Hoop for replacing suspender arch rib
By designing a steel clamp structure during the replacement of the steel arch bridge hoist boom, the shoulder pole beam is prevented from sliding down, the problem of unstable boom replacement is solved, and higher structural safety and cost-effectiveness are achieved.
Patent Information
- Application Number
- CN202421150342.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-24
AI Technical Summary
During the replacement of steel arch bridge hoist boom, the existing technology is difficult to effectively prevent the shoulder pole beam from sliding down, resulting in unstable replacement of the hoist boom and affecting structural safety.
A steel hoop structure is designed. By welding a triangular steel pad plate on the arch rib and laying a shoulder pole beam on it, the steel hoop is used to prevent the shoulder pole beam from sliding down, ensuring the stability of the boom replacement process.
This technical method improves the stability and safety of the boom replacement process, meets the requirements of strength, stiffness and stability, and reduces costs, is easy to install and disassemble, and is suitable for reuse.
Smart Images
Figure CN222435105U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an auxiliary device for replacing a hanger rod of a steel arch bridge in a bridge project. Background Art
[0002] At the beginning of the 21st century, many tied arch bridges were built on highways and railways in my country. Such bridges mainly connect beams and arches through hangers to form a beam-arch combination system. The hangers are the key load-bearing components that transfer the dynamic load and dead load of the beam to the arch rib. After decades of operation, the hangers and anchor heads of such bridges have suffered from diseases of varying degrees, which seriously threaten the structural safety of tied arch bridges. In recent years, many arch bridge hanger fracture accidents have occurred in my country, which has made people pay more attention to and reflect on the health of arch bridge hangers. By setting a shoulder beam (H-shaped steel cross beam) at the top of the arch rib and the bottom of the beam, equipped with anchor pads and matching nuts, temporary hangers (finished rolled threaded steel, model can be φ40mm, PSB1360) are tensioned and anchored on the shoulder beam from both sides of the bridge, and the temporary hanger cable is tensioned before the old hanger cable is disconnected, so as to transfer the old hanger cable force to the temporary hanger cable. Utility Model Content
[0003] The technical problem to be solved by the utility model is: adopting a support system to support and replace, designing a clamp on the steel pipe arch rib, welding a triangular steel pad on the clamp, and placing the shoulder pole beam (H-shaped steel beam) on the triangular steel pad. The steel clamp can prevent the shoulder pole beam from sliding down, and can meet the requirements of strength, rigidity and stability. At the same time, it has low cost, is safe and reliable, is easy to install and disassemble, and can be reused.
[0004] The technical solution adopted by the utility model to solve the above technical problems is: the support system adopts a bag suspension support, and the cross beam on the arch is connected to the steel arch rib through a steel hoop and an adjustment platform. The steel hoop can be made of a 1cm thick steel plate with a width of 50cm. The design size of the steel hoop is 1cm larger than the arch rib structure (for easy installation). Since the outer contour line of the arch rib is a circular arc connected to a straight line, a 1cm thick and 20cm long rubber plate is set at the junction of the circular arc section and the straight line section on the inner side of the steel hoop. The replacement of the suspension rod cable is based on the principle of replacing one, removing one old suspension rod, and installing one new suspension rod.
[0005] Compared with the prior art, the utility model has the advantages of low cost, convenient construction, clear force, easy promotion, and no need to interrupt traffic.
[0006] The utility model device has good stability, high safety, low cost, and is easy to install and disassemble. The utility model device has been used many times in actual projects and has been proven to meet the requirements of strength, rigidity, and stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1. Schematic diagram of the integral replacement section of the steel arch bridge hanger of the utility model.
[0008] Figure 2 . A cross-sectional view of the steel arch bridge hanger support steel hoop replacement structure of the utility model.
[0009] Figure 3 . Side view of the steel arch bridge hanger support and steel hoop replacement structure of the utility model. DETAILED DESCRIPTION
[0010] The replacement of the boom cable is based on the principle of replacing one, removing one old boom and installing a new boom.
[0011] The utility model is further described in detail below in conjunction with the drawings.
[0012] Figure 1 The schematic diagram of the integral replacement cross section of the steel arch bridge suspender of the utility model. By setting a shoulder beam (H-shaped steel cross beam) (2, 4) at the top and bottom of the arch rib (1), respectively, and equipped with an anchor plate (6) and a matching nut (7), a temporary suspender (3) (finely rolled threaded steel, the model can be φ40mm, PSB1360) is tensioned and anchored on the shoulder beam (2, 4) from both sides of the bridge. Before disconnecting the old suspender cable, the temporary suspender cable (3) is tensioned to transfer the old suspender cable force to the temporary suspender cable (3). The cross beam (2) on the arch is connected to the steel arch rib (1) through a steel clamp and an adjustment platform. (5) is the main longitudinal beam of the arch bridge, which is connected to the arch rib (1) through a suspender.
[0013] Figure 2 The utility model is a cross-sectional view of the steel hoop structure of the steel arch bridge hanger support replacement. The steel hoop (2) is made of a 1 cm thick steel plate with a width of 50 cm. The design size of the steel hoop (2) is 1 cm larger than the arch rib (1) structure (for ease of installation). A 1 cm thick rubber plate (3) is provided between the steel hoop and the arch rib. The steel hoop (2) is divided into an upper and lower part, and the upper and lower parts are connected by a flange and bolts. A 1 cm gap (7) is left between the upper and lower parts of the steel hoop (2). The flange is welded with a 2 cm splicing plate (6) and 4 upper and lower stiffening plates (4). The upper and lower splicing plates (6) are connected by 10.9 grade M22 bolts (5).
[0014] Figure 3The utility model is a side view of the steel arch bridge hanger support steel hoop structure. The steel hoop (2) is made of a 1 cm thick steel plate with a width of 50 cm. The design size of the steel hoop (2) is 1 cm larger than the arch rib (1) structure (for ease of installation). A 1 cm thick rubber plate (3) is provided between the steel hoop and the arch rib. The steel hoop (2) is divided into an upper and lower part, and the upper and lower parts are connected by a flange and bolts. A 1 cm gap (7) is left between the upper and lower parts of the steel hoop (2). The flange is made of a 2 cm splicing plate (6) and four upper and lower 2 cm thick stiffening plates (4) welded together. The upper and lower splicing plates (6) are connected by 10.9 grade M22 bolts (5).
Claims
1. A method for replacing a boom arch rib clamp, characterized in that: It includes a steel hoop made of a 1 cm thick steel plate and 50 cm wide, wherein the steel hoop is divided into an upper and a lower part, and the upper and lower parts are connected by a flange and bolts; The flange is welded by a 2 cm thick splicing plate and four upper and lower stiffening plates with a thickness of 2 cm, and the upper and lower splicing plates are connected by 10.9 grade M22 bolts; A 1 cm thick rubber plate is arranged on the inner side of the steel hoop. The design size of the steel hoop is 1 cm larger than the arch rib structure for easy installation, and a 1 cm gap is left between the upper and lower parts.
2. The method for replacing the suspender rod arch rib clamp according to claim 1, characterized in that: The upper and lower parts of the steel hoop are connected by four bolts.
3. The method for replacing the suspender rod arch rib clamp according to claim 1, characterized in that: The length of the rubber sheet is 20 cm.
4. The method for replacing the suspender rod arch rib clamp according to claim 1, characterized in that: The steel hoop is used to support the shoulder pole beam, and the shoulder pole beam is placed on the steel hoop.