A connecting structure of a roof wall of a track top air duct and a middle plate

Abstract

A kind of connecting structure of rail top air duct hanging wall and middle plate, including connecting rib, pre-buried pipe and multiple positioning components, pre-buried pipe is vertically installed in middle plate and is filled with grouting material, connecting rib is located in pre-buried pipe and lower end is connected to the upper side of hanging wall, upper end is connected with connecting nut after passing through pre-buried pipe, connecting nut is connected with the upper side of middle plate between pad, the outer circumferential surface of connecting rib is connected with multiple side ribs, multiple positioning components are arranged along the length direction of middle plate and abut at the connecting place of hanging wall and middle plate.The design is positioned to hanging wall by positioning component, so as to improve positioning accuracy, reduce installation error;By setting connecting rib and pre-buried pipe, pre-buried pipe is installed in middle plate, connecting rib is fixed by connecting nut after passing through middle plate, grouting is carried out in pre-buried pipe after fixing, to realize the connection of hanging wall and middle plate, the connecting strength is high, and the structure stability is good;By setting side rib, the bearing capacity of connecting rib can be improved.

Description

Technical Field

[0001] This utility model relates to the field of track-top ventilation duct construction technology, and in particular to a connection structure between the track-top ventilation duct hanging wall and the middle plate. Background Technology

[0002] The track-top ventilation duct, also known as the train-top exhaust duct, is an important internal structural component of the subway station ventilation system, suspended at the junction of the station's central slab and the structural side walls. Currently, track-top ventilation ducts are mainly divided into cast-in-place reinforced concrete track-top ventilation ducts and precast ventilation ducts.

[0003] Cast-in-place reinforced concrete track-top ventilation ducts are durable and offer advantages in noise reduction and fire prevention, making them widely used in current station designs. However, these ducts often require high-altitude work, which is unsafe and inefficient. To avoid this drawback, precast suspended walls are typically used for later assembly. However, current suspended wall installation methods rely solely on a single hoist to lift the wall to contact the main structural slab. Unevenness at the bottom of the slab can easily lead to installation errors, and the weak connection between the suspended wall and the main structural slab results in poor overall structural stability. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects and problems of poor structural stability of the existing track-top air duct, and to provide a connection structure between the track-top air duct hanging wall and the middle plate with higher structural stability.

[0005] To achieve the above objectives, the technical solution of this utility model is: a connection structure between a rail-top air duct hanging wall and a middle plate, including a connecting rib, a pre-embedded pipe, and multiple positioning components. The pre-embedded pipe is vertically installed inside the middle plate, the connecting rib is located inside the pre-embedded pipe, the pre-embedded pipe is filled with grouting material, the lower end of the connecting rib is connected to the upper side of the hanging wall, the upper end of the connecting rib passes through the pre-embedded pipe and is threaded with a connecting nut, a pad is connected between the connecting nut and the upper side of the middle plate, multiple side ribs are connected to the outer circumferential surface of the connecting rib, and multiple positioning components are arranged at intervals along the length direction of the middle plate and abut against the connection between the hanging wall and the middle plate.

[0006] The positioning assembly includes a first steel plate, a second steel plate, and two first bolts. The first and second steel plates are both L-shaped. The vertical parts of the first and second steel plates abut against the left and right sides of the suspended wall, respectively. The horizontal parts of the first and second steel plates abut against the lower side of the middle plate. The bottom ends of the two first bolts pass through the horizontal parts of the first and second steel plates, respectively, and are threaded to the lower side of the suspended wall.

[0007] A second bolt is provided between the vertical parts of the first steel plate and the second steel plate. The bottom end of the second bolt passes through the first steel plate, the wind wall and the second steel plate in sequence and is threaded to a positioning nut. The positioning nut abuts against the vertical part of the second steel plate.

[0008] Both the first steel plate and the second steel plate have limit grooves on their horizontal parts, and the first bolt is movably connected to the limit grooves.

[0009] The vertical length of the second steel plate is less than the vertical length of the first steel plate.

[0010] The upper end of the connecting rib is connected to a limiting component, which is connected to one end of each side rib, and the other end of the side rib is rotatably connected to the connecting rib.

[0011] The limiting component includes a limiting ring and a plurality of iron wires. The limiting ring is sleeved on the upper end of the connecting rib. One end of each of the plurality of iron wires is wrapped around one end of the plurality of side ribs, and the other end of the plurality of iron wires abuts between the limiting ring and the connecting rib.

[0012] A guide cylinder is fitted on the outer circumferential surface of the connecting rib. The side wall of the guide cylinder has multiple guide holes along the circumferential direction. The other end of the wire passes through the guide hole and abuts against the limiting ring and the connecting rib.

[0013] A connecting block is connected to the outer peripheral surface of the connecting rib. An installation groove is provided in the connecting block. A rotating block is rotatably connected in the installation groove. A rotating groove is provided on the upper side of the connecting block. The rotating groove is connected to the installation groove. The other end of the side rib passes through the rotating groove and is connected to the rotating block.

[0014] Multiple connecting ribs are provided, and the multiple connecting ribs are arranged at intervals and connected to the upper side of the middle plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. In the connection structure between the suspended wall and the middle plate of the track-top air duct of this utility model, the suspended wall is positioned by a positioning component before connecting it to the middle plate, thereby improving positioning accuracy and reducing installation errors. By setting connecting ribs and pre-embedded pipes, the pre-embedded pipes are installed inside the middle plate, and the connecting ribs are fixed by connecting nuts after passing through the middle plate. After fixing, grout is injected into the pre-embedded pipes to achieve the connection between the suspended wall and the middle plate. The connection strength is high and the structural stability is good. By setting side ribs, the load-bearing capacity of the connecting ribs can be improved. Therefore, the structure of this utility model has good stability.

[0017] 2. In the connection structure between the track-top air duct hanging wall and the middle plate of this utility model, the positioning component is composed of two steel plates connected together by threaded connections. The steel plates can also be connected to the middle plate to achieve the positioning of the hanging wall. After the hanging wall is installed, the positioning component can be removed and reused, resulting in high utilization. Both the first and second steel plates adopt an L-shaped design, which increases the contact area between the first and second steel plates and the hanging wall / middle plate, resulting in better fixing. The setting of limiting grooves facilitates the adjustment of the position of the first and second steel plates, making the installation process more convenient. Therefore, this utility model is convenient to use, has a good fixing effect, and is easy to install and disassemble.

[0018] 3. In the connection structure between the rail-top ventilation duct wall and the middle plate of this utility model, the side reinforcement can rotate on the connecting reinforcement. When the connecting reinforcement enters the embedded pipe, the side reinforcement can be pulled up by the wire. After the connecting reinforcement is fixed to the middle plate, the wire can be released by releasing the limiting ring. The side reinforcement will rotate downward under its own weight and the weight of the grouting material, causing the wire to slide downward from the guide hole until the side reinforcement contacts the inner wall of the embedded pipe. This design can increase the length of the side reinforcement, thereby improving the load-bearing capacity of the connecting reinforcement. By setting the connecting block and the rotating block to drive the side reinforcement to rotate, the rotation process is more stable. Therefore, the structure of this utility model has good stability and high reliability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a structural schematic diagram of the wall hanging, middle plate, and positioning components in this utility model.

[0021] Figure 3 This is a schematic diagram of the positioning component in this utility model.

[0022] Figure 4 This is a schematic diagram of the limiting component in this utility model.

[0023] Figure 5 This is a structural schematic diagram of the wall hanging, the middle plate, and the embedded pipe in this utility model.

[0024] In the diagram: 1. Middle plate; 2. Hanging wall; 3. Connecting rib; 4. Embedded pipe; 5. Positioning assembly; 51. First steel plate; 52. Second steel plate; 53. First bolt; 54. Second bolt; 55. Positioning nut; 56. Limiting groove; 6. Grouting material; 7. Side rib; 8. Limiting assembly; 81. Limiting ring; 82. Iron wire; 83. Guide cylinder; 84. Guide hole; 9. Connecting nut; 10. Pad; 11. Connecting block; 12. Installation groove; 13. Rotating block; 14. Rotating groove; 15. Grouting groove; 16. Grouting hole; 17. Sealing gasket; 18. Water-stop flange. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Example 1:

[0027] See Figures 1 to 4 A connection structure between a rail-top ventilation duct wall and a middle plate includes a connecting rib 3, a pre-embedded pipe 4, and multiple positioning components 5. The pre-embedded pipe 4 is vertically installed inside the middle plate 1. The connecting rib 3 is located inside the pre-embedded pipe 4, which is filled with grouting material 6. The lower end of the connecting rib 3 is connected to the upper side of the wall 2. The upper end of the connecting rib 3 passes through the pre-embedded pipe 4 and is threadedly connected to a connecting nut 9. A pad 10 is connected between the connecting nut 9 and the upper side of the middle plate 1. Multiple side ribs 7 are connected to the outer circumferential surface of the connecting rib 3. Multiple positioning components 5 are arranged at intervals along the length direction of the middle plate 1 and abut against the connection between the wall 2 and the middle plate 1. Multiple connecting ribs 3 are provided, and the multiple connecting ribs are arranged at intervals and connected to the upper side of the middle plate 1.

[0028] In this embodiment, see Figure 2 One side of the middle plate 1 is provided with a track area side wall. The middle plate 1 and the track area side wall are integrally cast in place. The middle plate 1 and the track area side wall 120 are integrally formed. The hanging wall 2 is set perpendicular to the middle plate 1 and parallel to the track area side wall. It can be understood that each embedded pipe 4 is provided with a connecting bar 3. The two connecting bars 3 are parallel to each other and spaced apart. The number, position and direction of the connecting bars 3 can be set according to actual use needs and are not limited here. By setting at least one connecting bar 3, it helps to ensure the connection effect between the middle plate 1 and the hanging wall 2.

[0029] See Figure 5The bottom end of the embedded pipe 4 extends outward in a trumpet shape. A grouting groove 15 is provided on the top wall of the upper end of the hanging wall 2, and the grouting groove 15 is connected to the bottom of the embedded pipe 4. A grouting hole 16 is connected to one side of the grouting groove 15, and the grouting hole 16 extends to the side wall of the hanging wall 2 so that the hanging wall 2 forms a grout inlet on the side wall. The grouting groove 15 extends to the top wall of the precast hanging wall 20 so that the hanging wall 2 forms a grout outlet on the top wall. At the same time, a sealing gasket 17 is provided between the top wall of the hanging wall 2 and the middle plate 1. A sealing groove is reserved on the top wall of the hanging wall 2, and the sealing gasket 17 is placed in the sealing groove. The sealing gasket 17 can ensure the sealing effect between the hanging wall 2 and the middle plate 1. The sealing gasket 17 is preferably made of rubber and is required to have good sealing and flame retardancy. Grouting material 6 is injected into grouting hole 16 through grout inlet. Grouting material 6 enters grouting groove 15 through grout inlet and then flows into embedded pipe 4 through grout outlet. Grouting material 6 fills grouting groove 15 and embedded pipe 4, thereby enabling further connection between pre-wall 2 and middle plate 1. The grouting body formed by grouting through hanging wall 2 and embedded pipe 4 can bear the corresponding load, making the connection more stable. Water-stop flange 18 is provided on the outer wall of embedded pipe 4. The embedded pipe 4 and water-stop flange 18 are welded together. Water-stop flange 18 can effectively increase the bypass path of leakage water.

[0030] During connection, the hanging wall 2 is first placed in the preset position, and the hanging wall 2 is initially positioned horizontally by the positioning component. Then, the pad 10 is placed on the upper side of the middle plate 1. The hanging wall 2 is lifted so that the connecting rib 3 passes through the embedded pipe 4 and the pad 10 in sequence, and its end is located above the middle plate 1. Then, the connecting nut 9 is screwed into the end of the connecting rib 3 and tightened so that the pad 10 and the connecting nut 9 abut against each other, completing the initial fixation of the hanging wall 2 and the middle plate 1. Then, the grouting material 6 is injected into the grout inlet so that the grouting material 6 fills the grouting groove 15 and the embedded pipe 4, thereby realizing the further connection between the prefabricated hanging wall 2 and the middle plate 1.

[0031] Example 2:

[0032] The basic content is the same as in Example 1, except that:

[0033] See Figure 3 The positioning component 5 includes a first steel plate 51, a second steel plate 52, and two first bolts 53. The first steel plate 51 and the second steel plate 52 are both L-shaped. The vertical parts of the first steel plate 51 and the second steel plate 52 abut against the left and right sides of the hanging wall 2, respectively. The horizontal parts of the first steel plate 51 and the second steel plate 52 abut against the lower side of the middle plate 1. The bottom ends of the two first bolts 53 pass through the horizontal parts of the first steel plate 51 and the second steel plate 52, respectively, and are threaded to the lower side of the hanging wall 2.

[0034] A second bolt 54 is provided between the vertical parts of the first steel plate 51 and the second steel plate 52. The bottom end of the second bolt 54 passes through the first steel plate 51, the wind wall and the second steel plate 52 in sequence and is threaded to a positioning nut 55. The positioning nut 55 abuts against the vertical part of the second steel plate 52.

[0035] Both the first steel plate 51 and the second steel plate 52 have limit grooves 56 on their horizontal parts, and the first bolt 53 is movably connected to the limit grooves 56.

[0036] The vertical length of the second steel plate 52 is less than the vertical length of the first steel plate 51.

[0037] In this embodiment, flexible caulking material can be added between the first steel plate 51, the second steel plate 52 and the hanging wall 2 and the middle plate 1 to improve sealing and structural strength. Before positioning, multiple threaded holes are first reserved on the lower side of the middle plate 1. Then, the first steel plate 51 and the second steel plate 52 are moved to the corresponding threaded holes. Then, the first bolt 53 is screwed into the threaded hole from the limiting groove 56. At the same time, the positions of the first steel plate 51 and the second steel plate 52 are adjusted to achieve the initial positioning of the hanging wall 2. After tightening the connecting nut 9, the first bolt 53 is tightened. Then, the first steel plate 51 and the second steel plate 52 are connected by the second bolt 54. After connection, they are fixed by the positioning nut 55. After grouting is completed, the positioning nut 55 is unscrewed, and the first bolt 53 and the second bolt 54 are loosened to remove the first steel plate 51 and the second steel plate 52.

[0038] Example 3:

[0039] The basic content is the same as in Example 1, except that:

[0040] See Figure 4 The upper end of the connecting rib 3 is connected to a limiting component 8, the limiting component 8 is connected to one end of each side rib 7, and the other end of the side rib 7 is rotatably connected to the connecting rib 3.

[0041] The limiting component 8 includes a limiting ring 81 and a plurality of iron wires 82. The limiting ring 81 is sleeved on the upper end of the connecting rib 3. One end of the plurality of iron wires 82 is respectively wrapped around one end of the plurality of side ribs 7, and the other end of the plurality of iron wires 82 abuts between the limiting ring 81 and the connecting rib 3.

[0042] The outer circumferential surface of the connecting rib 3 is fitted with a guide cylinder 83. The side wall of the guide cylinder 83 is provided with a plurality of guide holes 84 along the circumferential direction. The other end of the wire 82 passes through the guide hole 84 and abuts against the limiting ring 81 and the connecting rib 3.

[0043] The outer peripheral surface of the connecting rib 3 is connected to a connecting block 11. An installation groove 12 is provided in the connecting block 11. A rotating block 13 is rotatably connected in the installation groove 12. A rotating groove 14 is provided on the upper side of the connecting block 11. The rotating groove 14 is connected to the installation groove 12. The other end of the side rib 7 passes through the rotating groove 14 and is connected to the rotating block 13.

[0044] In this embodiment, the side ribs 7 are distributed along the circumferential direction on the outer circumferential surface of the connecting ribs 3. Since the pre-embedded pipe 4 is cylindrical, there are gaps between each side rib 7. In this way, the grouting material 6 injected through the grouting hole will not encounter any obstruction and will fill the inner wall of the pre-embedded pipe 4. The side ribs 7 can be pulled up by the wire 82. The side ribs 7 on different horizontal planes can be arranged at intervals so that each wire 82 will not block each other. Then the wire 82 is passed through the guide hole 84 and fixed to the end of the connecting rib 3 by the limiting ring 81. After the connecting rib 3 passes through the pre-embedded pipe 4, the limiting ring 81 is removed directly. During grouting, the side ribs 7 will rotate downward under their own weight and the weight of the grouting material 6 until the side ribs 7 contact the inner wall of the pre-embedded pipe 4. This can increase the design length of the side ribs 7 and make the overall structural strength of the connecting ribs 7 greater.

Claims

1. A connection structure between a track-top ventilation duct suspended wall and a middle plate, characterized in that: The device includes a connecting rib (3), a pre-embedded pipe (4), and multiple positioning components (5). The pre-embedded pipe (4) is vertically installed inside the middle plate (1). The connecting rib (3) is located inside the pre-embedded pipe (4). The pre-embedded pipe (4) is filled with grouting material (6). The lower end of the connecting rib (3) is connected to the upper side of the hanging wall (2). The upper end of the connecting rib (3) passes through the pre-embedded pipe (4) and is threaded with a connecting nut (9). A pad (10) is connected between the connecting nut (9) and the upper side of the middle plate (1). Multiple side ribs (7) are connected to the outer circumference of the connecting rib (3). Multiple positioning components (5) are arranged at intervals along the length direction of the middle plate (1) and abut against the connection between the hanging wall (2) and the middle plate (1).

2. The connection structure between the track-top ventilation duct wall and the middle plate according to claim 1, characterized in that: The positioning component (5) includes a first steel plate (51), a second steel plate (52), and two first bolts (53). The first steel plate (51) and the second steel plate (52) are both L-shaped. The vertical parts of the first steel plate (51) and the second steel plate (52) abut against the left and right sides of the hanging wall (2), respectively. The horizontal parts of the first steel plate (51) and the second steel plate (52) abut against the lower side of the middle plate (1). The bottom ends of the two first bolts (53) pass through the horizontal parts of the first steel plate (51) and the second steel plate (52) respectively and are threaded to the lower side of the middle plate (1).

3. The connection structure between the track-top ventilation duct wall and the middle plate according to claim 2, characterized in that: A second bolt (54) is provided between the vertical parts of the first steel plate (51) and the second steel plate (52). The bottom end of the second bolt (54) passes through the first steel plate (51), the hanging wall (2) and the second steel plate (52) in sequence and is threaded to a positioning nut (55). The positioning nut (55) abuts against the vertical part of the second steel plate (52).

4. The connection structure between the track-top ventilation duct wall and the middle plate according to claim 2, characterized in that: The first steel plate (51) and the second steel plate (52) are provided with limiting grooves (56) on their horizontal parts, and the first bolt (53) is movably connected to the limiting grooves (56).

5. The connection structure between the track-top ventilation duct wall and the middle plate according to claim 2, characterized in that: The vertical length of the second steel plate (52) is less than the vertical length of the first steel plate (51).

6. The connection structure between the track-top ventilation duct wall and the middle plate according to claim 1, characterized in that: The upper end of the connecting rib (3) is connected to a limiting component (8), the limiting component (8) is connected to one end of each side rib (7), and the other end of the side rib (7) is rotatably connected to the connecting rib (3).

7. The connection structure between the track-top ventilation duct wall and the middle plate according to claim 6, characterized in that: The limiting component (8) includes a limiting ring (81) and a plurality of wires (82). The limiting ring (81) is sleeved on the upper end of the connecting rib (3). One end of the plurality of wires (82) is respectively wrapped around one end of the plurality of side ribs (7), and the other end of the plurality of wires (82) abuts between the limiting ring (81) and the connecting rib (3).

8. The connection structure between the track-top ventilation duct wall and the middle plate according to claim 7, characterized in that: The outer circumferential surface of the connecting rib (3) is fitted with a guide cylinder (83). The side wall of the guide cylinder (83) is provided with a plurality of guide holes (84) along the circumferential direction. The other end of the wire (82) passes through the guide hole (84) and abuts against the limiting ring (81) and the connecting rib (3).

9. The connection structure between the track-top ventilation duct wall and the middle plate according to claim 6, characterized in that: The outer periphery of the connecting rib (3) is connected to a connecting block (11). The connecting block (11) has an installation groove (12) inside. The installation groove (12) is rotatably connected to a rotating block (13). The upper side of the connecting block (11) has a rotating groove (14) connected to the installation groove (12). The other end of the side rib (7) passes through the rotating groove (14) and is connected to the rotating block (13).

10. The connection structure between the track-top ventilation duct wall and the middle plate according to claim 1, characterized in that: Multiple connecting ribs (3) are provided, and the multiple connecting ribs (3) are arranged at intervals and connected to the upper side of the middle plate (1).

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