CN113585510A - Hierarchical energy-consumption friction metal shearing composite energy dissipater - Google Patents
Hierarchical energy-consumption friction metal shearing composite energy dissipater Download PDFInfo
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- CN113585510A CN113585510A CN202110902272.0A CN202110902272A CN113585510A CN 113585510 A CN113585510 A CN 113585510A CN 202110902272 A CN202110902272 A CN 202110902272A CN 113585510 A CN113585510 A CN 113585510A
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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
- 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
- E04H9/0237—Structural braces with damping devices
Abstract
The invention relates to the field of building structure shock absorption, in particular to a hierarchical energy-consuming friction metal shearing composite energy dissipater, which comprises: the upper base and the lower base are arranged at intervals and are parallel to each other; the friction energy dissipation unit and the metal shearing energy dissipation unit are arranged between the upper base and the lower base in parallel; and the distance between each limiting device and the outer surface of the metal shearing energy dissipation unit is equal to the deformation of the second-stage metal shearing energy dissipation unit when the second-stage metal shearing energy dissipation unit enters a working state. The hierarchical energy dissipation friction metal shearing composite energy dissipater comprehensively utilizes the energy dissipation mechanism and the product characteristics of the friction energy dissipation unit and the metal shearing type energy dissipation unit, can better adapt to the structural energy dissipation requirements under the earthquake action of different levels, can provide more comprehensive protection, and is a damping product with better performance.
Description
Technical Field
The invention relates to the field of building structure shock absorption, in particular to a graded energy consumption friction metal shearing composite energy dissipater.
Background
Earthquake is a sudden natural disaster, which poses great threat to human survival and development, and is mainly caused by the excessive deformation, damage or collapse of building structures during earthquake. In order to reduce the loss caused by earthquake, various types of energy-consuming and shock-absorbing methods have been developed. The key parts of the building structure are provided with energy dissipation devices or energy dissipaters, and the earthquake energy is consumed through friction, bending, elastic-plastic deformation and the like, so that the earthquake reaction of the main structure can be reduced.
According to different energy dissipation principles, commonly used energy dissipaters are roughly classified into velocity-dependent energy dissipaters and displacement-dependent energy dissipaters. Wherein the magnitude of the output of the speed-related energy dissipater is in proportional relation with the response speed of the structure, such as a viscous fluid energy dissipater, a viscous damping wall and the like; the displacement-related energy dissipater consumes energy by using a yielding platform, such as a metal soft steel energy dissipater, a buckling-restrained steel plate wall, a buckling-restrained brace, a friction energy dissipater and the like, wherein metal materials are mostly selected, and plastic energy dissipation can be performed by using out-of-plane bending or in-plane shearing yielding.
The friction energy dissipater is a displacement type energy dissipater, the working principle of the displacement type energy dissipater is that two contact surfaces generate friction force to consume vibration energy of a building through relative movement, the working process of the displacement type energy dissipater mainly undergoes two states of adhesion and sliding, and the energy consumption capability mainly depends on friction plate parameters and positive pressure. When the external load is smaller than the maximum static friction force of the energy dissipater, the device is in an adhesion state; when the external load is larger than the maximum static friction force of the friction energy dissipater, the device slides to generate friction and consume energy. The friction energy dissipater has good and stable energy dissipation capability and reliable working performance, can effectively reduce the earthquake reaction of the structure, and has the characteristics of low manufacturing cost, simple structure and convenient installation and maintenance.
The metal shearing type energy dissipater dissipates energy of the earthquake motion input structure by utilizing shearing deformation and plastic accumulation of the energy dissipation web plate with the low yield point in a plane, and has the advantages of stable performance, good durability, convenience in installation, lower maintenance cost and the like. The metal shearing energy dissipater is stiffened by reasonably constructing the web plate, and special materials are selected, so that the web plate of the energy dissipater is guaranteed to be buckled without buckling under the reciprocating load effect, and the metal shearing energy dissipater has the characteristics of good fatigue performance and strong deformability.
However, in the prior art, after a single friction energy dissipater starts to be started, the rigidity is suddenly reduced after yielding, which causes the rigidity of the structure to suddenly change, and an unfavorable failure mechanism is formed on some floors, so that the overall earthquake resistance of the structure is unfavorable. Therefore, it is necessary to provide a composite energy dissipater with good effect and graded energy consumption.
Disclosure of Invention
The invention provides a hierarchical energy dissipation friction metal shearing composite energy dissipater, wherein the multistage parallel friction energy dissipater has different sliding force and initial rigidity, so that the friction energy dissipater can be suitable for different levels of amplitude, and the energy dissipation capability and the structural anti-seismic performance of the friction energy dissipater are improved.
The invention provides a hierarchical energy-consuming friction-metal shearing composite energy dissipater, which is characterized by comprising the following components: an upper base 10 and a lower base 20 which are oppositely arranged at intervals and are parallel to each other; the friction energy dissipation unit 30 and the metal shearing energy dissipation unit 40 are arranged between the upper base 10 and the lower base 20 in parallel; and a pair of limiting devices 50 arranged on the upper base 10 or the lower base 20 and positioned at two sides of the metal shearing energy dissipation unit 40, wherein the distance between each limiting device 50 and the outer surface of the metal shearing energy dissipation unit 40 is equal to the deformation of the second-stage metal shearing energy dissipation unit when the second-stage metal shearing energy dissipation unit enters a working state.
Alternatively, the energy dissipation direction of the friction energy dissipation units 30 and the energy dissipation direction of the metal shear energy dissipation units 40 coincide.
Optionally, the friction energy dissipating unit 30 comprises: the middle steel plate 301 is fixedly connected with one of the upper base 10 or the lower base 20, and the middle steel plate 301 is provided with a plurality of first through holes 303 distributed in an array; a pair of friction plates 302 arranged closely to two side surfaces of the middle steel plate 301, the pair of friction plates 302 is fixedly connected with the other one of the upper base 10 or the lower base 20, the friction plates 302 are provided with a plurality of second through holes 304 distributed in an array, and the plurality of second through holes 304 correspond to the plurality of first through holes 303 in position; and a plurality of pre-tightening bolts penetrating the plurality of first through holes 303 and the plurality of second through holes 304 to connect the intermediate steel plate 301 with the pair of friction plates 302.
Alternatively, the middle steel plate 301 is fixedly coupled to one of the upper base 10 or the lower base 20 by bolts, and the pair of friction plates 302 is coupled to the other of the upper base 10 or the lower base 20 by welding.
Optionally, the method further comprises: a pair of clamping and connecting steel plates 601 arranged on the upper base 10 or the lower base 20, which can clamp the upper end part or the lower end part of the middle steel plate 301 of the friction energy dissipation unit 30, wherein the pair of clamping and connecting steel plates 601 is provided with a plurality of third through holes 602 distributed in an array; a plurality of fourth through holes 305 arranged at the upper end part or the lower end part of the middle steel plate 301 and distributed in an array, wherein the plurality of fourth through holes 305 correspond to the plurality of third through holes 602 in position; and a plurality of connecting bolts penetrating the third through hole 602 and the fourth through holes 305 to connect the middle steel plate 301 with the pair of clamping connecting steel plates 601.
Optionally, the metal shear energy dissipating unit 40 comprises: the upper connecting plate 401 and the lower connecting plate 402 are arranged at intervals and are parallel to each other, the upper connecting plate 401 is fixedly connected with the upper base 10, and the lower connecting plate 402 is fixedly connected with the lower base 20; the energy dissipating web 403, the first connecting plate 401, the energy dissipating web 403 and the second connecting plate 402 are "i" shaped connected and the energy dissipating web 403 is disposed between the first connecting plate 401 and the second connecting plate 402.
Optionally, the upper connecting plate 401 is fixedly connected with the upper base 10 by bolts, and a gap is left between the lower connecting plate 402 and the lower base 20; or, a gap is left between the upper connecting plate 401 and the upper base 10, and the lower connecting plate 402 and the lower base 20 are fixedly connected by bolts.
Optionally, the metal shear energy dissipating unit 40 further comprises: a plurality of stiffeners 404, the plurality of stiffeners 404 being symmetrically disposed on both sides of the energy dissipating web 403 with respect to the energy dissipating web 403.
Optionally, a plurality of stiffeners 404 are arranged in a grid.
Optionally, the metal shear energy dissipating unit 40 further comprises: a pair of flange plates 405 symmetrically disposed about the energy dissipating web 403, the pair of flange plates 405 being connected perpendicular to the energy dissipating web 403 and being disposed between the first connecting plate 401 and the second connecting plate 402.
In the technical scheme provided by the invention, the defect of insufficient rigidity of a single-stage friction energy dissipater after yielding is overcome, and the friction energy dissipation unit and the metal shearing energy dissipation unit are respectively used as a first-stage energy dissipation device and a second-stage energy dissipation device. Under the action of small earthquake, the friction energy dissipation unit enters a working state, the metal shearing energy dissipation unit does not enter the working state, the metal shearing energy dissipation unit also enters the working state along with the increase of earthquake input, the structural earthquake reaction and the interlayer deformation, and has a certain compensation effect on the rigidity of a main structural layer, so that the multi-stage earthquake-resistant performance target is realized. The hierarchical energy dissipation friction metal shearing composite energy dissipater comprehensively utilizes the energy dissipation mechanism and the product characteristics of the friction energy dissipation unit and the metal shearing type energy dissipation unit, can better adapt to the structural energy dissipation requirements under the earthquake action of different levels, can provide more comprehensive protection, and is a damping product with better performance.
Drawings
For purposes of illustration and not limitation, the present invention will now be described in accordance with its preferred embodiments, particularly with reference to the accompanying drawings, in which:
figure 1 is a schematic perspective view of a graded energy-dissipating friction metal shear composite energy dissipater provided in an embodiment of the present invention;
fig. 2 is a schematic perspective view of a friction energy dissipation unit in the graded energy dissipation friction metal shear composite energy dissipater according to the embodiment of the present invention;
figure 3 is a schematic perspective view of clamping and connecting steel plates in the graded energy-consuming friction metal shearing composite energy dissipater provided by the embodiment of the invention;
figure 4 is a schematic view of the assembly of friction energy dissipaters and clamping connection steel plates in the graded energy dissipation friction metal shear composite energy dissipater provided by the embodiment of the invention;
fig. 5 is a schematic perspective view of a metal shear energy dissipation unit in the hierarchical energy-consuming friction metal shear composite energy dissipater according to the embodiment of the present invention;
figure 6 is a hysteresis curve diagram of a graded energy dissipating friction metal shear composite energy dissipater provided by an embodiment of the invention.
In the figure:
10: an upper base; 20: a lower base; 30: a friction energy dissipation unit; 301: an intermediate steel plate; 302: a friction plate; 303: a first through hole; 304: a second through hole; 305: a fourth via hole; 40: a metal shearing energy dissipation unit; 401: an upper connecting plate; 402: a lower connecting plate; 403: an energy dissipation web plate; 404: a stiffening rib; 405: a flange plate; 50: a limiting device; 601: connecting and clamping steel plates; 602: a third via.
Detailed Description
In the embodiment of the invention, the friction energy dissipation unit and the metal shearing energy dissipation unit are connected in parallel and are respectively used as a first-stage energy dissipation device and a second-stage energy dissipation device. The lateral stiffness of the friction energy dissipation unit of the first level is small, the ultimate displacement is large, the lateral stiffness of the metal shear energy dissipation unit of the second level is large, and the yield displacement and the ultimate displacement are small. Therefore, the combination of the two can improve the energy dissipation capability and the structural seismic performance of the composite energy dissipater, and the detailed description is provided by the attached drawings and the specific embodiments.
As shown in fig. 1 to 5, the hierarchical energy-consuming friction metal shear composite energy dissipater provided by the embodiments of the present invention may include: an upper base 10 and a lower base 20 which are oppositely arranged at intervals and are parallel to each other; the friction energy dissipation unit 30 and the metal shearing energy dissipation unit 40 are arranged between the upper base 10 and the lower base 20 in parallel; and a pair of limiting devices 50 arranged on the upper base 10 or the lower base 20 and positioned at two sides of the metal shearing energy dissipation unit 40, wherein the distance between each limiting device 50 and the outer surface of the metal shearing energy dissipation unit 40 is equal to the deformation of the second-stage metal shearing energy dissipation unit when the second-stage metal shearing energy dissipation unit enters a working state. The above requirements for the spacing are to ensure that: when the horizontal displacement of the friction energy dissipation unit 30, which plays the role of the first-stage energy dissipation, reaches the maximum, the metal shearing energy dissipation unit 40 can be smoothly started to enter the working state. It should be noted that the pair of position-limiting devices 50 shown in fig. 1 are disposed on the upper base 10 for illustration only and not limitation.
Alternatively, the energy dissipation direction of the friction energy dissipation units 30 and the energy dissipation direction of the metal shear energy dissipation units 40 coincide. For example, the friction energy dissipater unit 30 in figure 1 can absorb vibration input in the horizontal direction, and the metal shear energy dissipater unit 40 can also absorb vibration input in the horizontal direction. The two energy dissipating units work together best.
Optionally, the friction energy dissipating unit 30 comprises: the middle steel plate 301 is fixedly connected with one of the upper base 10 or the lower base 20, and the middle steel plate 301 is provided with a plurality of first through holes 303 distributed in an array; a pair of friction plates 302 arranged closely to two side surfaces of the middle steel plate 301, the pair of friction plates 302 is fixedly connected with the other one of the upper base 10 or the lower base 20, the friction plates 302 are provided with a plurality of second through holes 304 distributed in an array, and the plurality of second through holes 304 correspond to the plurality of first through holes 303 in position; and a plurality of pre-tightening bolts (not shown) penetrating through the plurality of first through holes 303 and the plurality of second through holes 304 to connect the intermediate steel plate 301 with the pair of friction plates 302. The intermediate steel plate 301 and the friction plate 302 may be made of steel, and a friction surface may be formed between the steel and the friction plate by sand blasting or by providing a friction material such as brass.
Alternatively, the middle steel plate 301 is fixedly coupled to one of the upper base 10 or the lower base 20 by bolts, and the pair of friction plates 302 is coupled to the other of the upper base 10 or the lower base 20 by welding.
Optionally, the method further comprises: a pair of clamping and connecting steel plates 601 arranged on the upper base 10 or the lower base 20, which can clamp the upper end part or the lower end part of the middle steel plate 301 of the friction energy dissipation unit 30, wherein the pair of clamping and connecting steel plates 601 is provided with a plurality of third through holes 602 distributed in an array; a plurality of fourth through holes 305 arranged at the upper end part or the lower end part of the middle steel plate 301 and distributed in an array, wherein the plurality of fourth through holes 305 correspond to the plurality of third through holes 602 in position; a plurality of connecting bolts (not shown) are inserted through the third through holes 602 and the fourth through holes 305 to connect the intermediate steel plate 301 to the pair of clamping and connecting steel plates 601. For example: in fig. 1, a clamping connection steel plate 601 is provided on the upper base 10, and the clamping connection steel plate 601 clamps an upper end part of the middle steel plate 301. It should be noted that fig. 1 is only for illustration and not for limitation. In other embodiments, the clamping connection steel plate 601 may be disposed on the lower base 20, and the clamping connection steel plate 601 clamps the lower end portion of the middle steel plate 301.
Optionally, the metal shear energy dissipating unit 40 comprises: the upper connecting plate 401 and the lower connecting plate 402 are arranged at intervals and are parallel to each other, the upper connecting plate 401 is fixedly connected with the upper base 10, and the lower connecting plate 402 is fixedly connected with the lower base 20; the energy dissipating web 403, the first connecting plate 401, the energy dissipating web 403 and the second connecting plate 402 are "i" shaped connected and the energy dissipating web 403 is disposed between the first connecting plate 401 and the second connecting plate 402. Wherein, the material of the energy dissipation web 403 is mild steel.
Optionally, the upper connecting plate 401 is fixedly connected with the upper base 10 by bolts, and a gap is left between the lower connecting plate 402 and the lower base 20; or, a gap is left between the upper connecting plate 401 and the upper base 10, and the lower connecting plate 402 and the lower base 20 are fixedly connected by bolts.
Optionally, the metal shear energy dissipating unit 40 further comprises: a plurality of stiffeners 404, the plurality of stiffeners 404 being symmetrically disposed on both sides of the energy dissipating web 403 with respect to the energy dissipating web 403. The stiffening ribs 404 are designed to make the surface of the energy dissipating web 403 uniformly stressed and avoid local out-of-plane deformation.
Optionally, a plurality of stiffeners 404 are arranged in a grid. The grid shape comprises rhombus, rectangle, wave or other irregular shapes, and can be flexibly arranged.
Optionally, the metal shear energy dissipating unit 40 further comprises: a pair of flange plates 405 symmetrically disposed about the energy dissipating web 403, the pair of flange plates 405 being connected perpendicular to the energy dissipating web 403 and being disposed between the first connecting plate 401 and the second connecting plate 402. The flange plates 405 may increase the edge support capability of the dissipater web 403 to avoid edge concentration stress collapse.
The embodiment of the invention provides a hierarchical energy-consumption friction metal shearing composite energy dissipater, which has the specific working mechanism that: (1) under the action of small vibration: the friction energy dissipation unit of the first stage firstly enters yield energy dissipation, and because the horizontal deformation between the layers of the structure under small earthquake is smaller than the horizontal distance between the limiting device and the metal shearing type energy dissipation unit of the second stage, the metal shearing type energy dissipation unit does not enter a working state, and the energy dissipation effect of the first yield section is not influenced. (2) Under the action of medium or large earthquake: the horizontal deformation ratio between layers of the structure is remarkably increased under a small earthquake, the horizontal distance between the limiting device and the metal shearing type energy dissipation unit of the second stage is reached or exceeded, the metal shearing type energy dissipation unit enters a working state to generate shearing deformation energy dissipation, and the rigidity and the bearing capacity of the metal shearing type energy dissipation unit of the second stage are remarkably higher than those of the first stage, so that the structure well adapts to the increase of earthquake action and the energy dissipation requirement of the structure, and the structure is superposed with the energy dissipation capacity of the friction energy dissipation unit of the first stage to play an energy dissipation role together.
From the above, the first-stage friction energy dissipation unit has larger ultimate displacement, and can work normally under a large earthquake, so that the requirement of ultimate deformation is easily met; the ultimate displacement of the second-stage metal shear type energy dissipation unit is smaller, but the yield energy dissipation starts under the medium or large earthquake, and the requirement of ultimate deformation is easily met.
FIG. 6 shows the friction metal shear composite energy dissipation with graded energy dissipation according to the embodiment of the present inventionThe hysteresis curve chart of the device has the horizontal axis of horizontal shearing deformation of the energy dissipater and the vertical axis of horizontal shearing force of the energy dissipater. The working process of the friction metal shear composite energy dissipater with graded energy consumption of the invention can be seen in figure 6, wherein l1The distance between an upper connecting plate of the metal shearing energy dissipation unit and limiting devices positioned on two sides is provided. The dense dotted lines show the hysteresis curves of the first-stage friction energy dissipation units, the deformation of the first-stage friction energy dissipation units is equal to the deformation of the whole energy dissipation units, and the hysteresis curves of the first-stage friction energy dissipation units are completely consistent with the total hysteresis curves of the composite energy dissipaters before the second-stage metal shear type energy dissipation units are not in operation. The sparse dotted line shows the hysteresis curve of the second-stage metal shearing energy dissipation unit, and the deformation of the second-stage metal shearing energy dissipation unit when the second-stage metal shearing energy dissipation unit enters the working state is l1，l1Also the deformation difference between the first yielding segment and the second yielding segment, the hysteresis curve of the second-stage metal shear type energy dissipation unit is bilinear, as shown in fig. 6. The solid line is the superposition effect of the hysteresis curves of the first-stage friction energy dissipation unit and the second-stage metal shearing type energy dissipation unit, namely the total hysteresis curve.
The hierarchical energy dissipation friction metal shearing composite energy dissipater overcomes the defect of insufficient rigidity of a single-stage friction energy dissipater after yielding, and the friction energy dissipation unit and the metal shearing energy dissipation unit are respectively used as a first-stage energy dissipation device and a second-stage energy dissipation device. When earthquake input occurs, the friction energy dissipation unit enters a working state, the structural earthquake reaction and the interlayer deformation are increased along with the increase of the earthquake input, and the metal shearing energy dissipation unit has a certain compensation effect on the rigidity of a main structural layer, so that the aim of multi-stage earthquake resistance is fulfilled. The hierarchical energy dissipation friction metal shearing composite energy dissipater well utilizes the energy dissipation mechanism and the product characteristics of the friction energy dissipation unit and the metal shearing type energy dissipation unit, can better adapt to the structural energy dissipation requirements under the action of earthquakes of different levels, can provide more comprehensive protection, and is a damping product with better performance. The hierarchical energy dissipation friction metal shearing composite energy dissipater comprehensively utilizes the energy dissipation mechanism and the product characteristics of the friction energy dissipation unit and the metal shearing type energy dissipation unit, can better adapt to the structural energy dissipation requirements under the earthquake action of different levels, can provide more comprehensive protection, and is a damping product with better performance.
The above-described embodiments should not be construed as limiting the scope of the invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions can occur, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A hierarchical energy-consuming friction-metal shearing composite energy dissipater is characterized by comprising:
an upper base (10) and a lower base (20) which are oppositely arranged at intervals and are parallel to each other;
a friction energy dissipation unit (30) and a metal shearing energy dissipation unit (40) which are arranged between the upper base (10) and the lower base (20) in parallel;
and the spacing between each limiting device (50) and the outer surface of the metal shearing energy dissipation unit (40) is equal to the deformation of the second-stage metal shearing energy dissipation unit when the second-stage metal shearing energy dissipation unit enters a working state.
2. A hierarchical energy dissipating friction metal shear composite energy dissipater according to claim 1, characterized in that the energy dissipating direction of the friction energy dissipating units (30) is the same as the energy dissipating direction of the metal shear energy dissipating units (40).
3. A hierarchical energy dissipating friction metal shear composite energy dissipater according to claim 1, characterized in that the friction energy dissipating unit (30) comprises:
the middle steel plate (301) is fixedly connected with one of the upper base (10) or the lower base (20), and the middle steel plate (301) is provided with a plurality of first through holes (303) distributed in an array;
the pair of friction plates (302) are arranged close to two side faces of the middle steel plate (301), the pair of friction plates (302) are fixedly connected with the other one of the upper base (10) or the lower base (20), the friction plates (302) are provided with a plurality of second through holes (304) distributed in an array mode, and the plurality of second through holes (304) correspond to the plurality of first through holes (303) in position;
and the plurality of pre-tightening bolts penetrate through the plurality of first through holes (303) and the plurality of second through holes (304) so as to realize connection of the middle steel plate (301) and the pair of friction plates (302).
4. A graded dissipative frictional metal shear composite dissipater according to claim 3, wherein the middle steel plate (301) is connected with one of the upper base (10) or the lower base (20) by bolting and the pair of friction plates (302) is connected with the other of the upper base (10) or the lower base (20) by welding.
5. The hierarchical energy dissipating friction metal shear composite energy dissipater of claim 4, further comprising:
a pair of clamping and connecting steel plates (601) arranged on the upper base (10) or the lower base (20) and capable of clamping the upper end part or the lower end part of the middle steel plate (301) of the friction energy dissipation unit (30), wherein the pair of clamping and connecting steel plates (601) are provided with a plurality of third through holes (602) distributed in an array;
a plurality of fourth through holes (305) which are arranged at the upper end part or the lower end part of the middle steel plate (301) and distributed in an array manner, wherein the positions of the plurality of fourth through holes (305) correspond to the positions of the plurality of third through holes (602);
and a plurality of connecting bolts penetrating through the third through hole (602) and the fourth through holes (305) to connect the intermediate steel plate (301) with the pair of clamping connecting steel plates (601).
6. A hierarchical dissipative frictional metal shear composite dissipater according to claim 1, characterized in that the metal shear dissipater unit (40) comprises:
the upper connecting plate (401) and the lower connecting plate (402) are arranged at intervals and are parallel to each other, the upper connecting plate (401) is fixedly connected with the upper base (10), and the lower connecting plate (402) is fixedly connected with the lower base (20);
energy dissipation web (403), first connecting plate (401), energy dissipation web (403) and second connecting plate (402) are "worker" shape and connect, and energy dissipation web (403) set up between first connecting plate (401) and second connecting plate (402).
7. A hierarchical energy dissipating friction metal shear composite energy dissipater according to claim 6,
the upper connecting plate (401) is fixedly connected with the upper base (10) by bolts, and a gap is reserved between the lower connecting plate (402) and the lower base (20); alternatively, the first and second electrodes may be,
a gap is reserved between the upper connecting plate (401) and the upper base (10), and the lower connecting plate (402) is fixedly connected with the lower base (20) through bolts.
8. A graded dissipative frictional metal shear composite energy dissipater according to claim 6, wherein the metal shear energy dissipating unit (40) further comprises:
a plurality of stiffening ribs (404), the plurality of stiffening ribs (404) being symmetrically arranged on both sides of the energy dissipating web (403) with respect to the energy dissipating web (403).
9. The hierarchical energy dissipating friction metal shear composite energy dissipater according to claim 8, characterized in that a plurality of stiffeners (404) are arranged in a grid.
10. A graded dissipative frictional metal shear composite energy dissipater according to claim 6, wherein the metal shear energy dissipating unit (40) further comprises:
a pair of flange plates (405) symmetrically arranged about the energy dissipating web (403), the pair of flange plates (405) being connected perpendicular to the energy dissipating web (403) and arranged between the first connecting plate (401) and the second connecting plate (402).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114108864A (en) * | 2021-11-30 | 2022-03-01 | 江西理工大学 | Damper |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114108864A (en) * | 2021-11-30 | 2022-03-01 | 江西理工大学 | Damper |
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