An energy-consuming multi-stage resilient limiting device

Abstract

The present invention is an energy-consuming multi-stage ductile limiting device, which includes a base plate. An inner seat plate is fixed on the upper surface of the base plate. An inner damping component is anchored on the inner seat plate. An outer damping component is anchored on the base plate outside the inner damping component. A hierarchical connection damping component is anchored between the top of the inner damping component and the outer damping component. The inner damping component includes an inner damping plate frame arranged in the left-right direction and anchored on the inner seat plate. Stiffening plates are arranged between the two side plates of the inner damping plate frame. An inner damping shear member is arranged inside the inner damping plate frame. The outer damping component includes two side surface bending plates anchored on the base plate, and a top plate is fixedly arranged between the tops of the two side surface bending plates. The hierarchical connection damping component includes an outer steel ring anchored between the top of the inner damping plate frame and the top plate. A rubber layer is fixedly arranged inside the outer steel ring, and several layers of stiffening steel plates are arranged inside the rubber layer. The present invention has multi-stage limiting, energy-consuming, and seismic isolation and vibration reduction functions, and can effectively prevent the occurrence of earthquake displacement damage disasters.

Description

Technical Field

[0001] The present invention relates to the technical field of civil engineering, and in particular to an energy-dissipating multi-stage ductile limiting device. Background Art

[0002] An earthquake is essentially a fortuitous action. Although the probability of occurrence is small, its destructiveness is extremely large. At present, people's understanding of earthquakes is still very limited, and accurate earthquake prediction and forecasting cannot be achieved. In an earthquake, structural displacement damage is one of the most serious types of earthquake damage, often resulting in serious damage to the structure and loss of its function, and even collapse, leading to serious life and property safety. A large number of earthquake damage investigations show that adopting appropriate seismic structural measures can significantly reduce the serious earthquake damage caused by structural displacement, help ensure the necessary structural functions after the earthquake, and improve the recoverability of the structure.

[0003] At present, there are multiple problems in the seismic design of structural limiting blocks. Existing limiting measures are usually designed according to the structure, but many measures such as commonly used reinforced concrete blocks and steel corbels lack effective analysis models and design methods. The force transmission path of the blocks is not clear, they cannot effectively adapt to earthquakes of different intensities, and cannot effectively dissipate the seismic energy under strong earthquakes. In addition, the repair of the blocks is difficult and costly, and they cannot be detected, repaired, and replaced after an earthquake. Once the blocks undergo shear failure, it will lead to serious damage to the structure. Summary of the Invention

[0004] The present invention aims to solve the deficiencies of the prior art, and provides an energy-dissipating multi-stage ductile limiting device, which can dissipate the seismic energy under strong earthquakes, reduce the seismic damage of structural displacement under strong earthquakes, effectively protect the lower foundation of the structure, and is convenient for later maintenance and replacement.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] An energy-dissipating multi-stage ductile limiting device, comprising a base plate, an inner seat plate is fixed on the upper surface of the base plate through connecting bolts, an inner damping component is anchored on the inner seat plate, an outer damping component is anchored on the base plate outside the inner damping component, and a hierarchical connection damping component is anchored between the top of the inner damping component and the outer damping component;

[0007] The inner damping component includes inner damping plate frames arranged in the left-right direction and anchored on the inner seat plate. The inner damping plate frames are in an n-shaped structure. Stiffening plates are provided between the two side plates of the inner damping plate frames, and inner damping shear members are provided inside the inner damping plate frames;

[0008] The outer damping component includes two side bending plates anchored on the base plate. The two side bending plates are arranged on the left and right sides of the inner seat plate, and a top plate is fixed between the tops of the two side bending plates.

[0009] The hierarchical connection damping component includes an outer steel ring anchored between the top of the inner damping plate frame and the top plate. A rubber layer is fixedly arranged inside the outer steel ring, and several layers of stiffening steel plates are arranged from top to bottom inside the rubber layer. The length of the stiffening steel plate is less than the length of the horizontal section of the outer steel ring.

[0010] The number of inner damping components on the inner seat plate is multiple, and the multiple inner damping components are arranged in parallel and equidistantly from front to back.

[0011] The number of outer damping components on the base plate is multiple, and the multiple outer damping components are arranged outwards in sequence. A hierarchical connection damping component is anchored between the top of the inner outer damping component and the adjacent outer outer damping component inside.

[0012] The side bending plate is a rectangular plate structure or an X-shaped structure.

[0013] The inner damping plate frame and the inner seat plate are integrally machined or the inner damping plate frame is welded to the inner seat plate.

[0014] The side bending plate and the base plate are integrally machined or the side bending plate is welded to the base plate; the top plate and the two side bending plates are integrally machined or the top plate is welded to the two side bending plates.

[0015] The outer steel ring is welded to the inner damping plate frame and the top plate, and the two ends of the outer steel ring are semicircular structures.

[0016] The rubber layer is made of one of high damping rubber, natural rubber, and chloroprene rubber.

[0017] Inner damping cushions are arranged at the upper ends of the outer walls of the two side plates of the inner damping plate frame; outer damping cushions are arranged at the upper ends of the outer walls of the side bending plates.

[0018] The beneficial effects of the present invention are as follows: The structural mechanics constitutive relation of the present invention is clear, the force transmission is clear, the calculation is convenient, and it is convenient for refined design; it can be designed in a unitized and modular manner, and the installation, maintenance, and replacement are convenient; it has multiple-level limiting, energy dissipation, and seismic isolation and vibration reduction functions, and can effectively prevent the occurrence of earthquake displacement damage disasters. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the present invention when there is one outer damping component;

[0020] Figure 2 It is an elevation view of the inner damping component on the inner seat plate;

[0021] Figure 3 It is an elevation view of the outer damping component on the base plate;

[0022] Figure 4 It is an elevation view of the hierarchical connection damping component;

[0023] Figure 5Schematic diagram of the structure of the present invention when there are two external damping components;

[0024] Figure 6 Stereogram of the present invention when there is one external damping component;

[0025] Figure 7 Exploded view of the present invention when there is one external damping component;

[0026] In the figure: 1 - base plate; 2 - connecting bolt; 3 - inner seat plate; 4 - inner damping component; 5 - external damping component; 6 - hierarchical connection damping component; 7 - anchoring bolt; 8 - anchoring sleeve; 9 - first structure; 10 - second structure;

[0027] 41 - inner damping plate frame; 42 - stiffening plate; 43 - inner damping shear member; 44 - inner damping buffer pad;

[0028] 51 - side bending plate; 52 - top plate; 53 - external damping buffer pad;

[0029] 61 - outer steel ring; 62 - rubber layer; 63 - stiffening steel plate;

[0030] The following will describe in detail with reference to the accompanying drawings in conjunction with the embodiments of the present invention. Specific embodiments

[0031] The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention. In the following paragraphs, the present invention will be described more specifically by way of example with reference to the accompanying drawings. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings are all in a very simplified form and are all drawn using non-precise scales, only for the purpose of facilitating and clearly assisting in explaining the purpose of the embodiments of the present invention.

[0032] It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there can also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit the invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0034] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0035] An energy-consuming multi-stage resilient limiting device, as Figure 1 , Figure 6 , Figure 7 shown, includes a base plate 1. An inner seat plate 3 is fixed on the upper surface of the base plate 1 through connecting bolts 2. An inner damping component 4 is anchored on the inner seat plate 3. An outer damping component 5 is anchored on the base plate 1 outside the inner damping component 4. A hierarchical connection damping component 6 is anchored between the top of the inner damping component 4 and the outer damping component 5.

[0036] The inner damping component 4, as Figure 2 shown, includes inner damping plate frames 41 arranged in the left-right direction and anchored on the inner seat plate 3. The inner damping plate frames 41 are in an n-shaped structure. Stiffening plates 42 are provided between the two side plates of the inner damping plate frames 41. Inner damping shear members 43 are provided inside the inner damping plate frames 41. Inner damping buffer pads 44 are provided at the upper ends of the outer walls of the two side plates of the inner damping plate frames 41.

[0037] The inner damping shear members 43 can be shear deformation steel plates.

[0038] The inner damping buffer pads 44 are generally laminated rubber pads, polyurethane pads, etc.

[0039] The number of the inner damping components 4 on the inner seat plate 3 can be single or multiple. Multiple inner damping components 4 are arranged in parallel at equal intervals from front to back.

[0040] The inner damping plate frames 41 and the inner seat plate 3 are integrally machined or the inner damping plate frames 41 are welded to the inner seat plate 3. Connecting bolts 2 are provided between the inner seat plate 3 at the bottom of the inner damping component 4 and the base plate 1, and shear failure can occur under the action of a set horizontal force to unload the horizontal force of the limiting device and release the horizontal displacement of the limiting device.

[0041] The outer damping component 5, as Figure 3 shown, includes two side bending plates 51 anchored on the base plate 1. The two side bending plates 51 are arranged on the left and right sides of the inner seat plate 3. A top plate 52 is fixed between the tops of the two side bending plates 51. Outer damping buffer pads 53 are provided at the upper ends of the outer walls of the side bending plates 51.

[0042] The outer damping buffer pads 53 are generally laminated rubber pads, polyurethane pads, etc.

[0043] The side flexural plate 51 may have a constant cross-section along the vertical direction on the side. For example, the side flexural plate 51 is a rectangular plate structure.

[0044] The side flexural plate 51 may have a variable cross-section along the vertical direction on the side. For example, concave arc structures are symmetrically provided on the front and rear sides of the side flexural plate 51, and the side flexural plate 51 forms an X-shaped structure.

[0045] The side flexural plate 51 and the base plate 1 are integrally machined or the side flexural plate 51 is welded to the base plate 1; the top plate 52 and the two side flexural plates 51 are integrally machined or the top plate 52 is welded to the two side flexural plates 51.

[0046] The number of the outer damping components 5 on the base plate 1 can be multiple. As Figure 5 shown, multiple outer damping components 5 are arranged outward in sequence, and a hierarchical connection damping component 6 is anchored between the top of the inner outer damping component 5 and the adjacent outer outer damping component 5.

[0047] The horizontal thrust resistance stiffness of the inner damping component 4 is significantly greater than that of the outer damping component 5. When the stiffness meets the requirements, the inner damping shear member 43 or the stiffening plate 42 may not be provided.

[0048] The hierarchical connection damping component 6 is as Figure 4 shown, and includes an outer steel ring 61 anchored between the top of the inner damping plate frame 41 and the top plate 52. A rubber layer 62 is fixedly provided in the outer steel ring 61, and several layers of stiffening steel plates 63 are provided in the rubber layer 62 from top to bottom. The length of the stiffening steel plate 63 is less than the length of the horizontal section of the outer steel ring 61.

[0049] Rolling shear combined dislocation can occur between the upper and lower structural surfaces of the hierarchical connection damping component 6.

[0050] The outer steel ring 61 is welded to the inner damping plate frame 41 and the top plate 52, and the two ends of the outer steel ring 61 are semicircular structures.

[0051] The rubber layer 62 generally uses high-damping rubber, and flexible materials such as natural rubber and chloroprene rubber can also be used.

[0052] When the present invention is in use, as Figure 1 shown, the base plate 1 is fixedly connected to the anchor sleeve 8 arranged in the second structure 10 through an anchor bolt 7, and the outer damping component 5 is arranged in the groove of the first structure 9.

[0053] When the left - right horizontal relative displacement between the first structure 9 and the second structure 10 exceeds a certain threshold, the first structure 9 contacts the outer damping cushion 53 and transmits the horizontal force to the outer damping component 5. During the force - transmission process, the outer damping cushion 53 plays a buffering role to reduce the load - collision effect. When the left - right horizontal relative displacement between the first structure 9 and the second structure 10 further increases, the outer damping component 5 undergoes a horizontal displacement, and its side - bending plate 51 undergoes elastoplastic deformation to dissipate the structural motion energy, forming a reaction force on the first structure 9 to limit the further increase of the relative displacement between the first structure 9 and the second structure 10. At the same time, through reasonable design, the overall horizontal anti - thrust stiffness of the inner damping component 4 is much greater than that of the outer damping component 5. When the outer damping component 5 undergoes a horizontal displacement, the hierarchical connection damping component 6 located between the two will undergo shear deformation to achieve deformation coordination. The outer steel ring 61 of the hierarchical connection damping component 6 will undergo elastoplastic bending to enhance the yield - energy - dissipation capacity of the limiting device, and the rubber layer 62 will undergo shear deformation. On the one hand, it can ensure the yield stability of the outer steel ring 61, and on the other hand, it can maintain the horizontal reset force and energy - dissipation capacity. In summary, the first - level limit - energy - dissipation performance of the limiting device is achieved.

[0054] When the left - right horizontal relative displacement between the first structure 9 and the second structure 10 further increases, the inner wall of the outer damping component 5 will contact the inner damping cushion 44 at the top of the side elevation of the inner damping component 4. Since the overall horizontal anti - thrust stiffness of the inner damping component 4 is much greater than that of the outer damping component 5, it will further improve the limiting stiffness of the limiting device and achieve the second - level limit - energy - dissipation performance of the limiting device.

[0055] In extreme cases, when the horizontal force exerted by the first structure 9 on the limiting device is large, to avoid damage to the second structure 10 and its connected components, the connecting bolt 2 will be damaged, resulting in the failure of the lower connection of the inner damping component 4. Furthermore, it reduces the limiting stiffness of the limiting device and allows the limiting device to undergo a larger horizontal displacement, achieving the seismic isolation and vibration reduction function and improving the overall toughness of the structure.

[0056] The present invention is applicable to single - direction limiting on the left and right sides, and can also be applicable to bidirectional limiting. To increase the more hierarchical energy - dissipation performance of the limiting device, multiple outer damping components 5 can be set and kept at a certain distance.

[0057] The structural mechanics constitutive relation of the present invention is clear, the force - transmission is definite, the calculation is convenient, and it is convenient for refined design; it can be designed in a unitized and modular manner, with convenient installation, maintenance, and replacement; it has multi - level limiting, energy - dissipation, and seismic isolation and vibration reduction functions, and can effectively prevent the occurrence of earthquake displacement damage disasters.

[0058] The present invention has been described exemplarily in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-mentioned manner. As long as various improvements are made by adopting the method concept and technical solution of the present invention, or directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. An energy-consuming multi-stage toughness limiter, characterized in that: The invention comprises a base plate (1), an inner base plate (3) being fixed to the upper surface of the base plate (1) by connecting bolts (2), an inner damping component (4) being anchored on the inner base plate (3), an outer damping component (5) being anchored on the outside of the inner damping component (4) on the base plate (1), and a stepwise connected damping component (6) being anchored between the top of the inner damping component (4) and the outer damping component (5); The inner damping assembly (4) comprises an inner damping plate frame (41) anchored on the inner seat plate (3) and arranged in the left-right direction, the inner damping plate frame (41) being in an n-shaped structure, a stiffening plate (42) being provided between two side plates of the inner damping plate frame (41), and an inner damping shearing member (43) being provided inside the inner damping plate frame (41); The external damping assembly (5) comprises two side bending plates (51) anchored on the base plate (1), the two side bending plates (51) being arranged on the left and right sides of the inner seat plate (3), and a top plate (52) being fixed between the tops of the two side bending plates (51); The step-connected damping assembly (6) comprises an outer steel ring (61) anchored between the top of the inner damping plate frame (41) and the top plate (52), the two ends of the outer steel ring (61) being semicircular structures, a rubber layer (62) being fixedly arranged inside the outer steel ring (61), a plurality of layers of stiffening steel plates (63) being arranged from top to bottom inside the rubber layer (62), the length of the stiffening steel plates (63) being shorter than the length of the horizontal section of the outer steel ring (61), and a rolling shear combination displacement can occur between the upper and lower structural surfaces of the step-connected damping assembly (6).

2. An energy-consuming multi-stage toughness limiting device according to claim 1, characterized in that: There are multiple internal damping assemblies (4) on the inner seat plate (3), and the multiple internal damping assemblies (4) are arranged in parallel and equidistantly from front to rear.

3. The energy-consuming multi-stage toughness limiting device according to claim 1 is characterized in that: The base plate (1) has a plurality of external damping components (5), the plurality of external damping components (5) are arranged outward in sequence, and a stepped connection damping component (6) is anchored between the top of an internal external damping component (5) and an adjacent external external damping component (5).

4. The energy-consuming multi-stage toughness limiting device according to claim 1 is characterized in that: The side bending plate (51) is a rectangular plate structure or an X-shaped structure.

5. The energy-consuming multi-stage toughness limiting device according to claim 1 is characterized in that: The inner damping plate frame (41) and the inner seat plate (3) are integrally cut and formed, or the inner damping plate frame (41) is welded to the inner seat plate (3).

6. The energy-consuming multi-stage toughness limiting device according to claim 1 is characterized in that: The side bending plates (51) and the base plate (1) are integrally cut and formed, or the side bending plates (51) are welded to the base plate (1); the top plate (52) and the two side bending plates (51) are integrally cut and formed, or the top plate (52) is welded to the two side bending plates (51).

7. The energy-consuming multi-stage toughness limiting device according to claim 1 is characterized in that: The outer steel ring (61) is welded to the inner damping plate frame (41) and the top plate (52).

8. The energy-consuming multi-stage toughness limiting device according to claim 1 is characterized in that: The rubber layer (62) is made of one of high damping rubber, natural rubber and chloroprene rubber.

9. The energy-consuming multi-stage toughness limiting device according to claim 1, characterized in that: The upper ends of the outer walls of the two side plates of the inner damping plate frame (41) are both provided with inner damping buffer pads (44); and the upper ends of the outer walls of the side bending plates (51) are provided with outer damping buffer pads (53).

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