Smooth and stable floating slab vibration reduction track system

Abstract

The utility model relates to a smooth and stable floating slab vibration reduction track system, which belongs to the technical field of track traffic and comprises a plurality of floating slabs, embedded parts, adapters and vibration isolators, the plurality of floating slabs are arranged along the length direction of a track, every two adjacent floating slabs are connected through a joint limiting structure, and embedded holes are formed in the plurality of floating slabs; the embedded part is embedded in the embedded hole and is of a cylindrical structure, and a thread is arranged on the inner wall of the embedded part; the adapter is of a cylindrical structure, threads are arranged on the outer wall and the inner wall of the adapter, and the threads on the outer wall of the adapter are in threaded connection with the threads on the inner wall of the embedded part; threads are arranged on the outer wall of the vibration isolator and are connected to the threads on the inner wall of the adapter, and the bottom end of the vibration isolator is in contact with the concrete base layer. According to the floating slab vibration reduction track system, the two adjacent floating slabs in the vibration reduction track system are connected and restrained through the joint limiting structures, the vertical, longitudinal and transverse fall between the floating slabs can be effectively limited, and the smoothness and integrity of the floating slab vibration reduction track system are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit, and particularly relates to a smooth and stable floating slab vibration damping track system. Background Technique

[0002] The vibration and noise problems caused by urban rail transit have a non-negligible impact on the lives of residents along the line and even the structural safety of the overlying buildings. The floating slab track bed system is one of the means with the strongest comprehensive performance among many existing vibration damping track design schemes, and has been widely applied in the field of urban rail transit.

[0003] Considering reducing transportation and hoisting costs, shortening the construction period and facilitating installation, precast floating slabs with smaller lengths are widely used in the floating slab vibration damping track system. Since the size and mass of a single slab are reduced, it may lead to an increase in the vertical displacement drop between adjacent slabs, reducing the smoothness and stability of the track. At the same time, because the mass of a single floating slab is reduced, the problem of deteriorated vibration isolation performance may also occur.

[0004] To solve the above technical problems, some manufacturers have developed connection structures for multiple floating slabs that can improve the smoothness and stability of rail transit. For example, a Chinese utility model patent with the patent number CN111155363B and the name "A floating unit slab", and another Chinese utility model patent with the patent number CN111155366A and the name "A floating slab unit track". In the above patents, the mutually adjacent end faces of two adjacent floating slabs are respectively provided with a first splicing surface and a second splicing surface, and the two adjacent floating slabs are connected by splicing the first splicing surface and the second splicing surface. In actual application, the above connection structure is not stable. When the train vibrates through the track, it is extremely easy for two adjacent floating slabs to become separated, leading to serious traffic accidents.

[0005] Therefore, for precast floating slabs with smaller sizes and masses, how to improve the smoothness and stability of the floating slab vibration damping track system by increasing the limit structure at the slab joints and a high-precision vibration isolator height adjustment method is an urgent problem to be solved by those skilled in the art. Content of the Utility Model

[0006] The utility model provides a smooth and stable floating slab vibration damping track system to solve the technical problems of unstable and unsmooth connection structures between adjacent floating slabs in the existing vibration damping track system.

[0007] The technical solution of the utility model to solve the above technical problems is as follows: A smooth and stable floating slab vibration damping track system includes: multiple floating slabs, embedded parts, adapter parts and vibration isolators.

[0008] A plurality of the floating slabs are placed above the concrete base along the length direction of the track, and two adjacent floating slabs are connected by a joint limiting structure. A plurality of embedded holes are provided on each of the floating slabs; the embedded parts are embedded in the embedded holes. The embedded parts are of a cylindrical structure and the inner wall thereof is provided with threads; the adapter is of a cylindrical structure and the outer wall and the inner wall thereof are both provided with threads. The outer wall thread of the adapter is threadedly connected to the inner wall thread of the embedded part; the outer wall of the vibration isolator is provided with threads and is threadedly connected to the inner wall thread of the adapter, and the bottom end of the vibration isolator contacts the concrete base.

[0009] The beneficial effects of the present utility model are as follows:

[0010] 1. By using the joint limiting structure to connect and restrain two adjacent floating slabs in the vibration damping track system, the vertical, longitudinal and lateral drops between the floating slabs can be effectively restricted, and the smoothness and integrity of the floating slab vibration damping track system can be improved;

[0011] 2. By threadedly connecting the outer wall thread of the vibration isolator to the inner wall thread of the adapter, the jacking height of the vibration isolator can be adjusted steplessly and precisely, ensuring the high smoothness and high stability characteristics of the floating slab vibration damping track system.

[0012] On the basis of the above technical solution, the present utility model can be further improved as follows.

[0013] Further, the joint limiting structure includes positioning blocks. Positioning grooves are provided on the mutually adjacent end faces of two connected floating slabs, and the positioning grooves penetrate through the top and bottom ends of two adjacent floating slabs; the positioning blocks are embedded in the two positioning grooves.

[0014] The beneficial effect of adopting the above is: by embedding the positioning blocks in the two positioning grooves, the connection strength between adjacent floating slabs is improved.

[0015] Further, the joint limiting structure includes shear hinges. Countersunk holes are provided on the plate surfaces of two adjacent floating slabs; the shear hinges are fixed on the two countersunk holes.

[0016] The beneficial effect of adopting the above is:

[0017] 1. By connecting the shear hinges to the countersunk holes of two adjacent floating slabs, the connection strength between two adjacent floating slabs can be enhanced;

[0018] 2. By connecting the shear hinge + positioning block to two adjacent floating slabs, the connection strength between two adjacent floating slabs can be enhanced.

[0019] Furthermore, the joint limiting structure includes a wet joint. The adjacent ends of two adjacent floating slabs are spaced apart by a predetermined distance and both extend the embedded steel bars. The wet joint is disposed on the outer peripheral side of the embedded steel bars and within the predetermined distance, and the opposite sides of the wet joint are respectively connected to the adjacent end faces of the two adjacent floating slabs.

[0020] The beneficial effect of the above is as follows: First, arrange at a predetermined distance between two adjacent floating slabs, and then pour concrete between the two adjacent floating slabs to form a wet joint, which can form an integral structure of the two adjacent floating slabs and improve the connection strength between the adjacent floating slabs.

[0021] Furthermore, the longitudinal section of the wet joint is a T-shaped structure.

[0022] Furthermore, it further includes a positioning shaft, and the positioning shaft is fixed to the top end of the concrete base; the bottom end of the vibration isolator is fixed to the positioning shaft.

[0023] Furthermore, it further includes a cover. The outer wall of the cover is provided with threads and is threadedly connected to the threads on the inner wall of the embedded part corresponding to the upper part of the vibration isolator, and the bottom end of the cover contacts the top end of the adapter.

[0024] The beneficial effect of the above is as follows: Thread the cover to the upper part of the vibration isolator and connect it to the embedded part. Since the bottom end of the cover contacts the top end of the adapter, the stability, firmness and reliability of the adapter can be improved.

[0025] Furthermore, the threads at the upper end of the inner wall of the embedded part are opposite to the threads at the lower end of the inner wall thereof; the outer wall threads of the cover match the threads at the upper end of the inner wall of the embedded part, and the outer wall threads of the adapter match the threads at the lower end of the inner wall of the embedded part; the outer wall threads of the cover are opposite to the outer wall threads of the adapter.

[0026] The beneficial effect of the above is as follows: The cover and the adapter are threadedly connected to the embedded part in opposite rotation directions, which can prevent the adapter from undergoing relative translational movement in the vertical, horizontal and longitudinal directions, and relative rotation in the horizontal and longitudinal directions, and improve the firmness of the adapter. Description of the Drawings

[0027] Figure 1 It is a three-dimensional structural schematic diagram of the connection of the positioning block in a smooth and stable floating slab vibration damping track system of the present utility model;

[0028] Figure 2 It is a top view structural schematic diagram of the connection of the positioning block in a smooth and stable floating slab vibration damping track system of the present utility model;

[0029] Figure 3Schematic front view sectional structure diagram of the connection of the positioning block in a smooth and stable floating slab vibration damping track system of the present utility model;

[0030] Figure 4 Schematic three-dimensional structure diagram of the connection of shear hinge type 1 in a smooth and stable floating slab vibration damping track system of the present utility model;

[0031] Figure 5 Schematic top view structure diagram of the connection of shear hinge type 1 in a smooth and stable floating slab vibration damping track system of the present utility model;

[0032] Figure 6 Schematic front view sectional structure diagram of the connection of shear hinge type 1 in a smooth and stable floating slab vibration damping track system of the present utility model;

[0033] Figure 7 Schematic three-dimensional structure diagram of the connection of shear hinge type 2 in a smooth and stable floating slab vibration damping track system of the present utility model;

[0034] Figure 8 Schematic top view structure diagram of the connection of shear hinge type 2 in a smooth and stable floating slab vibration damping track system of the present utility model;

[0035] Figure 9 Schematic front view sectional structure diagram of the connection of shear hinge type 2 in a smooth and stable floating slab vibration damping track system of the present utility model;

[0036] Figure 10 Schematic three-dimensional structure diagram of the connection of shear hinge + positioning block in a smooth and stable floating slab vibration damping track system of the present utility model;

[0037] Figure 11 Schematic top view structure diagram of the connection of shear hinge + positioning block in a smooth and stable floating slab vibration damping track system of the present utility model;

[0038] Figure 12 Schematic front view sectional structure diagram of the connection of shear hinge + positioning block in a smooth and stable floating slab vibration damping track system of the present utility model;

[0039] Figure 13 Schematic three-dimensional structure diagram of the wet joint connection in a smooth and stable floating slab vibration damping track system of the present utility model;

[0040] Figure 14 Schematic top view structure diagram of the wet joint connection in a smooth and stable floating slab vibration damping track system of the present utility model;

[0041] Figure 15 Schematic front view sectional structure diagram of the wet joint connection in a smooth and stable floating slab vibration damping track system of the present utility model;

[0042] Figure 16 This is a three-dimensional structural schematic diagram of a shear hinge in a smooth and stable floating slab vibration isolation track system of the present utility model.

[0043] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0044] 1. Floating slab, 11. Positioning groove, 12. Countersunk head hole, 13. Fixing hole, 2. Embedded part, 3. Adapter, 4. Vibration isolator, 5. Joint limit structure, 51. Positioning block, 52. Shear hinge, 53. Wet joint, 6. Concrete base layer, 7. Positioning shaft, 8. Cover. Specific embodiments

[0045] The principles and features of the present utility model will be described below with reference to the attached drawings. The examples given are only for explaining the present utility model and are not intended to limit the scope of the present utility model.

[0046] Example 1, as Figures 1 - 3 shown, a smooth and stable floating slab vibration isolation track system includes: multiple floating slabs 1, a joint limit structure 5, an embedded part 2, an adapter 3, and a vibration isolator 4.

[0047] The multiple floating slabs 1 are placed above the concrete base layer 6 along the length direction of the track, and positioning grooves 11 are provided on the end faces of two adjacent floating slabs 1 that are close to each other. The positioning grooves 11 penetrate through the top and bottom ends of the adjacent two floating slabs 1. Embedded holes are provided on the multiple floating slabs 1; the joint limit structure 5 includes a positioning block 51, and the positioning block 51 is embedded in the two positioning grooves 11; the embedded part 2 is embedded in the embedded hole, and the embedded part 2 is of a cylindrical structure and its inner wall is provided with threads; the adapter 3 is of a cylindrical structure and its outer wall and inner wall are both provided with threads, and the outer wall thread of the adapter 3 is threadedly connected to the inner wall thread of the embedded part 2; the outer wall of the vibration isolator 4 is provided with threads and is threadedly connected to the inner wall thread of the adapter 3, and the bottom end of the vibration isolator 4 contacts the concrete base layer 6.

[0048] Example 2, as Figures 4 - 6 shown, a smooth and stable floating slab vibration isolation track system includes: multiple floating slabs 1, a joint limit structure 5, an embedded part 2, an adapter 3, and a vibration isolator 4.

[0049] A plurality of floating slabs 1 are placed above the concrete base layer 6 along the length direction of the track, and countersunk holes 12 are provided on the surfaces of two adjacent floating slabs 1. Embedded holes are provided on the plurality of floating slabs 1; the joint limiting structure 5 includes shear hinges 52, and the shear hinges 52 are fixed in the countersunk holes 12; the embedded parts 2 are embedded in the embedded holes, the embedded parts 2 are of a cylindrical structure and the inner wall thereof is provided with threads; the adapter 3 is of a cylindrical structure and the outer wall and the inner wall thereof are both provided with threads, and the outer wall thread of the adapter 3 is threadedly connected to the inner wall thread of the embedded part 2; the outer wall of the vibration isolator 4 is provided with threads and is threadedly connected to the inner wall thread of the adapter 3, and the bottom end of the vibration isolator 4 contacts the concrete base layer 6.

[0050] Embodiment 3, as Figures 7 - 9 shown, a smooth and stable floating slab vibration isolation track system, comprising: a plurality of floating slabs 1, a joint limiting structure 5, embedded parts 2, adapters 3 and vibration isolators 4,

[0051] A plurality of floating slabs 1 are placed above the concrete base layer 6 along the length direction of the track, and countersunk holes 12 are provided on the surfaces of two adjacent floating slabs 1. Fixing holes 13 are provided on the surfaces of two adjacent floating slabs 1, fixing grooves are provided on the sides of the two fixing holes 13, and embedded holes are provided on the plurality of floating slabs 1; the joint limiting structure 5 includes at least four shear hinges 52, two shear hinges 52 are fixed in the countersunk holes 12, and two shear hinges 52 are fixed in the two fixing grooves; the embedded parts 2 are embedded in the embedded holes, the embedded parts 2 are of a cylindrical structure and the inner wall thereof is provided with threads; the adapter 3 is of a cylindrical structure and the outer wall and the inner wall thereof are both provided with threads, and the outer wall thread of the adapter 3 is threadedly connected to the inner wall thread of the embedded part 2; the outer wall of the vibration isolator 4 is provided with threads and is threadedly connected to the inner wall thread of the adapter 3, and the bottom end of the vibration isolator 4 contacts the concrete base layer 6.

[0052] Embodiment 4, as Figures 10 - 12 shown, a smooth and stable floating slab vibration isolation track system, comprising: a plurality of floating slabs 1, a joint limiting structure 5, embedded parts 2, adapters 3 and vibration isolators 4,

[0053] A plurality of floating slabs 1 are placed above the concrete base layer 6 along the length direction of the track, and countersunk holes 12 are provided on the surfaces of two adjacent floating slabs 1. Positioning grooves 11 are provided on the end faces of two connected floating slabs 1 close to each other. The positioning grooves 11 penetrate through the top and bottom ends of two adjacent floating slabs 1. Embedded holes are provided on a plurality of floating slabs 1; the joint limiting structure 5 includes a positioning block 51 and a shear hinge 52. The positioning block 51 is embedded in the two positioning grooves 11, and the shear hinge 52 is fixed on the countersunk hole 12; the embedded part 2 is embedded in the embedded hole. The embedded part 2 is of a cylindrical structure and its inner wall is provided with threads; the adapter 3 is of a cylindrical structure and its outer wall and inner wall are both provided with threads. The outer wall thread of the adapter 3 is threadedly connected to the inner wall thread of the embedded part 2; the outer wall of the vibration isolator 4 is provided with threads and is threadedly connected to the inner wall thread of the adapter 3. The bottom end of the vibration isolator 4 contacts the concrete base layer 6.

[0054] Embodiment 5, as Figures 13 - 15 shown, a smooth and stable floating slab vibration isolation track system includes: a plurality of floating slabs 1, a joint limiting structure 5, an embedded part 2, an adapter 3 and a vibration isolator 4,

[0055] A plurality of floating slabs 1 are placed above the concrete base layer 6 along the length direction of the track, and the ends of two adjacent floating slabs 1 close to each other are separated by a predetermined distance. The ends of two adjacent floating slabs close to each other both extend out of embedded steel bars. Embedded holes are provided on a plurality of floating slabs 1; the joint limiting structure 5 includes a wet joint 53 which is arranged on the outer peripheral side of the embedded steel bar and within the predetermined distance. The opposite sides of the wet joint 53 are respectively connected to the end faces of two adjacent floating slabs 1 close to each other; the embedded part 2 is embedded in the embedded hole. The embedded part 2 is of a cylindrical structure and its inner wall is provided with threads; the adapter 3 is of a cylindrical structure and its outer wall and inner wall are both provided with threads. The outer wall thread of the adapter 3 is threadedly connected to the inner wall thread of the embedded part 2; the outer wall of the vibration isolator 4 is provided with threads and is threadedly connected to the inner wall thread of the adapter 3. The bottom end of the vibration isolator 4 contacts the concrete base layer 6.

[0056] Embodiment 6, on the basis of the technical solutions of the above Embodiments 2, 3 and 5, a positioning shaft 7 is added. The positioning shaft 7 is fixed on the top end of the concrete base layer 6; the bottom end of the vibration isolator 4 is fixed on the positioning shaft 7.

[0057] Embodiment 7, on the basis of the technical solutions of the above Embodiments 1-5, a cover 8 is added. The outer wall of the cover 8 is provided with threads and is threadedly connected to the inner wall thread of the embedded part 2 corresponding to the upper part of the vibration isolator 4. The bottom end of the cover 8 contacts the top end of the adapter 3.

[0058] Embodiment 8. On the basis of Embodiment 7, the thread direction of the upper end of the inner wall of the embedded part 2 is opposite to that of the lower end of its inner wall; the external thread of the cover 8 matches the thread of the upper end of the inner wall of the embedded part 2, and the external thread of the adapter 3 matches the thread of the lower end of the inner wall of the embedded part 2; the external thread of the cover 8 is opposite to the external thread of the adapter 3 in terms of thread direction.

[0059] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A smooth and stable floating plate vibration reduction track system, characterized in that: include: A plurality of floating plates (1), wherein the plurality of floating plates (1) are placed above a concrete base layer (6) along the length direction of the track and two adjacent floating plates (1) are connected via a joint limiting structure (5), and pre-buried holes are provided on the plurality of floating plates (1); An embedded part (2), the embedded part (2) is embedded in the embedded hole, the embedded part (2) is a cylindrical structure and its inner wall is provided with threads; The adapter (3) is a cylindrical structure and has threads on its outer wall and inner wall, and the threads on the outer wall of the adapter (3) are threadedly connected to the threads on the inner wall of the embedded part (2); A vibration isolator (4), wherein the outer wall of the vibration isolator (4) is provided with threads and is threadedly connected to the inner wall threads of the adapter (3), and the bottom end of the vibration isolator (4) is in contact with the concrete base layer (6).

2. A smooth and stable floating plate vibration reduction track system according to claim 1, characterized in that: The joint limiting structure (5) comprises a positioning block (51), and the end surfaces of the two connected floating plates (1) that are close to each other are each provided with a positioning groove (11), and the positioning groove (11) passes through the top and bottom ends of the two adjacent floating plates (1); the positioning block (51) is embedded in the two positioning grooves (11).

3. A smooth and stable floating plate vibration reduction track system according to claim 1 or 2, characterized in that: The joint limiting structure (5) comprises a shear hinge (52), and countersunk holes (12) are provided on the plate surfaces of two adjacent floating plates (1); the shear hinge (52) is fixed on the two countersunk holes (12).

4. A smooth and stable floating plate vibration reduction track system according to claim 1 or 2, characterized in that: The joint limiting structure (5) comprises a shear hinge (52), and the plate surfaces of two adjacent floating plates (1) are each provided with a fixing hole (13), and the sides of the two fixing holes (13) are each provided with a fixing groove; the shear hinge (52) is fixed in the two fixing grooves.

5. A smooth and stable floating plate vibration reduction track system according to claim 1, characterized in that: The joint limiting structure (5) comprises a wet joint (53), and the end portions of two adjacent floating plates (1) that are close to each other are separated by a predetermined distance and both extend out of the embedded steel bars; the wet joint (53) is included on the outer peripheral side of the embedded steel bars and is placed within the predetermined distance, and the opposite sides of the wet joint (53) are respectively connected to the end surfaces of the two adjacent floating plates (1) that are close to each other.

6. A smooth and stable floating plate vibration reduction track system according to claim 5, characterized in that: The longitudinal section of the wet joint (53) is a T-shaped structure.

7. A smooth and stable floating plate vibration reduction track system according to claim 1, characterized in that: It also comprises a positioning shaft (7), wherein the positioning shaft (7) is fixed on the top end of the concrete base layer (6); and the bottom end of the vibration isolator (4) is fixed on the positioning shaft (7).

8. The smooth and stable floating plate vibration reduction track system according to claim 1, characterized in that: It also comprises a cover (8), the outer wall of which is provided with threads and is connected to the threads on the inner wall of the embedded part (2) corresponding to the upper threads of the vibration isolator (4), and the bottom end of the cover (8) is in contact with the top end of the adapter (3).

9. A smooth and stable floating plate vibration reduction track system according to claim 8, characterized in that: The threads on the upper end of the inner wall of the embedded component (2) are in opposite directions to the threads on the lower end of the inner wall; the threads on the outer wall of the cover (8) match the threads on the upper end of the inner wall of the embedded component (2); the threads on the outer wall of the adapter (3) match the threads on the lower end of the inner wall of the embedded component (2); the threads on the outer wall of the cover (8) are in opposite directions to the threads on the outer wall of the adapter (3).

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