CN206189977U - Grading yield type mild steel damper - Google Patents

Grading yield type mild steel damper Download PDF

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Publication number
CN206189977U
CN206189977U CN201621277035.0U CN201621277035U CN206189977U CN 206189977 U CN206189977 U CN 206189977U CN 201621277035 U CN201621277035 U CN 201621277035U CN 206189977 U CN206189977 U CN 206189977U
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CN
China
Prior art keywords
steel disc
steel
connecting plate
outside
upper junction
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Expired - Fee Related
Application number
CN201621277035.0U
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Chinese (zh)
Inventor
王威
李艳超
张龙旭
高敬宇
李元刚
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Xian University of Architecture and Technology
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Xian University of Architecture and Technology
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Priority to CN201621277035.0U priority Critical patent/CN206189977U/en
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Publication of CN206189977U publication Critical patent/CN206189977U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model belongs to civil engineering antidetonation and shock attenuation field relate to grading yield type mild steel damper, and the upper and lower both ends of its inlayer arc mild steel power consumption steel sheet are connected respectively under inside steel sheet upper junction plate and inside steel sheet on the connecting plate, and the upper and lower both ends of outer arc mild steel power consumption steel sheet are connected respectively externally under steel sheet upper junction plate and the outside steel sheet on the connecting plate, the connecting plate is connected for wholly setting up in the cavity by the connecting plate enclosed under the power consumption of outer arc mild steel steel sheet, outside steel sheet upper junction plate and the outside steel sheet under the power consumption of inlayer arc mild steel steel sheet, inside steel sheet upper junction plate and the inside steel sheet, all be equipped with the spring that is used for the biography to do all can between the lower part of outside steel sheet upper junction plate and the upper portion of inside steel sheet upper junction plate and under the outside steel sheet under upper portion and the inside steel sheet of connecting plate between the lower part of connecting plate, two -layer damped design passes power through the spring inside and outside the adoption, has realized attenuator energy dissipation shock attenuation target stage by stage, has overcome the single shortcoming of traditional attenuator shock attenuation level.

Description

Grading yield type mild steel damper
【Technical field】
The utility model belongs to the metal in civil engineering antidetonation and field of shock absorption, more particularly to structural seismic control system Energy-consumption damper, specifically a kind of grading yield type mild steel damper that can be used for shear wall corner, suspension column.
【Background technology】
Metal energy-dissipation damper is deformed come consumed energy using the plasticity hysteresis of metal multi-form.Because metal is entering Entering has good hysteretic characteristic after mecystasis, and big energy is absorbed in elastoplasticity hysteresis deformation process, thus by with To manufacture the energy dissipative device of different type and construction.Axial surrender type, shear yielding type, bending can be divided into from stress form Surrender type and torque yield type damper.The representativeness of product is formed:It is X-type and triangle energy consumer, torsion beam energy consumer, curved Curved beam energy consumer, U-shaped steel plate damper, rod iron energy consumer, Behavior of Circular Ring Energy Dissipator, double Behavior of Circular Ring Energy Dissipator, Behavior of Circular Ring Energy Dissipator of putting more energy into etc.. Compared to its viscoelastic type, friction-type, the other types dampers such as stagnant liquid-type are caused, metal damper easy processing, Hysteresis Behavior are steady Determine, be easily changed, cost and maintenance cost it is cheap, therefore be widely used in seismic hardening and the reparation field of engineering structure.
The most planform of metal energy-dissipation damper being currently known is single, and seismic force is smaller, not up to damper surrender During stress, though damper has displacement, still under elastic stage, seismic energy is dissipated by agent structure, causes structural damage, is hindered Buddhist nun's device is not played should effect.Under big shake, plasticity power consumption state, earthquake are just integrally entered when suffered stress is slightly larger than yield stress After must all change, economy is poor.And earthquake is generally accompanied with the seismic sequence of principal earthquake, aftershock or group shake, and aftershock is most Follow closely after principal earthquake and occur soon, and aftershock earthquake magnitude is often larger, perdurabgility is long, therefore researches and develops new energy-consumption damper stage by stage As the task of top priority.
【Utility model content】
To solve problems of the prior art, the purpose of this utility model is to provide surrender type mild steel resistance stage by stage Buddhist nun's device, the damper can energy-dissipating and shock-absorbing stage by stage, overcome the single shortcoming of conventional damper damping level.
Grading yield type mild steel damper, including several internal layer arc mild-steel energy-consumption steel discs and several outer layer arcs Mild-steel energy-consumption steel disc, the upper and lower ends of internal layer arc mild-steel energy-consumption steel disc are connected to internal steel disc upper junction plate and internal steel On piece lower connecting plate, the upper and lower ends of outer layer arc mild-steel energy-consumption steel disc are connected to outside steel disc upper junction plate and outside steel On piece lower connecting plate;
Internal layer arc mild-steel energy-consumption steel disc, internal steel disc upper junction plate and internal steel disc lower connecting plate are connected as entirety and set Put in the cavity surrounded by outer layer arc mild-steel energy-consumption steel disc, outside steel disc upper junction plate and outside steel disc lower connecting plate;
Connected between the top of the bottom of outside steel disc upper junction plate and internal steel disc upper junction plate, and under outside steel disc The spring for power transmission is equipped between the bottom of the top of plate and internal steel disc lower connecting plate;
Outside steel disc upper junction plate, outside steel disc lower connecting plate, internal steel disc upper junction plate, internal steel disc lower connecting plate and Spring is coaxially disposed;The top of internal layer arc mild-steel energy-consumption steel disc and outer layer arc mild-steel energy-consumption steel disc is outwards set;
Internal layer arc mild-steel energy-consumption steel disc and outer layer arc mild-steel energy-consumption steel disc are respectively along internal steel disc upper junction plate and outer Portion's steel disc upper junction plate it is circumferentially disposed.
The top of the outside steel disc upper junction plate and the bottom of outside steel disc lower connecting plate be connected to upper bed-plate and Lower bottom base, and be detachably connected by keyway and fastener structure.
The keyway and fastener structure are the draw-in groove for including fastener and being adapted with fastener, outside steel disc upper junction plate it is upper The bottom of portion and outside steel disc lower connecting plate is provided with fastener, and the bottom of upper bed-plate and the top of lower bottom base are provided with card Groove, draw-in groove crosses upper bed-plate or lower bottom base.
Keyway between the upper bed-plate and outside steel disc upper junction plate and lower bottom base and outside steel disc lower connecting plate and The latch for crossing keyway and fastener structure is provided with fastener structure, latch is used for respectively to upper bed-plate and outside steel disc upper junction plate And the spacing fixation between lower bottom base and outside steel disc lower connecting plate.
Connect under the outside steel disc upper junction plate, outside steel disc lower connecting plate, internal steel disc upper junction plate and internal steel disc Fishplate bar is one end diameter greatly, the less ladder circle column construction of other end diameter, the two ends of outer layer arc mild-steel energy-consumption steel disc It is connected with the path section on outside steel disc upper junction plate and outside steel disc lower connecting plate respectively and is offseted with the end face of big footpath section, it is interior The two ends of layer arc mild-steel energy-consumption steel disc connect with the path section on internal steel disc upper junction plate and internal steel disc lower connecting plate respectively Connect and offseted with the end face of big footpath section.
The center of the bottom of the outside steel disc upper junction plate and the center on outside steel disc lower connecting plate top Offer the deep gouge for accommodating spring end.
Described outer layer arc mild-steel energy-consumption steel disc, outside steel disc upper junction plate and outside steel disc lower connecting plate are welding Integrative-structure, the one knot of internal layer arc mild-steel energy-consumption steel disc, internal steel disc upper junction plate and internal steel disc lower connecting plate welding The top of structure, the bottom of outside steel disc upper junction plate and internal steel disc upper junction plate is welded with both ends of the spring respectively, outside steel disc Welded with both ends of the spring respectively the bottom of the top of lower connecting plate and internal steel disc lower connecting plate.
The utility model has the advantages that:
The upper and lower ends of internal layer arc mild-steel energy-consumption steel disc of the present utility model are connected to internal steel disc upper junction plate On internal steel disc lower connecting plate, the upper and lower ends of outer layer arc mild-steel energy-consumption steel disc are connected to outside steel disc upper junction plate On outside steel disc lower connecting plate, internal layer arc mild-steel energy-consumption steel disc, internal steel disc upper junction plate and internal steel disc lower connecting plate It is connected as entirety and is arranged on by outer layer arc mild-steel energy-consumption steel disc, outside steel disc upper junction plate and outside steel disc lower connecting plate institute In the cavity for surrounding, the inside and outside two-layer arc mild-steel energy-consumption steel disc of grading yield type mild steel damper of the present utility model is formed Design;
By between the top of the bottom of outside steel disc upper junction plate and internal steel disc upper junction plate, and outside steel disc The spring for power transmission is respectively provided between the bottom of the top of lower connecting plate and internal steel disc lower connecting plate so that inside and outside two-layer arc Shape mild-steel energy-consumption steel disc can carry out power transmission by upper and lower two springs, and then realize the energy-dissipating and shock-absorbing stage by stage of damper Target, overcomes the single shortcoming of conventional damper damping level;
By the quantity, width and the thickness that adjust internal layer arc mild-steel energy-consumption steel disc and outer layer arc mild-steel energy-consumption steel disc Degree can produce the damper of different initial stiffnesses and energy dissipation capacity.
Further, the utility model is in the top of outside steel disc upper junction plate and the lower part of outside steel disc lower connecting plate Upper bed-plate and lower bottom base are not detachably connected by keyway and fastener structure, are easy to re-replace damper after shake, after shake, By outer layer arc mild-steel energy-consumption steel disc, outside steel disc upper junction plate, outside steel disc lower connecting plate, internal layer arc mild-steel energy-consumption steel Piece, internal steel disc upper junction plate, internal steel disc lower connecting plate and spring as overall structure together from upper bed-plate and lower bottom base it Between remove, upper bed-plate and lower bottom base are retained in original installation place, it is only necessary to which new above-mentioned overall structure is arranged on upper bottom Between seat and lower bottom base, therefore, damper replacing easy to install of the present utility model, to building function and appearance effects compared with It is small.
Further, the utility model connects under upper bed-plate and outside steel disc upper junction plate and lower bottom base with outside steel disc The latch for crossing keyway and fastener structure is set at the keyway and fastener structure between fishplate bar, and latch can be used for respectively to upper bottom Spacing fixation between seat and outside steel disc upper junction plate and lower bottom base and outside steel disc lower connecting plate, realizes to damper Fixed installation.
Further, the outside steel disc upper junction plate of damper of the present utility model, outside steel disc lower connecting plate, internal steel Piece upper junction plate and internal steel disc lower connecting plate are one end diameter greatly, the less ladder circle column construction of other end diameter, outward The two ends of layer arc mild-steel energy-consumption steel disc connect with the path section on outside steel disc upper junction plate and outside steel disc lower connecting plate respectively Connect and offseted with the end face of big footpath section, the two ends of internal layer arc mild-steel energy-consumption steel disc respectively with internal steel disc upper junction plate and inside Path section on steel disc lower connecting plate is connected and offseted with the end face of big footpath section, because damper of the present utility model is for holding It is stressed, therefore upper and lower connecting plate is set to ladder circle column construction so that the end of steel disc connects with upper and lower connecting plate Reliability is connect, and Joint failure is not easily caused in loading process so that damper structure stabilization of the present utility model, durability It is good.
Further, center and outside steel of the damper of the present utility model in the bottom of outside steel disc upper junction plate The center on piece lower connecting plate top offers the deep gouge for accommodating spring end, can either be ensured by opening up deep gouge The installation of spring stabilization, additionally it is possible to ensure outside steel disc upper junction plate, outside steel disc lower connecting plate, internal steel disc upper junction plate, Axiality between internal steel disc lower connecting plate and spring, and then ensure that the power transmission effect of spring.
The utility model is set in the region of the destructibles such as shear wall corner, suspension column, guiding seismic energy concentrates on this reality With on new damper, can effectively protect agent structure to exempt from destruction, damper is changed after shake, such that it is able to fast The function of quick-recovery structure, can solve safety issue of the building structure under geological process, tool as energy-dissipating and shock-absorbing component There is a simple structure, good endurance, replacing easy to install, to building function and the less feature of appearance effects.
【Brief description of the drawings】
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the first profile of the present utility model;
Fig. 3 is the second profile of the present utility model;
Fig. 4 is front view of the present utility model;
Fig. 5 is side view of the present utility model;
Fig. 6 is top view of the present utility model;
The structural representation during use in the first case of Fig. 7 the utility model;
Structural representation when Fig. 8 is the utility model use in another scenario.
Wherein, 1- upper bed-plates, 1-1- lower bottom bases, 1-2- draw-in grooves, 2- latches, 3- outsides steel disc upper junction plate, 3-1- fasteners, 3-2- outsides steel disc lower connecting plate, 3-3- deep gouges, 4- springs, 5- inside steel disc upper junction plate, 5-1- inside steel disc lower connecting plate, 6 is outer layer arc mild-steel energy-consumption steel disc, and 7 is internal layer arc mild-steel energy-consumption steel disc, 8- shear walls, 9- dampers.
【Specific embodiment】
Come to be described further the utility model below in conjunction with the accompanying drawings.
As shown in Figures 1 to 6, grading yield type mild steel damper of the present utility model, including several internal layer arcs Mild-steel energy-consumption steel disc 7 and several outer layer arc mild-steel energy-consumption steel discs 6, the upper and lower ends point of internal layer arc mild-steel energy-consumption steel disc 7 Be not connected on internal steel disc upper junction plate 5 and internal steel disc lower connecting plate 5-1, outer layer arc mild-steel energy-consumption steel disc 6 it is upper and lower Two ends are connected on outside steel disc upper junction plate 3 and outside steel disc lower connecting plate 3-2;
Internal layer arc mild-steel energy-consumption steel disc 7, internal steel disc upper junction plate 5 and inside steel disc lower connecting plate 5-1 are connected as whole Body and being arranged on is enclosed by outer layer arc mild-steel energy-consumption steel disc 6, outside steel disc upper junction plate 3 and outside steel disc lower connecting plate 3-2 Into cavity in;
Connect between the top of the bottom of outside steel disc upper junction plate 3 and internal steel disc upper junction plate 5, and under outside steel disc The spring 4 for power transmission is equipped between the bottom of the top of fishplate bar 3-2 and internal steel disc lower connecting plate 5-1;
Connect under outside steel disc upper junction plate 3, outside steel disc lower connecting plate 3-2, internal steel disc upper junction plate 5, internal steel disc Fishplate bar 5-1 and spring 4 are coaxially disposed;The top of internal layer arc mild-steel energy-consumption steel disc 7 and outer layer arc mild-steel energy-consumption steel disc 6 is outside Set;
Internal layer arc mild-steel energy-consumption steel disc 7 and outer layer arc mild-steel energy-consumption steel disc 6 are respectively along the internal He of steel disc upper junction plate 5 Outside steel disc upper junction plate 3 it is circumferentially disposed, internal layer arc mild-steel energy-consumption steel disc 7 and outer layer arc mild-steel energy-consumption steel disc are being set When 6, each internal layer arc mild-steel energy-consumption steel disc 7 spacing circumferentially and each outer layer arc mild-steel energy-consumption steel disc 6 circumferentially between Depending on the stressing conditions according to damper installation site are needed.
As shown in Figures 2 and 3, on the center of the bottom of outside steel disc upper junction plate 3 and outside steel disc lower connecting plate 3-2 The center in portion offers the deep gouge 3-3 for accommodating spring end, and spring stabilization can either be ensured by opening up deep gouge Installation, additionally it is possible to ensure outside steel disc upper junction plate, outside steel disc lower connecting plate, internal steel disc upper junction plate, internal steel disc Axiality between lower connecting plate and spring, and then ensure that the power transmission effect of spring.
Outer layer arc mild-steel energy-consumption steel disc 6, outside steel disc upper junction plate 3 and outside steel disc lower connecting plate 3-2 are welding Integrative-structure, the one of internal layer arc mild-steel energy-consumption steel disc 7, internal steel disc upper junction plate 5 and internal steel disc lower connecting plate 5-1 welding The top of body structure, the bottom of outside steel disc upper junction plate 3 and internal steel disc upper junction plate 5 is welded with both ends of the spring respectively, outward Welded with both ends of the spring respectively the bottom of the top of portion steel disc lower connecting plate 3-2 and internal steel disc lower connecting plate 5-1.
As Figure 1-5, in the top of outside steel disc upper junction plate 3 and the bottom difference of outside steel disc lower connecting plate 3-2 Upper bed-plate 1 and lower bottom base 1-1 are connected with, and are detachably connected by keyway and fastener structure;
The keyway and fastener structure are the draw-in groove 1-2 for including fastener 3-1 and being adapted with fastener 3-1, are connected on outside steel disc The bottom of the top of fishplate bar 3 and outside steel disc lower connecting plate 3-2 is provided with fastener 3-1, the bottom of upper bed-plate 1 and lower bottom base 1- 1 top is provided with draw-in groove 1-2, and draw-in groove 1-2 crosses upper bed-plate 1 or lower bottom base 1-1, between fastener setting up and down and blocks It is mutually parallel between groove;
Between upper bed-plate 1 and outside steel disc upper junction plate 3 and lower bottom base 1-1 and outside steel disc lower connecting plate 3-2 The latch 2 for crossing keyway and fastener structure is provided with keyway and fastener structure, latch 2 crosses draw-in groove and fastener, can be respectively It is spacing solid to being carried out between upper bed-plate 1 and outside steel disc upper junction plate 3 and lower bottom base 1-1 and outside steel disc lower connecting plate 3-2 It is fixed.
As Figure 1-5, outside steel disc upper junction plate 3, outside steel disc lower connecting plate 3-2, the internal and of steel disc upper junction plate 5 Internal steel disc lower connecting plate 5-1 is one end diameter greatly, the less ladder circle column construction of other end diameter, outer layer arc mild steel Consume energy steel disc 6 two ends be connected with the path section on outside steel disc upper junction plate 3 and outside steel disc lower connecting plate 3-2 respectively and with The end face of big footpath section offsets, the two ends of internal layer arc mild-steel energy-consumption steel disc 7 respectively with internal steel disc upper junction plate 5 and inside steel disc Path section on lower connecting plate 5-1 is connected and offseted with the end face of big footpath section.
As shown in Figure 7 and Figure 8, resistance of the present utility model is set by the region of the destructibles such as shear wall corner, suspension column Buddhist nun's device 9, guiding seismic energy concentrates on damper of the present utility model, can effectively protect agent structure to exempt from destruction, after shake Changed to changing part, such that it is able to the function of fast quick-recovery structure, building knot can be solved as energy-dissipating and shock-absorbing component Safety issue of the structure under geological process.
The design of the utility model two-layer arc mild-steel energy-consumption steel disc inside and outside, energy dissipating subtracts stage by stage to realize damper The target of shake, and with simple structure, good endurance, replacing easy to install, to building function and the less feature of appearance effects.

Claims (7)

1. grading yield type mild steel damper, it is characterised in that including several internal layers arc mild-steel energy-consumption steel disc (7) and if Dry outer layer arc mild-steel energy-consumption steel disc (6), the upper and lower ends of internal layer arc mild-steel energy-consumption steel disc (7) are connected to internal steel On piece upper junction plate (5) and internal steel disc lower connecting plate (5-1), the upper and lower ends difference of outer layer arc mild-steel energy-consumption steel disc (6) It is connected on outside steel disc upper junction plate (3) and outside steel disc lower connecting plate (3-2);
Internal layer arc mild-steel energy-consumption steel disc (7), internal steel disc upper junction plate (5) and internal steel disc lower connecting plate (5-1) are connected as Entirety is simultaneously arranged on by outer layer arc mild-steel energy-consumption steel disc (6), outside steel disc upper junction plate (3) and outside steel disc lower connecting plate In the cavity that (3-2) is surrounded;
Connect between the top of the bottom of outside steel disc upper junction plate (3) and internal steel disc upper junction plate (5), and under outside steel disc The spring (4) for power transmission is equipped between the bottom of the top of fishplate bar (3-2) and internal steel disc lower connecting plate (5-1);
Under outside steel disc upper junction plate (3), outside steel disc lower connecting plate (3-2), internal steel disc upper junction plate (5), internal steel disc Connecting plate (5-1) and spring (4) are coaxially disposed;Internal layer arc mild-steel energy-consumption steel disc (7) and outer layer arc mild-steel energy-consumption steel disc (6) Top outwards set;
Internal layer arc mild-steel energy-consumption steel disc (7) and outer layer arc mild-steel energy-consumption steel disc (6) are respectively along internal steel disc upper junction plate (5) It is circumferentially disposed with outside steel disc upper junction plate (3).
2. grading yield type mild steel damper according to claim 1, it is characterised in that connected on the outside steel disc The bottom of the top of plate (3) and outside steel disc lower connecting plate (3-2) is connected to upper bed-plate (1) and lower bottom base (1-1), and It is detachably connected by keyway and fastener structure.
3. grading yield type mild steel damper according to claim 2, it is characterised in that the keyway and fastener structure The draw-in groove (1-2) being adapted including fastener (3-1) and with fastener (3-1), the top of outside steel disc upper junction plate (3) and outside steel The bottom of piece lower connecting plate (3-2) is provided with fastener (3-1), and the bottom of upper bed-plate (1) and the top of lower bottom base (1-1) are all provided with Draw-in groove (1-2) is equipped with, draw-in groove (1-2) crosses upper bed-plate (1) or lower bottom base (1-1).
4. the grading yield type mild steel damper according to Claims 2 or 3, it is characterised in that the upper bed-plate (1) With the keyway and fastener knot between outside steel disc upper junction plate (3) and lower bottom base (1-1) and outside steel disc lower connecting plate (3-2) It is provided with the latch (2) for crossing keyway and fastener structure at structure, latch (2) on upper bed-plate (1) and outside steel disc for respectively to connecting Spacing fixation between fishplate bar (3) and lower bottom base (1-1) and outside steel disc lower connecting plate (3-2).
5. grading yield type mild steel damper according to claim 1, it is characterised in that connected on the outside steel disc Plate (3), outside steel disc lower connecting plate (3-2), internal steel disc upper junction plate (5) and internal steel disc lower connecting plate (5-1) are one End diameter is big, the less ladder circle column construction of other end diameter, the two ends of outer layer arc mild-steel energy-consumption steel disc (6) respectively with outward Path section in portion's steel disc upper junction plate (3) and outside steel disc lower connecting plate (3-2) is connected and offseted with the end face of big footpath section, interior The two ends of layer arc mild-steel energy-consumption steel disc (7) respectively with internal steel disc upper junction plate (5) and inside steel disc lower connecting plate (5-1) on Path section connection and with big footpath section end face offset.
6. grading yield type mild steel damper according to claim 1, it is characterised in that connected on the outside steel disc The center on the center of the bottom of plate (3) and outside steel disc lower connecting plate (3-2) top is offered for accommodating bullet The deep gouge (3-3) of spring end.
7. grading yield type mild steel damper according to claim 1, it is characterised in that described outer layer arc mild steel Power consumption steel disc (6), outside steel disc upper junction plate (3) and the integrative-structure that outside steel disc lower connecting plate (3-2) is welding, internal layer arc The integrative-structure of shape mild-steel energy-consumption steel disc (7), internal steel disc upper junction plate (5) and internal steel disc lower connecting plate (5-1) welding, outward The top of the bottom in portion's steel disc upper junction plate (3) and internal steel disc upper junction plate (5) is welded with both ends of the spring respectively, outside steel disc Welded with both ends of the spring respectively the bottom of the top of lower connecting plate (3-2) and internal steel disc lower connecting plate (5-1).
CN201621277035.0U 2016-11-25 2016-11-25 Grading yield type mild steel damper Expired - Fee Related CN206189977U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106639469A (en) * 2016-11-25 2017-05-10 西安建筑科技大学 Phased yield type mild steel damper
CN110499834A (en) * 2019-08-29 2019-11-26 招商局重庆交通科研设计院有限公司 A kind of modular removable steel damper
CN111364635A (en) * 2020-03-18 2020-07-03 北京建筑大学 Multi-disaster and multi-performance target-oriented multi-yield-point metal shear damper

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106639469A (en) * 2016-11-25 2017-05-10 西安建筑科技大学 Phased yield type mild steel damper
CN106639469B (en) * 2016-11-25 2022-01-18 西安建筑科技大学 Staged yield type mild steel damper
CN110499834A (en) * 2019-08-29 2019-11-26 招商局重庆交通科研设计院有限公司 A kind of modular removable steel damper
CN111364635A (en) * 2020-03-18 2020-07-03 北京建筑大学 Multi-disaster and multi-performance target-oriented multi-yield-point metal shear damper
CN111364635B (en) * 2020-03-18 2021-06-18 北京建筑大学 Multi-disaster and multi-performance target-oriented multi-yield-point metal shear damper

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Granted publication date: 20170524

Termination date: 20191125