Wind-resistant and seismic-isolation bearing combined with claw-type force limiter

Abstract

The present invention relates to a wind-resistant seismic isolation bearing combined with a claw-type force limiter, comprising: a rubber seismic isolation bearing arranged on a seismic isolation layer; and a claw-type force limiting assembly arranged around the rubber seismic isolation bearing, which comprises a floating anchor plate, a ground anchor plate, a strip-shaped clamping tooth, a horizontal pull rod, and a claw-type force limiter connecting the floating anchor plate and the ground anchor plate; the claw-type force limiter comprises an upper clamp plate, an upper support plate, an upper rear hinge plate, a lower rear hinge plate, a lower support plate, a lower clamp plate, and a disc spring group, the strip-shaped clamping tooth is clamped into the claw-type notch formed by the upper clamp plate and the lower clamp plate, the strip-shaped clamping tooth is hinged to the ground anchor plate, and the hinge of the upper rear hinge plate and the lower rear hinge plate is also hinged to a horizontal pull rod connected to the floating anchor 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, the state transition process of the claw-type force limiter is stable and reliable, the error adjustment capability is strong, and the construction is convenient, the cost is low, and it can be restored after the earthquake.

Description

Technical Field

[0001] The invention relates to the technical field of wind-resistant and earthquake-isolated building structures, in particular to a wind-resistant and earthquake-isolated support combined with a claw-type force limiter. Background Art

[0002] In order to reduce the equivalent earthquake effect on building structures, the application of seismic isolation technology is becoming more and more widespread. Although seismic isolation technology can effectively protect the structural safety of buildings under earthquakes, excessive flexibility of the seismic isolation layer often leads to comfort problems in the upper structure under large wind vibration. For this reason, additional wind-resistant devices are installed on the seismic isolation layer to increase the horizontal stiffness of the seismic isolation layer under wind vibration, which has become a practical need for high-rise building structures using base isolation.

[0003] The wind resistance requirements of the base isolation structure are quite special: first, the wind resistance device is required to provide effective additional stiffness under the action of wind vibration to reduce the wind vibration response of the upper structure; second, the wind resistance device is required to stop working under the action of earthquake to ensure that the flexibility of the isolation layer is not affected. Although the existing technology has provided some solutions, there are various problems: 1. In order to realize the transformation of the wind resistance device from the "wind resistance state with stiffness" state to the "isolation state without stiffness" state, it is necessary to set up an additional active or semi-active control device, which is too expensive; 2. The additional wind resistance device often achieves the degradation of passive horizontal stiffness at the cost of plastic damage to internal parts, so after medium and large earthquakes, the damaged parts need to be replaced; 3. The stiffness of the additional wind resistance device is difficult to control, and the adjustment range of key design indicators such as the initial additional stiffness value and the shear displacement value corresponding to the stiffness conversion is narrow, and it is not easy to realize its matching use with the rubber isolation bearing; 4. The additional wind resistance device does not have a large installation error adjustment capability, and requires a high positioning accuracy during structural installation, which is difficult to construct, so it is difficult to restore the working state after the earthquake. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a wind-resistant and seismic-isolating support combined with a claw-type force limiter.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] The technical solution of the present invention is to provide a wind-resistant and seismic-isolating support combined with a claw-type force limiter, comprising:

[0007] A rubber seismic isolation bearing provided between the upper structure and the lower structure of the seismic isolation layer;

[0008] and a plurality of claw-type force-limiting assemblies arranged around the rubber seismic isolation bearing, which include a floating anchor plate fixed on the upper structure of the seismic isolation layer, a ground anchor plate fixed on the lower structure of the seismic isolation layer, a horizontal tie rod connected to the floating anchor plate, a bar-shaped clamping tooth hinged to the ground anchor plate, and a claw-type force limiter connecting the horizontal tie rod and the bar-shaped clamping tooth;

[0009] The lower support plate is hinged on the bottom of the support plate, and the lower support plate is hinged on the bottom of the support plate, and the other end of the horizontal pull rod is hinged on the top of the support plate and the lower support plate.

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

[0011] Furthermore, the claw-type force limiter also includes a threaded steel rod, which passes through the upper support plate, the disc spring assembly and the lower support plate in sequence.

[0012] Furthermore, an upper adjusting bolt fitted with the upper support plate and a lower adjusting bolt fitted with the lower support plate are respectively provided at both ends of the threaded steel rod.

[0013] Furthermore, each hinge on the claw-type force limiter is hinged by a steel connecting rod, and positioning bolts are provided at both ends of the steel connecting rod.

[0014] Furthermore, the horizontal pull rod is hinged at a hinge position between the upper rear hinge plate and the lower rear hinge plate.

[0015] Furthermore, the floating anchor plate is provided with a plurality of holes for the horizontal tie rod to pass through, and the hole diameter is larger than the diameter of the horizontal tie rod.

[0016] Furthermore, one end of the horizontal pull rod is provided with an external thread for a limit bolt to pass through and be fastened.

[0017] Furthermore, one end of the strip-shaped clamping tooth is provided with a protrusion that is locked with the claw-type notch, and the other end of the strip-shaped clamping tooth is connected to the ground anchor plate through an anchor bolt.

[0018] Furthermore, when the claw-type force limiter is subjected to a pulling force, the claw-type notch opens and the notch diameter is larger than the protrusion of the strip-shaped latch tooth, so that the claw-type force limiter is disengaged from the strip-shaped latch tooth.

[0019] Furthermore, an upper connecting plate is fixed to the upper surface of the rubber seismic isolation support, a lower connecting plate is fixed to the lower surface of the rubber seismic isolation support, and the ground anchor plate is also fixed to the lower connecting plate.

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

[0021] (1) The present invention can achieve the transformation from "rigidity in wind-resistant state" to "no stiffness in seismic isolation state". Under the action of daily wind load, the upper structure and lower structure of the seismic isolation layer are horizontally connected and fixed by claw-type force-limiting components, providing horizontal stiffness for the present invention, resisting the horizontal shear wind load borne by the seismic isolation layer under the action of wind load, and effectively solving the problem of wind resistance and comfort of the seismic isolation structure.

[0022] (2) Under the action of medium or large earthquakes, the claw force limiter of the present invention is subjected to tension, and the claw force limiter rotates and bends with the horizontal pull rod, squeezing the disc spring group to cause the claw notches of the upper and lower clamp plates to open, so that the claw notches are disengaged from the bar-shaped teeth, and the claw force limiter stops working, ensuring that the flexibility of the rubber seismic isolation bearing is not affected. While solving the problem of wind resistance and comfort, the present invention does not affect the function of the rubber seismic isolation bearing under medium or large earthquakes.

[0023] (3) After an earthquake, the present invention releases the pressure of the disc spring group by adjusting the upper adjusting bolt and the lower adjusting bolt on the claw type force limiter, so that the claw type force limiter resumes its working state. In addition, there is no plastic damage to the parts of the claw type force limiter during the entire working process, so there is no need to replace the parts. The cost of the whole life cycle is low and it has broad application prospects.

[0024] (4) The claw-type force limiting components of the present invention are suitable for existing standardized rubber seismic isolation bearings and do not increase the difficulty of installing the original rubber seismic isolation bearings. The horizontal pull rod connecting the claw-type force limiter and the floating anchor plate has a large installation error adjustment capability, so the positioning accuracy requirements for the floating anchor plate embedded in the upper structure of the seismic isolation layer are not high, which brings convenience to the construction.

[0025] (5) All parts of the present invention are of traditional steel structure, and the parts are assembled and combined, which is easy to install and reset.

[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 schematic diagram of the 3D structure of the present invention.

[0030] Figure 4 It is a structural schematic diagram of the lower connecting plate in the present invention.

[0031] Figure 5 It is a schematic front view of the structure of the claw type force limiter in the present invention.

[0032] Figure 6 It is a schematic structural axonometric diagram of the claw type force limiter in the present invention.

[0033] Figure 7 It is a schematic front view of the structure of the floating anchor plate in the present invention.

[0034] Figure 8 It is a schematic structural axonometric diagram of the floating anchor plate in the present invention.

[0035] Fig. 9 It is a schematic front view of the structure of the ground anchor plate in the present invention.

[0036] Fig.10 It is a schematic structural axonometric diagram of the ground anchor plate in the present invention.

[0037] Fig.11 It is a schematic front view of the structure of the strip-shaped latch teeth in the present invention.

[0038] Fig.12 It is a schematic axonometric diagram of the structure of the strip-shaped clamping teeth in the present invention.

[0039] Fig.13 It is a schematic front view of the structure of the horizontal pull rod in the present invention.

[0040] Fig.14 It is a schematic structural axonometric diagram of the horizontal pull rod in the present invention.

[0041] The following are marked in the figure:

[0042] 1 is the upper connecting plate; 2 is the floating anchor plate; 3 is the lower connecting plate; 4 is the bar-shaped clamping tooth; 5 is the horizontal pull rod; 6 is the claw-type force limiter; 6-1 is the upper clamp plate; 6-2 is the lower clamp plate; 6-3 is the steel connecting rod; 6-4 is the positioning bolt; 6-5 is the upper adjusting bolt; 6-6 is the lower adjusting bolt; 6-7 is the upper supporting plate; 6-8 is the lower supporting plate; 6-9 is the threaded steel rod; 6-10 is the disc spring assembly; 6-11 is the upper rear hinge plate; 6-12 is the lower rear hinge plate; 7 is the ground anchor plate; 8 is the anchor bolt; 9 is the limit bolt; 10 is the rubber seismic isolation bearing. DETAILED DESCRIPTION

[0043] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] 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.

[0045] Embodiment 1:

[0046] like Figures 1 to 14 As shown, it is a wind-resistant seismic isolation bearing combined with a claw-type force limiter, including: a rubber seismic isolation bearing 10 arranged between the upper structure and the lower structure of the seismic isolation layer; and four groups of claw-type force limiting components arranged around the rubber seismic isolation bearing 10, which include a floating anchor plate 2 fixed on the upper structure of the seismic isolation layer, a ground anchor plate 7 fixed on the lower structure of the seismic isolation layer, a horizontal tie rod 5 connected to the floating anchor plate 2, a bar-shaped clamping tooth 4 hinged to the ground anchor plate 7, and a claw-type force limiter 6 connecting the horizontal tie rod 5 and the bar-shaped clamping tooth 4. The upper surface of the rubber seismic isolation bearing 10 is also fixed with an upper connecting plate 1 by bolts, and the lower surface of the rubber seismic isolation bearing 10 is also fixed with a lower connecting plate 3 by bolts, and the ground anchor plate 7 can also be fixed to the lower connecting plate 3 by bolts.

[0047] like Figures 5-6The claw force limiter 6 shown includes an upper clamp plate 6-1, an upper support plate 6-7, an upper rear hinge plate 6-11, a lower rear hinge plate 6-12, a lower support plate 6-8, a lower clamp plate 6-2, a disc spring group 6-10 and a threaded steel rod 6-9. The disc spring group 6-10 is installed between the upper support plate 6-7 and the lower support plate 6-8. The threaded steel rod 6-9 also passes through the upper support plate 6-7, the disc spring group 6-10 and the lower support plate 6-8 in sequence. The upper adjustment bolt 6-5 that fits the upper support plate 6-7 and the lower adjustment bolt 6-6 that fits the lower support plate 6-8 are respectively provided at both ends of the threaded steel rod 6-9. The upper rear hinge plate 6-11 is also hinged to the lower rear hinge plate 6-12 to form a two-link mechanism. The two ends of the two-link mechanism are respectively hinged to the upper support plate 6-7 and the lower support plate 6-8. The middle part of the upper clamp plate 6-1 and the lower clamp plate 6-2 are hinged, and the upper support plate 6-7 and the lower support plate 6-8 are hinged to one end of the upper clamp plate 6-1 and the lower clamp plate 6-2 in the same direction, and the other end in the same direction forms a claw-type slot with adjustable opening size; a strip-shaped clamping tooth 4 is clamped in the claw-type slot, and the strip-shaped clamping tooth 4 is also hinged to the ground anchor plate 7. Each hinge on the claw-type force limiter 6 is hinged by a steel connecting rod 6-3, and positioning bolts 6-4 are also provided at both ends of the steel connecting rod 6-3. The two-link mechanism is also hinged as shown in FIG. Figures 13-14 The horizontal tie rod 5 shown in the figure has a limit bolt 9 at one end, and the other end passes through the floating anchor plate 2 and is hinged at the hinge position of the upper rear hinge plate 6-11 and the lower rear hinge plate 6-12. The horizontal tie rod 5 has an external thread at the end with the limit bolt 9, through which the limit bolt 9 passes and is fastened. Figures 7-8 The floating anchor plate 2 shown in the figure is provided with three holes for the horizontal tie rod 5 to pass through, and the hole diameter is larger than the diameter of the horizontal tie rod 5. Figures 11-12 One end of the strip-shaped latching tooth 4 is provided with a protrusion that is locked with the claw-shaped notch, and the other end of the strip-shaped latching tooth 4 is connected with the anchor bolt 8 as shown in FIG. Figures 9-10 The ground anchor plate 7 is shown as being connected. The ground anchor plate 7 is provided with three holes for anchor bolts 8 to pass through and fix the strip-shaped clamping teeth 4. When the claw-type force limiter 6 is subjected to tension, the claw-type notch opens and the notch diameter is larger than the protrusion of the strip-shaped clamping teeth 4, so that the claw-type force limiter 6 is separated from the strip-shaped clamping teeth 4.

[0048] The working principle of the present invention is:

[0049] Under the action of daily wind load, the present invention horizontally connects and fixes the floating anchor plate 2 and the ground anchor plate 7 through the claw-type force limiter 6, providing horizontal stiffness for the present invention, resisting the horizontal shear wind load borne by the seismic isolation layer under the action of wind load, and effectively solving the problem of wind resistance and comfort of the seismic isolation structure. Under the action of medium and large earthquakes, the claw-type force limiter 6 is subjected to tension, and it rotates and bends with the horizontal pull rod 5, squeezing the disc spring group 6-10 to cause the claw-type notches of the upper clamp plate 6-1 and the lower clamp plate 6-2 to open, so that the claw-type notches are disengaged from the strip-shaped tooth 4, and the claw-type force limiter 6 stops working, ensuring that the flexibility of the rubber seismic isolation bearing 10 is not affected. After the earthquake, by adjusting the upper adjustment bolt 6-5 and the lower adjustment bolt 6-6 on the claw-type force limiter 6, the pressure of the disc spring group 6-10 is released, so that the claw-type force limiter 6 resumes the working state and is buckled with the strip-shaped tooth 4.

[0050] The installation steps of the present invention are as follows:

[0051] (1) The upper connecting plate 1 and the floating anchor plate 2 are fixed by bolts on the upper structure of the seismic isolation layer, the lower connecting plate 3 and the ground anchor plate 7 are fixed by bolts on the lower structure of the seismic isolation layer, and the rubber seismic isolation bearing 10 is fixed by bolts between the upper connecting plate 1 and the lower connecting plate 3. The bar-shaped clamping teeth 4 are hinged to the ground anchor plate 7 by anchor bolts 8. The horizontal tie rod 5 is unilaterally limited to the floating anchor plate 2 by limit bolts 9.

[0052] (2) The upper rear hinge plate 6-11, the lower rear hinge plate 6-12 and the horizontal pull rod 5 are hinged by the steel connecting rod 6-3 and the positioning bolt 6-4. The upper support plate 6-7 is hinged on the upper rear hinge plate 6-11, and the lower support plate 6-8 is hinged on the lower rear hinge plate 6-12. The disc spring group 6-10 is set in the upper support plate 6-7 and the lower support plate 6-8. The threaded steel rod 6-9 passes through the hole of the disc spring group 6-10, and the threaded steel rod 6-9 is fixed in the holes of the upper support plate 6-7 and the lower support plate 6-8 respectively by using the upper adjustment bolt 6-5 and the lower adjustment bolt 6-6. The upper clamp plate 6-1 and the lower clamp plate 6-2 are hinged to the upper support plate 6-7 and the lower support plate 6-8 respectively, and the upper clamp plate 6-1 and the lower clamp plate 6-2 are also hinged to form a claw-type notch.

[0053] (3) Loosen the lower adjusting bolt 6-6 to open the claw-type notch formed by the upper clamp plate 6-1 and the lower clamp plate 6-2. Loosen the limit bolt 9 and move the claw-type force limiter 6 forward so that the strip-shaped clamping teeth 4 are located between the claw-type notches. Tighten the lower adjusting bolt 6-6 until the claw-type notch formed by the upper clamp plate 6-1 and the lower clamp plate 6-2 is closed, and the strip-shaped clamping teeth 4 are tightened.

[0054] (4) Tighten the limit bolt 9 to adjust the claw-type force limiter 6 and the horizontal pull rod 5 to a horizontal state, and the installation is completed.

[0055] 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. A wind-resistant and seismic-isolating support combined with a claw-type force limiter, characterized in that: include: A rubber seismic isolation support (10) provided between the upper structure and the lower structure of the seismic isolation layer; and a plurality of groups of claw-type force-limiting components arranged around the rubber seismic isolation support (10), comprising a floating anchor plate (2) fixed on the upper structure of the seismic isolation layer, a ground anchor plate (7) fixed on the lower structure of the seismic isolation layer, a horizontal tie rod (5) connected to the floating anchor plate (2), a strip-shaped clamping tooth (4) hinged to the ground anchor plate (7), and a claw-type force limiter (6) connecting the horizontal tie rod (5) and the strip-shaped clamping tooth (4); The claw-type force limiter (6) comprises an upper clamp plate (6-1), an upper support plate (6-7), an upper rear hinge plate (6-11), a lower rear hinge plate (6-12), a lower support plate (6-8), a lower clamp plate (6-2) and a disc spring assembly (6-10), wherein the disc spring assembly (6-10) is installed between the upper support plate (6-7) and the lower support plate (6-8), and the upper rear hinge plate (6-11) is also hinged to the lower rear hinge plate (6-12) to form a two-link mechanism, wherein the two ends of the two-link mechanism are respectively hinged to the upper support plate (6-7) and the lower support plate (6-8), and the upper rear hinge plate (6-11) The horizontal pull rod (5) is also hinged at the hinged portion with the lower rear hinge plate (6-12), and the other end of the horizontal pull rod (5) passes through the floating anchor plate (2) and the limit bolt (9) in sequence. The middle positions of the upper clamp plate (6-1) and the lower clamp plate (6-2) are hinged, and the ends in the same direction of the upper clamp plate (6-1) and the lower clamp plate (6-2) are also hinged to the upper support plate (6-7) and the lower support plate (6-8) respectively, and the other ends in the same direction form a claw-type notch with an adjustable opening size, and the bar-shaped clamping tooth (4) is clamped in the claw-type notch, and the other end of the bar-shaped clamping tooth (4) is hinged to the ground anchor plate (7); Wherein, the claw-type force limiter (6) further comprises a threaded steel rod (6-9), and the threaded steel rod (6-9) passes through the upper support plate (6-7), the disc spring assembly (6-10) and the lower support plate (6-8) in sequence; An upper adjusting bolt (6-5) fitted with the upper supporting plate (6-7) and a lower adjusting bolt (6-6) fitted with the lower supporting plate (6-8) are respectively provided at both ends of the threaded steel rod (6-9).

2. The wind-resistant and seismic-isolating support combined with a claw-type force limiter according to claim 1, characterized in that: Each hinged joint on the claw-type force limiter (6) is hinged via a steel connecting rod (6-3), and positioning bolts (6-4) are provided at both ends of the steel connecting rod (6-3).

3. The wind-resistant and seismic-isolating support combined with a claw-type force limiter according to claim 1, characterized in that: The horizontal pull rod (5) is hingedly connected at a hinged position between the upper rear hinge plate (6-11) and the lower rear hinge plate (6-12).

4. The wind-resistant and seismic-isolating support combined with a claw-type force limiter according to claim 1, characterized in that: The floating anchor plate (2) is provided with a plurality of holes for the horizontal tie rod (5) to pass through, and the diameter of the holes is larger than the diameter of the horizontal tie rod (5).

5. The wind-resistant and seismic-isolating support combined with a claw-type force limiter according to claim 1, characterized in that: One end of the horizontal pull rod (5) is provided with an external thread for a limit bolt (9) to pass through and fasten.

6. The wind-resistant and seismic-isolating support combined with a claw-type force limiter according to claim 1, characterized in that: One end of the strip-shaped clamping tooth (4) is provided with a protrusion that is locked with the claw-type notch, and the other end of the strip-shaped clamping tooth (4) is connected to the ground anchor plate (7) via an anchor bolt (8).

7. The wind-resistant and seismic-isolating support combined with a claw-type force limiter according to claim 6, characterized in that: When the claw-type force limiter (6) is subjected to a pulling force, the claw-type notch opens and the notch diameter is larger than the protrusion of the strip-shaped latching tooth (4), so that the claw-type force limiter (6) is disengaged from the strip-shaped latching tooth (4).

8. The wind-resistant and seismic-isolating support combined with a claw-type force limiter according to claim 1, characterized in that: An upper connecting plate (1) is also fixed to the upper surface of the rubber seismic isolation support (10), a lower connecting plate (3) is also fixed to the lower surface of the rubber seismic isolation support (10), and the ground anchor plate (7) is also fixed to the lower connecting plate (3).

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