Pressure-bearing spherical bridge support

Abstract

The utility model discloses a pressure-bearing spherical bridge support which comprises a base structure, a pressure-bearing structure installed in the middle of the base structure and a fixing mechanism used for fixing the base structure. The base structure comprises the upper end of an abutment and a beam bottom, two fixing mechanisms are symmetrically installed at the upper end of the abutment and the bottom end of the beam bottom respectively, the upper end of the abutment is fixed through the two corresponding fixing mechanisms, the base structure comprises the beam bottom, and the bottom end of the beam bottom is fixed through the two corresponding fixing mechanisms. The device solves the problems that due to the limitation of difficulty in manufacturing and forming of a large-diameter rubber plate, a basin-type rubber pressure-bearing support is small in rotation angle, the design requirement for a large rotation angle cannot be met, and the basin-type rubber pressure-bearing support cannot be designed to be large in bearing capacity, the design avoids the situation that a stress plane is disengaged, collision is generated during loading, damage is caused, and the service life of the basin-type rubber pressure-bearing support is prolonged. Therefore, the support is uniformly stressed, and the load transmission is gentle; and the defects of short service life, low rotating capacity, insufficient bearing capacity and the like of a basin-type rubber pressure-bearing support are overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of spherical bearings, and more specifically, to a pressure-bearing spherical bridge bearing. Background Art

[0002] Bridge bearings are important structural components that connect the superstructure and substructure of a bridge. They are located between the bridge and the pad stone. They can reliably transfer the load and deformation (displacement and rotation) borne by the superstructure of the bridge to the substructure of the bridge. They are important force transmission devices of the bridge. There are two types of bearings: fixed bearings and movable bearings. Commonly used bearing forms in bridge engineering include: asphalt felt or flat bearings, plate rubber bearings, spherical bearings, steel bearings and special bearings.

[0003] At present, the pressure bearings used in bridge projects on the market are mainly pot-type rubber pressure bearings. This pot-type rubber pressure bearing has a rubber plate embedded in the pot cavity, and the rubber plate is compressed and deformed to achieve the function of bearing horizontal reaction force and bearing rotation. However, the rubber material in this pot-type rubber pressure bearing is prone to aging and hardening, and even eventually fails, causing the pot-type rubber pressure bearing to lose its bearing and rotation functions, and thus the safe use of the pot-type rubber pressure bearing and the bridge cannot be guaranteed.

[0004] At the same time, due to the difficulty in manufacturing and molding large-diameter rubber plates, the rotation angle of this type of basin-type rubber pressure bearing is small and cannot meet the design requirements of large rotation angles; and, due to the limitation of the compression deformation capacity of the rubber plate, this type of basin-type rubber pressure bearing cannot be designed with a large bearing capacity. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a pressure-bearing spherical bridge bearing.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model is further configured as: a pressure-bearing spherical bridge bearing, comprising a base structure, a pressure-bearing structure installed in the middle position of the base structure, and a fixing mechanism for fixing the base structure.

[0008] The base structure includes an upper end of a pier and a beam bottom, and two fixing mechanisms are symmetrically installed on the upper end of the pier and the bottom end of the beam bottom. The base structure includes a beam bottom, and the bottom end of the beam bottom is fixed by two corresponding fixing mechanisms.

[0009] By adopting the above technical solution, the pier and the beam bottom can be firmly installed, and the three structures can be installed in coordination to improve the reliability of the bridge bearings.

[0010] The utility model is further configured as follows: the pressure-bearing structure comprises a pier support and a beam bottom support, the pier support is fixedly connected to the pier, and the beam bottom support is fixedly connected to the beam bottom.

[0011] The utility model is further configured as follows: a plane wear-resistant plate is installed at the lower end of the pier support, and a transition seat plate is arranged above the beam bottom support; the transition seat plate is arranged in the hollow position of the plane wear-resistant plate.

[0012] The utility model is further configured as follows: a spherical cap lining plate is installed below the plane wear-resistant plate, a spherical wear-resistant plate is installed above the transition seat plate, and a sealing gasket is arranged between the spherical cap lining plate and the spherical wear-resistant plate.

[0013] The utility model is further configured as follows: the fixing mechanism comprises an anchor bolt, a spherical washer is arranged below the anchor bolt, a thread groove is arranged below the spherical washer, and the anchor bolt is installed in the thread groove.

[0014] The utility model is further configured as follows: the fixing mechanism comprises a geological layer, a pouring groove is arranged on the periphery of the thread groove, and the pouring groove is arranged in the geological layer.

[0015] By adopting the above technical solution, the sealing gasket is arranged between the spherical crown lining and the spherical wear-resistant plate. In a tightly fitted state, the sealing is improved. The anchor bolt is installed in the threaded groove and there is a pouring groove around it for pouring, which further increases the stability of the anchor bolt.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] (1) The utility model has a light and compact structure, close contact between the pressure-bearing surfaces, a long service life of the main load-bearing components, and is safe and reliable. A spherical wear-resistant plate is inlaid above the transition seat plate, a spherical crown lining plate is arranged between the flat wear-resistant plate and the transition seat plate, the spherical crown lining plate cooperates with the flat wear-resistant plate, a flat stainless steel plate is arranged between the flat wear-resistant plate and the spherical crown lining plate, and a flat wear-resistant plate is inlaid on the plane of the spherical crown lining plate, so that the bearing surfaces are in close contact when the spherical surface rubs, and a smooth and uniform load transfer is achieved.

[0018] 2. At the same time, this bearing has the same service life as the bridge. Compared with the existing pot-type rubber pressure bearing, this bearing overcomes the shortcomings of the pot-type rubber pressure bearing, such as short service life, small rotation ability, and insufficient bearing capacity, and can meet the design requirements of various bridge projects.

[0019] 3. The curved surface of the spherical wear-resistant plate in the utility model fits tightly with the curved surface of the transition seat plate; when in use, the rebound force of the spherical wear-resistant plate pushes the transition seat plate, ensuring that the pressure-bearing surface of the spherical friction pair is always in close contact, avoiding the force-bearing plane from being emptied, causing collision and damage when loaded, so that the bearing is evenly stressed and the load is transferred smoothly. The vertical bearing capacity of the bearing reaches 5000KN, and the horizontal bearing capacity is greater than 15% of the vertical bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a pressure-bearing spherical bridge bearing in the utility model.

[0021] Figure 2 It is a structural schematic diagram of the pressure-bearing structure in the utility model.

[0022] Figure 3 It is a structural schematic diagram of the fixed structure in the utility model.

[0023] Description of reference numerals: 1, base structure; 11, pier; 12, beam bottom;

[0024] 2. Pressure-bearing structure; 21. Abutment bracket; 22. Flat wear-resistant plate; 23. Ball crown lining plate; 24. Sealing pad; 25. Spherical wear-resistant plate; 26. Transition seat plate; 27. Beam bottom bracket;

[0025] 3. Fixing mechanism; 31. Anchor bolt; 32. Casting groove; 33. Spherical washer; 34. Geological layer; 35. Thread groove. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0028] For example, see Figure 1-Figure 3 , the utility model provides the following technical solutions:

[0029] See also Figure 1 , a pressure-bearing spherical bridge bearing, comprising a base structure 1, a pressure-bearing structure 2 installed in the middle of the base structure 1, and a fixing mechanism 3 for fixing the base structure 1;

[0030] The base structure 1 includes a pier 11, the upper surface of the pier 11 is a rectangle, the width of the pier 11 is b, the value of b is 575MM, the length of the pier 11 is c, the value of c is 790MM, the upper end of the pier 11 and the bottom end of the beam bottom 12 are symmetrically installed with two fixing mechanisms 3, the bottom end of the beam bottom 12 is fixed by the corresponding two fixing mechanisms 3, the distance between the center points of the two fixing mechanisms 3 corresponding to the pier 11 is d, the value of d is 425MM±0.02MM, the center point of the fixing mechanism 3 corresponding to the pier 11 to the pier 11 The distance in the middle is e, and the value of e is 345MM. The base structure 1 includes a beam bottom 12. The upper surface of the beam bottom 12 is a rectangle. The width of the beam bottom 12 is f, and the value of f is 480MM. The length of the beam bottom 12 is g, and the value of g is 500MM. The distance between the center points of the two fixing mechanisms 3 corresponding to the beam bottom 12 is h, and h is 375MM±0.02MM. The distance from the center point of the fixing mechanism 3 corresponding to the beam bottom 12 to the middle of the beam bottom 12 is i, and the value of i is 200MM. The pier 11 and the beam bottom 12 are installed in upper and lower symmetrical positions.

[0031] See also Figure 2 The pressure-bearing structure 2 includes a pier support 21 and a beam bottom support 27. The pier support 21 is above the beam bottom support 27. The upper surface of the pier support 21 is fixedly connected to the lower surface of the pier 11. The pier support 21 is a rectangular block, which can expand the contact area between the pier support 21 and the pier 11 and increase the firmness of the connection. The beam bottom support 27 is a rectangular block, and the lower surface of the beam bottom support 27 is fixedly connected to the upper surface of the beam bottom 12.

[0032] A flat wear-resistant plate 22 is installed at the lower end of the pier bracket 21, and a transition seat plate 26 is arranged above the beam bottom bracket 27; the transition seat plate 26 is arranged in the hollow position of the flat wear-resistant plate 22, and the transition seat plate 26 is below the flat wear-resistant plate 22. The distance between the lower surface of the transition seat plate 26 and the upper surface of the flat wear-resistant plate 22 is a, and the value of a is 120MM.

[0033] A spherical cap lining plate 23 is installed below the flat wear plate 22. The spherical cap lining plate 23 is the core of the spherical bearing. Its flat part is provided with a groove for embedding the flat wear plate 22 to fix the flat wear plate 22. The concave plate of the lower bearing is made of steel plate or casting, which mainly plays the role of fixing the spherical wear plate 25 and dispersing and transmitting the bearing reaction force to the piers and abutments. A spherical wear plate 25 is installed above the transition seat plate 26. A sealing gasket 24 is arranged between the spherical cap lining plate 23 and the spherical wear plate 25. The sealing gasket 24 fits tightly with the spherical cap lining plate 23 and the spherical wear plate 25, so that the bearing surface is in close contact when the spherical surface rubs, realizing a smooth and uniform load transmission.

[0034] See also Figure 3The fixing mechanism 3 includes an anchor bolt 31, and a spherical washer 33 is arranged below the anchor bolt 31. The anchor bolt 31 makes the pier 11 and the beam bottom 12 firmly bonded. A threaded groove 35 is arranged below the spherical washer 33. The depth of the threaded groove 35 is j, and the value of j is 250MM. The diameter of the threaded groove 35 circle is k, and the value of k is 60MM. The anchor bolt 31 is installed in the threaded groove 35, thereby realizing the connection between the anchor bolt 31 and the threaded groove 35 and providing a pre-tightening force for fixing in the base structure 1.

[0035] The fixing mechanism 3 includes a geological layer 34, and a grouting groove 32 is arranged on the periphery of the threaded groove 35. The depth of the grouting groove 32 is l, and the value of l is 280MM. The diameter of the grouting groove 32 is m, and the value of m is 120MM. The grouting groove 32 is used to fill the grouting epoxy mortar, and the grouting groove 32 is arranged in the geological layer 34.

[0036] By setting the width of the pier 11, the length of the pier 11, the distance between the center points of the two fixing mechanisms 3 corresponding to the pier 11, the distance from the center point of the fixing mechanism 3 corresponding to the pier 11 to the middle of the pier 11, the width of the beam bottom 12, the length of the beam bottom 12, the distance between the center points of the two fixing mechanisms 3 corresponding to the beam bottom 12, the distance from the center point of the fixing mechanism 3 corresponding to the beam bottom 12 to the middle of the beam bottom 12, the distance between the lower surface of the transition seat plate 26 and the upper surface of the plane wear-resistant plate 22, the depth of the thread groove 35, the diameter of the circle of the thread groove 35, the depth of the pouring groove 32, and the diameter of the circle of the pouring groove 32, the bearing is evenly stressed and the load is transferred smoothly. The vertical bearing capacity of the bearing reaches 5000KN, and the horizontal bearing capacity is greater than 15% of the vertical bearing capacity.

[0037] Specifically, the pier 11 is fixedly connected by anchor bolts 31. The anchor bolts 31 utilize the structure of the screw itself and cooperate with special parts so that it can expand in the bolt hole and anchor on the concrete foundation. Therefore, it is called anchor bolts 31. The pier bracket 21 supports and connects the pier 11. The flat wear-resistant plate 22 is connected below the pier bracket 21. The beam bottom 12 is fixedly connected by anchor bolts 31. The beam bottom 12 supports and connects to the beam bottom bracket 27. The beam bottom bracket 27 supports and connects to the transition seat plate 26. A pressure-bearing structure 2 is arranged between the flat wear-resistant plate 22 and the transition seat plate 26. The pressure-bearing structure 2 can offset part of the pressure well and enhance the pressure-bearing effect of the bridge structure.

[0038] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

Claims

1. A pressure-bearing spherical bridge bearing, characterized in that: It comprises a base structure (1), a pressure-bearing structure (2) installed in the middle of the base structure (1), and a fixing mechanism (3) for fixing the base structure (1); The base structure (1) comprises an upper end of a pier (11) and a beam bottom (12); the upper end of the pier (11) and the bottom end of the beam bottom (12) are symmetrically mounted with two fixing mechanisms (3), respectively; the upper end of the pier (11) is fixed by the corresponding two fixing mechanisms (3); the base structure (1) comprises a beam bottom (12); the bottom end of the beam bottom (12) is fixed by the corresponding two fixing mechanisms (3); The pressure-bearing structure (2) comprises a pier support (21) and a beam bottom support (27), wherein the pier support (21) is fixedly connected to the pier (11), and the beam bottom support (27) is fixedly connected to the beam bottom (12); A flat wear-resistant plate (22) is installed at the lower end of the pier support (21), a transition seat plate (26) is arranged above the beam bottom support (27), and the transition seat plate (26) is arranged in a hollow position of the flat wear-resistant plate (22); A spherical cap lining plate (23) is installed below the flat wear-resistant plate (22), a spherical wear-resistant plate (25) is installed above the transition seat plate (26), and a sealing gasket (24) is arranged between the spherical cap lining plate (23) and the spherical wear-resistant plate (25).

2. The pressure-bearing spherical bridge bearing according to claim 1, characterized in that: The fixing mechanism (3) comprises an anchor bolt (31), a spherical washer (33) is arranged below the anchor bolt (31), a thread groove (35) is arranged below the spherical washer (33), and the anchor bolt (31) is installed in the thread groove (35).

3. The pressure-bearing spherical bridge bearing according to claim 2, characterized in that: The fixing mechanism (3) comprises a geological layer (34), a grouting groove (32) is arranged on the periphery of the thread groove (35), and the grouting groove (32) is arranged in the geological layer (34).

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