporting steel bars 8. Concrete is poured between the reinforcement frame 7 and the supporting steel bars 8 to ensure the stability between the reinforcement frame 7 and the supporting steel bars 8 and prevent the supporting steel bars 8 from being deformed for a long time. After use, it shakes, affecting the supporting effect of the first curved door opening 3 and the second curved door opening 4. The reinforcing frame 7 and the supporting steel bars 8 are set to prevent the first curved door opening 3 and the second curved door opening 4 from falling off as a whole when cracks occur, thereby extending the service life of the first curved door opening 3 and the second curved door opening 4. The top of the protective outer frame 10 is installed with a supporting beam 11 and an inclined shock-absorbing plate 12 to buffer the force impacting the protective outer frame 10, further improving the stability of the device and reducing the direct contact between the door opening assembly 2 and the outside world. A plurality of supporting steel pipes 14 are positioned and installed on both sides of the protective outer frame 10 through a limiting support plate 13, and a pouring hole 16 is opened in the middle of the limiting support plate 13, which facilitates the pouring of concrete, so that the concrete can be positioned and connected to the supporting steel pipe 14 and the limiting support plate 13, thereby achieving effective protection of the door opening assembly 2.
[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.
Claims
1. A tunnel seismic protection portal structure, comprising a ground reinforcement plate (1), characterized in that: A door opening assembly (2) is provided in the middle of the top of the ground reinforcement plate (1), and a protective assembly (9) is provided outside the door opening assembly (2); The door opening assembly (2) comprises a first arc-shaped door opening (3), a second arc-shaped door opening (4) is provided on one side of the first arc-shaped door opening (3), a T-shaped connecting block (5) is provided on one side of the second arc-shaped door opening (4), a reinforcement frame (7) is provided inside the second arc-shaped door opening (4), and a supporting steel bar (8) is provided in the middle of the reinforcement frame (7); The protection component (9) comprises a protection outer frame (10), a support beam (11) is provided on the top of the protection outer frame (10), and an inclined shock-absorbing plate (12) is provided on the top of the support beam (11), a support steel pipe (14) is provided on the bottom of the support beam (11), and a limited support plate (13) is provided in the middle of the support steel pipe (14), and a casting hole (16) is provided in the middle of the limited support plate (13).
2. The tunnel seismic protection portal structure according to claim 1, characterized in that: The bottom of the first curved door opening (3) is connected to the top of the ground reinforcement plate (1), and the first curved door opening (3) and the second curved door opening (4) are combined to form an integral door opening. A connecting groove (6) is provided on one side of the first curved door opening (3) close to the top of the second curved door opening (4), and the connecting groove (6) passes through the side of the first curved door opening (3). One side of the first curved door opening (3) is fixedly connected to a limiting plate.
3. The tunnel seismic protection portal structure according to claim 2, characterized in that: A T-shaped connecting block (5) is fixedly connected to one side of the top of the second curved door opening (4) close to the first curved door opening (3), and the T-shaped connecting block (5) is slidably connected to the inside of the connecting groove (6), one end of the T-shaped connecting block (5) contacts the limiting plate on the side of the first curved door opening (3), and the middle of the second curved door opening (4) and the first curved door opening (3) are both hollow.
4. The tunnel seismic protection portal structure according to claim 3, characterized in that: The interior of the second arc-shaped door opening (4) is fixedly connected to a reinforcement frame (7), and there are two reinforcement frames (7), which are symmetrically distributed inside the second arc-shaped door opening (4) and the first arc-shaped door opening (3), respectively. The interior of the reinforcement frame (7) is fixedly connected to a support steel bar (8), and the support steel bar (8) is installed in the middle of the reinforcement frame (7) in a transverse manner. There are multiple support steel bars (8), which are evenly distributed in the middle of the reinforcement frame (7). The reinforcement frame (7) and the support steel bar (8) are correspondingly arranged, and the space between the reinforcement frame (7) and the support steel bar (8) is filled with concrete.
5. The tunnel seismic protection portal structure according to claim 1, characterized in that: The protective outer frame (10) is sleeved on the outside of the door opening assembly (2), and the inner wall of the protective outer frame (10) contacts the outer walls of the first curved door opening (3) and the second curved door opening (4); a supporting beam (11) is fixedly connected to the inside of the protective outer frame (10) on one side close to the first curved door opening (3) and the second curved door opening (4), and both ends of the supporting beam (11) are connected to the inner walls of both sides of the protective outer frame (10); the top of the supporting beam (11) is fixedly connected to an inclined shock-absorbing plate (12), and the inclined shock-absorbing plate (12) is arranged between the supporting beam (11) and the protective outer frame (10) at an inclined angle; there are multiple inclined shock-absorbing plates (12), two of which form a group, and each two inclined shock-absorbing plates (12) are symmetrically arranged and evenly distributed on the top of the supporting beam (11).
6. The tunnel seismic protection portal structure according to claim 5, characterized in that: The bottom of the support beam (11) is fixedly connected with a support steel pipe (14), and there are multiple support steel pipes (14) that are evenly distributed at the bottom of the support beam (11). A limit support plate (13) is sleeved in the middle of the support steel pipe (14), and there are multiple limit support plates (13) that are symmetrically distributed on both sides of the protective outer frame (10). The limit support plate (13) is fixedly connected to the protective outer frame (10), and a mounting hole (15) is provided in the middle of the limit support plate (13), and the support steel pipe (14) and the mounting hole (15) are arranged correspondingly. A casting hole (16) is provided on the side of the limit support plate (13) close to the support steel pipe (14), and the casting hole (16) is located between every two groups of support steel pipes (14).