Stay cable anchoring structure of steel bridge tower

Abstract

The utility model relates to a stay cable anchoring structure of a steel bridge tower, which comprises an anchor box, a steel tower wall, a tower wall stiffener, a diaphragm plate and a diaphragm plate stiffener, the anchor box is anchored on the diaphragm plate, and the anchor box is respectively connected with the steel tower wall, the tower wall stiffener, the diaphragm plate and the diaphragm plate stiffener. Compared with the prior art, the device is safe and reliable, the force transmission path is clear, and the plate is mainly pulled and pressed when being stressed; structurally, the anchoring structure is connected with the outer tower wall and the stiffener thereof, and the diaphragm plate and the stiffener thereof, so that the anchoring structure can adapt to the arrangement form of the spatial inhaul cable, and has the technical effects of simple anchoring structure, lower requirement on the arrangement form of the inhaul cable, space saving, low steel consumption, convenience in construction and no limitation to the section of the bridge tower and the direction of the inhaul cable.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering, in particular to a steel bridge tower inclined cable anchoring structure. Background Art

[0002] With the improvement of the domestic economic level, the construction of landscape bridges in cities has gradually emerged, and with the improvement of bridge construction technology and the aesthetic needs of the people, the shapes of landscape bridges have become more and more varied. Due to the high strength of steel structure, large strength-to-weight ratio, good plasticity and structural ductility, good seismic performance, high safety and reliability, factory production, convenient installation, fast construction speed, and the ability to adapt to changing shape requirements, the application of steel tower cable-stayed bridges in urban landscape bridges is increasing, and the arrangement of cable stays is no longer restricted to conventional forms. The variety of shapes has greatly increased the difficulty of designing and building cable-stayed bridges. As the key part of force transmission, the design of the cable anchor structure has always been the focus and difficulty in the design of cable-stayed bridges.

[0003] Patent CN202010018306.5 discloses a novel steel-concrete composite cable tower anchor structure, which is used to anchor the cable on the cable-stayed bridge in the tower anchor area; the novel steel-concrete composite cable tower anchor structure has multiple tower anchor structure segments, and the tower anchor structure segments include: a steel box, which has a central chamber and multiple side chambers symmetrically distributed on both sides of the central chamber in the longitudinal direction of the bridge; at least one group of cable anchor assemblies, which connects the two first side walls of the central chamber opposite to each other in the longitudinal direction of the bridge; each group of cable anchor assemblies is symmetrically and spatially cross-distributed in the central chamber, and includes at least four The patent CN202021735271.9 discloses a cable tower anchor structure of a cable-stayed bridge, comprising a cable tower, a cable anchoring tooth block is arranged on the inner side of the tower wall along the bridge direction of the cable tower, a cable pre-buried pipe is arranged in the front and rear tower walls of the cable tower, and an anchor pad for anchoring the cable is arranged at the intersection of the upper end of the pre-buried pipe and the upper tooth surface of the anchoring tooth block, and a steel tie rod is arranged in the cable tower along the bridge direction, and the steel tie rod connects the lower tooth surfaces of the two tooth blocks and is distributed on both sides of the cable pre-buried pipe. The four tower walls of the cable tower are all arranged with slow-bonding prestressed steel bundles. However, the above patents do not anchor the anchor box close to the position of the diaphragm, and at the same time have the force characteristics of the anchor beam and the structural characteristics of the anchor box, nor do they further limit the structure of the anchor box, that is, the anchor box web is the main force-transmitting plate of the anchoring structure, and the technical means of connecting it with the bridge tower reinforcement and the diaphragm cannot achieve the technical effect of simple structure, small anchoring space requirement, and not being limited by the bridge tower section and cable direction. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects of the above-mentioned prior art and to provide a new type of steel bridge tower inclined cable anchoring structure, which can adapt to the layout of spatial cables, has a simple anchoring structure, has low requirements on the cable layout, has small requirements on the anchoring space, saves space, has low steel consumption, is easy to construct, and is not limited by the technical effects of the bridge tower section and the cable direction.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] The utility model ensures the anchoring safety and anchoring space of the cable, so that some complex landscape bridge plans can be implemented.

[0007] The utility model provides a steel bridge tower cable anchoring structure, comprising an anchor box, a steel tower wall, a tower wall reinforcement, a transverse diaphragm, and a diaphragm reinforcement. The anchor box is anchored on the transverse diaphragm, and the anchor box is connected with the steel tower wall, the tower wall reinforcement, the transverse diaphragm, and the diaphragm reinforcement.

[0008] Furthermore, the anchor box includes an anchor box web, an anchor box reinforcement, an anchor pad and a pressure plate, and the anchor box web is respectively connected to the steel tower wall, the tower wall reinforcement, the diaphragm and the diaphragm reinforcement.

[0009] Furthermore, the web of the anchor box is aligned with and connected to the diaphragm stiffener to balance the horizontal force of the cables.

[0010] Furthermore, the anchor box web is aligned with and connected to the tower wall stiffener to transfer the vertical load of the cables.

[0011] Furthermore, the anchor box web is an integral structural plate.

[0012] Furthermore, the web of the anchor box is connected to the diaphragm and a rounded corner is provided on the contact surface to avoid a sudden change in stiffness.

[0013] Furthermore, the anchor point of the anchor box is arranged close to the diaphragm so that the horizontal force of the cable can be transmitted to the diaphragm as quickly as possible.

[0014] Furthermore, the cross-section of the steel tower wall is one of a circle, an ellipse, a quadrilateral, a hexagon and an octagon.

[0015] Furthermore, the tower wall is reinforced with a bending-torsion plate, which not only ensures the local stability and stiffness of the outer tower wall, but also ensures that the anchor beam web is a straight plate to adapt to the anchoring of the spatial torsion cable.

[0016] Furthermore, the anchor box is respectively connected to the steel tower wall, the tower wall reinforcement, the transverse diaphragm, and the diaphragm reinforcement by welding.

[0017] The shape of the diaphragm can be arranged according to the outer contour of the bridge tower and the overall structure, which can not only ensure the stability of the bridge tower, but also balance the horizontal tension of the cable, and serve as a maintenance platform for the anchor structure.

[0018] The utility model uses less steel and is light in weight. It can be welded together with the tower section in the factory and hoisted into place on site, which can not only ensure the docking accuracy and welding quality of key parts, but also save the high-altitude welding work of the anchoring structure, and the construction is simple.

[0019] The anchoring structure provided by the utility model can adapt to bridge towers with different cross sections; compared with the anchor beam structure, the anchor point arrangement in the utility model is not restricted by the length and angle of the anchor beam, and can be as close to the bridge tower wall as possible, which can save space inside the bridge tower on the one hand, and quickly transmit the vertical force of the cable to the tower wall on the other hand; compared with the ordinary anchor box structure, the web of the anchor box is connected to the diaphragm and its reinforcement as a whole, and the diaphragm is arranged as close to the anchor point as possible, which is not only a reinforcement for the diaphragm, but also can quickly transmit the horizontal force of the cable to the diaphragm. Between the anchoring structures corresponding to the upper and lower cables, the web of the anchor box can be transitioned through the bending and torsion stiffening plate of the bridge tower, which to a certain extent meets the spatial anchoring requirements of the cable and the requirements of the bridge landscape.

[0020] The force characteristics of this structure are that the horizontal force of the cable is mainly balanced by the bridge tower diaphragm and its reinforcement, and the vertical force of the cable is transmitted to the steel tower wall and its reinforcement through the anchor box web. The anchoring structure provided by the utility model provides a new idea for solving the problem of limited cable anchoring space and spatially arranged inclined cable anchoring. It has a reasonable structure and force, avoids material waste, reduces the construction difficulty of the anchoring position, ensures the installation quality, and provides convenience for future maintenance. It has great application value and promotion significance. This anchoring structure can be used for the anchoring of steel bridge towers with inner tower walls, and is also suitable for the anchoring of steel bridge towers with any cross-section without inner tower walls.

[0021] Compared with the prior art, the utility model has the following advantages:

[0022] (1) The utility model simplifies the anchoring structure and has the stress characteristics of the anchor beam and the structural characteristics of the anchor box. It is safe and reliable. In terms of stress, the plate is mainly subjected to tension and compression. In terms of structure, the anchoring structure is connected with the outer tower wall and its reinforcement and the cross partition and its reinforcement, which can adapt to the layout of the space cable. At the same time, the anchoring structure is simple, the requirements for the cable layout are low, space is saved, the steel consumption is low, and the construction is convenient.

[0023] (2) Wide application range. The technical effects are not limited by the cross section of the bridge tower and the direction of the cable, and can meet the functional and aesthetic requirements of landscape bridges. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the steel bridge tower cable anchorage structure Figure 1 .

[0025] Figure 2 Schematic diagram of the steel bridge tower cable anchorage structure Figure 2(excluding bulkhead).

[0026] Figure numerals: 1-steel tower wall; 2-cross partition; 3-tower wall reinforcement; 4-partition reinforcement; 5-anchor box web; 6-anchor box reinforcement; 7-anchor pad and pressure plate. DETAILED DESCRIPTION

[0027] The following is a detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments. Component models, material names, connection structures, control methods, algorithms and other features not clearly described in this technical solution are all considered to be common technical features disclosed in the prior art.

[0028] Example 1

[0029] This embodiment provides a steel bridge tower cable anchoring structure, such as Figure 1 , Figure 2 As shown, it includes an anchor box, a steel tower wall 1, a tower wall reinforcement 3, a diaphragm 2, and a diaphragm reinforcement 4. The anchor box is anchored on the diaphragm 2, and the anchor box is connected to the steel tower wall 1, the tower wall reinforcement 3, the diaphragm 2, and the diaphragm reinforcement 4 respectively.

[0030] In a specific embodiment, the anchor box includes an anchor box web 5, an anchor box stiffener 6, an anchor pad and a pressure plate 7. The anchor box web 5 is connected to the steel tower wall 1, the tower wall stiffener 3, the diaphragm 2 and the diaphragm stiffener 4 respectively.

[0031] In a specific embodiment, the anchor box web 5 is aligned with and connected to the diaphragm stiffener 4 to balance the horizontal force of the cable.

[0032] In a specific embodiment, the anchor box web 5 is aligned with and connected to the tower wall stiffener 3 for transferring the vertical load of the cable.

[0033] In a specific embodiment, the anchor box web 5 is an integral structural plate.

[0034] In a specific embodiment, the anchor box web 5 is connected to the diaphragm 2 and a rounded corner is provided on the contact surface to avoid a sudden change in stiffness.

[0035] In a specific embodiment, the anchor point of the anchor box is arranged close to the diaphragm 2 so that the horizontal force of the cable can be transmitted to the diaphragm 2 as quickly as possible.

[0036] In a specific implementation, the cross-section of the steel tower wall 1 is one of a circle, an ellipse, a quadrilateral, a hexagon and an octagon.

[0037] In a specific implementation, the tower wall reinforcement 3 is a bending and torsion plate, which not only ensures the local stability and stiffness of the outer tower wall, but also ensures that the anchor beam web is a straight plate to adapt to the anchoring of the spatial torsion cable.

[0038] In a specific implementation manner, the anchor box is respectively connected to the steel tower wall 1, the tower wall reinforcement 3, the diaphragm 2, and the diaphragm reinforcement 4 by welding.

[0039] The shape of the diaphragm 2 can be arranged according to the outer contour of the bridge tower and the overall structure, which can not only meet the stability of the bridge tower, but also balance the horizontal tension of the cable, and serve as a maintenance platform for the anchor structure.

[0040] This embodiment uses less steel and is light in weight. It can be welded together with the tower section in the factory and hoisted into place on site, which can not only ensure the docking accuracy and welding quality of key parts, but also save the high-altitude welding work of the anchoring structure, and the construction is simple.

[0041] The anchoring structure provided in this embodiment can adapt to bridge towers with different cross sections; compared with the anchor beam structure, the anchor point arrangement in the utility model is not restricted by the length and angle of the anchor beam, and can be as close to the bridge tower wall as possible, which can save space inside the bridge tower on the one hand, and quickly transmit the vertical force of the cable to the tower wall on the other hand; compared with the ordinary anchor box structure, the anchor box web 5 is connected to the diaphragm 2 and its reinforcement as a whole, and the diaphragm 2 is arranged as close to the anchor point as possible, which is not only a reinforcement for the diaphragm 2, but also can quickly transmit the horizontal force of the cable to the diaphragm 2. Between the anchoring structures corresponding to the upper and lower cables, the anchor box web 5 can be transitioned through the bridge tower bending and torsion stiffening plate, which to a certain extent meets the spatial anchoring requirements of the cable and the bridge landscape requirements.

[0042] The force characteristics of this structure are that the horizontal force of the cable is mainly balanced by the bridge tower diaphragm 2 and its reinforcement, and the vertical force of the cable is transmitted to the steel tower wall 1 and its reinforcement through the anchor box web 5. The anchoring structure provided by this embodiment provides a new idea for solving the problem of limited cable anchoring space and spatially arranged inclined cable anchoring. It has a reasonable structure and force, avoids material waste, reduces the construction difficulty of the anchoring position, ensures the installation quality, and provides convenience for future maintenance. It has great application value and promotion significance. This anchoring structure can be used for the anchoring of steel bridge towers with inner tower walls, and is also suitable for the anchoring of steel bridge towers with any cross-section without inner tower walls.

[0043] 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 steel bridge tower cable anchoring structure, comprising an anchor box, a steel tower wall (1), a tower wall reinforcement (3), a diaphragm (2), and a diaphragm reinforcement (4), characterized in that: The anchor box is anchored on the diaphragm (2), and the anchor box is respectively connected to the steel tower wall (1), the tower wall reinforcement (3), the diaphragm (2), and the diaphragm reinforcement (4); The anchor box comprises an anchor box web (5), an anchor box stiffener (6), an anchor pad and a pressure plate (7); the anchor box web (5) is respectively connected to the steel tower wall (1), the tower wall stiffener (3), the diaphragm (2) and the diaphragm stiffener (4).

2. The steel bridge tower cable-stayed anchor structure according to claim 1, characterized in that: The anchor box web (5) is aligned with and connected to the bulkhead stiffener (4) to balance the horizontal force of the cable.

3. The steel bridge tower cable-stayed anchor structure according to claim 1, characterized in that: The anchor box web (5) is aligned with and connected to the tower wall reinforcement (3) and is used to transfer the vertical load of the cable.

4. The steel bridge tower cable-stayed anchor structure according to claim 1, characterized in that: The anchor box web (5) is an integral structural plate.

5. The steel bridge tower cable-stayed anchor structure according to claim 1, characterized in that: The anchor box web (5) is connected to the transverse diaphragm (2) and is provided with a rounded corner on the contact surface.

6. The steel bridge tower cable-stayed anchor structure according to claim 1, characterized in that: The anchor point of the anchor box is arranged close to the diaphragm (2).

7. The steel bridge tower cable-stayed anchor structure according to claim 1, characterized in that: The cross-sectional form of the steel tower wall (1) is one of a circle, an ellipse, a quadrilateral, a hexagon and an octagon.

8. The steel bridge tower cable-stayed anchor structure according to claim 1, characterized in that: The tower wall reinforcement (3) is a bending and torsion plate.

9. The steel bridge tower cable-stayed anchor structure according to claim 1, characterized in that: The anchor box is respectively connected to the steel tower wall (1), the tower wall reinforcement (3), the transverse diaphragm (2), and the diaphragm reinforcement (4) by welding.

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