A prefabricated shield tunnel pedestrian passage

Abstract

This utility model discloses a prefabricated shield tunnel pedestrian passage, installed inside the prefabricated shield tunnel, including a prefabricated frame and prefabricated support plates. Several prefabricated frames are arranged at intervals along the length of the prefabricated shield tunnel to form a support frame. Each prefabricated frame has a bottom connection point for detachable connection to the bottom wall of the prefabricated shield tunnel and a side connection point for detachable connection to the side wall of the prefabricated shield tunnel. Several prefabricated support plates are sequentially connected to the support frame to form a protective passage floor plate. Each prefabricated support plate is detachably connected to at least two prefabricated frames in the support frame. Compared with the prior art, the detachable connection method facilitates disassembly and reassembly and allows for reuse.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction auxiliary tools, specifically to a prefabricated shield tunnel pedestrian passage. Background Technology

[0002] Prefabricated shield tunnels are a modern construction method that combines prefabricated components with shield technology. Its core feature is that tunnel lining components are produced in factories and then assembled on site to achieve efficient and precise tunnel construction.

[0003] Prefabricated shield tunnels are equipped with pedestrian walkways to facilitate the passage of construction workers. The pedestrian walkways in prefabricated shield tunnels consist of welded support frames, multiple shaped steel walkways laid on the support frames, and wooden planks laid on the shaped steel walkways. The multiple shaped steel walkways are welded together in sequence, and their assembly and disassembly process is relatively labor-intensive. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a prefabricated shield tunnel pedestrian passage to solve the problem that the disassembly and assembly process of the pedestrian passage in the prefabricated shield tunnel is relatively labor-intensive.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a prefabricated shield tunnel pedestrian passage, installed inside the prefabricated shield tunnel, comprising:

[0006] A prefabricated frame, wherein a plurality of prefabricated frames are arranged at intervals along the length of the prefabricated shield tunnel to cooperate in forming a support frame, each prefabricated frame having a bottom connection point for detachable connection with the bottom wall of the prefabricated shield tunnel and a side connection point for detachable connection with the side wall of the prefabricated shield tunnel.

[0007] A prefabricated support plate, wherein several prefabricated support plates are sequentially connected to a support frame to form a protective channel base plate, and each prefabricated support plate is detachably connected to at least two prefabricated frames in the support frame.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] This prefabricated shield tunnel pedestrian passage is mainly composed of several prefabricated frames and several prefabricated support plates, which are connected by a detachable connection method for easy assembly and disassembly and reuse. Specifically, during assembly: several prefabricated frames are arranged at intervals along the length of the prefabricated shield tunnel to form a support frame, and each prefabricated frame has a bottom connection point and a side connection point to the inner wall of the prefabricated shield tunnel to ensure that the support frame formed after connection has sufficient stability. Then, several prefabricated support plates are connected to the support frame in sequence to form the bottom plate of the protective passage. Each prefabricated support plate is detachably connected to at least two prefabricated frames to ensure that the bottom plate of the protective passage has sufficient stability for the safe passage of construction personnel. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the assembled structure according to an embodiment of the present invention;

[0011] Figure 2 for Figure 1 A schematic diagram of the prefabricated frame structure;

[0012] Figure 3 for Figure 2 Schematic diagram of the structure of the irregular-shaped connecting strip;

[0013] Figure 4 for Figure 1 Schematic diagram of the prefabricated support slab in the middle;

[0014] Figure 5 for Figure 1 Schematic diagram of the connection between the prefabricated guardrail and the upright;

[0015] Figure 6 for Figure 1 A schematic diagram showing the connection between several prefabricated guardrails.

[0016] The reference numerals in the accompanying drawings include: prefabricated frame 1, upright 11, horizontal bar 12, bracket 13, irregular connecting strip 14, curved section 141, prefabricated support plate 2, fixed steel scaffold board 21, toe board 22, prefabricated protective rod 3, sleeve 4, pipe clamp 5. Detailed Implementation

[0017] The present invention will be further described in detail below through specific embodiments:

[0018] like Figures 1-6As shown in the figure, this utility model embodiment proposes a prefabricated shield tunnel pedestrian passage, which is installed inside the prefabricated shield tunnel and includes a prefabricated frame 1 and a prefabricated support plate 2. The prefabricated frame 1 is arranged in a plurality of prefabricated frames at intervals along the length of the prefabricated shield tunnel to form a support frame. Each prefabricated frame 1 has a bottom connection point for detachable connection with the bottom wall of the prefabricated shield tunnel and a side connection point for detachable connection with the side wall of the prefabricated shield tunnel. The prefabricated support plate 2 is arranged in a plurality of prefabricated frames and is sequentially connected to the support frame to form a protective passage bottom plate. Each prefabricated support plate 2 is detachably connected to at least two prefabricated frames 1 in the support frame.

[0019] This prefabricated shield tunnel pedestrian passage is mainly composed of several prefabricated frames 1 and several prefabricated support plates 2, which are connected by a detachable connection method to facilitate disassembly and reassembly and can be reused. Specifically, during assembly: several prefabricated frames 1 are arranged at intervals along the length of the prefabricated shield tunnel to form a support frame, and each prefabricated frame 1 has a bottom connection point and a side connection point to the inner wall of the prefabricated shield tunnel to ensure that the support frame formed after connection has sufficient stability. Then, several prefabricated support plates 2 are connected to the support frame in sequence to form the bottom plate of the protective passage. Each prefabricated support plate 2 is detachably connected to at least two prefabricated frames 1 to ensure that the bottom plate of the protective passage has sufficient stability so that construction personnel can pass safely.

[0020] To improve the protection performance of the pedestrian passage of this prefabricated shield tunnel, it also includes prefabricated guardrails 3. Several prefabricated guardrails 3 are connected sequentially to one side of the support frame along the length direction to form a guardrail. Each prefabricated guardrail 3 is detachably connected to at least two prefabricated frames 1 in the support frame.

[0021] After the support frame and the bottom plate of the protective passage are assembled, several prefabricated protective rods 3 are sequentially connected to one side of the support frame along its length to form a protective railing, thereby improving the protective performance of the pedestrian passage in this prefabricated shield tunnel. Each prefabricated protective rod 3 is detachably connected to at least two prefabricated frames 1 in the support frame to ensure sufficient stability of the formed protective railing.

[0022] Since one side of the protective passage base plate abuts against the sidewall of the prefabricated shield tunnel and the other side is not protected, several prefabricated protective rods 3 are connected to the side of the protective passage base plate that is not protected to provide protection.

[0023] The guardrails can be arranged in multiple intervals along the height of the posts; in this embodiment, two are shown.

[0024] To better understand this solution, the prefabricated frame 1 will be described in detail below.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, according to another embodiment of the present invention, a prefabricated shield tunnel pedestrian passage, wherein each of the prefabricated frames 1 includes a vertical pole 11, a horizontal bar 12, and a bracket 13. The bottom end of the vertical pole 11 forms the bottom connection point to be attached to the bottom wall of the prefabricated shield tunnel and can be detachably connected. One end of the horizontal bar 12 is connected to the middle of one side wall of the vertical pole 11, and the other end is connected to a shaped connecting strip 14. One end of the shaped connecting strip 14 extends outward from the horizontal bar 12 to form the side connection point to be attached to the side wall of the prefabricated shield tunnel and can be detachably connected. There are two brackets 13, both connected to the top of the shaped connecting strip 14. The two brackets 13 are distributed at different ends of the horizontal bar 12 and are both arranged perpendicular to the horizontal bar 12. One of the brackets 13 is also partially attached to the vertical pole 11. The bracket 13 is detachably connected to the corresponding prefabricated support plate 2.

[0026] In this embodiment, each prefabricated frame 1 consists of uprights 11, crossbars 12, irregularly shaped connecting strips 14, and two brackets 13, which cooperate to form a stable prefabricated frame 1. The uprights 11 support the crossbars 12 and brackets 13, ensuring the installed prefabricated frame 1 has a certain height; they also cooperate with the prefabricated guardrails 3 to form a guardrail. The crossbars 12, irregularly shaped connecting strips 14, and two brackets 13 cooperate to support the bottom plate of the protective passage.

[0027] Specifically: The upright 11 is made of angle steel and has two connecting holes spaced apart along its length on one side wall. The two connecting holes allow two prefabricated protective rods 3 to pass through to form protection. The other side wall of the upright 11 has a first bolt hole, which is used to connect with the prefabricated support plate 2 with a bolt. The bottom of the upright 11 is cut into an arc shape to adapt to the curvature of the prefabricated shield tunnel for abutment. A connecting block that fits against the bottom wall of the prefabricated shield tunnel can also be formed at the bottom of the upright 11. The connecting block and the bottom wall of the prefabricated shield tunnel are locked and fixed with screws.

[0028] The crossbar 12 and the two brackets 13 are both made of angle steel. The two brackets 13 are welded to the top of both ends of the crossbar 12 in a one-to-one correspondence and the horizontal sections of the two brackets 13 are arranged facing each other. One of the brackets 13 is also welded and fixed to the upright 11, and the other bracket is welded and fixed to the irregular connecting strip 14. Each bracket 13 has a second bolt hole at both ends for bolting to the prefabricated support plate 2.

[0029] The irregular connecting strip 14 is made of rectangular iron strip, and one end of it is bent to form a curved section 141 to fit against the side wall of the prefabricated shield tunnel, ensuring that the connection between the irregular connecting strip 14 and the side wall of the prefabricated shield tunnel has sufficient stability; a third bolt hole is opened on this curved section 141, and bolts are used at this third bolt hole to connect and fix it to the side wall of the prefabricated shield tunnel.

[0030] Next, the prefabricated support plate 2 will be described in detail.

[0031] like Figure 1 and Figure 4 As shown, according to another embodiment of the present invention, the prefabricated shield tunnel pedestrian passage includes each prefabricated support plate 2 comprising a fixed steel scaffold board 21 and a toe board 22. The fixed steel scaffold board 21 is detachably connected to the corresponding prefabricated frame 1. There are two toe boards 22, which are rotatably connected to different sides of the fixed steel scaffold board 21 along its length. When in use, they are all rotated to the side above the fixed steel scaffold board 21.

[0032] During installation, the prefabricated steel scaffold boards 21 are laid on the installed support frame. Specifically, one prefabricated steel scaffold board 21 can be connected to two brackets 13 in two, three, four or more prefabricated frames 1. At the same time, the two toe boards 22 are rotated upward to different sides above the prefabricated steel scaffold board 21 to protect both sides of the prefabricated steel scaffold board 21. The two adjacent prefabricated support plates 2 are connected by abutting.

[0033] The four corners of the fixed steel scaffold board 21 are provided with fourth bolt holes. The fourth bolt holes of the fixed steel scaffold board 21 are aligned with the second bolt holes on the corresponding bracket 13 and then fixed together with bolts.

[0034] The fixed steel scaffold board 21 and the toe board 22 are connected by hinges, which allows the toe board 22 to rotate to the required angle and have a certain degree of stability. In actual use, the included angle between the toe board 22 and the fixed steel scaffold board 21 is about 90 degrees. The toe board 22 can be fixedly connected to the corresponding bracket 13 or upright 11 by bolts to keep the toe board 22 stable in the required state for use.

[0035] Finally, the prefabricated protective rod 3 will be described in detail.

[0036] like Figure 1 , Figure 5 and Figure 6 As shown, according to another embodiment of the present utility model, in the prefabricated shield tunnel pedestrian passage, each of the prefabricated protective rods 3 is made by cutting and processing thin-walled steel pipes and external threads are formed on the outer walls of both ends, and a sleeve 4 is threadedly connected between two adjacent prefabricated protective rods 3.

[0037] The sleeve 4 is made by cutting and processing steel pipes, and its two ends are internally threaded to quickly connect the two prefabricated protective rods 3 by means of threaded connection.

[0038] During installation, the prefabricated protective rod 3 passes through the connecting holes on the corresponding prefabricated frame 1 and is fixed to the prefabricated frame 1 by pipe clamps 5. Specifically, one end of the prefabricated protective rod 3 passes through the corresponding connecting holes on at least two uprights 11 in the prefabricated frame 1, which can be three or four, etc.; then, two pipe clamps 5 are fixedly connected at the position where the prefabricated protective rod 3 connects to each upright 11, with the two pipe clamps 5 abutting against different sides of the upright 11, thereby achieving the limiting and fixing of the prefabricated protective rod 3 and the upright 11.

[0039] The assembly process for this prefabricated shield tunnel pedestrian passage is as follows:

[0040] According to the preset installation method, several prefabricated frames 1 are installed first. The bottom end of the upright 11 in each prefabricated frame 1 is attached to the bottom wall of the prefabricated shield tunnel for connection. The curved section 141 of the irregular connecting strip 14 in each prefabricated frame 1 is attached to the side wall of the prefabricated shield tunnel and then fixed with bolts.

[0041] Then, precast support plates 2 are laid, and several precast support plates 2 are connected in sequence. The fixed steel scaffolding board 21 in each precast support plate 2 is bolted to the bracket 13 in the corresponding precast frame 1, and the toe plate 22 in each precast support plate 2 is also bolted to the corresponding upright 11.

[0042] Finally, the prefabricated protective rod 3 is installed. The prefabricated protective rod 3 passes through the connecting hole on the corresponding upright 11. Adjacent prefabricated protective rods 3 are connected by sleeves 4. Then, each upright 11 and the prefabricated protective rod 3 are fixed by two pipe clamps 5.

[0043] As the shield tunnel continues to advance, the installation is carried out in a cyclical manner according to the above sequence.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A pedestrian passageway for a prefabricated shield tunnel, installed inside a prefabricated shield tunnel, characterized in that, include: A prefabricated frame, wherein a plurality of prefabricated frames are arranged at intervals along the length of the prefabricated shield tunnel to cooperate in forming a support frame, each prefabricated frame having a bottom connection point for detachable connection with the bottom wall of the prefabricated shield tunnel and a side connection point for detachable connection with the side wall of the prefabricated shield tunnel. A prefabricated support plate, wherein several prefabricated support plates are sequentially connected to a support frame to form a protective channel base plate, and each prefabricated support plate is detachably connected to at least two prefabricated frames in the support frame.

2. The prefabricated shield tunnel pedestrian passage according to claim 1, characterized in that, Also includes: A prefabricated guardrail, wherein several prefabricated guardrails are connected sequentially to one side of the support frame along its length to form a guardrail, and each prefabricated guardrail is detachably connected to at least two prefabricated frames in the support frame.

3. A prefabricated shield tunnel pedestrian passage according to claim 1 or 2, characterized in that, Each of the aforementioned prefabricated support plates includes: Prefabricated steel scaffolding boards, wherein the prefabricated steel scaffolding boards are detachably connected to the corresponding prefabricated frames; The toe board has two parts and is rotatably connected to different sides of the fixed steel scaffold board along its length. When in use, both toe boards are rotated to the side above the fixed steel scaffold board.

4. A prefabricated shield tunnel pedestrian passage according to claim 1 or 2, characterized in that, Each of the aforementioned prefabricated frames includes: The upright pole, whose bottom end forms the bottom connection point to be attached to the bottom wall of the prefabricated shield tunnel and can be detachably connected. A crossbar, one end of which is connected to the middle of one side wall of the upright, and the other end of which is connected to a shaped connecting strip. One end of the shaped connecting strip extends outward from the crossbar to form the side connection point, which fits into the side wall of the prefabricated shield tunnel and can be detached. The bracket has two parts, both connected to the top of the irregular connecting strip. The two brackets are distributed at different ends of the crossbar and are arranged perpendicular to the crossbar. One of the brackets is also partially attached to the upright. The bracket is detachably connected to the corresponding prefabricated support plate.

5. A prefabricated shield tunnel pedestrian passage according to claim 4, characterized in that, Each bracket is made of angle steel, and the horizontal sections of the two brackets are arranged facing each other.

6. A prefabricated shield tunnel pedestrian passage according to claim 4, characterized in that, The irregularly shaped connecting strip is made of iron bar and one end is bent to form a curved section to fit against the side wall of the prefabricated shield tunnel.

7. A prefabricated shield tunnel pedestrian passage according to claim 2, characterized in that, Both ends of the prefabricated protective rod are formed with external threads, and a sleeve is threadedly connected between two adjacent prefabricated protective rods.

8. A prefabricated shield tunnel pedestrian passage according to claim 2, characterized in that, The prefabricated protective rod passes through the connection hole opened on the corresponding prefabricated frame and is fixed and limited between the prefabricated protective rod and the corresponding prefabricated frame by pipe clamps.

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