Energy consumption type multi-level toughness limiting device

Abstract

The invention relates to an energy consumption type multistage toughness limiting device which comprises a base plate, an inner seat plate is fixed to the upper surface of the base plate, an inner damping assembly is anchored to the inner seat plate, an outer damping assembly is anchored to the portion, outside the inner damping assembly, of the base plate, and a graded connection damping assembly is anchored between the top of the inner damping assembly and the outer damping assembly. The inner damping assembly comprises an inner damping plate frame anchored on the inner seat plate in the left-right direction, a stiffening plate is arranged between two side plates of the inner damping plate frame, and an inner damping shearing piece is arranged in the inner damping plate frame; the outer damping assembly comprises two side face bent plates anchored to the base plate, and a top plate is fixedly arranged between the tops of the two side face bent plates. The graded connection damping assembly comprises an outer wrapping steel ring anchored between the top of the inner damping plate frame and the top plate, a rubber layer is fixedly arranged in the outer wrapping steel ring, and a plurality of layers of stiffening steel plates are arranged in the rubber layer. The device has the functions of multi-stage limiting, energy consumption and seismic mitigation and isolation, and can effectively prevent the occurrence of earthquake displacement damage disasters.

Description

Technical Field

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

[0002] Earthquakes are essentially accidental events, with a low probability of occurrence but extremely destructive power. At present, people's understanding of earthquakes is still very limited, and it is impossible to accurately predict and forecast earthquakes. In earthquakes, structural displacement damage is the most serious type of earthquake damage, which often leads to serious damage to the structure and loss of its function, or even collapse, resulting in serious loss of life and property safety. A large number of earthquake damage surveys have shown that the use of appropriate earthquake-resistant structural measures can significantly reduce the serious earthquake damage caused by structural displacement, help to ensure the necessary structural functions after the disaster, and improve the recoverability of the structure.

[0003] At present, there are many problems in the seismic design of the structural limit blocks. Existing limit measures are usually designed according to the structure, but many measures such as the commonly used reinforced concrete blocks and steel brackets lack effective analysis models and design methods. The force transmission path of the block is unclear, and it cannot effectively adapt to earthquakes of different intensities and cannot effectively dissipate the seismic energy under strong earthquakes. In addition, the repair of the block is difficult and costly, and it cannot be detected, repaired, and replaced after the earthquake. Once the block is sheared, it will cause serious damage to the structure. Summary of the invention

[0004] The present invention aims to solve the deficiencies of the prior art and to provide an energy-absorbing multi-stage toughness limiter that can dissipate seismic energy under strong earthquakes, reduce structural displacement damage under strong earthquakes, and effectively protect the lower foundation of the structure, making subsequent maintenance and replacement convenient.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An energy-dissipating multi-stage toughness limiter comprises a base plate, an inner base plate is fixed to the upper surface of the base plate by connecting bolts, an inner damping assembly is anchored on the inner base plate, an outer damping assembly is anchored on the base plate outside the inner damping assembly, and a graded connection damping assembly is anchored between the top of the inner damping assembly and the outer damping assembly;

[0007] The inner damping assembly comprises an inner damping plate frame anchored on the inner seat plate and arranged in the left and right directions, the inner damping plate frame is in an n-shaped structure, a stiffening plate is arranged between two side plates of the inner damping plate frame, and an inner damping shearing piece is arranged inside the inner damping plate frame;

[0008] The external damping assembly comprises 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 graded connection damping assembly includes an outer steel ring anchored between the top of the inner damping plate frame and the top plate, a rubber layer is fixed inside the outer steel ring, and several layers of stiffening steel plates are arranged from top to bottom in the rubber layer, and the length of the stiffening steel plates is less than the length of the horizontal section of the outer steel ring.

[0010] There are multiple inner damping assemblies on the inner seat plate, and the multiple inner damping assemblies are arranged in parallel and equidistantly from front to rear.

[0011] The number of the external damping components of the base plate is multiple, and the multiple external damping components are arranged outward in sequence. A graded connection damping component is anchored between the top of the internal external damping component and the adjacent external external damping component.

[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 cut and formed or the inner damping plate frame is welded to the inner seat plate.

[0014] The side bending plate and the base plate are integrally cut and formed, or the side bending plate is welded to the base plate; the top plate and the two side bending plates are integrally cut and formed, 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] The upper ends of the outer walls of the two side plates of the inner damping plate frame are provided with inner damping buffer pads; the upper ends of the outer walls of the side bending plates are provided with outer damping buffer pads.

[0018] The beneficial effects of the present invention are as follows: the structural mechanics of the present invention is clear, the force transmission is clear, the calculation is convenient, and it is easy to design in a refined manner; it can be designed in a unitized and modular manner, and is easy to install, repair and replace; it has multi-level limit, energy consumption and seismic isolation functions, and can effectively prevent earthquake displacement damage disasters. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure when the present invention has an external damping component;

[0020] Figure 2 It is a schematic elevation view of the inner damping assembly on the inner seat plate;

[0021] Figure 3 is a schematic elevation view of the external damping assembly on the base plate;

[0022] Figure 4 It is a schematic elevation diagram of the step-connected damping assembly;

[0023] Figure 5It is a schematic diagram of the structure when the present invention has two external damping components;

[0024] Figure 6 A perspective view of the present invention having an external damping component;

[0025] Figure 7 It is an exploded schematic diagram of the present invention when it has an external damping component;

[0026] In the figure: 1-base plate; 2-connecting bolts; 3-inner seat plate; 4-inner damping assembly; 5-outer damping assembly; 6-stage connection damping assembly; 7-anchor bolts; 8-anchor sleeves; 9-first structure; 10-second structure;

[0027] 41-internal damping plate frame; 42-stiffening plate; 43-internal damping shear member; 44-internal damping cushion;

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

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

[0030] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The embodiments are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail by way of example with reference to the accompanying drawings in the following paragraphs. The advantages and features of the present invention will become clearer according to the following description. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist 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 may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present 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 toughness limiter, such as Figure 1 , Figure 6 , Figure 7 As shown, it includes a base plate 1, an inner base plate 3 is fixed to the upper surface of the base plate 1 by connecting bolts 2, an inner damping assembly 4 is anchored on the inner base plate 3, an outer damping assembly 5 is anchored outside the inner damping assembly 4 on the base plate 1, and a graded connection damping assembly 6 is anchored between the top of the inner damping assembly 4 and the outer damping assembly 5.

[0036] Internal damping component 4 such as Figure 2 As shown, it includes an inner damping plate frame 41 anchored on the inner seat plate 3 and arranged in the left and right directions. The inner damping plate frame 41 is in an n-shaped structure. A stiffening plate 42 is provided between the two side plates of the inner damping plate frame 41. An inner damping shear member 43 is provided inside the inner damping plate frame 41. The upper ends of the outer walls of the two side plates of the inner damping plate frame 41 are provided with inner damping buffer pads 44.

[0037] The internal damping shear member 43 may be a shear-deformed steel plate.

[0038] The internal damping cushion 44 is generally a layered rubber cushion, a polyurethane cushion or the like.

[0039] The number of the inner damping components 4 on the inner seat plate 3 may be single or multiple, and the multiple inner damping components 4 are arranged in parallel and equidistantly from front to back.

[0040] The inner damping plate frame 41 is integrally cut and formed with the inner seat plate 3 or the inner damping plate frame 41 is welded to the inner seat plate 3. The inner seat plate 3 and the base plate 1 at the bottom of the inner damping assembly 4 are provided with connecting bolts 2, which can cause shear failure under the action of a set horizontal force to unload the horizontal force of the limit device and release the horizontal displacement of the limit device.

[0041] The external damping component 5 is as follows Figure 3 As shown, it 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, and an external damping buffer pad 53 is provided at the upper end of the outer wall of the side bending plate 51.

[0042] The external damping cushion 53 is generally a layered rubber cushion, a polyurethane cushion or the like.

[0043] The side surface of the side bending plate 51 may have a uniform cross-section along the vertical direction. For example, the side bending plate 51 is a rectangular plate structure.

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

[0045] The side bending plates 51 are integrally cut and formed with the base plate 1 or the side bending plates 51 are welded to the base plate 1 ; the top plate 52 is integrally cut and formed with the two side bending plates 51 or the top plate 52 is welded to the two side bending plates 51 .

[0046] The number of the external damping components 5 of the base plate 1 can be multiple, such as Figure 5 As shown, a plurality of external damping components 5 are sequentially arranged outwardly, and a stepped connecting damping component 6 is anchored between the top of the internal external damping component 5 and the adjacent external external damping component 5 .

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

[0048] The step-wise connected damping assembly 6 is as follows Figure 4 As shown, it 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 fixed in the outer steel ring 61, and several layers of stiffening steel plates 63 are arranged in the rubber layer 62 from top to bottom, and the length of the stiffening steel plate 63 is less than the length of the horizontal section of the outer steel ring 61.

[0049] A rolling and shearing combined displacement may occur between the upper and lower structural surfaces of the step-connected damping assembly 6 .

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

[0051] The rubber layer 62 is generally made of high damping rubber, but may also be made of flexible materials such as natural rubber and chloroprene rubber.

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

[0053] When the horizontal relative displacement between the first structure 9 and the second structure 10 exceeds a certain threshold, the first structure 9 contacts the external damping cushion 53 and transmits the horizontal force to the external damping assembly 5. During the force transmission process, the external damping cushion 53 plays a buffering role to reduce the load collision effect. When the horizontal relative displacement between the first structure 9 and the second structure 10 increases further, the external damping assembly 5 is horizontally displaced, and the side bending plate 51 thereof undergoes elastic-plastic deformation, dissipating the structural motion energy and forming a reaction force on the first structure 9 to limit the relative displacement between the first structure 9 and the second structure 10. The displacement is further increased; at the same time, through reasonable design, the overall horizontal 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 horizontal displacement, the stepped connected damping component 6 located between the two will undergo shear deformation to achieve deformation coordination. The outer steel ring 61 of the stepped connected damping component 6 will undergo elastic-plastic bending to improve the yield energy dissipation capacity of the limiting device. The rubber layer 62 undergoes shear deformation, which can ensure the yield stability of the outer steel ring 61 on the one hand, and maintain the horizontal reset force and energy dissipation capacity on the other hand. In summary, the first-level limiting 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 is further increased, the inner wall of the external damping component 5 will contact the internal damping buffer pad 44 at the top of the side elevation of the internal damping component 4. Since the overall horizontal anti-thrust stiffness of the internal damping component 4 is much greater than that of the external damping component 5, the limiting stiffness of the limiting device will be further improved, thereby realizing the secondary limiting energy dissipation performance of the limiting device.

[0055] In extreme cases, when the horizontal force exerted by the first structure 9 on the limit device is large, in order to avoid damage to the second structure 10 and its connected components, the connecting bolt 2 will be broken, causing the lower connection of the internal damping assembly 4 to fail, thereby reducing the limit stiffness of the limit device and allowing the limit device to have a larger horizontal displacement, thereby realizing the seismic isolation function and improving the overall toughness of the structure.

[0056] The present invention can be applied to unidirectional limiting on the left and right sides, and can also be applied to bidirectional limiting. In order to increase the graded energy dissipation performance of the limiting device, multiple external damping components 5 can be provided and maintain a certain spacing.

[0057] The structural mechanics of the present invention is clear, the force transmission is clear, the calculation is convenient, and it is easy to design in detail; it can be designed in a unitized and modular manner, and is easy to install, repair and replace; it has multi-level limit, energy dissipation and seismic isolation functions, and can effectively prevent earthquake displacement damage disasters.

[0058] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or are 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).

2. An energy-consuming multi-stage toughness limiting device according to claim 1, characterized in that: 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), a rubber layer (62) being fixedly arranged in the outer steel ring (61), and a plurality of layers of stiffening steel plates (63) being arranged in the rubber layer (62) from top to bottom, wherein the length of the stiffening steel plates (63) is less than the length of the horizontal section of the outer steel ring (61).

3. The energy-consuming multi-stage toughness limiting device according to claim 1 is 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.

4. 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).

5. 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.

6. 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).

7. 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).

8. The energy-consuming multi-stage toughness limiting device according to claim 2 is characterized in that: The outer steel ring (61) is welded to the inner damping plate frame (41) and the top plate (52), and both ends of the outer steel ring (61) are semicircular structures.

9. The energy-consuming multi-stage toughness limiting device according to claim 2, characterized in that: The rubber layer (62) is made of one of high damping rubber, natural rubber and chloroprene rubber.

10. 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 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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