Cable bent tower suitable for dismantling old arch bridge with structural damage through cable-stayed buckling and hanging method

Abstract

The utility model discloses a cable bent tower suitable for dismantling an old arch bridge with structural damage through a cable-stayed buckling method, and belongs to the field of cable bent towers, the cable bent tower comprises two groups of tower frame mechanisms, the two tower frame mechanisms are fixedly connected through a transverse link, each tower frame mechanism comprises a standard knot, and the surface of each standard knot is fixedly connected with a cross beam; through cooperative use of all the devices, the device is simple in structure and convenient to operate, the base, the standard section and the buckling section mechanism are adopted, transverse connection is added at the corresponding height, the sections are connected through flange plates, the requirement for the bearing capacity performance of the inhaul cable in the cable-stayed buckling system is met, meanwhile, rapid assembly and disassembly can be carried out, and the construction cost is reduced. The base, the standard knot, the buckling and hanging knot mechanism, the cross beam and the transverse link are prefabricated in a steel structure processing factory, and the processing precision and quality of the steel structure are higher than those of field processing.

Description

Technical Field

[0001] This utility model relates to the field of cable tower technology, specifically a cable tower suitable for dismantling structurally damaged old arch bridges using the cable-stayed fastening method. Background Technology

[0002] To extend the service life of old arch bridges or improve their load-bearing capacity, a hybrid structural design may be adopted, combining the characteristics of arch bridges with those of suspension or cable-stayed bridges. This may involve the installation of pylons, which are typically used to secure high-strength steel cables. These cables can provide additional support, help distribute the load, and reduce pressure at the arch foot, thereby protecting and strengthening the original arch bridge structure.

[0003] Currently, some old bridges, due to design flaws or outdated construction techniques, inevitably suffer structural damage as they age and are classified as dangerous bridges. To avoid the danger of bridge collapse, the most direct solution is demolition and reconstruction. For the demolition of the main arch ring of a deck arch bridge, the cantilever demolition method can be used to dismantle the bridge segment by segment. The cable-stayed system consists of a cable-stayed system, an anchoring system, and cables. The cable-stayed system is often a temporary steel tower, so the tower needs to have certain strength and rigidity. To ensure the rapid and safe demolition of old arch bridges, the control of the tower installation and demolition schedule is also particularly important.

[0004] Therefore, this utility model provides a cable tower suitable for dismantling structurally damaged old arch bridges using the cable-stayed fastening method, in order to solve the above-mentioned problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This invention provides a cable tower suitable for dismantling structurally damaged old arch bridges using the cable-stayed method, aiming to solve the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a cable tower suitable for dismantling structurally damaged old arch bridges using the cable-stayed fastening method, comprising a tower mechanism, wherein the tower mechanism is configured in two sets, and the two tower mechanisms are fixedly connected by a transverse connection. The tower mechanism includes a standard section, a crossbeam is fixedly connected to the surface of the standard section, an anchor beam is fixedly connected to the surface of the crossbeam, a fastening section mechanism is fixedly connected to the surface of the anchor beam, the fastening section mechanism includes a horizontal brace, the bottom of the horizontal brace is fixedly connected to the surface of the anchor beam, both ends of the horizontal brace are fixedly connected to a tower support column segment, the middle of the tower support column segment is fixedly connected to a diagonal brace, and a short steel pipe is fixedly connected to the surface of the transverse connection.

[0009] As a preferred technical solution of this application, the top of the tower mechanism is fixedly connected to a cable-stayed load-bearing beam, and the cable-stayed load-bearing beam is arranged in two sets side by side.

[0010] As a preferred technical solution of this application, a base is fixedly installed at the bottom of the standard section, and a base plate is fixedly connected to the bottom of the base.

[0011] As a preferred technical solution of this application, anchor rods are welded to both sides of the upper surface of the base plate, and a top plate is welded to the outer surface of the anchor rods.

[0012] As a preferred technical solution of this application, the outer surface of the anchor rod is threaded with a nut A, the nuts A are stacked in two groups, and seamless steel pipes are welded to both sides of the bottom of the top plate, the seamless steel pipes being coaxial with the anchor rod.

[0013] As a preferred technical solution of this application, the upper surface of the base plate is fixedly connected with stiffening rib A, the side of stiffening rib A is fixedly connected with stiffening rib B, and the middle part of the base plate is fixedly connected with a column steel pipe.

[0014] As a preferred technical solution of this application, a positioning plate is welded to the bottom of the outer surface of the anchor rod, and a B nut is threaded onto the surface of the anchor rod.

[0015] (III) Beneficial Effects

[0016] This utility model has a simple structure and is easy to operate. It adopts a base, standard section, and fastening section mechanism, and adds lateral connections at the corresponding heights. The sections are connected by flanges. While meeting the load-bearing capacity performance requirements of the cables in the cable-stayed system, it can be quickly assembled and dismantled to shorten the overall bridge demolition period. The base, standard section, fastening section mechanism, crossbeam, and lateral connections are prefabricated in the steel structure processing plant. The processing precision and quality of the steel structure are higher than those of on-site processing, and no on-site welding is required. It has high strength and good stability, and can meet the cable fastening load-bearing capacity requirements when using the cable-stayed method to demolish old arch bridges with structural damage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a cable tower suitable for the cable-stayed method of removing structural damage from an old arch bridge.

[0018] Figure 2 This is a schematic diagram of the overall side structure of a cable tower used for removing structural damage from an old arch bridge using the cable-stayed method.

[0019] Figure 3 This is a structural schematic diagram of a standard section of a cable tower used in the cable-stayed method for removing structural damage from old arch bridges.

[0020] Figure 4 This is a schematic diagram of the crossbeam in the pylon of a cable-stayed bridge suitable for removing structural damage from an old arch bridge using the cable-stayed fastening method.

[0021] Figure 5 This is a structural schematic diagram of a pylon column segment suitable for the cable-stayed method of removing structural damage from an old arch bridge.

[0022] Figure 6 This is a schematic diagram of a pylon brace for a cable-stayed bridge used in the cable-stayed method for removing structural damage to an old arch bridge.

[0023] Figure 7 This is a schematic diagram of the base of a cable tower used for removing structural damage from an old arch bridge using the cable-stayed method.

[0024] Figure 8 This is a schematic diagram of a steel pipe structure for the central column of a cable tower, suitable for removing structural damage from an old arch bridge using the cable-stayed suspension method.

[0025] In the picture:

[0026] 1. Lateral connection; 2. Standard section; 3. Crossbeam; 4. Anchor beam; 5. Horizontal connection; 6. Cable-stayed load-bearing beam; 7. Base; 8. Base plate; 9. Anchor bolt; 10. Top plate; 11. Nut A; 12. Seamless steel pipe; 13. Stiffening rib A; 14. Stiffening rib B; 15. Positioning plate; 16. Nut B; 17. Tower support column segment; 18. Diagonal brace; 19. Column steel pipe; 20. Short steel pipe section. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] This utility model provides a cable tower suitable for dismantling structurally damaged old arch bridges using the cable-stayed suspension method, such as... Figures 1-8As shown, this type of cable tower, suitable for dismantling structurally damaged old arch bridges using the cable-stayed anchoring method, includes a tower mechanism. The tower mechanism is configured in two sets, with the two tower mechanisms fixedly connected by a transverse connection 1. Each tower mechanism includes a standard section 2, with a crossbeam 3 fixedly connected to its surface. An anchor beam 4 is fixedly connected to the surface of the crossbeam 3, and an anchoring section mechanism is fixedly connected to the surface of the anchor beam 4. The anchoring section mechanism includes a horizontal bracing 5, with its bottom fixedly connected to the surface of the anchor beam 4. Both ends of the horizontal bracing 5 are fixedly connected to anchoring columns. Segment 17, the middle of the tower column segment 17 is fixedly connected with a diagonal brace 18, and the surface of the transverse connection 1 is fixedly connected with a short steel pipe 20. The crossbeam 3 is welded from steel plates, and the bolt holes of the flange at both ends are opened according to the plane position of the standard segment 2. The transverse connection 1 of different lengths is assembled according to the width of the bridge. When the length is insufficient, it is extended by short steel pipe 20. The extended section of short steel pipe 20 is pre-welded to the standard segment 2 in the steel structure processing plant. The extended section of short steel pipe 20 is connected to the transverse connection 1 through a flange.

[0029] The top of the tower structure is fixedly connected to the cable-stayed load-bearing beam 6. The cable-stayed load-bearing beam 6 is arranged in two sets side by side. When the cable-stayed crane is needed for the dismantling of the entire arch bridge, the cable-stayed load-bearing beam 6 and other necessary equipment can be installed at the top of the tower.

[0030] A base 7 is fixedly installed at the bottom of the standard section 2, and a base plate 8 is fixedly connected to the bottom of the base 7. A single tower is composed of multiple standard sections 2. When it is necessary to hook the cable at a corresponding height, the standard section 2 at the corresponding height is replaced with a hooking section. A crossbeam 3 is added between the lower part of the hooking section and the next standard section 2 to place the anchor beam 4 for anchoring the cable.

[0031] Anchor bolts 9 are welded to both sides of the upper surface of the base plate 8, and a top plate 10 is welded to the outer surface of the anchor bolts 9.

[0032] The outer surface of the anchor rod 9 is threaded with an A nut 11, which is stacked in two sets. Seamless steel pipes 12 are welded to both sides of the bottom of the top plate 10. The seamless steel pipes 12 are coaxial with the anchor rod 9 and their function is to prevent the top plate 10 from deforming when the anchor rod 9 is pre-tightened.

[0033] The upper surface of the base plate 8 is fixedly connected with stiffening rib A 13, the side of stiffening rib A 13 is fixedly connected with stiffening rib B 14, the middle of the base plate 8 is fixedly connected with column steel pipe 19, the upper end of column steel pipe 19 is welded with flange, and the base 7 is connected to the reinforced concrete foundation by anchor rod 9 and nut A 11.

[0034] A positioning plate 15 is welded to the bottom of the outer surface of the anchor rod 9, and a B nut 16 is threaded onto the surface of the anchor rod 9. The positioning plate 15 is fixed to the anchor rod 9 by the B nut 16 to enhance its stability.

[0035] Specifically, the base 7, standard section 2, fastening section mechanism, crossbeam 3, and transverse connection 1 are prefabricated in the steel structure processing plant and transported to the site. At the same time, according to the plan layout of the cable-stayed ...

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cable tower suitable for dismantling structurally damaged old arch bridges using the cable-stayed suspension method, comprising a tower structure, characterized in that: The tower mechanism is set in two groups, and the two tower mechanisms are fixedly connected by a transverse connection (1). The tower mechanism includes a standard section (2), and a crossbeam (3) is fixedly connected to the surface of the standard section (2). An anchor beam (4) is fixedly connected to the surface of the crossbeam (3). A fastening section mechanism is fixedly connected to the surface of the anchor beam (4). The fastening section mechanism includes a horizontal connector (5). The bottom of the horizontal connector (5) is fixedly connected to the surface of the anchor beam (4). Both ends of the horizontal connector (5) are fixedly connected to a tower support column segment (17). A diagonal brace (18) is fixedly connected to the middle of the tower support column segment (17). A short steel pipe (20) is fixedly connected to the surface of the transverse connection (1).

2. A cable tower for dismantling structurally damaged old arch bridges using the cable-stayed suspension method as described in claim 1, characterized in that: The top of the tower mechanism is fixedly connected to a cable-stayed load-bearing beam (6), and the cable-stayed load-bearing beam (6) is arranged in two groups side by side.

3. A cable tower for dismantling structurally damaged old arch bridges using the cable-stayed anchoring method as described in claim 1, characterized in that: A base (7) is fixedly installed at the bottom of the standard section (2), and a base plate (8) is fixedly connected to the bottom of the base (7).

4. A cable tower suitable for dismantling structurally damaged old arch bridges using the cable-stayed suspension method as described in claim 3, characterized in that: Anchor rods (9) are welded to both sides of the upper surface of the base plate (8), and a top plate (10) is welded to the outer surface of the anchor rods (9).

5. A cable tower for dismantling structurally damaged old arch bridges using the cable-stayed suspension method as described in claim 4, characterized in that: The outer surface of the anchor rod (9) is threaded with an A nut (11), and the A nuts (11) are stacked in two groups. Seamless steel pipes (12) are welded to both sides of the bottom of the top plate (10), and the seamless steel pipes (12) are coaxial with the anchor rod (9).

6. A cable tower for dismantling structurally damaged old arch bridges using the cable-stayed suspension method as described in claim 3, characterized in that: The upper surface of the base plate (8) is fixedly connected with stiffening rib A (13), the side of stiffening rib A (13) is fixedly connected with stiffening rib B (14), and the middle part of the base plate (8) is fixedly connected with a steel pipe column (19).

7. A cable tower for dismantling structurally damaged old arch bridges using the cable-stayed suspension method as described in claim 4, characterized in that: A positioning plate (15) is welded to the bottom of the outer surface of the anchor rod (9), and a B nut (16) is threaded onto the surface of the anchor rod (9).

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