CN113833147B - Multistage replaceable self-resetting buckling-restrained brace device - Google Patents
Multistage replaceable self-resetting buckling-restrained brace device Download PDFInfo
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- CN113833147B CN113833147B CN202111191319.3A CN202111191319A CN113833147B CN 113833147 B CN113833147 B CN 113833147B CN 202111191319 A CN202111191319 A CN 202111191319A CN 113833147 B CN113833147 B CN 113833147B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0215—Bearing, supporting or connecting constructions specially adapted for such buildings involving active or passive dynamic mass damping systems
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0237—Structural braces with damping devices
Abstract
A multi-order replaceable self-resetting buckling-restrained brace device belongs to the technical field of building structure energy dissipation and shock absorption devices. The energy-saving device comprises an inner pipe mechanism, an outer pipe mechanism, a first-stage energy-consumption restraining mechanism and a second-stage energy-consumption restraining mechanism, wherein the outer pipe mechanism is sleeved outside the inner pipe mechanism, the left side and the right side of the inner part of the outer pipe mechanism are respectively in elastic connection with the left end and the right end of the inner pipe mechanism through the first-stage energy-consumption restraining mechanism and the second-stage energy-consumption restraining mechanism, the first-stage energy-consumption restraining mechanism and the second-stage energy-consumption restraining mechanism are identical in structure, a left connecting part is arranged on the left side of the outer pipe mechanism, and a right connecting part is arranged on the right side of the inner pipe mechanism. The invention can realize multi-stage energy consumption during the earthquake (small and large earthquakes) and provide multiple guarantees for the structure safety; after the earthquake, the residual deformation of the structure caused by support damage can be reduced, and the replacement and detection of the energy consumption mechanism at the later stage are facilitated; because of the holes on the energy-consuming inner core, the fixed-point yielding can be realized, and the end part of the support is further protected, so that the instability and damage of the support are delayed.
Description
Technical Field
The invention relates to a multi-stage replaceable self-resetting buckling-restrained brace device, and belongs to the technical field of building structure energy dissipation and shock absorption devices.
Background
China is located between the Pacific earthquake zone and the Eurasian earthquake zone, is a plurality of earthquake countries in the world, and is one of the most serious countries suffering from earthquake disasters. From the end of the last century to the short decades of today, a plurality of times of earthquake with larger destructiveness occur in China, and earthquake resistance and disaster prevention of buildings face very severe situations.
The traditional anti-seismic idea is 'in the form of steel-gram steel', and the modern anti-seismic idea is 'in the form of soft-gram steel'. The structure is from earthquake resistance to earthquake reduction and isolation, the fortification target and the safety degree requirement are continuously improved, wherein the energy consumption support is better than a 'walking stick' of a building structure, and the safety degree of the structure can be greatly improved under the action of the earthquake.
At present, the buckling restrained brace has the advantages of light dead weight, good hysteresis performance, good ductility and the like, and can be widely applied to the field of energy consumption and shock absorption. However, the traditional buckling-restrained brace keeps elasticity under the condition of a frequent earthquake, can only provide lateral stiffness for the structure, and cannot provide additional damping for the structure to dissipate earthquake energy; when the earthquake action is increased, the supporting member enters a buckling state, peripheral nodes connected with the member are seriously damaged, the residual deformation is large, the difficulty and the cost for repairing the main body structure after disaster are high, and the normal operation of the urban function after disaster is not facilitated; moreover, the energy consumption device in the traditional buckling restrained brace is generally positioned in the energy consumption brace, so that the replacement and the detection are not convenient, and the maintenance after the earthquake is not convenient; the joints of the energy consumption units are also complex, and fixed-point yielding cannot be realized.
Therefore, it is desirable to provide a novel multi-stage replaceable self-resetting buckling-restrained brace device to solve the above technical problems.
Disclosure of Invention
The invention aims to solve the problems that the traditional buckling restrained brace cannot provide additional damping for a structure and dissipate seismic energy when a small earthquake occurs; a brief summary of the present invention is given below to provide a basic understanding of some aspects of the present invention, with regard to the large residual deformations after an earthquake of a multi-stage dissipative mechanism, which are inconvenient to replace and which do not enable the problem of site-specific yielding. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to determine the key or critical elements of the present invention, nor is it intended to limit the scope of the present invention.
The technical scheme of the invention is as follows:
the utility model provides a multistage removable formula is from restoring to throne buckling restrained brace device, includes inner tube mechanism, outer tube mechanism, one-level power consumption restraint mechanism and second grade power consumption restraint mechanism, outer tube mechanism suit is in the inner tube mechanism outside, and the elastic connection is established through the left and right sides of one-level power consumption restraint mechanism and second grade power consumption restraint mechanism and inner tube mechanism respectively in the inside left and right sides of outer tube mechanism, and one-level power consumption restraint mechanism and second grade power consumption restraint mechanism's structure is the same, and the left side of outer tube mechanism is provided with left side connecting portion, and the right side of inner tube mechanism is provided with right side connecting portion.
Preferably: the inner pipe mechanism and the outer pipe mechanism are both hollow tubular structures.
Preferably: the primary energy consumption restraint mechanism comprises an energy consumption inner core and an energy consumption inner core connecting piece, the energy consumption inner core is attached to the outer side wall of the top of the outer tube mechanism, the left end of the energy consumption inner core is fixedly connected with the outer tube mechanism through the energy consumption inner core connecting piece, and the right end of the energy consumption inner core penetrates through the outer tube mechanism and is fixedly connected with the inner tube mechanism through the energy consumption inner core connecting piece.
Preferably, the following components: the one-level energy consumption restraint mechanism further comprises an energy consumption baffle group and a reset disc spring group, disc spring limiting plates are installed on the outer wall of the inner pipe mechanism, a reset disc spring group is arranged between two adjacent disc spring limiting plates, a plurality of energy consumption baffle groups are installed on the inner side wall of the outer pipe mechanism, the distance between every two adjacent energy consumption baffle groups is the same as the distance between every two adjacent disc spring limiting plates, and the inner side wall between the two adjacent energy consumption baffle groups is attached to the left and right ends of the top of the reset disc spring group.
Preferably, the following components: the energy dissipation baffle comprises an upper baffle and a lower baffle which are arranged on the same vertical surface, the upper baffle is arranged on the inner side wall of the upper end of the outer pipe mechanism, and the lower baffle is arranged on the inner side wall of the lower end of the outer pipe mechanism;
the disc spring limiting plate is an annular baffle, and the minimum vertical distance between the upper baffle and the lower baffle is larger than the maximum diameter of the disc spring limiting plate.
Preferably: the number of the reset disc spring groups is at least two.
Preferably: dish spring group resets includes dish spring and dish spring baffle, and the dish spring baffle is all installed at both ends about the dish spring, and the laminating is organized with the power consumption baffle to dish spring baffle top, dish spring baffle bottom and the laminating of dish spring limiting plate.
The invention aims to solve the problem that the traditional buckling restrained brace cannot provide additional damping for the structure and dissipate seismic energy under the action of small earthquake; residual deformation exists in the structure after the earthquake; the energy consumption device is not convenient to replace and detect and can not realize the problem of fixed point yielding, and the technical scheme provided by the invention is as follows:
preferably: the primary energy consumption restraint mechanism further comprises an energy consumption inner core outer baffle, the bottom of the energy consumption inner core outer baffle is in sliding fit with the top of the energy consumption inner core, and the front side wall and the rear side wall of the energy consumption inner core outer baffle are connected with the outer pipe mechanism.
Preferably: the outer pipe mechanism is vertically provided with a through hole, the right side of the energy dissipation inner core of the secondary energy dissipation constraint mechanism is arranged outside the through hole, the energy dissipation inner core connecting piece on the right side of the secondary energy dissipation constraint mechanism is arranged in the through hole, and the cross sectional area of the through hole is larger than the maximum cross sectional area of the energy dissipation inner core connecting piece.
Preferably, the following components: the energy consumption inner core is provided with a plurality of through holes, and the length, the width and the thickness of the energy consumption inner core of the primary energy consumption restraining mechanism are smaller than those of the energy consumption inner core of the secondary energy consumption restraining mechanism;
the distance between every two adjacent energy consumption baffle groups in the first-stage energy consumption constraint mechanism is smaller than the distance between every two adjacent energy consumption baffle groups in the second-stage energy consumption constraint mechanism.
The invention has the following beneficial effects:
1. according to the multi-stage replaceable self-resetting buckling-restrained brace device, the device is provided with two stages of energy consumption areas, and the bearing capacity of each stage of energy consumption area is different, so that multi-stage yielding energy consumption can be realized under the action of an earthquake. When a small earthquake or a small vibration occurs, the support firstly carries out primary yielding energy consumption in the elastic stage; when frequent and rare earthquakes occur, the support performs secondary yielding energy consumption, additional rigidity can be provided for the structure, further earthquake acting force can be dissipated to a greater extent, and earthquake response of the main body structure is reduced;
2. according to the multi-stage replaceable self-resetting buckling-restrained brace device, the resetting disc spring groups in the primary energy consumption restraining mechanism and the secondary energy consumption restraining mechanism are arranged between the outer tube mechanism and the energy consumption inner core, the resetting disc spring groups prevent the buckling deformation of the energy consumption inner core in thickness, the checking, the maintenance and the replacement of the energy consumption inner core are facilitated after the earthquake, and the brace manufacturing cost and the later maintenance cost are reduced to a greater extent;
3. according to the multistage replaceable self-resetting buckling-restrained brace device, the resetting disc spring sets in the primary energy consumption restraining mechanism and the secondary energy consumption restraining mechanism are arranged between the outer tube mechanism and the energy consumption inner core, the energy consumption inner core is provided with a certain number of through holes, the connection of the end parts is enhanced through weakening the middle part, so that instability damage is delayed, the brace fixed-point yielding is realized, and the problems that low-yield-point steel cannot be independently developed at home at that time and steel products with different yield points are welded are solved;
4. according to the multi-stage replaceable self-resetting buckling-restrained brace device, the resetting disc spring group of the device adopts the disc spring as the resetting material, wherein the performance of the disc spring is more stable than that of other resetting materials, and the resetting disc spring has stronger deformability than that of other resetting materials, so that the self-resetting capability is provided for the device, the residual deformation of a main body structure caused by support damage can be resisted, and the difficulty and the cost of post-disaster repair are reduced to a greater extent;
5. according to the multi-stage replaceable self-resetting buckling-restrained brace device, the energy-consuming inner core of the device is restrained by all steel, the all steel restraint is light in weight and simple to install, and the device is suitable for large-span and high-rise structure buildings;
6. the multi-stage replaceable self-resetting buckling-restrained brace device can be widely applied to frame structures, steel structures, large-span and high-rise structures, and can also be used for reconstruction and reinforcement of industrial buildings and old cities.
Drawings
FIG. 1 is a perspective view of a multi-step replaceable self-resetting buckling restrained brace device;
FIG. 2 is a top view of FIG. 1;
FIG. 3 isbase:Sub>A cross-sectional view A-A of FIG. 2;
FIG. 4 is a structural view of the energy dissipating core of the present invention;
FIG. 5 is a schematic diagram of the structure in the normal state in the preferred embodiment;
FIG. 6 is a schematic diagram of the structure under the action of a small shock in the embodiment;
FIG. 7 is a schematic diagram of the structure in a high seismic event in accordance with an embodiment;
in the figure, 1-an inner pipe mechanism, 2-an outer pipe mechanism, 3-a first-stage energy consumption constraint mechanism, 4-a second-stage energy consumption constraint mechanism, 5-a left connecting part, 6-a right connecting part, 11-a disc spring limiting plate, 21-a long through hole, 31-an energy consumption inner core, 32-an energy consumption inner core connecting part, 33-an energy consumption baffle group, 34-a reset disc spring group, 35-an energy consumption inner core outer baffle, 331-an upper baffle, 332-a lower baffle, 341-a disc spring and 342-a disc spring baffle.
Detailed Description
In order that the objects, aspects and advantages of the invention will become more apparent, the invention will be described by way of example only, and with reference to the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The connection mentioned in the invention is divided into fixed connection and detachable connection, the fixed connection is non-detachable connection and comprises but is not limited to folding connection, rivet connection, bonding connection, welding connection and other conventional fixed connection modes, the detachable connection comprises but is not limited to threaded connection, buckle connection, pin connection, hinge connection and other conventional detaching modes, when the specific connection mode is not clearly limited, at least one connection mode can be found in the existing connection modes by default to realize the function, and the skilled person can select according to the needs. For example: the fixed connection selects welding connection, and the detachable connection selects hinge connection.
The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 4, and the multistage replaceable self-resetting buckling restrained brace device of the embodiment comprises an inner tube mechanism 1, an outer tube mechanism 2, a primary energy consumption restraining mechanism 3 and a secondary energy consumption restraining mechanism 4, wherein the outer tube mechanism 2 is sleeved outside the inner tube mechanism 1, the left side and the right side of the inner portion of the outer tube mechanism 2 are respectively elastically connected with the left end and the right end of the inner tube mechanism 1 through the primary energy consumption restraining mechanism 3 and the secondary energy consumption restraining mechanism 4, the primary energy consumption restraining mechanism 3 and the secondary energy consumption restraining mechanism 4 are identical in structure, a left connecting part 5 is arranged on the left side of the outer tube mechanism 2, a right connecting part 6 is arranged on the right side of the inner tube mechanism 1, and when the multistage replaceable self-resetting buckling restrained brace device is used, the primary energy consumption restraining mechanism 3 and the secondary energy consumption restraining mechanism 4 are divided into two stages to play a role in resetting buckling prevention, so that multi-stage energy consumption can be realized during earthquake action, and multiple guarantee is provided for structure safety; after the earthquake, the residual deformation of the main structure caused by support damage is favorably reduced, the replacement and detection of the later-stage energy consumption mechanism are convenient, the first-stage energy consumption constraint mechanism 3 belongs to a first-stage energy consumption area, the second-stage energy consumption constraint mechanism 4 belongs to a second-stage energy consumption area, the left-side connecting part 5 and the right-side connecting part 6 are connected with an external building structure, the first-stage energy consumption constraint mechanism 3 and the second-stage energy consumption constraint mechanism 4 can be set into a plurality of groups, the first-stage energy consumption area and the second-stage energy consumption area have different bearing capacities, and the bearing capacity can be determined by specific engineering examples.
The inner pipe mechanism 1 and the outer pipe mechanism 2 are both hollow tubular structures, the inner pipe mechanism 1 is a hollow round tubular structure, and the outer pipe mechanism 2 is a hollow square tubular structure.
The primary energy consumption restraint mechanism 3 comprises an energy consumption inner core 31 and an energy consumption inner core connecting piece 32, the energy consumption inner core 31 is attached to the outer side wall of the top of the outer pipe mechanism 2 in a sliding mode, the left end of the energy consumption inner core 31 is fixedly connected with the outer pipe mechanism 2 through the energy consumption inner core connecting piece 32, the right end of the energy consumption inner core 31 penetrates through the outer pipe mechanism 2 and is fixedly connected with the inner pipe mechanism 1 through the energy consumption inner core connecting piece 32, the energy consumption inner core 31 is stretched and compressed through relative movement of the inner pipe mechanism 1 and the outer pipe mechanism 2, energy consumption is achieved, the thickness, the width and the length of a yield stage of the energy consumption inner core 31 of the primary energy consumption restraint mechanism 3 are different from those of the energy consumption inner core 31 of the secondary energy consumption restraint mechanism 4, even if the rigidity of the two stages of the energy consumption inner cores is different, the energy consumption inner core connecting piece 32 is of a detachable clamping structure and comprises a mounting column and a mounting plate, the mounting plate is detachably connected with the mounting column, the energy consumption inner core connecting piece 31 and the mounting column are clamped in a clamping groove in the top of the mounting column, the energy consumption device, the difficulty of replacing and the energy consumption inner core 31 and the repairing of the main structure caused by disaster after the disaster is reduced, so that the repairing cost of the city is favorable for keeping the normal operation of the city, and the normal operation cost is favorable for keeping the city.
One-level power consumption restraint mechanism 3 still includes power consumption baffle group 33 and dish spring group 34 resets, install dish spring limiting plate 11 on the 1 outer wall of inner tube mechanism, be provided with dish spring group 34 that resets between two adjacent dish spring limiting plate 11, install a plurality of power consumption baffle group 33 on the inside wall of outer tube mechanism 2, the interval between every two adjacent power consumption baffle group 33 is the same with the interval between every two adjacent dish spring limiting plate 11, reset dish spring group 34 about the top both ends and the laminating of the inside wall between two adjacent power consumption baffle group 33.
The secondary energy consumption restraining mechanism 4 and the primary energy consumption restraining mechanism 3 adopt the same structural design, and the inner pipe mechanism 1 realizes relative reciprocating motion through compression and rebound of the primary energy consumption restraining mechanism 3 and the secondary energy consumption restraining mechanism 4.
The energy consumption baffle group 33 is divided into an upper baffle 331 and a lower baffle 332 which are arranged on the same vertical surface, the upper baffle 331 is arranged on the inner side wall of the upper end of the outer pipe mechanism 2, and the lower baffle 332 is arranged on the inner side wall of the lower end of the outer pipe mechanism 2;
the disc spring limiting plate 11 is an annular baffle, and the minimum vertical distance between the upper baffle 331 and the lower baffle 332 is greater than the maximum diameter of the disc spring limiting plate 11.
The number of the reset disc spring groups 34 is at least two.
The reset disc spring group 34 comprises a disc spring 341 and a disc spring baffle 342, the disc spring baffle 342 is installed at the left end and the right end of the disc spring 341, the top of the disc spring baffle 342 is attached to the energy consumption baffle group 33, the bottom of the disc spring baffle 342 is attached to the disc spring limiting plate 11, the disc spring 341 is a disc spring group and is assembled in a mode of overlapping and then closing, the action principle is that the disc springs are connected in series through the flexibility and then in parallel through the rigidity, the number, the size and the shape of the disc springs in the first-stage energy consumption constraint mechanism 3 are different from those of the second-stage energy consumption constraint mechanism 4, the overall rigidity of the disc springs in the first-stage energy consumption constraint mechanism 3 is smaller than that of the disc springs in the second-stage energy consumption constraint mechanism 4 during setting, the disc spring prestress can be applied by changing the distance of the limiting part, the prestress is regulated and controlled according to the reset capacity matched with the energy consumption mechanisms, and the disc springs realize compression and stretching through the relative motion of the inner tube mechanism 1 and the outer tube mechanism 2, so as to provide the reset capacity for supporting.
The primary energy consumption restraint mechanism 3 further comprises an energy consumption inner core outer baffle 35, the energy consumption inner core outer baffle 35 is a door-shaped baffle, the energy consumption inner core outer baffle 35 is arranged at the top of the energy consumption inner core 31, the bottoms of the front side wall and the rear side wall of the energy consumption inner core outer baffle 35 are connected with the outer pipe mechanism 2 through long bolts, and a certain moving distance is arranged between the energy consumption inner core outer baffle 35 and the energy consumption inner core 31, so that the energy consumption inner core 31 has a space enough to deform.
The outer tube mechanism 2 is vertically provided with a long through hole 21, the right side of an energy consumption inner core 31 of the secondary energy consumption constraint mechanism 4 is arranged outside the long through hole 21, an energy consumption inner core connecting piece 32 positioned on the right side of the secondary energy consumption constraint mechanism 4 is arranged in the long through hole 21, the cross section area of the long through hole 21 is larger than the maximum cross section area of the energy consumption inner core connecting piece 32, the long through hole 21 is arranged to allow the energy consumption inner core connecting piece 32 on the right side of the secondary energy consumption constraint mechanism 4 to freely pass through, and the distance of the transverse movement direction of the long through hole 21 can be determined by the resetting capability.
The energy consumption inner core 31 is provided with a certain number of through holes in certain shapes, so that the performance of the inner core is fully exerted, the support device is favorable for realizing fixed-point yielding, the support end part can be well protected, the instability damage of the support end part is delayed, the welding problems that steel with low yield point cannot be independently developed at home at that time and steel with different yield points are avoided, and the length, the width and the thickness of the energy consumption inner core 31 of the primary energy consumption constraint mechanism 3 are smaller than those of the energy consumption inner core 31 of the secondary energy consumption constraint mechanism 4; the arrangement aims to enable the energy consumption capacity of the primary energy consumption restraining mechanism 3 to be smaller than that of the secondary energy consumption restraining mechanism 4, so that the multi-stage energy consumption capacity of the energy consumption support can be improved, the whole stress state is dispersed, the structure is more stable, and buckling is not easy to occur;
the distance between every two adjacent energy consumption baffle groups 33 in the first-stage energy consumption constraint mechanism 3 is smaller than the distance between every two adjacent energy consumption baffle groups 33 in the second-stage energy consumption constraint mechanism 4.
When the device is in a normal state without extra vibration external force applied in a supporting state, the stress condition of the internal structure of the device is as shown in fig. 5, and the working principle of the device under the action of small vibration and large vibration is briefly described by taking the supporting tension state as an example with reference to fig. 5-7:
under the action of small vibration: as shown in fig. 6, the right primary energy consuming area is supported. When the support is pulled, the axial force borne by the support is greater than the pre-pressure of the reset disc spring group 34 in the first-stage energy consumption constraint mechanism 3, the first-stage energy consumption constraint mechanism 3 on the right side compresses to work, and the inner pipe mechanism 1 and the outer pipe mechanism 2 start to move relatively. The outer tube mechanism 2 moves to the left and the inner tube mechanism 1 moves to the right. The inner pipe mechanism 1 drives the reset disc spring set 34 to extrude the energy consumption baffle set 33 leftwards through the disc spring limiting plate 11, so that the reset disc spring set 34 is pressed. Due to the connection of the energy dissipation inner core 31 and the inner pipe mechanism 1 and the outer pipe mechanism 2, when the relative deformation of the inner pipe mechanism 1 and the outer pipe mechanism 2 is increased, the energy dissipation inner core 31 gradually extends. During unloading, the reset disc spring set 34 rebounds to enable the outer pipe mechanism 2 to move rightwards and the inner pipe mechanism 1 to move leftwards, and self-resetting is completed. The energy-consuming inner core 31 in the self-resetting process is divided into two stages: in the first stage, the energy consumption inner core 31 is unloaded in a pulling way, and the elongation is gradually reduced to 0; in the second stage, the energy consumption inner core 31 starts to be pressed reversely, the right first-stage energy consumption region works as a main part under the action of small shock, the left second-stage energy consumption restraining mechanism 4 generates the same stress and motion state as the right first-stage energy consumption restraining mechanism 3, but the relative motion distance of the second-stage energy consumption restraining mechanism 4 is smaller than that of the first-stage energy consumption restraining mechanism 3.
Under the action of a large earthquake: as shown in fig. 7, when the left secondary energy consumption area is supported, and the axial force applied to the support is greater than the pre-pressure of the reset disc spring set 34 in the secondary energy consumption restraining mechanism 4 when the support is pulled, the right primary energy consumption restraining mechanism 3 and the left secondary energy consumption restraining mechanism 4 simultaneously perform compression work, and the inner pipe mechanism 1 and the outer pipe mechanism 2 start to move relatively. The outer tube mechanism 2 moves leftwards, and the inner tube mechanism 1 moves rightwards. The inner pipe mechanism 1 drives the reset disc spring set 34 to extrude the energy consumption baffle set 33 leftwards through the disc spring limiting plate 11, so that the reset disc spring set 34 is pressed. Due to the connection of the energy consumption inner core 31 and the inner tube mechanism 1 and the outer tube mechanism 2, when the relative deformation of the inner tube mechanism 1 and the outer tube mechanism 2 is increased, the energy consumption inner core 31 is gradually extended, and at the moment, the right first-stage energy consumption restraint mechanism 3 keeps a compression state under the action of the small shock; when unloading, the reset disc spring group 34 rebounds to make the outer pipe mechanism 2 move rightwards and the inner pipe mechanism 1 move leftwards, and self-resetting is completed. The energy-consuming inner core 31 in the self-resetting process is divided into two stages: in the first stage, the energy-consuming inner core 31 is unloaded in a tensioned manner, and the elongation is gradually reduced to 0; in the second stage, the energy-consuming inner core 31 starts to be reversely pressed, the left secondary energy-consuming area works as a main part under the action of a large earthquake, and the right primary energy-consuming area keeps a working state under the action of a small earthquake or continues to work.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the directions or positional relationships indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the directions or positional relationships shown in the drawings, and are for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
It should be noted that, in the above embodiments, as long as the technical solutions can be aligned and combined without contradiction, those skilled in the art can exhaust all possibilities according to the mathematical knowledge of the alignment and combination, and therefore, the present invention does not describe the technical solutions after alignment and combination one by one, but it should be understood that the technical solutions after alignment and combination have been disclosed by the present invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a multistage removable formula is from restoring to throne buckling restrained brace device which characterized in that: the energy-saving and energy-saving device comprises an inner pipe mechanism (1), an outer pipe mechanism (2), a first-stage energy consumption constraint mechanism (3) and a second-stage energy consumption constraint mechanism (4), wherein the inner pipe mechanism (1) and the outer pipe mechanism (2) are both hollow tubular structures, the outer pipe mechanism (2) is sleeved on the outer side of the inner pipe mechanism (1), the left side and the right side of the inner part of the outer pipe mechanism (2) are respectively in elastic connection with the left end and the right end of the inner pipe mechanism (1) through the first-stage energy consumption constraint mechanism (3) and the second-stage energy consumption constraint mechanism (4), the first-stage energy consumption constraint mechanism (3) and the second-stage energy consumption constraint mechanism (4) are identical in structure, a left side connecting part (5) is arranged on the left side of the outer pipe mechanism (2), and a right side connecting part (6) is arranged on the right side of the inner pipe mechanism (1);
the primary energy consumption restraint mechanism (3) comprises an energy consumption inner core (31) and an energy consumption inner core connecting piece (32), the energy consumption inner core (31) is attached to the outer side wall of the top of the outer pipe mechanism (2), the left end of the energy consumption inner core (31) is fixedly connected with the outer pipe mechanism (2) through the energy consumption inner core connecting piece (32), and the right end of the energy consumption inner core (31) penetrates through the outer pipe mechanism (2) through the energy consumption inner core connecting piece (32) to be fixedly connected with the inner pipe mechanism (1);
one-level power consumption restraint mechanism (3) still include power consumption baffle group (33) and dish spring group (34) reset, install dish spring limiting plate (11) on inner tube mechanism (1) outer wall, be provided with dish spring group (34) that resets between two adjacent dish spring limiting plate (11), install a plurality of power consumption baffle group (33) on the inside wall of outer tube mechanism (2), interval between per two adjacent power consumption baffle group (33) is the same with the interval between per two adjacent dish spring limiting plate (11) that correspond, reset about dish spring group (34) top both ends and the laminating of the inside wall between two adjacent power consumption baffle group (33).
2. The multi-step replaceable self-resetting buckling restrained brace device of claim 1, wherein: the energy consumption baffle group (33) is divided into an upper baffle (331) and a lower baffle (332) which are arranged on the same vertical surface, the upper baffle (331) is arranged on the inner side wall of the upper end of the outer pipe mechanism (2), and the lower baffle (332) is arranged on the inner side wall of the lower end of the outer pipe mechanism (2);
the disc spring limiting plate (11) is an annular baffle, and the minimum vertical distance between the upper baffle (331) and the lower baffle (332) is larger than the maximum diameter of the disc spring limiting plate (11).
3. The multi-step replaceable self-resetting buckling restrained brace device of claim 2, wherein: the number of the reset disc spring groups (34) is at least two.
4. The multi-step replaceable self-resetting buckling restrained brace device of claim 3, wherein: the reset disc spring group (34) comprises a disc spring (341) and disc spring baffles (342), the disc spring baffles (342) are installed at the left end and the right end of the disc spring (341), the top of each disc spring baffle (342) is attached to the energy consumption baffle group (33), and the bottom of each disc spring baffle (342) is attached to the disc spring limiting plate (11).
5. The multi-step replaceable self-resetting buckling restrained brace device of claim 4, wherein: the primary energy consumption restraint mechanism (3) further comprises an energy consumption inner core outer baffle (35), the energy consumption inner core outer baffle (35) is arranged at the top of the energy consumption inner core (31), and the front side wall and the rear side wall of the energy consumption inner core outer baffle (35) are connected with the outer pipe mechanism (2).
6. The multi-step replaceable self-resetting buckling restrained brace device of claim 5, wherein: the outer tube mechanism (2) is vertically provided with a long through hole (21), the right side of an energy consumption inner core (31) of the secondary energy consumption constraint mechanism (4) is arranged on the outer side of the long through hole (21), an energy consumption inner core connecting piece (32) located on the right side of the secondary energy consumption constraint mechanism (4) is arranged in the long through hole (21), and the cross sectional area of the long through hole (21) is larger than the maximum cross sectional area of the energy consumption inner core connecting piece (32).
7. The multi-step replaceable self-resetting buckling restrained brace device of claim 6, wherein: the energy consumption inner core (31) is provided with a plurality of through holes, and the length, the width and the thickness of the energy consumption inner core (31) of the primary energy consumption restraining mechanism (3) are smaller than those of the energy consumption inner core (31) of the secondary energy consumption restraining mechanism (4);
the distance between every two adjacent energy consumption baffle groups (33) in the first-stage energy consumption constraint mechanism (3) is smaller than the distance between every two adjacent energy consumption baffle groups (33) in the second-stage energy consumption constraint mechanism (4).
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| CN202111191319.3A CN113833147B (en) | 2021-10-13 | 2021-10-13 | Multistage replaceable self-resetting buckling-restrained brace device |
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| CN113833147B true CN113833147B (en) | 2022-10-11 |
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| CN115012547B (en) * | 2022-07-01 | 2023-06-27 | 郑州大学 | Flexible constraint type assembled buckling restrained brace structure based on SMA bolt |
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