Multi - stage buckling - restrained energy - dissipating bracing device

Abstract

The present invention provides a multi-stage buckling-restrained energy dissipation bracing device, which relates to the technical field of structural engineering. It aims to solve the problem that the existing buckling-restrained energy dissipation bracing device cannot adaptively provide the required bearing capacity and energy dissipation demand when the main structure encounters external excitations of different levels. The device includes a first support, a second support, an energy dissipation unit, and a restraint unit. The restraint unit includes a first sliding plate, a second sliding plate, a first connection assembly, and a second connection assembly. The energy dissipation unit includes a first core plate and a plurality of high-order core plates. The first sliding plate fixedly connects the first core plate to the first support, and the second sliding plate fixedly connects the first core plate to the second support. The two ends of the high-order core plates are spaced from the first support and the second support respectively to form an adjustable gap. A first long hole is formed at the first end of the high-order core plate, and a second long hole is formed at the second end of the high-order core plate. The present invention can adaptively provide the required bearing capacity and energy dissipation demand when encountering external excitations of different levels.

Description

Technical Field

[0001] The present invention relates to the technical field of structural engineering, and more particularly, to a multi-stage buckling-restrained energy dissipation bracing device. Background Art

[0002] Earthquakes are inevitable natural disasters. The casualties and economic losses caused by earthquakes mainly result from excessive deformation or collapse of building structures. To control the dynamic response of building structures under earthquake actions, a passive control technology that combines safety, reliability, and economy has been proposed in the construction field. The passive control technology mainly adopts two methods: energy dissipation and seismic isolation. Among them, the energy dissipation method is to dissipate the energy introduced by earthquake actions when the structure deforms by setting energy dissipation components or devices, so as to protect the main structure from being damaged under earthquake actions.

[0003] Currently, the buckling-restrained energy dissipation bracing device is a commonly used energy dissipation and seismic isolation device, which has the advantages of simple structure, good ductility performance, and stable energy dissipation performance. The buckling-restrained energy dissipation bracing device usually consists of an energy dissipation core plate and a restraint unit. When the structure is subjected to a certain external force, all the loads borne by the device are borne by the energy dissipation core plate, and the restraint unit only restrains the compressive buckling of the energy dissipation core plate, so that the energy dissipation core plate can enter the yield state under both tensile and compressive actions, thereby dissipating energy through the yield of the energy dissipation core plate. It is applicable to both new buildings and seismic reinforcement.

[0004] However, the existing buckling-restrained energy dissipation bracing device remains elastic before the energy dissipation core plate yields and has a constant bearing capacity after the energy dissipation core plate yields, and cannot adaptively provide the required bearing capacity and energy dissipation demand when the main structure encounters external excitations of different levels. Moreover, after the buckling-restrained energy dissipation bracing device yields, it needs to be replaced as a whole, resulting in a high cost. Summary of the Invention

[0005] The purpose of the present invention is to provide a multi-stage buckling-restrained energy dissipation bracing device to solve the technical problem that the existing buckling-restrained energy dissipation bracing device cannot adaptively provide the required bearing capacity and energy dissipation demand when the main structure encounters external excitations of different levels.

[0006] The multi-stage buckling-restrained energy dissipation bracing device provided by the present invention includes a first support and a second support arranged at intervals along a first direction, and an energy dissipation unit and a restraint unit located between the first support and the second support for restraining the compressive buckling of the energy dissipation unit;

[0007] The constraint unit includes a first sliding plate, a second sliding plate, a first connection component, and a second connection component. The energy dissipation unit includes a first core plate and a plurality of high-order core plates arranged side by side with the first core plate. The first sliding plate fixedly connects the first end of the first core plate to the first support, and the second sliding plate fixedly connects the second end of the first core plate to the second support. The two ends of the high-order core plates are respectively spaced from the first support and the second support to form an adjustable gap between the first support and the second support. A first long hole is formed at the first end of the high-order core plate, and a second long hole is formed at the second end of the high-order core plate. Both the first long hole and the second long hole extend along the first direction. The first sliding plate is provided with a first connection hole opposite to the first long hole, and the first connection component passes through the first connection hole and the first long hole. The second sliding plate is provided with a second connection hole opposite to the second long hole, and the second connection component passes through the second connection hole and the second long hole. At least one of the plurality of high-order core plates has an adjustable gap.

[0008] Further, the number of the high-order core plates is two, namely a second core plate and a third core plate. The second core plate and the third core plate are respectively arranged on both sides of the first core plate along the second direction, and the first core plate, the second core plate, and the third core plate are arranged side by side. The adjustable gap formed between the second core plate and the corresponding support is different from the adjustable gap formed between the third core plate and the corresponding support. The second direction is perpendicular to the first direction.

[0009] Further, the constraint unit further includes a lateral constraint plate arranged on the side of the energy dissipation unit. The lateral constraint plate is provided with a first limiting groove at the part adjacent to the energy dissipation unit of the first support and a second limiting groove at the part adjacent to the energy dissipation unit of the second support. The first sliding plate is received in the first limiting groove, and the second sliding plate is received in the second limiting groove. Wherein, along the first direction, the sliding distance of the first sliding plate in the first limiting groove and the sliding distance of the second sliding plate in the second limiting groove are both greater than the sliding distance of the first connection component in the first long hole and the sliding distance of the second connection component in the second long hole. The lateral constraint plate and the energy dissipation unit are arranged in the third direction, and the third direction is perpendicular to both the first direction and the second direction.

[0010] Further, the constraint unit further includes a third connection component and a fourth connection component. One end of the lateral constraint plate is provided with a first safety hole extending along the first direction, and the first support is provided with a first support hole opposite to the first safety hole. The third connection component passes through the first support hole and the first safety hole. Along the first direction, the sliding stroke of the third connection component in the first safety hole is greater than the sliding stroke of the first connection component in the first long hole and the sliding stroke of the second connection component in the second long hole. The other end of the lateral constraint plate is provided with a second safety hole extending along the first direction, and the second support is provided with a second connection hole opposite to the second safety hole. The fourth connection component passes through the second connection hole and the second safety hole. Along the first direction, the sliding stroke of the fourth connection component in the second safety hole is greater than the sliding stroke of the first connection component in the first long hole and the sliding stroke of the second connection component in the second long hole.

[0011] Further, the first core plate includes a first necking section and first connection sections arranged at both ends of the first necking section. The first connection sections are used for connecting with the first support and the second support. The second core plate includes a second necking section and second connection sections arranged at both ends of the second necking section. The second connection sections are used for connecting with the first support and the second support. The third core plate includes a third necking section and third connection sections arranged at both ends of the third necking section. The third connection sections are used for connecting with the first support and the second support. Wherein, a first constraint space is formed between the first necking section and the second necking section, and a second constraint space is formed between the first necking section and the third necking section. The constraint unit further includes a first intermediate constraint plate and a second intermediate constraint plate. The first intermediate constraint plate is located in the first constraint space, and the second intermediate constraint plate is located in the second constraint space. Both the first intermediate constraint plate and the second intermediate constraint plate are fixedly connected to the lateral constraint plate.

[0012] Further, along the third direction, the sizes of both the first intermediate constraint plate and the second intermediate constraint plate are 0.5 - 3 mm larger than the size of the energy dissipation unit.

[0013] Further, the constraint unit further includes a top constraint plate and a bottom constraint plate. The top constraint plate and the bottom constraint plate are respectively arranged on both sides of the energy dissipation unit along the third direction and are in contact with the energy dissipation unit. Both the top constraint plate and the bottom constraint plate are fixedly connected to the lateral constraint plate.

[0014] Further, the cross-sections of the top restraint plate and the bottom restraint plate are both T-shaped. Among them, the vertical section of the T-shape abuts against the energy dissipation unit, and the horizontal section of the T-shape is fixedly connected to the lateral restraint plate; and / or, the cross-section of the lateral restraint plate is [shaped, and the vertical section of the [shape is connected to the first support, the energy dissipation unit and the second support, and the horizontal section of the [shape is fixedly connected to the top restraint plate and the bottom restraint plate.

[0015] Further, the number of the lateral restraint plates is two, and the two lateral restraint plates are respectively arranged on both sides of the energy dissipation unit along the third direction.

[0016] Further, the first support includes a first connecting plate and a plurality of first rib plates arranged on the first connecting plate, and the first connecting plate is used for connecting with the energy dissipation unit; and / or, the second support includes a second connecting plate and a plurality of second rib plates arranged on the second connecting plate, and the second connecting plate is used for connecting with the energy dissipation unit; and / or, the energy dissipation unit is detachably connected to the first support, the second support and the restraint unit.

[0017] The beneficial effects brought by the multi-stage buckling restraint energy dissipation support device of the present invention are as follows:

[0018] By providing a multi-stage buckling restraint energy dissipation support device mainly composed of an energy dissipation unit, a first support, a second support and a restraint unit, when the axial loads received by the first support and the second support change, causing relative displacement of the first support and the second support along the first direction, the load will be transmitted to the first core plate through the first sliding plate and the second sliding plate, causing the first core plate to yield; since there are gaps between the two ends of the high-order core plate and the first support and the second support, the high-order core plate will not be in contact with the first support and the second support during the initial stage of relative sliding of the first support and the second support, and the first connection assembly will not be in contact with the hole wall of the first long hole, and the second connection assembly will not be in contact with the hole wall of the second long hole. Therefore, the high-order core plate does not participate in the work during the initial stage.

[0019] The following takes the number of high-order core plates being two and the two high-order core plates having different adjustable gaps as an example for illustration. When the yield deformation of the first core plate causes the first support and the second support to come into contact with the high-order core plate with a smaller adjustable gap, or the first connection assembly connected to the high-order core plate moves with the first sliding plate to come into contact with the hole wall of the corresponding first long hole, and the second connection assembly connected to the high-order core plate moves with the second sliding plate to come into contact with the hole wall of the corresponding second long hole, the high-order core plate with a smaller adjustable gap will undergo yield deformation. That is to say, at this stage, the first core plate and the high-order core plate will jointly deform to dissipate energy.

[0020] When the yield deformation of the first core plate and the above-mentioned high-order core plates causes the first support and the second support to come into contact with the high-order core plates with a larger adjustable gap, or the first connection assembly connected to the high-order core plate moves with the first sliding plate to come into contact with the hole wall of the corresponding first long hole, and the second connection assembly connected to the high-order core plate moves with the second sliding plate to come into contact with the hole wall of the corresponding second long hole, the high-order core plate with a larger adjustable gap will undergo yield deformation. That is to say, at this stage, the first core plate and multiple high-order core plates deform together to dissipate energy. Thus, the adaptive regulation of different bearing capacities and energy dissipation performances of the energy dissipation unit is realized, so that the multi-stage buckling-restrained energy dissipation bracing device can adaptively provide the required bearing capacity and energy dissipation demand when the main structure encounters external excitations of different levels.

[0021] It can be seen that the multi-stage buckling-restrained energy dissipation bracing device can flexibly regulate the bearing capacity and energy dissipation capacity of the whole device in the initial stage by adjusting the mechanical property characteristics of the first core plate, so that it has multi-stage energy dissipation capacity and meets the different bearing capacity and energy dissipation demands when the main structure encounters external excitations of different levels. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to the provided drawings.

[0023] Figure 1 The three-dimensional structure diagram of the multi-stage buckling-restrained energy dissipation bracing device provided by the embodiment of the present invention;

[0024] Figure 2 One of the structural decomposition diagrams of the multi-stage buckling-restrained energy dissipation bracing device provided by the embodiment of the present invention;

[0025] Figure 3 Another structural decomposition diagram of the multi-stage buckling-restrained energy dissipation bracing device provided by the embodiment of the present invention;

[0026] Figure 4 The structural top view of the multi-stage buckling-restrained energy dissipation bracing device provided by the embodiment of the present invention;

[0027] Figure 5 The structural front view of the multi-stage buckling-restrained energy dissipation bracing device provided by the embodiment of the present invention;

[0028] Figure 6 The partial structural front view of the multi-stage buckling-restrained energy dissipation bracing device provided by the embodiment of the present invention;

[0029] Figure 7 The front view of the partial structure of the multi-stage buckling-restrained energy dissipation brace device provided by the embodiment of the present invention when only the first core plate undergoes buckling deformation in the initial stage;

[0030] Figure 8 The front view of the partial structure of the multi-stage buckling-restrained energy dissipation brace device provided by the embodiment of the present invention when the first core plate, the second core plate, and the third core plate all undergo buckling deformation in the subsequent stage;

[0031] Figure 9 The enlarged view of the partial structure of the multi-stage buckling-restrained energy dissipation brace device provided by the embodiment of the present invention;

[0032] Figure 10 The schematic diagram of the load-displacement relationship of the multi-stage buckling-restrained energy dissipation brace device provided by the embodiment of the present invention when the adjustable clearances formed between the second core plate and the third core plate and the corresponding supports are different;

[0033] Figure 11 The schematic diagram of the load-displacement relationship of the multi-stage buckling-restrained energy dissipation brace device provided by the embodiment of the present invention when the adjustable clearances formed between the second core plate and the third core plate and the corresponding supports are the same;

[0034] Figure 12 The schematic diagram of the first step of replacing the energy dissipation core plate of the multi-stage buckling-restrained energy dissipation brace device provided by the embodiment of the present invention;

[0035] Figure 13 The schematic diagram of the second step of replacing the energy dissipation core plate of the multi-stage buckling-restrained energy dissipation brace device provided by the embodiment of the present invention;

[0036] Figure 14 The schematic diagram of the third step of replacing the energy dissipation core plate of the multi-stage buckling-restrained energy dissipation brace device provided by the embodiment of the present invention;

[0037] Figure 15 The schematic diagram of the fourth step of replacing the energy dissipation core plate of the multi-stage buckling-restrained energy dissipation brace device provided by the embodiment of the present invention;

[0038] Figure 16 The schematic diagram of the fifth step of replacing the energy dissipation core plate of the multi-stage buckling-restrained energy dissipation brace device provided by the embodiment of the present invention;

[0039] Figure 17 The schematic diagram of the sixth step of replacing the energy dissipation core plate of the multi-stage buckling-restrained energy dissipation brace device provided by the embodiment of the present invention.

[0040] Explanation of reference numerals:

[0041] 100 - First support; 110 - First connecting plate; 111 - First support hole; 120 - First rib plate; 200 - Second support; 210 - Second connecting plate; 211 - Second support hole; 220 - Second rib plate; 300 - Energy dissipation unit; 400 - Constraint unit; 500 - Adjustable gap; 600 - First constraint space; 700 - Second constraint space; 810 - Fifth connecting component; 820 - Sixth connecting component; 830 - Seventh connecting component; 840 - Eighth connecting component; 850 - Core plate connecting component; 860 - Ninth connecting component; 870 - Tenth connecting component;

[0042] 310 - First core plate; 311 - First necking section; 312 - First connecting section; 320 - Second core plate; 321 - Second necking section; 322 - Second connecting section; 330 - Third core plate; 331 - Third necking section; 332 - Third connecting section; 340 - First long hole; 350 - Second long hole;

[0043] 410 - First sliding plate; 411 - First connecting hole; 420 - Second sliding plate; 421 - Second connecting hole; 431 - First connecting component; 432 - Second connecting component; 440 - Lateral constraint plate; 441 - First limiting groove; 442 - Second limiting groove; 443 - First safety hole; 444 - Second safety hole; 451 - Third connecting component; 452 - Fourth connecting component; 460 - First intermediate constraint plate; 470 - Second intermediate constraint plate; 480 - Top constraint plate; 490 - Bottom constraint plate. Detailed implementation mode

[0044] To make the above - mentioned objects, features, and advantages of the present invention more obvious and understandable, the following will describe in detail the specific embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0045] Figure 1 This is the three - dimensional structure diagram of the multi - order buckling - restrained energy - dissipating bracing device provided in this embodiment. As Figure 1 shown, this embodiment provides a multi - order buckling - restrained energy - dissipating bracing device, including a first support 100 and a second support 200 arranged at intervals along the first direction, and an energy dissipation unit 300 located between the first support 100 and the second support 200, and a constraint unit 400 for restraining the compression buckling of the energy dissipation unit 300.

[0046] Figure 2 This is one of the structural decomposition diagrams of the multi - order buckling - restrained energy - dissipating bracing device provided in this embodiment; Figure 3 This is the other structural decomposition diagram of the multi - order buckling - restrained energy - dissipating bracing device provided in this embodiment; Figure 4The structural top view of the multi-stage buckling-restrained energy dissipation bracing device provided in this embodiment; Figure 5 The structural front view of the multi-stage buckling-restrained energy dissipation bracing device provided in this embodiment.

[0047] Please continue to refer to Figure 1 and in combination with Figures 2 to 5 In this embodiment, the restraint unit 400 may include a first sliding plate 410, a second sliding plate 420, a first connection assembly 431, and a second connection assembly 432. The energy dissipation unit 300 includes a first core plate 310 and a plurality of high-order core plates arranged side by side with the first core plate 310. The first sliding plate 410 fixedly connects the first end of the first core plate 310 to the first support 100, and the second sliding plate 420 fixedly connects the second end of the first core plate 310 to the second support 200; both ends of the high-order core plates are spaced apart from the first support 100 and the second support 200 respectively, so as to form an adjustable gap 500 between the first support 100 and the second support 200. A first long hole 340 is formed at the first end of the high-order core plate, and a second long hole 350 is formed at the second end of the high-order core plate. Both the first long hole 340 and the second long hole 350 extend along the first direction; the first sliding plate 410 is provided with a first connection hole 411 opposite to the first long hole 340, the first connection assembly 431 passes through the first connection hole 411 and the first long hole 340, the second sliding plate 420 is provided with a second connection hole 421 opposite to the second long hole 350, and the second connection assembly 432 passes through the second connection hole 421 and the second long hole 350; at least one of the plurality of high-order core plates has an adjustable gap 500.

[0048] It should be noted that in this embodiment, the "first direction" mentioned above can be represented by the arrow ab in Figures 1 to 3 , and the "second direction" involved below can be represented by the arrow cd in Figures 1 to 3 , and the "third direction" can be represented by the arrow ef in Figures 1 to 3 .

[0049] Figure 6 The partial structural front view of the multi-stage buckling-restrained energy dissipation bracing device provided in this embodiment. Please continue to refer to Figure 1 and Figure 2 and in combination with Figure 6 In this embodiment, the number of high-order core plates is two, namely the second core plate 320 and the third core plate 330. Among them, the adjustable gap 500 formed between the second core plate 320 and the corresponding support is different from the adjustable gap 500 formed between the third core plate 330 and the corresponding support.

[0050] Figure 7 The partial structural front view of the multi-stage buckling-restrained energy dissipation bracing device provided in this embodiment where only the first core plate 310 undergoes buckling deformation at the initial stage. As shown in Figure 7As shown, when the axial loads on the first support 100 and the second support 200 change, causing relative displacement in the first direction between the first support 100 and the second support 200, the load will be transferred to the first core plate 310 through the first sliding plate 410 and the second sliding plate 420, causing the first core plate 310 to yield. Since there are gaps at both ends of the second core plate 320 and the third core plate 330 from the first support 100 and the second support 200, the second core plate 320 and the third core plate 330 will not be in contact with the first support 100 and the second support 200 during the initial stage of relative sliding between the first support 100 and the second support 200. Also, the first connection assembly 431 will not be in contact with the wall of the first long hole 340, and the second connection assembly 432 will not be in contact with the wall of the second long hole 350. Therefore, the second core plate 320 and the third core plate 330 do not participate in the work during the initial stage.

[0051] Figure 8 This is the front view of the local structure where the first core plate 310, the second core plate 320, and the third core plate 330 all undergo buckling deformation in the subsequent stage of the multi-stage buckling-restrained energy dissipation bracing device provided in this embodiment. When the yield deformation of the first core plate 310 causes the first support 100 and the second support 200 to come into contact with the higher-order core plate with a smaller adjustable gap 500, or the first connection assembly 431 connected to this higher-order core plate moves with the first sliding plate 410 to come into contact with the wall of the corresponding first long hole 340, and the second connection assembly 432 connected to this higher-order core plate moves with the second sliding plate 420 to come into contact with the wall of the corresponding second long hole 350, the higher-order core plate with a smaller adjustable gap 500 will undergo yield deformation. That is to say, in this stage, the first core plate 310 and this higher-order core plate jointly deform to dissipate energy.

[0052] When the yield deformation of the first core plate 310 and the above-mentioned higher-order core plate causes the first support 100 and the second support 200 to come into contact with the higher-order core plate with a larger adjustable gap 500, or the first connection assembly 431 connected to this higher-order core plate moves with the first sliding plate 410 to come into contact with the wall of the corresponding first long hole 340, and the second connection assembly 432 connected to this higher-order core plate moves with the second sliding plate 420 to come into contact with the wall of the corresponding second long hole 350, the higher-order core plate with a larger adjustable gap 500 will undergo yield deformation. That is to say, in this stage, the first core plate 310 and multiple higher-order core plates jointly deform to dissipate energy. Thus, adaptive regulation of the different bearing capacities and energy dissipation performances of the energy dissipation unit 300 is achieved, so that the multi-stage buckling-restrained energy dissipation bracing device can adaptively provide the required bearing capacity and energy dissipation demand when the main structure encounters external excitations of different levels.

[0053] It can be seen that the multi-stage buckling-restrained energy dissipation bracing device can flexibly regulate the bearing capacity and energy dissipation capacity of the overall device in the initial stage by adjusting the mechanical property characteristics of the first core plate 310, so that it has multi-stage energy dissipation capacity, meeting the different bearing capacity and energy dissipation requirements of the main structure when encountering external excitations of different levels.

[0054] In addition, in this application, by arranging the first core plate 310 and the high-order core plates side by side, there is a length overlapping area between the first core plate 310 and the high-order core plates in the first direction. When the multi-stage buckling-restrained energy dissipation bracing device works, the overall device will not lose its energy dissipation function due to the fracture of a certain energy dissipation core plate, thus improving the adaptability and safety reserve of the multi-stage buckling-restrained energy dissipation bracing device in this embodiment under strong earthquake action, and ensuring that the device can still work normally after the failure of a single energy dissipation core plate.

[0055] Moreover, this form of parallel arrangement of the first core plate 310 and the high-order core plates in this application can achieve different deformations through the bracing action to sequentially activate different energy dissipation core plates to play their roles, so as to achieve the purpose of multi-stage yielding. Among them, the adjustable parameters include the strength of the energy dissipation core plate, the cross-sectional area of the energy dissipation core plate, and the deformation conditions for activating the high-order core plates, etc. Compared with the prior art scheme in which multiple energy dissipation core plates are connected in series and only the strength and cross-sectional area of the energy dissipation core plates can be adjusted, it is more convenient for structural design. And this setting can also reduce the space occupation in the first direction and is applicable to building structures with limited space.

[0056] In addition, this form of parallel arrangement of the first core plate 310 and the high-order core plates makes the axial bearing capacity of the multi-stage buckling-restrained energy dissipation bracing device the sum of the bearing capacities of all core plates. Compared with the prior art scheme in which multiple energy dissipation core plates are connected in series and the axial bearing capacity is only the maximum bearing capacity of a single energy dissipation core plate, the bearing capacity of this scheme can be significantly improved according to the design requirements.

[0057] Figure 9 It is a partial structure enlarged view of the multi-stage buckling-restrained energy dissipation bracing device provided in this embodiment. As Figure 9 shown, the adjustable gap 500 between the second core plate 320 and the first support 100 is denoted as δ1, the distance between the first connection component 431 passing through the first long hole 340 of the second core plate 320 and the hole wall of the first long hole 340 is denoted as δ2, the adjustable gap 500 between the third core plate 330 and the first support 100 is denoted as δ3, and the distance between the first connection component 431 passing through the first long hole 340 of the third core plate 330 and the hole wall of the first long hole 340 is denoted as δ4. Among them, δ1 = δ2, δ3 = δ4.

[0058] The above "the adjustable gap 500 formed between the second core plate 320 and the corresponding support is different from the adjustable gap 500 formed between the third core plate 330 and the corresponding support" means: δ1≠δ3. Taking δ1<δ3 as an example, the multi-stage buckling-restrained energy dissipation bracing device adaptively provides multi-level bearing capacity and energy dissipation capacity at different earthquake levels when adopting three-stage energy dissipation, and the specific working mechanism is as follows.

[0059] Figure 10 It is a schematic diagram of the load-displacement relationship of the multi-stage buckling-restrained energy dissipation bracing device provided in this embodiment when the adjustable gaps 500 formed between the second core plate 320 and the third core plate 330 and the corresponding supports are different. As Figure 10 shown, under small earthquakes or wind loads: the inter-story deformation of the structure is small, the axial deformation of the bracing is less than 2 times of δ1, neither the second core plate 320 nor the third core plate 330 contacts the first support 100 and the second support 200, and the energy dissipation effect of the multi-stage buckling-restrained energy dissipation bracing device is only provided by the first core plate 310. At this time, the maximum bearing capacity is F1.

[0060] Under medium earthquakes: the inter-story deformation of the structure increases slightly compared with that under small earthquakes, the axial deformation of the bracing is still less than 2 times of δ1, and neither end of the second core plate 320 and the third core plate 330 contacts the first support 100 and the second support 200. The energy dissipation effect of the multi-stage buckling-restrained energy dissipation bracing device is still provided by the first core plate 310. At this time, the maximum bearing capacity is F1.

[0061] Under large earthquakes: the inter-story deformation of the structure increases significantly compared with that under medium earthquakes, the axial deformation of the bracing is greater than 2 times of δ1 and less than 2 times of δ2, and both ends of the second core plate 320 contact the first support 100 and the second support 200 respectively. The energy dissipation effect of the multi-stage buckling-restrained energy dissipation bracing device is provided by the first core plate 310 and the second core plate 320 together. At this time, the maximum bearing capacity is F2.

[0062] Under extremely large earthquakes: the inter-story deformation of the structure increases significantly compared with that under large earthquakes, the axial deformation of the bracing is greater than 2 times of δ2, and both ends of both the second core plate 320 and the third core plate 330 contact the first support 100 and the second support 200 respectively. The energy dissipation effect of the multi-stage buckling-restrained energy dissipation bracing device is provided by the first core plate 310, the second core plate 320 and the third core plate 330 together. At this time, the maximum bearing capacity is F3.

[0063] It can be understood that in other embodiments, the adjustable gap 500 formed between the second core plate 320 and the corresponding support can also be set to be the same as the adjustable gap 500 formed between the third core plate 330 and the corresponding support. Specifically, Figure 9Among them, that is, δ1 = δ2 = δ3 = δ4. At this time, when the multi-stage buckling restraint energy dissipation bracing device adopts two-stage energy dissipation, it adaptively provides multi-stage bearing capacity and energy dissipation capacity under different earthquake levels. The specific working mechanism is as follows.

[0064] Figure 11 It is a schematic diagram of the load-displacement relationship when the adjustable gap 500 formed between the second core plate 320 and the third core plate 330 and the corresponding supports of the multi-stage buckling restraint energy dissipation bracing device provided in this embodiment is the same. As Figure 11 shown, under small earthquake or wind load: the inter-story deformation of the structure is small, the axial deformation of the bracing is less than 2 times of δ1, neither the second core plate 320 nor the third core plate 330 contacts the first support 100 and the second support 200, and the energy dissipation effect of the multi-stage buckling restraint energy dissipation bracing device is only provided by the first core plate 310. At this time, the maximum bearing capacity is F1.

[0065] Under medium earthquake: the inter-story deformation of the structure increases slightly compared with that under small earthquake, the axial deformation of the bracing is still less than 2 times of δ1, and the two ends of the second core plate 320 and the third core plate 330 still do not contact the first support 100 and the second support 200. The energy dissipation effect of the multi-stage buckling restraint energy dissipation bracing device is still provided by the first core plate 310. At this time, the maximum bearing capacity is F1.

[0066] Under large earthquake: the inter-story deformation of the structure increases significantly compared with that under medium earthquake, the axial deformation of the bracing is greater than 2 times of δ1, and the two ends of both the second core plate 320 and the third core plate 330 contact the first support 100 and the second support 200 respectively. The energy dissipation effect of the multi-stage buckling restraint energy dissipation bracing device is provided jointly by the first core plate 310, the second core plate 320 and the third core plate 330. At this time, the maximum bearing capacity is F2.

[0067] It can be seen that the multi-stage buckling restraint energy dissipation bracing device can realize the characteristics of multiple staged energy dissipation by flexibly designing the lengths of the first long holes 340 and the second long holes 350 opened on the second core plate 320 and the third core plate 330, as well as the size of the adjustable gap 500 between the first support 100 and the second support 200, so as to adaptively provide variable stiffness, bearing capacity and energy dissipation capacity under different deformation levels.

[0068] Please continue to refer to Figure 2 、 Figure 3 and Figure 6 . In this embodiment, the second core plate 320 and the third core plate 330 are respectively arranged on both sides of the first core plate 310 along the second direction, and the first core plate 310, the second core plate 320 and the third core plate 330 are arranged side by side.

[0069] The above arrangement of the first core plate 310, the second core plate 320, and the third core plate 330 enables the first core plate 310 that starts buckling deformation in the initial stage to be located in the middle of the energy dissipation unit 300, while the second core plate 320 and the third core plate 330 that start buckling deformation in the subsequent stage are located on both sides. This not only effectively constrains both sides of the first core plate 310 along the second direction, but also ensures the uniformity of the energy dissipation unit 300 during the load-bearing process.

[0070] Please continue to refer to Figure 2 and Figure 3 In this embodiment, the constraint unit 400 may further include a constraint plate disposed on the side of the energy dissipation unit 300. Specifically, the side constraint plate 440 is provided with a first limit groove 441 at the part adjacent to the first support 100 and the energy dissipation unit 300, and a second limit groove 442 at the part adjacent to the second support 200 and the energy dissipation unit 300; the first sliding plate 410 is received in the first limit groove 441, and the second sliding plate 420 is received in the second limit groove 442; wherein, along the first direction, the sliding distance of the first sliding plate 410 in the first limit groove 441 and the sliding distance of the second sliding plate 420 in the second limit groove 442 are both greater than the sliding distance of the first connection component 431 in the first long hole 340 and the sliding distance of the second connection component 432 in the second long hole 350; the side constraint plate 440 and the energy dissipation unit 300 are arranged along the third direction, and the third direction is perpendicular to both the first direction and the second direction.

[0071] The above arrangement of the side constraint plate 440 can constrain the buckling deformation of the energy dissipation unit 300 along the third direction. Among them, by providing the first limit groove 441 for receiving the first sliding plate 410 and the second limit groove 442 for receiving the second sliding plate 420 on the side constraint plate 440, it can also prevent interference between the first sliding plate 410 and the second sliding plate 420 and the side constraint plate 440 during the buckling deformation of the energy dissipation unit 300. At the same time, it can also utilize the sliding action of the first sliding plate 410 in the first limit groove 441 and the sliding action of the second sliding plate 420 in the second limit groove 442 to guide the movement process of the first sliding plate 410 and the second sliding plate 420, and prevent the first sliding plate 410 and the second sliding plate 420 from moving along the second direction.

[0072] Please continue to refer to Figure 2 In this embodiment, the number of the side constraint plates 440 is two, and the two side constraint plates 440 are respectively disposed on both sides of the energy dissipation unit 300 along the third direction.

[0073] By providing side constraint plates 440 on both sides of the energy dissipation unit 300 along the third direction, a constraint effect can be formed on both sides of the energy dissipation unit 300 along the third direction, and the constraint effect is good.

[0074] Please continue to refer to Figure 2 , in this embodiment, the constraint unit 400 may further include a third connection component 451 and a fourth connection component 452. Specifically, one end of the lateral constraint plate 440 is provided with a first safety hole 443 extending in the first direction, and the first support 100 is provided with a first support hole 111 opposite to the first safety hole 443. The third connection component 451 passes through the first support hole 111 and the first safety hole 443, and along the first direction, the sliding stroke of the third connection component 451 in the first safety hole 443 is greater than the sliding stroke of the first connection component 431 in the first long hole 340 and the sliding stroke of the second connection component 432 in the second long hole 350; the other end of the lateral constraint plate 440 is provided with a second safety hole 444 extending in the first direction, and the second support 200 is provided with a second support hole 211 opposite to the second safety hole 444. The fourth connection component 452 passes through the second support hole 211 and the second safety hole 444, and along the first direction, the sliding stroke of the fourth connection component 452 in the second safety hole 444 is greater than the sliding stroke of the first connection component 431 in the first long hole 340 and the sliding stroke of the second connection component 432 in the second long hole 350.

[0075] By respectively arranging the first safety hole 443 and the second safety hole 444 at both ends of the lateral constraint plate 440, and enabling the third connection component 451 connected to the first support 100 to pass through the first safety hole 443 and the fourth connection component 452 connected to the second support 200 to pass through the second safety hole 444, when the multi-stage buckling constraint energy dissipation support device utilizes the buckling deformation of the energy dissipation unit 300 to dissipate energy, after the first connection component 431 moves to the maximum stroke in the first long hole 340 and the second connection component 432 moves to the maximum stroke in the second long hole 350, as the energy dissipation unit 300 continues to deform, the first safety hole 443 and the second safety hole 444 can play a further limiting role to prevent the multi-stage buckling constraint energy dissipation support device from suffering support failure.

[0076] Please continue to refer to Figure 2, in this embodiment, the first core plate 310 may include a first necking section 311 and first connecting sections 312 disposed at both ends of the first necking section 311. The first connecting sections 312 are used to connect to the first support 100 and the second support 200. The second core plate 320 may include a second necking section 321 and second connecting sections 322 disposed at both ends of the second necking section 321. The second connecting sections 322 are used to connect to the first support 100 and the second support 200. The third core plate 330 may include a third necking section 331 and third connecting sections 332 disposed at both ends of the third necking section 331. The third connecting sections 332 are used to connect to the first support 100 and the second support 200. Among them, a first constraint space 600 is formed between the first necking section 311 and the second necking section 321, and a second constraint space 700 is formed between the first necking section 311 and the third necking section 331. The constraint unit 400 further includes a first intermediate constraint plate 460 and a second intermediate constraint plate 470. The first intermediate constraint plate 460 is located in the first constraint space 600, and the second intermediate constraint plate 470 is located in the second constraint space 700. Both the first intermediate constraint plate 460 and the second intermediate constraint plate 470 are fixedly connected to the lateral constraint plate 440.

[0077] By providing necking sections in the first core plate 310, the second core plate 320, and the third core plate 330, and disposing the first intermediate constraint plate 460 and the second intermediate constraint plate 470 in the space between the necking sections of any two adjacent core plates, it is possible to constrain the buckling deformation on both sides of the first core plate 310 along the second direction, as well as to constrain the downward buckling deformation of the second core plate 320 and the upward buckling deformation of the third core plate 330, ensuring the constraint effect on the energy dissipation unit 300.

[0078] Please continue to refer to Figure 2 , in this embodiment, arc chamfers are provided at the connecting parts of the first necking section 311, the second necking section 321, and the third necking section 331 with their corresponding connecting sections. This setting can effectively relieve the stress concentration between the necking section and the corresponding connecting section, so as to extend the service life of the energy dissipation unit 300.

[0079] Please continue to refer to Figure 2 , in this embodiment, along the first direction, the size of the first constraint space 600 is greater than the size of the first intermediate constraint plate 460, and the size of the second constraint space 700 is greater than the size of the second intermediate constraint plate 470. That is to say, the lengths of both the first necking section 311 and the second necking section 321 are greater than the length of the first intermediate constraint plate 460, and the lengths of both the first necking section 311 and the third necking section 331 are greater than the length of the second intermediate constraint plate 470. This setting provides a space margin for the buckling deformation of the energy dissipation unit 300 along the first direction.

[0080] In this embodiment, along the third direction, the sizes of the first intermediate constraint plate 460 and the second intermediate constraint plate 470 are each 0.5 - 3 mm larger than the size of the energy dissipation unit 300. That is to say, the thicknesses of both the first intermediate constraint plate 460 and the second intermediate constraint plate 470 are 0.5 - 3 mm larger than the thickness of the energy dissipation unit 300.

[0081] With the above arrangement, the projection profile of the energy dissipation unit 300 in the second direction can completely fall within the first intermediate constraint plate 460 and the second intermediate constraint plate 470, so that the deformation of the energy dissipation unit 300 in the second direction can be effectively constrained by the first intermediate constraint plate 460 and the second intermediate constraint plate 470. Among them, by setting the thicknesses of both the first intermediate constraint plate 460 and the second intermediate constraint plate 470 to be 0.5 - 3 mm larger than that of the energy dissipation unit 300, it can not only avoid the ineffective constraint caused by the too thin first intermediate constraint plate 460 and the second intermediate constraint plate 470, but also avoid the situation of material waste and the overall excessive thickness of the device due to the too thick first intermediate constraint plate 460 and the second intermediate constraint plate 470.

[0082] Please continue to refer to Figure 2 and Figure 3 , in this embodiment, the constraint unit 400 may further include a top constraint plate 480 and a bottom constraint plate 490. Specifically, the top constraint plate 480 and the bottom constraint plate 490 are respectively arranged on both sides of the energy dissipation unit 300 along the third direction and are in contact with the energy dissipation unit 300; both the top constraint plate 480 and the bottom constraint plate 490 are fixedly connected to the lateral constraint plate 440.

[0083] With the above arrangement of the top constraint plate 480 and the bottom constraint plate 490, the buckling deformation of the whole energy dissipation unit 300 along both sides in the third direction is constrained, which is beneficial to the buckling deformation of the energy dissipation unit 300 along the first direction.

[0084] Please continue to refer to Figure 2 and Figure 3 , in this embodiment, the cross-sections of both the top constraint plate 480 and the bottom constraint plate 490 are in a T shape. Among them, the vertical section of the T shape is in contact with the energy dissipation unit 300, and the horizontal section of the T shape is fixedly connected to the lateral constraint plate 440.

[0085] This structural form of the top constraint plate 480 and the bottom constraint plate 490 can not only exert an effective binding force on the energy dissipation unit 300 in the second direction, but also achieve a reliable connection with the lateral constraint plate 440.

[0086] Please continue to refer to Figure 2 and Figure 3, in this embodiment, the cross-section of the lateral restraint plate 440 is in the shape of [, and the vertical section of the [ shape is connected to the first support 100, the energy dissipation unit 300, and the second support 200, and the horizontal section of the [ shape is fixedly connected to the top restraint plate 480 and the bottom restraint plate 490.

[0087] This structural form of the lateral restraint plate 440 can not only exert an effective binding force on the energy dissipation unit 300 in the third direction, but also achieve reliable connection with the top restraint plate 480 and the lateral restraint plate 440.

[0088] Please continue to refer to Figure 2 and Figure 3 , in this embodiment, the first support 100 may include a first connecting plate 110 and a plurality of first rib plates 120 arranged on the first connecting plate 110, wherein the first connecting plate 110 is used for connecting with the energy dissipation unit 300.

[0089] This setting form of the first support 100 can not only achieve effective connection with one end of the energy dissipation unit 300, but also has relatively high structural strength.

[0090] Similarly, the second support 200 may include a second connecting plate 210 and a plurality of second rib plates 220 arranged on the second connecting plate 210, wherein the second connecting plate 210 is used for connecting with the energy dissipation unit 300.

[0091] This setting form of the second support 200 can not only achieve effective connection with the other end of the energy dissipation unit 300, but also has relatively high structural strength.

[0092] Please continue to refer to Figure 2 and Figure 3 , in this embodiment, the energy dissipation unit 300 is detachably connected to the first support 100, the second support 200, and the restraint unit 400.

[0093] By setting the energy dissipation unit 300 to be detachably connected to the first support 100, the second support 200, and the restraint unit 400, on the one hand, it enables the multi-stage buckling restraint energy dissipation support device to install an energy dissipation unit 300 with appropriate strength according to the use conditions to meet the use requirements under various conditions. On the other hand, it can also, after the energy dissipation unit 300 is damaged, achieve the maintenance of the multi-stage buckling restraint energy dissipation support device by only replacing the energy dissipation unit 300, without the need for overall replacement, greatly reducing the maintenance cost.

[0094] In the following text, the replacement process of the first core plate 310, the second core plate 320, and the third core plate 330 in the energy dissipation unit 300 will be specifically described.

[0095] Figure 12Schematic diagram of the first step for replacing the energy dissipation core plate of the multi-stage buckling-restrained energy dissipation bracing device provided in this embodiment. As Figure 12 shown, in the first step, the fifth connection assembly 810 for connecting the top restraint plate 480 and the lateral restraint plate 440 and the sixth connection assembly 820 for connecting the bottom restraint plate 490 and the lateral restraint plate 440 can be removed first to release the fixing effect on the top restraint plate 480 and the bottom restraint plate 490.

[0096] Figure 13 Schematic diagram of the second step for replacing the energy dissipation core plate of the multi-stage buckling-restrained energy dissipation bracing device provided in this embodiment. As Figure 13 shown, in the second step, the top restraint plate 480 and the bottom restraint plate 490 can be removed.

[0097] Figure 14 Schematic diagram of the third step for replacing the energy dissipation core plate of the multi-stage buckling-restrained energy dissipation bracing device provided in this embodiment. As Figure 14 shown, in the third step, the first connection assembly 431 connecting the first sliding plate 410 with the second core plate 320 and the third core plate 330, the second connection assembly 432 connecting the second sliding plate 420 with the second core plate 320 and the third core plate 330, the core plate connection assembly 850 connecting the first core plate 310 with the first sliding plate 410 and the second sliding plate 420, the seventh connection assembly 830 connecting the lateral restraint plate 440 with the first intermediate restraint plate 460, the eighth connection assembly 840 connecting the lateral restraint plate 440 with the second intermediate restraint plate 470, the ninth connection assembly 860 connecting the first sliding plate 410 with the first connection plate 110, and the tenth connection assembly 870 connecting the second sliding plate 420 with the second connection plate 210 can be removed to release the fixing effect on the first sliding plate 410, the second sliding plate 420, and the lateral restraint plate 440.

[0098] Figure 15 Schematic diagram of the fourth step for replacing the energy dissipation core plate of the multi-stage buckling-restrained energy dissipation bracing device provided in this embodiment. As Figure 15 shown, in the fourth step, the first sliding plate 410 and the second sliding plate 420 can be removed.

[0099] Figure 16 Schematic diagram of the fifth step for replacing the energy dissipation core plate of the multi-stage buckling-restrained energy dissipation bracing device provided in this embodiment. As Figure 16 shown, in the fifth step, the first core plate 310, the second core plate 320, and the first intermediate restraint plate 460 can be removed.

[0100] Figure 17 Schematic diagram of the sixth step for replacing the energy dissipation core plate of the multi-stage buckling-restrained energy dissipation bracing device provided in this embodiment. AsFigure 17 As shown, in the sixth step, the third core plate 330 and the second intermediate restraint plate 470 can be removed.

[0101] Thus, the disassembly of the first core plate 310, the second core plate 320, and the third core plate 330 in the energy-consuming unit 300 is achieved. Among them, the assembly process of the first core plate 310, the second core plate 320, and the third core plate 330 is opposite to the above disassembly process in sequence.

[0102] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the claims.

[0103] Finally, it should also be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article, or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article, or device comprising the said element.

[0104] In the above embodiments, the descriptions of orientations such as "inner" and "outer" are all based on the drawings shown.

[0105] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-order buckling restrained energy dissipation support device, characterized in that: It comprises a first support (100) and a second support (200) arranged at intervals along a first direction, an energy dissipation unit (300) located between the first support (100) and the second support (200), and a constraint unit (400) for constraining the energy dissipation unit (300) from buckling under compression; The constraint unit (400) comprises a first sliding plate (410), a second sliding plate (420), a first connecting component (431) and a second connecting component (432); the energy dissipation unit (300) comprises a first core plate (310) and a plurality of higher-order core plates arranged side by side with the first core plate (310); the first sliding plate (410) is fixedly connected to a first end of the first core plate (310) and the first support (100); the second sliding plate (420) is fixedly connected to a second end of the first core plate (310) and the second support (200); the two ends of the higher-order core plate are respectively spaced from the first support (100) and the second support (200) to form an adjustable gap (55) between the first support (100) and the second support (200). 00), a first long hole (340) is formed at the first end of the high-order core plate, a second long hole (350) is formed at the second end of the high-order core plate, and the first long hole (340) and the second long hole (350) both extend along the first direction; the first sliding plate (410) is formed with a first connecting hole (411) opposite to the first long hole (340), the first connecting component (431) passes through the first connecting hole (411) and the first long hole (340), the second sliding plate (420) is formed with a second connecting hole (421) opposite to the second long hole (350), the second connecting component (432) passes through the second connecting hole (421) and the second long hole (350); the plurality of high-order core plates have at least one adjustable gap (500); The number of the high-order core plates is two, namely a second core plate (320) and a third core plate (330); the second core plate (320) and the third core plate (330) are respectively arranged on both sides of the first core plate (310) along the second direction, and the first core plate (310), the second core plate (320) and the third core plate (330) are arranged side by side; the adjustable gap (500) formed between the second core plate (320) and the corresponding support is different from the adjustable gap (500) formed between the third core plate (330) and the corresponding support; the second direction is perpendicular to the first direction; The constraint unit (400) further comprises a lateral constraint plate (440) arranged on the side of the energy consumption unit (300); the lateral constraint plate (440) is provided with a first limiting groove (441) at a portion of the first support (100) adjacent to the energy consumption unit (300), and a second limiting groove (442) at a portion of the second support (200) adjacent to the energy consumption unit (300); the first sliding plate (410) is accommodated in the first limiting groove (441), and the second sliding plate (420) is accommodated in the second limiting groove (442); Wherein, along the first direction, a sliding distance of the first sliding plate (410) in the first limiting groove (441) and a sliding distance of the second sliding plate (420) in the second limiting groove (442) are both greater than a sliding distance of the first connecting component (431) in the first long hole (340) and a sliding distance of the second connecting component (432) in the second long hole (350); the lateral restraining plate (440) and the energy consumption unit (300) are arranged along a third direction, and the third direction is perpendicular to both the first direction and the second direction; The first core plate (310) comprises a first necking section (311) and a first connecting section (312) arranged at both ends of the first necking section (311), the first connecting section (312) being used to connect to the first support (100) and the second support (200); the second core plate (320) comprises a second necking section (321) and a second connecting section (322) arranged at both ends of the second necking section (321), the second connecting section (322) being used to connect to the first support (100) and the second support (200); the third core plate (330) comprises a third necking section (331) and a third connecting section (332) arranged at both ends of the third necking section (331), the third connecting section (332) being used to connect to the The first support (100) and the second support (200) are connected; wherein a first constraint space (600) is formed between the first necked section (311) and the second necked section (321), and a second constraint space (700) is formed between the first necked section (311) and the third necked section (331); the constraint unit (400) further comprises a first intermediate constraint plate (460) and a second intermediate constraint plate (470), wherein the first intermediate constraint plate (460) is located in the first constraint space (600), and the second intermediate constraint plate (470) is located in the second constraint space (700), and the first intermediate constraint plate (460) and the second intermediate constraint plate (470) are both fixedly connected to the lateral constraint plate (440).

2. The multi-order buckling restrained energy dissipation support device according to claim 1, characterized in that: The restraint unit (400) further comprises a third connecting component (451) and a fourth connecting component (452); one end of the lateral restraint plate (440) is provided with a first safety hole (443) extending along the first direction; the first support (100) is provided with a first support hole (111) opposite to the first safety hole (443); the third connecting component (451) passes through the first support hole (111) and the first safety hole (443); and along the first direction, the sliding stroke of the third connecting component (451) in the first safety hole (443) is greater than the sliding stroke of the first connecting component (431) in the first long hole (340) and the sliding stroke of the second connecting component (432) ) in the second long hole (350); the other end of the lateral restraint plate (440) is provided with a second safety hole (444) extending along the first direction, the second support (200) is provided with a second support hole (211) opposite to the second safety hole (444), the fourth connecting component (452) passes through the second support hole (211) and the second safety hole (444), and along the first direction, the sliding stroke of the fourth connecting component (452) in the second safety hole (444) is greater than the sliding stroke of the first connecting component (431) in the first long hole (340) and the sliding stroke of the second connecting component (432) in the second long hole (350).

3. The multi-order buckling restrained energy dissipation support device according to claim 1, characterized in that: Along the third direction, the sizes of the first middle restraining plate (460) and the second middle restraining plate (470) are both 0.5 to 3 mm larger than the size of the energy consumption unit (300).

4. The multi-order buckling restrained energy dissipation support device according to claim 2, characterized in that: The restraint unit (400) further comprises a top restraint plate (480) and a bottom restraint plate (490), wherein the top restraint plate (480) and the bottom restraint plate (490) are respectively arranged on both sides of the energy consuming unit (300) along the third direction and abut against the energy consuming unit (300); the top restraint plate (480) and the bottom restraint plate (490) are both fixedly connected to the lateral restraint plate (440).

5. The multi-order buckling restrained energy dissipation support device according to claim 4, characterized in that: The cross-sections of the top restraint plate (480) and the bottom restraint plate (490) are both T-shaped, wherein the vertical section of the T-shape is in contact with the energy consuming unit (300), and the horizontal section of the T-shape is fixedly connected to the lateral restraint plate (440); and / or the cross-section of the lateral restraint plate (440) is [-shaped, wherein the vertical section of the [-shape is connected to the first support (100), the energy consuming unit (300) and the second support (200), and the horizontal section of the [-shape is fixedly connected to the top restraint plate (480) and the bottom restraint plate (490).

6. The multi-order buckling restrained energy dissipation support device according to claim 1, characterized in that: The number of the lateral restraining plates (440) is two, and the two lateral restraining plates (440) are respectively arranged on both sides of the energy consumption unit (300) along the third direction.

7. The multi-order buckling restrained energy dissipation support device according to claim 1, characterized in that: The first support (100) comprises a first connecting plate (110) and a plurality of first ribs (120) arranged on the first connecting plate (110), the first connecting plate (110) being used to connect to the energy consumption unit (300); and / or the second support (200) comprises a second connecting plate (210) and a plurality of second ribs (220) arranged on the second connecting plate (210), the second connecting plate (210) being used to connect to the energy consumption unit (300); and / or the energy consumption unit (300) is detachably connected to the first support (100), the second support (200) and the constraint unit (400).

Images