A ring-shaped member and a method for constructing a ring-shaped member

Abstract

The present application relates to the technical field of assembled subway station, particularly relates to a ring-shaped component and a construction method of the ring-shaped component, the ring-shaped component comprises a plurality of steel shells provided with sealed cavities, each steel shell is sequentially spliced, each sealed cavity is fixedly provided with a reinforcing framework, two adjacent steel shells are respectively a first ring piece and a second ring piece, a first end of the first ring piece is spliced with a second end of the second ring piece provided with a positioning hole, and a steel pipe for grouting is inserted into the sealed cavity of the second ring piece through the positioning hole and away from the first ring piece; the steel shell located at the top of the ring-shaped component is provided with a grouting hole; the ring-shaped component is provided with a hollow steel shell structure, and the reinforcing framework is arranged in the steel shell, so that the supporting strength of the steel shell as a ring piece is ensured, the weight of the ring piece is reduced, and grouting and construction are facilitated.

Description

Technical Field

[0001] This invention relates to the field of prefabricated subway station technology, and in particular to a ring-shaped component and a construction method for the ring-shaped component. Background Technology

[0002] Prefabricated subway stations are a new form of prefabricated construction. They involve the streamlined production of steel bars and concrete, traditionally used in construction, into prefabricated components in a factory, which are then assembled in one go on the main structure construction site. Compared to traditional cast-in-place subway station structures, prefabricated subway stations offer advantages such as higher efficiency, controllable quality, and energy conservation and environmental friendliness.

[0003] Prefabricated subway stations are assembled sequentially along the length of the station by multiple closed-loop ring-shaped components. Each ring-shaped component is composed of multiple ring pieces arranged sequentially along its circumference. To facilitate public passage, existing prefabricated subway stations need to provide larger internal spaces, resulting in relatively heavy weights for each ring piece. For example, the top ring piece of Fukeng Station in the second phase of Shenzhen Metro Line 16 weighs as much as 126 tons. The excessive weight of the prefabricated ring pieces poses significant challenges to on-site construction. If the number of ring pieces in the same ring-shaped component is increased by further splitting the individual ring pieces, the number of connection nodes between the ring pieces in the same ring-shaped component will increase, which will adversely affect the overall structural strength of the ring-shaped component. Summary of the Invention

[0004] The technical problem to be solved by this invention is that the existing prefabricated subway stations have a large weight of individual ring pieces, which is inconvenient for construction.

[0005] In order to solve the above-mentioned technical problems, the purpose of the present invention is to provide a ring-shaped component, including a plurality of steel shells with sealing cavities, wherein the steel shells are spliced ​​together in sequence, and a reinforcing skeleton is fixedly provided in each sealing cavity; Let the two adjacent steel shells be a first ring plate and a second ring plate respectively. The first end of the first ring plate is spliced ​​with the second end of the second ring plate. A grouting steel pipe communicating with the sealing cavity of the first ring plate is fixedly inserted into the first end of the first ring plate. A positioning hole is provided at the position opposite to the grouting steel pipe at the second end of the second ring plate. The other end of the grouting steel pipe passes through the positioning hole and extends into the sealing cavity of the second ring plate. The steel shell located at the top of the annular component is provided with grouting holes.

[0006] As a preferred embodiment, each of the reinforcing frames includes a plurality of cross-arranged reinforcing bars, and the ends of each reinforcing bar are respectively welded to the inner wall of the sealing cavity where the reinforcing bar is located.

[0007] As a preferred embodiment, the intersections of the reinforcing bars within the same sealed cavity are all tied or welded in place.

[0008] As a preferred embodiment, the first end of the first ring is provided with a limiting protrusion, the first end of the grouting steel pipe is fixedly inserted into the top of the limiting protrusion, the second end of the second ring is provided with a limiting groove that matches the limiting protrusion, and the positioning hole is provided at the bottom of the limiting groove.

[0009] As a preferred embodiment, the cross-section of each of the limiting grooves is arranged in an isosceles trapezoidal shape.

[0010] As a preferred embodiment, a plurality of grouting steel pipes are provided at intervals at the first end of the first ring piece, and positioning holes are provided at the second end of the second ring piece at positions opposite to each of the grouting steel pipes; the end of each grouting steel pipe away from each of the first ring pieces is respectively inserted into each of the positioning holes.

[0011] As a preferred embodiment, each of the steel shells includes multiple steel plates, and the steel plates of the same steel shell are sequentially welded together to form the sealing cavity, and the thickness of each steel plate is greater than or equal to 5 mm and less than or equal to 7 mm.

[0012] A construction method for the above-mentioned ring-shaped component, characterized by comprising the following steps: Step S1: Assemble the steel shells in sequence to form a ring-shaped component; Step S2: Grout is injected into the sealing cavity of each steel shell through the grouting hole located at the top of the annular component.

[0013] As a preferred embodiment, in step S1, splicing the steel shells includes: inserting the grouting steel pipe fixed on one of the two adjacent steel shells into the positioning hole of the other of the two adjacent steel shells.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The annular component of this invention includes multiple steel shells with sealed cavities, which are sequentially spliced ​​to form the annular component. Each sealed cavity contains a fixed reinforcing frame. Two adjacent steel shells are designated as a first annular piece and a second annular piece. The first end of the first annular piece is spliced ​​to the second end of the second annular piece. A grouting steel pipe communicating with the sealed cavity of the first annular piece is fixedly inserted into the first end of the first annular piece. A positioning hole is provided at the position opposite to the grouting steel pipe at the second end of the second annular piece. The other end of the grouting steel pipe passes through the positioning hole and extends into the sealed cavity of the second annular piece. A grouting hole is provided in the steel shell at the top of the annular component. By designing the annular component as a hollow steel shell structure and providing a reinforcing frame within the steel shell, the supporting strength of the steel shell serving as the annular piece is ensured, while the weight of the annular piece is greatly reduced, facilitating the hoisting of the annular piece. Furthermore, when two adjacent annular components are joined, they can be positioned using grouting steel pipes and positioning holes, facilitating the connection of the ring segments during hoisting. Additionally, the two ends of the grouting steel pipe are located in two adjacent sealing cavities, connecting the sealing cavities of two adjacent steel shells. Therefore, after assembling the ungrouted steel shells into an annular component, grout can be injected into each steel shell through the grouting holes at the top of the annular component, greatly facilitating the grouting operation. Moreover, since the two ends of the grouting steel pipe are inserted into two adjacent steel shells, after grouting, the grouting steel pipe also enhances the connection strength between the two adjacent steel shells. Therefore, the annular component of this invention not only reduces the weight during annular assembly but also facilitates the assembly of each annular segment, simplifying construction and ensuring the connection strength between the annular segments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the ring-shaped component in Embodiment 1 of the present invention; Figure 2 for Figure 1 Cross-sectional view at point AA; Figure 3 tail Figure 1 Enlarged view of a section at point C; Figure 4 This is a schematic diagram of the ring-shaped component in Embodiment 2 of the present invention; Figure 5 This is a schematic diagram of the structure of the first bottom ring plate in Embodiment 2 of the present invention; In the figure, 1 is the steel shell, 11 is the first ring piece, 111 is the limiting protrusion, 12 is the second ring piece, 121 is the limiting groove, 2 is the reinforcing skeleton, 3 is the grouting steel pipe, 41 is the bottom shell, 411 is the first bottom shell, 412 is the second bottom shell, 42 is the first side shell, 43 is the top shell, 431 is the first top shell, 432 is the second top shell, and 44 is the second side shell. Detailed Implementation

[0016] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0017] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "top," "bottom," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. It should be understood that the terms "first," "second," etc., are used in this invention to describe various information, but this information should not be limited to these terms; these terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this invention, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information.

[0018] Example 1 like Figures 1 to 3As shown, a preferred embodiment of the annular component of the present invention includes multiple steel shells 1 with sealing cavities. The steel shells 1 are sequentially spliced ​​to form an annular component. Each sealing cavity is fixedly provided with a reinforcing skeleton 2. Specifically, the periphery of each reinforcing skeleton 2 is fixed to the cavity wall of each sealing cavity. Two adjacent steel shells 1 are respectively a first annular piece 11 and a second annular piece 12. The first end of the first annular piece 11 is spliced ​​with the second end of the second annular piece 12. A grouting steel pipe 3 communicating with the sealing cavity of the first annular piece 11 is fixedly inserted into the first end of the first annular piece 11. A positioning hole is provided at the position opposite to the grouting steel pipe at the second end of the second annular piece 12. The other end of the grouting steel pipe 3 passes through the positioning hole and extends into the sealing cavity of the second annular piece 12. A grouting hole is provided on the steel shell 1 at the top of the annular component. Specifically, the annular component is designed as a hollow steel shell structure, with a reinforcing frame 2 installed inside the steel shell 1. This ensures the supporting strength of the steel shell 1 as the annular piece while significantly reducing its weight, facilitating its hoisting. Furthermore, adjacent annular components can be positioned using the grouting steel pipe 3 and positioning holes, simplifying the hoisting process. Additionally, the two ends of the grouting steel pipe 3 are located in adjacent sealing cavities, allowing the grouting steel pipe 3 to connect the sealing cavities of the two adjacent steel shells 1. After assembling the individual ungrouted steel shells 1 into a ring-shaped component, grout can be injected into each steel shell 1 through the grouting holes at the top of the ring-shaped component, greatly facilitating the grouting operation. In addition, the two ends of the grouting steel pipe 3 are respectively inserted into two adjacent steel shells 1. After grouting, the grouting steel pipe 3 can also enhance the connection strength of the two adjacent steel shells 1. Therefore, the ring-shaped component of the present invention not only reduces the weight during the assembly of the ring pieces, but also facilitates the assembly of each ring piece, making construction easier, and ensuring the connection strength of the ring pieces.

[0019] Each steel shell 1 comprises multiple steel plates. The steel plates of the same steel shell 1 are sequentially welded together to form a sealed cavity. When the thickness of the steel plate is thin, it is difficult to guarantee the supporting strength of the steel shell 1. When the thickness of the steel plate is thick, it will increase the amount of steel used, thereby increasing the weight of the steel shell 1 and making it inconvenient to hoist the steel shell 1. In this embodiment, the thickness of each steel plate is greater than or equal to 5mm and less than or equal to 7mm, which not only guarantees the supporting strength of the steel shell 1, but also makes the weight of the steel shell 1 easy to hoist.

[0020] In this embodiment, each reinforcing frame 2 includes multiple cross-arranged reinforcing bars, and the ends of each reinforcing bar are welded to the inner wall of the sealing cavity where the reinforcing bar is located. Specifically, since the volume of a single steel shell 1 as a ring is relatively large, in this embodiment, the steel shell 1 is set as a multiple steel plate welded together, which is convenient for processing and can simultaneously weld the steel plates and the reinforcing frame 2 of the steel shell 1. Specifically, when welding the steel shell 1, the side wall of the steel shell 1 can be set as multiple steel plates spliced ​​from bottom to top. After welding the bottom steel plate and before welding the upper steel plate, the reinforcing bars connected to the bottom steel plate are welded to the side wall of the bottom steel plate. Then the steel plate above the bottom steel plate is welded, and the steel plates and reinforcing bars are welded layer by layer.

[0021] To further improve the supporting strength of the reinforcing frame 2, in this embodiment, the intersections of the reinforcing steel bars in the same sealed cavity are all tied or welded for fixation.

[0022] To facilitate the splicing of adjacent steel shells 1, in this embodiment, the first end of the first annular piece 11 is provided with a limiting protrusion 111, and the first end of the grouting steel pipe 3 is fixedly inserted into the top of the limiting protrusion 111. The second end of the second annular piece 12 is provided with a limiting groove 121 that matches the limiting protrusion 111, and the positioning hole is provided at the bottom of the limiting groove 121. The limiting protrusion 111 and the limiting groove 121 not only serve to position the two adjacent steel shells 1, but also prevent shear misalignment between the two steel shells 1 after docking. Placing the grouting steel pipe 3 on top of the limiting protrusion 111 enhances the shear resistance of the top of the limiting protrusion 111 and the bottom of the limiting groove 121. Moreover, after grouting into each sealing cavity, the grouting steel pipe 3 will be filled with concrete grout, further improving the connection strength between the two adjacent steel shells 1.

[0023] To facilitate docking between two adjacent steel shells 1, in this embodiment, the cross-section of each limiting groove 121 is arranged in an isosceles trapezoidal shape.

[0024] In this embodiment, a plurality of grouting steel pipes 3 are spaced apart at the first end of the first ring 11, and positioning holes are provided at the second end of the second ring 12 at positions opposite to each grouting steel pipe 3; the end of each grouting steel pipe 3 away from each first ring 11 is respectively inserted into each positioning hole. Specifically, the number of grouting steel pipes 3 is determined according to the grouting requirements and the connection strength between two adjacent steel shells 1. The more grouting steel pipes 3 there are, the more conducive it is to the flow of concrete grout in the two adjacent steel shells 1, and the higher the strength between the two adjacent steel shells 1.

[0025] like Figure 1As shown, in this embodiment, the same annular component includes four steel shells 1, which are located at the bottom, left, top, and right sides of the annular component, respectively. A grouting hole is located at the top of the steel shell 1 at the top of the annular component. The sealing cavities of the steel shell 1 on the left and right sides of the annular component are connected to the sealing cavity of the steel shell 1 at the top of the annular component via vertically aligned grouting pipes 3. The two ends of the sealing cavity of the steel shell 1 at the bottom of the annular component are connected to the sealing cavities of the steel shell 1 on the left and right sides of the annular component via vertically aligned grouting pipes 3, respectively. After the steel shells 1 of the same annular component are assembled, grout is injected into the sealing cavity of the top steel shell 1 through the grouting hole, thus completing the grouting operation for each sealing cavity of the steel shell 1 of the same annular component, facilitating the grouting process.

[0026] An embodiment of a construction method for the above-mentioned ring-shaped component includes the following steps: Step S1: Assemble each steel shell 1 in sequence to form a ring-shaped component; Step S2: Grout is injected into the sealing cavity of each steel shell 1 through the grouting hole located at the top of the annular component; In step S1, splicing the steel shells 1 includes inserting the grouting steel pipe 3 fixed on one of the two adjacent steel shells 1 into the positioning hole of the other steel shell 1.

[0027] Specifically, the assembly process of the ring-shaped component follows the principle of "assembling from bottom to top, step by step." First, the steel shell 1 located at the bottom of the ring-shaped component is hoisted, followed by the steel shell 1 located on the left and right sides of the ring-shaped component, and finally the steel shell 1 located at the top of the ring-shaped component. After the steel shell 1 at the top of the ring-shaped component is assembled, grouting begins. The concrete grout injected into the shell at the top of the ring-shaped component flows downward under gravity and fills each steel shell 1 sequentially from bottom to top through each grouting steel pipe 3. In this embodiment, the diameter of the grouting hole of the steel shell 1 at the top of the ring-shaped component is larger than the outer diameter of the grouting pipe, so that the grouting hole can be used for both grouting and air venting, as well as for observing whether the concrete grout is full.

[0028] Example 2 like Figure 4 , Figure 5As shown, the difference between this embodiment and Embodiment 1 is that the bottom shell 41 of the annular component is formed by splicing a first bottom shell 411 and a second bottom shell 412, and the top shell 43 of the annular component is formed by splicing a first top shell 431 and a second top shell 432. The lower end of the first top shell 431 is connected to the top of the first side shell 42 through a grouting steel pipe 3, the bottom of the first side shell 42 is connected to the top of the first bottom shell 411 through a grouting steel pipe 3, the lower end of the second top shell 432 is connected to the top of the second side shell 44 through a grouting steel pipe 3, and the bottom of the second side shell 44 is connected to the top of the second bottom shell 412 through a grouting steel pipe 3. The first top shell 431 is provided with a first grouting hole at its top, and the second top shell 432 is provided with a second grouting hole at its top. Grouting into the first grouting hole can complete grouting of the first top shell 431, the first side shell 42 and the first bottom shell 411; grouting into the second grouting hole can grout the second top shell 432, the second side shell 44 and the second bottom shell 412.

[0029] In summary, the annular component of the present invention includes a plurality of steel shells 1 with sealing cavities, the steel shells 1 being sequentially spliced ​​to form the annular component, each sealing cavity having a reinforcing skeleton 2, the periphery of each reinforcing skeleton 2 being fixed to the cavity wall of each sealing cavity; two adjacent steel shells 1 are respectively a first annular piece 11 and a second annular piece 12, the first end of the first annular piece 11 being spliced ​​to the second end of the second annular piece 12, the first end of the first annular piece 11 being fixedly inserted with a grouting steel pipe 3 communicating with the sealing cavity of the first annular piece 11, the second end of the second annular piece 12 having a positioning hole at a position opposite to the grouting steel pipe, the other end of the grouting steel pipe 3 passing through the positioning hole and extending into the sealing cavity of the second annular piece 12; the steel shell 1 located at the top of the annular component has a grouting hole. Specifically, the annular component is designed as a hollow steel shell structure, with a reinforcing frame 2 installed inside the steel shell 1. This ensures the supporting strength of the steel shell 1 as the annular piece while significantly reducing its weight, facilitating its hoisting. Furthermore, adjacent annular components can be positioned using the grouting steel pipe 3 and positioning holes, simplifying the hoisting process. Additionally, the two ends of the grouting steel pipe 3 are located in adjacent sealing cavities, allowing the grouting steel pipe 3 to connect the sealing cavities of the two adjacent steel shells 1. After assembling the individual ungrouted steel shells 1 into a ring-shaped component, grout can be injected into each steel shell 1 through the grouting holes at the top of the ring-shaped component, greatly facilitating the grouting operation. Furthermore, the two ends of the grouting steel pipe 3 are respectively inserted into two adjacent steel shells 1, and after grouting, the grouting steel pipe 3 can also enhance the connection strength between the two adjacent steel shells 1. Therefore, the ring-shaped component of this invention not only reduces the weight during ring assembly but also facilitates the assembly of each ring, simplifying construction and ensuring the connection strength of the ring components. The ring-shaped component of this invention achieves lightweight precast rings and one-time on-site casting, solving the problems of excessive weight, difficult manufacturing, transportation, and hoisting of existing precast rings. Since the rings are cast and cured on-site in one go, compared to the traditional construction method of precasting and binding steel cages in sections, production efficiency is greatly improved, while saving the time spent transporting the manufactured and cured rings to the site.

[0030] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A ring-shaped component, characterized in that, It includes multiple steel shells (1) with sealed cavities, each of the steel shells (1) is spliced ​​together in sequence, and each of the sealed cavities is fixedly provided with a reinforcing frame (2). Let the two adjacent steel shells (1) be a first ring (11) and a second ring (12), respectively. The first end of the first ring (11) is fixedly inserted with a grouting steel pipe (3) communicating with the sealing cavity of the first ring (11). The second end of the second ring (12) is provided with a positioning hole at the position opposite to the grouting steel pipe (3). The other end of the grouting steel pipe (3) passes through the positioning hole and extends into the sealing cavity of the second ring (12). The steel shell (1) located at the top of the ring component is provided with a grouting hole. The two ends of the grouting steel pipe (3) are respectively inserted into the two adjacent steel shells. In the shell (1), after grouting, the grouting steel pipe (3) can also enhance the connection strength of two adjacent steel shells (1); each of the reinforcing skeletons (2) includes multiple reinforcing bars arranged in a cross pattern, and the ends of each reinforcing bar are welded to the inner wall of the sealing cavity where each reinforcing bar is located; the side wall of the steel shell (1) is a series of steel plates spliced ​​from bottom to top. After welding the bottom steel plate and before welding the upper steel plate, each reinforcing bar connected to the bottom steel plate is welded to the side wall of the bottom steel plate, and then the steel plate above the bottom steel plate is welded, and the steel plates and reinforcing bars are welded layer by layer.

2. The ring-shaped component according to claim 1, characterized in that, All reinforcing bars within the same sealed cavity are tied or welded at their intersections.

3. The ring-shaped component according to claim 1, characterized in that, The first end of the first ring piece (11) is provided with a limiting protrusion (111), and the first end of the grouting steel pipe (3) is fixedly inserted into the top of the limiting protrusion (111). The second end of the second ring piece (12) is provided with a limiting groove (121) that matches the limiting protrusion (111), and the positioning hole is provided at the bottom of the limiting groove (121).

4. The ring-shaped component according to claim 3, characterized in that, The cross-sections of each of the limiting grooves (121) are arranged in an isosceles trapezoidal shape.

5. The ring-shaped component according to claim 1, characterized in that, The first end of the first ring (11) is provided with a plurality of grouting steel pipes (3) spaced apart, and the second end of the second ring (12) is provided with positioning holes at the position opposite to each of the grouting steel pipes (3); the end of each grouting steel pipe (3) away from each of the first ring (11) is respectively inserted into each of the positioning holes.

6. The ring-shaped component according to claim 1, characterized in that, Each of the steel shells (1) includes multiple steel plates. The steel plates of the same steel shell (1) are sequentially welded together to form the sealing cavity. The thickness of each steel plate is greater than or equal to 5 mm and less than or equal to 7 mm.

7. A construction method for a ring-shaped component according to any one of claims 1 to 6, characterized in that, Includes the following steps: Step S1: Assemble each steel shell (1) in sequence to form a ring-shaped component; Step S2: Grout is injected into the sealing cavity of each steel shell (1) through the grouting hole located at the top of the annular member.

8. The construction method of the ring-shaped component according to claim 7, characterized in that, In step S1, splicing the steel shells (1) includes: inserting the grouting steel pipe (3) fixed on one of the two adjacent steel shells (1) into the positioning hole of the other steel shell (1) of the two adjacent steel shells (1).

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