Grooved and snap-fit ​​wind-resistant and seismic-isolation bearings

Abstract

The present invention relates to a groove-bite-type wind-resistant and seismic isolation bearing, comprising a rubber seismic isolation bearing arranged on a seismic isolation layer, wherein the upper and lower surfaces thereof are respectively provided with an upper end plate and a lower end plate for connecting the upper and lower structures of the seismic isolation layer; and a groove-bite-type wind-resistant stiffness adjuster arranged between the upper and lower end plates, comprising a horizontal sliding meshing plate, a reaction anchor plate, a horizontal pull rod, a groove-bite-type plate, a directional disc spring assembly and auxiliary accessories. The horizontal pull rod passes through the reaction anchor plate and is hinged to the groove-bite-type plate. The lower surface of the end of the groove-bite-type plate is processed with a groove that can be pressed into the top of the directional disc spring assembly, and the end of the groove-bite-type plate fits and hooks the horizontal sliding meshing plate. Compared with the prior art, the present invention improves the horizontal stiffness of the seismic isolation layer while also ensuring the seismic isolation effect, can automatically realize stiffness conversion, no parts are damaged during the whole process, and the performance is reliable; the horizontal stiffness value can be adjusted over a wide range, and can be adapted to various "wind vibration + earthquake" collaborative control scenarios.

Description

Technical Field

[0001] The invention relates to the technical field of wind-resistant and earthquake-isolating building structures, in particular to a groove-engaged wind-resistant and earthquake-isolating bearing. Background Art

[0002] As base isolation technology matures, it is increasingly used in new building structures, aiming to significantly reduce the equivalent seismic action of the upper structure, reduce the cost of the structure (under the design scenario of seismic action control), and improve the seismic safety of structures and non-structural components. The currently commonly used rubber isolation bearings have a low horizontal stiffness to improve the isolation effect, but the low horizontal stiffness of the isolation layer can easily lead to excessive reaction of the upper structure under wind load, resulting in comfort problems.

[0003] Adding lead cores to ordinary rubber isolation bearings can increase the horizontal (elastic) stiffness of the isolation layer, which is beneficial for resisting excessive wind-induced response of the upper structure and improving the wind vibration comfort of the structure. However, the increase in the horizontal (elastic) stiffness of the isolation layer will inevitably lead to a weakening of the isolation effect of the isolation layer against horizontal earthquakes, thereby reducing the isolation effect of the structure. At the same time, the yielding of the lead core rubber bearings in the isolation layer under moderate and large earthquakes will cause residual deformation in the isolation layer at the base of the structure that is difficult to recover, which is not conducive to maintaining the continuity of the building's use function and reduces the seismic toughness of the building structure.

[0004] In order to coordinate the "low horizontal stiffness" required for seismic isolation and the "high horizontal stiffness" required for wind resistance, existing measures are to add wind-resistant components to the base seismic isolation layer using rubber seismic isolation bearings. Such components are designed to provide additional horizontal stiffness for the seismic isolation layer under wind vibration, and to stop working under medium and large earthquakes, so as to ensure that the flexibility of the seismic isolation layer is not affected and achieve an ideal seismic isolation effect. However, there are three major problems with the wind-resistant components of the current seismic isolation layer: 1. In order to achieve the transformation from "stiffness in wind resistance state" to "no stiffness in seismic isolation state", additional active or semi-active control devices need to be set up, which is too expensive; 2. Additional wind-resistant devices often achieve stiffness degradation at the cost of yield damage of internal components, so after medium and large earthquakes, damaged components need to be replaced; 3. The stiffness of the additional wind-resistant device is difficult to control, and it is not easy to achieve its matching use with rubber seismic isolation bearings. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a groove-engaged wind-resistant and seismic isolation bearing.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] The technical solution of the present invention is to provide a groove-engaged wind-resistant and seismic-isolating bearing, comprising:

[0008] A rubber seismic isolation support provided between the upper structure and the lower structure of the seismic isolation layer, wherein the upper surface and the lower surface of the rubber seismic isolation support are respectively provided with an upper end plate and a lower end plate for connecting the upper structure and the lower structure of the seismic isolation layer;

[0009] And a plurality of groups of groove-bite type wind-resistant stiffness adjusters are arranged between the upper end plate and the lower end plate and around the rubber seismic isolation bearing, which include a horizontal sliding meshing plate fixed on the upper end plate, a reaction anchor plate fixed on the lower end plate, a horizontal pull rod, a groove-bite plate and a directional disc spring assembly, one end of the horizontal pull rod is provided with a first limiting bolt, and the other end passes through the reaction anchor plate and is hinged to the groove-bite plate, the directional disc spring assembly is fixedly mounted on the lower end plate, the lower surface of the end of the groove-bite plate is processed with a groove that can be pressed into the top of the directional disc spring assembly, and the end of the groove-bite plate fits and hooks the horizontal sliding meshing plate.

[0010] Among them, rubber seismic isolation bearings are conventional commercially available products, such as rubber bearings for building seismic isolation.

[0011] Furthermore, the directional disc spring assembly includes a screw base fixed on the lower end plate, and an upper gasket, a disc spring group, a lower gasket and an adjusting bolt which are arranged on the screw base in sequence from top to bottom.

[0012] Furthermore, the screw base is a T-shaped structure, including a base fixed on the lower end plate and a screw that is integral with the base and perpendicular to the base, and the screw is provided with the upper gasket, disc spring assembly, lower gasket and adjusting bolt.

[0013] Furthermore, the sum of the heights of the upper gasket, disc spring assembly, lower gasket and adjusting bolt is lower than the height of the screw rod, so that the top of the screw rod is stuck in the groove of the groove bite plate.

[0014] Furthermore, the horizontal sliding bite plate is an L-shaped structure, including a cross bar and a first protrusion integrally connected to the end of the cross bar, and one end of the groove of the groove bite plate is also provided with a second protrusion that fits and hooks with the first protrusion.

[0015] Furthermore, when the first protrusion and the second protrusion are fitted and hooked, the interface of the fitting and hooking is an inclined slope.

[0016] Furthermore, one end surface of the horizontal pull rod is provided with an external thread for fastening the first limiting bolt.

[0017] Furthermore, the reaction force anchor plate is provided with a plurality of holes for the horizontal pull rod to pass through, and the hole diameter is larger than the diameter of the horizontal pull rod.

[0018] Furthermore, the horizontal pull rod and the groove bite plate are hinged via a steel connecting rod, and second limiting bolts are provided at both ends of the steel connecting rod.

[0019] Furthermore, an upper connecting plate is fixed between the rubber seismic isolation support and the upper end plate, and a lower connecting plate is fixed between the rubber seismic isolation support and the lower end plate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] (1) The present invention utilizes a groove-engaging wind-resistant stiffness adjuster to allow the groove-engaging plate to fit and hook with the horizontal sliding plate and to squeeze and fit with the directional disc spring assembly, thereby providing the present invention with horizontal stiffness capable of resisting the action of horizontal shear wind loads and effectively solving the problem of wind-resistant comfort in seismic isolation structures.

[0022] (2) When the present invention is subjected to a certain earthquake, the groove bite plate and the horizontal pull rod rotate and bend from a horizontal state, and the disc spring group is squeezed to change the contact state between the groove bite plate and the horizontal sliding bite plate, and between the groove bite plate and the directional disc spring assembly. The groove bite plate is out of contact with the horizontal sliding bite plate and the directional disc spring assembly, and loses its horizontal stiffness. Therefore, the groove bite type wind-resistant stiffness adjuster stops working, allowing the rubber seismic isolation bearing to play a seismic isolation role. Moreover, the initial stiffness of the groove bite type wind-resistant stiffness adjuster does not affect the horizontal seismic isolation effect of the rubber seismic isolation bearing.

[0023] (3) All parts in the groove-engaging wind-resistant stiffness regulator of the present invention will not be plastically damaged due to the change of working state, so there is no need to replace them frequently, and the groove-engaging wind-resistant stiffness regulator has a reset function. Therefore, after the earthquake, the pressure of the disc spring group is released by simply twisting the adjustment bolt, the groove-engaging plate is moved to re-engage with the horizontal sliding plate and the directional disc spring assembly, and finally the adjustment bolt is tightened, so that the working state of the groove-engaging wind-resistant stiffness regulator is quickly restored.

[0024] (4) The groove-interlocking wind-resistant stiffness adjuster in the present invention can be directly used in conjunction with the existing standardized seismic isolation bearings without affecting the calculation and design of the seismic isolation bearings under moderate and large earthquakes; and key design indicators such as the initial additional stiffness value of the groove-interlocking wind-resistant stiffness adjuster and the shear displacement value corresponding to the stiffness conversion can be adjusted within a wide range, which is suitable for various "wind-vibration + earthquake" collaborative control scenarios.

[0025] (5) All parts of the present invention are traditional steel structures, and only individual positions require simple mechanical processing such as grooved bite plates and horizontal sliding bite plates. The cost is controllable, and the parts will not suffer plastic damage due to changes in working conditions.

[0026] (6) The present invention realizes stiffness conversion in different stress stages in a passive manner, and the force transmission path of the whole process of "wind-resistant locking-seismic isolation unlocking-wind-resistant locking" mechanism is clear; the present invention has simple structure, simple installation, reliable performance, and broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic front view of the structure of the present invention.

[0028] Figure 2 It is a schematic diagram of the disengaged state of the structure of the present invention.

[0029] Figure 3 It is a 3D schematic diagram of the present invention.

[0030] Figure 4 It is a schematic top view of the structure of the present invention.

[0031] Figure 5 It is a structural schematic diagram of the lower end plate in the present invention.

[0032] Figure 6 It is a schematic diagram of the structural details of the directional disc spring assembly in the present invention.

[0033] Figure 7 It is a schematic front view of the structure of the compression groove bite plate of the present invention.

[0034] Figure 8 It is a schematic structural axonometric diagram of the compression groove bite plate of the present invention.

[0035] Fig. 9 It is a schematic front view of the structure of the horizontal pull rod in the present invention.

[0036] Fig.10 It is a schematic structural axonometric diagram of the horizontal pull rod in the present invention.

[0037] Fig.11 It is a schematic front view of the structure of the reaction force anchor plate in the present invention.

[0038] Fig.12 It is a schematic top view of the structure of the reaction force anchor plate in the present invention.

[0039] Fig.13 It is a schematic structural axonometric diagram of the reaction anchor plate in the present invention.

[0040] The following are marked in the figure:

[0041] 1 is the upper end plate; 2 is the lower end plate; 3 is the horizontal sliding meshing plate; 4 is the rubber seismic isolation bearing; 5 is the reaction anchor plate; 6 is the horizontal pull rod; 7 is the steel connecting rod; 8 is the grooved meshing plate; 9 is the directional disc spring assembly; 9-1 is the screw base; 9-2 is the adjusting bolt; 9-3 is the lower gasket; 9-4 is the disc spring group; 9-5 is the upper gasket; 10 is the upper connecting plate; 11 is the lower connecting plate; 12-1 is the first limit bolt; 12-2 is the second limit bolt. DETAILED DESCRIPTION

[0042] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] In the following embodiments, unless otherwise specified, functional components or structures are conventional components or conventional structures used in the art to achieve corresponding functions.

[0044] Embodiment 1:

[0045] like Figure 1-13 As shown, it is a groove-engaged wind-resistant and seismic isolation support, comprising: a rubber seismic isolation support 4 arranged between the upper structure and the lower structure of the seismic isolation layer, the upper surface and the lower surface of which are respectively provided with an upper end plate 1 and a lower end plate 2 for connecting the upper structure and the lower structure of the seismic isolation layer; and four groups of groove-engaged wind-resistant stiffness adjusters arranged between the upper end plate 1 and the lower end plate 2 and around the rubber seismic isolation support 4, which include a horizontal sliding meshing plate 3 fixed on the upper end plate 1 by bolts, The reaction anchor plate 5, horizontal tie rod 6, groove bite plate 8 and directional disc spring assembly 9 are bolted to the lower end plate 2. One end of the horizontal tie rod 6 is provided with a first limit bolt 12-1, and the other end passes through the reaction anchor plate 5 and is hinged to the groove bite plate 8. The directional disc spring assembly 9 is fixed to the lower end plate 2 by bolts. The lower surface of the end of the groove bite plate 8 is also processed with a groove that can be pressed into the top of the directional disc spring assembly 9. The end of the groove bite plate 8 fits and hooks the horizontal sliding bite plate 3. An upper connecting plate 10 is also fixed between the rubber isolation bearing 4 and the upper end plate 1, and a lower connecting plate 11 is also fixed between the rubber isolation bearing 4 and the lower end plate 2. The rubber isolation bearing 4, the upper end plate 1 and the upper connecting plate 10 are fixed by bolts, and the rubber isolation bearing 4, the lower end plate 2 and the lower connecting plate 11 are also fixed by bolts.

[0046] like Figure 6 The directional disc spring assembly 9 shown includes a screw base 9-1 fixed to the lower end plate 2 by an anchor bolt, which is a T-shaped structure, including a base and a screw that is integral with the base and perpendicular to the base, and an upper gasket 9-5, a disc spring assembly 9-4, a lower gasket 9-3 and an adjusting bolt 9-2 arranged on the screw from top to bottom. The total height of the upper gasket 9-5, the disc spring assembly 9-4, the lower gasket 9-3 and the adjusting bolt 9-2 on the screw is lower than the height of the screw, so that the top of the screw is stuck with the pressure groove of the pressure groove bite plate 8.

[0047] The horizontal sliding meshing plate 3 is an L-shaped structure, including a cross bar and a first protrusion connected to the end of the cross bar. Figures 7-8 The grooved end of the grooved bite plate 8 shown is also provided with a second protrusion that fits and hooks with the first protrusion. When the first protrusion fits and hooks with the second protrusion, the interface of the fit and hook is an inclined slope. The other end of the grooved bite plate 8 is provided with an interface hinged with four horizontal pull rods 6. The horizontal pull rod 6 is hinged with the grooved bite plate 8 through a steel connecting rod 7, and the two ends of the steel connecting rod 7 are also provided with a second limit bolt 12-2.

[0048] like Figures 9-10 One end surface of the horizontal pull rod 6 is provided with an external thread for fastening the first limit bolt 12-1. Figures 11 to 13 The reaction anchor plate 5 shown is provided with four holes for the horizontal tie rods 6 to pass through, and the diameter of the holes is larger than the diameter of the horizontal tie rods 6 .

[0049] The working principle of the present invention is:

[0050] The present invention uses a groove-engaging wind-resistant stiffness regulator to make the groove-engaging plate 8 fit and hook with the horizontal sliding meshing plate 3 and clamp with the directional disc spring assembly 9, so as to provide the seismic isolation layer with horizontal stiffness that can resist the horizontal shear wind load. Under the action of a certain earthquake, the groove-engaging plate 8 and the horizontal pull rod 6 are rotated and bent from the horizontal state, and the disc spring assembly 9-4 is squeezed to change the fitting contact state between the groove-engaging plate 8 and the horizontal sliding meshing plate 3, and between the groove-engaging plate 8 and the directional disc spring assembly 9. The groove-engaging plate 8 is out of contact with the horizontal sliding meshing plate 3 and the directional disc spring assembly 9, and loses its horizontal stiffness. Therefore, the groove-engaging wind-resistant stiffness regulator stops working, so that the rubber seismic isolation bearing 4 plays a seismic isolation role. After the earthquake, the pressure of the disc spring group 9-4 is released by simply turning the adjusting bolt 9-2, and the groove bite plate 8 is moved to make it fit and hook with the horizontal sliding meshing plate 3 and the directional disc spring assembly 9 again. Finally, the adjusting bolt 9-2 is tightened to quickly restore the working state of the groove bite type wind resistance stiffness adjuster.

[0051] The installation of the present invention comprises the following steps:

[0052] (1) First, the upper end plate 1 is fixed to the upper structure of the seismic isolation layer by bolts, and the lower end plate 2 is fixed to the lower structure of the seismic isolation layer. The upper connecting plate 10 is fixed to the upper surface of the rubber seismic isolation support 4, and the lower connecting plate 11 is fixed to the lower surface. The upper connecting plate 10 and the lower connecting plate 11 of the rubber seismic isolation support 4 are respectively fixed by bolts between the upper end plate 1 and the lower end plate 2. The horizontal sliding meshing plate 3 is fixed to the upper end plate 1 by bolts, and the reaction anchor plate 5 and the screw base 9-1 are fixed to the lower end plate 2 by bolts.

[0053] (2) Install the adjusting bolt 9-2 on the screw base 9-1, and insert the lower gasket 9-3, disc spring assembly 9-4 and upper gasket 9-5 in sequence from bottom to top.

[0054] (3) The threaded end of the horizontal tie rod 6 is connected through the reaction anchor plate 5 and fastened by the first limit bolt 12-1, and the other end is connected to the groove bite plate 8 through the steel connecting rod 7. The two ends of the steel connecting rod 7 are also provided with second limit bolts 12-2. The other end of the groove bite plate 8 is provided with a groove on the lower surface, which is aligned with the top of the screw of the screw base 9-1 in the directional disc spring assembly 9.

[0055] (4) Turn the stiffness adjustment bolt 9-2 to adjust the disc spring assembly 9-4, so that the horizontal pull rod 6 and the groove bite plate 8 are in a horizontal state, and the second protrusion at the end of the groove bite plate 8 is fitted and hooked with the first protrusion of the horizontal sliding meshing plate 3. At the same time, the groove at the end of the groove bite plate 8 is clamped with the screw of the screw base 9-1, and the installation is completed.

[0056] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. The groove-engaging wind-resistant and seismic-isolating bearing is characterized by: include: A rubber seismic isolation support (4) is provided between the upper structure and the lower structure of the seismic isolation layer, and the upper surface and the lower surface of the rubber seismic isolation support are respectively provided with an upper end plate (1) and a lower end plate (2) for connecting the upper structure and the lower structure of the seismic isolation layer; and a plurality of groups of groove-bite-type wind-resistant stiffness adjusters arranged between the upper end plate (1) and the lower end plate (2) and around the rubber seismic isolation support (4), comprising a horizontal sliding meshing plate (3) fixed on the upper end plate (1), a reaction anchor plate (5) fixed on the lower end plate (2), a horizontal pull rod (6), a groove-bite-type wind-resistant stiffness adjuster, and a directional disc spring assembly (9). One end of the horizontal pull rod (6) is provided with a first limiting bolt (12-1), and the other end passes through the reaction anchor plate (5) and is hinged to the groove-bite-type wind-resistant stiffness adjuster. The directional disc spring assembly (9) is fixedly mounted on the lower end plate (2). The lower surface of the end of the groove-bite-type wind-resistant stiffness adjuster (8) is also processed with a groove that can be pressed into the top of the directional disc spring assembly (9). The end of the groove-bite-type wind-resistant stiffness adjuster (8) fits and hooks the horizontal sliding meshing plate (3). The directional disc spring assembly (9) comprises a screw base (9-1) fixed on the lower end plate (2), and an upper gasket (9-5), a disc spring assembly (9-4), a lower gasket (9-3) and an adjusting bolt (9-2) arranged on the screw base (9-1) in sequence from top to bottom; The screw base (9-1) is a T-shaped structure, comprising a base fixed on the lower end plate (2) and a screw that is integral with the base and perpendicular to the base, and the screw is provided with the upper gasket (9-5), the disc spring assembly (9-4), the lower gasket (9-3) and the adjusting bolt (9-2); The total height of the upper gasket (9-5), the disc spring assembly (9-4), the lower gasket (9-3) and the adjusting bolt (9-2) is lower than the height of the screw rod, so that the top of the screw rod is stuck in the groove of the groove bite plate (8).

2. The groove-engaging wind-resistant and seismic-isolating bearing according to claim 1 is characterized in that: The horizontal sliding meshing plate (3) is an L-shaped structure, comprising a crossbar and a first protrusion integrally connected to the end of the crossbar, and a second protrusion that fits and hooks with the first protrusion is also provided at one end of the groove of the groove bite plate (8).

3. The groove-engaging wind-resistant and seismic-isolating bearing according to claim 2 is characterized in that: When the first protrusion and the second protrusion are fitted and hooked, the interface of the fitting and hooking is an inclined slope.

4. The groove-engaging wind-resistant and seismic-isolating bearing according to claim 1 is characterized in that: One end surface of the horizontal pull rod (6) is provided with an external thread for fastening the first limiting bolt (12-1).

5. The groove-engaging wind-resistant and seismic-isolating bearing according to claim 1 is characterized in that: The reaction force anchor plate (5) is provided with a plurality of holes for the horizontal pull rod (6) to pass through, and the hole diameter is larger than the diameter of the horizontal pull rod (6).

6. The groove-engaging wind-resistant and seismic-isolating bearing according to claim 1 is characterized in that: The horizontal pull rod (6) and the groove-pressing bite plate (8) are hingedly connected via a steel connecting rod (7), and second limiting bolts (12-2) are provided at both ends of the steel connecting rod (7).

7. The groove-engaging wind-resistant and seismic-isolating bearing according to claim 1 is characterized in that: An upper connecting plate (10) is also fixed between the rubber shock-isolating support (4) and the upper end plate (1), and a lower connecting plate (11) is also fixed between the rubber shock-isolating support (4) and the lower end plate (2).

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