A connection structure for prefabricated components and its construction method

Abstract

This invention relates to the field of prefabricated subway station technology, and in particular to a connection structure for prefabricated components and its construction method. The connection structure for prefabricated components includes a connecting rod, with a first stop at the front end of the connecting rod, and a second stop connected to the rear end of the connecting rod passing through each prefabricated component from front to back. The connecting rod passes through each prefabricated component, greatly increasing its length. On the outer side of the connecting rod, between two adjacent prefabricated components, there are first elastic elements, third stop elements, and second elastic elements that abut from front to back. The front end of each first elastic element abuts against the rear end of the prefabricated component adjacent to its front, and the rear end of each second elastic element abuts against the prefabricated component adjacent to its rear end. The elastic deformation of the connecting rod can be evenly distributed over the entire length of the connecting rod, thereby increasing the allowable elastic deformation of the connecting rod and reducing the risk of plastic deformation of the prefabricated component under tensile force.

Description

Technical Field

[0001] This invention relates to the field of prefabricated subway station technology, and in particular to a connection structure for prefabricated components and its construction method. Background Technology

[0002] Prefabricated construction involves the streamlined production of steel bars and concrete, traditionally used in construction, into prefabricated components in a factory. These components are then assembled on-site, like building blocks, piece by piece. Prefabricated construction enables the factory-based production of building structures. Prefabricated subway stations are a new form of prefabricated construction. 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] The connection structure between two adjacent lining rings is a weak point in prefabricated subway stations. Common connection structures between adjacent lining rings include connecting flanges on both sides of the lining ring and connecting bolts passing through the flanges. Under dynamic and seismic loads on the ground surface, adjacent lining rings will experience significant vibration loads, leading to instantaneous tensile deformation between them. Therefore, the connecting bolts between adjacent lining rings are prone to breakage, which can also cause localized damage to the concrete segments. The inventors discovered that one important reason for the breakage of the connecting bolts connecting adjacent lining rings is the small allowable elastic deformation of the bolts. A key factor contributing to this small allowable elastic deformation is the distance between the nuts and bolts on both sides of the connecting flange. The allowable elastic deformation of the connecting bolt is positively correlated with this distance. Increasing the distance between the nuts and bolts increases the allowable elastic deformation of the connecting bolt, thereby improving the reliability of the longitudinal connection structure of the prefabricated components. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the longitudinal connection structure of existing prefabricated components has a small allowable elastic deformation of the connecting bolts used to connect the lining rings, and the connecting bolts are at high risk of breaking due to plastic deformation when tensile deformation occurs between the lining rings.

[0005] To address the aforementioned technical problems, the present invention aims to provide a connection structure for prefabricated precast components, used to connect multiple precast components arranged sequentially from front to back. The connection structure for prefabricated precast components includes:

[0006] A connecting rod is provided with a first stop on the outer side of its front end, and the rear end of the connecting rod passes through each of the prefabricated components from front to back and is connected to a second stop. Each of the prefabricated components is sandwiched between the first stop and the second stop.

[0007] On the outer side of the connecting rod, at a position between two adjacent prefabricated components, a first elastic member, a third stop member, and a second elastic member are provided in sequence from front to back. The front end of each first elastic member abuts against the rear end of the prefabricated component adjacent to its front, and the rear end of each second elastic member abuts against the prefabricated component adjacent to its rear end.

[0008] As a preferred embodiment, the connecting rod includes a plurality of sub-rods arranged sequentially from front to back, with a threaded sleeve arranged between each pair of adjacent sub-rods. One end of one of the two adjacent sub-rods is screwed into one end of the threaded hole of the threaded sleeve, and the other end of the two adjacent sub-rods is screwed into the other end of the threaded hole of the threaded sleeve.

[0009] As a preferred embodiment, each of the threaded holes of the threaded sleeves is provided with a third elastic element in the middle, and the two ends of the third elastic element respectively abut against the ends of the two adjacent sub-rods.

[0010] As a preferred embodiment, each of the threaded sleeves is provided with a polygonal anti-rotation structure on its outer side, and each of the second elastic elements is provided with a first mounting hole that matches the polygonal anti-rotation structure. Each of the threaded sleeves is respectively disposed in the first mounting hole adjacent to itself.

[0011] As a preferred embodiment, one end of one of the two adjacent prefabricated components is provided with a receiving groove, and the first elastic member, the third stop member, and the second elastic member are all disposed in the receiving groove.

[0012] As a preferred embodiment, at least one of the first stop and the second stop is a nut screwed onto the outside of the connecting rod.

[0013] As a preferred embodiment, each of the third stop components is a nut screwed onto the outside of the connecting rod.

[0014] As a preferred embodiment, an elastic sealing ring is sandwiched between two adjacent prefabricated components.

[0015] A construction method for a connection structure for prefabricated prefabricated components as described above includes the following steps;

[0016] Step S1: Pass the rear end of the connecting rod through the first precast component;

[0017] Step S2: Install a first elastic member and a third stop member at the rear end of the connecting rod, so that the third stop member presses forward against the first elastic member and fixes the third stop member on the connecting rod;

[0018] Step S3: Install the second elastic element and another prefabricated component at the rear end of the connecting rod;

[0019] Step S4: Repeat steps S2 and S3 until all prefabricated components are installed.

[0020] Step S5: Install the second stop at the rear end of the connecting rod.

[0021] As a preferred embodiment, in step S1, the rear end of the first sub-rod is passed through the first prefabricated component;

[0022] Step S2 includes:

[0023] Step S21: Install the first elastic element at the rear end of the first sub-rod;

[0024] Step S22: Screw the third stop member onto the rear end of the first sub-rod.

[0025] Step S23: Connect the threaded sleeve and the second elastic element to the rear end of the first sub-rod.

[0026] Step S24: Connect another sub-rod to the other end of the screw sleeve.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] The present invention provides a connecting structure for prefabricated components, comprising a connecting rod, a first stop being provided on the outer side of the front end of the connecting rod, and a second stop being connected to the rear end of the connecting rod sequentially through each prefabricated component from front to back. Each prefabricated component is sandwiched between the first stop and the second stop. The connecting rod passes through each prefabricated component, greatly increasing the length of the connecting rod. At the position between two adjacent prefabricated components on the outer side of the connecting rod, a first elastic member, a third stop, and a second elastic member are provided sequentially from front to back, with the front end of each first elastic member contacting the rear end of the prefabricated component adjacent to its front. The rear ends of each second elastic element abut against the precast component adjacent to its own rear end. When the connecting rod is subjected to tension and undergoes elastic deformation, the compression of each first or second elastic element allows the connecting rod to move relative to each precast component when it extends, so that the elastic deformation of the connecting rod can be evenly distributed over the entire length of the connecting rod, thereby increasing the allowable elastic deformation of the connecting rod and reducing the risk of plastic deformation of the precast component when subjected to tensile force. The arrangement of the first and second elastic elements can not only clamp each precast component to keep it fixed, but also buffer the vibration of each precast component. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the connection structure for prefabricated components according to the present invention;

[0030] Figure 2 for Figure 1Enlarged view of a section at point C;

[0031] Figure 3 This is a schematic diagram of the structure of the second elastic element;

[0032] In the figure, 100 is a prefabricated component; 101 is a receiving groove; 1 is a connecting rod; 11 is a sub-rod body; 12 is a threaded sleeve; 2 is a first stop; 3 is a second stop; 4 is a first elastic element; 5 is a third stop; 6 is a second elastic element; 61 is a first mounting hole; 62 is a second mounting hole; 63 is a third mounting hole; 7 is a third elastic element; and 8 is an elastic sealing ring. Detailed Implementation

[0033] 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.

[0034] 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.

[0035] The prefabricated component connection structure of the present invention is used to connect a plurality of prefabricated components 100 arranged sequentially from front to back, such as... Figure 1 , Figure 2 , Figure 3 As shown, the connection structure for prefabricated components of the present invention includes:

[0036] The connecting rod 1 has a first stop 2 on the outer side of its front end. The rear end of the connecting rod 1 passes through each prefabricated component 100 from front to back and is connected to a second stop 3. Each prefabricated component 100 is sandwiched between the first stop 2 and the second stop 3.

[0037] On the outer side of the connecting rod 1, at the position between two adjacent precast components 100, there are first elastic members 4, third stop members 5 and second elastic members 6 that abut against each other from front to back. The front end of each first elastic member 4 abuts against the rear end of the precast component 100 adjacent to its front, and the rear end of each second elastic member 6 abuts against the precast component 100 adjacent to its rear end.

[0038] Specifically, the connecting rod 1 is inserted into each precast component 100, which greatly increases the length of the connecting rod 1. When the connecting rod 1 is subjected to tension and undergoes elastic deformation, the compression of each first elastic element 4 or second elastic element 6 allows the connecting rod 1 to move relative to each precast component 100 when it extends, so that the elastic deformation of the connecting rod 1 can be evenly distributed over the entire length of the connecting rod 1, thereby increasing the allowable elastic deformation of the connecting rod 1 and reducing the risk of plastic deformation of the precast component 100 when subjected to tensile force. The arrangement of the first elastic element 4 and the second elastic element 6 can not only clamp each precast component 100 to keep it fixed, but also buffer the vibration of each precast component 100, thereby improving the seismic resistance of each precast component.

[0039] For ease of construction, in this embodiment, the connecting rod 1 includes multiple sub-rods 11 arranged sequentially from front to back. A threaded sleeve 12 is provided between each pair of adjacent sub-rods 11. One end of one of the adjacent sub-rods 11 is screwed into one end of the threaded hole of the threaded sleeve 12, and the other end of the adjacent sub-rods 11 is screwed into the other end of the threaded hole of the threaded sleeve 12. Specifically, each sub-rod 11 is a tensile steel bar with external threads at its end. By configuring the rod 1 as a segmented structure, the length of the rod 1 can be increased synchronously and flexibly when installing various prefabricated components. In other embodiments of the invention, the rod 1 can be configured as a single piece.

[0040] In this embodiment, a third elastic element 7 is provided in the middle of the threaded hole of each threaded sleeve 12. The two ends of the third elastic element 7 abut against the ends of two adjacent sub-rods 11. Specifically, the third elastic element 7 can be a rubber column or a compression spring. The third elastic element can apply preload to the sub-rods 11 located at both ends of the threaded sleeve 12 to prevent loosening between the sub-rods 11 and the threaded sleeve, thereby further improving the stability of the connection structure for the prefabricated components in this embodiment.

[0041] Furthermore, each threaded sleeve 12 has a polygonal anti-rotation structure on its outer side, and each second elastic member 6 has a first mounting hole 61 that matches the polygonal anti-rotation structure. Each threaded sleeve 12 is respectively disposed in the first mounting hole 61 adjacent to itself. Specifically, in this embodiment, the second elastic member 6 is a rubber column, and the first mounting hole 61 is disposed in the rubber column. In use, the threaded sleeve 12 is first inserted into the second elastic member 6. After the first elastic member 4 and the third stop member 5 are installed on the sub-rod 11, the second elastic member 6 together with the threaded sleeve 12 is connected to the end of the sub-rod 11, and then another sub-rod 11 is connected to the other end of the threaded sleeve 12. The second elastic member 6 is in a compressed state and can prevent the threaded sleeve 12 from rotating.

[0042] In this embodiment, one end of one of two adjacent prefabricated components 100 is provided with a receiving groove 101, and the first elastic member 4, the third stop member 5, and the second elastic member 6 are all disposed in the receiving groove 101. Specifically, as shown... Figure 2 , Figure 3 As shown, the second elastic element 6 has a stepped first mounting hole 61 and a second mounting hole 62. The threaded sleeve 12 is disposed in the first mounting hole 61, and the third stop 5 is disposed in the second mounting hole 62. The threaded sleeve 12 also has a third mounting hole 63 for the sub-rod 11 to pass through. Since both the first elastic element 4 and the second elastic element 6 are disposed in the receiving groove 101, in this embodiment, the first elastic element 3 is a rubber pad. When the first elastic element 3 and the second elastic element 6 are compressed, the receiving groove 101 can apply constraint to the outer side of the first elastic element 3 and the second elastic element 6 with larger deformation, thereby improving the compressive strength of the first elastic element 3 and the second elastic element 6, and thus improving the connection strength of the connection structure for prefabricated components. In addition, the second elastic element 6 can also serve to waterproof the connection node between the two sub-rods 11, avoid corrosion of the threaded sleeve and the end of the sub-rod 11, and ensure the reliability of the connection between the sub-rods 11.

[0043] To facilitate clamping of each prefabricated component 100, in this embodiment, at least one of the first stop 2 and the second stop 3 is a nut screwed onto the outside of the connecting rod 1.

[0044] For ease of construction, in this embodiment, each third stop 5 is a nut screwed onto the outside of the connecting rod 1. Pressure can be applied to the first elastic member 3 by rotating the third stop 5. In other embodiments of the invention, the third stop 5 can be a pressure ring sleeved on the outside of the connecting rod 1. After pressing the pressure ring onto the first elastic member 3 using a pressure device, the pressure ring is welded to the connecting rod 1.

[0045] To improve the waterproofing between two adjacent precast components 100, an elastic sealing ring 8 is sandwiched between two adjacent precast components 100.

[0046] A construction method for a connection structure for prefabricated prefabricated components as described above includes the following steps;

[0047] Step S1: Pass the rear end of the connecting rod 1 through the first precast component 100;

[0048] Step S2: Install the first elastic element 4 and the third stop element 5 at the rear end of the connecting rod 1, so that the third stop element 5 pushes forward against the first elastic element 4 and fixes the third stop element 5 on the connecting rod 1.

[0049] Step S3: Install the second elastic element 6 and another prefabricated component 100 at the rear end of the connecting rod 1;

[0050] Step S4: Repeat steps S2 and S3 until all prefabricated components 100 are installed.

[0051] Step S5: Install the second stop 3 at the rear end of the connecting rod 1.

[0052] In step S1, the rear end of the first sub-rod 11 is passed through the first prefabricated component 100.

[0053] Step S2 includes:

[0054] Step S21: Install the first elastic element 4 at the rear end of the first sub-rod 11;

[0055] Step S22: Screw the third stop 5 onto the rear end of the first sub-rod 11;

[0056] Step S23: Connect the threaded sleeve 12 and the second elastic element 6 to the rear end of the first sub-rod 11;

[0057] Step S24: Connect another sub-rod 11 to the other end of the screw sleeve 12.

[0058] In this embodiment, the prefabricated component 11 is a prefabricated subway station lining ring, and the lining ring is made with a pre-embedded tube to create an installation hole for the pole 1 to pass through.

[0059] In summary, the prefabricated component connection structure of the present invention is used to connect multiple prefabricated components 100 arranged sequentially from front to back, such as... Figure 1 , Figure 2As shown, the connecting structure for prefabricated components of the present invention includes a connecting rod 1. A first stop 2 is provided on the outer side of the front end of the connecting rod 1. The rear end of the connecting rod 1 passes through each prefabricated component 100 from front to back and is connected to a second stop 3. Each prefabricated component 100 is sandwiched between the first stop 2 and the second stop 3. A first elastic member 4, a third stop 5, and a second elastic member 6 are provided on the outer side of the connecting rod 1 at the position between two adjacent prefabricated components 100, which abut against each other from front to back. The front end of each first elastic member 4 abuts against the rear end of the prefabricated component 100 adjacent to its front end, and the rear end of each second elastic member 6 abuts against the prefabricated component 100 adjacent to its rear end. The connecting rod 1 is inserted through each precast component 100, which greatly increases the length of the connecting rod 1. When the connecting rod 1 is subjected to tension and undergoes elastic deformation, the compression of each first elastic element 4 or second elastic element 6 allows the connecting rod 1 to move relative to each precast component 100 when it extends. This allows the elastic deformation of the connecting rod 1 to be evenly distributed throughout the entire length of the connecting rod 1, thereby increasing the allowable elastic deformation of the connecting rod 1 and reducing the risk of plastic deformation of the precast component 100 when subjected to tensile force. The arrangement of the first elastic element 4 and the second elastic element 6 can not only clamp each precast component 100 to keep it fixed, but also buffer the vibration of each precast component 100, thereby improving the seismic resistance of each precast component.

[0060] 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 connection structure for prefabricated components, used to connect multiple prefabricated components (100) arranged sequentially from front to back, characterized in that, The connection structure for the prefabricated components includes: A connecting rod (1) is provided with a first stop (2) on the outer side of the front end of the connecting rod (1). The rear end of the connecting rod (1) passes through each of the prefabricated components (100) from front to back and is connected to a second stop (3). Each of the prefabricated components (100) is sandwiched between the first stop (2) and the second stop (3). The outer side of the connecting rod (1) is provided with a first elastic member (4), a third stop member (5), and a second elastic member (6) that abut against each other from front to back at the position between two adjacent prefabricated components (100). The front end of each first elastic member (4) abuts against the rear end of the prefabricated component (100) adjacent to its front end, and the rear end of each second elastic member (6) abuts against the prefabricated component (100) adjacent to its rear end. The connecting rod (1) includes a plurality of sub-rods (11) arranged sequentially from front to back. A threaded sleeve (12) is arranged between two adjacent sub-rods (11). The end of one of the two adjacent sub-rods (11) is screwed into one end of the threaded hole of the threaded sleeve (12), and the end of the other of the two adjacent sub-rods (11) is screwed into the other end of the threaded hole of the threaded sleeve (12). Each of the threaded sleeves (12) has a third elastic element (7) in the middle of its threaded hole. The two ends of the third elastic element (7) abut against the ends of the two adjacent sub-rods (11). Each of the threaded sleeves (12) has a polygonal anti-rotation structure on its outer side, and each of the second elastic members (6) has a first mounting hole (61) that matches the polygonal anti-rotation structure. Each of the threaded sleeves (12) is respectively set in the first mounting hole (61) adjacent to itself. One of the two adjacent prefabricated components (100) is provided with a receiving groove (101) at one end, and the first elastic member (4), the third stop member (5) and the second elastic member (6) are all provided in the receiving groove (101); The second elastic element (6) can also provide waterproofing at the connection node between the two sub-rods (11), preventing corrosion of the threaded sleeve (12) and the ends of the sub-rods (11).

2. The connection structure for prefabricated components according to claim 1, characterized in that, At least one of the first stop (2) and the second stop (3) is a nut screwed onto the outside of the connecting rod (1).

3. The connection structure for prefabricated components according to claim 1, characterized in that, Each of the third stoppers (5) is a nut screwed onto the outside of the connecting rod (1).

4. The connection structure for prefabricated components according to claim 1, characterized in that, An elastic sealing ring (8) is sandwiched between each of the two adjacent prefabricated components (100).

5. A construction method for a connection structure for prefabricated components according to any one of claims 1 to 4, characterized in that, Includes the following steps; Step S1: Pass the rear end of the connecting rod (1) through the first precast component (100); Step S2: Install a first elastic member (4) and a third stop member (5) at the rear end of the connecting rod (1), so that the third stop member (5) presses forward against the first elastic member (4) and fixes the third stop member (5) on the connecting rod (1); Step S3: Install the second elastic element (6) and another prefabricated component (100) at the rear end of the connecting rod (1); Step S4, repeat steps S2 and S3 until all prefabricated components (100) are installed; Step S5: Install the second stop (3) at the rear end of the connecting rod (1).

6. The construction method for the connection structure of prefabricated components according to claim 5, characterized in that: In step S1, the rear end of the first sub-rod (11) is passed through the first prefabricated component (100); Step S2 includes: Step S21: Install the first elastic element (4) at the rear end of the first sub-rod (11); Step S22: Screw the third stop (5) onto the rear end of the first sub-rod (11); Step S23: Connect the threaded sleeve (12) and the second elastic element (6) to the rear end of the first sub-rod (11); Step S24: Connect another sub-rod (11) to the other end of the screw sleeve (12).

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