Steel-concrete composite beam cable-stayed bridge tower beam cable synchronous construction device and construction method

Abstract

The application belongs to the technical field of bridge construction, and is especially a steel-concrete composite beam cable-stayed bridge tower beam cable synchronous construction device and construction method. In view of the problems of complicated construction steps, low construction efficiency, the need to use various supporting auxiliary structures, and high material consumption, the following scheme is proposed. It includes an outer shell foundation pier, the top end of the foundation pier is integrally formed with a foundation platform, the top of the foundation platform is poured with multiple bridge piers through concrete, the top end of the multiple bridge piers is fixed with a same foundation beam, and the two sides of the multiple bridge piers are both provided with inclined struts for supporting the foundation beam. In the application, the construction of the main beam and the main tower can be carried out at the same time, and the stay cables can be arranged when the construction of one end beam and the main tower frame is completed. Therefore, when the main beam and the main tower are constructed, various supporting auxiliary structures do not need to be used, the main beam and the main tower can be supported, the material consumption is reduced, and the construction efficiency of the cable-stayed bridge is improved.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, and in particular to a device and method for simultaneous construction of towers, beams and cables of a steel-concrete composite cable-stayed bridge. Background Technology

[0002] A cable-stayed bridge, also known as a skeletal bridge, is a type of bridge where the main girder is directly supported by numerous cables to the bridge towers. It is a structural system composed of compression-bearing towers, tension-bearing cables, and bending-resistant girder sections. As a cable-stayed system, cable-stayed bridges have a greater span capacity than beam bridges and are the most common type of long-span bridge. The bridge deck is suspended by numerous steel cables directly connected to the towers, and the main components are the main towers, main girder, and stay cables.

[0003] Gateways can connect to water and electricity meters. When customers use traditional water meter centralized reading gateways, they need to do a lot of work such as parsing protocols and processing logic, and manufacturers cannot respond in a timely manner when problems occur.

[0004] There are still some shortcomings in the existing technology for cable-stayed bridge construction: In the existing technology, the general construction sequence for cable-stayed bridges is to build the towers first, then the beams, and finally the stay cables. This step-by-step construction is complicated, consumes a lot of time, and thus reduces construction efficiency. In existing technologies, the construction of main beams requires the frequent use of various supporting structures and other auxiliary building structures, which consumes a lot of materials and is not conducive to reducing construction costs.

[0005] To address the aforementioned issues, this invention proposes a device and method for the simultaneous construction of towers, beams, and cables of a steel-concrete composite cable-stayed bridge. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies, such as complicated construction steps, low construction efficiency, the need for various supporting auxiliary structures, and the consumption of a large amount of materials. The invention proposes a simultaneous construction device and method for steel-concrete composite beam cable-stayed bridge towers, beams, and cables.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A steel-concrete composite beam cable-stayed bridge tower-beam-cable synchronous construction device includes an outer shell foundation pier. The top of the foundation pier is integrally formed with a foundation platform. Multiple bridge piers are poured with concrete on the top of the foundation platform. The top of the multiple bridge piers is fixed with the same foundation beam. Both sides of the multiple bridge piers are provided with diagonal bracing columns for supporting the foundation beam, and the top of the diagonal bracing columns is fixedly connected to the bottom of the foundation beam. Two sets of main beam construction structures are respectively set on the top two sides of the foundation beam to connect the steel box girder to the foundation beam; The main tower construction structure is located on top of the foundation beam and is used for the construction of the main tower. The cable-stayed construction structure is set on both sides of the top of the foundation beam. The cable-stayed construction can be carried out whenever a part of the main beam and main tower is completed. The cable-stayed construction structure can form a cable-stayed support between the main beam and the main tower.

[0008] In one possible design, the main beam construction structure includes a sliding platform slidably connected to one side of the top of the foundation beam. A beam construction frame is slidably fitted onto the outer wall of the foundation beam, and the sliding platform is located within the beam construction frame. Connecting flanges are bolted to the inner walls of the beam construction frame on both sides. A fixed shaft located above the foundation beam is welded to the side of the connecting flange closest to the sliding platform, and one end of the fixed shaft is welded to one side of the sliding platform. Rollers are rotatably fitted onto the outer wall of the fixed shaft to facilitate the movement of the sliding platform and the beam construction frame. A crane is located at the top of the sliding platform, and two grooves are provided on one side of the sliding platform, which cooperate with the inclined tension construction structure. When the sliding platform and the beam construction frame move to one end of the foundation beam, one side of the beam construction frame extends to the outside of the foundation beam. At this time, the steel box girder can be hoisted into the beam construction frame by the crane, facilitating the connection between the steel box girder and one end of the foundation beam.

[0009] In one possible design, the main tower construction structure includes a tower crane bolted to the top of a foundation beam. Two main tower bases are fixed to the top of the foundation beam, with the tower crane positioned between the two main tower bases. A main tower frame is welded to the top of each of the two main tower bases. A main tower construction frame is fitted onto the outer wall of each of the two main tower frames. A common transverse connecting plate is welded to the side of each main tower construction frame that is close to the other. A lifting frame is fitted onto the top outer wall of the tower crane, positioned above the transverse connecting plate. The lifting frame is fixedly connected to the transverse connecting plate via multiple sets of tension structures. Simultaneously, the tower crane hoists the main tower frame to the top of the main tower base, aligning the main tower base with the main tower frame. Then, the tower crane rises automatically, and its top, via the transverse connecting plate, lifts the main tower construction frame, which covers the main tower frame. Concrete is then poured onto the main tower frame through the main tower construction frame, forming a unified structure between the main tower base and the main tower frame, thus easily completing the main tower construction.

[0010] In one possible design, the tensioning structure includes a second connector welded to the top of the transverse connecting plate, with a rope fixed to the top of the second connector. A first connector is fixed to the top of the rope, and a screw is welded to the top of the first connector. The top of the screw passes through the lifting frame, and the top of the lifting frame is provided with a hexagonal nut threadedly connected to the screw. The tensioning structure can connect the lifting frame, the transverse connecting plate, and the main tower construction frame into a whole. When the tower crane self-lifts, it can drive the transverse connecting plate and the main tower construction frame to rise, thereby enabling the rapid completion of the main tower construction.

[0011] In one possible design, the cable-stayed construction structure includes four lower cable-stayed seats bolted to both sides of the top of the foundation beam, and upper cable-stayed seats bolted to both sides of the two main towers. A stay cable is installed between the lower and upper cable-stayed seats on the same side. Whenever a section of the main beam and main tower is constructed, the upper cable-stayed seats, stay cables, and lower cable-stayed seats can be installed between the main beam and the main tower, so that the main beam, main tower, and stay cables are constructed simultaneously, which not only improves construction efficiency but also eliminates the need for various supporting auxiliary structures to support the main beam.

[0012] In one possible design, the top of the foundation beam is equipped with a movable structure for driving the main beam construction structure to move. The movable structure includes four slide rails fixed to the top of the foundation beam by bolts. The bottom of the sliding platform is equipped with multiple sliders, which slide in cooperation with the slide rails. The four slide rails are arranged in pairs, with a common sliding plate slidably connecting adjacent slide rails. Multiple first slots are provided on the side of each adjacent slide rail that is close to each other. Each end of the sliding plate has a first groove. Each of the two first grooves contains a first trapezoidal pin that engages with the first slot. The inclined surface of a trapezoidal pin faces the sliding platform. A first spring is fixed to the inner wall of one side of the first slide groove. The end of the first spring near the slide rail is fixedly connected to the first trapezoidal pin. A second jack is fixed to the side of the sliding plate near the sliding platform by bolts, and one end of the piston rod of the second jack is fixedly connected to one side of the sliding platform. When it is necessary to drive the main beam construction structure to move, by activating the second jack, the output shaft of the second jack can push the main beam construction structure to move a certain distance due to the cooperation between the first trapezoidal pin and the first slot, thereby enabling the main beam construction structure to gradually carry out the construction of the main beam.

[0013] In one possible design, the slide rail is assembled from multiple track segments, and the bottom end of the main tower base is fixedly connected through the foundation beam and to the top of the corresponding pier. After the main beam construction structure completes the construction of a section of steel box girder, a track segment of the corresponding length can be laid to enable the main beam construction structure to carry out the construction of the next section of steel box girder. The cooperation between the pier and the main tower base can increase the stability of the foundation beam and the main tower.

[0014] In one possible design, multiple movable platforms are bolted to the bottom inner wall of the beam construction frame. Sliding blocks are slidably connected within each movable platform. A first jack is bolted to one side inner wall of each movable platform. The output shaft of the first jack is fixedly connected to one side of the sliding block. A U-shaped frame is welded to the top of the sliding block, and multiple guide wheels are rotatably connected within the U-shaped frame. When the steel box girder is placed on top of the multiple U-shaped frames, the sliding blocks are moved by the first jack, which aligns the steel box girder with the foundation beam. The guide wheels reduce the friction between the steel box girder and the U-shaped frame, thus preventing the steel box girder from shifting position when moving towards the foundation beam, thereby completing the assembly of the steel box girder and the foundation beam.

[0015] In one possible design, the outer wall of the fixed shaft is provided with multiple second sliding grooves, each containing a second trapezoidal pin made of metal. The inner wall of the roller is provided with multiple second slots that engage with the second trapezoidal pins. Multiple second springs are fixed to one side of the inner wall of the second sliding groove, with one end of each spring fixedly connected to the second trapezoidal pin. An electromagnet is fixed to one side of the inner wall of the second sliding groove, and the electromagnet and the second trapezoidal pin generate a magnetic attraction. When the piston rod of the second jack extends and pushes the sliding platform to move, the second slots engage with the inclined surfaces of the second trapezoidal pins, thereby enabling the fixed shaft and the roller to rotate. When the piston rod of the second jack retracts, the right-angled side of the second trapezoidal pin engages with the second slots, thereby locking the fixed shaft and the roller in a locked state and preventing the sliding platform from moving in the opposite direction.

[0016] The method for using the synchronous construction device for the tower, beam, and cable of a steel-concrete composite cable-stayed bridge in this application includes the following steps: S1. During the main beam construction, the second jack is activated. The piston rod of the second jack pushes the sliding platform and the beam construction frame to move towards one end of the foundation beam until one end of the beam construction frame extends to the outside of the foundation beam. The precast steel box girder is then hoisted into the beam construction frame by a crane. The steel box girder is positioned above multiple U-shaped frames. The first jack pushes the sliding block and U-shaped frames to move, thereby adjusting the position of the steel box girder to align with the foundation beam. Then, the crane pulls the steel box girder towards the foundation beam. The guide rollers reduce the friction between the steel box girder and the U-shaped frames, thus preventing the steel box girder from shifting position when moving towards the foundation beam, completing the assembly of the steel box girder and the foundation beam. S2. During the construction of the main beam, the main tower frame is simultaneously hoisted to the top of the main tower base by a tower crane, so that the main tower base and the main tower frame are connected. Then the tower crane rises by itself, and the top of the tower crane drives the main tower construction frame to rise through the horizontal connecting plate. The main tower construction frame can cover the main tower frame. Then concrete is poured into the main tower frame through the main tower construction frame, so that the main tower base and the main tower frame form an integral whole. S3. After a portion of the main tower and steel box girder are completed, the lower and upper inclined tie rods are connected to the steel box girder and a portion of the main tower respectively. The inclined tie rods between the steel box girder and the main tower are completed through the cooperation between the lower and upper inclined tie rods and the inclined cables. After the inclined cables are installed, the construction of the main girder and the main tower can be carried out again. During the construction process, there is no need to use various supporting auxiliary structures to support the main girder. S4. Additionally, during the re-construction of the main beam, the piston rod of the second jack retracts. Due to the engagement of the second trapezoidal pin and the second slot, the fixed shaft and roller remain stationary. Therefore, when the piston rod of the second jack retracts, it drives the sliding plate to move towards the sliding platform until the first trapezoidal pin engages with the first slot again under the elastic force of the first spring. As the piston rod of the second jack extends and retracts, it continuously moves the sliding platform and the beam construction frame towards one end of the foundation beam, thereby completing the construction of the main beam. Whenever a section of the main beam and main tower is constructed, the upper and lower inclined rails can be installed between the main beam and the main tower, so that the main beam, main tower, and inclined rails can be constructed simultaneously. This not only improves construction efficiency but also eliminates the need for various supporting auxiliary structures to support the main beam. Furthermore, after each section of the steel box girder is constructed, a track section of the corresponding length can be laid.

[0017] In this invention, a sliding platform is slidably connected to one side of the top of the foundation beam, and a beam construction frame is slidably fitted onto the outer wall of the foundation beam. The inner walls of the beam construction frame on both sides adjacent to each other are connected to flanges with welded fixed shafts, one end of which is welded to the sliding platform. Rollers are rotatably fitted onto the outer wall of the fixed shaft, and a crane is mounted on the top of the sliding platform. When the sliding platform and beam construction frame move to one end of the foundation beam, one side of the beam construction frame extends to the outside of the foundation beam. At this time, the steel box girder can be hoisted into the beam construction frame by the crane, facilitating the connection between the steel box girder and one end of the foundation beam, thereby enabling easy construction of the main beam. In this invention, a main tower frame is welded to the top of each of the two main tower bases, and a main tower construction frame is fitted onto the outer wall of each of the two main tower frames. A common transverse connecting plate is welded to the side of each main tower construction frame that is close to the other. A lifting frame is fitted onto the top outer wall of the tower crane, and the lifting frame is located above the transverse connecting plate. The lifting frame is fixedly connected to the transverse connecting plate through multiple sets of tension structures. The main tower frame is hoisted to the top of the main tower base, so that the main tower base and the main tower frame are connected. The tower crane rises by itself, and the top of the tower crane drives the main tower construction frame to rise through the transverse connecting plate. The main tower construction frame can cover the main tower frame. Then, concrete is poured onto the main tower frame through the main tower construction frame, so that the main tower base and the main tower frame form an integral whole, and the construction of the main tower is easily completed. In this invention, two lower inclined brackets are provided on both sides of the top of the foundation beam, and upper inclined brackets are fixed to both sides of the two main towers by bolts. A stay cable is provided between the lower and upper inclined brackets on the same side. Whenever a part of the main beam and main tower is constructed, the upper inclined bracket, stay cable and lower inclined bracket can be installed between the main beam and the main tower, so that the main beam, main tower and stay cable are constructed simultaneously, which not only improves construction efficiency, but also eliminates the need to use various supporting auxiliary structures to support the main beam. In this invention, a sliding plate is slidably connected between two adjacent slide rails. Multiple first slots are provided on the side of each adjacent slide rail that is close to each other. First grooves are provided at both ends of the sliding plate. A first trapezoidal pin is provided in each of the two first grooves, engaging with the first slot. A second jack is fixed to one side of the sliding plate. By activating the second jack, the output shaft of the second jack can push the main beam construction structure a certain distance due to the engagement of the first trapezoidal pin with the first slot, thereby enabling the main beam construction structure to gradually carry out the main beam construction.

[0018] In this invention, the construction of the main beam and the main tower can be carried out simultaneously, and the stay cables can be laid after each end beam and main tower are completed. Thus, when constructing the main beam and the main tower, there is no need to use various supporting auxiliary structures to support the main beam and the main tower, which not only reduces material consumption but also improves the construction efficiency of cable-stayed bridges. Attached Figure Description

[0019] Figure 1 This is a first-view three-dimensional structural diagram of the steel-concrete composite beam cable-stayed bridge tower-beam-cable synchronous construction device provided in Embodiment 1 of the present invention. Figure 2 This is a second-view three-dimensional structural schematic diagram of the steel-concrete composite beam cable-stayed bridge tower-beam-cable synchronous construction device provided in Embodiment 1 of the present invention. Figure 3 This is a three-dimensional structural diagram of the main beam construction structure of the steel-concrete composite beam cable-stayed bridge tower-beam-cable synchronous construction device provided in Embodiment 1 of the present invention; Figure 4 This is a three-dimensional exploded view of the main beam construction structure of the steel-concrete composite beam cable-stayed bridge tower-beam-cable synchronous construction device provided in Embodiment 1 of the present invention; Figure 5 This is a three-dimensional exploded structural diagram of the moving platform, sliding block, and U-shaped frame of the synchronous construction device for the steel-concrete composite beam cable-stayed bridge tower, beam, and cable provided in Embodiment 1 of the present invention. Figure 6 This is a three-dimensional exploded structural diagram of the sliding plate, the first trapezoidal pin, and the slide rail of the synchronous construction device for the steel-concrete composite beam cable-stayed bridge tower, beam, and cable provided in Embodiment 1 of the present invention. Figure 7This is a three-dimensional exploded view of the main tower construction structure of the steel-concrete composite beam cable-stayed bridge tower beam-cable synchronous construction device provided in Embodiment 1 of the present invention; Figure 8 This is a three-dimensional structural diagram of the rope, screw, and hexagonal nut of the synchronous construction device for the tower, beam, and cable of a steel-concrete composite cable-stayed bridge provided in Embodiment 1 of the present invention. Figure 9 This is a front sectional view of the fixed shaft and rollers of the synchronous construction device for the steel-concrete composite beam cable-stayed bridge tower and cable provided in Embodiment 2 of the present invention.

[0020] In the diagram: 1. Foundation pier; 2. Foundation platform; 3. Bridge pier; 4. Foundation beam; 5. Diagonal bracing column; 6. Sliding platform; 7. Crane; 8. Beam construction frame; 9. Connecting flange; 10. Fixed shaft; 11. Roller; 12. Moving platform; 13. First jack; 14. Sliding block; 15. U-shaped frame; 16. Guide wheel; 17. Slide rail; 18. Sliding block; 19. First slot; 20. Sliding plate; 21. First slide groove; 22. First trapezoidal pin; 23. First spring; 4. Second jack; 25. Main tower base; 26. Main tower frame; 27. Tower crane; 28. Lifting frame; 29. ​​Electromagnet; 30. Horizontal connecting plate; 31. Main tower construction frame; 32. Hexagonal nut; 33. Screw; 34. First connector; 35. Rope; 36. Second connector; 37. Upper inclined plate; 38. Stay cable; 39. Lower inclined plate; 40. Groove; 41. Second slide; 42. Second trapezoidal pin; 43. Second slot; 44. Second spring. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Example 1

[0023] Reference Figures 1-8 The steel-concrete composite beam cable-stayed bridge tower beam-cable synchronous construction device is used in the field of bridge construction. It includes an outer shell foundation pier 1, a foundation platform 2 integrally formed at the top of the foundation pier 1, multiple bridge piers 3 are poured with concrete on the top of the foundation platform 2, the top of the multiple bridge piers 3 is fixed with the same foundation beam 4, and the two sides of the multiple bridge piers 3 are provided with diagonal bracing columns 5 for supporting the foundation beam 4, and the top of the diagonal bracing columns 5 is fixedly connected to the bottom of the foundation beam 4.

[0024] Reference Figure 1 , Figure 3 and Figure 4The device also includes two sets of main beam construction structures respectively set on both sides of the top of the foundation beam 4, used to connect the steel box girder to the foundation beam 4 (the steel box girder can be a precast steel-concrete composite beam); the main beam construction structure includes a sliding platform 6 slidably connected to one side of the top of the foundation beam 4, a beam construction frame 8 slidably fitted on the outer wall of the foundation beam 4, and the sliding platform 6 located inside the beam construction frame 8, with connecting flanges 9 bolted to the inner walls of the two adjacent sides of the beam construction frame 8, and a fixed shaft 10 located above the foundation beam 4 welded to the side of the connecting flange 9 closest to the sliding platform 6. Furthermore, one end of the fixed shaft 10 is welded to one side of the sliding platform 6. The outer wall of the fixed shaft 10 is fitted with rollers 11 to facilitate the movement of the sliding platform 6 and the beam construction frame 8. A crane 7 is provided on the top of the sliding platform 6. Two grooves 40 are provided on one side of the sliding platform 6, and the grooves 40 cooperate with the inclined construction structure. When the sliding platform 6 and the beam construction frame 8 move to one end of the foundation beam 4, one side of the beam construction frame 8 extends to the outside of the foundation beam 4. At this time, the steel box girder can be hoisted into the beam construction frame 8 by the crane 7, which facilitates the connection of the steel box girder with one end of the foundation beam 4.

[0025] Reference Figure 4 and Figure 6 The top of the foundation beam 4 is equipped with a movable structure for driving the main beam construction structure to move. The movable structure includes four slide rails 17 fixed to the top of the foundation beam 4 by bolts. The bottom of the sliding platform 6 is equipped with multiple sliders 18, and the sliders 18 slide in cooperation with the slide rails 17. The four slide rails 17 are arranged in pairs, and the same sliding plate 20 is slidably connected between adjacent slide rails 17. Multiple first slots 19 are provided on the side of adjacent slide rails 17 that are close to each other. Both ends of the sliding plate 20 are provided with first grooves 21. Each of the two first grooves 21 is provided with a first trapezoidal pin 22 that engages with the first slot 19, and the inclined surface of the first trapezoidal pin 22 is... Facing the sliding platform 6, a first spring 23 is fixed to the inner wall of one side of the first slide groove 21. The end of the first spring 23 near the slide rail 17 is fixedly connected to the first trapezoidal pin 22. The side of the sliding plate 20 near the sliding platform 6 is fixed with a second jack 24 by bolts, and one end of the piston rod of the second jack 24 is fixedly connected to one side of the sliding platform 6. When it is necessary to drive the main beam construction structure to move, by activating the second jack 24, since the first trapezoidal pin 22 cooperates with the first slot 19, the output shaft of the second jack 24 can push the main beam construction structure to move a certain distance, thereby enabling the main beam construction structure to gradually carry out the construction of the main beam.

[0026] Reference Figure 4 and Figure 5Multiple movable platforms 12 are bolted to the bottom inner wall of the beam construction frame 8. Sliding blocks 14 are slidably connected inside the movable platforms 12. A first jack 13 is bolted to one side inner wall of the movable platform 12. The output shaft of the first jack 13 is fixedly connected to one side of the sliding block 14. A U-shaped frame 15 is welded to the top of the sliding block 14. Multiple guide wheels 16 are rotatably connected inside the U-shaped frame 15. When the steel box girder is placed on top of the multiple U-shaped frames 15, the sliding block 14 is moved by the first jack 13, which can align the steel box girder with the foundation beam 4. The guide wheels 16 can reduce the friction between the steel box girder and the U-shaped frame 15, thus preventing the steel box girder from shifting position when it moves towards the foundation beam 4, and completing the assembly of the steel box girder and the foundation beam 4.

[0027] Reference Figure 2 The slide rail 17 is assembled from multiple track segments. The bottom end of the main tower base 25 is fixedly connected to the foundation beam 4 and the top of the corresponding pier 3. After the main beam construction structure completes the construction of a section of steel box girder, the track segment of the corresponding length can be laid to enable the main beam construction structure to carry out the construction of the next section of steel box girder. The cooperation between the pier 3 and the main tower base 25 can increase the stability of the foundation beam 4 and the main tower.

[0028] Reference Figure 1 and Figure 7 The device also includes a main tower construction structure installed on top of the foundation beam 4 for constructing the main tower. The main tower construction structure includes a tower crane 27 bolted to the top of the foundation beam 4. Two main tower bases 25 are fixed to the top of the foundation beam 4, and the tower crane 27 is located between the two main tower bases 25. A main tower frame 26 is welded to the top of each of the two main tower bases 25. A main tower construction frame 31 is fitted onto the outer wall of each of the two main tower frames 26. A common transverse connecting plate 30 is welded to the side of the two main tower construction frames 31 that are close to each other. A lifting frame 28 is fitted onto the top outer wall of the tower crane 27 for lifting... The lifting frame 28 is located above the transverse connecting plate 30. The lifting frame 28 is fixedly connected to the transverse connecting plate 30 through multiple sets of tension structures. At the same time, the main tower frame 26 is hoisted to the top of the main tower base 25 by the tower crane 27, so that the main tower base 25 and the main tower frame 26 are connected. Then, the tower crane 27 lifts itself, and the top of the tower crane 27 drives the main tower construction frame 31 to rise through the transverse connecting plate 30. The main tower construction frame 31 can cover the main tower frame 26. Then, concrete is poured into the main tower frame 26 through the main tower construction frame 31, so that the main tower base 25 and the main tower frame 26 form a whole, and the construction of the main tower is easily completed.

[0029] Reference Figure 7 and Figure 8The tensioning structure includes a second connector 36 welded to the top of the transverse connecting plate 30. A rope 35 is fixed to the top of the second connector 36, and a first connector 34 is fixed to the top of the rope 35. A screw 33 is welded to the top of the first connector 34, and the top of the screw 33 passes through the lifting frame 28. A hexagonal nut 32 threadedly connected to the screw 33 is provided on the top of the lifting frame 28. The tensioning structure can connect the lifting frame 28, the transverse connecting plate 30, and the main tower construction frame 31 into a whole. When the tower crane 27 lifts itself, it can drive the transverse connecting plate 30 and the main tower construction frame 31 to rise, thereby enabling the construction of the main tower to be completed quickly.

[0030] Reference Figure 1 and Figure 7 The device also includes two side-stayed construction structures set on the top of the foundation beam 4. Each time a part of the main beam and main tower is completed, the side-stayed construction can be carried out. The side-stayed construction structure can form a side-stayed support between the main beam and the main tower. The side-stayed construction structure includes four lower side-stayed seats 39 bolted to both sides of the top of the foundation beam 4. Both sides of the two main towers 26 are fixed with upper side-stayed seats 37 bolted to them. A stay cable 38 is provided between the lower side-stayed seats 39 and the upper side-stayed seats 37 on the same side. Each time a part of the main beam and main tower is constructed, the upper side-stayed seats 37, the stay cable 38 and the lower side-stayed seats 39 can be installed between the main beam and the main tower. Thus, the main beam, the main tower and the stay cable 38 are constructed simultaneously, which not only improves the construction efficiency, but also eliminates the need to use various supporting auxiliary structures to support the main beam.

[0031] Example 2

[0032] refer to Figure 9 Improvements based on Embodiment 1: The outer wall of the fixed shaft 10 is provided with multiple second sliding grooves 41, and each of the multiple second sliding grooves 41 is slidably connected with a second trapezoidal pin 42. The second trapezoidal pin 42 is made of metal (the specific metal material will not be described in detail again). The inner wall of the roller 11 is provided with multiple second slots 43 that engage with the second trapezoidal pins 42. Multiple second springs 44 are fixed to one side of the inner wall of the second sliding groove 41. One end of each second spring 44 is fixedly connected to the second trapezoidal pin 42. An electromagnet 29 is fixed to the inner side wall, and a magnetic attraction is generated between the electromagnet 29 and the second trapezoidal pin 42. When the piston rod of the second jack 24 extends and pushes the sliding platform 6 to move, the second slot 43 engages with the inclined surface of the second trapezoidal pin 42, thereby enabling the fixed shaft 10 and the roller 11 to rotate. When the piston rod of the second jack 24 retracts, the right-angled side of the second trapezoidal pin 42 engages with the second slot 43, thereby locking the fixed shaft 10 and the roller 11 and preventing the sliding platform 6 from moving in the opposite direction.

[0033] The method for using the synchronous construction device for steel-concrete composite girder cable-stayed bridge towers, beams, and cables includes the following steps: S1. During the main beam construction, the second jack 24 is activated. The piston rod of the second jack 24 pushes the sliding platform 6 and the beam construction frame 8 to move towards one end of the foundation beam 4 until one end of the beam construction frame 8 extends to the outside of the foundation beam 4. The precast steel box girder is then hoisted into the beam construction frame 8 by the crane 7. The steel box girder is located above multiple U-shaped frames 15. The first jack 13 pushes the sliding block 14 and the U-shaped frame 15 to move, thereby adjusting the position of the steel box girder so that it is aligned with the foundation beam 4. Then, the crane 7 pulls the steel box girder towards the foundation beam 4. The guide wheel 16 reduces the friction between the steel box girder and the U-shaped frame 15, thus preventing the steel box girder from shifting position when moving towards the foundation beam 4, and completing the assembly of the steel box girder and the foundation beam 4. S2. During the construction of the main beam, the main tower 26 is simultaneously hoisted to the top of the main tower base 25 by the tower crane 27, so that the main tower base 25 and the main tower 26 are connected. Then the tower crane 27 rises by itself, and the top of the tower crane 27 drives the main tower construction frame 31 to rise through the horizontal connecting plate 30. The main tower construction frame 31 can cover the main tower 26. Then concrete is poured into the main tower 26 through the main tower construction frame 31, so that the main tower base 25 and the main tower 26 form an integral whole. S3. After a portion of the main tower 26 and the steel box girder are completed, the lower inclined tie rod 39 and the upper inclined tie rod 37 are connected to the steel box girder and a portion of the main tower 26, respectively. The inclined tie rod between the steel box girder and the main tower is completed through the cooperation between the lower inclined tie rod 39, the upper inclined tie rod 37 and the inclined cable 38. After the inclined cable 38 is installed, the construction of the main girder and the main tower can be carried out again. During the construction process, there is no need to use various supporting auxiliary structures to support the main girder. S4. In addition, when the main beam is constructed again, the piston rod of the second jack 24 retracts. Due to the cooperation between the second trapezoidal pin 42 and the second slot 43, the fixed shaft 10 and the roller 11 can be kept stationary. Therefore, when the piston rod of the second jack 24 retracts, it drives the sliding plate 20 to move towards the sliding platform 6 until the first trapezoidal pin 22 is engaged with the first slot 19 again under the elastic force of the first spring 23. Then, as the piston rod of the second jack 24 extends and retracts, it can continuously move the sliding platform 6 and the beam construction frame 8 towards one end of the foundation beam 4, thereby completing the construction of the main beam. Whenever a part of the main beam and the main tower is constructed, the upper inclined plate 37, the inclined cable 38 and the lower inclined plate 39 can be installed between the main beam and the main tower, so that the main beam, the main tower and the inclined cable 38 are constructed simultaneously. This not only improves the construction efficiency, but also eliminates the need to use various supporting auxiliary structures to support the main beam. In addition, after each section of the steel box girder is constructed, a track section of the corresponding length can be laid.

[0034] However, as is well known to those skilled in the art, the working principles and wiring methods of electromagnet 29, first jack 13 and second jack 24 are commonplace and belong to conventional means or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A synchronous construction device for the tower, beam, and cable of a steel-concrete composite cable-stayed bridge, comprising a shell foundation pier (1), characterized in that, The foundation pier (1) has an integrally formed foundation platform (2) at its top. Multiple bridge piers (3) are poured on the top of the foundation platform (2) with concrete. The top of the multiple bridge piers (3) is fixed with the same foundation beam (4). Both sides of the multiple bridge piers (3) are provided with diagonal bracing columns (5) for supporting the foundation beam (4), and the top of the diagonal bracing columns (5) is fixedly connected to the bottom of the foundation beam (4). Two sets of main beam construction structures are respectively set on the top two sides of the foundation beam (4) for connecting the steel box beam to the foundation beam (4); the main beam construction structure includes a sliding platform (6) slidably connected to one side of the top of the foundation beam (4), the outer wall of the foundation beam (4) is slidably fitted with a beam construction frame (8), and the sliding platform (6) is located inside the beam construction frame (8). The inner walls of the two sides of the beam construction frame (8) that are close to each other are fixed with connecting flanges (9) by bolts. The side of the connecting flange (9) close to the sliding platform (6) is welded with a fixed shaft (10) located above the foundation beam (4), and one end of the fixed shaft (10) is welded to one side of the sliding platform (6). The outer wall of the fixed shaft (10) is rotatably fitted with rollers (11) to facilitate the movement of the sliding platform (6) and the beam construction frame (8). The top of the sliding platform (6) is equipped with a crane (7), and one side of the sliding platform (6) is equipped with two grooves (40), and the grooves (40) cooperate with the inclined construction structure. The main tower construction structure is set on the top of the foundation beam (4) and is used for the construction of the main tower. The main tower construction structure includes a tower crane (27) fixed to the top of the foundation beam (4) by bolts. Two main tower bases (25) are fixed on the top of the foundation beam (4), and the tower crane (27) is located between the two main tower bases (25). The top of the two main tower bases (25) is welded with a main tower frame (26). The outer wall of the two main tower frames (26) is fitted with a main tower construction frame (31). The two main tower construction frames (31) are welded to the same transverse connecting plate (30) on the side that is close to each other. The top outer wall of the tower crane (27) is fitted with a lifting frame (28). The lifting frame (28) is located above the transverse connecting plate (30). The lifting frame (28) is fixedly connected to the transverse connecting plate (30) by multiple sets of tension structures. The inclined construction structure is set on both sides of the top of the foundation beam (4). The inclined construction can be carried out whenever a part of the main beam and main tower construction is completed. The inclined construction structure can form an inclined support between the main beam and the main tower.

2. The synchronous construction device for steel-concrete composite beam cable-stayed bridge towers, beams, and cables according to claim 1, characterized in that, The tension structure includes a second connector (36) welded to the top of the transverse connecting plate (30), a rope (35) fixed to the top of the second connector (36), a first connector (34) fixed to the top of the rope (35), a screw (33) welded to the top of the first connector (34), the top end of the screw (33) penetrating the lifting frame (28), and a hexagonal nut (32) threadedly connected to the screw (33) at the top of the lifting frame (28).

3. The synchronous construction device for steel-concrete composite beam cable-stayed bridge towers, beams, and cables according to claim 2, characterized in that, The cable-stayed construction structure includes four lower cable-stayed seats (39) bolted to both sides of the top of the foundation beam (4), and upper cable-stayed seats (37) bolted to both sides of the two main towers (26). Cable-stayed cables (38) are provided between the lower cable-stayed seats (39) and the upper cable-stayed seats (37) on the same side.

4. The synchronous construction device for steel-concrete composite beam cable-stayed bridge towers, beams, and cables according to claim 3, is characterized in that, The top of the foundation beam (4) is provided with a movable structure, which is used to drive the main beam construction structure to move. The movable structure includes four slide rails (17) fixed to the top of the foundation beam (4) by bolts. The bottom of the sliding platform (6) is provided with multiple sliders (18), and the sliders (18) slide with the slide rails (17). The four slide rails (17) are in pairs, and the same sliding plate (20) is slidably connected between two adjacent slide rails (17). Multiple first slots (19) are provided on the side of the two adjacent slide rails (17) that are close to each other. Both ends of the sliding plate (20) are provided with The first slide groove (21) is provided with a first trapezoidal pin (22) that engages with the first slot (19) in both first slide grooves (21), and the inclined surface of the first trapezoidal pin (22) faces the position of the sliding platform (6). A first spring (23) is fixed on one side of the inner wall of the first slide groove (21). The end of the first spring (23) near the slide rail (17) is fixedly connected to the first trapezoidal pin (22). The sliding plate (20) near the sliding platform (6) is fixed with a second jack (24) by bolts, and one end of the piston rod of the second jack (24) is fixedly connected to one side of the sliding platform (6).

5. The synchronous construction device for steel-concrete composite beam cable-stayed bridge towers, beams, and cables according to claim 4, characterized in that, The slide rail (17) is assembled from multiple track segments, and the bottom end of the main tower base (25) is fixedly connected through the foundation beam (4) and to the top of the corresponding pier (3).

6. The synchronous construction device for steel-concrete composite beam cable-stayed bridge towers, beams, and cables according to claim 5, is characterized in that, The bottom inner wall of the beam construction frame (8) is fixed with multiple moving platforms (12) by bolts. A sliding block (14) is slidably connected inside the moving platform (12). A first jack (13) is fixed to one side inner wall of the moving platform (12) by bolts. The output shaft of the first jack (13) is fixedly connected to one side of the sliding block (14). A U-shaped frame (15) is welded to the top of the sliding block (14). Multiple guide wheels (16) are rotatably connected inside the U-shaped frame (15).

7. The synchronous construction device for steel-concrete composite beam cable-stayed bridge towers, beams, and cables according to claim 6, characterized in that, The outer wall of the fixed shaft (10) is provided with a plurality of second sliding grooves (41), and a second trapezoidal pin (42) is slidably connected in each of the plurality of second sliding grooves (41). The second trapezoidal pin (42) is made of metal. The inner wall of the roller (11) is provided with a plurality of second slots (43) that engage with the second trapezoidal pin (42). A plurality of second springs (44) are fixed on one side of the inner wall of the second sliding groove (41). One end of the plurality of second springs (44) is fixedly connected to the second trapezoidal pin (42). An electromagnet (29) is fixed on one side of the inner wall of the second sliding groove (41), and a magnetic attraction force is generated between the electromagnet (29) and the second trapezoidal pin (42).

8. The method of using the synchronous construction device for steel-concrete composite beam cable-stayed bridge towers, beams, and cables according to claim 7, characterized in that, Includes the following steps: S1. First, when constructing the main beam, the second jack (24) is activated to extend one end of the beam construction frame (8) to the outside of the foundation beam (4). The precast steel box beam is hoisted into the beam construction frame (8) by the crane (7), and the steel box beam is located above multiple U-shaped frames (15). The sliding block (14) and the U-shaped frame (15) are moved by the first jack (13) to align the steel box beam with the foundation beam (4). Then, the steel box beam is pulled towards the foundation beam (4) by the crane (7) to complete the assembly of the steel box beam and the foundation beam (4). S2. Then, during the construction of the main beam, the main tower (26) is hoisted to the top of the main tower base (25) by the tower crane (27), so that the main tower base (25) and the main tower (26) are connected. Then the tower crane (27) rises by itself, and the top of the tower crane (27) drives the main tower construction frame (31) to rise through the horizontal connecting plate (30). The main tower construction frame (31) can cover the main tower (26). Then concrete is poured into the main tower (26) through the main tower construction frame (31) so that the main tower base (25) and the main tower (26) form an integral whole. S3. Secondly, after a portion of the main tower (26) and the steel box girder are completed, the lower inclined tie rod (39) and the upper inclined tie rod (37) are connected to the steel box girder and a portion of the main tower (26) respectively. The inclined tie rod between the steel box girder and the main tower is completed through the cooperation between the lower inclined tie rod (39), the upper inclined tie rod (37) and the inclined cable (38). After the inclined cable (38) is installed, the construction of the main girder and the main tower can be carried out again. S4. Finally, when the main beam is constructed again, as the piston rod of the second jack (24) extends and contracts, it can continuously move the sliding platform (6) and the beam construction frame (8) toward one end of the foundation beam (4), thereby completing the construction of the main beam. Whenever the main beam and the main tower are constructed to a certain extent, the upper inclined plate (37), the inclined cable (38) and the lower inclined plate (39) can be installed between the main beam and the main tower, so that the main beam, the main tower and the inclined cable (38) are constructed simultaneously.

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