Bearing structure with wind-resistant support convenient to replace

Abstract

The invention relates to a bearing structure with a wind-resistant support convenient to replace. The bearing structure comprises a bearing steel plate, a fixed steel plate, a pushing plate, bolts, a polytetrafluoroethylene sliding plate, steel balls and springs. The bearing steel plates are welded to a bridge tower and a main beam wind-resistant bracket respectively, the fixing steel plates are fastened to the bearing steel plates through bolts, and the pushing plates are welded to the edges of the bearing steel plates. And the teflon sliding plate is adhered to the inner side of the bearing steel plate. The bearing steel plate is drilled according to the diameter of the steel ball, the spring and the steel ball are installed, one end of the spring is welded in the hole of the bearing steel plate, and the other end is welded to the steel ball. The connection between the wind-resistant support and the bridge tower girder is optimized, so that the wind-resistant support is convenient to replace. The method is suitable for various types of basin type and ball steel wind-resistant supports and has good universality, meanwhile, the replacement difficulty of the wind-resistant supports is reduced, and construction safety and convenience are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of bridge bearings and relates to a supporting structure that is convenient for replacing wind-resistant bearings. Background Art

[0002] The bridge bearing is an important force transmission device of the bridge. The wind bearing is an important structural component connecting the main beam and the bridge tower. It can reliably transmit the lateral wind load borne by the main beam to the bridge tower and release the displacement and rotation. Usually, one end of the wind bearing is bolted or welded to the bracket extending from the main beam, and the other end is bolted or welded to the bracket of the bridge tower.

[0003] According to feedback from engineering practice, various types of diseases will appear in the bearings after about 20 years of service, seriously affecting the safety of structural operation. During the entire life cycle of the bridge, the bearings need to be replaced at least 4 to 5 times. Unlike the replacement of vertical bearings, the jacking equipment can be directly set up at the lower beam. The wind-resistant bearing is a suspended structure, and in order to reduce the size of the main tower, the distance between the bridge tower and the main beam is narrow, so the replacement operation space of the wind-resistant bearing is small.

[0004] In order to solve the problem of difficulty in replacing wind-resistant bearings and high frequency of replacement during the life cycle of the bridge, the existing ideas focus on the invention of wind-resistant bearing forms. For example, Chinese patent CN114855602A invented a wind-resistant bearing that is easy to replace the sliding pair, and CN108166379A invented a replaceable transverse wind-resistant structure and method suitable for cable-stayed bridges and suspension bridges. If the wind-resistant bearing steel plate and the bracket are connected by welding, it takes a lot of man-hours to cut the welds of the bearing steel plate and the bracket, and it is a fire operation, which has a great safety risk. If the wind-resistant bearing steel plate and the bracket are connected by bolting, a large number of bolts are required to be tightened, and the bolts at the bottom of the steel plate are difficult to operate. Summary of the invention

[0005] The present invention aims to provide a supporting structure for facilitating replacement of a wind-resistant support, so as to solve the problem in the prior art that the replacement of the wind-resistant support is difficult and the operation is complicated.

[0006] The present invention is achieved by adopting the following technical solutions:

[0007] A supporting structure for facilitating replacement of a wind-resistant support, the supporting structure comprising a supporting steel plate, a fixing steel plate and a push plate; the left side, the right side and the bottom side of the supporting steel plate are all groove-shaped structures;

[0008] The fixed steel plate is fastened to the upper side of the supporting steel plate by bolts, and the push plate is welded to the outer edges of the left and right sides of the supporting steel plate; the PTFE slide plate is pasted on the inner side of the supporting steel plate; the supporting steel plate is drilled according to the diameter of the steel ball, and a spring and a steel ball are installed, one end of the spring is welded to the opening of the supporting steel plate, and the other end is welded to the steel ball. When the wind-resistant bearing is inserted into or pulled out of the supporting structure, the steel ball can reduce the resistance, and the spring can tighten the wind-resistant bearing steel plate. The function of the PTFE slide plate pasted on the surface is to reduce the friction between the wind-resistant bearing steel plate and the supporting steel plate when the wind-resistant bearing is inserted into or pulled out of the supporting structure.

[0009] Furthermore, the center spacing between the openings on the supporting steel plate is 10 cm.

[0010] Furthermore, the diameter of the steel ball is 2.5 cm, and the diameter of the spring is 2.2 cm.

[0011] Furthermore, the fixing steel plate is designed in the shape of a letter "┐", engages with the supporting steel plate, and is fastened and connected by bolts (4).

[0012] Furthermore, the push plate (3) is a square structure with a circular groove dug in the middle, which serves as the action point of the construction jack when the wind-resistant support is installed.

[0013] The present invention provides a supporting structure that is convenient for replacing a wind-resistant bearing, and has the following beneficial effects: if the wind-resistant bearing steel plate and the corbel are connected by welding, a large amount of man-hours are required to cut the welds of the bearing steel plate and the corbel, and this is a hot operation, which has a greater safety risk; if the wind-resistant bearing steel plate and the corbel are connected by bolting, a large number of bolts need to be tightened, and the bolts at the bottom of the steel plate are difficult to operate. The present invention does not require hot operations, and only the upper bolts need to be tightened, so the construction is safe and convenient. In addition, the present invention reserves a jack push plate, and no additional temporary measures need to be taken, so the construction is convenient. The present invention is applicable to various types of wind-resistant bearings, and only the size of the upper and lower steel plates of the wind-resistant bearing needs to be matched, and it has good versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of a supporting structure for facilitating replacement of a wind-resistant bearing according to the present invention.

[0015] Figure 2 It is a 1 / 4 cutaway schematic diagram of a supporting structure for facilitating replacement of a wind-resistant bearing according to the present invention.

[0016] Figure 3 It is a schematic diagram of the supporting steel plate of the present invention;

[0017] Figure 4 It is a schematic diagram of a fixed steel plate of the present invention;

[0018] Icons: 1. Supporting steel plate; 2. Fixed steel plate; 3. Push plate; 4. Bolt; 5. PTFE slide plate; 6. Steel ball; 7. Spring. DETAILED DESCRIPTION

[0019] In order to better understand the purpose, structure and function of the present invention, a supporting structure for facilitating replacement of a wind-resistant support of the present invention is further described in detail below in conjunction with the accompanying drawings.

[0020] For large-span bridges represented by cable-stayed bridges and suspension bridges, the lateral wind load is much greater than the longitudinal external load. Therefore, wind-resistant bearings are usually set between the bridge tower and the main beam to restrain the lateral displacement of the beam and effectively transfer the lateral wind load of the main beam to the bridge tower.

[0021] like Figure 1 and Figure 2 As shown, the present invention proposes a supporting structure for facilitating replacement of a wind-resistant bearing, comprising a supporting steel plate 1, a fixing steel plate 2, a push plate 3, bolts 4, a polytetrafluoroethylene slide plate 5, a steel ball 6 and a spring 7.

[0022] A supporting structure for facilitating replacement of a wind-resistant support is installed on the bridge tower wind-resistant support bracket and the main beam wind-resistant support bracket respectively. The geometric center of the supporting steel plate 1 is on the same horizontal line as the geometric center of the bridge tower wind-resistant support bracket and the main beam wind-resistant support bracket, so as to ensure that the wind-resistant support meets the force requirements after installation.

[0023] The supporting steel plate 1 adopts a groove-shaped design. The internal length, width and height of the groove of the supporting steel plate 1 at the bridge tower are consistent with the length, width and height of the steel plate on the side of the wind-resistant bearing bridge tower. The length, width and height of the groove of the supporting steel plate 1 at the main beam are consistent with the length, width and height of the steel plate on the side of the wind-resistant bearing bridge tower. Therefore, when the wind-resistant bearing is inserted into the supporting structure, the bearing is stable and does not slide.

[0024] The supporting steel plate 1 is pasted with a PTFE plate 5 on its surface, and holes are evenly opened according to the diameter of the steel ball 6, with a center spacing of 10 cm. The function of pasting the PTFE plate 5 on the surface of the supporting steel plate 1 is to reduce the friction between the wind-resistant support steel plate and the supporting steel plate 1 when the wind-resistant support is inserted into or pulled out of the supporting structure.

[0025] The steel ball 6 has a diameter of 2.5 cm, the spring 7 has a diameter of 2.2 cm, one end of the spring 7 is welded to the steel ball 6, and the other end is welded to the opening of the supporting steel plate 1. When the wind-resistant support is inserted into or pulled out of the supporting structure, the steel ball can reduce resistance, and the spring can press against the wind-resistant support steel plate.

[0026] The fixing steel plate 2 is designed in a "┐" shape, engages with the supporting steel plate 1, and is fastened and connected by bolts (4).

[0027] The push plate 3 is a square structure with a circular groove in the middle, which serves as the action point of the construction jack when the wind-resistant support is installed.

[0028] In summary, the supporting structure of the present invention is convenient for replacing the wind-resistant bearing. When the wind-resistant bearing needs to be replaced, the construction jack is installed on the push plate 3, and oil pressure is applied to release the pre-pressure of the wind-resistant bearing, and then the bolts 4 are removed and the fixed steel plate 2 is removed, and then the old wind-resistant bearing is pulled out by the lifting equipment. After checking the PTFE slide plate 5 and the steel ball 6, the new wind-resistant bearing is inserted, the fixed steel plate 2 and the bolts 4 are installed, and finally the jack structure is removed.

[0029] The present invention aims to invent a supporting structure that is convenient for replacing wind-resistant bearings, optimize the connection between wind-resistant bearings and bridge tower main beams, and thus facilitate the replacement of wind-resistant bearings. The present invention is applicable to various types of pot-type and ball steel wind-resistant bearings, has good versatility, and reduces the difficulty of replacing wind-resistant bearings, thereby improving construction safety and convenience.

[0030] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A supporting structure for facilitating replacement of wind-resistant bearings, characterized in that: The supporting structure comprises a supporting steel plate (1), a fixing steel plate (2) and a push plate (3); the left side, the right side and the bottom side of the supporting steel plate (1) are all groove-shaped structures; The fixed steel plate (2) is fastened to the upper side of the supporting steel plate (1) by bolts (4), and the push plate (3) is welded to the outer edges of the left and right sides of the supporting steel plate (1); the polytetrafluoroethylene slide plate (5) is pasted to the inner side of the supporting steel plate (1); the supporting steel plate (1) is drilled according to the diameter of the steel ball (6), and the spring (7) and the steel ball (6) are installed, one end of the spring (7) is welded to the opening of the supporting steel plate (1), and the other end is welded to the steel ball (6).

2. A supporting structure for facilitating replacement of wind-resistant bearings according to claim 1, characterized in that: The center spacing between the openings on the supporting steel plate (1) is 10 cm.

3. A supporting structure for facilitating replacement of wind-resistant bearings according to claim 1, characterized in that: The diameter of the steel ball (6) is 2.5 cm, and the diameter of the spring (7) is 2.2 cm.

4. A supporting structure for facilitating replacement of wind-resistant bearings according to claim 1, characterized in that: The fixing steel plate (2) is designed in the shape of a letter "┐" and is engaged with the supporting steel plate (1).

5. The supporting structure for facilitating replacement of wind-resistant bearings according to claim 1, characterized in that: The push plate (3) is a square structure with a circular groove in the middle.

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