Multi-curved-surface combined different-direction and different-performance shock insulation type bridge support

Abstract

The invention belongs to the technical field of bridge supports, and particularly relates to a multi-curved-surface combined shock insulation type bridge support with different directions and different functions. A middle steel lining plate is located between an upper support plate and a lower support plate; an upper sliding plate is arranged between the upper surface of the middle steel lining plate and the upper support plate, a lower sliding plate is arranged between the lower surface of the middle steel lining plate and the lower support plate, the upper sliding plate is a double-curved-surface sliding plate, the lower sliding plate is a double-curved-surface sliding plate or a spherical-surface sliding plate, when the lower sliding plate is a double-curved-surface sliding plate, the upper surface and the lower surface of the lower sliding plate are curved surfaces, and the transverse curvature of the curved surfaces is different from the longitudinal curvature; the lower surface of the upper support plate and the upper surface of the middle steel lining plate are both curved surfaces, and the transverse curvature of the curved surfaces is different from the longitudinal curvature; when the lower sliding plate is a double-curved-surface sliding plate, the lower surface of the middle steel lining plate and the upper surface of the lower support plate are both curved surfaces, and the transverse curvature of the curved surfaces is different from the longitudinal curvature. According to the invention, an original spherical surface structure is optimized into a curved surface structure with different longitudinal and transverse curvature radiuses, and differential design of performance in all directions is realized.

Description

Technical Field

[0001] The invention belongs to the field of bridge bearings, in particular to a seismic isolation bridge bearing with multiple curved surfaces combined with different directions and different functions. Background Art

[0002] The destructive effect of earthquake forces on bridges and buildings can cause earthquake disasters such as bridge beams falling or building collapse, endangering people's lives. In order to control the impact of earthquake disasters to a certain extent, pendulum bearings with shock absorption and seismic isolation functions are increasingly widely used in bridges or other construction projects. When an earthquake occurs, the pendulum bearing uses the principle of a single pendulum to swing so that horizontal seismic waves cannot be transmitted upward to the beam body, or the seismic waves are attenuated and transmitted with a delayed delay to avoid resonance, which can effectively protect the foundation components and reduce damage to bridges and buildings. Pendulum bearings have gradually become the preferred product for bridge shock absorption and seismic isolation. Common pendulum bearings have consistent longitudinal and transverse shock absorption and seismic isolation performance requirements, and no differentiated design is made for the longitudinal and transverse performance, resulting in a large bearing volume. In actual application, due to the needs of the building itself and the operating conditions, there are different requirements for shock absorption and seismic isolation performance in the longitudinal and transverse directions. The bearings can be set with different isolation radii, isolation displacements and shear forces; such settings can reduce the volume of the bearings to a certain extent and control the manufacturing cost of the bearings.

[0003] The longitudinal and lateral performances of conventional pendulum bearings are the same. In actual application, the following disadvantages gradually emerge:

[0004] 1. Due to actual working conditions, some performance indicators of pendulum-type bearings should not be set to isotropic requirements. For example, the shearing device of the bearing must meet the requirement of shearing under a certain seismic force to achieve swinging to consume seismic energy; during an earthquake, the destructive force of seismic waves in different directions is different. If the same shearing force requirement is set in each direction, it will cause the bearing to fail to shear when it is needed, and the bearing will not be able to swing, which will affect the realization of the bearing's seismic isolation and shock absorption function.

[0005] 2. Actual working conditions require different requirements for shock-absorbing and seismic isolation performance in the longitudinal and lateral directions, but conventional pendulum bearings are not designed to distinguish between them. In order to ensure the safety reserve of the bearing, the performance in the direction with small requirements for seismic isolation displacement and isolation radius is usually aligned with that in the direction with large requirements. This results in the bearing having excess performance in one direction, causing an unnecessary increase in the shape of the bearing in this direction, which in turn increases the consumption of bearing materials and affects the bearing manufacturing cost.

[0006] 3. In order to meet the isotropic requirements, the conventional pendulum-type bearings have relatively large longitudinal and lateral shapes, which results in larger sizes of the upper or lower structures of the buildings associated with the bearings; it also increases the volume of the building and the construction consumables, directly affecting the project cost.

[0007] 4. The isotropic setting of the pendulum-type support results in a larger support volume, which increases the processing equipment capacity requirements and processing technology requirements; and in order to ensure sufficient construction accuracy, the building volume is increased, which increases the difficulty of construction.

[0008] 5. Conventional pendulum bearings do not have the force measurement function, and the selection is limited. Some projects that require force monitoring have to choose conventional force measuring basin rubber bearings or force measuring ball steel bearings; or additional force measuring devices need to be installed, which increases the overall cost of the project.

[0009] 6. Even if a force measuring element is installed on the new pendulum-type support, there are still some problems: the force measuring element is large in size; the force measuring device has a complex structure; the processing technology is difficult to implement; when the force measurement accuracy is inaccurate, the force measuring element cannot be repaired or replaced, and the only option is to replace the entire support with the top beam; these problems cause the overall project cost and maintenance cost to increase significantly, making it difficult to promote and apply.

[0010] There are more and more derivative products of pendulum bearings, but the research on pendulum bearings with different longitudinal and lateral seismic isolation performance is still lagging behind, and there is no set of selectable categories. In order to solve the lack of this technology, it is particularly urgent to develop a new type of pendulum bearing to meet the needs of the current market. Summary of the invention

[0011] In order to solve the above-mentioned problems existing in the existing longitudinal and transverse isotropic pendulum bearings, the object of the present invention is to provide a seismic isolation bridge bearing with multiple curved surfaces and anisotropic and heterogeneous properties.

[0012] The objective of the present invention is achieved through the following technical solutions:

[0013] The present invention comprises an upper support plate, an intermediate steel lining plate and a lower support plate, wherein the intermediate steel lining plate is located between the upper support plate and the lower support plate; an upper slide plate is arranged between the upper surface of the intermediate steel lining plate and the upper support plate, and a lower slide plate is arranged between the lower surface of the intermediate steel lining plate and the lower support plate, wherein the upper slide plate is a hyperbolic slide plate, i.e., both the upper and lower surfaces of the upper slide plate are curved surfaces, and the transverse curvature of the curved surfaces is different from the longitudinal curvature; the lower slide plate is a hyperbolic slide plate or a spherical slide plate, and when the lower slide plate is a hyperbolic slide plate, both the upper and lower surfaces of the lower slide plate are curved surfaces, and the transverse curvature of the curved surfaces is different from the longitudinal curvature; the lower slide plate is a hyperbolic slide plate or a spherical slide plate, and when the lower slide plate is a hyperbolic slide plate, both the upper and lower surfaces of the lower slide plate are It is a curved surface, and the lateral curvature of the curved surface is different from the longitudinal curvature; the lower surface of the upper support plate and the upper slide plate in sliding contact and the upper surface of the middle steel lining plate are both curved surfaces, and the lateral curvature of the curved surface is different from the longitudinal curvature; when the lower slide plate is a hyperbolic slide plate, the lower surface of the middle steel lining plate and the upper surface of the lower support plate and the lower slide plate in sliding contact are both curved surfaces, and the lateral curvature of the curved surface is different from the longitudinal curvature; when the lower slide plate is a spherical slide plate, the lower surface of the middle steel lining plate and the upper surface of the lower support plate and the lower slide plate in sliding contact are both spherical surfaces.

[0014] Wherein: a bottom basin is provided below the lower support plate, the upper surface of the bottom basin is concave downward along the thickness direction, the lower surface of the lower support plate is located in the concave, and a rubber plate is provided between the bottom surface of the concave; a force measuring assembly is provided on the bottom basin.

[0015] The force measuring assembly includes an oil chamber sealing plate, a pressure sensor and an oil circuit. A closed oil chamber is provided between the rubber plate and the recessed bottom surface. An oil chamber sealing plate is installed in the oil chamber. The oil chamber is sealed by the oil chamber sealing plate and the rubber plate. The oil circuit is opened on the bottom basin. One end of the oil circuit is connected to the oil chamber. A pressure sensor is installed at the other end of the oil circuit.

[0016] The bottom of the edge of the oil chamber sealing plate is fixedly connected to the bottom of the oil chamber, and the rest of the oil chamber sealing plate is separated from the bottom of the oil chamber except for the part fixedly connected to the bottom of the oil chamber.

[0017] The projections of the bottom basin, the rubber plate and the oil chamber sealing plate on the horizontal plane are all rectangular.

[0018] The edges of the upper surface and / or lower surface of the rubber plate are provided with sealing rings, and the rubber plate forms a seal with the bottom basin through the sealing rings.

[0019] When the lower slide plate is a hyperbolic slide plate, the longitudinal curvature of the lower surface of the upper support plate, the longitudinal curvature of the upper surface of the upper slide plate, the longitudinal curvature of the lower surface of the upper slide plate, the longitudinal curvature of the upper surface of the middle steel lining plate, the longitudinal curvature of the lower surface of the middle steel lining plate, and the longitudinal curvature of the upper surface of the lower support plate are the same; the lateral curvature of the lower surface of the upper support plate, the lateral curvature of the upper surface of the upper slide plate, the lateral curvature of the lower surface of the upper slide plate, the lateral curvature of the upper surface of the middle steel lining plate, the lateral curvature of the lower surface of the middle steel lining plate, and the lateral curvature of the upper surface of the lower support plate are the same.

[0020] The projections of the upper support plate, the upper slide plate, the middle steel lining plate, the lower slide plate and the lower support plate on the horizontal plane are all rectangular.

[0021] The advantages and positive effects of the present invention are:

[0022] 1. The present invention optimizes the original spherical structure into a curved surface structure with different curvature radii in the longitudinal and transverse directions. The differentiated design of the various directional performances enables the performance of the bridge bearing of the present invention to better meet the actual needs of the project. In particular, the shearing device of the bridge bearing can shear in different directions and under different shearing forces, so that the bridge bearing can more smoothly realize the shock absorption and isolation functions.

[0023] 2. The curved surface design with different curvature radii in the longitudinal and transverse directions of the present invention solves the problem of excess function in a certain direction caused by the isotropic setting of the support, which in turn causes the support to have a larger appearance, thereby reducing the manufacturing cost of the support.

[0024] 3. The curved surface design with different curvature radii in the longitudinal and transverse directions of the present invention solves the problem of large external shape of the associated structural structure of the upper and lower parts of the building caused by the isotropic setting of the supports. Through the anisotropic setting, the volume of the building can be effectively controlled and the project cost can be reduced.

[0025] 4. The curved surface design with different curvature radii in the longitudinal and transverse directions of the present invention solves the problems of difficult support manufacturing process and great difficulty in engineering construction caused by the isotropic setting of the support.

[0026] 5. The present invention is provided with a force measuring component, which has little impact on the volume of the support and is easy to process. It can realize calibration, maintenance or replacement under normal operating conditions, and effectively control the overall construction cost and maintenance cost of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A cross-sectional view of a longitudinal section of the present invention;

[0028] Figure 2 is a cross-sectional view of a transverse section of the present invention;

[0029] Figure 3 It is a schematic diagram of the three-dimensional structure of the upper support plate of the present invention;

[0030] Figure 4 It is a schematic diagram of the three-dimensional structure of the middle steel liner of the present invention;

[0031] Figure 5 It is a schematic diagram of the three-dimensional structure of the lower support plate of the present invention;

[0032] Figure 6 It is a schematic diagram of the three-dimensional structure of the hyperbolic skateboard of the present invention;

[0033] Figure 7 It is a schematic diagram of the three-dimensional structure of the force measuring assembly of the present invention;

[0034] Among them: 1 is the upper support plate, 2 is the upper slide plate, 3 is the middle steel lining plate, 4 is the lower slide plate, 5 is the lower support plate, 6 is the rubber plate, 7 is the oil chamber sealing plate, 8 is the bottom basin, 9 is the pressure sensor, and 10 is the oil circuit. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings.

[0036] like Figures 1 to 7As shown, the present invention comprises an upper support plate 1, an intermediate steel lining plate 3 and a lower support plate 5, wherein the intermediate steel lining plate 3 is located between the upper support plate 1 and the lower support plate 5; an upper slide plate 2 is provided between the upper surface of the intermediate steel lining plate 3 and the upper support plate 1, and a lower slide plate 4 is provided between the lower surface of the intermediate steel lining plate 3 and the lower support plate 5, wherein the upper slide plate 2 is a hyperbolic slide plate, i.e., both the upper and lower surfaces of the upper slide plate 2 are curved surfaces, and the transverse curvature of the curved surface is different from the longitudinal curvature; the lower slide plate 4 is a hyperbolic slide plate or a spherical slide plate, and when the lower slide plate 4 is a hyperbolic slide plate, the upper and lower surfaces of the lower slide plate 4 .... The surfaces are all curved surfaces, and the lateral curvature of the curved surfaces is different from the longitudinal curvature; the lower surface of the upper support plate 1 and the upper slide plate 2 in sliding contact and the upper surface of the middle steel lining plate 3 are all curved surfaces, and the lateral curvature of the curved surfaces is different from the longitudinal curvature; when the lower slide plate 4 is a hyperbolic slide plate, the lower surface of the middle steel lining plate 3 and the upper surface of the lower support plate 5 and the lower slide plate 4 in sliding contact are both curved surfaces, and the lateral curvature of the curved surfaces is different from the longitudinal curvature; when the lower slide plate 4 is a spherical slide plate, the lower surface of the middle steel lining plate 3 and the upper surface of the lower support plate 5 and the lower slide plate 4 in sliding contact are both spherical surfaces.

[0037] The projections of the upper support plate 1, the upper slide plate 2, the middle steel lining plate 3, the lower slide plate 4 and the lower support plate 5 of the present embodiment on the horizontal plane are all rectangles, with the length direction of the rectangle being the longitudinal direction and the width direction being the transverse direction.

[0038] The lower slide plate 4 of the present embodiment is a hyperbolic slide plate, and the longitudinal curvature of the lower surface of the upper support plate 1, the longitudinal curvature of the upper surface of the upper slide plate 2, the longitudinal curvature of the lower surface of the upper slide plate 2, the longitudinal curvature of the upper surface of the middle steel lining plate 3, the longitudinal curvature of the lower surface of the middle steel lining plate 3, the longitudinal curvature of the upper surface of the lower slide plate 4, the longitudinal curvature of the lower surface of the lower slide plate 4 and the longitudinal curvature of the upper surface of the lower support plate 5 are the same; the lateral curvature of the lower surface of the upper support plate 1, the lateral curvature of the upper surface of the upper slide plate 2, the lateral curvature of the lower surface of the upper slide plate 2, the lateral curvature of the upper surface of the middle steel lining plate 3, the lateral curvature of the lower surface of the middle steel lining plate 3, the lateral curvature of the upper surface of the lower slide plate 4, the lateral curvature of the lower surface of the lower slide plate 4 and the lateral curvature of the upper surface of the lower support plate 5 are the same.

[0039] In this embodiment, a bottom basin 8 is provided below the lower support plate 5. The upper surface of the bottom basin 8 is concave downward in the thickness direction. The lower surface of the lower support plate 5 is located in the concave, and a rubber plate 6 for sealing is provided between the lower surface of the concave. The edges of the upper surface and / or lower surface of the rubber plate 6 (in this embodiment, the edges of the upper surface and lower surface of the rubber plate 6) are provided with sealing rings, and the rubber plate 6 forms a seal with the bottom basin 8 through the sealing rings.

[0040] The bottom basin 8 of this embodiment is provided with a force measuring assembly, which includes an oil chamber sealing plate 7, a pressure sensor 9 and an oil circuit 10. A closed oil chamber is provided between the rubber plate 6 and the bottom surface of the depression, and an oil chamber sealing plate 7 is installed in the oil chamber. The oil chamber is sealed by the oil chamber sealing plate 7 and the rubber plate 6. The bottom of the edge of the oil chamber sealing plate 7 of this embodiment is fixedly connected to the bottom of the oil chamber, and the rest of the oil chamber sealing plate 7 is separated from the bottom of the oil chamber except for the part fixedly connected to the bottom of the oil chamber. The oil circuit 10 is opened on the bottom basin 8, one end of the oil circuit 10 is connected to the oil chamber, and silicone oil is injected into the oil chamber through the oil circuit 10. The other end of the oil circuit 10 is installed with a pressure sensor 9 after the silicone oil is injected.

[0041] The projections of the bottom basin 8, the rubber plate 6 and the oil chamber sealing plate 7 of the present embodiment on the horizontal plane are all rectangular.

[0042] Based on the existing double sliding surface pendulum structure, the present invention optimizes the original spherical surface structure into a curved surface structure with different curvature radii in the longitudinal and transverse directions, so that the anisotropic and heterogeneous functions can be realized, and the original upper, middle and lower three sliding surface structure is optimized into an upper and lower double sliding surface structure, and the parts are more compact. The conventional spherical crown liner is upgraded and optimized to an upper and lower hyperbolic middle steel liner 3 with different curvature radii in the longitudinal and transverse directions, or the middle steel liner 3 is designed as an upper curved surface + a lower spherical surface; the curvature setting of the upper slide plate 2 and the lower slide plate 4 matches the middle steel liner 3, and the longitudinal and transverse curvature radii of the upper slide plate 2 and the lower slide plate 4 are also different; the curvature of the matching upper support plate 1 and the lower support plate 5 curved surface is also differentiated in the longitudinal and transverse directions; such a structural setting enables the pendulum-type support to achieve different seismic isolation performance index requirements in the longitudinal and transverse directions. The anisotropy of the anisotropic pendulum bearing mainly refers to the different directions of the bearing's seismic isolation performance. The bearing's seismic isolation performance includes seismic isolation period, seismic isolation displacement, shear force, and friction coefficient. Some anisotropic pendulum bearings can only achieve differentiation of one performance parameter, namely, seismic isolation displacement in different directions, and differentiation of the remaining three performance parameters cannot be achieved. The present invention solves the above problem and can simultaneously achieve differentiated design of the above four performance indicators in each direction, which can better meet the needs of actual construction conditions. For common anisotropic pendulum bearings, the anisotropic function requires a combination of three sliding surfaces, namely, upper, middle, and lower, to be realized. The present invention can be realized only through upper and lower double sliding surfaces, and the structure is more compact, which promotes stable function realization. The middle steel liner 3 is provided with different radii of curvature in the longitudinal and transverse directions, and the anisotropic seismic isolation function can be realized through the combined rotation of the upper and lower double sliding surfaces.

[0043] The present invention arranges a rubber plate 6 between the lower bearing plate 5 and the bottom basin 8 of the bridge bearing, and a closed oil chamber is arranged between the rubber plate 6 and the concave bottom surface of the bottom basin 8, and an oil chamber sealing plate 7 is arranged on the upper part of the oil chamber, and the oil chamber sealing is realized by the oil chamber sealing plate 7 and the rubber plate 6; an oil circuit 10 and an interface are arranged on the bottom basin 8, which can be connected to an external pressure sensor 9 for force measurement; when the rubber plate 6 is subjected to a certain pressure, the pressure borne by the sealed silicone oil is transmitted to the pressure sensor 9, and the pressure sensor 9 converts the received pressure into an electrical signal and sends it out, thereby realizing the force measurement function of the bridge bearing.

[0044] The present invention fills many technical gaps in the industry to solve related problems caused by a non-compact structure, solve the problem of difficult processing technology caused by a complex structure, and solve the problem of large bearing volume, so as to meet the needs of actual working conditions and effectively control the manufacturing cost of the bearing, and improve the durability of the bearing and the building; to a certain extent, it enhances the competitiveness of the product itself and promotes better promotion and application of the product.

Claims

1. A seismic isolation bridge bearing with multiple curved surfaces and anisotropic and anisotropic performance, comprising an upper bearing plate (1), an intermediate steel lining plate (3) and a lower bearing plate (5), wherein the intermediate steel lining plate (3) is located between the upper bearing plate (1) and the lower bearing plate (5); characterized in that: An upper slide plate (2) is provided between the upper surface of the middle steel lining plate (3) and the upper support plate (1), and a lower slide plate (4) is provided between the lower surface of the middle steel lining plate (3) and the lower support plate (5). The upper slide plate (2) is a hyperbolic slide plate, that is, the upper and lower surfaces of the upper slide plate (2) are both curved surfaces, and the lateral curvature of the curved surface is different from the longitudinal curvature; the lower slide plate (4) is a hyperbolic slide plate or a spherical slide plate. When the lower slide plate (4) is a hyperbolic slide plate, the upper and lower surfaces of the lower slide plate (4) are both curved surfaces, and the lateral curvature of the curved surface is different from the longitudinal curvature; The lower surface of the upper support plate (1) and the upper slide plate (2) in sliding contact and the upper surface of the middle steel lining plate (3) are both curved surfaces, and the lateral curvature of the curved surface is different from the longitudinal curvature; when the lower slide plate (4) is a hyperbolic slide plate, the lower surface of the middle steel lining plate (3) and the upper surface of the lower support plate (5) and the lower slide plate (4) in sliding contact are both curved surfaces, and the lateral curvature of the curved surface is different from the longitudinal curvature; when the lower slide plate (4) is a spherical slide plate, the lower surface of the middle steel lining plate (3) and the upper surface of the lower support plate (5) and the lower slide plate (4) in sliding contact are both spherical surfaces.

2. The seismic isolation bridge bearing with multiple curved surfaces and anisotropic and anisotropic performance according to claim 1 is characterized by: A bottom basin (8) is provided below the lower support plate (5), the upper surface of the bottom basin (8) is recessed downward in the thickness direction, the lower surface of the lower support plate (5) is located in the recess, and a rubber plate (6) is provided between the bottom surface of the recess; a force measuring assembly is provided on the bottom basin (8).

3. The seismic isolation bridge bearing with multiple curved surfaces and anisotropic and anisotropic performance according to claim 2 is characterized by: The force measuring assembly comprises an oil chamber sealing plate (7), a pressure sensor (9) and an oil circuit (10); a closed oil chamber is provided between the rubber plate (6) and the bottom surface of the depression; an oil chamber sealing plate (7) is installed in the oil chamber; the oil chamber is sealed by the oil chamber sealing plate (7) and the rubber plate (6); the oil circuit (10) is opened on the bottom basin (8); one end of the oil circuit (10) is connected to the oil chamber; and the other end of the oil circuit (10) is installed with a pressure sensor (9).

4. The seismic isolation bridge bearing with multiple curved surfaces combined with anisotropic and anisotropic properties according to claim 3 is characterized by: The bottom of the edge of the oil chamber sealing plate (7) is fixedly connected to the bottom of the oil chamber, and the rest of the oil chamber sealing plate (7) is separated from the bottom of the oil chamber except for the part fixedly connected to the bottom of the oil chamber.

5. The seismic isolation bridge bearing with multiple curved surfaces combined with anisotropic and anisotropic properties according to claim 3 is characterized by: The projections of the bottom basin (8), the rubber plate (6) and the oil chamber sealing plate (7) on the horizontal plane are all rectangular.

6. The seismic isolation bridge bearing with multiple curved surfaces and anisotropic and anisotropic performance according to claim 2 is characterized by: The edges of the upper surface and / or lower surface of the rubber plate (6) are provided with sealing rings, and the rubber plate (6) forms a seal with the bottom basin (8) via the sealing rings.

7. The seismic isolation bridge bearing with multiple curved surfaces and anisotropic and anisotropic performance according to claim 1 is characterized by: When the lower slide plate (4) is a hyperbolic slide plate, the longitudinal curvature of the lower surface of the upper support plate (1), the longitudinal curvature of the upper surface of the upper slide plate (2), the longitudinal curvature of the lower surface of the upper slide plate (2), the longitudinal curvature of the upper surface of the middle steel lining plate (3), the longitudinal curvature of the lower surface of the middle steel lining plate (3) and the longitudinal curvature of the upper surface of the lower support plate (5) are the same; the transverse curvature of the lower surface of the upper support plate (1), the transverse curvature of the upper surface of the upper slide plate (2), the transverse curvature of the lower surface of the upper slide plate (2), the transverse curvature of the upper surface of the middle steel lining plate (3), the transverse curvature of the lower surface of the middle steel lining plate (3) and the transverse curvature of the upper surface of the lower support plate (5) are the same.

8. The multi-curved surface combined anisotropic and anisotropic seismic isolation bridge bearing according to claim 1, characterized in that: The projections of the upper support plate (1), the upper slide plate (2), the middle steel lining plate (3), the lower slide plate (4) and the lower support plate (5) on the horizontal plane are all rectangular.

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