CN111927183A - Building vibration isolation support - Google Patents
Building vibration isolation support Download PDFInfo
- Publication number
- CN111927183A CN111927183A CN202010845773.5A CN202010845773A CN111927183A CN 111927183 A CN111927183 A CN 111927183A CN 202010845773 A CN202010845773 A CN 202010845773A CN 111927183 A CN111927183 A CN 111927183A
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- CN
- China
- Prior art keywords
- vibration isolation
- support
- damper
- cavity
- lattice structure
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000002955 isolation Methods 0.000 title claims abstract description 54
- 238000013016 damping Methods 0.000 claims abstract description 26
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 13
- 239000012530 fluid Substances 0.000 claims abstract description 11
- 230000005284 excitation Effects 0.000 claims abstract description 9
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 229920002050 silicone resin Polymers 0.000 claims description 4
- 238000005495 investment casting Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 6
- 238000009413 insulation Methods 0.000 description 6
- 230000035939 shock Effects 0.000 description 6
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910001000 nickel titanium Inorganic materials 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a building vibration isolation support which comprises an upper support, a lower support, a vibration isolation ring, a power-on device and a damper, wherein the vibration isolation ring is supported between the upper support and the lower support; the vibration isolation circular ring is made of an intelligent lattice structure; the intelligent lattice structure is made of shape memory alloy and comprises a plurality of lattice unit cells which are repeatedly arranged in space; the damper comprises a damper body, magnetorheological damping fluid filled in the damper body and an excitation coil wound on the damper body; the vibration isolation support can adjust the rigidity and the damping strength of the vibration isolation support according to the size of vibration excitation.
Description
Technical Field
The invention relates to the field of constructional engineering. In particular to an active type vibration isolation support for buildings.
Background
The building vibration isolation technology is used for reducing the transmission of horizontal seismic energy to an upper structure by prolonging the period of a building structure and giving larger damping to the structure, so that the acceleration response of the upper structure is reduced. Meanwhile, the larger displacement generated by the structure is borne by the shock insulation layer, so that the safety of the upper structure is greatly improved. In the prior art, a common rubber shock insulation support and a lead core rubber shock insulation support are mainly adopted, and the type of the shock insulation support which is mainstream in a shock insulation structure is formed due to good shock insulation performance and good durability. However, the stiffness and natural frequency of the ordinary rubber seismic isolation bearing and the lead rubber seismic isolation bearing are constant; the rigidity and frequency of the vibration isolation support cannot be adjusted according to the vibration excitation, so that the vibration isolation effect is poor.
Disclosure of Invention
The invention relates to a building vibration isolation support which comprises an upper support, a lower support, a vibration isolation ring supported between the upper support and the lower support, an electrifying device for electrifying and heating the vibration isolation ring, and a damper connected between the upper support and the lower support;
the vibration isolation circular ring is made of an intelligent lattice structure; the intelligent lattice structure is made of shape memory alloy and comprises a plurality of lattice unit cells which are repeatedly arranged in space;
the damper comprises a damper body, magnetorheological damping fluid filled in the damper body and an excitation coil wound on the damper body;
further, the lattice unit cell is of a body-centered cubic structure; the power-on device comprises conducting rings arranged on the upper surface and the lower surface of the vibration isolation circular ring and a controllable power supply used for supplying power to the conducting rings.
Furthermore, a plurality of stacked disc springs are arranged between the upper support and the lower support.
Further, the smart lattice structure is made of liquid shape memory alloy by investment casting.
Further, the damper comprises a shell, an inner cylinder coaxially fixed in the shell, a piston body in sliding fit in the inner cylinder and a piston rod fixed on the piston body; the piston body divides the inner cavity of the inner cylinder into an upper cavity and a lower cavity, and is provided with a damping hole I for communicating the upper cavity with the lower cavity; a liquid storage cavity is formed between the shell and the inner cylinder; and a damping hole II communicating the lower cavity with the liquid storage cavity is formed in the bottom of the inner cylinder.
Further, the surface of the intelligent lattice structure is coated with a silicone resin coating; and the surfaces of the upper support, the lower support and the disc spring, which are in contact with the intelligent lattice structure, are coated with insulating coatings.
Further, the vibration isolation control system is further included; the vibration isolation control system comprises a displacement sensor and a controller which are arranged on the lower support; the controller is used for receiving signals from the displacement sensor and controlling the energizing current of the vibration isolation circular ring and the exciting coil.
The invention has the beneficial effects that: the vibration isolation element in the vibration isolation support is made of intelligent pointing materials, and when the vibration isolation element is externally connected with a direct current electric excitation lattice structure, the shape memory alloy generates a restoring stress, so that the structural rigidity is improved; after the phase change of the shape memory alloy is finished, the maximum rigidity is achieved; when the temperature is reduced, the recovery stress of the shape memory alloy is reduced, the lattice structure returns to the initial form, and the structural rigidity returns to the initial state; on the other hand, the damping intensity of the damper in the vibration isolation support can also be controlled by the size of the electrified current of the exciting coil, so that the vibration isolation effect of the vibration isolation support is improved.
Drawings
The invention is further described below with reference to the figures and examples.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the damper of the present invention;
fig. 3 is a schematic diagram of the smart lattice structure of the present invention.
Detailed Description
As shown in fig. 1 and 2, the vibration isolation mount for a building of the present embodiment includes an upper mount 6, a lower mount 4, a vibration isolation ring 2 supported between the upper mount 6 and the lower mount 4, an energizing device for energizing and heating the vibration isolation ring 2, a damper 3 connected between the upper mount 6 and the lower mount 4, a plurality of stacked disc springs 5 located between the upper mount 6 and the lower mount 4, and a vibration isolation control system;
the upper support 6 and the lower support 4 are provided with connecting holes which are used for being fixedly connected with a ground structure or an upper building structure; the bottom surface of the upper support 6 and the top surface of the lower support 4 are integrally formed with mounting circular grooves matched with the vibration isolation circular ring 2; and a connecting seat fixedly connected with a piston rod 31 of the damper 3 is arranged at the central position of the bottom of the upper support 6. The upper support 6 and the lower support 4 can be made of insulating materials, or insulating coatings are coated on the surfaces which are in contact with the intelligent lattice structure;
the vibration isolation circular ring 2 is made of an intelligent lattice structure; the intelligent lattice structure is made of shape memory alloy materials (such as nickel-titanium memory alloy) and comprises a plurality of lattice unit cells which are repeatedly arranged in space and connected with each other; the lattice unit cell is of a body-centered cubic structure; the lattice structure selects shape memory alloy as parent metal, the electrifying device comprises conducting rings 1 arranged on the upper surface and the lower surface of the vibration isolation circular ring 2 and a controllable power supply for supplying power to the conducting rings 1, the natural frequency and the rigidity of the parent metal can be changed through a current heating mode, and the controllable variable rigidity/frequency effect is achieved.
The intelligent lattice structure is made of liquid shape memory alloy through investment casting molding, and a silicone resin coating is coated on the surface of the intelligent lattice structure, so that the conductive effect is enhanced; the specific manufacturing method of the intelligent lattice structure comprises the following steps: 1. manufacturing an investment pattern of an intelligent dot matrix mechanism by using resin-plastic base materials through 3D printing equipment; 2. putting the fired mold into casting sand for heating, and forming a cavity with a lattice structure in the casting sand after the fired mold is gasified at high temperature; 3. pouring nickel-titanium memory alloy liquid metal in the cavity; and (4) carrying out surface silicone resin coating treatment on the formed lattice structure after cooling.
As shown in fig. 2, the damper 3 includes a damper body, a magnetorheological damping fluid filled in the damper body, and an excitation coil 32 wound around the damper body; the damper 3 comprises a shell 39, an inner cylinder 33 coaxially fixed in the shell 39, a piston body 35 in sliding fit in the inner cylinder 33, and a piston rod 31 fixed on the piston body 35; the piston body 35 divides the inner cavity of the inner cylinder 33 into an upper cavity 310 and a lower cavity 37, and the piston body 35 is provided with a damping hole I34 for communicating the upper cavity 310 with the lower cavity 37; a liquid storage cavity 38 is formed between the shell 39 and the inner cylinder 33; the bottom of the inner cylinder 33 is provided with a damping hole II 36 which is communicated with the lower cavity 37 and the liquid storage cavity 38; the damper 3 is used for applying a damping effect on the vibration of the upper support 6 relative to the lower support 4 so as to damp the vibration; when the piston body 35 moves downwards, a part of magnetorheological damping fluid in the lower cavity 37 enters the upper cavity 310 through the damping hole I34, and a part of magnetorheological damping fluid enters the fluid storage cavity 38 through the damping hole II 36; when the piston moves upwards, magnetorheological damping fluid in the upper cavity 310 enters the lower cavity 37 through the damping hole I34, and magnetorheological damping fluid in the fluid storage cavity 38 enters the lower cavity 37 through the damping hole II 36; thereby generating a damping effect; meanwhile, when the exciting coil 32 is energized, a magnetic field is formed in the damper body; the viscosity of the magnetorheological damping fluid is changed under the action of a magnetic field, so that the strength of the damping action of the damper 3 can be adjusted.
The vibration isolation control system comprises a displacement sensor and a controller which are arranged on the lower support 4; the controller is used for receiving signals from the displacement sensor and controlling the energizing current of the vibration isolation ring 2 and the excitation coil 32; the displacement sensor can collect the data. The displacement sensor is used for collecting the vibration intensity from the ground, and the controller controls the energizing current of the vibration isolation circular ring 2 and the excitation coil 32 according to the vibration intensity; therefore, the self-adaptive adjustment of the damping intensity of the damper 3 and the rigidity of the vibration isolation ring 2 is realized.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (7)
1. A building vibration isolation support is characterized in that: the vibration isolation device comprises an upper support, a lower support, a vibration isolation ring supported between the upper support and the lower support, a power-on device used for heating the vibration isolation ring by power-on, and a damper connected between the upper support and the lower support;
the vibration isolation circular ring is made of an intelligent lattice structure; the intelligent lattice structure is made of shape memory alloy and comprises a plurality of lattice unit cells which are repeatedly arranged in space;
the damper comprises a damper body, magnetorheological damping fluid filled in the damper body and an excitation coil wound on the damper body.
2. The building vibration isolation mount of claim 1, wherein: the lattice unit cell is of a body-centered cubic structure; the power-on device comprises conducting rings arranged on the upper surface and the lower surface of the vibration isolation circular ring and a controllable power supply used for supplying power to the conducting rings.
3. The building vibration isolation mount of claim 2, wherein: and a plurality of stacked disc springs are arranged between the upper support and the lower support.
4. The building vibration isolation mount of claim 3, wherein: the intelligent lattice structure is made of liquid shape memory alloy through investment casting molding.
5. The building vibration isolation mount of claim 4, wherein: the damper comprises a shell, an inner cylinder coaxially fixed in the shell, a piston body in sliding fit in the inner cylinder and a piston rod fixed on the piston body; the piston body divides the inner cavity of the inner cylinder into an upper cavity and a lower cavity, and is provided with a damping hole I for communicating the upper cavity with the lower cavity; a liquid storage cavity is formed between the shell and the inner cylinder; and a damping hole II communicating the lower cavity with the liquid storage cavity is formed in the bottom of the inner cylinder.
6. The building vibration isolation mount of claim 5, wherein: the surface of the intelligent lattice structure is coated with a silicone resin coating; and the surfaces of the upper support, the lower support and the disc spring, which are in contact with the intelligent lattice structure, are coated with insulating coatings.
7. The building vibration isolation mount of claim 6, wherein: the vibration isolation control system is also included; the vibration isolation control system comprises a displacement sensor and a controller which are arranged on the lower support; the controller is used for receiving signals from the displacement sensor and controlling the energizing current of the vibration isolation circular ring and the exciting coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010845773.5A CN111927183B (en) | 2020-08-20 | 2020-08-20 | Building vibration isolation support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010845773.5A CN111927183B (en) | 2020-08-20 | 2020-08-20 | Building vibration isolation support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111927183A true CN111927183A (en) | 2020-11-13 |
| CN111927183B CN111927183B (en) | 2021-11-26 |
Family
ID=73304852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010845773.5A Expired - Fee Related CN111927183B (en) | 2020-08-20 | 2020-08-20 | Building vibration isolation support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111927183B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343195A (en) * | 2020-09-22 | 2021-02-09 | 重庆大学 | SMA (shape memory alloy) lattice structure with integrated material and function, vibration isolator and manufacturing method of vibration isolator |
| CN112555327A (en) * | 2020-12-02 | 2021-03-26 | 重庆大学 | Lattice magnetorheological intelligent vibration damping structure, magnetorheological vibration isolator and manufacturing method thereof |
| CN114059445A (en) * | 2021-11-30 | 2022-02-18 | 北京交通大学 | Combined bridge vibration reduction and isolation support |
| CN114562051A (en) * | 2022-03-25 | 2022-05-31 | 魏陈熙 | Networked building vibration isolation support with adjustable damping assembly and system |
| CN115419309A (en) * | 2022-08-31 | 2022-12-02 | 山东百顿减震科技有限公司 | Building vibration isolation method, equipment and medium based on intelligent vibration isolation support |
| CN116311826A (en) * | 2023-03-31 | 2023-06-23 | 四川革震科技有限公司 | Support intelligent monitoring system |
| IT202200017259A1 (en) * | 2022-08-12 | 2024-02-12 | Somma S R L | Seismic isolator device and its monitoring method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11280841A (en) * | 1998-03-27 | 1999-10-15 | Tokimec Inc | Damping actuator |
| CN101565973A (en) * | 2009-04-25 | 2009-10-28 | 大连理工大学 | Magnetorheological-shape memory alloy hollow ball intelligent vibration isolator |
| CN201400941Y (en) * | 2009-04-25 | 2010-02-10 | 大连理工大学 | Magneto-rheological-shape memory alloy hollow ball intelligent vibration isolator |
| CN202969620U (en) * | 2012-10-26 | 2013-06-05 | 上海昭瑞减震科技有限公司 | Self-resetting combined seismic isolation device with high vertical bearing capacity |
| CN205421611U (en) * | 2016-04-08 | 2016-08-03 | 郑州大学 | Magnetic current becomes elastomer damping wall |
| CN106989131A (en) * | 2017-04-10 | 2017-07-28 | 北京航空航天大学 | A kind of SMA point of big stroke of valve sleeve actively adjusts damper |
| CN206438616U (en) * | 2017-01-05 | 2017-08-25 | 杨宝生 | Marmem position limitation protection shock isolating pedestal |
| CN209799054U (en) * | 2019-01-31 | 2019-12-17 | 郑州大学 | A lead extrusion magneto-rheological combined energy dissipation device |
| CN111305631A (en) * | 2020-02-14 | 2020-06-19 | 同济大学 | A three-dimensional vibration isolation device combining inertial capacity and rubber bearing |
-
2020
- 2020-08-20 CN CN202010845773.5A patent/CN111927183B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11280841A (en) * | 1998-03-27 | 1999-10-15 | Tokimec Inc | Damping actuator |
| CN101565973A (en) * | 2009-04-25 | 2009-10-28 | 大连理工大学 | Magnetorheological-shape memory alloy hollow ball intelligent vibration isolator |
| CN201400941Y (en) * | 2009-04-25 | 2010-02-10 | 大连理工大学 | Magneto-rheological-shape memory alloy hollow ball intelligent vibration isolator |
| CN202969620U (en) * | 2012-10-26 | 2013-06-05 | 上海昭瑞减震科技有限公司 | Self-resetting combined seismic isolation device with high vertical bearing capacity |
| CN205421611U (en) * | 2016-04-08 | 2016-08-03 | 郑州大学 | Magnetic current becomes elastomer damping wall |
| CN206438616U (en) * | 2017-01-05 | 2017-08-25 | 杨宝生 | Marmem position limitation protection shock isolating pedestal |
| CN106989131A (en) * | 2017-04-10 | 2017-07-28 | 北京航空航天大学 | A kind of SMA point of big stroke of valve sleeve actively adjusts damper |
| CN209799054U (en) * | 2019-01-31 | 2019-12-17 | 郑州大学 | A lead extrusion magneto-rheological combined energy dissipation device |
| CN111305631A (en) * | 2020-02-14 | 2020-06-19 | 同济大学 | A three-dimensional vibration isolation device combining inertial capacity and rubber bearing |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343195A (en) * | 2020-09-22 | 2021-02-09 | 重庆大学 | SMA (shape memory alloy) lattice structure with integrated material and function, vibration isolator and manufacturing method of vibration isolator |
| CN112555327A (en) * | 2020-12-02 | 2021-03-26 | 重庆大学 | Lattice magnetorheological intelligent vibration damping structure, magnetorheological vibration isolator and manufacturing method thereof |
| CN114059445A (en) * | 2021-11-30 | 2022-02-18 | 北京交通大学 | Combined bridge vibration reduction and isolation support |
| CN114059445B (en) * | 2021-11-30 | 2022-11-01 | 北京交通大学 | A combined bridge vibration isolation bearing |
| CN114562051A (en) * | 2022-03-25 | 2022-05-31 | 魏陈熙 | Networked building vibration isolation support with adjustable damping assembly and system |
| IT202200017259A1 (en) * | 2022-08-12 | 2024-02-12 | Somma S R L | Seismic isolator device and its monitoring method |
| CN115419309A (en) * | 2022-08-31 | 2022-12-02 | 山东百顿减震科技有限公司 | Building vibration isolation method, equipment and medium based on intelligent vibration isolation support |
| CN116311826A (en) * | 2023-03-31 | 2023-06-23 | 四川革震科技有限公司 | Support intelligent monitoring system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111927183B (en) | 2021-11-26 |
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Granted publication date: 20211126 |