Wind-resistant cable structure convenient to install on pedestrian suspension bridge

Abstract

The utility model relates to a wind-resistant cable structure convenient to install on a pedestrian suspension bridge. The method is suitable for the field of pedestrian suspension bridge design and construction. According to the technical scheme, the wind-resistant cable structure convenient to install on the pedestrian suspension bridge is characterized in that the wind-resistant cable structure is provided with a main beam, the main beam is hung on a main cable through slings, wind-resistant main cables arranged in the length direction of the main beam are arranged on the two sides of the main beam, the two ends of each wind-resistant main cable are anchored to the ground through wind-resistant anchors, and the wind-resistant main cables are connected with the main beam through the wind-resistant anchors. First connecting pieces are sequentially arranged on the wind-resistant main cable in the length direction of the wind-resistant main cable, second connecting pieces are sequentially arranged on the main beam in the length direction of the main beam, at least one inhaul cable structure is arranged between the main beam and the wind-resistant main cable in the length direction of the main beam, and each inhaul cable structure is provided with an inhaul cable. The inhaul cable shuttles between the first connecting piece on the wind-resistant main cable and the second connecting piece on the main beam.

Description

Technical Field

[0001] The utility model relates to a wind-resistant cable structure which is convenient for installation on a pedestrian suspension bridge and is applicable to the design and construction field of pedestrian suspension bridges. Background Technique

[0002] Due to advantages such as large spanning capacity, beautiful linear shape, and strong environmental adaptability, pedestrian suspension bridges have become the main form of large-span bridges built in areas such as tourist scenic spots, mountain valleys, and landscape waters. Compared with other bridge types, pedestrian suspension bridges have the characteristics of light self-weight, small width-span ratio, small structural stiffness, and low natural vibration frequency. Under the action of wind load, the structure is prone to torsional or lateral instability.

[0003] To ensure that the pedestrian suspension bridge meets the requirements of normal use and wind resistance stability, setting up a wind-resistant cable system is a commonly used structural measure. Existing research shows that a spatial wind-resistant cable can be regarded as a spring support with stiffness acting on the basic structural system, and the support stiffness has a significant impact on the static and dynamic characteristics of the bridge structure. The tensioned spatial wind-resistant cable can significantly improve the overall stiffness of the structure, reduce the vertical and lateral deformations of the structure under load, and at the same time greatly increase the frequencies of each key vibration mode of the structure, enhancing the static wind stability and flutter stability of the overall structure, and meeting the wind resistance stability requirements under the condition of an extremely small width-span ratio.

[0004] The conventional wind-resistant cable system mainly consists of a main wind-resistant cable and stay cables, and the material is mostly steel wire rope. Existing research results show that the wind-resistant stay cables are often arranged in a parallel straight-pull type, which can maximize the overall wind resistance stability of the structure. However, to maintain the linear shape and tension, the current main wind-resistant cable and stay cables are generally connected through specially made fixed cable clamps. The installation positions of the fixed cable clamps on the main wind-resistant cable and the cutting lengths of each parallel straight-pull stay cable need to be accurately calculated, processed, and lofted. The installation process of the wind-resistant cable system has many procedures, difficult precision control, and large adjustment difficulty. During the installation stage, due to error factors such as the deck elevation, anchor point position, temperature measurement, calculation, or installation, the linear shape of the wind-resistant cable and the sectional tension of the stay cables deviate from the target values, and the cable has to be sent back to the factory for adjustment, affecting the construction period and cost. In addition, the steel wire rope has characteristics such as large elastic modulus error and easy relaxation, which further increases the difficulty of accurately controlling the linear shape and tension of the wind-resistant cable. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is: To solve the above technical problems, the utility model provides a wind-resistant cable structure which is convenient for installation on a pedestrian suspension bridge.

[0006] The technical solution adopted by the utility model is as follows: An anti-wind cable structure convenient for installation on a pedestrian suspension bridge, which is connected between the main beam and the main anti-wind cable. The main anti-wind cable is arranged on both sides of the main beam. It is characterized in that: along the length direction of the main anti-wind cable, first connectors are sequentially arranged on the main anti-wind cable; along the length direction of the main beam, second connectors are sequentially arranged on the main beam; at least one cable structure is installed between the main beam and the main anti-wind cable along the length direction of the main beam. A cable structure has a cable, and the cable shuttles between the first connector on the main anti-wind cable and the second connector on the main beam. The ends of the cables at both ends of the main beam are fixedly connected to the main anti-wind cable through fixed connectors. In this way, when arranging this pedestrian suspension bridge, after the main beam is installed, the two ends of the main anti-wind cable are anchored to the ground. After one end of the cable is fixedly connected to the fixed connector at one end of the main anti-wind cable, the cable is sequentially passed through the first connector and the second connector and then fixedly connected to the fixed connector at the other end of the main anti-wind cable. The cable structure arranged between the main beam and the main anti-wind cable is composed of the same cable, avoiding the problem that when multiple parallel cables are arranged between the main beam and the main anti-wind cable, each cable needs to be separately connected between the main beam and the main anti-wind cable. This greatly reduces the cutting accuracy and installation difficulty of the cable and significantly saves the construction period. The cables at both ends of the main beam are fixedly connected to the main anti-wind cable through fixed connectors, which can effectively prevent personnel on the main beam from making misoperations during daily use. At the same time, the cables between the main beam and the main anti-wind cable form an outward-expanded structure at both ends, effectively improving the static and dynamic characteristics of the bridge structure.

[0007] The first connector has a suspension ring, the suspension ring is installed on the main anti-wind cable through a cable clamp, and a first pulley is installed on the suspension ring. The cable is installed on the first pulley, and the cable and the first pulley can slide relative to each other. In this way, when installing the cable between the main beam and the main anti-wind cable, by installing the cable on the first pulley, the wear between the cable and the first connector is greatly reduced.

[0008] Limit rope clamps are installed on the cables on both sides of the first pulley. In this way, after the cable is tensioned and installed between the main beam and the main anti-wind cable, the cable can be fixed to the first connector through the limit rope clamps, avoiding the relative sliding between the cable and the first pulley during stress and causing internal force and linear change after the cable is installed between the main beam and the main anti-wind cable.

[0009] The second connector has a shackle installed on the main beam lug, and a second pulley is installed on the shackle. The cable is installed on the second pulley, and the cable and the second pulley can slide relative to each other. In this way, when installing the cable between the main beam and the main anti-wind cable, by installing the cable on the second pulley, the wear between the cable and the second connector is greatly reduced.

[0010] Limit rope clips are installed on the cable stays on both sides of the second pulley. In this way, after the cable stays are tensioned and installed between the main beam and the wind-resistant main cable, the cable stays can be fixed to the second connecting piece through the limit rope clips, avoiding relative sliding between the cable stays and the second pulley when stressed after the cable stays are installed between the main beam and the wind-resistant main cable, which may cause internal force and linear change.

[0011] The fixed connecting piece has a sling ring, the sling ring is installed on the wind-resistant main cable through a cable clip, a turnbuckle is installed on the sling ring, and the end of the cable stay is connected to the turnbuckle. In this way, it is convenient to connect both ends of the cable stay to the wind-resistant main cable and convenient to adjust the tension of the cable stay by adjusting the turnbuckle.

[0012] A fixed rope clip is installed on the end of the cable stay installed on the turnbuckle. In this way, after the end of the cable stay is connected to the turnbuckle, the cable stay is connected to the turnbuckle through the fixed rope clip at the end of the cable stay, avoiding the cable stay falling off the turnbuckle.

[0013] The second connecting piece on the main beam is arranged at the corresponding position between two first connecting pieces on the wind-resistant main cable, and the cable stays arranged between the main beam and the wind-resistant main cable form a triangular structure. In this way, a relatively high structural stability is achieved among the main beam, the cable stays and the wind-resistant main cable.

[0014] A construction method for a wind-resistant cable structure that is easy to install on a pedestrian suspension bridge is applied to the wind-resistant cable structure that is easy to install on the above-mentioned pedestrian suspension bridge, and is characterized in that:

[0015] Suspend the main beam on the main cable through suspension cables;

[0016] Anchoring wind-resistant anchor blocks on the ground on both sides of the end of the main beam;

[0017] Install the assembled sling ring and the first pulley on the corresponding position of the wind-resistant main cable through a cable clip (determined in advance by calculation);

[0018] Connect both ends of the two wind-resistant main cables to the wind-resistant anchor blocks on both sides of the main beam respectively;

[0019] Install the assembled shackle and the second pulley on the ear on the main beam;

[0020] After passing the cable stay between the main beam and the wind-resistant main cable, fix and connect the ends of the cable stay at both ends on the main beam to the wind-resistant main cable through the assembled turnbuckle and sling ring;

[0021] Install fixed rope clips at the positions of the ends of the cable stays at both ends on the main beam, and install limit rope clips at the positions on both sides of the first pulley and the second pulley on the cable stay.

[0022] The beneficial effects of the present utility model are as follows: By arranging only one cable between the main beam and the wind-resistant main cable, the cable shuttles back and forth between the main beam and the wind-resistant main cable, and both ends of the cable are fixedly connected to the wind-resistant main cable. In this way, only the two ends of one cable need to be fixedly connected to the wind-resistant main cable, avoiding the need to connect each cable to both the main beam and the wind-resistant main cable when multiple cables are arranged between the main beam and the wind-resistant main cable, greatly reducing the structural calculation accuracy, sectional processing accuracy and construction difficulty; By shuttling the cable back and forth between the main beam and the wind-resistant main cable, the cable between the main beam and the wind-resistant main cable forms a triangular structure, having relatively high structural strength; By installing a second pulley on the main beam through a shackle, the cable can cooperate with the second pulley when passing through the main beam, avoiding the wear of the cable during the installation process; By installing a first pulley on the wind-resistant main cable through a cable clip, the cable can cooperate with the first pulley when passing through the wind-resistant main cable, avoiding the wear of the cable during the installation process; By installing the end of the cable on the wind-resistant main cable through a turnbuckle, it is convenient to adjust the tension of the cable by adjusting the turnbuckle after installing the cable between the main beam and the wind-resistant main cable; By installing fixed rope clips at the end positions of the cable at both ends of the main beam, and installing limit rope clips at the positions on both sides of the first pulley and the second pulley on the cable, it is convenient to fix the cable alignment and internal force through the limit rope clips and fixed rope clips after installing the cable between the main beam and the main cable; Through the reasonable combination of each finished product procurement component, the special connection device required for the installation of the traditional parallel straight cable is avoided, effectively reducing the cost. Brief Description of the Drawings

[0023] Figure 1 is the overall plan view of the present utility model.

[0024] Figure 2 is Figure 1 the structural schematic diagram at position A in

[0025] Figure 3 is the side view of the structure where the cable in the present utility model is connected between the main beam and the wind-resistant main cable.

[0026] Figure 4 is Figure 1 the structural schematic diagram at position B in

[0027] Figure 5 is Figure 1 the structural schematic diagram at position C in

[0028] Figure 6 is Figure 1 the structural schematic diagram at position D in

[0029] Figure 7 is Figure 1 the structural schematic diagram at position E in

[0030] Figure 8 It is a schematic structural diagram of the installation of the second connecting piece on the main beam in the present utility model.

[0031] Figure 9 It is a schematic structural diagram of the installation of the first connecting piece on the main anti-wind cable in the present utility model.

[0032] Figure 10 It is a schematic installation diagram of the present utility model.

[0033] In the figure: 1. Anti-wind anchor; 2. Shackle; 3. Main anti-wind cable; 4. Stay cable; 5. Shackle; 6. Second pulley; 7. First pulley; 8. Eye ring; 9. Cable clamp; 10. Limit wire clamp; 11. Main beam; 12. Turnbuckle; 13. Fixed wire clamp. Specific embodiments

[0034] The present utility model will be further described in detail below in conjunction with the accompanying drawings and through embodiments. The following embodiments are explanations of the present utility model, and the present utility model is not limited to the following embodiments.

[0035] Embodiment 1 is an anti-wind cable structure that is convenient for installation on a pedestrian suspension bridge, which is connected between the main beam 11 and the main anti-wind cable 3. The main beam 11 is suspended on the main cable by suspension cables. Anti-wind anchors 1 are anchored on the ground on both sides of the main beam 11. Main anti-wind cables 3 are arranged on both sides of the main beam 11 along the length direction of the main beam 11. Both ends of the main anti-wind cable 3 are connected to the anchor 1. A stay cable structure is provided between the main beam 11 and the main anti-wind cable 3.

[0036] In this embodiment, the stay cable 4 structure has a stay cable 4. Both ends of the stay cable 4 are connected to the main anti-wind cable 3. The stay cable 4 shuttles between the main beam 11 and the main anti-wind cable 3, thereby connecting the main beam 11 and the main anti-wind cable 3 together.

[0037] In this embodiment, a number of shackles 2 are arranged on the main beam 11 along the length direction of the main beam 11. A second connecting piece is installed on the shackle 2. Specifically, a shackle 5 is installed on the shackle 2, and a second pulley 6 is installed on the shackle 5. In this way, when the stay cable 4 passes through the main beam 11, the stay cable 4 is installed on the second pulley 6. Under the action of the second pulley 6, the wear of the stay cable 4 can be reduced when the stay cable 4 is installed between the main beam 11 and the main anti-wind cable 3. By removing the shackle 5, it is convenient to remove and replace the second pulley 6 from the main beam 11.

[0038] In this embodiment, a plurality of first connecting members are arranged on the wind-resistant main cable 3 along the length direction of the wind-resistant main cable 3. The first connecting member has a sling 8, and the sling 8 is installed on the wind-resistant main cable 3 through a cable clip 9, and a first pulley 7 is installed on the sling 8. Thus, when the stay cable 4 passes through the wind-resistant main cable 3, the stay cable 4 is installed on the first pulley 7. Under the action of the first pulley 7, the wear of the stay cable 4 can be reduced when the stay cable 4 is installed between the main girder 11 and the wind-resistant main cable 3. By removing the cable clip 9, it is convenient to remove and replace the second pulley 6 from the main girder 11.

[0039] In this embodiment, both ends of the stay cable 4 are fixedly connected to the wind-resistant main cable 3 through fixed connecting members. The fixed connecting member has a sling 8 installed on the wind-resistant main cable 3, and a turnbuckle is installed on the sling 8, and the end of the stay cable 4 is connected to the turnbuckle. Thus, after the stay cable 4 is connected between the main girder 11 and the wind-resistant main cable 3, the stay cable 4 can be tensioned by adjusting the turnbuckle, and the tension of the stay cable 4 can be adjusted by adjusting the turnbuckle subsequently.

[0040] In this embodiment, fixed cable clips 13 are installed at the end positions of the stay cables 4 at both end positions on the main girder 11, and limit cable clips 10 are installed at the positions on both sides of the first pulley 6 and the second pulley 7 on the stay cable 3. Thus, after the stay cable 4 is installed between the main girder 11 and the wind-resistant main cable 3, by installing the limit cable clips 10 and the fixed cable clips 13 on the stay cable 4, the stay cable 4 is prevented from slipping, resulting in internal force and linear change, which affects the wind resistance stability of the pedestrian suspension bridge.

[0041] In this embodiment, the second connecting member on the main girder 11 is arranged at the corresponding position between two first connecting members on the wind-resistant main cable 3, and the stay cable 4 arranged between the main girder 11 and the wind-resistant main cable 3 forms a triangular structure; both ends of the stay cable 4 are installed on the wind-resistant main cable 3, so that the stay cable 4 between the main girder 11 and the wind-resistant main cable 3 forms a structure that expands outward at both end positions. Thus, the pedestrian suspension bridge has higher static and dynamic characteristics.

[0042] The operation method of this embodiment is as follows:

[0043] Suspend the main girder 11 on the main cable through the suspension cable;

[0044] Wind-resistant anchor blocks 1 are anchored on the ground on both sides of the end of the main girder 11;

[0045] Install the assembled sling 8 and the first pulley 7 on the corresponding position of the wind-resistant main cable 3 through the cable clip 9;

[0046] Connect both ends of the two wind-resistant main cables 3 to the wind-resistant anchor blocks 1 at both ends of the main girder 11 respectively;

[0047] Install the assembled shackle 5 and the second pulley 6 on the lifting lug 2 on the main girder 11;

[0048] After passing the stay cable 4 between the main beam 11 and the wind-resistant main cable 3, the ends of the stay cable 4 at both ends of the main beam 11 are fixedly connected to the wind-resistant main cable 3 through a assembled turnbuckle and a sling 8.

[0049] Fixing cable clamps 13 are installed at the end positions of the stay cable 4 at both ends of the main beam 11, and limiting cable clamps 10 are installed at the positions on both sides of the first pulley 6 and the second pulley 7 on the stay cable 3.

[0050] Embodiment 2 is a wind-resistant cable structure for a pedestrian suspension bridge that is easy to install. It is substantially the same as Embodiment 1, except that in this embodiment, a plurality of stay cable 4 structures need to be provided between the main beam 11 and the wind-resistant main cable 3. Between two adjacent stay cable structures, the ends of the stay cables 4 of the two stay cable structures are both connected to the same shackle 5, and the shackle 5 is installed on the lifting lug 2 of the main beam 11. Limiting cable clamps 10 are installed at the ends of the stay cables 4 installed on the same shackle 5.

[0051] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A wind-resistant cable structure that is easy to install on a pedestrian suspension bridge, connected between a main beam (11) and a wind-resistant main cable (3), wherein the wind-resistant main cable (3) is arranged at positions on both sides of the main beam (11), characterized in that: A first connecting piece is sequentially arranged on the wind-resistant main cable (3) along the length direction of the wind-resistant main cable (3), a second connecting piece is sequentially arranged on the main beam (11) along the length direction of the main beam (11), at least one cable structure is installed between the main beam (11) and the wind-resistant main cable (3) along the length direction of the main beam (11), a cable structure has a cable (4), the cable (4) shuttles between the first connecting piece on the wind-resistant main cable (3) and the second connecting piece on the main beam (11), and the ends of the cable (4) at both end positions on the main beam are fixedly connected to the wind-resistant main cable (3) through fixed connecting pieces.

2. The wind-resistant cable structure that is easy to install on a pedestrian suspension bridge according to claim 1, characterized in that: The first connecting member has a lifting ring (8), the lifting ring (8) is installed on the wind-resistant main cable (3) through a cable clamp (9), a first pulley (7) is installed on the lifting ring (8), and the cable (4) is installed on the first pulley (7).

3. The wind-resistant cable structure that is easy to install on a pedestrian suspension bridge according to claim 2, characterized in that: Limiting rope clamps (10) are installed on the cables (4) on both sides of the first pulley (7).

4. The wind-resistant cable structure that is easy to install on a pedestrian suspension bridge according to claim 1, characterized in that: The second connecting member comprises a shackle (5) mounted on the lifting lug (2) of the main beam (11), a second pulley (6) is mounted on the shackle (5), and the cable (4) is mounted on the second pulley (6).

5. The wind-resistant cable structure that is easy to install on a pedestrian suspension bridge according to claim 4, characterized in that: Limiting rope clamps (10) are installed on the cables (4) on both sides of the second pulley (6).

6. The wind-resistant cable structure that is easy to install on a pedestrian suspension bridge according to claim 1, characterized in that: The fixed connection part has a lifting ring (8), which is installed on the wind-resistant main cable (3) through a cable clamp (9), and a turnbuckle (12) is installed on the lifting ring (8), and the end of the cable (4) is connected to the turnbuckle.

7. The wind-resistant cable structure that is easy to install on a pedestrian suspension bridge according to claim 6, characterized in that: A fixed rope clamp (13) is installed on the end of the pull rope (4) installed on the turnbuckle.

8. The wind-resistant cable structure that is easy to install on a pedestrian suspension bridge according to claim 1, characterized in that: The second connecting member on the main beam (11) is arranged at a position corresponding to the position between the two first connecting members on the wind-resistant main cable (3), and the cable (4) arranged between the main beam (11) and the wind-resistant main cable (3) forms a triangular structure.

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