CN114718210B - Shearing steel plate damper with deformation amplifying function - Google Patents
Shearing steel plate damper with deformation amplifying function Download PDFInfo
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- CN114718210B CN114718210B CN202210420381.3A CN202210420381A CN114718210B CN 114718210 B CN114718210 B CN 114718210B CN 202210420381 A CN202210420381 A CN 202210420381A CN 114718210 B CN114718210 B CN 114718210B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 97
- 239000010959 steel Substances 0.000 title claims abstract description 97
- 238000010008 shearing Methods 0.000 title claims abstract description 28
- 238000005265 energy consumption Methods 0.000 claims abstract description 48
- 238000013461 design Methods 0.000 claims description 27
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 239000011229 interlayer Substances 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 claims description 3
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N Aspirin Chemical compound CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 claims 2
- 241000405070 Percophidae Species 0.000 claims 2
- 238000003698 laser cutting Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 10
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000013016 damping Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000452 restraining effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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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
- E04H9/0215—Bearing, supporting or connecting constructions specially adapted for such buildings involving active or passive dynamic mass damping systems
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0237—Structural braces with damping devices
Abstract
The invention relates to a shearing steel plate damper with a deformation amplifying function, and belongs to the technical field of damper structures. Comprises a shearing energy consumption unit, a buckling constraint unit and a rack-gear type deformation amplifying unit. The invention provides a novel shear steel plate damper with a deformation amplifying function without welding a web plate, aiming at solving the problems that the fatigue performance of the traditional shear steel plate damper is reduced due to welding stiffening ribs, the energy consumption capacity of the traditional shear steel plate damper cannot be fully utilized due to deformation limitation and the like.
Description
Technical Field
The invention relates to a shearing steel plate damper with a deformation amplifying function, and belongs to the technical field of damper structures.
Background
The earthquake disaster is one of the most serious countries in the world, and not only causes serious casualties, but also brings nonlinear acceleration and increase economic loss along with the development of the economy and society, so that the earthquake resistance of the building structure is improved, and the earthquake disaster has important political and economic significance. The energy-consumption damping technology is a leading-edge technical means for improving the earthquake resistance of a building structure, and the basic idea is that the energy-consumption damping device is arranged in the main structure, and the energy input energy of the earthquake is absorbed by the energy-consumption damping device so as to reduce the damage of the main structure, thereby improving the earthquake resistance and disaster prevention capability of the main building structure. In the energy-consuming and damping device, the shear steel plate damper has the advantages of easily available materials, high initial rigidity, stable hysteresis performance and the like, so that the shear steel plate damper is widely researched and applied.
Conventional shear steel plate dampers are typically composed of a web, left and right flanges, and upper and lower end plates, with stiffening ribs typically welded to the web to improve its stability when the web is large in size in order to prevent premature shear failure of the web. The stiffening ribs can improve the stable bearing capacity of the web, but can generate welding residual stress in the web, so that the fatigue performance and the service life of the shear steel plate damper are reduced.
In addition, the shear steel plate damper consumes earthquake input energy through the elastoplastic hysteresis deformation of the web plate, so that the larger the relative shear deformation of the upper end and the lower end of the web plate is, the more remarkable the energy consumption and shock absorption effects of the shear steel plate damper are. The relative deformation of the upper end and the lower end of the web is normally positively correlated with the interlayer deformation of the main body structure, however, the interlayer deformation of the main body structure is strictly limited by building anti-seismic design specifications, so that the energy consumption capability of the shear steel plate damper is not fully utilized and the energy consumption effect is not outstanding due to the limitation of deformation in the practical engineering application process.
Therefore, there is a need for a shear steel plate damper having a deformation amplifying function that solves the above-mentioned problems.
Disclosure of Invention
The invention provides a novel shear steel plate damper with a deformation amplifying function without welding a web plate, aiming at solving the problems that the fatigue performance of the traditional shear steel plate damper is reduced due to welding stiffening ribs, the energy consumption capacity of the traditional shear steel plate damper cannot be fully utilized due to deformation limitation and the like.
The shear steel plate damper with the deformation amplifying function is characterized by comprising a shear energy consumption unit, a buckling constraint unit and a rack-gear type deformation amplifying unit, wherein the specific structures of the three units are as follows:
the shearing energy consumption unit comprises a shearing energy consumption core plate 1 which is vertically arranged, wherein a first end plate 2 and a second end plate 3 which are horizontally arranged are respectively arranged at the upper end and the lower end of the shearing energy consumption core plate 1, and the shearing energy consumption unit is arranged on the main body structure through the second end plate 3;
the buckling restrained unit comprises two Z-shaped restrained members 4, and the two Z-shaped restrained members 4 are symmetrically arranged left and right along the length direction of the shear energy dissipation core plate 1;
the rack-gear type deformation amplifying unit comprises two first racks 8, at least one coaxial gear 9, a second rack 10 and a third end plate 11, wherein the two first racks 8 are parallel and are arranged along the length direction of the first end plate 2, the coaxial gear 9 comprises two large gears 12 which are respectively meshed with the two first racks 8, the two large gears 12 are connected into a whole through a central shaft 13 to realize synchronous rotation, two ends of the central shaft 13 are respectively arranged on the two Z-shaped constraint members 4, a small gear 14 is further arranged on the central shaft 13, a second rack 10 is meshed above the small gear 14, the second rack 10 is parallel to the two first racks 8, the second rack 10 is arranged on the third end plate 11, and the rack-gear type deformation amplifying unit is arranged on a main body structure through the third end plate 11.
Preferably, the shear energy consumption core plate 1 is formed by cutting a rectangular steel plate by laser to form a variable cross-section shape with locally reinforced two ends, wherein the height h1 of an end reinforcing region is 30-50mm, and the cross-sectional area of the end reinforcing region is at least 1.3 times larger than the minimum cross-sectional area of the middle part;
preferably, the width b of the first end plate 2 and the second end plate 3 1 The width of the main structure frame beam is the same as that of the main structure frame beam;
preferably, the bottom of the Z-shaped restraining member 4 is fixed on the second end plate 3, the length of the Z-shaped restraining member 4 is the same as that of the first end plate 2 and the second end plate 3, the Z-shaped restraining member 4 comprises two vertically arranged first steel plates 5 and third steel plates 7, a horizontally arranged second steel plate 6 is arranged between the first steel plates 5 and the third steel plates 7, and the first steel plates 5, the second steel plates 6 and the third steel plates 7 are welded into a whole;
preferably, the clearance value c=1-2 mm between the third steel plate 7 and the shear energy dissipation core plate 1;
preferably, the first steel plate 5 is provided with a pin hole for passing through the central shaft 13, and the thickness t of the first steel plate 5 2 The pressure-bearing strength between the coaxial gear central shaft 13 and the pin shaft hole is calculated and determined; width b of second steel plate 6 2 Width b of first end plate 2 1 1/2 of the thickness of the first steel plate 5; height h of third steel plate 7 3 Is smaller than the height h of the shearing energy consumption core plate 1 1 ；
Preferably, the rack-and-pinion deformation amplifying unit comprises two first racks 8, a coaxial gear 9, a second rack 10 and a third end plate 11, wherein the two first racks 8 are parallel and are installed along the length direction of the first end plate 2, the coaxial gear 9 comprises two large gears 12 which are respectively meshed with the two first racks 8, the two large gears 12 are connected into a whole through a central shaft 13 to realize synchronous rotation, a small gear 14 is installed on the central shaft 13, a second rack 10 is meshed above the small gear 14, the second rack 10 is parallel to the two first racks 8, and the first racks 8 are installed on the third end plate 11;
preferably, the ratio d of the pitch diameters of the large gear 12 and the small gear 14 2 /d 1 Namely, designing a deformation amplification coefficient alpha;
preferably, the thickness of the first end plate 2 and the second end plate 3 is not less than the thickness t of the shear energy dissipation core plate 1 1 Length l of both the first end plate 2 and the second end plate 3 1 Length l greater than shear energy consumption core plate 1 2 And let l 1 ＝l 2 +2αδ, where α is the design deformation magnification factor and δ is the body structure limiting interlayer displacement.
The shearing steel plate damper with the deformation amplifying function has reasonable process design and has the following beneficial effects:
(1) The invention not only maintains the advantages of easy material availability, large initial rigidity and the like of the traditional shearing steel plate damper, but also can efficiently consume energy and absorb shock when the deformation between the main structure layers is limited by arranging the rack-gear type deformation amplifying unit, thereby being beneficial to reducing the earthquake-proof design cost of the building structure and further improving the economic benefit.
(2) The invention can change the key mechanical property indexes such as rigidity and bearing capacity by only adjusting the diameter ratio of the large gear to the small gear in the coaxial gear under the condition that the size and the material of the shearing energy consumption core plate are kept unchanged, is convenient for standardized design and production, and is beneficial to energy conservation and emission reduction.
(3) According to the invention, the shear energy-dissipation core plate is subjected to variable cross section treatment, and the Z-shaped constraint members are arranged at the two sides of the core plate, so that buckling instability can be avoided without welding stiffening ribs, and energy dissipation can be stably generated, thereby being beneficial to improving the fatigue performance and the service life of the shear steel plate damper.
(4) When the design tonnage is large, the invention can arrange a plurality of coaxial gears between the first rack and the second rack according to the design requirement so as to reduce the design load of a single coaxial gear, thereby reducing the geometric dimension of the gear mechanism and the design and processing difficulty, and having higher design flexibility and reliability.
Drawings
Fig. 1: the invention relates to a structural schematic diagram of a shearing steel plate damper with a deformation amplifying function;
fig. 2: FIG. 1 is a cross-sectional view taken along line 2-2;
fig. 3: FIG. 1 is an exploded view;
fig. 4: the invention relates to an exploded view of a shearing energy consumption unit of a shearing steel plate damper with a deformation amplifying function;
fig. 5: an assembly drawing of the Z-shaped constraint component, the shearing energy consumption unit, the first rack and the coaxial gear;
fig. 6: an exploded view of the Z-shaped constraining member, the shear energy dissipating unit, the first rack, and the coaxial gear;
fig. 7: FIG. 6 is a sectional view taken from 1-1;
fig. 8: the invention relates to a connection diagram of a shear steel plate damper with a deformation amplifying function and a main body frame.
In the figure: 1. shearing the energy-consumption core plate; 2. a first end plate; 3. a second end plate; 4. a Z-shaped constraining member; 5. a first steel plate; 6. a second steel plate; 7. a third steel plate; 8. a first rack; 9. a coaxial gear; 10. a second rack; 11. a third end plate; 12. a large gear; 13. a central shaft; 14. a pinion gear; 15. a connecting plate; 16. and (5) a node plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
A shear steel plate damper with deformation amplifying function of the present embodiment, referring to fig. 1 to 8, includes a shear energy consumption unit, a buckling restrained unit, and a rack-and-pinion type deformation amplifying unit.
The design, processing and assembly of the shear energy dissipation unit, as shown in fig. 4, comprises a shear energy dissipation core plate 1, a first end plate 2 and a second end plate 3.
Shear energy consumption core board 1: the shear energy consumption core plate 1 is formed by cutting a rectangular steel plate by laser to form a variable cross-section shape with locally reinforced two ends, wherein the height h of an end reinforcing area 1 Preferably 30-50mm, the cross-sectional area of the end reinforcing region should be at least 1.3 times larger than the minimum cross-sectional area of the middle part to ensure that the end reinforcing region is always in an elastic stage during the whole working process so as to reliably transfer force, and the thickness t of the shear energy-consuming inner core plate is equal to or greater than the thickness t of the shear energy-consuming inner core plate 1 Total height h 2 It is determined by analytical calculations based on the design yield load and the design initial stiffness.
First end plate 2 and second end plate 3: the thickness of the first end plate 2 and the second end plate 3 should be ensured to be not less than the thickness t of the shear energy dissipating core plate 1 Length l of both the first end plate 2 and the second end plate 3 1 Should be greater than the length l of the shear energy-consuming core plate 2 And let l 1 ＝l 2 +2αδ, where α is the design deformation magnification factor, δ is the body structure limit interlayer displacement, the width b of the first end plate 2 and the second end plate 3 1 The width of the novel shear steel plate damper is preferably the same as that of the main structure frame beam so as to be convenient to position and install, bolt holes are formed in the second end plate 3, and the number and the aperture of the openings are required to be determined according to the design limit load of the novel shear steel plate damper through shear strength calculation.
Assembling the shearing energy consumption unit: the shear energy consumption core plate 1 is connected with the first end plate 2 and the second end plate 3 through welding to form a shear energy consumption unit, then 2 first racks 8 are welded on the first end plate 2, and the center distance D of the 2 first racks 8 is required to be consistent with the center distance of the large gear in the coaxial gear.
The design, machining and assembly of the buckling restrained unit and the coaxial gears are shown in fig. 5-7. (1) a Z-shaped constraining member: the Z-shaped restraining member is formed by welding a first steel plate 5, a second steel plate 6 and a third steel plate 7, and the lengths of 3 steel plates and the first end plate 2 and the second end plate 3 are kept consistent and are l 1 Under the condition of design limit displacement, the shearing energy consumption core plate 1 can still obtain the comprehensive constraint of the Z-shaped constraint component; the first steel plate 5 is provided with a pin shaft hole, and the position of the hole is according to the central shaft 13 of the coaxial gearIn the position determination, the diameter of the opening is 0.2-0.5mm larger than the shaft diameter of the coaxial gear for easy installation, the thickness t of the first steel plate 5 2 The bearing strength between the coaxial gear central shaft 13 and the pin shaft hole of the first steel plate 5 is calculated and determined; width b of second steel plate 6 2 Width b of first end plate 2 1 1/2 of the thickness of the first steel plate 5; height h of third steel plate 7 3 Should be smaller than the height h of the shear energy consumption core plate 1 Preferably, let h 3 ＝h 1 -h 2 So as to avoid the contact between the first end plate 2 and the second steel plate 6 after the shear energy consumption core plate is greatly deformed. (2) coaxial gears: determining the detail size of the coaxial gear according to the deformation magnification design requirement and the design tonnage, wherein the ratio d of the reference circle diameters of the large gear and the small gear 2 /d 1 That is, for the design deformation magnification α, the remaining detail size of the coaxial gear should be determined by strength checking according to the design limit load, and the coaxial gear is disposed at the longitudinal center position of the rack 1 and engaged with the two first racks 8 through the 2 large gears 12. (3) assembly of Z-shaped constraining members: two Z-shaped constraint members are inserted into two sides of a coaxial gear through pin shaft holes of a first steel plate 5, the positions of the Z-shaped constraint members are adjusted, and a clearance value c=1-2 mm between 2 third steel plates 7 and a shear energy-consumption core plate 1 is achieved, so that transverse expansion deformation generated by poisson effect in the working process of the shear energy-consumption core plate 1 can be effectively released, and the 2 third steel plates 7 and a second end plate 3 are welded into a whole after positioning is completed. It should be noted that, when the design tonnage is large, the novel shear steel plate damper may be provided with a plurality of coaxial gears to share the design load, so as to reduce the design and processing difficulty of the gear-rack deformation amplifying device and improve the safety redundancy, and at this time, the corresponding pin shaft hole should be reserved on the third steel plate 7.
The novel shear steel plate damper assembly is shown in figures 5 and 6. The third end plate 11 is provided with bolt holes, the number of the holes and the aperture are determined according to the design limit load, after the third end plate 11 and the second rack 10 are centered and welded, the second rack 10 is meshed with the pinion 14 in the coaxial gear, and the assembly of the novel shearing steel plate damper is completed.
The novel shear steel plate damper is connected with the main body frame as shown in fig. 8. The novel shearing steel plate damper is mainly used in a steel structure frame, and in order to facilitate post-earthquake inspection and replacement, the novel shearing steel plate damper is connected with the steel frame by bolts. Firstly, welding a connecting plate 15, a node plate 16, a steel support and the node plate 16 in a prefabrication factory to form a lower support system, then welding the lower support system to a frame column and a lower frame beam through the node plate 16 in a construction site, and finally connecting a second end plate 3 and a third end plate 11 in the novel shear steel plate damper with the connecting plate 15 and an upper frame beam through high-strength bolts respectively, thereby finally completing the installation construction of the novel shear steel plate damper. The number and diameter of the high strength bolts between the second end plate 3 and the connection plate 15 and between the third end plate 11 and the upper frame beam should be determined by strength calculation according to the design limit load.
Working principle: the two first racks 8 are welded to the first end plate 2 and then connected to the large gear 12 of the coaxial gears, and the third end plate 11 and the second rack 10 are welded integrally and then connected to the small gear 14 of the coaxial gears. After the shear steel plate damper is reliably connected with the main structure, the horizontal displacement of the second rack 10 is the same as the interlayer displacement of the main structure under the action of an earthquake, and the linear displacement of the edges of the large gear and the small gear in the coaxial gear is in direct proportion to the diameter of the gear, so that the horizontal displacement of the first end plate 2 is larger than the horizontal displacement of the second rack 10 (namely the interlayer displacement of the main structure) after the action of the coaxial gear and the first rack 8, thereby the shear energy consumption core plate can enter an elastoplastic large deformation state under the condition that the deformation of the main structure is smaller, and further the purpose of strengthening the energy consumption capacity is achieved.
Shear energy-consuming core plate buckling deformation constraint mechanism: the shear energy consumption core plate 1 and Z-shaped constraint members distributed on two sides of the shear energy consumption core plate are welded with the second end plate 3, and after shear instability occurs to the shear energy consumption core plate 1 under the action of larger horizontal displacement, buckling instability deformation of the shear energy consumption core plate can timely obtain effective constraint of the Z-shaped constraint members on two sides, so that yield energy consumption can be smoothly realized without buckling of the shear energy consumption core plate 1 even if stiffening ribs are not arranged, and the novel shear steel plate damper has the technical advantages of stable mechanical property, excellent fatigue property and the like.
Claims (7)
1. The shear steel plate damper with the deformation amplifying function is characterized by comprising a shear energy consumption unit, a buckling constraint unit and a rack-gear type deformation amplifying unit, wherein the specific structures of the three units are as follows:
the shearing energy consumption unit comprises a shearing energy consumption core plate which is vertically arranged, wherein a first end plate and a second end plate which are horizontally arranged are respectively arranged at the upper end and the lower end of the shearing energy consumption core plate, and the shearing energy consumption unit is arranged on the main body structure through the second end plate;
the buckling restrained unit comprises two Z-shaped restrained members which are symmetrically arranged left and right along the length direction of the shear energy-consumption core plate;
the rack-gear type deformation amplifying unit comprises two first racks, at least one coaxial gear, a second rack and a third end plate, wherein the two first racks are arranged at the top of the first end plate and are parallel to each other and are arranged along the length direction of the first end plate, the coaxial gear comprises two large gears which are respectively meshed with the two first racks, the two large gears are connected into a whole through a central shaft to realize synchronous rotation, two ends of the central shaft are respectively arranged on two Z-shaped constraint members, a small gear is further arranged on the central shaft, the second rack is meshed above the small gear, the second rack is parallel to the two first racks, the second rack is arranged on the third end plate, and the rack-gear type deformation amplifying unit is arranged on a main body structure through the third end plate;
the bottom of the Z-shaped constraint component is fixed on the second end plate, the length of the Z-shaped constraint component is the same as that of the first end plate and the second end plate, the Z-shaped constraint component comprises two first steel plates and three steel plates which are vertically arranged, a second steel plate which is horizontally arranged is arranged between the first steel plates and the third steel plates, and the first steel plates, the second steel plates and the third steel plates are welded into a whole.
2. The shear steel plate damper with deformation amplifying function according to claim 1, wherein the shear energy-consuming core plate is formed into a variable cross-sectional shape with both ends locally reinforced by laser cutting from a rectangular steel plate, wherein the height h1 of the end reinforcing region is 30-50mm, and the cross-sectional area of the end reinforcing region is at least 1.3 times larger than the minimum cross-sectional area of the middle part.
3. The shear steel plate damper with deformation amplifying function according to claim 1, wherein the widths of said first and second end platesb 1 The same width as the main body structure frame beam.
4. The shear steel plate damper with deformation amplifying function as in claim 1, wherein the gap value between the third steel plate and the shear energy dissipating core plate isc=1-2mm。
5. The shear steel plate damper with deformation amplifying function as in claim 1, wherein said first steel plate has pin holes for passing through the center shaft, the thickness of the first steel platet 2 The pressure-bearing strength between the central shaft of the coaxial gear and the pin shaft hole is calculated and determined; width of the second steel plateb 2 For the first end plate widthb 1 1/2 of the thickness of the first steel plate; height of third steel plateh 3 Less than the height of the shearing energy consumption core plateh 1 。
6. The shear steel damper with deformation amplifying function as in claim 1, wherein the ratio of the pitch diameters of said large gear and said small geard 2 /d 1 I.e. design deformation magnification factor。
7. The shear steel plate damper with deformation amplifying function as in claim 6, wherein the thickness of said first and second end plates is not smaller than the thickness of the shear energy dissipating core platet 1 Length of both the first and second end platesLength greater than shear energy consumption core plate>And let->Wherein->For designing the deformation magnification factor +.>Limiting interlayer displacement for the main body structure.
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| CN202210420381.3A CN114718210B (en) | 2022-04-21 | 2022-04-21 | Shearing steel plate damper with deformation amplifying function |
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| CN202210420381.3A CN114718210B (en) | 2022-04-21 | 2022-04-21 | Shearing steel plate damper with deformation amplifying function |
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| CN114718210B true CN114718210B (en) | 2023-11-21 |
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