Cable-stayed bridge cable anchoring structure

Abstract

The utility model provides a cable -stayed bridge cable anchoring structure relates to cable -stayed bridge cable anchoring structure technical field, including fixed bottom plate and steel strand, still including locking piece setting in one side of fixed bottom plate is used for to the self -lock clamping of steel strand, first clamping jaw sets up in the outside of steel strand, clamping piece sets up in one side of fixed bottom plate, through the third rotating arm horizontal of this device to the inside and no remaining direction component force, form mechanical self -locking state, need not additional external force can maintain fixed, utilize structure self geometry characteristic realizes stable self -locking, avoid because vibration, load fluctuation etc. Factor leads to steel strand slack or slip, ensure that anchoring is long -term reliable, and compact structure, convenient operation is applicable to bridge etc. The scene that needs high stability anchoring.

Description

Technical Field

[0001] This utility model relates to the technical field of cable anchorage structure for cable-stayed bridges, and in particular to a cable anchorage structure for cable-stayed bridges. Background Technology

[0002] BIM-based cable-stayed bridge anchorage structures are a digital solution that applies Building Information Modeling (BIM) technology to the entire lifecycle of cable-stayed bridge anchorage structures. Through parametric modeling, it integrates information such as the geometric dimensions, material properties, mechanical performance, and construction techniques of the anchorage structure to form a three-dimensional digital model. In the design phase, it can intuitively present structural details, detect component collisions in advance, and optimize structural performance by combining finite element analysis. In the construction phase, it can accurately guide installation and simulate the construction process to improve accuracy and efficiency. In the operation and maintenance phase, it can monitor the structural status in real time and record maintenance information, realizing integrated management from design to operation and maintenance, significantly enhancing the reliability, safety, and lifecycle management efficiency of the anchorage structure.

[0003] A search revealed that Chinese patent number CN217781731U discloses a BIM-based cable-stayed bridge anchorage structure, including a fixed base plate with an installation cavity inside. The installation cavity contains a winding mechanism with steel strands connected by a connecting rope. A housing is fixedly mounted on the fixed base plate, and the steel strands pass through the housing and extend to the outside. Fixing mechanisms are provided at equal intervals inside the housing to limit their vertical movement and ensure the clamping and fixing effect of the steel strands.

[0004] The aforementioned technology uses multiple hydraulic push rods to clamp and limit the steel strands, which has many drawbacks. The hydraulic system requires multiple components such as oil pumps and oil pipes, resulting in a complex structure that is prone to oil leakage and aging. It also has high maintenance costs and requires regular inspections by professional personnel. Furthermore, the hydraulic transmission response is sluggish, its dynamic adaptability is poor, it is difficult to cope with sudden load changes, it has high energy consumption during continuous operation, and it is greatly affected by environmental factors such as temperature. It is prone to jamming at low temperatures and oil deterioration at high temperatures. A single push rod failure may lead to overall failure. It also lacks a mechanical self-locking function, posing a safety hazard when power is interrupted. Utility Model Content

[0005] The purpose of this utility model is to provide a cable anchoring structure for cable-stayed bridges, which can solve the problems of hydraulic systems requiring multiple components such as oil pumps and oil pipes, complex structures prone to oil leakage and aging, high maintenance costs requiring regular inspection by professional personnel, sluggish hydraulic transmission response, poor dynamic adaptability, difficulty in coping with sudden load changes, high energy consumption during continuous operation, and great influence from environmental factors such as temperature, which can easily cause jamming at low temperatures and oil deterioration at high temperatures. The failure of a single push rod may lead to overall failure, and there is no mechanical self-locking function, which poses a safety hazard when power is interrupted.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a cable-stayed bridge anchorage structure, comprising a fixed base plate and steel strands, and further comprising:

[0007] A locking element is provided on one side of the fixed base plate for self-locking clamping of the steel strand;

[0008] The first gripper is located on the outside of the steel strand;

[0009] A clamping element is disposed on one side of the fixed base plate;

[0010] The second gripper is located on the outside of the steel strand.

[0011] In a preferred embodiment, the locking element includes:

[0012] A fixed frame is fixedly installed on one side of the fixed base plate;

[0013] A connecting plate is fixedly installed on the inner side of the end of the fixed frame;

[0014] A rotating connecting block is fixedly mounted on the outer side of the end of the connecting plate;

[0015] The first rotating arm is rotatably mounted on the inner side of the end of the rotating connecting block;

[0016] The second rotating arm is rotatably disposed on the inner side of one end of the first rotating arm, and the outer side of the end of the second rotating arm is connected to the inner side of one end of the first gripper;

[0017] The third rotating arm is rotatably disposed on the inner side of the other end of the first rotating arm;

[0018] A limiting ring is rotatably mounted on the outer side of one end of the third rotating arm.

[0019] In a preferred embodiment, a plurality of sliding rods are fixedly provided on the lower surface of the connecting plate, and the outer side of the sliding rods is connected to the inner side of the limiting ring.

[0020] In a preferred embodiment, a top cylinder is fixedly provided on the lower surface of the connecting plate. The top cylinder is a hollow cylindrical structure and is used to limit the positioning ring. The steel strand is disposed on the inner side of the top cylinder.

[0021] In a preferred embodiment, a first slide rail is fixedly provided on the upper surface of the connecting plate, and the first gripper is connected to the first slide rail through a slider structure.

[0022] In a preferred embodiment, a first limiting strip is fixedly provided on the inner side of the end of the first gripper, multiple sets of limiting grooves are opened on the outer side of the end of the steel strand, and a retaining ring is fixedly provided on the outer side of one end of the steel strand, the retaining ring being disposed on one side of the limiting ring.

[0023] In a preferred embodiment, the clamping member includes:

[0024] The second slide rail is fixedly installed on one side of the fixed base plate;

[0025] The clamping block is slidably disposed on the inner side of the end of the second slide rail;

[0026] A cross block is located on the inner side of the middle portion of the second slide rail, and the steel strand is located on the inner side of the middle portion of the cross block.

[0027] In a preferred embodiment, a retaining ring is fixedly provided on the outer side of one end of the steel strand, and the retaining ring is located on one side of the cross block.

[0028] In a preferred embodiment, a limiting groove is formed on the outer side of one end of the steel strand, and a second limiting strip is fixedly provided on the outer side of one end of the second gripper. The second limiting strip is used to limit the steel strand.

[0029] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0030] In use, the third rotating arm of this device is horizontally oriented inward with no force in other directions, forming a mechanical self-locking state. It can maintain fixation without additional external force, and utilizes the geometric characteristics of the structure itself to achieve stable self-locking. This prevents the steel strand from loosening or slipping due to factors such as vibration and load fluctuation, ensuring long-term reliable anchoring. The structure is compact and easy to operate, making it suitable for scenarios such as bridges that require high-stability anchoring. Pushing the cross block vertically upward moves the clamping block and the second clamping claw towards the center, so that the clamping force increases synchronously with the tension. It can adaptively match the actual load, resist fatigue load, and give the structure redundant safety performance. Even if some parts wear, the overall strength can be maintained. Attached Figure Description

[0031] Figure 1 A front view schematic diagram of a cable anchorage structure for a cable-stayed bridge provided by this utility model;

[0032] Figure 2 A schematic diagram of the connecting plate and rotating connecting block in a cable-stayed bridge anchorage structure provided by this utility model;

[0033] Figure 3 A schematic diagram of the first and third rotating arms in a cable-stayed bridge anchorage structure provided by this utility model;

[0034] Figure 4 This utility model provides a structural schematic diagram of the limiting groove and retaining ring in a cable-stayed bridge cable anchorage structure;

[0035] Figure 5A schematic diagram of the structure for fixing the base plate and steel strands in a cable-stayed bridge cable anchorage structure provided by this utility model;

[0036] Figure 6 An exploded view of a cable-stayed bridge anchorage structure provided by this utility model.

[0037] Legend:

[0038] 1. Fixed base plate; 2. Steel strand; 201. Limiting groove; 202. Snap ring; 3. First gripper; 301. Connecting plate; 302. Rotating connecting block; 303. First rotating arm; 304. Second rotating arm; 305. Third rotating arm; 306. Limiting ring; 307. Top cylinder; 308. Slide rod; 309. First slide rail; 310. Fixed frame; 311. First limiting strip; 4. Second gripper; 401. Second slide rail; 402. Clamping block; 403. Cross block; 404. Second limiting strip. Detailed Implementation

[0039] 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.

[0040] Example 1

[0041] In this embodiment, a cable anchoring structure for a cable-stayed bridge is provided, such as... Figures 1 to 4 As shown, it includes a fixed base plate 1, a steel strand 2, a first clamping claw 3, and a locking member. The steel strand 2 is disposed inside the arc-shaped structure at the end of the first clamping claw 3, and the locking member is used to self-lock and fix the steel strand 2.

[0042] The locking component includes: a fixing frame 310 fixedly connected to the outer side of the end of the fixing base plate 1, the fixing frame 310 being used to fix and support the connecting plate 301 on the inner side of its end, a plurality of rotating connecting blocks 302 being fixedly connected to the outer side of the end of the connecting plate 301, the rotating connecting blocks 302 having a U-shaped structure, a first rotating arm 303 being rotatably connected to the inner side of the end of the rotating connecting block 302, a second rotating arm 304 being rotatably connected to the inner side of the end of the first rotating arm 303, and the outer side of one end of the second rotating arm 304 being connected to the inner side of one end of the first gripper 3. The connecting plate 301 is rotatably connected to the upper surface of the connecting plate 301. A first slide rail 309 is mounted on the upper surface of the connecting plate 301. A first gripper 3 is rotatably connected to the first slide rail 309 via a slider. The first gripper 3 is used to connect the first gripper 3 to the connecting plate 301. A third rotating arm 305 is rotatably connected to the outer side of the bottom end of the first rotating arm 303. A limit ring 306 is rotatably connected to the outer side of the end of the third rotating arm 305. Multiple third rotating arms 305 are arranged on the outer side of the limit ring 306. At the same time, multiple sliding rods 308 are fixedly connected to the lower surface of the connecting plate 301 to limit the limit ring 306.

[0043] The lower surface of the connecting plate 301 is fixedly connected to a top cylinder 307, which is a cylindrical structure used to abut against one side of the limiting ring 306 to limit its movement. At the same time, multiple annular limiting grooves 201 are opened on the outer side of the steel strand 2. The limiting grooves 201 match the first limiting strip 311 on the outer side of one end of the first gripper 3 to limit the steel strand 2. The retaining ring 202 on the outer side of the end of the steel strand 2 abuts against one side of the limiting ring 306.

[0044] In the specific implementation process, when using the device, the user can pass the steel strand 2 through the inner side of the device. The connecting plate 301 has a through hole in the middle for the steel strand 2 to pass through its inner side. At this time, the end of the steel strand 2 is fixedly connected to the fixed base plate 1. When the steel strand 2 is stretched, the retaining ring 202 on the outer side of the end of the steel strand 2 abuts against one side of the limiting ring 306, thereby driving the limiting ring 306 to slide on the outside of the sliding rod 308, and at the same time driving the third rotating arm 305 to rotate until the limiting ring 306 is in a horizontal state. The rotation of the third rotating arm 305 will drive the first... A rotating arm 303 rotates, causing the other end of the first rotating arm 303 to move inward. At the same time, it causes the second rotating arm 304 at the end of the first rotating arm 303 to move towards the center. The second rotating arm 304 can then drive multiple first grippers 3 to clamp towards the center. By engaging the first limiting strip 311 at the end of the first gripper 3 into the inner side of the limiting groove 201, the steel strand 2 can be limited. Meanwhile, due to the horizontal state of the third rotating arm 305, multiple third rotating arms 305 are horizontally facing inward, with no force in other directions, thus realizing the self-locking function of the device.

[0045] Example 2

[0046] In this embodiment, a cable anchoring structure for a cable-stayed bridge is provided, such as... Figures 4 to 6 As shown, it includes a fixed base plate 1, steel strand 2, a second gripper 4, and a clamping component;

[0047] The clamping component includes: a second slide rail 401 fixedly connected to the upper surface of the fixed base plate 1; a plurality of clamping blocks 402 slidably connected to the inner side of the second slide rail 401; the upper surface of the clamping blocks 402 fixedly connected to the second gripper 4; a cross block 403 provided on the inner side of the second slide rail 401; the cross block 403 can move vertically to drive the plurality of clamping blocks 402 to move inward; a plurality of second limiting strips 404 fixedly connected to the outer side of the end of the second gripper 4; a limiting groove 201 opened on the outer side of the steel strand 2; and a retaining ring 202 fixedly provided on the outer side of the end of the steel strand 2.

[0048] The clamping block 402 has multiple rectangular protrusions on its bottom outer side, and the second slide rail 401 has a rectangular through groove on its inner side for limiting the clamping block 402. The cross block 403 has a trapezoidal protrusion on its end outer side, and the clamping block 402 has a trapezoidal through groove on its inner side for connecting the clamping block 402.

[0049] In the specific implementation process: When using the device, the user can fix the steel strand 2 to the fixed base plate 1. When the steel strand 2 is stretched, the retaining ring 202 on the outer side of the end of the steel strand 2 abuts against one side of the cross block 403, causing the cross block 403 to move vertically upward. At the same time as the cross block 403 moves vertically upward, multiple trapezoidal protrusions drive multiple clamping blocks 402 to move towards the center, thereby driving multiple second clamping claws 4 to clamp towards the center. The second limiting strip 404 matches the limiting groove 201 to limit the steel strand 2. At the same time, the greater the stretching force of the steel strand 2, the greater the tendency of the cross block 403 to move vertically upward, the greater the clamping force of the multiple second clamping claws 4 towards the center, and the more firmly the steel strand 2 is fixed.

[0050] Working principle:

[0051] Based on Example 1, when the steel strand 2 passes through the device and its end is fixed to the fixed base plate 1, when under tension, the retaining ring 202 on the outer side of the end of the steel strand 2 abuts against one side of the limiting ring 306, causing the limiting ring 306 to slide outside the slide bar 308 and causing the third rotating arm 305 to rotate to a horizontal state. At the same time, the first rotating arm 303 and the end second rotating arm 304 are driven to drive multiple first claws 3 to clamp towards the center, and the first limiting strip 311 at the end of the first claw 3 is inserted into the inner part of the limiting groove 201. At this time, the third rotating arm 305 is horizontally facing inward and has no force in other directions, forming a mechanical self-locking state. It can maintain fixation without additional external force. It uses the geometric characteristics of the structure itself to achieve stable self-locking, avoiding the loosening or slippage of the steel strand 2 due to vibration, load fluctuations and other factors, ensuring long-term reliable anchoring. The structure is compact and easy to operate, and it is suitable for scenarios such as bridges that require high-stability anchoring.

[0052] Based on Example 2, when the tension of the steel strand 2 changes due to environmental influences, the retaining ring 202 pushes the cross block 403 to move vertically upward, causing the clamping block 402 and the second clamping claw 4 to move towards the center, so that the clamping force increases synchronously with the tension. This not only adapts to the actual load and resists fatigue load, but also gives the structure redundant safety performance. Even if some parts wear, the overall strength can be maintained. At the same time, it does not require complex manual maintenance and monitoring, and can automatically adapt to load and environmental changes during the service life, effectively offsetting the loosening trend caused by material deformation or vibration, significantly improving anchoring stability and extending service life.

[0053] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A cable-stayed bridge cable anchoring structure comprising a fixed base plate (1) and a steel strand (2), characterized in that: Also includes: A locking element is provided on one side of the fixed base plate (1) for self-locking clamping of the steel strand (2); The first gripper (3) is located on the outside of the steel strand (2); A clamping element is disposed on one side of the fixed base plate (1); The second gripper (4) is located on the outside of the steel strand (2).

2. The cable anchorage structure of a cable-stayed bridge according to claim 1, characterized in that: The locking element includes: A fixed frame (310) is fixedly installed on one side of the fixed base plate (1); A connecting plate (301) is fixedly disposed on the inner side of the end of the fixing frame (310); A rotating connecting block (302) is fixedly disposed on the outer side of the end of the connecting plate (301); The first rotating arm (303) is rotatably disposed on the inner side of the end of the rotating connecting block (302); The second rotating arm (304) is rotatably disposed on the inner side of one end of the first rotating arm (303), and the outer side of the end of the second rotating arm (304) is connected to the inner side of one end of the first gripper (3). The third rotating arm (305) is rotatably disposed on the inner side of the other end of the first rotating arm (303); The limiting ring (306) is rotatably disposed on the outer side of one end of the third rotating arm (305).

3. The cable anchorage structure for a cable-stayed bridge according to claim 2, characterized in that: The lower surface of the connecting plate (301) is fixedly provided with a plurality of slide rods (308), and the outer side of the slide rods (308) is connected to the inner side of the limiting ring (306).

4. The cable anchorage structure for a cable-stayed bridge according to claim 3, characterized in that: A top cylinder (307) is fixedly provided on the lower surface of the connecting plate (301). The top cylinder (307) is a hollow cylindrical structure. The top cylinder (307) is used to limit the limiting ring (306). The steel strand (2) is provided on the inner side of the top cylinder (307).

5. The cable anchoring structure for a cable-stayed bridge according to claim 2, characterized in that: The upper surface of the connecting plate (301) is fixedly provided with a first slide rail (309), and the first gripper (3) is connected to the first slide rail (309) through a slider structure.

6. The cable anchoring structure for a cable-stayed bridge according to claim 2, characterized in that: The first clamp (3) has a first limiting strip (311) fixedly installed on the inner side of its end. The steel strand (2) has multiple sets of limiting grooves (201) opened on the outer side of its end. A retaining ring (202) is fixedly installed on the outer side of one end of the steel strand (2). The retaining ring (202) is located on one side of the limiting ring (306).

7. The cable anchorage structure for a cable-stayed bridge according to claim 1, characterized in that: The clamping element includes: The second slide rail (401) is fixedly installed on one side of the fixed base plate (1); The clamping block (402) is slidably disposed on the inner side of the end of the second slide rail (401); A cross block (403) is disposed on the inner side of the middle part of the second slide rail (401), and the steel strand (2) is disposed on the inner side of the middle part of the cross block (403).

8. The cable anchorage structure for a cable-stayed bridge according to claim 7, characterized in that: A retaining ring (202) is fixedly provided on the outer side of one end of the steel strand (2), and the retaining ring (202) is located on one side of the cross block (403).

9. A cable-stayed bridge anchorage structure according to claim 7, characterized in that: A limiting groove (201) is provided on the outer side of one end of the steel strand (2), and a second limiting strip (404) is fixedly provided on the outer side of one end of the second gripper (4). The second limiting strip (404) is used to limit the steel strand (2).

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