CN109826338A - A kind of cold bending thin wall steel plate wall system of built-in friction and negative stiffness combined vibration-damping device - Google Patents
A kind of cold bending thin wall steel plate wall system of built-in friction and negative stiffness combined vibration-damping device Download PDFInfo
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- CN109826338A CN109826338A CN201910092656.3A CN201910092656A CN109826338A CN 109826338 A CN109826338 A CN 109826338A CN 201910092656 A CN201910092656 A CN 201910092656A CN 109826338 A CN109826338 A CN 109826338A
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Abstract
The invention discloses the cold bending thin wall steel plate wall systems of a kind of built-in friction and negative stiffness combined vibration-damping device, are made of metal support square bar, hinged-support, friction plate, groove profile metal plate, bolt, can, universal hinge, brace, metal spring, high-strength metal sheet, tension spring group, metal sleeve, edge column, column, guide rail beam, steel band horizontal braces, screw, shingle nail.The cold bending thin wall steel plate wall system of built-in friction and negative stiffness combined vibration-damping device is identical as common cold bending thin wall steel plate wall effect under normal circumstances；Under earthquake or wind action, passive energy dissipation is carried out by the opposite sliding of friction plate in internal friction device first, after slide displacement is more than a threshold value, the pretightning force that bolt applies makes groove profile metal plate deform to make friction damping device enter limitation locking state.Current vibration absorber occupied space is efficiently solved, wall normal work is influenced and interferes the problems such as current.
Description
Technical field
The present invention relates to the cold bending thin wall steel plate wall systems of a kind of built-in friction and negative stiffness combined vibration-damping device, in earthquake
It can sufficiently be consumed energy, be reduced by the combined vibration-damping device being arranged in cold bending thin wall steel plate wall under effect and wind action
The adverse effect generated to wall is vibrated, wall body structure dynamic response is reduced, belongs to building structure aseismatic wind resistance and vibration damping control
Field.
Background technique
Light gauge cold-formed steel shape building systems are formed using zinc-plated light gauge cold-formed steel shape keel as main load-bearing material
Structural system, be widely used in multiple countries such as China, the U.S., Japan.Light gauge cold-formed steel shape board wall is the knot
The main bearing member of structure system, carry building systems vertical load and wind load, geological process caused by level make
With.To mitigate harm of the extraneous vibration to light gauge cold-formed steel shape board wall, economic loss caused by earthquake disaster and personnel's wound are reduced
It dies, when building light gauge cold-formed steel shape house, carrying out Vibration Absorption Designing to light gauge cold-formed steel shape board wall is a work for needing to carry out
Make.
The basic principle of Vibration Absorption Designing is prolonged by taking the means for increasing structural damping ratio or reducing structural natural frequencies
It is effectively isolated geological process the natural vibration period of long structure, the ability of structure transmitting vibration is reduced, to protect main structure body not
It is damaged.Vibration absorber can be divided into from control method: passive control, active control, semi- active control, intelligent control and mixing
Five kinds of control.Currently, common vibration absorber has friction damping device, damping device, memorial alloy vibration absorber etc..
Wherein, friction damping device with its good damping result, simple structure, mechanical model it is clear, it is applied widely, easy to maintain, make
Valence is cheap to become current most popular passive dissipative damping device.
Vibration absorber is arranged in the structure, all the rigidity of structure can more or less increased, and thus leads to structure self-vibration frequency
Rate increases, so that the acceleration responsive of structure cannot be efficiently controlled.Since negative stiffness vibration absorber passes through positive Negative stiffness spring
Element in parallel reduces structural system rigidity and the structural system natural frequency of vibration, achievees the purpose that carry out vibration damping to structure, simultaneously also
Have many advantages, such as big compared with high-bearing capacity, vibration isolation range, therefore negative stiffness vibration absorber receives the extensive concern of experts and scholars simultaneously
A large amount of use has been obtained in engineering.
Current common vibration absorbers various on the market, since there are many restrictions such as volume size, arrangement, cold
Vibration absorber can not be arranged in limited space inside curved thin-walled steel plate wall.Therefore one kind is researched and developed for light gauge cold-formed steel shape house
The cold bending thin wall steel plate wall system of built-in vibration absorber is extremely important.
Summary of the invention
To solve the above problems, the present invention is based on negative rigidity principle and friction energy-dissipating principle propose a kind of built-in friction and
Cold bending thin wall steel plate wall system of negative stiffness combined vibration-damping device and preparation method thereof.It has simple structure, it is low in cost, account for
With space is small, vibration damping range is wide, does not increase the advantages that structural system rigidity.Under geological process and wind action, it is built in
Friction and negative stiffness combined vibration-damping device in cold bending thin wall steel plate wall can effectively dissipate the vibrational energy in wall body structure, avoid
Wall resonates, protection wall body structure safety.
To achieve the goals above, present invention employs following technical solutions:
A kind of cold bending thin wall steel plate wall system of built-in friction and negative stiffness combined vibration-damping device, which includes metal branch
Support square bar (1), hinged-support (2), friction plate (3), groove profile metal plate (4), bolt (5), can (6), universal hinge (7), brace
(8), metal spring (9), high-strength metal sheet (10), tension spring group (11), metal sleeve (12), edge column (13), column (14),
Guide rail beam (15), steel band horizontal braces (16), screw (17) and shingle nail (18)；
Metal support square bar (1) by the edge column (13) of hinged-support (2) and cold bending thin wall steel plate wall, guide rail beam (15) into
Row connection；Can (6) and metal support square bar (1) welding；Metal supports the centre of square bar (1) to pass through column (14), column
(14), it is arranged horizontally between edge column (13)；Steel band horizontal braces (16) are vertical with column (14), edge column (13)；Column
(14) it is connect with guide rail beam (15) by screw (17)；Shingle nail (18) is arranged by edge column (13), column (14), guide rail beam
(15) on the outside of the frame formed；
In can (6), brace (8), high-strength metal sheet (10) and the tension spring group being arranged in metal sleeve (12)
(11) it is connected by universal hinge (7), constitutes negative stiffness element；Metal spring (9) one end is connect with high-strength metal sheet, the other end
It is connect with the upper and lower top surface of can (6)；Another shorter metal support square bar (1) pass through the circular hole on can (6) top with
And metal spring (9) and high-strength metal sheet (10) are welded；The two of inner surface and metal the support square bar of groove profile metal plate (4)
Side is posted friction plate (3), and the two applies pretightning force by bolt (5) and is attached.The built-in friction and negative stiffness are compound
The cold bending thin wall steel plate wall system of vibration absorber under the action of external vibration, is played a role by friction damping device first, when reaching
To after limit displacement value, friction damping device enters limitation locking state, then plays damping effect by negative stiffness vibration absorber.
There are three pieces of friction plates (3), groove profile metal plate (4) two sides inner surface in the side of metal support square bar (1) one end respectively
There are two pieces of friction plates (3) respectively.Apply certain pretightning force to friction plate (3) by bolt (5), so that metal supports square bar
(1) when band movable friction plate (3) movement, frictional force can be generated between each piece of friction plate (3) and carry out oscillation damping and energy dissipating.
After the friction plate (3) in metal support square bar (1) and its surface slides certain displacement, with groove profile metal plate (4)
The friction plate (3) of inner surface no longer contacts, and occurs that groove profile metal plate (4) inwardly by the pretightning force that bolt (5) apply small
Deformation, makes friction energy consuming device enter limitation locking state.
Metal supports square bar (1) to drive in can (6) by brace (8), high-strength metal sheet (10), universal hinge (7), drawing
The negative stiffness element that spring group (11), metal sleeve (12) are constituted occurs movement and generates negative stiffness, is generated by metal spring (9) just rigid
Degree, the two parallel connection control the intrinsic frequency of cold bending thin wall steel plate wall near zero stiffness, and the wall natural frequency of vibration is effectively reduced, from
And effectively reduce influence of the extraneous vibration to wall.
The width of groove profile metal plate (4) is 1.5~2.5 times that metal supports square bar (1) width；The width of can (6)
It is the 1/4~3/4 of cold bending thin wall steel plate wall thickness, the diameter of top circular hole is 1.5~2 times that metal supports square bar width.
In tension spring group (11) outer cover metal sleeve (12) different there are two diameter, metal sleeve can be with tension spring group one
It rises and elongates or shortens, to ensure that axial deformation only occurs for tension spring group.
Column (14) You Lianggen channel steel forms, and there are a fixed gap among two channel steels, gap length is metal support side
1.0~1.5 times of the width of bar, so that combined vibration-damping device and wall reasonably form an integral framework, the two can be same
When construct, and the arrangement of combined vibration-damping device does not influence the normal function of wall.
Compared with prior art, advantages of the present invention is as follows:
1) a kind of cold bending thin wall steel plate wall system of built-in friction and negative stiffness combined vibration-damping device, vibration damping dress in the present invention
It sets and is arranged in steel plate wall, do not influence the external styling and normal work of wall, and can assemble simultaneously with wall, save work
Work amount and working time.
2) a kind of cold bending thin wall steel plate wall system of built-in friction and negative stiffness combined vibration-damping device in the present invention, according to negative
Rigidity Theory is effectively reduced the ability of natural frequency of structures and transmitting vibration by rigidity of structure control near zero stiffness.
3) in the present invention cold bending thin wall steel plate wall system of a kind of built-in friction and negative stiffness combined vibration-damping device, it can be achieved that
It is classified vibration damping, passive energy dissipation can be carried out by friction damping device under microvibration effect；Under biggish effect of vibration first
Damping effect is played by friction damping device, subsequent friction damping device enters limitation locking state, by negative stiffness vibration absorber
Play damping effect.
4) a kind of cold bending thin wall steel plate wall system of built-in friction and negative stiffness combined vibration-damping device in the present invention, can pass through
The material (control coefficient of friction) for controlling the quantity of negative stiffness element, the rigidity of metal spring and friction plate, keeps the present invention suitable
Area for different anti-seismic fortification intensity.
5) a kind of cold bending thin wall steel plate wall system of built-in friction and negative stiffness combined vibration-damping device in the present invention, in tension spring
Group is external to be cased with metal sleeve, it is ensured that axial deformation only occurs for tension spring group, to guarantee what negative stiffness element performance rigidity was negative
Characteristic.
6) a kind of cold bending thin wall steel plate wall system of built-in friction and negative stiffness combined vibration-damping device, construction letter in the present invention
It is single, it is easy for construction, it occupies little space, cost is relatively low compared with the vibration absorber of various other types.
Detailed description of the invention
Fig. 1 is the three-dimensional of the cold bending thin wall steel plate wall system of a kind of built-in friction of the invention and negative stiffness combined vibration-damping device
Effect picture.
Fig. 2 is the main view of the cold bending thin wall steel plate wall system of a kind of built-in friction of the invention and negative stiffness combined vibration-damping device
Figure.
Fig. 3 is the schematic cross-section of cold bending thin wall steel plate wall keel.
Fig. 4 is the schematic cross-section of cold bending thin wall steel plate wall edge column.
Fig. 5 is the schematic cross-section of cold bending thin wall steel plate wall column.
Fig. 6 is the schematic cross-section of cold bending thin wall steel plate wall guide rail beam.
Fig. 7 is the connection schematic diagram of hinged-support.
Fig. 8 is the schematic diagram of friction damping device.
Fig. 9 is the state diagram that friction damping device plays energy consumption effect.
Figure 10 is the limitation locking schematic diagram of friction damping device.
Figure 11 is the 1-1 sectional view of friction damping device.
Figure 12 is the 2-2 sectional view of friction damping device.
Figure 13 is the schematic diagram of negative stiffness vibration absorber
Figure 14 is the 1-1 sectional view of negative stiffness vibration absorber.
Figure 15 is the 2-2 sectional view of negative stiffness vibration absorber.
Figure 16 is the connection schematic diagram of tension spring group and metal sleeve.
In figure: 1-metal supports square bar, 2-hinged-supports, 3-friction plates, 4-groove profile metal plates, 5-bolts, 6-gold
Belong to box, 7-universal hinges, 8-braces, 9-metal springs, 10-high-strength metal sheets, 11-tension spring groups, 12-metal sleeves,
13-edge columns, 14-columns, 15-guide rail beams, 16-steel band horizontal braces, 17-screws, 18-shingle nails
Specific embodiment:
Embodiment 1:
The embodiment of the invention will now be described in detail with reference to the accompanying drawings.
As shown in Figure 1, being the cold bending thin wall steel plate wall of a kind of built-in friction and negative stiffness combined vibration-damping device of the invention
The embodiment of system specifically includes that metal supports square bar 1, hinged-support 2, friction plate 3, groove profile metal plate 4, bolt 5, can
6, it is universal hinge 7, brace 8, metal spring 9, high-strength metal sheet 10, tension spring group 11, metal sleeve 12, edge column 13, column 14,
Guide rail beam 15, steel band horizontal braces 16, screw 17, shingle nail 18.
Specific implementation step is as follows:
1) Vibration Absorption Designing is carried out to one of cold bending thin wall steel plate wall.Wall body keel by edge column, column, head rail beam,
Bottom guide track beam composition, junction is attached with bolt.Edge column, column, guide rail beam section form be made of channel steel,
As shown in Fig. 3,4,5, channel steel size be respectively 200mm × 110mm × 10mm, 150mm × 80mm × 10mm, 220mm ×
120mm×10mm。
2) size of metal support square bar is 30mm × 30mm, it is passed through from the gap among column, and gap width is
40mm influences the normal use of wall to guarantee that square bar will not collide or rub with column.Metal supports the material of square bar can
For steel or other metals.
3) metal support square bar one end is attached by hinged-support and edge column and head rail beam, and the two of the other end
Two layers of friction plate is posted in side respectively, and the size of the most one layer of friction plate in the inside is 30mm × 60mm × 3mm, and one layer of outside is by two pieces
Lesser friction plate composition, having a size of 30mm × 15mm × 3mm, the spacing between friction plate is equal to the width of friction plate.Friction
The material of piece can be resin, rubber, semimetal etc..
4) groove profile metal plate can be rolled by three pieces of metal plate welding or by machine, width 60mm.In groove profile
The inner surface of metal plate posts two pieces of friction plates respectively, and having a size of 30mm × 15mm × 3mm, the spacing between friction plate, which is equal to, rubs
The width of pad.Groove profile metal plate supports square bar to be connected by bolt (model M10 × 60) with the metal for posting friction plate
It connects, as shown in figure 8, and under the action of external vibration with guarantee filling friction damping by tightening the certain pretightning force of bolt application
Damping effect can be played by setting.
5) as shown in figure 13, inside can, between the metal sleeve and brace of tension spring group and its outside, brace and high
It is attached by universal hinge between strength metal sheet, between brace and can, collectively constitutes negative stiffness element.Rectangular
Body can center, two metal spring one end are connect with high-strength metal sheet, the other end respectively with top surface on can, bottom
Face connection.The rigidity of metal spring is 200N/mm, and the rigidity of tension spring is 10N/mm, shares 7 tension springs in tension spring group.
6) another metal support square bar one end and groove profile metal plate weld, the other end pass through the circular hole at the top of can with
And metal spring is connect with high-strength metal sheet.The size of can is 11cm × 8cm × 16cm, with a thickness of 10mm, material
It can be steel or other metals, the diameter of top circular hole is 45mm.
7) finally, a longer metal support square bar one end and can bottom are welded, the other end by hinged-support with
Edge column and bottom guide track beam are connected, complete to inside cold bending thin wall steel plate wall friction and negative stiffness combined vibration-damping device
Arrangement.
9) steel band horizontal braces are connected by screw with the column of steel plate wall, edge column, are then completed with steel plate to cold
The clad can of curved thin-walled steel plate wall keel works.
In this example, friction and negative stiffness combined vibration-damping device are arranged in inside cold bending thin wall steel plate wall, are efficiently solved
Vibration absorber occupies the confined space, influences wall normal work, interferes the problems such as current.In normal state, it is arranged in clod wash
Combined vibration-damping device in thin-walled steel plate wall system does not play a role, and wall only plays load-bearing effect.Make when wall bears wind load
With or when geological process, passive energy dissipation effect is played by friction damping device first, relative displacement occurs between friction plate, passes through
The pretightning force that bolt applies to generate the extraneous incoming energy of frictional force dissipation between friction plate.After reaching limit displacement value, rub
It wipes vibration absorber and enters limitation locking state, as shown in Figure 10.Then, it is played a role by negative stiffness vibration absorber.Metal support
Square bar drives high-strength metal sheet movement, so that the positive rigidity of the negative stiffness and metal spring that generate negative stiffness element is by structure
Overall stiffness control near zero stiffness, it is ensured that cold bending thin wall steel plate wall is in ultralow frequency state, effectively reduces the external world
The influence to wall is vibrated, wall is avoided to resonate.
Claims (7)
1. a kind of cold bending thin wall steel plate wall system of built-in friction and negative stiffness combined vibration-damping device, it is characterised in that: the system
Including metal support square bar (1), hinged-support (2), friction plate (3), groove profile metal plate (4), bolt (5), can (6), universal
Cut with scissors (7), brace (8), metal spring (9), high-strength metal sheet (10), tension spring group (11), metal sleeve (12), edge column
(13), column (14), guide rail beam (15), steel band horizontal braces (16), screw (17) and shingle nail (18)；
Metal support square bar (1) is connected by hinged-support (2) and edge column (13), the guide rail beam (15) of cold bending thin wall steel plate wall
It connects；Can (6) and metal support square bar (1) welding；Metal supports the centre of square bar (1) to pass through column (14), column (14),
Edge column is arranged horizontally between (13)；Steel band horizontal braces (16) are vertical with column (14), edge column (13)；Column (14) with
Guide rail beam (15) is connected by screw (17)；Shingle nail (18) is arranged by edge column (13), column (14), guide rail beam (15) group
At frame on the outside of；
In can (6), brace (8), high-strength metal sheet (10) and the tension spring group (11) being arranged in metal sleeve (12)
It is connected by universal hinge (7), constitutes negative stiffness element；Metal spring (9) one end is connect with high-strength metal sheet, the other end and gold
Belong to box (6) upper and lower top surface connection；Another shorter metal support square bar (1) passes through the circular hole and gold on can (6) top
Belong to spring (9) and high-strength metal sheet (10) to weld；The two sides of inner surface and metal the support square bar of groove profile metal plate (4)
It posts friction plate (3), the two applies pretightning force by bolt (5) and is attached；The built-in friction and negative stiffness combined vibration-damping
The cold bending thin wall steel plate wall system of device under the action of external vibration, is played a role by friction damping device first, when reaching position
After moving limit value, friction damping device enters limitation locking state, then plays damping effect by negative stiffness vibration absorber.
2. the cold bending thin wall steel plate wall of one kind built-in friction and negative stiffness combined vibration-damping device according to claim 1
System, it is characterised in that: there are three pieces of friction plates (3), groove profile metal plate (4) two sides in the side of metal support square bar (1) one end respectively
Inner surface has two pieces of friction plates (3) respectively；Apply certain pretightning force to friction plate (3) by bolt (5), so that metal supports
When square bar (1) band movable friction plate (3) moves, frictional force can be generated between each piece of friction plate (3) and carries out oscillation damping and energy dissipating.
3. the cold bending thin wall steel plate wall of one kind built-in friction and negative stiffness combined vibration-damping device according to claim 1
System, it is characterised in that: after the friction plate (3) in metal support square bar (1) and its surface slides certain displacement, with groove profile metal
The friction plate (3) of plate (4) inner surface no longer contacts, and occurs that groove profile metal plate (4) inwardly by the pretightning force that bolt (5) apply
Micro-strain makes friction energy consuming device enter limitation locking state.
4. the cold bending thin wall steel plate wall of one kind built-in friction and negative stiffness combined vibration-damping device according to claim 1
System, it is characterised in that: metal supports square bar (1) to drive in can (6) by brace (8), high-strength metal sheet (10), universal hinge
(7), movement generation negative stiffness occurs for the negative stiffness element that tension spring group (11), metal sleeve (12) are constituted, and is produced by metal spring (9)
Raw positive rigidity, the two parallel connection control the intrinsic frequency of cold bending thin wall steel plate wall near zero stiffness, and wall self-vibration is effectively reduced
Frequency, to effectively reduce influence of the extraneous vibration to wall.
5. the cold bending thin wall steel plate wall of one kind built-in friction and negative stiffness combined vibration-damping device according to claim 1
System, it is characterised in that: the width of groove profile metal plate (4) is 1.5~2.5 times that metal supports square bar (1) width；Can (6)
Width be cold bending thin wall steel plate wall thickness 1/4~3/4, top circular hole diameter be metal support square bar width 1.5
~2 times.
6. the cold bending thin wall steel plate wall of one kind built-in friction and negative stiffness combined vibration-damping device according to claim 1
System, it is characterised in that: in tension spring group (11) outer cover metal sleeve (12) different there are two diameter, metal sleeve can be with drawing
Spring group elongates or shortens together, to ensure that axial deformation only occurs for tension spring group.
7. the cold bending thin wall steel plate wall of one kind built-in friction and negative stiffness combined vibration-damping device according to claim 1
System, it is characterised in that: column (14) You Lianggen channel steel forms, and there are a fixed gap among two channel steels, gap length is metal
1.0~1.5 times of the width of square bar are supported, so that combined vibration-damping device and wall reasonably form an integral framework, the two
It can construct simultaneously, and the arrangement of combined vibration-damping device does not influence the normal function of wall.
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| CN201910092656.3A CN109826338B (en) | 2019-01-30 | 2019-01-30 | Cold-formed thin-wall steel plate wall system with built-in friction and negative stiffness composite vibration damper |
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|---|---|---|---|
| CN201910092656.3A CN109826338B (en) | 2019-01-30 | 2019-01-30 | Cold-formed thin-wall steel plate wall system with built-in friction and negative stiffness composite vibration damper |
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Cited By (5)
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| CN111119366A (en) * | 2020-01-20 | 2020-05-08 | 广州大学 | Shape memory alloy negative stiffness damping device |
| CN112922427A (en) * | 2021-01-30 | 2021-06-08 | 郑勇 | Assembled wall body that contains circular trajectory |
| CN115012554A (en) * | 2022-06-23 | 2022-09-06 | 江苏科技大学 | Novel multi-layer cold-bending thin-wall type steel structure system and assembling method |
| CN115182474A (en) * | 2022-06-16 | 2022-10-14 | 桂林理工大学 | Energy consumption bracing system based on bistable rod piece system |
| CN117926945A (en) * | 2024-02-01 | 2024-04-26 | 重庆大学 | Cold-formed thin-wall section steel wall body with post-earthquake self-resetting function |
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| CN111119366B (en) * | 2020-01-20 | 2024-05-31 | 广州大学 | Shape memory alloy negative rigidity damping device |
| CN112922427A (en) * | 2021-01-30 | 2021-06-08 | 郑勇 | Assembled wall body that contains circular trajectory |
| CN115182474A (en) * | 2022-06-16 | 2022-10-14 | 桂林理工大学 | Energy consumption bracing system based on bistable rod piece system |
| CN115182474B (en) * | 2022-06-16 | 2024-04-02 | 桂林理工大学 | Energy-consumption diagonal bracing system based on bistable rod piece system |
| CN115012554A (en) * | 2022-06-23 | 2022-09-06 | 江苏科技大学 | Novel multi-layer cold-bending thin-wall type steel structure system and assembling method |
| CN115012554B (en) * | 2022-06-23 | 2023-08-22 | 江苏科技大学 | Multilayer cold-formed thin-wall steel structure system and assembly method |
| CN117926945A (en) * | 2024-02-01 | 2024-04-26 | 重庆大学 | Cold-formed thin-wall section steel wall body with post-earthquake self-resetting function |
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| CN109826338B (en) | 2020-06-19 |
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