Length-adjustable temporary suspender of suspension bridge

Abstract

The invention relates to a length-adjustable temporary suspender of a suspension bridge, and belongs to the technical field of bridge construction. Comprising a steel wire rope connected with a main cable, and the lower end of the steel wire rope is fixed to a distribution beam; the upper end of the tension rod penetrates through the distribution beam, and a steel anchor box is fixed at the lower end of the tension rod; the supporting legs are mounted on the distribution beams; the center hole jack is arranged on the supporting leg and is connected with the tension rod; the limiting assembly is connected to the tensioning rod and used for limiting the moving position of the tensioning rod. After the steel wire rope, the tensioning rod, the distribution beam and the anchoring box are installed, the supporting feet are installed above the distribution beam, the center hole jack is installed above the supporting feet, the supporting feet support the center hole jack, and the distance between the distribution beam and the steel anchoring box is adjusted through tensioning of the center hole jack, so that the length of the suspender is adjusted, and the use requirement is met.

Description

Technical Field

[0001] The present application relates to the technical field of bridge construction, and in particular to a temporary hanger with adjustable length for a suspension bridge. Background Art

[0002] With the rapid development of bridge construction, there are more and more large-span bridge designs, especially suspension bridges and cable-stayed bridges. Among them, cable-stayed suspension bridges have the advantages of high rigidity of cable-stayed bridges and strong spanning capacity of suspension bridges, and are the preferred solution for super-large span bridges.

[0003] Suspension bridges and cable-stayed cooperative system bridges have the same suspension area. Their anchorage is through cables suspended from towers and anchored on both sides (or both ends of the bridge) as the main load-bearing components of the upper structure. Multiple hangers are hung from the cables to hang the main beam and form a combined system with the cables. Conventional suspension bridge hangers include straddle type and pin-connected type. The upper end of the straddle hanger bypasses the cable clamp on the main cable, and the lower end is connected to the ear plate extending from the bridge deck through a pin shaft; the upper end of the pin-connected hanger is connected to the ear plate on the cable clamp through a pin shaft, and the lower end is connected to the ear plate extending from the bridge deck through a pin shaft; and during the construction of the cable-stayed suspension cooperative system bridge, temporary hangers need to be set up during the installation of the main beam to ensure that the steel beam segment can be connected to the main cable as a whole during installation. Therefore, the temporary hanger needs to have the function of adjusting the installation length of the steel anchor box and the distribution beam. Since the commonly used straddle type and pin-connected hanger structures do not have the function of adjusting the installation distance of the steel anchor box and the distribution beam, they cannot meet the use requirements. Summary of the invention

[0004] The embodiment of the present application provides a temporary hanger with adjustable length for a suspension bridge to solve the defect in the related technology that the structural forms of the straddle type and pin-connected hangers do not have the adjustment function for adjusting the installation distance of the steel anchor box and the distribution beam, and cannot meet the construction and use requirements of the cable-stayed suspension cooperative system bridge.

[0005] An embodiment of the present application provides a temporary hanger with adjustable length for a suspension bridge, comprising: a steel wire rope, which is used to be connected to a main cable, and the lower end of the steel wire rope is fixed to a distribution beam; a tension rod, the upper end of which passes through the distribution beam, and the lower end of which is fixed with a steel anchor box; a support leg, which is installed on the distribution beam; a through-hole jack, which is installed on the support leg and connected to the tension rod; a limit assembly, which is connected to the tension rod and is used to limit the moving position of the tension rod.

[0006] By adopting the above technical solution: through the precise coordination of components such as wire ropes, tension rods, struts, through-hole jacks and limit assemblies, flexible adjustment of the hanger length and precise control of the height are achieved. This design not only improves construction efficiency and accuracy, but also ensures stability and safety during the construction of the suspension bridge.

[0007] In some embodiments, the limiting assembly includes: an upper nut, which is connected to the tension rod and located at the top of the through-hole jack; a lower nut, a groove is provided at the bottom of the support foot, the notch of the groove faces the distribution beam, and the lower nut is connected to the tension rod and located in the groove.

[0008] By adopting the above technical solution: the upper nut effectively limits the upward movement range of the tension rod to prevent excessive lifting of the jack and cause structural damage; the lower nut is connected to the tension rod and is located in the groove. The lower nut limits the downward movement range of the tension rod to ensure that the hanger system will not fall off or get out of control during the adjustment process. Through the cooperation of the upper nut and the lower nut, precise control of the movement position of the tension rod is achieved, ensuring the safety and stability of the hanger system.

[0009] In some embodiments, an anchor head is provided at the bottom of the steel wire rope, and the anchor head abuts against the bottom of the distribution beam.

[0010] By adopting the above technical solution: the anchor head is abutted and fixed on the bottom of the distribution beam, and the anchor head provides strong connection force and stability to prevent the wire rope from falling off or sliding from the distribution beam when subjected to stress.

[0011] In some embodiments, a connecting groove is provided on the lower flange at the bottom of the distribution beam, the notch of the connecting groove faces the outside of the distribution beam, the maximum width of the connecting groove is smaller than the diameter of the anchor head, and the anchor head is clamped in the connecting groove.

[0012] By adopting the above technical solution: the anchor head is clamped into the connection groove from the side of the distribution beam, the installation of the wire rope is effectively realized, and under the action of the anchor head, the wire rope connection is ensured to be stable and the installation is convenient.

[0013] In some embodiments, a limiting angle steel is provided at a notch of the distribution beam located at the connecting groove.

[0014] By adopting the above technical solution:

[0015] In some embodiments, the lower end of the tension rod is connected to an anchor nut, and the anchor nut abuts against the steel anchor box.

[0016] By adopting the above technical solution: after the anchor head is connected, the limiting angle steel limits the notch of the connecting groove, thereby preventing the anchor head from falling off from the connecting groove.

[0017] In some embodiments, a washer is provided on the tension rod between the anchor nut and the steel anchor box.

[0018] By adopting the above technical solution: the design of the washer and the anchor nut makes the installation process of the tension rod more convenient, and the addition of the washer can ensure that the anchor nut will not directly damage the connecting surface of the steel anchor box during the tightening process, thereby simplifying the installation steps.

[0019] In some embodiments, the anchor nut is configured as a spherical nut, and the spherical nut is rotatably connected to the tension rod.

[0020] By adopting the above technical solution: when the tension rod and the spherical nut are rotationally connected, flexible adjustment between the connecting parts can be more easily achieved, and the spherical nut can well adapt to slight deviations or misalignments between the connecting parts, thereby ensuring the stability of the connection.

[0021] In some embodiments, a cable clamp is provided on the main cable, and the steel wire rope is connected to the cable clamp.

[0022] By adopting the above technical solution: the pre-designed connection part of the wire rope is wrapped around the cable clamp, and then the wire rope is tightened and fixed by the tightening action of the cable clamp. This connection method has the characteristics of simple structure, convenient operation, economy and practicality.

[0023] In some embodiments, a sling clamp is provided on the steel wire rope.

[0024] By adopting the above technical solution: the sling clamp makes the connection and disassembly of the wire rope more convenient and quick, thereby improving the work efficiency of the lifting operation.

[0025] The beneficial effects of the technical solution provided by this application include:

[0026] The embodiment of the present application provides a temporary suspender with adjustable length for a suspension bridge. During the construction of a cable-stayed suspension bridge, a temporary suspender needs to be set up during the installation of the main beam to ensure that the steel beam segment can be connected to the main cable as a whole during installation. The suspender needs to have the function of adjusting the installation length of the steel anchor box and the distribution beam. Therefore, after the installation of the steel wire rope, tension rod, distribution beam and anchor box, the present application installs a support foot above the distribution beam, and a through-hole jack is installed above the support foot. The support foot provides support for the through-hole jack, and the distance between the distribution beam and the steel anchor box is adjusted by tensioning the through-hole jack to meet the construction requirements. The structure is simple and easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A schematic front view of the overall structure provided in the embodiment of the present application;

[0029] Figure 2 A schematic side view of the overall structure provided in an embodiment of the present application;

[0030] Figure 3 A front view schematic diagram showing the suspension rod in an adjusted state provided in an embodiment of the present application;

[0031] Figure 4 A side view schematic diagram showing the suspension rod in an adjustment state provided in an embodiment of the present application;

[0032] Figure 5 A schematic plan view showing the connection state between the steel wire rope and the distribution beam provided in an embodiment of the present application;

[0033] Figure 6 A schematic elevation diagram showing the connection state of the steel wire rope and the distribution beam provided in an embodiment of the present application;

[0034] Figure 7 A schematic diagram showing the relative relationship between the anchor head and the distribution beam provided in an embodiment of the present application;

[0035] Figure 8 A schematic diagram showing the structure of the anchor nut provided in the embodiment of the present application;

[0036] Reference numerals:

[0037] 1. Steel wire rope; 20. Main cable; 21. Distribution beam; 210. Connection groove; 211. Limit angle steel; 3. Tension rod; 30. Anchor nut; 31. Washer; 4. Steel anchor box; 5. Support foot; 6. Groove; 7. Through-hole jack; 70. Upper nut; 71. Lower nut; 8. Anchor head; 90. Cable clamp; 91. Sling clamp. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0039] The embodiment of the present application provides a temporary hanger with adjustable length for a suspension bridge, which can solve the defect that the structural forms of straddle-type and pin-connected hangers do not have the adjustment function for adjusting the installation distance of the steel anchor box and the distribution beam, and cannot meet the construction and use requirements of the cable-stayed suspension cooperative system bridge.

[0040] See also Figures 1 to 8 As shown, an embodiment of the present application provides a temporary suspender with adjustable length for a suspension bridge, comprising: a steel wire rope 1, a tension rod 3, a support leg 5, a through-hole jack 7 and a limit assembly. The steel wire rope 1 is used to connect with the main cable 20, and the connection method includes but is not limited to providing a cable clamp 90 on the main cable 20, and the steel wire rope 1 is connected to the cable clamp 90. Among them, the main cable 20 is the main load-bearing component of the suspension bridge, and is usually composed of high-strength, corrosion-resistant steel wires, which are carefully woven or arranged in parallel to form a strong tension-bearing structure. The cable clamp 90 is a key component connecting the steel wire rope 1 and the main cable 20, and it is usually fastened to the main cable 20 in the form of a hoop. The design of the cable clamp 90 enables the steel wire rope 1 to generate a certain frictional resistance after being tightened on the main cable 20, thereby resisting slippage and ensuring that the node position between the sling and the main cable 20 is fixed; specifically, the pre-designed connection part of the steel wire rope 1 is wrapped around the cable clamp 90, and then the steel wire rope 1 is tightened and fixed by the tightening effect of the cable clamp 90. This connection method has the characteristics of simple structure, convenient operation, and economical and practical. In addition, a sling clamp 91 is provided on the steel wire rope 1. The design of the sling clamp 91 makes the connection and removal of the steel wire rope 1 more convenient and quick, thereby improving the work efficiency of the hoisting operation.

[0041] Then the lower end of the steel wire rope 1 is fixed to the distribution beam 21. The fixing method of the steel wire rope 1 and the distribution beam 21 includes, but is not limited to, an anchor head 8 is provided at the bottom of the steel wire rope 1, and the anchor head 8 is in contact with the bottom of the distribution beam 21. The steel wire rope 1 is responsible for transferring the tension generated by live load, dead load, etc. from the distribution beam 21 or other components to the main cable 20. Here, the load of the distribution beam 21 can be transferred to the main cable 20 through the steel wire rope 1. The distribution beam 21, also called a crossbeam or a distribution component, is an important component of the bridge structure or hoisting equipment. Its main function is to distribute the load from the upper structure and transfer it to the supporting structure below, such as the main cable 20, columns, etc. Through the distribution beam 21, the load can be more evenly distributed throughout the structure, thereby improving the stability and bearing capacity of the structure. After the steel wire rope 1 passes through the distribution beam 21, an anchor head 8 is connected to the steel wire rope 1, and the anchor head 8 is abutted and fixed at the bottom of the distribution beam 21. The anchor head 8 provides a strong connection force and stability to prevent the steel wire rope 1 from falling off or sliding from the distribution beam 21 when subjected to stress.

[0042] The upper end of the tension rod 3 passes through the distribution beam 21, and a steel anchor box 4 is fixed at the lower end. There are at least two tension rods 3, and the distribution beam 21 is provided with a through hole for the tension rod 3 to pass through. The distribution beam 21 can ensure that the force transmitted by the tension rod 3 is evenly distributed to each part, thereby avoiding excessive local force and causing structural damage. This uniform distribution of force is crucial to ensuring the stability and safety of the entire structure. The steel anchor box 4 serves as a fixing device at the lower end of the tension rod 3 and plays an anchoring role. It can effectively transfer the force transmitted by the tension rod 3 to the main beam or tower column of the bridge or other structure. The steel anchor box 4 can be prefabricated as a whole in the factory, with fast production speed and high precision. After being transported to the construction site, it can be hoisted as a whole, which greatly simplifies the construction process and improves construction efficiency.

[0043] In the present application, in order to make the tension rod 3 firmly connected with the steel anchor box 4, an anchor nut 30 is connected to the lower end of the tension rod 3, and the anchor nut 30 abuts against the steel anchor box 4. The abutment of the anchor nut 30 with the steel anchor box 4 provides a stable and reliable connection point for the tension rod 3. This connection method can effectively prevent the tension rod 3 from slipping or breaking during the force-bearing process, thereby ensuring the stability and safety of the entire structure. Moreover, the abutment of the anchor nut 30 with the steel anchor box 4 actually forms an integral structure between the tension rod 3 and the steel anchor box 4, which can significantly improve the overall rigidity of the structure, so that it can better resist the effect of external loads. Finally, the anchor nut 30 not only plays a connecting role, but also can adjust the tension of the tension rod 3 by adjusting its tightening degree. By accurately adjusting the tightening degree of the anchor nut 30, it can be ensured that the tension rod 3 maintains appropriate tension during the force-bearing process, thereby improving the stability and safety of the structure.

[0044] In the present application, a washer 31 is also provided on the tension rod 3 between the anchor nut 30 and the steel anchor box 4. The washer 31 has a certain elasticity and can absorb and slow down vibration to a certain extent. This helps to reduce the vibration and noise of the structure during the force-bearing process and improve the comfort and reliability of the structure. In addition, under the action of the washer 31, friction and wear are reduced, and stress is dispersed, which can significantly improve the durability of the connector. This helps to extend the service life of the structure and reduce maintenance costs.

[0045] In the present application, the anchor nut 30 is also configured as a spherical nut, which is rotatably connected to the tension rod 3. The spherical nut has a spherical or hemispherical shape, has a large rotation angle, and can rotate within a certain range. This feature enables the spherical nut to adapt well to slight deviations or misalignments between the connecting parts, thereby ensuring the stability of the connection. When the tension rod 3 is rotatably connected to the spherical nut, the flexible adjustment of the tension rod 3 can be more easily achieved.

[0046] The support legs 5 are installed on the distribution beam 21; the through-hole jacks 7 are installed on the support legs 5 and connected to the tension rods 3. The support legs 5 are installed above the distribution beam 21, and they mainly play a supporting and stabilizing role. They can withstand the lifting force from the through-hole jacks, and evenly transfer these forces to the distribution beam 21 to prevent structural damage caused by uneven force. The through-hole jack is a double-acting jack that uses double hydraulic cylinders to tension prestressed tendons and jacking anchors. It is installed above the support legs 5 and generates a lifting force through hydraulic transmission, thereby adjusting the distance between the distribution beam 21 and the steel anchor box 4. When effectively meeting the construction of the cable-stayed suspension cooperative system bridge, during the installation of the main beam, a hanger structure composed of a steel wire rope 1 and a tension rod 3 is set, which has the function of adjusting the installation length distance of the steel anchor box 4 and the distribution beam 21.

[0047] In the present application, the last limit assembly is connected to the tension rod 3 and is used to limit the moving position of the tension rod 3. The limit assembly includes: an upper nut 70 and a lower nut 71. Among them, the upper nut 70 is connected to the tension rod 3 and is located on the top of the through-hole jack 7. The upper nut 70 effectively limits the upward movement range of the tension rod 3 to prevent the through-hole jack 7 from over-lifting and causing structural damage. The bottom of the support leg 5 is provided with a groove 6, the notch of the groove 6 faces the distribution beam 21, and the lower nut 71 is connected to the tension rod 3 and is located in the groove 6. The lower nut 71 limits the downward movement range of the tension rod 3 to ensure that the suspension rod system will not fall off or lose control during the adjustment process. Through the cooperation of the upper nut 70 and the lower nut 71, the precise control of the moving position of the tension rod 3 is achieved, ensuring the safety and stability of the suspension rod system. The bottom setting of the support leg 5 not only provides an installation position for the lower nut 71, but also enhances the connection stability between the support leg 5 and the tension rod 3.

[0048] In the present application, in order to improve the convenience of installing the steel wire rope 1, a connecting groove 210 is also provided on the lower flange at the bottom of the distribution beam 21, the notch of the connecting groove 210 faces the outside of the distribution beam 21, the maximum width of the connecting groove 210 is smaller than the diameter of the anchor head 8, and the anchor head 8 is clamped in the connecting groove 210. Since the steel wire rope 1 is directly connected and fixed to the anchor head 8, when the anchor head 8 is clamped into the connecting groove 210 from the side of the distribution beam 21, the installation of the steel wire rope 1 is effectively realized, and under the action of the anchor head 8, the connection of the steel wire rope 1 is ensured to be stable.

[0049] In the present application, in order to prevent the anchor head 8 from slipping off the notch of the connecting groove 210, a limiting angle steel 211 is provided on the distribution beam 21 at the notch of the connecting groove 210. After the anchor head 8 is connected, the limiting angle steel 211 limits the notch of the connecting groove 210, thereby preventing the anchor head 8 from falling off from the connecting groove 210.

[0050] The implementation principle of the embodiment of the present application is: during the construction of the cable-stayed suspension system bridge, during the installation of the main beam, a temporary hanger needs to be set up to ensure that the steel beam segment can be connected to the main cable 20 as a whole during installation. The hanger needs to have the function of adjusting the installation length of the steel anchor box 4 and the distribution beam 21. After the installation of the steel wire rope 1, the tension rod 3, the distribution beam 21 and the anchor box is completed, the support foot 5 is installed above the distribution beam 21, and the through-hole jack 7 is installed above the support foot 5. The support foot 5 provides support for the through-hole jack 7. By coordinating and cooperating with these components to adjust the distance between the distribution beam 21 and the steel anchor box 4, the length of the hanger can be accurately adjusted. This design not only improves the construction efficiency and quality, but also enhances the stability of the structure, and provides strong technical support for the fields of bridge construction and equipment installation.

[0051] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. 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 it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0052] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0053] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A temporary suspender with adjustable length for a suspension bridge, characterized in that: include: A steel wire rope (1) used for connecting to the main cable (20), wherein the lower end of the steel wire rope (1) is fixed to the distribution beam (21); A tension rod (3), the upper end of which passes through the distribution beam (21) and the lower end of which is fixed with a steel anchor box (4); A support leg (5) mounted on the distribution beam (21); A through-hole jack (7), which is mounted on the support leg (5) and connected to the tension rod (3); A limiting assembly is connected to the tension rod (3) and is used to limit the moving position of the tension rod (3).

2. The temporary suspender with adjustable length for a suspension bridge as claimed in claim 1, characterized in that: The limiting component comprises: An upper nut (70) connected to the tension rod (3) and located on the top of the through-hole jack (7); A lower nut (71), a groove (6) is provided at the bottom of the support foot (5), the notch of the groove (6) faces the distribution beam (21), and the lower nut (71) is connected to the tension rod (3) and is located in the groove (6).

3. The temporary suspender rod with adjustable length for a suspension bridge as claimed in claim 1, characterized in that: An anchor head (8) is provided at the bottom of the steel wire rope (1), and the anchor head (8) abuts against the bottom of the distribution beam (21).

4. The temporary suspender rod with adjustable length for a suspension bridge as claimed in claim 3, characterized in that: A connecting groove (210) is provided on the lower flange at the bottom of the distribution beam (21), the notch of the connecting groove (210) faces the outside of the distribution beam (21), the maximum width of the connecting groove (210) is smaller than the diameter of the anchor head (8), and the anchor head (8) is clamped in the connecting groove (210).

5. The temporary suspender rod with adjustable length for a suspension bridge as claimed in claim 4, characterized in that: A limiting angle steel (211) is provided at a notch located in the connection groove (210) on the distribution beam (21).

6. The temporary suspender rod with adjustable length for a suspension bridge as claimed in claim 1, characterized in that: The lower end of the tension rod (3) is connected to an anchor nut (30), and the anchor nut (30) abuts against the steel anchor box (4).

7. The temporary suspender rod with adjustable length for a suspension bridge as claimed in claim 1, characterized in that: A washer (31) is provided on the tension rod (3) between the anchor nut (30) and the steel anchor box (4).

8. The temporary suspender rod with adjustable length for a suspension bridge as claimed in claim 6, characterized in that: The anchor nut (30) is configured as a spherical nut, and the spherical nut is rotatably connected to the tension rod (3).

9. The temporary suspender rod with adjustable length for a suspension bridge as claimed in claim 1, characterized in that: The main cable (20) is provided with a cable clamp (90), and the steel wire rope (1) is connected to the cable clamp (90).

10. The temporary suspender rod with adjustable length for a suspension bridge as claimed in claim 1, characterized in that: The steel wire rope (1) is provided with a sling clamp (91).

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