Stiffening system suitable for tensioning and anchoring inhaul cable
By setting up a stiffening module on the main structure of the bridge, a figure-shaped structure is formed, and the arc transition design of the anchor plate extension plate is solved, and the contradiction between stress diffusion and tension space in cable anchoring technology is achieved, which strengthens the stiffness of the web and meets the needs of different anchoring angles and tension space.
Patent Information
- Application Number
- CN202421490938.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-06-27
AI Technical Summary
In the existing cable anchoring technology, the contradiction between stress diffusion and tension space near the cable anchor box is difficult to resolve, resulting in insufficient stiffness outside the web surface, stress concentration or cable inability to tension.
A stiffening system suitable for cable tension anchoring is designed. By setting up a stiffening module on the main structure of the bridge, including the first support stiffening and the second support stiffening, a figure-shaped structure is formed to avoid stress concentration caused by the cut-off of the pressure-bearing anchor plate, and gradually transition stiffness through the arc transition between the anchor plate extension plate and the pressure-bearing anchor plate.
It effectively avoids stress concentration of cable anchor plates and webs, strengthens the outer stiffness of the web surface of the cable anchor box and the stress dispersion of the anchor plates, and meets the needs of different cable anchor angles and tension spaces.
Smart Images
Figure CN222834732U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge engineering, in particular to a reinforcement system suitable for cable tensioning and anchoring. Background Art
[0002] At present, the anchoring of cable structures such as cables or suspenders is mainly done by anchoring with the help of the webs, crossbeams and other internal main longitudinal and transverse force transmission plates of the main structure (steel beams, steel arches or steel towers, etc.). Common anchoring forms include anchor boxes, anchor beams, anchor pipes, etc. Among them, the cable anchor box often relies on the web or partition to directly transfer the cable force to the web or partition. The cable anchor structure evenly transfers the cable force to the main structure, which is the key force-bearing part and directly affects the safety of the entire structure.
[0003] However, the cable force is usually large and the stress is concentrated, and there is often a large stress concentration in the web at the anchor box cutoff. However, considering the cable tensioning space and the anchor plate angle, it is often impossible to set the web stiffening in the traditional vertical and horizontal grid method, which will lead to insufficient out-of-plane stiffness of the web, stress concentration or the inability to tension the cable.
[0004] In summary, how to deal with the contradiction between stress diffusion and tensioning space near the cable anchor box is a thorny problem encountered in bridge design. Utility Model Content
[0005] The utility model aims to overcome the contradiction between the stress diffusion and the tensioning space near the cable anchor box and to provide a reinforcement system suitable for cable tensioning anchoring.
[0006] The purpose of the utility model can be achieved through the following technical solutions:
[0007] A stiffening system suitable for cable tensioning and anchoring, which is arranged on a main bridge structure, wherein the main bridge structure comprises a top plate, a bottom plate and a web connected between the top plate and the bottom plate, wherein a cable anchor box connected to the cable and a stiffening module for supporting stiffening are arranged on the web;
[0008] The cable anchor box comprises a pressure-bearing anchor plate arranged perpendicular to the cable, and both ends of the pressure-bearing anchor plate are respectively connected with anchor plate extension plates, and the anchor plate extension plates extend to the top plate and the bottom plate respectively;
[0009] The reinforcement module comprises a first support reinforcement arranged at the upper end of the pressure anchor plate and a second support reinforcement arranged at the lower end, and the first support reinforcement and the second support reinforcement are arranged in an eight-shaped shape.
[0010] Furthermore, the anchor plate extension plate and the pressure-bearing anchor plate are transitioned through an arc, and the stiffness gradually transitions, thereby avoiding stress concentration caused by truncation of the pressure-bearing anchor plate.
[0011] Furthermore, the anchor plate extension plate has a thickness smaller than that of the pressure-bearing anchor plate.
[0012] Furthermore, the bottom of the pressure-bearing anchor plate is connected to the anchor pad to provide more reliable support and fixation.
[0013] Furthermore, the cable anchor box also includes an anchor pipe and an anchor support plate and an anchor stiffening plate which are sequentially arranged on the outside of the anchor pipe;
[0014] Furthermore, the cable is passed through the anchor pipe and connected to the pressure-bearing anchor plate.
[0015] Further, the first support stiffener and the second support stiffener are independently connected to the pressure anchor plate or the anchor plate extension plate.
[0016] Furthermore, a group of partitions are connected between the top plate and the bottom plate, the partitions are arranged vertically with the web plate, and the pressure anchor plates and the stiffening modules are arranged between the two partitions;
[0017] Furthermore, one end of the first support reinforcement is connected to the pressure anchor plate or the anchor plate extension plate, and the other end is connected to the partition plate.
[0018] Furthermore, the stiffening module also includes a vertical stiffening plate arranged on the web and a transverse stiffening plate vertically connected to the vertical stiffening plate.
[0019] Furthermore, one end of the second support stiffener is connected to the pressure anchor plate or the anchor plate extension plate, and the other end is connected to the vertical stiffening plate or the transverse stiffening plate.
[0020] Furthermore, the cable anchor box and the stiffening module are arranged on one side or on both sides of the web.
[0021] Furthermore, the figure eight arrangement indicates that the first support stiffener and the second support stiffener are not arranged in parallel, and an angle is formed between the two, and the final structure is similar to a trumpet shape.
[0022] Compared with the prior art, the utility model has the following beneficial effects:
[0023] (1) The utility model can avoid stress concentration on the cable anchor plate and the web by providing a stiffening module, thereby enhancing the out-of-plane stiffness of the web of the cable anchor box and the force dispersion effect of the anchor plate, and can also meet the requirements of different cable anchoring angles and tensioning spaces.
[0024] (2) The stiffening system of the utility model can be applied to the situation where the cable is anchored by an anchor box structure and needs to be tensioned at the corresponding end, or the situation where the angle of the cable is large and the angle between the horizontal and vertical stiffening and the anchor plate is too small.
[0025] (3) The anchor plate extension plate and the pressure-bearing anchor plate of the utility model are transitioned through an arc, and the stiffness gradually transitions, thereby avoiding stress concentration caused by the truncation of the pressure-bearing anchor plate.
[0026] (4) The utility model can be arranged on one side or both sides of the web according to the requirements of cable arrangement. When arranged on one side, the cable side is arranged according to the trumpet-shaped stiffening system, and the non-cable side is arranged according to the conventional grid-shaped stiffening system.
[0027] (5) The stiffening system of the present invention can meet the requirements of different cable anchoring angles and tensioning spaces by correspondingly adjusting the angles and positions of the first support stiffening and the second support stiffening. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a schematic diagram of the overall structure of the stiffening system of the utility model.
[0029] Figure 2 This is a schematic diagram of the structure of Example 2 of the utility model.
[0030] Figure 3 for Figure 2 Schematic diagram of the cross section of aa.
[0031] Figure 4 for Figure 2 Schematic diagram of the cross section of bb.
[0032] Figure 5 This is a schematic diagram of the structure of Example 4 of the utility model.
[0033] Figure 6 for Figure 5 Schematic diagram of the cross section of aa.
[0034] Figure 7 for Figure 5 Schematic diagram of the cross section of bb.
[0035] Description of the markings in the figure:
[0036] 1-main structure of the bridge, 11-web, 12-top plate, 13-bottom plate, 14-partition, 2-cable anchor box, 21-pressure anchor plate, 211-anchor plate extension plate, 22-anchor pad, 23-anchor pipe, 24-support plate under anchor, 25-stiffening plate under anchor, 3-stiffening module, 31-first support stiffening, 32-second support stiffening, 33-vertical stiffening plate, 34-transverse stiffening plate, 4-cable. DETAILED DESCRIPTION
[0037] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.
[0038] In the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0040] Embodiment 1:
[0041] This embodiment provides a reinforcement system suitable for cable tensioning and anchoring, which is arranged on the main bridge structure 1. The main bridge structure 1 includes a top plate 12, a bottom plate 13, and a web 11 connected between the top plate 12 and the bottom plate 13, and the web 11 is provided with a cable anchor box 2 connected to the cable 4 and a reinforcement module 3 for supporting reinforcement.
[0042] The cable anchor box 2 includes a pressure-bearing anchor plate 21 vertically arranged with the cable 4 , and anchor plate extension plates 22 are respectively connected to both ends of the pressure-bearing anchor plate 21 , and the anchor plate extension plates 22 extend to the top plate 12 and the bottom plate 13 , respectively.
[0043] The reinforcing module 3 includes a first supporting stiffener 31 arranged at the upper end of the pressure anchor plate 21 and a second supporting stiffener 32 arranged at the lower end. The first supporting stiffener 31 and the second supporting stiffener 32 are arranged in an eight-shaped shape, and the whole presents a trumpet-shaped stiffening system to ensure the operating space for cable tensioning.
[0044] The stiffening module 31 provided in this embodiment can avoid stress concentration on the pressure anchor plate 21 and the web 11, strengthen the out-of-plane stiffness of the web of the cable anchor box 2 and the force dispersion effect of the anchor plate, and also meet the requirements of different cable anchoring angles and tensioning spaces.
[0045] Embodiment 2:
[0046] This embodiment provides a reinforcement system suitable for cable tension anchoring. The difference from Embodiment 1 is that the anchor plate extension plate 22 of this embodiment transitions with the pressure anchor plate 21 through an arc, and the thickness of the anchor plate extension plate 22 is less than the pressure anchor plate 21. The first support stiffener 31 and the second support stiffener 32 are independently welded to the pressure anchor plate 21 or the anchor plate extension plate 22 to disperse the force of the pressure anchor plate 21.
[0047] The cable anchor box 2 of this embodiment also includes an anchor pad 22, an anchor pipe 23, an anchor support plate 24 and an anchor stiffening plate 25. The bottom of the pressure anchor plate 21 is connected to the anchor pad 22 to provide more reliable support and fixation. The anchor support plate 24 and the anchor stiffening plate 25 are sequentially arranged outside the anchor pipe 23, and the cable 4 is passed through the anchor pipe 23 and connected to the pressure anchor plate 21.
[0048] Embodiment 3:
[0049] This embodiment provides a reinforcement system suitable for cable tensioning and anchoring. The difference from Embodiment 2 is that a group of partitions 14 are also connected between the top plate 12 and the bottom plate 13 of this embodiment, and the partitions 14 are arranged vertically with the web 11, and the pressure anchor plate 21 and the reinforcement module 3 are arranged between the two partitions 14. One end of the first support reinforcement 31 is connected to the pressure anchor plate 21, and the other end is connected to the partition 14. Since the position of the cable anchor box 2 at the tensioning end should take into account the tensioning space of the cable, the tensioning space requirement can be met by controlling the minimum distance between the partitions 14.
[0050] The stiffening module 3 further includes a vertical stiffening plate 33 disposed on the web 11 and a transverse stiffening plate 34 vertically connected to the vertical stiffening plate 33, and the vertical stiffening plate 33 and the transverse stiffening plate 34 are arranged in a grid shape. One end of the second support stiffener 32 is connected to the pressure anchor plate 21, and the other end is connected to the vertical stiffening plate 33 or the transverse stiffening plate 34.
[0051] Embodiment 4:
[0052] This embodiment provides a stiffening system suitable for cable tensioning and anchoring. The difference from the first embodiment is that the cable anchor box 2 and the stiffening module 3 of this embodiment are arranged on one side or on both sides of the web 11, that is, the cable anchor box 2 and the stiffening module 3 can be arranged on both sides of the web 11, or the stiffening module 3 can be arranged on one side of the web 11, and the vertical stiffening plate 33 and the transverse stiffening plate 34 are arranged in a grid shape on the other side.
[0053] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.
Claims
1. A stiffening system suitable for cable tensioning and anchoring, arranged on a main bridge structure (1), characterized in that: The main bridge structure (1) comprises a top plate (12), a bottom plate (13), and a web plate (11) connected between the top plate (12) and the bottom plate (13); the web plate (11) is provided with a cable anchor box (2) connected to the cable (4) and a stiffening module (3) for supporting stiffening; The cable anchor box (2) comprises a pressure-bearing anchor plate (21) arranged perpendicular to the cable (4), and anchor plate extension plates (211) are respectively connected to both ends of the pressure-bearing anchor plate (21), and the anchor plate extension plates (211) extend to the top plate (12) and the bottom plate (13) respectively; The stiffening module (3) comprises a first support stiffener (31) arranged at the upper end of the pressure anchor plate (21) and a second support stiffener (32) arranged at the lower end, and the first support stiffener (31) and the second support stiffener (32) are arranged in an eight-shaped configuration.
2. A reinforcement system suitable for cable tensioning and anchoring according to claim 1, characterized in that: The anchor plate extension plate (211) and the pressure-bearing anchor plate (21) transition through an arc.
3. A reinforcement system suitable for cable tensioning and anchoring according to claim 1, characterized in that: The anchor plate extension plate (211) has a thickness smaller than that of the pressure-bearing anchor plate (21).
4. A reinforcement system suitable for cable tensioning and anchoring according to claim 1, characterized in that: The bottom of the pressure-bearing anchor plate (21) is connected to the anchor pad plate (22).
5. A reinforcement system suitable for cable tensioning and anchoring according to claim 1, characterized in that: The cable anchor box (2) further comprises an anchor pipe (23) and an anchor support plate (24) and an anchor stiffening plate (25) which are sequentially arranged outside the anchor pipe (23); The pull cable (4) is inserted into the anchor pipe (23) and connected to the pressure-bearing anchor plate (21).
6. A reinforcement system suitable for cable tensioning and anchoring according to claim 1, characterized in that: The first support stiffener (31) and the second support stiffener (32) are each independently connected to the pressure anchor plate (21) or the anchor plate extension plate (211).
7. A reinforcement system suitable for cable tensioning and anchoring according to claim 1, characterized in that: A group of partitions (14) are also connected between the top plate (12) and the bottom plate (13), the partitions (14) are arranged vertically with the web plate (11), and the pressure anchor plates (21) and the stiffening modules (3) are arranged between the two partitions (14); One end of the first support stiffener (31) is connected to the pressure-bearing anchor plate (21) or the anchor plate extension plate (211), and the other end is connected to the partition plate (14).
8. A reinforcement system suitable for cable tensioning and anchoring according to claim 1, characterized in that: The stiffening module (3) further comprises a vertical stiffening plate (33) arranged on the web (11) and a transverse stiffening plate (34) vertically connected to the vertical stiffening plate (33).
9. A reinforcement system suitable for cable tensioning and anchoring according to claim 8, characterized in that: One end of the second support stiffener (32) is connected to the pressure anchor plate (21) or the anchor plate extension plate (211), and the other end is connected to the vertical stiffener plate (33) or the transverse stiffener plate (34).
10. A reinforcement system suitable for cable tensioning and anchoring according to claim 1, characterized in that: The cable anchor box (2) and the stiffening module (3) are arranged on one side or on both sides of the web (11).