Beam end suspender tensioning device
By designing a beam end boom tensioning device, the use of the penetrating jack and the tensioning casing can achieve efficient tensioning of low-altitude operations, solving the problems of high-altitude operations in the construction of arch bridge booms, improving construction efficiency and safety, strong adaptability, and suitable for small and medium-span arch bridges.
Patent Information
- Application Number
- CN202421681972.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-07-16
AI Technical Summary
In the prior art, arch bridge boom tensioning construction is difficult to carry out in the narrow beam space, high altitude operation is difficult, construction progress is slow, and conventional tools are difficult to adapt, resulting in low construction efficiency and poor safety.
A beam end boom tensioning device is designed, including a tension sleeve, Haval pad, tension rod, a heart-piercing jack, a tension nut, a fork ear and a local stiffening plate. The tensioning of the boom is achieved through low-altitude operation, and the tensioning jack and a tensioning sleeve are used to efficiently control the tensioning force and match it with the original anchor structure, which is highly adaptable.
It realizes efficient tensioning of low-altitude operations, reduces construction difficulty and risks, improves construction efficiency and safety, simplifies construction processes, reduces materials and costs, facilitates post-maintenance, and is suitable for various small and medium-span arch bridges.
Smart Images
Figure CN223134972U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of replacement of arch bridge suspenders, and particularly relates to a device for tensioning suspenders at the beam end. Background Art
[0002] As an important form of bridge structure, arch bridges are widely used in modern transportation construction. The suspenders of arch bridges play an important role in transferring the loads acting on the bridge deck to the main arch, and the tensioning of suspenders is a key control point in the construction process of arch bridges. According to the tensioning position, the tensioning of arch bridge suspenders can be divided into two categories: beam-end tensioning and arch-top tensioning. Among them, the arch-top tensioning process is limited by the difficulty of high-altitude operation and the slow construction progress. For general small and medium-span arch bridges, it is also limited by the small tensioning space at the arch end. Beam-end tensioning is low-altitude operation, which can largely solve the problem of high efficiency and speed, but the space inside the beam is often small, and conventional construction methods and tensioning tools are difficult to adapt. Summary of the Utility Model
[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a beam-end suspender tensioning device with a simple structure that can be mutually matched with the original anchoring structure. It converts the high-altitude operation on the arch into low-altitude operation on the beam, converts the tensioning inside the beam with greater limitations into the tensioning outside the beam with an open working surface. The tension during the tensioning construction process is highly efficient and controllable, the additional structure of the tensioning device is less, and it can be reused for the secondary cable force adjustment of the suspenders and the replacement of suspenders during later maintenance.
[0004] The purpose of the utility model is achieved through the following technical solutions:
[0005] A beam-end suspender tensioning device is used to realize the tensioning of the suspenders arranged at the beam end. One end of the suspender is connected to the main beam through the suspender tensioning end anchor cup. The suspender tensioning device includes a tensioning sleeve, a havering backing plate, a tensioning rod, a jack, a tensioning nut, a fork ear, and a local stiffening plate. The tensioning sleeve is sleeved on the suspender, an anchor pipe is sleeved on the outer wall of the tensioning sleeve, and the local stiffening plate is installed on the outer wall of the anchor pipe. The local clamping plate has a structure that is wider at the upper side and narrower at the lower side, and the wide and narrow parts are transitioned through an inclined plane. Circular backing plates are provided on both sides of the upper part of the local stiffening plate.
[0006] One end of the tensioning sleeve abuts against the suspender tensioning end anchor cup, and a havering backing plate is fixed at the other end. The top of the suspender passes through the havering backing plate. Jacks are symmetrically arranged on both sides of the upper surface of the havering backing plate. One end of the tensioning rod is connected to the local stiffening plate through the fork ear, and the other end passes through the havering backing plate and the jack and is fastened by the tensioning nut.
[0007] Compared with the prior art, the beneficial effects brought by the technical solution of the utility model are:
[0008] 1. Simple structure and convenient installation: The device is reasonably designed with a simple structure, easy to install and operate, significantly improving the convenience of construction.
[0009] 2. Efficient control of tension force: By using the combination of a through-hole jack and a tensioning sleeve, efficient control of the tension force of the suspender can be achieved, ensuring the accuracy and safety of the tensioning construction process.
[0010] 3. Strong adaptability: The device can match the original anchoring structure without major modifications to the existing structure, with strong adaptability, suitable for the construction requirements of various medium and small-span arch bridges.
[0011] 4. Reduce construction difficulty: Convert the high-altitude operation above the arch to the low-altitude operation on the beam, greatly reducing the difficulty and risk of high-altitude operation, and improving construction efficiency and safety.
[0012] 5. Save construction space: Convert the internal tensioning of the beam body to the external tensioning of the beam body, effectively utilizing the construction space and avoiding the inconvenience caused by the narrow internal space of the beam.
[0013] 6. Facilitate later maintenance: The design of the device enables it to be reused during the later adjustment of the suspender cable force and the replacement of the suspender, greatly facilitating the maintenance and upkeep of the bridge.
[0014] 7. Reduce additional structures: The tensioning device has fewer additional structures, simplifying the overall construction process and reducing material and construction costs.
[0015] 8. Improve construction efficiency: The tensioning at the beam end is a low-altitude operation, simple and efficient, helping to speed up the construction progress and shorten the construction period.
[0016] In summary, the beam-end suspender tensioning device provided by the present utility model has significant advantages in improving construction efficiency, reducing construction difficulty, strong adaptability, and facilitating later maintenance. Description of the Drawings
[0017] Figure 1 is a schematic structural diagram of the beam-end suspender tensioning device of the present utility model;
[0018] Figure 2 is a schematic structural diagram of the partial stiffening plate provided by the present utility model. Detailed Embodiment
[0019] The following further elaborates on the present utility model in detail in conjunction with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0020] Please refer to Figure 1 and in combination with Figure 2As shown, a beam end hanger tensioning device of the utility model comprises a Haver pad 1, a tension sleeve 2, a tension rod 3, a fork ear 4, a tension nut 5, a through-hole jack 6, a local stiffening plate 7 and a circular pad 8. One side of the through-hole jack 6 abuts against the upper surface of the Haver pad 1. The bottom of the Haver pad 1 is fixedly connected to the tension sleeve 2. The other end of the tension sleeve 2 abuts against the anchor cup 10 at the tension end of the hanger, thereby transmitting the tension to the hanger. The bottom of the hanger is connected to the main beam through the anchor cup 10 at the tension end. The top of the hanger passes through the Haver pad 1, and the tension sleeve 2 is sleeved on the hanger. The top of the through-hole jack 6 abuts against the tension nut 5. The tension nut 5 is threadedly connected to the tension rod 3. The bottom of the tension rod 3 is provided with a fork ear 4, which is connected to the local stiffening plate 7 through the fork ear 4. In order to make the tension transmission more uniform, circular pads 8 are provided on both sides of the local stiffening plate 7. The local stiffening plate 7 is a permanent structure and is welded to the anchor pipe 9 by full penetration welding, so as to facilitate the later adjustment of the suspension rod cable force and the replacement of the suspension rod. The local clamping plate 7 is a structure with a wide upper side and a narrow lower side, and the wide and narrow parts are transitioned by an inclined surface. In this embodiment, there are two local clamping plates 7, which are symmetrically arranged on both sides of the anchor pipe 9. The fork ear 4 is connected to the circular pad 8 by the pin of the fork ear, and the circular pad is used to reduce the stress of the local stiffening plate 7.
[0021] When in use, the through-hole jack 6 is used to exert force on the Haver pad 1 and the tension sleeve 2 to apply tension to the suspender rod, and the tension is transmitted to the tension rod 3 after the tension nut 5 is tightened, and finally transmitted to the local stiffening plate 7 and the anchor pipe 9 through the fork ear 4 at the end of the tension rod. After the tensioning construction is completed, all devices except the local stiffening plate can be removed. The utility model has a reasonable design and is easy to use. The end of one side of the tension rod is a screw structure and the other side is a fork ear structure. The space during the tensioning construction of the suspender rod is no longer limited, and the operation is simple and efficient.
[0022] The present invention is not limited to the implementation methods described above. The above description of the specific implementation methods is intended to describe and illustrate the technical solution of the present invention. The above specific implementation methods are merely illustrative and not restrictive. Without departing from the scope of protection of the present invention and the claims, ordinary technicians in this field can also make many forms of specific changes under the enlightenment of the present invention, which all fall within the protection scope of the present invention.
Claims
1. A beam-end hanger tensioning device for realizing the tensioning of the hanger arranged at the beam end, one end of the hanger is connected to the main beam through the hanger tensioning end anchor cup, and is characterized in that, The suspension rod tensioning device includes a tensioning sleeve, a Haver pad, a tensioning rod, a through-hole jack, a tensioning nut, a fork ear, and a local stiffening plate. The tensioning sleeve is sleeved on the suspension rod, an anchor pipe is sleeved on the outer wall of the tensioning sleeve, and the local stiffening plate is installed on the outer wall of the anchor pipe. The local clamping plate is a structure with a wide upper side and a narrow lower side, and the wide and narrow parts are transitioned through an inclined surface. Circular pads are provided on both sides of the upper part of the local stiffening plate. One end of the tensioning sleeve rests on the anchor cup at the tensioning end of the hanger, and a Havers pad is fixed on the other end. The top of the hanger passes through the Havers pad, and through-hole jacks are symmetrically provided on both sides of the upper surface of the Havers pad. One end of the tensioning rod is connected to the local stiffening plate through a fork ear, and the other end passes through the Havers pad and the through-hole jack and is fastened by a tensioning nut.