A triangular hanging basket device for cantilever construction of cable-stayed bridges

Abstract

This utility model belongs to the field of construction engineering technology, and specifically relates to a triangular hanging basket device for cantilever construction of cable-stayed bridges. It overcomes the problems of heavy weight and complex operation of existing cable-stayed bridge cantilever casting hanging baskets. It is 1 / 4 lighter than the previous cable-stayed hanging baskets and is simple to operate. It includes a main truss system, an anti-locking wheel travel system, a sliding beam travel system, and a formwork system. The main truss system includes multiple triangular trusses. Each triangular truss includes a longitudinally distributed main beam. Vertically distributed main truss uprights are installed on the main beams. The top of each main beam upright is connected to the front and rear ends of the main beam by two diagonal tie rods. The front and rear ends of the main beams of the multiple triangular trusses are connected as one unit by transversely distributed front and rear upper crossbeams.

Description

Technical Field

[0001] This utility model belongs to the field of building engineering technology, and in particular relates to a triangular hanging basket device for cantilever construction of cable-stayed bridges. Background Technology

[0002] The hanging basket is a major piece of equipment for the segmented construction of prestressed concrete continuous beams, T-shaped steel structures and cantilever beams. It can move forward as a whole along the track and is most widely used in bridge construction.

[0003] In the construction of cantilever cable-stayed bridges, the main form of formwork casting is the formwork casting, currently mainly the cable-stayed formwork. However, the cable-stayed formwork has the following disadvantages: its truss system structure is complex, resulting in heavy self-weight. Therefore, the stay cables of the cantilever cable-stayed bridge need to be tensioned multiple times, the elevation and cable force need to be adjusted many times, and the cable-stayed formwork is difficult to reuse after construction. Utility Model Content

[0004] This utility model provides a triangular hanging basket device for cantilever construction of cable-stayed bridges, which overcomes the problems of heavy weight and complicated operation of existing cantilever hanging baskets for cable-stayed bridges. It is 1 / 4 lighter than the previous cable-stayed hanging baskets and is simple to operate.

[0005] This utility model is achieved through the following technical solution:

[0006] A triangular hanging basket device for cantilever construction of a cable-stayed bridge includes a main truss system, an anti-locking wheel travel system, a sliding beam travel system, and a formwork system;

[0007] The main truss system includes multiple triangular trusses, each triangular truss including longitudinally distributed main beams, with vertically distributed main truss uprights installed on the main beams. The top of each main truss upright is connected to the front and rear ends of the main beams by two diagonal tie rods. The front and rear ends of the main beams of the multiple triangular trusses are connected as one unit by transversely distributed front and rear upper crossbeams.

[0008] The reverse-locking wheel travel system includes multiple reverse-locking wheel travel units, each corresponding to a triangular truss. Each reverse-locking wheel travel unit includes a travel track and a reverse-locking wheel seat. The travel track has U-shaped guide grooves on both the left and right sides. The top of the reverse-locking wheel seat is fixed to the bottom rear end of the main longitudinal beam. The bottom of the reverse-locking wheel seat has a reverse-locking wheel that can engage with the U-shaped guide groove of the travel track. The bottom of the main longitudinal beam has a support at the middle position for supporting the top surface of the travel track.

[0009] The formwork system is located below the main truss system, and the bottom formwork support of the formwork system is connected to the main longitudinal beam through a hanger; the sliding beam traveling system includes two sliding beams, which are respectively installed on the left and right sides of the bottom formwork support of the formwork system.

[0010] Furthermore, multiple carriages are fitted onto the slide beam, each carriage having a rectangular frame structure, and a roller that can contact the bottom surface of the slide beam is installed at the bottom of the frame structure of the carriage.

[0011] When the overhead basket device moves, the top of the frame structure of multiple carriages is fixed to the concrete pouring section by the suspension rods.

[0012] Furthermore, the top surface of the travel track is fixed to the concrete beam by a track pressure beam and a precision-rolled threaded rod.

[0013] Furthermore, a reverse wheel leveling pad is fixed between the top of the reverse wheel seat and the main longitudinal beam, and a support leveling pad is fixed between the top of the support and the main longitudinal beam.

[0014] Furthermore, the bottom formwork support of the formwork system includes multiple bottom formwork longitudinal beams, and the front and rear ends of the multiple bottom formwork longitudinal beams are fixed together by a front lower crossbeam and a rear lower crossbeam, respectively.

[0015] Furthermore, multiple triangular trusses are connected as a whole by the main truss transverse connecting frame.

[0016] The beneficial effects achieved by this utility model compared with the prior art are as follows:

[0017] 1. This utility model provides a triangular hanging basket device for cantilever construction of cable-stayed bridges, including a main truss system, an anti-locking wheel travel system, a sliding beam travel system, and a formwork system; the main truss system includes multiple triangular trusses;

[0018] The triangular hanging basket has a lower center of gravity, resulting in higher stability. Compared to cable-stayed hanging baskets, it saves a significant amount of steel, reducing its weight by 1 / 4. The triangular hanging basket requires less processing and has lower manufacturing requirements. From a safety perspective, the triangular shape is also safer, easier to process, has fewer main components, simpler force transmission, clearer force distribution, and less damage to the steel structure. Furthermore, the hanging basket has higher recycling value, a simpler structure, is easier to disassemble, and is lighter.

[0019] 2. This utility model has strong versatility and can be used with the hanging basket of ordinary cantilever bridges. Due to its light weight, it reduces the number of times the stay cables are tensioned and is easy to operate.

[0020] 3. Multiple sliding frames are fitted on the sliding beam, and rollers that can contact the bottom surface of the sliding beam are installed at the bottom of the frame structure of the sliding frames. When the upper hanging basket device moves, the top of the frame structure of the multiple sliding frames is fixed to the concrete pouring section by the hanging rod, so that the sliding frames act as guide rails for the sliding beam, making it easier for the formwork system to move with the whole, and making it more stable and safe. Attached Figure Description

[0021] Figure 1This is a side view of the triangular hanging basket device described in this utility model;

[0022] Figure 2 This is a cross-sectional view of the triangular hanging basket device described in this utility model;

[0023] Figure 3 This is a cross-sectional schematic diagram of the reverse-locking wheel traveling unit described in this utility model;

[0024] Figure 4 This is a schematic diagram of the cross-section of the support described in this utility model;

[0025] Figure 5 This is a schematic diagram of the cooperation between the carriage and the slide beam described in this utility model;

[0026] Figure 6 This is a schematic diagram of the forward movement process of the triangular hanging basket device described in this utility model;

[0027] In the diagram: 1. Triangular truss, 11. Main longitudinal beam, 12. Main truss upright, 13. Diagonal tie rod, 14. Front upper crossbeam, 15. Rear upper crossbeam, 2. Formwork system, 21. Bottom formwork longitudinal beam, 22. Front lower crossbeam, 23. Rear lower crossbeam, 3. Reverse wheel traveling unit, 31. Traveling track, 32. Reverse wheel seat, 33. Reverse wheel, 34. Reverse wheel leveling pad, 35. Track pressure beam, 4. Support, 41. Support leveling pad, 5. Sliding beam, 6. Sliding frame, 7. Main truss transverse connecting frame. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0029] In the description of the utility model, it should be understood that the terms "front", "rear", "up", "down", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the utility model 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. Therefore, they should not be construed as limitations on the utility model.

[0030] To adapt to the cantilever construction of cable-stayed bridges, this embodiment provides a triangular hanging basket device for cantilever construction of cable-stayed bridges, such as... Figures 1-2 As shown, it mainly includes the main truss system, the anti-locking wheel travel system, the sliding beam travel system, and the formwork system 2, etc.

[0031] In this embodiment, the main truss system includes five triangular trusses 1. Each triangular truss 1 includes longitudinally distributed main beams 11. Vertically distributed main truss uprights 12 are installed near the middle of the main beams 11. The tops of the main beam uprights 12 are fixedly connected to the front and rear ends of the main beams 11 by two diagonal tie rods 13. The five triangular trusses 1 are distributed laterally along the width of the cable-stayed bridge. The front and rear ends of the main beams 11 of the five triangular trusses 1 are connected as one unit by transversely distributed front upper crossbeams 14 and rear upper crossbeams 15, respectively. The triangular trusses 1 are connected as one unit by transverse main truss connecting frames 7. This ensures the entire main truss system is robust and stable, and is more stable than the suspended frame structure used in previous cable-stayed bridges. Furthermore, the weight is reduced due to the fewer structural components.

[0032] like Figures 3-4 As shown, the reverse-locking wheel travel system includes five reverse-locking wheel travel units 3, each corresponding to a triangular truss 1. Each reverse-locking wheel travel unit 3 includes a travel track 31 and a reverse-locking wheel seat 32. The travel track 31 is composed of two H-beams, forming U-shaped guide grooves on both sides. The top of the reverse-locking wheel seat 32 is fixed to the bottom rear end of the main longitudinal beam 11. A reverse-locking wheel frame is installed at the bottom of the reverse-locking wheel seat 32, and two sets of reverse-locking wheels 33 are installed inside the frame, allowing the wheels 33 to engage with the U-shaped guide grooves of the travel track 31. A support 4 is installed at the bottom center of the main longitudinal beam 11, supporting the top surface of the travel track 31. When the entire hanging basket device moves, the reverse-locking wheel seat 32 rolls within the travel track 31 via the reverse-locking wheels 33, while the support slides and rubs against the top surface of the track 31. This design allows for movement while controlling the speed through the sliding friction of the support.

[0033] Because the bridge deck has a transverse slope (higher in the middle and lower on both sides), in order to ensure that the triangular truss 1 is on the same horizontal plane, a reverse wheel leveling pad 34 is fixed between the top of the reverse wheel seat 32 and the main longitudinal beam 11, and a support leveling pad 41 is fixed between the top of the support 4 and the main longitudinal beam 11. In order to ensure the stability of the traveling track 31, a track pressure beam 35 is installed on the top surface of the traveling track 31, and the track pressure beam 35 is fixed to the concrete beam with a precision-rolled thread.

[0034] The formwork system 2 is located below the main truss system. The bottom formwork support of the formwork system 2 includes multiple bottom formwork longitudinal beams 21. The front and rear ends of these beams are fixed together by a front lower crossbeam 22 and a rear lower crossbeam 23, respectively. The bottom formwork support of the formwork system 2 is connected to the main longitudinal beam 11 via hangers. The sliding beam traveling system includes two sliding beams 5, which are respectively installed on the left and right sides of the bottom formwork support of the formwork system 2. Figure 5As shown, three carriages 6 are fitted on the sliding beam 5. The carriages 6 are rectangular frame structures. Rollers are installed at the bottom of the frame structure of the carriages 6. The rollers of the carriages 6 can contact the bottom surface of the sliding beam 5. When the upper hanging basket device moves, the top of the frame structure of multiple carriages 6 is fixed to the concrete pouring section by the suspension rod.

[0035] like Figure 6 As shown, the movement process of the triangular hanging basket device used in the cantilever construction of a cable-stayed bridge is as follows:

[0036] Step 1: Remove the vertical threaded rods of the anchored upper beam to lower the formwork system. The top of the frame structure of the slide 6 is fixed to the concrete pouring section by the hangers, in preparation for the movement of the hanging basket.

[0037] Step 2: After walking a certain distance, walk to the finish line;

[0038] Part Three: Improve the formwork system, connect the anchor points, and complete the forward movement of the hanging basket.

[0039] Through the above technical solutions, the triangular hanging basket has a lower center of gravity and higher stability. Compared with the cable-stayed hanging basket, it saves a lot of steel. The triangular hanging basket requires less processing and has lower processing requirements. From the perspective of safety operation, the triangle shape is also safer, easier to process, has fewer main components, simpler force transmission, clearer force distribution, and less damage to the steel structure. The hanging basket has higher recycling value, simpler structure, easier disassembly, and lower weight.

Claims

1. A triangular hanging basket device for cantilever construction of cable-stayed bridges, characterized in that, Including the main truss system, the anti-locking wheel travel system, the sliding beam travel system and the formwork system (2); The main truss system includes multiple triangular trusses (1), each triangular truss (1) including longitudinally distributed main beams (11) and vertically distributed main truss uprights (12) installed on the main beams (11). The top of each main truss upright (12) is connected to the front and rear ends of the main beams (11) by two diagonal tie rods (13). The front and rear ends of the main beams (11) of the multiple triangular trusses (1) are connected as one unit by transversely distributed front upper crossbeams (14) and rear upper crossbeams (15). The reverse wheel travel system includes multiple reverse wheel travel units (3), each of which corresponds to one of the triangular trusses (1). Each reverse wheel travel unit (3) includes a travel track (31) and a reverse wheel seat (32). The travel track (31) has U-shaped guide grooves on its left and right sides. The top of the reverse wheel seat (32) is fixed to the bottom rear end of the main longitudinal beam (11). The bottom of the reverse wheel seat (32) is provided with a reverse wheel (33) that can cooperate with the U-shaped guide groove of the travel track (31). The bottom middle position of the main longitudinal beam (11) is provided with a support (4) for supporting the top surface of the travel track (31). The template system (2) is located below the main truss system. The bottom template support of the template system (2) is connected to the main longitudinal beam (11) by a hanger. The sliding beam traveling system includes two sliding beams (5), which are respectively installed on the left and right sides of the bottom template support of the template system (2).

2. The triangular hanging basket device for cantilever construction of cable-stayed bridges according to claim 1, characterized in that, Multiple slide frames (6) are fitted on the slide beam. The slide frame (6) is a rectangular frame structure. A roller that can contact the bottom surface of the slide beam is installed at the bottom of the frame structure of the slide frame (6). When the hanging basket device moves, the top of the frame structure of multiple carriages (6) is fixed to the concrete pouring section by the hangers.

3. The triangular hanging basket device for cantilever construction of cable-stayed bridges according to claim 1, characterized in that, The top surface of the walking track (31) is fixed to the concrete beam by the track pressure beam (35) and the precision-rolled threaded rod.

4. The triangular hanging basket device for cantilever construction of cable-stayed bridges according to claim 1, characterized in that, A counter-locking wheel leveling pad (34) is fixed between the top of the counter-locking wheel seat (32) and the main longitudinal beam (11), and a support leveling pad (41) is fixed between the top of the support (4) and the main longitudinal beam (11).

5. The triangular hanging basket device for cantilever construction of cable-stayed bridges according to claim 1, characterized in that, The bottom formwork support of the formwork system (2) includes multiple bottom formwork longitudinal beams (21), and the front and rear ends of the multiple bottom formwork longitudinal beams (21) are fixed together by the front lower crossbeam (22) and the rear lower crossbeam (23), respectively.

6. The triangular hanging basket device for cantilever construction of cable-stayed bridges according to any one of claims 1-5, characterized in that, Multiple triangular trusses (1) are connected as one unit by a main truss transverse connecting frame (7).

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