Displacement amplification type self-resetting friction energy dissipation support and assembling method thereof

Abstract

This invention discloses a displacement-enlarged self-resetting friction energy-dissipating support and its assembly method, comprising a friction energy-dissipating device and a self-resetting device. The friction energy-dissipating device includes an inner constraint unit and an outer constraint unit, which are spaced apart from the inside out. The self-resetting device includes a first disc spring limiting unit, a second disc spring limiting unit, an anchor plate, an inner baffle, an outer baffle, a disc spring, a guide screw, and four reset ribs. The first disc spring limiting unit is fixed to the inner wall of the inner constraint unit. The second disc spring limiting unit passes through the inner constraint unit and is fixedly connected to the outer constraint unit. The inner baffle is located inside the inner constraint unit and contacts both the first and second disc spring limiting units. The disc spring is located between the inner and outer baffles. The four reset ribs all pass through the inner baffle and surround the disc spring, with each reset rib's two ends anchored to the anchor plate and the outer baffle, respectively. This invention has stronger reset and deformation capabilities.

Description

Technical Field

[0001] This invention relates to the field of self-resetting energy dissipation support technology, and more specifically to a displacement-amplified self-resetting friction energy dissipation support and its assembly method. Background Technology

[0002] Buckling-restrained braces (BRBs) can effectively reduce the seismic response of structures and decrease the degree of structural damage under earthquakes. However, since ordinary BRBs rely on the cumulative plastic deformation of the metal core to dissipate seismic energy, the main structure supported by the BRB may experience significant residual deformation after an earthquake, leading to extremely high post-earthquake repair costs. Self-resetting BRBs (SRBs) add a self-resetting system to the basic BRB design. While utilizing the elastoplastic deformation of the metal core to dissipate energy, the self-resetting system provides a restoring force, thereby effectively controlling and reducing the residual deformation of the BRB under seismic loading and reducing seismic damage to the structure. However, traditional self-resetting BRBs have the following drawbacks: the prestressed steel reinforcement requires high material strength, and the BRB's energy dissipation capacity is limited by the deformation capacity of the restoring reinforcement; other restoring materials, such as shape memory alloys, have disadvantages such as high cost, difficulty in anchoring, and significant temperature-dependent mechanical properties.

[0003] Therefore, providing a displacement-enlarged self-resetting friction energy-dissipating support with better deformation and energy dissipation capabilities, and its assembly method, is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the present invention provides a displacement-amplified self-resetting friction energy dissipation support and its assembly method, which has stronger reset and deformation capabilities.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A displacement-amplified self-resetting friction energy-dissipating support includes:

[0007] A friction energy dissipation device, comprising an inner constraint unit and an outer constraint unit, wherein the inner constraint unit and the outer constraint unit are distributed at intervals from the inside out and connected together;

[0008] The self-resetting device includes a first disc spring limiting unit, a second disc spring limiting unit, an anchoring plate, an inner baffle, an outer baffle, a disc spring, a guide screw, and four reset ribs. The first disc spring limiting unit is fixed to the inner wall of the inner constraint unit; the second disc spring limiting unit passes through the inner constraint unit and is fixedly connected to the outer constraint unit; the anchoring plate, the inner baffle, and the outer baffle are distributed sequentially from top to bottom, wherein the anchoring plate is located at the top of the inner and outer constraint units, the outer baffle is located at the bottom of the inner constraint unit, and the inner baffle is located inside the inner constraint unit and contacts the first and second disc spring limiting units respectively; the disc spring is located between the inner baffle and the outer baffle; the guide screw passes through the disc spring and its two ends are anchored to the inner baffle and the outer baffle respectively; the four reset ribs all pass through the inner baffle and surround the disc spring, and the two ends of each reset rib are anchored to the anchoring plate and the outer baffle respectively.

[0009] By adopting the above solutions, the beneficial effects of the present invention are:

[0010] 1) The friction energy dissipation device has a stable energy dissipation capacity under reciprocating load. At the same time, the support deformation can be transmitted to the self-resetting device through the displacement of the inner and outer constraint units, so as to achieve the purpose of coordinated deformation of the support as a whole, thereby ensuring good energy dissipation and reset capabilities.

[0011] 2) Four parallel reset ribs are connected in series with disc springs to form a self-resetting device. After applying preload to the disc springs, the support acquires a self-resetting force. At the same time, the introduction of disc springs with stronger deformation capacity improves the overall deformation capacity of the support, thereby solving the problem of insufficient deformation capacity caused by the reset material limiting the energy consumption capacity of the self-resetting support.

[0012] Furthermore, the inner constraint unit includes two symmetrically distributed first welded steel plates and two symmetrically distributed second welded steel plates, which are welded together as one unit; the first disc spring limiting unit is welded to the inner wall of the second welded steel plate; each of the two first welded steel plates has a through hole, through which the second disc spring limiting unit passes and is fixedly connected to the outer constraint unit; the tops of the two first welded steel plates are fixedly connected by a first connector; and the anchor plate is inserted into the first connector.

[0013] Furthermore, the external constraint unit includes two steel plates, multiple L-shaped friction plates, and multiple friction blocks. The two steel plates are respectively located outside the two first welded steel plates, and the second disc spring limiting unit is fixedly connected to the steel plates through the through hole. The multiple L-shaped friction plates are respectively located between the steel plates and the second welded steel plates, and each L-shaped friction plate is anchored to the second welded steel plate by a first bolt. The multiple friction blocks are respectively located on the multiple L-shaped friction plates, and each friction block is anchored to the steel plate by a second bolt, which penetrates the L-shaped friction plate. The extended ends of the two steel plates are connected by a second connector.

[0014] Furthermore, the first connecting member includes a first T-shaped plate and two first stiffening ribs, and the tops of the two first welded steel plates are fixedly connected by the first T-shaped plate; the two first stiffening ribs are respectively fixed on the two sides of the first T-shaped plate; the second connecting member includes a second T-shaped plate, a plurality of angle steels and two second stiffening ribs, and the second T-shaped plate is fixed to the bottom of the steel plate by the plurality of angle steels; the two second stiffening ribs are respectively fixed on the two sides of the second T-shaped plate.

[0015] Furthermore, the second disc spring limiting unit includes a limiting steel plate and a welded steel block connected as one piece, wherein the bottom plane of the limiting block of the limiting steel plate is located on the same horizontal plane as the bottom plane of the first disc spring limiting unit; the welded steel block is welded to the steel plate through the through hole.

[0016] The assembly method of the above-mentioned displacement-enlarged self-resetting friction energy dissipation support includes the following steps:

[0017] S1, the first disc spring limiting unit is welded to the inner wall of the second welded steel plate, and its position is flush with the through hole of the first welded steel plate; the welded steel block of the second disc spring limiting unit is welded to the inner wall of the steel plate through the through hole; the two first welded steel plates and the two second welded steel plates are welded together to form an inner constraint unit, and the first connector is welded to the top of the two first welded steel plates; the first bolt is used to anchor the L-shaped friction plate to the surface of the second welded steel plate; the friction block is placed on the side of the L-shaped friction plate corresponding to the steel plate, and then the second bolt is passed through the holes and slots of the friction block and the L-shaped friction plate in sequence to anchor the friction block to the steel plate. Finally, the outer constraint unit is spaced out and wrapped around the inner constraint unit.

[0018] S2, the guide screw passes through the disc spring and is anchored at both ends to the inner baffle and the outer baffle respectively; the reset rib passes through the pre-made holes of the inner baffle, the outer baffle and the anchor plate, and is anchored to the outer baffle and the anchor plate respectively; then the inner baffle is placed in the inner constraint unit so that it contacts the first disc spring limiting unit and the second disc spring limiting unit. At this time, the anchor plate is inserted on the first connector and contacts the inner constraint unit and the outer constraint unit respectively, and the outer baffle contacts the inner constraint unit.

[0019] S3, weld the second connector between the two extended ends of the steel plates.

[0020] By adopting the above solutions, the beneficial effects of the present invention are:

[0021] Assembly and processing are simple and convenient, reducing installation and construction costs. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 The attached figure is a schematic diagram of the overall structure of a displacement-amplified self-resetting friction energy-dissipating support provided by the present invention.

[0024] Figure 2 The attached figure is an exploded view of the friction energy dissipation device provided by the present invention;

[0025] Figure 3 The attached figure is an exploded view of the self-resetting device provided by the present invention;

[0026] Figure 4 The attached figure is an exploded view of the second connector provided by the present invention;

[0027] Figure 5 The attached figure is a cross-sectional view of a displacement-amplified self-resetting friction energy-dissipating support provided by the present invention in a tension state.

[0028] Figure 6 The attached figure is a cross-sectional view of a displacement-amplified self-resetting friction energy-dissipating support provided by the present invention in a support compression state. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figure 1-6 As shown in the figure, an embodiment of the present invention discloses a displacement-enlarged self-resetting friction energy-dissipating support, including a friction energy-dissipating device 1 and a self-resetting device 2. The friction energy-dissipating device 1 includes an inner constraint unit 11 and an outer constraint unit 12, which are spaced apart from the inside and connected together. The self-resetting device 2 includes a first disc spring limiting unit 13, a second disc spring limiting unit 14, an anchor plate 21, an inner baffle 22, an outer baffle 23, a disc spring 24, a guide screw 25, and four reset ribs 26. The first disc spring limiting unit 13 is fixed to the inner wall of the inner constraint unit 11. The second disc spring limiting unit 14 passes through the inner constraint unit 11 and is fixedly connected to the outer constraint unit 12. Anchor plate 21, inner baffle 22 and outer baffle 23 are distributed from top to bottom. Anchor plate 21 is located at the top of inner constraint unit 11 and outer constraint unit 12. Outer baffle 23 is located at the bottom of inner constraint unit 11. Inner baffle 22 is located inside inner constraint unit 11 and contacts first disc spring limiting unit 13 and second disc spring limiting unit 14 respectively. Disc spring 24 is located between inner baffle 22 and outer baffle 23. Guide screw 25 passes through disc spring 24 and its two ends are anchored to inner baffle 22 and outer baffle 23 respectively. Four reset ribs 26 pass through inner baffle 22 and surround the outer periphery of disc spring 24. The two ends of each reset rib 26 are anchored to anchor plate 21 and outer baffle 23 respectively. The friction energy dissipation device 1 of this invention has a stable energy dissipation capacity under cyclic loading. At the same time, the support deformation can be transmitted to the self-resetting device 2 through the displacement of the inner constraint unit 11 and the outer constraint unit 12, so as to achieve the purpose of coordinated deformation of the support as a whole, thereby ensuring good energy dissipation and reset capabilities. The four parallel reset ribs 26 are connected in series with the disc spring 24 to form the self-resetting device 2. After applying pre-pressure to the disc spring 24, the self-resetting capability is improved to achieve the purpose of displacement amplification, thereby solving the problem that the support self-resetting capability is limited by the deformation capability of the reset material.

[0031] Specifically, the inner restraint unit 11 includes two symmetrically distributed first welded steel plates 111 and two symmetrically distributed second welded steel plates 112, which are welded together as one piece; the first disc spring limiting unit 13 is welded to the inner wall of the second welded steel plate 112; each of the two first welded steel plates 111 has a through hole, through which the second disc spring limiting unit 14 passes and is fixedly connected to the outer restraint unit 12; the tops of the two first welded steel plates 111 are fixedly connected by the first connector 3; and the anchor plate 21 is inserted through the first connector 3.

[0032] Specifically, the external constraint unit 12 includes two steel plates 121, multiple L-shaped friction plates 122, and multiple friction blocks 123. The two steel plates 121 are located on the outer sides of the two first welded steel plates 111, and the second disc spring limiting unit 14 is fixedly connected to the steel plates 121 through the through hole. The multiple L-shaped friction plates 122 are located between the steel plates 121 and the second welded steel plates 112, and each L-shaped friction plate 122 is anchored to the second welded steel plate 112 by a first bolt. The multiple friction blocks 123 are located on the multiple L-shaped friction plates 122, and each friction block 123 is anchored to the steel plate 121 by a second bolt, which passes through the L-shaped friction plate 122. The extended ends of the two steel plates 121 are connected by a second connector 4.

[0033] Specifically, the first connecting member 3 includes a first T-shaped plate 31 and two first stiffening ribs 32. The tops of the two first welded steel plates 111 are fixedly connected by the first T-shaped plate 31. The two first stiffening ribs 32 are respectively fixed to the two sides of the first T-shaped plate 31. The second connecting member 4 includes a second T-shaped plate 41, multiple angle steels 42 and two second stiffening ribs 43. The second T-shaped plate 41 is fixed to the bottom of the steel plate 41 by multiple angle steels 42. The two second stiffening ribs 43 are respectively fixed to the two sides of the second T-shaped plate 41.

[0034] Specifically, the second disc spring limiting unit 14 includes a limiting steel plate 141 and a welded steel block 142 connected as one piece. The bottom plane of the limiting block of the limiting steel plate 141 is on the same horizontal plane as the bottom plane of the first disc spring limiting unit 13. The welded steel block 142 is welded to the steel plate 121 through the through hole.

[0035] This invention also discloses an assembly method for a displacement-amplified self-resetting friction energy-dissipating support, comprising the following steps:

[0036] S1, the first disc spring limiting unit 13 is welded to the inner wall of the second welded steel plate 112, and made flush with the through hole of the first welded steel plate 111; the welded steel block 142 of the second disc spring limiting unit 14 is welded to the inner wall of the steel plate 121 through the through hole; the two first welded steel plates 111 and the two second welded steel plates 112 are welded together to form the inner constraint unit 11, and the first connector 3 is welded to the top of the two first welded steel plates 111; the L-shaped friction plate 122 is anchored to the surface of the second welded steel plate 112 using the first bolt; the friction block 123 is placed on the side of the L-shaped friction plate 122 corresponding to the steel plate 121, and then the second bolt is passed through the holes and slots of the friction block 123 and the L-shaped friction plate 122 in sequence, so that the friction block 123 is anchored to the steel plate 121, and finally the outer constraint unit 12 is wrapped around the inner constraint unit 11 at intervals;

[0037] S2, the guide screw 25 passes through the disc spring 24 and is anchored at both ends to the inner baffle 22 and the outer baffle 23 respectively; the reset rib 26 passes through the pre-made holes of the inner baffle 22, the outer baffle 23 and the anchor plate 21, and is anchored to the outer baffle 23 and the anchor plate 21 respectively; then the inner baffle 22 is placed in the inner constraint unit 11, so that it contacts the first disc spring limiting unit 13 and the second disc spring limiting unit 14. At this time, the anchor plate 21 is inserted on the first connector 3 and contacts the inner constraint unit 11 and the outer constraint unit 12 respectively, and the outer baffle 23 contacts the inner constraint unit 11.

[0038] S3, the second connector 4 is welded between the extended ends of the two steel plates 121.

[0039] Working principle of the invention:

[0040] like Figure 5 As shown, during the loading stage: when the support is under tension, the outer constraint unit 12 moves downward and the inner constraint unit 11 moves upward. The inner constraint unit 11 pushes the anchor plate 21 upward. The outer baffle 23 moves upward under the traction force of the reset rib 26 anchored to the anchor plate 21. At the same time, the second disc spring limiting unit 14 welded to the outer constraint unit 12 presses the inner baffle 22 downward. Under the action of the opposing movement of the inner baffle 22 and the outer baffle 23, the disc spring 24 is compressed. Since the outer baffle 23 is limited by the second disc spring limiting unit 14 and the disc spring 24 during the movement of the anchor plate 21, the reset rib 26 anchored between the outer baffle 23 and the anchor plate 21 is stretched. Correspondingly, as Figure 6As shown, when the support is compressed, the outer constraint unit 12 moves upward and the inner constraint unit 11 moves downward. The outer constraint unit 12 pushes the anchor plate 21 to move upward, and the outer baffle 23 moves upward under the traction force of the reset rib 26 anchored to the anchor plate 21. At the same time, the first disc spring limiting unit 13 welded to the inner constraint unit 11 presses the inner baffle 22 downward. Under the action of the opposing movement of the inner baffle 22 and the outer baffle 23, the disc spring 24 is compressed. Since the outer baffle 23 is limited by the first disc spring limiting unit 13 and the disc spring 24 during the movement of the anchor plate 21, the reset rib 26 anchored between the outer baffle 23 and the anchor plate 21 is stretched.

[0041] When the support is in the unloading stage, the inner baffle 22 pushes the inner constraint unit 11 to move under the contact action of the first disc spring limiting unit 13, and the anchor plate 21 pushes the outer constraint unit 12 to move under the contact action of the outer constraint unit 12. Alternatively, the inner baffle 22 pushes the outer constraint unit 12 to move under the contact action of the second disc spring limiting unit 14, and the anchor plate 21 pushes the inner constraint unit 11 to move under the contact action of the inner constraint unit 11. During the unloading process, the residual deformation under cyclic loading can be effectively reduced under the restoring force of the self-resetting system.

[0042] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0043] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A displacement-amplified self-resetting frictional energy-dissipating support, characterized in that, include: A friction energy dissipation device, comprising an inner constraint unit and an outer constraint unit, wherein the inner constraint unit and the outer constraint unit are distributed at intervals from the inside out and connected together; The self-resetting device includes a first disc spring limiting unit, a second disc spring limiting unit, an anchor plate, an inner baffle, an outer baffle, a disc spring, a guide screw, and four reset ribs. The first disc spring limiting unit is fixed to the inner wall of the inner constraint unit; the second disc spring limiting unit passes through the inner constraint unit and is fixedly connected to the outer constraint unit; the anchor plate, the inner baffle, and the outer baffle are distributed sequentially from top to bottom, wherein the anchor plate is located at the top of the inner and outer constraint units, the outer baffle is located at the bottom of the inner constraint unit, and the inner baffle is located inside the inner constraint unit and contacts the first and second disc spring limiting units respectively; the disc spring is located between the inner baffle and the outer baffle; the guide screw passes through the disc spring and its two ends are anchored to the inner baffle and the outer baffle respectively; the four reset ribs all pass through the inner baffle and surround the disc spring, and the two ends of each reset rib are anchored to the anchor plate and the outer baffle respectively. The inner constraint unit includes two symmetrically distributed first welded steel plates and two symmetrically distributed second welded steel plates, which are welded together as one unit. A first disc spring limiting unit is welded to the inner wall of the second welded steel plate. Each of the two first welded steel plates has a through hole, through which the second disc spring limiting unit passes and is fixedly connected to the outer constraint unit. The tops of the two first welded steel plates are fixedly connected by a first connector. The anchor plate is inserted through the first connector. The external constraint unit includes two steel plates, multiple L-shaped friction plates, and multiple friction blocks. The two steel plates are respectively located outside the two first welded steel plates. The second disc spring limiting unit passes through the through hole and is fixedly connected to the steel plates. The multiple L-shaped friction plates are respectively located between the steel plates and the second welded steel plates, and each L-shaped friction plate is anchored to the second welded steel plate by a first bolt. The multiple friction blocks are respectively located on the multiple L-shaped friction plates, and each friction block is anchored to the steel plate by a second bolt, which passes through the L-shaped friction plate. The extended ends of the two steel plates are connected by a second connector. The second disc spring limiting unit includes a limiting steel plate and a welded steel block connected as one piece. The bottom plane of the limiting block of the limiting steel plate is on the same horizontal plane as the bottom plane of the first disc spring limiting unit. The welded steel block is welded to the steel plate through the through hole.

2. The displacement-enlarged self-resetting friction energy-dissipating support according to claim 1, characterized in that, The first connecting member includes a first T-shaped plate and two first stiffening ribs, and the tops of the two first welded steel plates are fixedly connected by the first T-shaped plate; the two first stiffening ribs are respectively fixed on the two sides of the first T-shaped plate; the second connecting member includes a second T-shaped plate, a plurality of angle steels and two second stiffening ribs, and the second T-shaped plate is fixed to the bottom of the steel plate by the plurality of angle steels; the two second stiffening ribs are respectively fixed on the two sides of the second T-shaped plate.

3. The assembly method of a displacement-enlarged self-resetting friction energy-dissipating support according to claim 2, characterized in that, Includes the following steps: S1, the first disc spring limiting unit is welded to the inner wall of the second welded steel plate, and its position is flush with the through hole of the first welded steel plate; the welded steel block of the second disc spring limiting unit is welded to the inner wall of the steel plate through the through hole; the two first welded steel plates and the two second welded steel plates are welded together to form an inner constraint unit, and the first connector is welded to the top of the two first welded steel plates; the first bolt is used to anchor the L-shaped friction plate to the surface of the second welded steel plate; the friction block is placed on the side of the L-shaped friction plate corresponding to the steel plate, and then the second bolt is passed through the holes and slots of the friction block and the L-shaped friction plate in sequence to anchor the friction block to the steel plate. Finally, the outer constraint unit is spaced out and wrapped around the inner constraint unit. S2, the guide screw passes through the disc spring and is anchored at both ends to the inner baffle and the outer baffle respectively; the reset rib passes through the pre-made holes of the inner baffle, the outer baffle and the anchor plate, and is anchored to the outer baffle and the anchor plate respectively; then the inner baffle is placed in the inner constraint unit so that it contacts the first disc spring limiting unit and the second disc spring limiting unit. At this time, the anchor plate is inserted on the first connector and contacts the inner constraint unit and the outer constraint unit respectively, and the outer baffle contacts the inner constraint unit. S3, weld the second connector between the two extended ends of the steel plates.

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