CN112252509A - Assembled shear type damper with optimized shape and staged yield energy dissipation mechanism - Google Patents
Assembled shear type damper with optimized shape and staged yield energy dissipation mechanism Download PDFInfo
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- CN112252509A CN112252509A CN202011267777.6A CN202011267777A CN112252509A CN 112252509 A CN112252509 A CN 112252509A CN 202011267777 A CN202011267777 A CN 202011267777A CN 112252509 A CN112252509 A CN 112252509A
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- energy dissipation
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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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- Buildings Adapted To Withstand Abnormal External Influences (AREA)
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Abstract
The invention discloses a shape-optimized assembled shear type damper with a staged yield energy consumption mechanism, which comprises: the energy dissipation device comprises an in-plane deformation energy dissipation piece, an out-plane deformation energy dissipation piece, a first connecting plate and a second connecting plate, wherein the first connecting plate and the second connecting plate are arranged in parallel, and the in-plane deformation energy dissipation piece and the out-plane deformation energy dissipation piece are fixedly arranged between the first connecting plate and the second connecting plate; the in-plane deformation energy dissipation pieces are provided with a plurality of through holes in an array mode in the length direction, the through holes are of a structure with the middle gradually converging towards two ends, the two ends of the through holes respectively face the first connecting plate and the second connecting plate, two out-of-plane deformation energy dissipation pieces which are symmetrical with respect to the in-plane deformation energy dissipation pieces are arranged in the middle of every two adjacent through holes, and reserved seams exist between the out-of-plane deformation energy dissipation pieces and the in-plane deformation energy dissipation pieces. The damper has the beneficial effects that the edge shapes of the in-plane deformation energy dissipation sheet and the out-of-plane deformation energy dissipation sheet of the damper are optimized, so that the stress distribution is more uniform, and the ductility is better.
Description
Technical Field
The invention relates to the technical field of structural engineering earthquake resistance, in particular to an assembled shear type damper with an optimized shape and a staged yield energy dissipation mechanism.
Background
In recent years, earthquakes occur frequently in China, and the earthquake damage in each time indicates that buildings are damaged in the major earthquakes, so that serious casualties and property loss are caused. Therefore, in recent years, energy dissipation and shock absorption technologies have been rapidly developed, and a damper device is added to a structural member to cause plastic deformation prior to a main structure under the action of an earthquake, thereby absorbing a large amount of earthquake energy and greatly reducing damage to the main structure. However, for most shear type metal dampers, the energy consumption capability is insufficient, the ductility is not enough, and the energy consumption form is too single.
Therefore, how to provide a fabricated shear type damper with a staged yield energy dissipation mechanism with good energy dissipation performance, good ductility and various energy dissipation forms and optimized shapes is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a shape optimized staged yield energy dissipation mechanism fabricated shear-type damper, which is intended to overcome the above-mentioned drawbacks.
In order to achieve the purpose, the invention adopts the following technical scheme:
a shape optimized, staged yield energy dissipation mechanism fabricated shear-type damper, comprising: the planar energy dissipation device comprises an in-plane deformation energy dissipation piece, an out-of-plane deformation energy dissipation piece, a first connecting plate and a second connecting plate, wherein the first connecting plate and the second connecting plate are arranged in parallel, and the in-plane deformation energy dissipation piece and the out-of-plane deformation energy dissipation piece are fixedly arranged between the first connecting plate and the second connecting plate;
the in-plane deformation energy dissipation pieces are provided with a plurality of through holes in an array mode in the length direction, the through holes are of a structure with the middle gradually converging towards two ends, two ends of each through hole respectively face the first connecting plate and the second connecting plate, two out-of-plane deformation energy dissipation pieces which are symmetrical with the in-plane deformation energy dissipation pieces are arranged in the middle of every two adjacent through holes, and reserved seams exist between the out-of-plane deformation energy dissipation pieces and the in-plane deformation energy dissipation pieces.
Further, the contour line of the through hole is an envelope line of a first contour line constructed when a positive stress generated by a bending moment is equal to a yield stress and a second contour line constructed when a shear stress generated by a shear force is equal to the yield stress.
Furthermore, a plurality of assembly holes are formed in the first connecting plate and the second connecting plate, and the assembly holes are used for installing the first connecting plate and the second connecting plate on the supporting beam.
Further, a supporting beam is equipped with on the surface be used for with first connecting plate with the pre-buried connecting steel plate that the second connecting plate is connected, pre-buried connecting steel plate passes through a plurality of anchor assembly of pre-buried in the supporting beam are fixed a supporting beam's surface, be equipped with on the pre-buried connecting steel plate with the screw hole that the pilot hole corresponds, first connecting plate with the second connecting plate passes through the bolt fastening and is in on the pre-buried connecting steel plate.
Furthermore, the surfaces of the in-plane deformation energy dissipation sheet, the out-of-plane deformation energy dissipation sheet, the first connecting plate and the second connecting plate are all provided with antioxidant layers.
According to the technical scheme, compared with the prior art, the invention discloses the assembled shear type damper with the shape-optimized staged yield energy consumption mechanism, the edge shapes of the in-plane deformation energy consumption pieces and the out-of-plane deformation energy consumption pieces of the damper are optimized through the envelope curves of the first contour line and the second contour line which are constructed when the positive stress generated by the bending moment is equal to the yield stress and the shear stress generated by the shearing force is equal to the yield stress through the contour lines of the through holes, so that the stress distribution is more uniform, and the ductility is better; the reserved seam exists between the out-of-plane deformation energy dissipation sheet and the in-plane deformation energy dissipation sheet, the out-of-plane deformation energy dissipation sheet can limit buckling of the in-plane deformation energy dissipation sheet, the capacity of the damper for consuming energy through in-plane plastic deformation is effectively guaranteed, and the performance of the damper is improved; the first connecting plate and the second connecting plate are connected with the embedded connecting steel plate in a bolt assembly connection mode, so that the replacement form is simple, the replaceability of the energy dissipation coupling beam energy dissipation section is realized, the cost is reduced, and the function of quickly recovering the use after the earthquake is achieved; by utilizing the characteristic of large yield displacement of the out-of-plane deformation energy dissipation sheet, energy is fully dissipated under the working conditions of medium and large earthquakes, and only necessary rigidity is provided under the working condition of small earthquakes; meanwhile, all materials related to the invention are metal, and have good durability after being processed; the invention has simple form, clear mechanical mechanism and stable mechanical property; the invention is suitable for high-rise buildings and has obvious effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of a configuration of a fabricated shear-type damper with a shape optimized, phased yield energy dissipation mechanism according to the present invention;
FIG. 2 is a schematic view of a damper according to the present invention mounted on a support beam;
FIG. 3 is a schematic structural diagram of an in-plane deformation energy dissipation sheet provided by the present invention;
FIG. 4 is a schematic diagram of a first/second connecting plate structure according to the present invention;
FIG. 5 is a schematic structural diagram of an out-of-plane deformed energy dissipating sheet according to the present invention;
FIG. 6 is a schematic structural diagram of an embedded connection steel plate provided by the present invention;
FIG. 7 is a schematic structural diagram of embodiment 2 of the present invention;
FIG. 8 is a schematic structural diagram of embodiment 3 provided by the invention;
fig. 9 is a schematic structural diagram of embodiment 4 provided by the present invention.
Wherein: 1 is an in-plane deformation energy dissipation sheet; 2 is an out-of-plane deformation energy dissipation sheet; 3 is a first connecting plate; 4 is a second connecting plate; 5 is a through hole; 6 is a reserved seam; 7 is an assembly hole; 8 is a supporting beam; 9 is a pre-buried connecting steel plate; 10 is an anchoring part; 11 is a threaded hole; 12 is an upper frame beam; 13 is a concrete connecting buttress; 14 is a lower frame beam; 15 is a connecting support; and 16 is a filler wall.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-6, an embodiment of the present invention discloses a shape optimized, staged yield energy consuming mechanism fabricated shear-type damper, comprising: the in-plane deformation energy dissipation piece 1, the out-of-plane deformation energy dissipation piece 2, the first connecting plate 3 and the second connecting plate 4 are arranged in parallel, and the in-plane deformation energy dissipation piece 1 and the out-of-plane deformation energy dissipation piece 2 are fixed between the first connecting plate 3 and the second connecting plate 4 in a welding mode.
The in-plane deformation energy dissipation pieces 1 are provided with a plurality of through holes 5 in an array mode in the length direction, the through holes 5 are of a structure with the middle gradually folded towards two ends, two ends of each through hole face towards the first connecting plate 3 and the second connecting plate 4 respectively, two out-plane deformation energy dissipation pieces 2 symmetrical to the in-plane deformation energy dissipation pieces 1 are arranged in the middle of each two adjacent through holes 5, the out-plane deformation energy dissipation pieces 2 are perpendicular to the in-plane deformation energy dissipation pieces 1, a reserved seam 6 exists between each out-plane deformation energy dissipation piece 2 and the corresponding in-plane deformation energy dissipation piece 1, out-plane buckling of the in-plane deformation energy dissipation pieces 1 in the working direction of shearing can be prevented through the arrangement of the reserved seams 6, out-plane rigidity can be provided, the capacity of the damper for utilizing in-plane plastic.
In this embodiment, the contour line of the through hole 5 is a first contour line constructed when the positive stress generated by the bending moment is equal to the yield stress and a second contour line constructed when the shear stress generated by the shear force is equal to the yield stress, and then the first contour line and the second contour line are used to construct an envelope curve, which is the contour line of the through hole 5, preferably, the shape of the in-plane deformation energy dissipation sheet 1 is optimized based on the mechanics principle, so that the energy dissipation is uniform, the area contour line controlled by bending and the area contour line controlled by shearing are calculated through the material mechanics, and the envelope curves of the two are taken and added with proper chamfers to be used as the shape of the edge contour line of the; in addition, the section rigidity and the bending moment of the out-of-plane deformation energy dissipation sheet 2 are uniformly changed along the height direction, namely the out-of-plane deformation energy dissipation sheet 2 is in the optimized shape, the width of the out-of-plane deformation energy dissipation sheet 2 is adjusted to resist the bending stress of the sections at different heights, so that the out-of-plane deformation energy dissipation sheet simultaneously enters a yield state along the outer contour under the driving of shearing displacement, the stress distribution is more uniform, and the ductility is better.
Specifically, all be equipped with a plurality of pilot holes 7 on first connecting plate 3 and the second connecting plate 4, a plurality of pilot holes 7 are used for installing first connecting plate 3 and second connecting plate 4 on a supporting beam 8, a supporting beam 8 is equipped with the pre-buried connecting steel plate 9 that is used for being connected with first connecting plate 3 and second connecting plate 4 on the surface, pre-buried connecting steel plate 9 is fixed on a supporting beam 8's surface through a plurality of anchor assembly 10 of pre-buried in a supporting beam 8, be equipped with the screw hole 11 that corresponds with pilot hole 7 on the pre-buried connecting steel plate 9, first connecting plate 3 and second connecting plate 4 pass through the bolt fastening on pre-buried connecting steel plate 9. The first connecting plate 3 and the second connecting plate 4 are connected with the embedded connecting steel plate 9 in a bolt assembly connection mode, the replacement is simple, the replaceability of energy dissipation coupling beam energy dissipation sections is realized, the cost is reduced, and the function of quickly recovering the use after the earthquake is achieved
In the present embodiment, the surfaces of the in-plane deformation energy dissipation sheet 1, the out-of-plane deformation energy dissipation sheet 2, the first connection plate 3, and the second connection plate 4 are formed with an antioxidant layer by spraying an antioxidant for preventing the rusting of the steel material.
Example 2
Referring to the attached drawing 7, the assembled shear type damper with the optimized shape and the staged yield energy dissipation mechanism is assembled between layers of a frame structure, the damper is driven to work and dissipate energy by utilizing the displacement between the layers during earthquake, specifically, the first connecting plate 3 is fixedly connected with the embedded connecting steel plate 9 below the upper-layer frame beam 12 through a bolt, the second connecting plate 4 is fixedly connected with the embedded connecting steel plate 9 fixed on the concrete connecting buttress 13 through a bolt, the concrete connecting buttress 13 is positioned above the lower-layer frame beam 14, the concrete connecting buttress 13 and the lower-layer frame beam 14 are integrally cast, and the concrete connecting buttress 13 has enough bearing capacity and initial rigidity, so that the damper is prevented from being withdrawn from working before yielding. The fixing method of the pre-buried connecting steel plate 9 below the upper frame beam 12 and on the concrete connecting buttress 13 is the same as the fixing method of the pre-buried connecting steel plate 9 on the supporting beam 8 in embodiment 1, and is not described herein.
Example 3
Referring to fig. 8, a first connecting plate 3 in the assembled shear type damper with the shape optimized staged yield energy consumption mechanism is fixedly connected with an embedded connecting steel plate 9 below an upper frame beam 12 through bolts, two connecting supports 15 are arranged between the upper frame beam 12 and a lower frame beam 14, the two connecting supports 15 are arranged in a V shape, the lower ends of the connecting supports 15 are fixed at the connecting positions of the lower frame beam 14 and a vertical frame, the upper ends of the two connecting supports 15 are converged and fixedly connected, the converging position is fixedly connected with a second connecting plate 4 in the assembled shear type damper with the shape optimized staged yield energy consumption mechanism through bolts, filling walls 16 are arranged in gaps between the upper frame beam 12 and the lower frame beam 14, the connecting supports 15 are made of steel structures, the connecting supports 15 play a reinforcing role on the filling walls 16, and the assembled shear type damper with the shape optimized staged yield energy consumption mechanism starts to work temporarily, the interlayer shear displacement enables the infilled wall 16 to be filled with cracks, and the connecting supports 15 effectively restrain the cracking behavior of the infilled wall 16 and prevent the non-structural members from collapsing to hurt personnel.
Example 4
Referring to fig. 9, a plurality of assembled shear type dampers with optimized shapes and staged yield energy dissipation mechanisms are arranged between an upper frame beam 12 and a lower frame beam 14 in parallel, specifically, a first connecting plate 3 is fixedly connected with an embedded connecting steel plate 9 below the upper frame beam 12 through bolts, a second connecting plate 4 is connected with an embedded connecting steel plate 9 fixed on a concrete connecting buttress 13 through bolts, the concrete connecting buttress 13 is positioned above the lower frame beam 14, the concrete connecting buttress 13 and the lower frame beam 14 are integrally cast, in this embodiment, the upper frame rails 12 and the lower frame rails 14 are juxtaposed with two fabricated shear-type dampers of the shape optimized, phased yielding energy dissipation mechanism, when earthquake or wind vibration occurs, shearing relative displacement is generated among the layers of the frame structure, and the energy consumption is carried out by utilizing an in-plane shearing hysteresis mechanism of the energy dissipater.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A shape optimized, staged yield energy dissipation mechanism fabricated shear-type damper, comprising: the planar energy dissipation device comprises an in-plane deformation energy dissipation piece (1), an out-of-plane deformation energy dissipation piece (2), a first connecting plate (3) and a second connecting plate (4), wherein the first connecting plate (3) and the second connecting plate (4) are arranged in parallel, and the in-plane deformation energy dissipation piece (1) and the out-of-plane deformation energy dissipation piece (2) are fixedly arranged between the first connecting plate (3) and the second connecting plate (4);
the in-plane deformation energy dissipation sheet (1) is provided with a plurality of through holes (5) in an array mode in the length direction, the through holes (5) are of a structure gradually converging from the middle to two ends, the two ends of each through hole respectively face the first connecting plate (3) and the second connecting plate (4), two out-of-plane deformation energy dissipation sheets (2) symmetrical to the in-plane deformation energy dissipation sheet (1) are arranged in the middle of every two adjacent through holes (5), and a reserved seam (6) exists between each out-of-plane deformation energy dissipation sheet (2) and the in-plane deformation energy dissipation sheet (1).
2. The shape optimized staged yield energy dissipation mechanism fabricated shear-type damper according to claim 1, wherein the contour of the through-hole (5) is an envelope of both a first contour configured when a positive stress generated by a bending moment is equal to a yield stress and a second contour configured when a shear stress generated by a shear force is equal to a yield stress.
3. The shape optimized staged yield energy dissipation mechanism fabricated shear-type damper according to claim 1, wherein a plurality of assembly holes (7) are provided on each of the first connecting plate (3) and the second connecting plate (4), and the plurality of assembly holes (7) are used for mounting the first connecting plate (3) and the second connecting plate (4) on a support beam (8).
4. The shape-optimized staged yield energy consumption mechanism assembly type shear damper according to claim 2, wherein the supporting beam (8) is provided with pre-embedded connecting steel plates (9) on the surface for connecting with the first connecting plate (3) and the second connecting plate (4), the pre-embedded connecting steel plates (9) are fixed on the surface of the supporting beam (8) through a plurality of pre-embedded anchoring pieces (10) in the supporting beam (8), the pre-embedded connecting steel plates (9) are provided with threaded holes (11) corresponding to the assembling holes (7), and the first connecting plate (3) and the second connecting plate (4) are fixed on the pre-embedded connecting steel plates (9) through bolts.
5. The shape optimized phased yield energy dissipating mechanism fabricated shear-type damper according to claim 1, characterized in that the surfaces of the in-plane deformation energy dissipating fins (1), the out-of-plane deformation energy dissipating fins (2), the first connection plates (3) and the second connection plates (4) are all provided with an antioxidant layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011267777.6A CN112252509A (en) | 2020-11-13 | 2020-11-13 | Assembled shear type damper with optimized shape and staged yield energy dissipation mechanism |
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| CN202011267777.6A CN112252509A (en) | 2020-11-13 | 2020-11-13 | Assembled shear type damper with optimized shape and staged yield energy dissipation mechanism |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982708A (en) * | 2021-02-23 | 2021-06-18 | 中国地震局工程力学研究所 | Alleviate two-way metal consumer of assembled self-reset dumbbell shape of film effect |
| CN113152717A (en) * | 2021-04-02 | 2021-07-23 | 北京市建筑设计研究院有限公司 | Staged yield type mild steel damper and construction method thereof |
| CN113338467A (en) * | 2021-05-31 | 2021-09-03 | 北京市建筑设计研究院有限公司 | Hierarchical yield shear type mild steel damper and construction method thereof |
| CN114108864A (en) * | 2021-11-30 | 2022-03-01 | 江西理工大学 | Damper |
| CN114482272A (en) * | 2021-12-20 | 2022-05-13 | 青岛腾远设计事务所有限公司 | Energy-consuming and shock-absorbing assembly type beam column node |
-
2020
- 2020-11-13 CN CN202011267777.6A patent/CN112252509A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982708A (en) * | 2021-02-23 | 2021-06-18 | 中国地震局工程力学研究所 | Alleviate two-way metal consumer of assembled self-reset dumbbell shape of film effect |
| CN113152717A (en) * | 2021-04-02 | 2021-07-23 | 北京市建筑设计研究院有限公司 | Staged yield type mild steel damper and construction method thereof |
| CN113152717B (en) * | 2021-04-02 | 2022-08-02 | 北京市建筑设计研究院有限公司 | Staged yield type mild steel damper and construction method thereof |
| CN113338467A (en) * | 2021-05-31 | 2021-09-03 | 北京市建筑设计研究院有限公司 | Hierarchical yield shear type mild steel damper and construction method thereof |
| CN113338467B (en) * | 2021-05-31 | 2022-08-09 | 北京市建筑设计研究院有限公司 | Hierarchical yield shear type mild steel damper and construction method thereof |
| CN114108864A (en) * | 2021-11-30 | 2022-03-01 | 江西理工大学 | Damper |
| CN114482272A (en) * | 2021-12-20 | 2022-05-13 | 青岛腾远设计事务所有限公司 | Energy-consuming and shock-absorbing assembly type beam column node |
| CN114482272B (en) * | 2021-12-20 | 2024-04-30 | 青岛腾远设计事务所有限公司 | Energy-consuming and shock-absorbing type assembled beam column joint |
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