Quickly-mounted concrete prefabricated part

Abstract

The utility model relates to the field of shield segment manufacturing, and discloses a concrete prefabricated part capable of being installed quickly, which comprises a plurality of standard blocks, a plurality of adjacent blocks and a top sealing block, a first tenon is fixedly connected to the outer wall of the front end of the top sealing block, a plurality of first tenons are fixedly connected to the outer walls of the front ends of the standard blocks and the adjacent blocks, and a plurality of second tenons are fixedly connected to the outer walls of the front ends of the standard blocks and the adjacent blocks. And a plurality of first mortises are formed in the outer walls of the rear ends of the standard block and the adjacent block. Compared with most existing concrete prefabricated parts, the waterproof groove is formed in the concrete prefabricated part, the waterstop is arranged in the groove, when the pipe pieces are spliced, the waterstop is squeezed between the pipe pieces, so that the waterproof groove is sealed, the waterstop effect is achieved, meanwhile, the waterproof first gaskets are arranged on the two sides of the bolt holes, and the waterproof effect is achieved. And the second gasket and the nut are tightened, so that the first gasket is tightly attached to the outer wall of the bolt hole, and the effect of stopping water at the bolt connecting position is achieved.

Description

Technical Field

[0001] This utility model relates to the field of tunnel segment manufacturing, and in particular to a precast concrete component that can be installed quickly. Background Technology

[0002] Precast concrete components are concrete products produced in a standardized manner in a factory, formed through pouring and subsequent curing. They are then transported to the site and assembled directly, replacing traditional on-site pouring construction. Shield tunnel segments are the permanent supporting structure of the tunnel wall. They are made of precast reinforced concrete and assembled into a ring structure to withstand ground pressure, soil and water pressure, and construction loads, thereby ensuring the stability of the tunnel structure.

[0003] An existing patent (publication number: CN216553932U) discloses a tunnel segment, including a base plate. The surface of the base plate is provided with a connecting layer, which includes a connecting plate and a protrusion. The protrusion is fixedly connected to one side of the connecting plate, and the other side of the connecting plate has a matching engagement groove. The protrusion is slidably connected to the engagement groove. The connecting plate is fixedly connected to the ends of two base plates, and the surface of the connecting plate has a through hole. In the process of realizing this utility model, the inventors found the following problems with the prior art: the tunnel segment has a waterproof effect through the reinforcement layer, but attention is not paid to the waterproofing of the segment connection and the segment connection bolt holes. These places are prone to water seepage, which affects the quality of the project.

[0004] Therefore, those skilled in the art have provided a method for rapidly installing precast concrete components to address the problems mentioned in the background section. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a precast concrete component that allows for rapid installation. Compared to traditional precast concrete components, this component utilizes a tenon-and-mortise structure for the segments. The tenon and mortise facilitate quick alignment and connection of the segments, improving assembly efficiency and accuracy. Furthermore, the segments are staggered and the tenon-and-mortise structure disperses stress. A waterproof groove is incorporated, with a water-stop strip installed within it. As the segments are joined, the water-stop strip is pressed against each other, sealing the waterproof groove and achieving a water-stopping effect. Additionally, waterproof first gaskets are placed on both sides of the bolt holes, and tightened with second gaskets and nuts, ensuring the first gaskets fit tightly against the outer wall of the bolt holes, thus achieving a water-stopping effect at the bolt connections.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A precast concrete component that can be installed quickly includes multiple standard blocks, multiple adjacent blocks, and a capping block. The front outer wall of the capping block is fixedly connected with a first tenon. The front outer walls of the standard blocks and adjacent blocks are all fixedly connected with multiple first tenons. The rear outer wall of the capping block is provided with a first mortise. The rear outer walls of the standard blocks and adjacent blocks are all provided with multiple first mortises.

[0008] The standard block and one side of the adjacent block are both fixedly connected with a second tenon. The other side of the standard block and one side of the adjacent block are both provided with a second mortise. The upper ends of the outer walls of the standard block, the adjacent block and the capping block are all provided with waterproof grooves. The front end of the outer wall of the first tenon and the inner wall of the first mortise are both provided with multiple first bolt holes. The outer wall of the second tenon and the inner wall of the second mortise are both provided with multiple second bolt holes. Bolts are provided on the inner walls of the first bolt holes and the second bolt holes. Nuts are threadedly connected to both ends of the bolts.

[0009] Through the above technical solution, the precast concrete component, by setting mortise and tenon structure, facilitates the connection between segments. At the same time, the staggered installation of the mortise and tenon structure and the segments can effectively disperse stress and improve the stability of the shield tunnel segment project.

[0010] Furthermore, a ring of the tube segment consists of the four standard blocks, two adjacent blocks, and one capping block. Adjacent blocks are provided on both sides of the capping block, and a standard block is provided at the end of the adjacent block away from the capping block.

[0011] The above technical solution involves first assembling standard blocks, then assembling adjacent blocks on both sides of the standard blocks, and finally installing the capping block, thereby completing the assembly of a ring of tunnel segments.

[0012] Furthermore, secondary grouting holes are provided at the center of the inner walls of the standard block, adjacent blocks, and capping block;

[0013] The above technical solution, by setting secondary grouting holes, facilitates grouting during later maintenance of the pipe segments and prevents water from seeping into the pipe wall due to gaps between the pipe segments and the outer wall.

[0014] Furthermore, multiple hand holes are provided around the inner walls of the standard block, adjacent block, and capping block;

[0015] The above technical solution, by setting a hand hole, facilitates the installation of washers and nuts on both sides of the bolt after the bolt passes through the bolt hole, thus ensuring the stability of the connection.

[0016] Furthermore, the outer walls of both sides of the adjacent block on the other side are fixedly connected with second tenons, and the outer walls of both sides of the capping block are provided with second mortises.

[0017] Due to the special nature of the capping block, it needs to be installed from the outside and not from the inside. Therefore, mortise and tenon grooves are provided on both sides of the capping block to facilitate its installation.

[0018] Furthermore, a second washer is tightly fitted to the outer wall of the nut near the middle of the bolt, and a first washer is tightly fitted to the outer wall of the second washer near the middle of the bolt.

[0019] Through the above technical solution, the first gasket is closely attached to the outlet end face of the bolt hole, which plays a sealing role on the end face and prevents water from seeping into the bolt hole. The second gasket can play a role in shock absorption and further sealing.

[0020] Furthermore, both the first bolt hole and the second bolt hole extend to the inner wall of the hand hole, and the bolt passes through the bolt hole with both ends resting inside the hand hole;

[0021] With the above technical solution, the bolt hole passes through the inside of the segment and extends into the hand hole at both ends, so that the bolt passes through the bolt hole to fix the segment.

[0022] Furthermore, the waterproof groove is tightly fitted with a water-stop strip;

[0023] Through the above technical solution, by setting a waterstop, after the pipe segments are connected, the pipe segments are squeezed against each other, which in turn squeezes the waterstop. The waterstop fills the waterproof groove, thereby sealing the connection of the pipe segments.

[0024] This utility model has the following beneficial effects:

[0025] This utility model proposes a quick-installation precast concrete component. Compared with most existing precast concrete components, this precast concrete component uses a tenon and mortise structure for the segments. The tenon and mortise facilitate quick alignment and connection of the segments, improving assembly efficiency and accuracy. At the same time, the segments are assembled in an interlaced manner, and the stress is dispersed through the tenon and mortise structure, which can better bear external stress and improve the construction quality of the segments.

[0026] This utility model proposes a precast concrete component that allows for rapid installation. Compared to most existing precast concrete components, this component features a waterproof groove with a water-stop strip inside. When the segments are assembled, the water-stop strip is pressed against each other, sealing the waterproof groove and achieving a water-stopping effect. Simultaneously, waterproof first gaskets are placed on both sides of the bolt holes, and second gaskets and nuts are tightened to ensure the first gaskets fit tightly against the outer wall of the bolt holes, thus achieving a water-stopping effect at the bolt connection. Attached Figure Description

[0027] Figure 1This is a structural schematic diagram of a precast concrete component that can be installed quickly, as proposed in this utility model.

[0028] Figure 2 This is a schematic diagram of the structure of a standard block in a precast concrete component that can be installed quickly, as proposed in this utility model.

[0029] Figure 3 This is a schematic diagram of the structure of an adjacent block in a precast concrete component that can be installed quickly, as proposed in this utility model.

[0030] Figure 4 This is a schematic diagram of the structure of the capping block in a precast concrete component that can be installed quickly, as proposed in this utility model.

[0031] Figure 5 This is a schematic diagram of the bolts and nuts in a precast concrete component that can be installed quickly, as proposed in this utility model.

[0032] Legend:

[0033] 1. Standard block; 2. Adjacent block; 3. Capping block; 4. First tenon; 5. First mortise; 6. Second tenon; 7. Second mortise; 8. Secondary grouting hole; 9. First bolt hole; 10. Hand hole; 11. Bolt; 12. First washer; 13. Second washer; 14. Nut; 15. Second bolt hole; 16. Waterproof groove; 17. Waterstop. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] One embodiment provided by this utility model:

[0036] Reference Figure 1 and Figure 5 A precast concrete component that can be installed quickly includes multiple standard blocks 1, multiple adjacent blocks 2, and a capping block 3. A first tenon 4 is fixedly connected to the front outer wall of the capping block 3. Multiple first tenons 4 are fixedly connected to the front outer walls of both the standard blocks 1 and the adjacent blocks 2. A first mortise 5 is provided on the rear outer wall of the capping block 3. Multiple first mortise 5 are provided on the rear outer walls of both the standard blocks 1 and the adjacent blocks 2.

[0037] A second tenon 6 is fixedly connected to one side of the outer wall of the standard block 1 and the adjacent block 2. A second mortise 7 is provided on the other side of the outer wall of the standard block 1 and the adjacent block 2. A waterproof groove 16 is provided on the upper end of the outer walls of the standard block 1, the adjacent block 2 and the capping block 3. A plurality of first bolt holes 9 are provided on the outer wall of the front end of the first tenon 4 and the inner wall of the first mortise 5. A plurality of second bolt holes 15 are provided on the outer wall of the second tenon 6 and the inner wall of the second mortise 7. Bolts 11 are provided on the inner walls of the first bolt holes 9 and the second bolt holes 15. Nuts 14 are threadedly connected to both ends of the bolts 11.

[0038] The precast concrete components feature a tenon and mortise structure, which facilitates the connection between tunnel segments. At the same time, the staggered installation of the tenon and mortise structure and the tunnel segments can effectively disperse stress and improve the stability of the tunnel segment project.

[0039] Reference Figure 2 , Figure 3 and Figure 4 A ring of pipe segments consists of four standard blocks 1, two adjacent blocks 2, and one capping block 3. Adjacent blocks 2 are set on both sides of the capping block 3, and a standard block 1 is set at the end of the adjacent block 2 away from the capping block 3. The assembly of a ring of pipe segments is completed by first assembling the standard blocks 1, then assembling the adjacent blocks 2 on both sides of the standard blocks 1, and finally installing the capping block 3. Secondary grouting holes 8 are opened at the center of the inner wall of the standard blocks 1, adjacent blocks 2, and capping block 3. By setting secondary grouting holes 8, it is convenient to grout during the later maintenance of the pipe segments and prevent water from seeping into the pipe wall due to the gap between the pipe segments and the outer wall.

[0040] Reference Figure 1 and Figure 5Multiple hand holes 10 are provided around the inner walls of the standard block 1, adjacent block 2, and capping block 3. These hand holes 10 facilitate the installation of washers and nuts 14 on both sides of the bolt 11 after the bolt 11 passes through the bolt hole. This ensures the stability of the connection. On the other side, the outer walls of both sides of the adjacent block 2 are fixedly connected with second tenons 6. The outer walls of both sides of the capping block 3 are provided with second mortises 7. Due to the special nature of the capping block 3, it needs to be installed from the outside and not from the inside. Therefore, mortises are provided on both sides of the capping block 3 to facilitate its installation. The nuts 14 are located near the bolts. A second gasket 13 is tightly attached to the outer wall of one side of the middle of bolt 11. A first gasket 12 is tightly attached to the outer wall of the second gasket 13 near the middle of bolt 11. The first gasket 12 is tightly attached to the outlet end face of the bolt hole and acts as a seal to prevent water from seeping into the bolt hole. The second gasket 13 can play a role in shock absorption and further sealing. The first bolt hole 9 and the second bolt hole 15 both extend to the inner wall of the hand hole 10. Bolt 11 passes through the bolt hole and both ends fall into the hand hole 10. The bolt hole passes through the inside of the tube segment and extends both ends into the hand hole 10, so that bolt 11 passes through the bolt hole to fix the tube segment.

[0041] Reference Figure 2 and Figure 4 The waterproof groove 16 is tightly connected to a waterstop 17. By setting the waterstop 17, after the pipe segments are connected, the pipe segments are squeezed against each other, and at the same time, the waterstop 17 is squeezed. The waterstop 17 fills the waterproof groove 16, thereby sealing the connection of the pipe segments.

[0042] Working principle: Workers assemble four standard blocks 1, then install adjacent blocks 2 on both sides of standard block 1, and finally install the capping block 3 to complete a circular splice. When splicing the pipe segments, bolts 11 are inserted into the second bolt holes 15 of one of the pipe segments, aligning the second tenon 6 and the second mortise 7, thus quickly aligning the two pipe segments. Bolts 11 pass through the second bolt holes 15 on both sides, with both ends falling into the hand holes 10. Then, through the hand holes 10, the first washer 12 and the second washer 13 are installed sequentially on both sides of the bolt 11. Finally, the nut 14 is tightened for fixation. The installed pipe segments will compress against each other, reducing... Minimal gaps are created to compress the waterstop 17, thereby sealing the gaps in the pipe segments. After one ring of pipe segments is assembled, a second ring of pipe segments is assembled at the front end of the pipe segments. The second ring of pipe segments is staggered with the first ring of pipe segments. The bolt 11 is placed into the first bolt hole 9 of one of the pipe segments, and the first tenon 4 and the first mortise 5 are aligned to facilitate the quick alignment and assembly of the second ring of pipe segments. After the assembly is completed, washers and nuts 14 are installed on both ends of the bolt 11 in sequence. The nuts 14 press the two washers tightly against the inner wall of the hand hole 10, thereby sealing both ends of the bolt hole and preventing water from seeping into the pipe segment.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A precast concrete component that can be installed quickly, comprising a plurality of standard blocks (1), a plurality of adjacent blocks (2), and a capping block (3), characterized in that: The front outer wall of the capping block (3) is fixedly connected with a first tenon (4), and the front outer walls of the standard block (1) and the adjacent block (2) are both fixedly connected with multiple first tenons (4). The rear outer wall of the capping block (3) is provided with a first mortise (5), and the rear outer walls of the standard block (1) and the adjacent block (2) are both provided with multiple first mortise (5). The standard block (1) and the adjacent block (2) on one side are fixedly connected with a second tenon (6). The standard block (1) and the adjacent block (2) on one side are provided with a second mortise (7). The upper end of the outer walls of the standard block (1), the adjacent block (2) and the capping block (3) are provided with a waterproof groove (16). The outer wall of the front end of the first tenon (4) and the inner wall of the first mortise (5) are provided with a plurality of first bolt holes (9). The outer wall of the second tenon (6) and the inner wall of the second mortise (7) are provided with a plurality of second bolt holes (15). The inner walls of the first bolt holes (9) and the second bolt holes (15) are provided with bolts (11). The two ends of the bolts (11) are threadedly connected with nuts (14).

2. The precast concrete component with rapid installation according to claim 1, characterized in that: The tube segment consists of four standard blocks (1), two adjacent blocks (2) and one capping block (3). Adjacent blocks (2) are provided on both sides of the capping block (3), and a standard block (1) is provided at the end of the adjacent block (2) away from the capping block (3).

3. A precast concrete component for rapid installation according to claim 1, characterized in that: Secondary grouting holes (8) are provided at the center of the inner walls of the standard block (1), adjacent block (2) and capping block (3).

4. A precast concrete component for rapid installation according to claim 1, characterized in that: Multiple handholes (10) are provided around the inner walls of the standard block (1), adjacent block (2) and capping block (3). The first bolt hole (9) and the second bolt hole (15) extend to the inner wall of the handhole (10). The bolt (11) passes through the bolt hole and its two ends fall into the handhole (10).

5. A precast concrete component for rapid installation according to claim 1, characterized in that: The two outer walls of the adjacent block (2) on the other side are fixedly connected with second tenons (6), and the two outer walls of the capping block (3) are provided with second mortises (7).

6. A precast concrete component for rapid installation according to claim 1, characterized in that: The nut (14) is closely fitted with a second washer (13) on the outer wall near the middle of the bolt (11), and the second washer (13) is closely fitted with a first washer (12) on the outer wall near the middle of the bolt (11).

7. A precast concrete component for rapid installation according to claim 1, characterized in that: The waterproof groove (16) is tightly fitted with a waterstop strip (17).

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