Inclined plane supporting bridge restraining support

Abstract

The utility model discloses an inclined plane supporting bridge restraining support, and relates to the technical field of bridge structures, the inclined plane supporting bridge restraining support comprises an upper seat plate, a spherical crown, a middle assembly, a lower seat assembly and a limiting adjusting assembly, the upper portion of the middle assembly is inserted into a groove of the upper seat plate, the spherical crown is arranged in the middle assembly, the middle assembly is arranged in the lower seat assembly, and the limiting adjusting assembly is arranged on the lower seat plate. The two limiting adjusting assemblies are symmetrically arranged on the two sides of the lower base assembly. When the lateral constraint support is subjected to the vertical load effect of the beam body, lateral horizontal force towards the midspan can be generated on the slope friction pair, so that the beam body generates lateral constraint, and the load force transmission path in the bridge direction on the large-span bridge is optimized. And the parts above the middle plate assembly of the lateral constraint support can meet the daily rotation requirement of the bridge, the rotation of the bridge does not affect the lower slope sliding pair, the slope sliding pair always keeps a certain slope, stable lateral compression horizontal force can be provided for a beam body, and damage caused by the fact that bridge concrete is pulled is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge structures, and in particular to a restrained bearing for an inclined support bridge. Background Art

[0002] As a key structural component, bridge bearings not only transmit upper loads to the piers and adapt to factors such as live loads, temperature changes, concrete shrinkage, and creep, but also ensure that the actual loads on the upper and lower structures meet design requirements. The conventional support arrangement for a three-span continuous beam is to install fixed and transverse supports on one main pier, longitudinal and multi-directional supports on another main pier, and longitudinal and multi-directional supports on the outer piers. However, this results in a larger temperature span and larger expansion and contraction of the beam joint on one side, necessitating a solution to this problem. Summary of the Invention

[0003] The object of the present invention is to provide a slope-supported bridge restraint bearing to overcome the above-mentioned defects in the prior art.

[0004] A slope-supported bridge restraint bearing includes an upper seat plate, a spherical crown, an intermediate component, a lower seat component and a limit adjustment component. The upper part of the intermediate component is inserted into the groove of the upper seat plate, the spherical crown is arranged in the intermediate component, the intermediate component is arranged in the lower seat component, and two limit adjustment components are provided and symmetrically arranged on both sides of the lower seat component.

[0005] Preferably, the intermediate component includes an intermediate plate, a side slide and an inclined slide. The intermediate plate is inserted into the groove of the upper seat plate. A spherical slide that abuts against the spherical crown is provided in the upper mounting groove at the top of the intermediate plate. The side slide is provided at the bottom of the intermediate plate and the slope of its lower end is 3‰. An inclined slide is provided in the lower mounting groove at the lower end of the side slide.

[0006] Preferably, a flat slide plate is provided on the top of the spherical cap, and the main body of the spherical cap is arranged in the upper mounting groove.

[0007] Preferably, the lower seat assembly includes a lower seat plate, a lateral stainless steel plate and a beveled stainless steel plate. The lower seat plate is provided with a raised rectangular limiting ring, the top bevel of the lower seat plate is provided with a beveled stainless steel plate that matches the inclination of the bevel slide plate, and lateral stainless steel plates are provided on both sides of the lower seat plate.

[0008] Preferably, the limit adjustment assembly includes a limit plate, an adjustment plate and an adjustment bolt. The limit plate is arranged on the inner side of the lower seat plate. Several adjustment plates are provided and are located between the limit plate and the inner wall of the lower seat plate. The adjustment bolt passes through the lower seat plate, the U-shaped notch on the adjustment plate and the limit plate and locks the three through the adjustment nut.

[0009] The present invention has the following advantages:

[0010] When the lateral restraint bearing is subjected to vertical loads from the beam, a lateral horizontal force toward the midspan is generated on the inclined friction pair, thereby creating lateral restraint on the beam and optimizing the load transmission path along the bridge on long-span bridges. Furthermore, the portion above the intermediate plate assembly of the lateral restraint bearing can accommodate the daily rotation requirements of the bridge. This rotation does not affect the lower inclined sliding pair, which maintains a constant slope, providing a stable lateral compressive horizontal force to the beam and preventing damage to the bridge concrete caused by tension. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is an internal cross-sectional view of the lateral restraint support of the present invention.

[0012] Figure 2 It is a longitudinal sectional view of the constraining support of the present invention.

[0013] Figure 3 Schematic diagram of the structure of the intermediate component of the present invention.

[0014] Figure 4 It is a structural schematic diagram of the lower seat assembly and the limit adjustment assembly of the present invention.

[0015] Figure 5 It is a structural schematic diagram of the limiting plate of the present invention.

[0016] Figure 6 It is a structural schematic diagram of the adjustment plate of the present invention.

[0017] Among them: 1. Upper seat plate; 11. Groove; 2. Middle assembly; 21. Middle plate; 22. Upper mounting groove; 23. Spherical slide; 24. Side slide; 25. Lower mounting groove; 26. Inclined slide; 3. Spherical crown; 31. Flat slide; 4. Lower seat assembly; 41. Lower seat plate; 42. Inclined stainless steel plate; 43. Lateral stainless steel plate; 5. Limit adjustment assembly; 51. Limit plate; 52. Adjustment plate; 521. U-shaped notch; 53. Adjustment bolt; 54. Adjustment nut. DETAILED DESCRIPTION

[0018] The specific implementation methods of the present invention will be further explained in detail below through the description of embodiments with reference to the accompanying drawings to help those skilled in the art have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present invention.

[0019] like Figure 1-3As shown, the present invention provides a restrained bearing for an inclined support bridge, comprising an upper seat plate 1, a spherical crown 3, an intermediate component 2, a lower seat component 4, and a limit adjustment component 5. The upper portion of the intermediate component 2 is inserted into the groove 11 of the upper seat plate 1, the spherical crown 3 is arranged in the intermediate component 2, and the intermediate component 2 is arranged in the lower seat component 4. A sliding gap is reserved between the intermediate component 2 and the lower seat component 4 along the bridge direction, and a limit adjustment component 5 is arranged between them to adjust the change in the reserved sliding gap caused by shrinkage displacement due to shrinkage creep of the beam body and other reasons, so as to ensure that the gaps reserved on both sides of the bearing along the bridge direction can meet the normal expansion and contraction displacement of the beam body;

[0020] The intermediate assembly 2 includes an intermediate plate 21, a side slide 24, and an inclined slide 26. The intermediate plate 21 is inserted into the groove 11 of the upper seat plate 1. A spherical slide 23 is provided in the upper mounting groove 22 at the top of the intermediate plate 21, which abuts against the spherical crown 3. A flat slide 31 is provided on the top of the spherical crown 3, and the main body of the spherical crown 3 is provided in the upper mounting groove 22. The side slide 24 is provided at the bottom of the intermediate plate 21 and has a slope of 3‰ at its lower end. The inclined slide 26 is provided in the lower mounting groove 25 at the lower end of the side slide 24, thereby ensuring that the top surface of the upper seat plate 1 and the bottom surface of the lower seat plate 41 are parallel, which facilitates the positioning and installation of the support.

[0021] like Figure 4 As shown, the lower seat assembly 4 includes a lower seat plate 41, a lateral stainless steel plate 43 and a bevel stainless steel plate 42. The lower seat plate 41 is provided with a raised rectangular limit ring, which limits the lateral displacement of the middle plate assembly 2 in the transverse bridge direction. The top bevel of the lower seat plate 41 is provided with a bevel stainless steel plate 42 that matches the inclination of the bevel slide 26, forming a bevel friction pair with the bevel slide, and lateral stainless steel plates 43 are respectively provided on both sides of the lower seat plate 41.

[0022] The limit adjustment assembly 5 includes a limit plate 51, an adjustment plate 52 and an adjustment bolt 53. Figure 5-6 As shown, the limit plate 51 is provided on the inner side of the lower seat plate 41, and the said adjustment plate 52 is provided with several and is located between the limit plate 51 and the inner wall of the lower seat plate 41. The said adjustment bolt 53 passes through the U-shaped notch 521 on the lower seat plate 41, the adjustment plate 52 and the limit plate 51 and is locked by the adjustment nut 54. The limit adjustment is performed by increasing or decreasing the number of the adjustment plates 52. The adjustment bolt 53 and the adjustment nut 54 also facilitate disassembly and installation.

[0023] When the lateral restraint bearing is subjected to vertical loads from the beam, a lateral horizontal force toward the midspan is generated on the inclined friction pair, thereby creating lateral restraint on the beam and optimizing the load transmission path along the bridge on long-span bridges. Furthermore, the portion above the intermediate plate assembly of the lateral restraint bearing can accommodate the daily rotation requirements of the bridge. This rotation does not affect the lower inclined sliding pair, which maintains a constant slope, providing a stable lateral compressive horizontal force to the beam and preventing damage to the bridge concrete caused by tension.

[0024] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the concept and technical solution of the present invention, or the present utility invention and technical solution are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A restraining bearing for an inclined support bridge, characterized by: The invention comprises an upper seat plate (1), a spherical crown (3), an intermediate component (2), a lower seat component (4) and a limit adjustment component (5); the upper portion of the intermediate component (2) is inserted into a groove (11) of the upper seat plate (1); the spherical crown (3) is arranged in the intermediate component (2); the intermediate component (2) is arranged in the lower seat component (4); and two limit adjustment components (5) are provided and symmetrically arranged on both sides of the lower seat component (4).

2. The inclined support bridge restraint bearing according to claim 1 is characterized in that: The intermediate component (2) includes an intermediate plate (21), a side slide plate (24) and an inclined slide plate (26). The intermediate plate (21) is inserted into the groove (11) of the upper seat plate (1). A spherical slide plate (23) is provided in the upper mounting groove (22) at the top of the intermediate plate (21) and is in contact with the spherical crown (3). The side slide plate (24) is provided at the bottom of the intermediate plate (21) and has a slope of 3‰ at its lower end. A inclined slide plate (26) is provided in the lower mounting groove (25) at the lower end of the side slide plate (24).

3. The inclined support bridge restraint bearing according to claim 2, characterized in that: A flat slide plate (31) is provided on the top of the spherical crown (3), and the main body of the spherical crown (3) is arranged in the upper mounting groove (22).

4. The inclined support bridge restraint bearing according to claim 2, characterized in that: The lower seat assembly (4) includes a lower seat plate (41), a lateral stainless steel plate (43) and an inclined stainless steel plate (42); the lower seat plate (41) is provided with a raised rectangular limiting ring; the top inclined surface of the lower seat plate (41) is provided with an inclined stainless steel plate (42) that matches the inclination of the inclined slide plate (26); and the two sides of the lower seat plate (41) are respectively provided with lateral stainless steel plates (43).

5. The inclined support bridge restraint bearing according to claim 4 is characterized in that: The limit adjustment assembly (5) comprises a limit plate (51), an adjustment plate (52) and an adjustment bolt (53); the limit plate (51) is arranged on the inner side of the lower seat plate (41); the adjustment plate (52) is provided with a plurality of limit plates (51) and is located between the limit plate (51) and the inner wall of the lower seat plate (41); the adjustment bolt (53) passes through the lower seat plate (41), the U-shaped notch (521) on the adjustment plate (52) and the limit plate (51) and is locked by an adjustment nut (54).

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