Spherical support with vibration reduction and energy consumption functions

Abstract

The utility model discloses a spherical support with vibration reduction and energy consumption functions, which comprises an upper support plate and a lower support plate, a vibration reduction component is arranged at the top of the upper support plate and comprises a vibration reduction pad and a steel plate provided with a groove, the vibration reduction pad is fixed in the groove, a steel sleeve used for corresponding to a support anchor bolt is embedded in the bottom surface of the vibration reduction pad, and the steel sleeve is fixed in the groove. A middle seat plate is arranged between the upper support plate and the lower support plate, the bottom face of the middle seat plate is a spherical face, the bottom of the middle seat plate is slidably connected to the concave spherical face of the top of the lower support plate, a damping steel ring is arranged between the outer side of the middle seat plate and the inner side of the lower support plate, and the top of the middle seat plate is slidably connected with a spherical crown lining plate. The top of the spherical crown lining plate is in sliding connection with the bottom face of the upper support plate. The vertical rigidity of the support is reduced through the damping assembly, the vertical damping function is achieved, the damping steel ring is arranged, the damping energy dissipation function is achieved, the upper structure is protected, and the problem that a common spherical steel support does not have the functions of shock absorption, shock isolation and shock absorption is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge bearings, in particular to a spherical bearing with vibration damping and energy dissipation functions. Background Technique

[0002] Bridge bearings are important connecting devices for bridge structures, which determine the force transmission path of bridge structures and the dynamic performance under seismic actions. Spherical bearings are often used in highway bridges and railway bridges. Such bearings do not have seismic isolation and vibration reduction functions. Under seismic actions, the limit devices and connecting bolts of fixed and single-direction bearings are fractured and sheared to varying degrees, and the displacement of movable bearings is too large, exceeding the designed displacement of the bearings, resulting in the phenomenon of voids; they do not have vibration reduction functions, and the vibration of the beam body brought during the operation of the bridge will be transmitted to the bridge pier through the bearings until it causes ground environmental vibration, which has an adverse impact on human health, surrounding building structures, and precision instrument equipment. Therefore, energy dissipation components are designed at the bearings to achieve shock absorption and energy dissipation during seismic displacement; vibration reduction components are designed to reduce the impact of high-frequency vertical vibration on the lower structure and the surrounding environment.

[0003] At present, friction pendulum bearings are mostly used for shock absorption structures, and various spring structures or rubbers are mostly used for vibration isolation structures, which can achieve shock absorption and energy dissipation during seismic displacement. However, in the face of high-frequency vertical vibration caused by vertical rail transit and road traffic, the vibration isolation effect on the structure is not obvious. Content of the Utility Model

[0004] The purpose of the utility model is to provide a spherical bearing with vibration damping and energy dissipation functions to solve the above problems.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A spherical bearing with vibration damping and energy dissipation functions of the utility model includes an upper bearing plate and a lower bearing plate. A shock absorption component is provided at the top of the upper bearing plate. The shock absorption component includes a shock absorption pad and a steel plate. The steel plate is a rectangle with a groove in the middle as a whole. The shock absorption pad is fixed in the groove. The bottom surface of the shock absorption pad is connected to the top surface of the upper bearing plate. A steel sleeve for corresponding to the bearing anchoring bolt is embedded in the bottom surface of the shock absorption pad. A middle bearing plate is provided between the upper bearing plate and the lower bearing plate. The bottom surface of the middle bearing plate is spherical. The bottom of the middle bearing plate is slidably connected to the concave spherical surface at the top of the lower bearing plate. A damping steel ring is provided between the outside of the middle bearing plate and the inside of the lower bearing plate. A spherical crown liner is slidably connected to the top of the middle bearing plate. The top of the spherical crown liner is slidably connected to the bottom surface of the upper bearing plate.

[0007] Furthermore, a deformation space is provided between the shock absorption pad and the inner wall of the steel plate.

[0008] Furthermore, the horizontal height of the top of the steel sleeve is lower than the horizontal height of the top surface of the shock pad.

[0009] Furthermore, a lower spherical slide plate and a lower spherical stainless steel plate are provided between the middle seat plate and the lower support plate. The lower spherical slide plate is installed at the bottom of the middle seat plate, the lower spherical stainless steel plate is connected to the concave spherical surface at the top of the lower support plate, and the middle seat plate is slidably connected to the lower spherical stainless steel plate through the lower spherical slide plate.

[0010] Furthermore, two symmetrically arranged semi-circular limit blocks are provided on the outer side of the middle seat plate. One end of the limit block is connected to the convex platform of the lower support plate through a shear pin, and the other end abuts against the side surface of the middle seat plate.

[0011] Furthermore, an upper spherical stainless steel plate and an upper spherical slide plate are provided between the middle seat plate and the spherical crown liner. The upper spherical slide plate is connected to the top surface of the middle seat plate, the upper spherical stainless steel plate is connected to the bottom surface of the spherical crown liner, the upper spherical slide plate is slidably connected to the upper spherical stainless steel plate, and a first sealing ring is provided on the outer side of the upper spherical slide plate. The first sealing ring is arranged on the top surface of the middle seat plate.

[0012] Furthermore, a flat slide plate and a flat stainless steel plate are provided between the spherical crown liner and the upper support plate. The flat slide plate is connected to the top surface of the spherical crown liner, the flat stainless steel plate is connected to the bottom surface of the upper support plate, the flat slide plate is slidably connected to the flat stainless steel plate, and a second sealing ring is provided on the outer side of the flat slide plate. The second sealing ring is installed on the top surface of the spherical crown liner.

[0013] Compared with the prior art, the beneficial technical effects of the present utility model are as follows:

[0014] By providing a shock absorption assembly, the present utility model reduces the vertical stiffness of the bearing, realizes the vertical shock absorption function, and sets a damping steel ring. During seismic displacement, relative displacement occurs between the middle seat plate and the lower support plate, releasing the seismic displacement. The damping steel ring plays a damping energy dissipation function to protect the upper structure, solving the problem that ordinary spherical steel bearings do not have the functions of seismic isolation and shock absorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following further describes the present utility model with reference to the accompanying drawings.

[0016] Figure 1 It is a cross-sectional view of a spherical bearing with shock absorption and energy dissipation functions of the present utility model;

[0017] Figure 2 It is a cross-sectional view of the shock absorption assembly;

[0018] Figure 3 It is a bottom view of the shock pad;

[0019] Figure 4 Schematic diagram for the installation of the damping steel ring;

[0020] Figure 5 Top view of the limit stop block;

[0021] Explanation of the reference numerals in the drawings: 1, upper support plate; 2, lower support plate; 3, middle support plate; 4, spherical crown liner; 5, damping steel ring; 6, shock pad; 7, steel plate; 8, steel sleeve; 9, deformation space; 10, lower spherical slide plate; 11, lower spherical stainless steel plate; 12, limit stop block; 13, upper spherical stainless steel plate; 14, upper spherical slide plate; 15, first sealing ring; 16, flat slide plate; 17, flat stainless steel plate; 18, second sealing ring. Specific implementation mode

[0022] As Figures 1-5 shown, a spherical bearing with vibration damping and energy dissipation functions includes an upper support plate 1 and a lower support plate 2.

[0023] A shock absorption assembly is provided at the top of the upper support plate 1. The shock absorption assembly includes a shock pad 6 and a steel plate 7. The steel plate 7 is a rectangle with a groove in the middle as a whole. The shock pad 6 is fixed in the groove. A deformation space 9 is provided between the shock pad 6 and the inner wall of the steel plate 7 to provide space for the deformation of the shock pad 6, avoiding the contact between the shock pad 6 and the external environment and ensuring the stable material performance. The bottom surface of the shock pad 6 is connected to the top surface of the upper support plate 1. A steel sleeve 8 for corresponding to the anchor bolts of the bearing is embedded in the bottom surface of the shock pad 6. The top horizontal height of the steel sleeve 8 is lower than the top surface horizontal height of the shock pad 6, so that the shock pad 6 can be normally compressed and deformed to ensure the stable vibration damping performance.

[0024] A middle support plate 3 is provided between the upper support plate 1 and the lower support plate 2. The bottom surface of the middle support plate 3 is spherical. The bottom of the middle support plate 3 is slidably connected to the concave spherical surface at the top of the lower support plate 2. A lower spherical slide plate 10 and a lower spherical stainless steel plate 11 are provided between the middle support plate 3 and the lower support plate 2. The lower spherical slide plate 10 is installed at the bottom of the middle support plate 3. The lower spherical stainless steel plate 11 is connected to the concave spherical surface at the top of the lower support plate 2. The middle support plate 3 is slidably connected to the lower spherical stainless steel plate 11 through the lower spherical slide plate 10.

[0025] Two symmetrically arranged semi-circular limit stop blocks 12 are provided outside the middle support plate 3. One end of the limit stop block 12 is connected to the convex platform of the lower support plate 2 through a shear pin, and the other end abuts against the side surface of the middle support plate 3.

[0026] A damping steel ring 5 is provided between the outer side of the middle seat plate 3 and the inner side of the lower support plate 2. The damping steel ring 5 is connected to the lower support plate 2 by screws. The damping steel ring 5 is in contact with but not connected to the middle seat plate 3, ensuring that the damping steel ring 5 can deform during seismic displacement and is integrally streamlined.

[0027] A spherical crown liner 4 is slidably connected to the top of the middle seat plate 3. An upper spherical stainless steel plate 13 and an upper spherical slide plate 14 are provided between the middle seat plate 3 and the spherical crown liner 4. The upper spherical slide plate 14 is connected to the top surface of the middle seat plate 3. The upper spherical stainless steel plate 13 is connected to the bottom surface of the spherical crown liner 4. The upper spherical slide plate 14 is slidably connected to the upper spherical stainless steel plate 13. A first sealing ring 15 is provided on the outer side of the upper spherical slide plate 14, and the first sealing ring 15 is arranged on the top surface of the middle seat plate 3.

[0028] The top of the spherical crown liner 4 is slidably connected to the bottom surface of the upper support plate 1. A flat slide plate 16 and a flat stainless steel plate 17 are provided between the spherical crown liner 4 and the upper support plate 1. The flat slide plate 16 is connected to the top surface of the spherical crown liner 4. The flat stainless steel plate 17 is connected to the bottom surface of the upper support plate 1. The flat slide plate 16 is slidably connected to the flat stainless steel plate 17. A second sealing ring 18 is provided on the outer side of the flat slide plate 16, and the second sealing ring 18 is installed on the top surface of the spherical crown liner 4.

[0029] The friction coefficients of the upper spherical slide plate 14 and the lower spherical slide plate 10 are different. Both the upper spherical slide plate 14 and the flat slide plate 16 are made of modified ultra-high molecular weight polyethylene with a friction coefficient of 0.02 - 0.05. The lower spherical slide plate 10 is made of high compressive materials such as plastic alloy MGA plate, carbon fiber composite plate, and nano-composite ultra-wear-resistant plastic plate with a friction coefficient of 0.05 - 0.09.

[0030] During specific implementation, when the bearing is subjected to the temperature change effect of the bridge, wind load, and dead and live loads, the upper spherical bearing of the bearing can ensure the safety of the upper structure through rotation and displacement. When an earthquake comes, the horizontal force on the bearing increases and exceeds the design shear force value of the shear pin. The shear pin is cut off, and the displacement of the middle seat plate 3 is released. The seismic displacement is released through relative sliding. When the middle seat plate 3 displaces, it compresses the damping steel ring 5 to deform. The damping force provided by the damping steel ring 5 and the friction force between the lower spherical slide plate 10 and the lower spherical stainless steel plate 11 play a damping energy dissipation function, reducing the overall displacement amplitude of the bearing, having a good seismic isolation and damping effect, reducing the impact of the earthquake on the upper structure, and improving the ability of the bridge to resist extreme loads such as earthquakes.

[0031] The vibration damping pad 6 controls the vertical vibration of the superstructure. The connecting bolts between the bearing and the beam bottom pass through the vibration damping pad 6. The steel plate 7 above the vibration damping pad 6 is clamped around the upper bearing plate 1 to position and seal the vibration damping pad 6, so as to prevent it from generating horizontal shear and ensure that it generates vertical compression deformation under the action of vertical load. Due to the characteristics of strong load-bearing capacity and good elasticity of the vibration damping pad 6, the downward conduction of the upper vibration is reduced.

[0032] The embodiments described above are only descriptions of the preferred modes of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A spherical bearing with vibration reduction and energy dissipation function, characterized in that: The invention comprises an upper support plate (1) and a lower support plate (2), wherein a shock absorbing assembly is provided on the top of the upper support plate (1), wherein the shock absorbing assembly comprises a shock absorbing pad (6) and a steel plate (7), wherein the steel plate (7) is in the shape of a rectangle with a groove in the middle, wherein the shock absorbing pad (6) is fixed in the groove, wherein the bottom surface of the shock absorbing pad (6) is connected to the top surface of the upper support plate (1), wherein a steel sleeve (8) for corresponding support anchor bolts is embedded on the bottom surface of the shock absorbing pad (6), wherein the upper support plate (1) is provided with a shock absorbing pad (6), wherein the shock absorbing pad (6) is provided with a steel sleeve (8) for corresponding support anchor bolts, wherein the upper support plate (1) is provided with a shock absorbing pad (6), wherein the shock absorbing pad (6 ... A middle seat plate (3) is provided between the seat plate (1) and the lower support plate (2), the bottom surface of the middle seat plate (3) is a spherical surface, the bottom of the middle seat plate (3) is slidably connected to the concave spherical surface at the top of the lower support plate (2), a damping steel ring (5) is provided between the outer side of the middle seat plate (3) and the inner side of the lower support plate (2), the top of the middle seat plate (3) is slidably connected to a spherical crown lining plate (4), and the top of the spherical crown lining plate (4) is slidably connected to the bottom surface of the upper support plate (1).

2. The spherical bearing with vibration reduction and energy dissipation function according to claim 1 is characterized in that: A deformation space (9) is provided between the shock-absorbing pad (6) and the inner wall of the steel plate (7).

3. The spherical bearing with vibration reduction and energy dissipation function according to claim 1 is characterized in that: The top level of the steel sleeve (8) is lower than the top surface level of the shock-absorbing pad (6).

4. The spherical bearing with vibration reduction and energy dissipation function according to claim 1 is characterized in that: A lower spherical slide plate (10) and a lower spherical stainless steel plate (11) are provided between the middle seat plate (3) and the lower support plate (2); the lower spherical slide plate (10) is installed at the bottom of the middle seat plate (3); the lower spherical stainless steel plate (11) is connected to the concave spherical surface at the top of the lower support plate (2); and the middle seat plate (3) is slidably connected to the lower spherical stainless steel plate (11) via the lower spherical slide plate (10).

5. The spherical bearing with vibration reduction and energy dissipation function according to claim 4 is characterized in that: Two symmetrically arranged semicircular limit blocks (12) are provided on the outer side of the middle seat plate (3); one end of the limit block (12) is connected to the boss of the lower support plate (2) through a shear pin, and the other end abuts against the side surface of the middle seat plate (3).

6. The spherical bearing with vibration reduction and energy dissipation function according to claim 1 is characterized in that: An upper spherical stainless steel plate (13) and an upper spherical slide plate (14) are provided between the middle seat plate (3) and the spherical crown lining plate (4); the upper spherical slide plate (14) is connected to the top surface of the middle seat plate (3); the upper spherical stainless steel plate (13) is connected to the bottom surface of the spherical crown lining plate (4); the upper spherical slide plate (14) is slidably connected to the upper spherical stainless steel plate (13); a first sealing ring (15) is provided on the outer side of the upper spherical slide plate (14); and the first sealing ring (15) is arranged on the top surface of the middle seat plate (3).

7. The spherical bearing with vibration reduction and energy dissipation function according to claim 1 is characterized in that: A flat slide plate (16) and a flat stainless steel plate (17) are provided between the spherical crown lining plate (4) and the upper support plate (1); the flat slide plate (16) is connected to the top surface of the spherical crown lining plate (4); the flat stainless steel plate (17) is connected to the bottom surface of the upper support plate (1); the flat slide plate (16) is slidably connected to the flat stainless steel plate (17); a second sealing ring (18) is provided on the outer side of the flat slide plate (16); and the second sealing ring (18) is installed on the top surface of the spherical crown lining plate (4).

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