Urban railway existing line viaduct hanging plate structural joint sealing device

Abstract

The utility model discloses an urban railway existing line viaduct hanging plate structural seam sealing device which comprises elastic clamping seats, pressing plates, expansion bolts and sound insulation cotton, the multiple elastic clamping seats are clamped in the structural seam on the inner side of a viaduct hanging plate at intervals, and the opening of each elastic clamping seat is provided with one pressing plate. The expansion bolts penetrate through the pressing plates and the elastic clamping seats and then are in threaded connection with the viaduct hanging plate, the sound insulation cotton is fastened in the elastic clamping seats, each elastic clamping seat comprises a clamping part and a connecting part, the clamping parts are clamped in the structural joints, and the ends, in the length direction, of the two connecting parts are fixedly connected with the two side walls of the tops of the clamping parts respectively. Structural joints are sealed through the elastic clamping bases, the pressing plates and the sound insulation cotton, the elastic clamping bases are clamped in the structural joints on the inner side of the viaduct hanging plate and filled with the sound insulation cotton, then the pressing plates and the elastic clamping bases are fastened to the viaduct hanging plate through expansion bolts, use of an overhead working truck is avoided, the operation risk is reduced, and the working efficiency is improved. And the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of viaduct hanging plates, in particular to a sealing device for structural joints of viaduct hanging plates on existing urban rail lines. Background Art

[0002] The sealing of structural joints of viaduct hanging plates is one of the key measures to ensure the safety and stability of bridge structures. The traditional sealing scheme for structural joints of viaduct hanging plates requires the use of aerial work vehicles to occupy the road on the outside of the viaduct for construction. Workers carry out the anchoring and sealing of sound insulation felt aluminum plates on the aerial work vehicles. This sealing method has high operation risks and construction costs. Moreover, in some sections, the roads are narrow, and the traffic management department has high requirements for road occupation construction, making it inconvenient to erect aerial work vehicles and affecting the operation efficiency. In addition, due to the gaps between adjacent hanging plates on both sides of the bridge in the elevated section of the subway, there will be sound leakage phenomena, and the sound during the operation of the track will have a certain impact on the lives of surrounding residents. At present, most of them use sealant to seal the surface of the structural joints or use caulking glue to inject into the structural joints, without fixed facilities. However, the rubber is prone to aging and stiffness, and the aged and stiff rubber is easy to fall off, resulting in operation safety accidents. Therefore, a sealing method with safe use, high work efficiency, simple construction process and maintainable operation safety is needed. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the above-mentioned prior art, and provide a sealing device for structural joints of viaduct hanging plates on existing urban rail lines. The structural joints are sealed by elastic clamping seats, pressing plates and sound insulation cotton. The elastic clamping seats are clamped into the structural joints inside the viaduct hanging plates, and then the elastic clamping seats are filled with sound insulation cotton. The openings of the elastic clamping seats are closed by pressing plates, and the pressing plates and the elastic clamping seats are fastened to the viaduct hanging plates by expansion bolts, avoiding the use of aerial work vehicles, improving the sealing effect of the structural joints, reducing the operation risks and improving the construction efficiency.

[0004] To achieve the above object, the technical solution adopted by the utility model is as follows: A sealing device for the structural joint of the hanging plate of the existing viaduct of urban rail, which includes an elastic clamping seat, a pressing plate, an expansion bolt and a sound insulation cotton. The number of the elastic clamping seats is multiple, and the multiple elastic clamping seats are clamped in the structural joint inside the viaduct hanging plate at intervals. A pressing plate is arranged at the opening of each elastic clamping seat. The pressing plate is parallel to the viaduct hanging plate. The expansion bolt passes through the pressing plate and the elastic clamping seat and is threadedly connected to the viaduct hanging plate. The sound insulation cotton is fastened inside the elastic clamping seat. Each elastic clamping seat includes a clamping part and a connecting part. The top of the clamping part is open. The clamping part is clamped in the structural joint. The top of the clamping part is located at the inner side wall of the viaduct hanging plate, and the bottom of the clamping part is located in the structural joint. The number of the connecting parts is two, and the two connecting parts are fixedly connected to the two side walls at the top of the clamping part along the length direction respectively. Each connecting part is parallel to the pressing plate.

[0005] Preferably, the clamping part includes an arc section and a vertical section. The vertical section is a U-shaped structure. The horizontal end of the vertical section is parallel to the pressing plate. The two ends of the arc section are respectively connected to the vertical ends of the vertical section and the connecting part.

[0006] Preferably, each connecting part is provided with a first slot.

[0007] Preferably, the pressing plate is a square plate. The parts of the pressing plate on both sides of the structural joint are in contact with the connecting part. A second slot is arranged at the overlapping part of the pressing plate and the first slot. The length of the second slot is greater than the length of the first slot.

[0008] Preferably, the expansion bolt is an expansion bolt with an opening pin.

[0009] Preferably, the sound insulation cotton adopts an EPE pearl cotton foam strip.

[0010] Preferably, the distance between two adjacent elastic clamping seats is 30 cm.

[0011] Preferably, both the elastic clamping seat and the pressing plate are made of stainless steel materials.

[0012] The utility model has the following advantages compared with the prior art:

[0013] 1. The utility model seals the structural joint through the elastic clamping seat, the pressing plate and the sound insulation cotton. The elastic clamping seat is clamped in the structural joint inside the viaduct hanging plate, then the sound insulation cotton is filled inside the elastic clamping seat, the opening of the elastic clamping seat is closed by the pressing plate, and the pressing plate and the elastic clamping seat are fastened to the viaduct hanging plate through the expansion bolt, avoiding the use of an aerial work vehicle, improving the sealing effect of the structural joint, reducing the operation risk and improving the construction efficiency.

[0014] 2. The structure of the present utility model is simple, easy to install and highly practical, which can effectively accelerate the sealing speed of the structural joints of the viaduct hanging board, and improve the construction quality and economic benefits.

[0015] 3. The elastic clamping seat of the present utility model has a certain elasticity, which can offset the width change of the structural joint according to environmental changes, thus prolonging the service life of the elastic clamping seat.

[0016] 4. The elastic clamping seat of the present utility model is provided with an arc section and a vertical section. The sound insulation cotton is fastened inside the arc section, and the arc section abuts tightly against the structural joint. By abutting tightly against the structural joint with the arc section, the fastening effect on the sound insulation cotton is improved.

[0017] The following will further describe the present utility model in detail through the drawings and embodiments. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the positional relationship of the present utility model;

[0019] Figure 2 is a schematic diagram of the structure of the present utility model without the sound insulation cotton;

[0020] Figure 3 is Figure 2 a schematic exploded view of the structure of

[0021] Description of the Reference Numerals in the Drawings:

[0022] 1 - elastic clamping seat; 2 - pressing plate; 3 - expansion bolt;

[0023] 4 - clamping part; 4-1 - arc section; 4-2 - vertical section;

[0024] 5 - connecting part; 6 - structural joint; 7 - viaduct hanging board;

[0025] 8 - first threaded hole; 9 - second threaded hole; 10 - sound insulation cotton. Detailed Embodiment

[0026] As Figures 1 to 3As shown in the figure, the utility model discloses a sealing device for structural joints of hanging plates of existing elevated bridges in urban rail transit, which includes an elastic clamping seat 1, a pressing plate 2, an expansion bolt 3 and a sound insulation cotton 10. The number of elastic clamping seats 1 is multiple, and the multiple elastic clamping seats 1 are spaced and clamped in the structural joint 6 inside the inner side of the elevated bridge hanging plate 7. A pressing plate 2 is provided at the opening of each elastic clamping seat 1. The pressing plate 2 is parallel to the elevated bridge hanging plate 7. The expansion bolt 3 passes through the pressing plate 2 and the elastic clamping seat 1 and is threadedly connected to the elevated bridge hanging plate 7. The sound insulation cotton 10 is fastened inside the elastic clamping seat 1. Each elastic clamping seat 1 includes a clamping portion 4 and a connecting portion 5. The top of the clamping portion 4 is open. The clamping portion 4 is clamped in the structural joint 6. The top of the clamping portion 4 is located at the inner side wall of the elevated bridge hanging plate 7, and the bottom of the clamping portion 4 is located in the structural joint 6. The number of connecting portions 5 is two, and the end portions of the two connecting portions 5 along the length direction are respectively fixedly connected to the two side walls of the top of the clamping portion 4. Each connecting portion 5 is parallel to the pressing plate 2.

[0027] In this embodiment, the sound insulation cotton 10 is fastened inside the clamping portion 4 of the elastic clamping seat 1. The elevated bridge hanging plate 7 is perpendicular to the bridge deck. The structural joints 6 of adjacent elevated bridge hanging plates 7 are perpendicular to the bridge deck. A plurality of elastic clamping seats 1 are spaced and clamped along the height direction of the structural joint 6. The clamping portion 4 of each elastic clamping seat 1 is clamped in the structural joint 6, and the outer side wall of the clamping portion 4 is tightly abutted against the structural joint 6. The sound insulation cotton 10 is filled along the height direction of the structural joint 6 according to the size of the clamping portion 4, so that the overlapping part of the sound insulation cotton 10 and the clamping portion 4 is clamped inside the clamping portion 4. The parts of the sound insulation cotton 10 located on the upper side and the lower side of the clamping portion 4 are both closely attached to the structural joint 6, that is, the sound insulation cotton 10 is fixed in the structural joint 6 through the clamping portion 4. The two connecting portions 5 of the elastic clamping seat 1 are respectively closely attached to the elevated bridge hanging plates 7 on both sides of the structural joint 6. The pressing plate 2 is arranged along the width direction of the structural joint 6. The parts of the pressing plate 2 located on the left and right sides of the structural joint 6 respectively overlap with the two connecting portions 5, and then the elastic clamping seat 1 and the pressing plate 2 are fixed on the elevated bridge hanging plate 7 through the expansion bolt 3.

[0028] The clamping portion 4 includes an arc section 4-1 and a vertical section 4-2. The vertical section 4-2 is a U-shaped structure. The transverse end of the vertical section 4-2 is parallel to the pressing plate 2. The two ends of the arc section 4-1 are respectively connected to the vertical end of the vertical section 4-2 and the connecting portion 5.

[0029] In this embodiment, arc sections 4-1 are connected to the vertical ends of the vertical section 4-2. The centers of the two arc sections 4-1 overlap. The end of each arc section 4-1 far from the vertical section 4-2 is connected to the connecting portion 5. The outer side walls of the two opposite arc sections 4-1 are respectively tightly abutted against the elevated bridge hanging plates 7 on both sides of the structural joint 6, so that the clamping portion 4 is tightly clamped at the current position of the structural joint 6, and the overlapping part of the sound insulation cotton 10 and the arc section 4-1 is clamped inside the arc section 4-1. The sound insulation cotton 10 is fastened in the structural joint 6 through the arc section 4-1, preventing the sound insulation cotton 10 from directly being clamped in the structural joint 6 and slipping along the structural joint 6.

[0030] Each connecting part 5 is provided with a first slot 8.

[0031] In this embodiment, the distance between the first slot 8 and the side wall of the structural joint 6 is greater than or equal to 4 cm. At the same time, a first through hole is provided on the viaduct hanging plate 7 at a distance greater than or equal to 4 cm from the structural joint 6, so that the hole position of the first through hole avoids the concrete protection layer of the viaduct hanging plate 7, and the position of the first through hole matches the position of the first slot 8. After passing the bolt through the first slot 8, it can reach the first through hole, which is convenient for fixing the elastic clamping seat 1.

[0032] The pressing plate 2 is a square plate. The parts of the pressing plate 2 on both sides of the structural joint 6 are in contact with the connecting part 5. A second slot 9 is provided at the overlapping part of the pressing plate 2 and the first slot 8, and the length of the second slot 9 is greater than the length of the first slot 8.

[0033] In this embodiment, the width of the pressing plate 2 is consistent with the width of the connecting part 5. The middle part of the pressing plate 2 is located at the structural joint 6. The pressing plate 2 is closely attached to the connecting part 5 along the length direction. Adjust the pressing plate 2 according to the hole position of the first through hole and the position of the first slot 8, so that the second slot 9, the first slot 8 and the first through hole overlap. After the expansion bolt 3 passes through the second slot 9 and the first slot 8 in sequence, the expansion bolt 3 is screwed into the first through hole on the viaduct hanging plate 7, so that the pressing plate 2 and the elastic clamping seat 1 are fixed at the current position of the viaduct hanging plate 7.

[0034] In this embodiment, the length of the second slot 9 is greater than the length of the first slot 8, because the first slot 8 is located on the elastic clamping seat 1, and the arc section 4-1 of the elastic clamping seat 1 can consume the change in the gap width of the structural joint 6 caused by the thermal expansion and contraction of the bridge through elastic deformation. While the second slot 9 is located on the pressing plate 2, and the pressing plate 2 has no elasticity and cannot consume the change in the gap width of the structural joint 6 caused by the thermal expansion and contraction of the bridge through elastic deformation. Therefore, the length of the second slot 9 is greater than the length of the first slot 8, which is convenient for adapting to the changes caused by the temperature stress of the bridge.

[0035] The expansion bolt 3 is an expansion bolt with a split pin.

[0036] In this embodiment, after the expansion bolt 3 fixes the pressing plate 2 and the elastic clamping seat 1 on the viaduct hanging plate 7, two nuts are installed on each expansion bolt 3, and then a retaining pin is inserted into the bolt head of the expansion bolt 3 to prevent the nut from slipping out of the expansion bolt 3, so that the pressing plate 2 and the elastic clamping seat 1 are disconnected from the fixed connection state with the viaduct hanging plate 7.

[0037] The sound insulation cotton 10 adopts an EPE (Expandable Polyethylene) pearl cotton foam strip.

[0038] In this embodiment, sound insulation cotton 10 is filled in the arc section 4-1 of the clamping part 4. A plurality of elastic clamping seats 1 are arranged at intervals along the height direction of the structural joint 6. By filling the sound insulation cotton 10 in the arc section 4-1 of each elastic clamping seat 1 and using sealant to block the gaps of the sound insulation cotton 10, the structural joint 6 is connected into a whole along the height direction, playing a role in sound insulation and noise reduction. Moreover, the sound insulation cotton 10 can be fixed in the structural joint 6 through the arc section 4-1. Select sound insulation cotton 10 with a suitable width according to the size of the arc section 4-1 and fill the arc section 4-1 densely.

[0039] The distance between two adjacent elastic clamping seats 1 is 30 cm.

[0040] In this embodiment, a plurality of elastic clamping seats 1 are arranged along the height direction of the viaduct hanging plate 7, and the interval between every two adjacent elastic clamping seats 1 is set to 30 cm, so that the ends of the sound insulation cotton 10 clamped by two adjacent elastic clamping seats 1 along the height direction of the structural joint 6 are in contact with each other, making the sound insulation cotton 10 filled densely along the height direction of the structural joint 6, and effectively clamping a plurality of sound insulation cotton 10 along the height direction of the structural joint 6 in the structural joint 6 through a plurality of elastic clamping seats 1 respectively.

[0041] Both the elastic clamping seat 1 and the pressing plate 2 are made of stainless steel materials.

[0042] During use, select an elastic clamping seat 1 with a suitable size according to the width of the structural joint 6 inside the viaduct hanging plate 7, so that the clamping part 4 can be firmly clamped inside the structural joint 6 on the inner side of the viaduct hanging plate 7. After the clamping part 4 is clamped, the connecting part 5 fixedly connected to the clamping part 4 extends to the left and right sides along the width direction of the structural joint 6. The connecting parts 5 on the left and right sides of the clamping part 4 are respectively in close contact with the viaduct hanging plates 7 on both sides of the structural joint 6, and the elastic clamping seat 1 is clamped; three elastic clamping seats 1 are arranged at intervals along the height direction of the structural joint 6, and the distance between every two adjacent elastic clamping seats 1 is 30 cm. The installation methods of the three elastic clamping seats 1 are the same. After the elastic clamping seats 1 are installed, sound insulation cotton 10 is filled in the clamping part 4 of each elastic clamping seat 1. The sound insulation cotton 10 is filled densely along both the width and height directions of the structural joint 6 to connect the structural joint 6 into a whole. Then, masking paper is pasted on both sides along the height direction of the structural joint 6, and the height of the masking paper matches the height of the structural joint 6. Use a glue gun and sealant to inject glue into the structural joint 6 to block the gaps in the sound insulation cotton 10 inside the structural joint 6. After the glue injection is completed, install the pressing plate 2. Align the second threaded hole 9 on the pressing plate 2 with the first threaded hole 8 on the connecting part 5, and then pass the expansion bolt 3 through the second threaded hole 9 and the first threaded hole 8 and screw it into the first through hole on the viaduct hanging plate 7 to thread-connect the pressing plate 2, the elastic clamping seat 1 and the viaduct hanging plate 7. The utility model clamps the elastic clamping seat 1 inside the structural joint 6 on the inner side of the viaduct hanging plate 7, the pressing plate 2 closes the elastic clamping seat 1, and then the pressing plate 2 and the elastic clamping seat 1 are fixed to the inner side of the viaduct hanging plate 7 through the expansion bolt 3, avoiding the use of an aerial work platform, improving the construction efficiency and reducing the operation risk.

[0043] The above is only a preferred embodiment of the present utility model, and does not impose any limitation on the present utility model. Any simple modification, change and equivalent structural transformation made to the above embodiment according to the technical essence of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A sealing device for the joint of the hanging plate structure of an existing urban rail viaduct, characterized in that: The invention comprises an elastic card seat (1), a pressure plate (2), an expansion bolt (3) and sound insulation cotton (10), wherein the number of the elastic card seats (1) is multiple, and the multiple elastic card seats (1) are spaced and clamped in the structural seam (6) on the inner side of the viaduct hanging plate (7), and each of the openings of the elastic card seats (1) is provided with a pressure plate (2), and the pressure plate (2) is parallel to the viaduct hanging plate (7). The expansion bolt (3) passes through the pressure plate (2) and the elastic card seat (1) and is threadedly connected to the viaduct hanging plate (7), and the sound insulation cotton (10) is fastened to the elastic card seat (1). ), each of the elastic holders (1) comprises a clamping portion (4) and a connecting portion (5), the clamping portion (4) having an opening at the top, the clamping portion (4) being clamped in the structural seam (6), the top of the clamping portion (4) being located at the inner wall of the viaduct hanging plate (7), the bottom of the clamping portion (4) being located in the structural seam (6), the number of the connecting portions (5) being two, the ends of the two connecting portions (5) along the length direction being fixedly connected to the two side walls of the top of the clamping portion (4), and each of the connecting portions (5) being parallel to the pressure plate (2).

2. A sealing device for the structural seam of an existing urban rail viaduct according to claim 1, characterized in that: The clamping portion (4) comprises an arc segment (4-1) and a vertical segment (4-2); the vertical segment (4-2) is a U-shaped structure; the lateral end of the vertical segment (4-2) is parallel to the pressure plate (2); and the two ends of the arc segment (4-1) are respectively connected to the vertical end of the vertical segment (4-2) and the connecting portion (5).

3. A sealing device for the joint of the hanging plate structure of an existing urban rail viaduct according to claim 1, characterized in that: Each of the connecting parts (5) is provided with a first slot hole (8).

4. A sealing device for the structural seam of an existing urban rail viaduct slab according to claim 3, characterized in that: The pressing plate (2) is a square plate, and the parts of the pressing plate (2) located on both sides of the structural seam (6) are in contact with the connecting portion (5). A second slot hole (9) is provided at the overlapping portion between the pressing plate (2) and the first slot hole (8), and the length of the second slot hole (9) is greater than the length of the first slot hole (8).

5. A sealing device for the structural seam of an existing urban rail viaduct slab according to claim 1, characterized in that: The expansion bolt (3) is an expansion bolt with a cotter pin.

6. A sealing device for the joint of the hanging plate structure of an existing urban rail viaduct according to claim 1, characterized in that: The sound insulation cotton (10) is made of EPE pearl cotton foam strips.

7. A sealing device for the joint of the hanging plate structure of an existing urban rail viaduct according to claim 1, characterized in that: The distance between two adjacent elastic holders (1) is 30 cm.

8. The sealing device for the slab structure of an existing urban rail viaduct according to claim 1, characterized in that: The elastic clamping seat (1) and the pressing plate (2) are both made of stainless steel.

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