CN104929263A - Assembled lead-foamed aluminum composite damper for building vibration reduction - Google Patents
Assembled lead-foamed aluminum composite damper for building vibration reduction Download PDFInfo
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- CN104929263A CN104929263A CN201510257460.7A CN201510257460A CN104929263A CN 104929263 A CN104929263 A CN 104929263A CN 201510257460 A CN201510257460 A CN 201510257460A CN 104929263 A CN104929263 A CN 104929263A
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Abstract
The invention provides an assembled lead-foamed aluminum composite damper for building vibration reduction. The damper is a novel composite type energy-dissipating and vibration-reducing device formed by connecting three blocks of foamed aluminum composites together through lead-core bars. The assembled lead-foamed aluminum composite damper for building vibration reduction has the advantages that the damper takes full advantages of three-dimensionally-communicated high damping characteristics of the foamed aluminum composites and initial shearing stiffness and ductility of lead cores; the foamed aluminum composites are formed by filling holes in foamed aluminum with viscous-elastic materials, and as long as the composites vibrate structurally, mutual displacement between interfaces of the viscous-elastic materials and the foamed aluminum in the damper is prone to occurring, so that high-damping frictional energy-dissipating effects are achieved; since the initial shearing stiffness of the lead cores is higher than that of the foamed aluminum composites, during small-amplitude vibration, only the foamed aluminum composites reciprocate to dissipate energy; during large-amplitude vibration, the lead and the foamed aluminum composites move jointly to dissipate energy together, so that high-damping energy-dissipating effects are achieved.
Description
Technical field
The present invention is a kind of vibration damper of engineering structures, can be used for energy-dissipating and shock-absorbing (shaking) and the vibration isolation of house and bridge construction.
Background technology
Energy-eliminating shock-absorbing technology is a kind of effective structure control technique, and it, by installing energy-eliminating shock-absorbing device in the appropriate location of structure, utilizes the power consumption of these devices to reduce the dynamic response of structure under earthquake, strong wind or other dynamic load function.
The vibration damping control technology of house and bridge is done Passive Control, i.e. additional passive type damper.Lead is that a kind of density is large, fusing point, plasticity are high, intensity is low, modulus of elasticity is little, resistivity is high, corrosion resistant ductile metal, there is lower surrender shear strength and sufficiently high initial shear strength, at a certain temperature, can in crystallization after distortion, lead for retractable pencil has been applied in energy-dissipating and shock-absorbing field widely for this reason.Foamed aluminium composite material is the high damping material of filling viscoelastic material in the foamed aluminium structure by being communicated with to three-dimensional open pores and making.This material is a kind of aluminium and viscoelastic material intertexture composite material, under the cyclic force effect of alternately change, aluminium and viscoelastic material due to modulus of elasticity difference larger, easily between both interfaces, there is the mutual changing of the relative positions, cause and produce huge friction energy-dissipating effect, and foamed aluminium and viscoelastic material inherently possess good damper mechanism.Therefore, if be combined with foamed aluminium composite material by lead, new means and approach will inevitably be provided for engineering structures vibration isolation.
Summary of the invention
Technical problem: the invention provides a kind of building vibration damping assembled lead-foamed aluminium composite material damper, this damper structure is simple, easy to make, the lead-foamed aluminium composite material damper of stable performance, can be applied to the vibration damping control field of house and bridge.
Technical scheme: one building vibration damping assembled lead-foamed aluminium composite material damper that the present invention proposes, this damper comprises upper connecting rod, dismountable outer sleeve, outside foamed aluminium composite material, inner foam aluminium composite material, lead for retractable pencil rod, extends steel plate, lower connecting bolt and lower connecting rod; Wherein foamed aluminium composite material comprises two pieces of outside foamed aluminium composite materials and one piece of inner foam aluminium composite material, two pieces of outside its thickness of foamed aluminium composite material are identical, lay respectively at the both sides of inner foam aluminium composite material, the thickness of inner foam aluminium composite material is the twice of outside foamed aluminium composite material; Inner foam aluminium composite material is positioned at dismountable outer sleeve, and the top of dismountable outer sleeve connects upper connecting rod; Outside foamed aluminium composite material is positioned at dismountable outer sleeve of both sides, and the bottom of dismountable outer sleeve of both sides connects extension steel plate, extends steel plate and is connected with lower connecting rod by lower connecting bolt; Lead for retractable pencil rod is horizontally through outside foamed aluminium composite material and inner foam aluminium composite material; There is certain gap in the lower end of inner foam aluminium composite material and the upper end of lower connecting rod, inner foam aluminium composite material is moved around up and down.
Outside foamed aluminium composite material, inner foam aluminium composite material are equipped with circular hole, and lead for retractable pencil rod two ends are provided with screw thread, and lead for retractable pencil rod is passed described circular hole and lead and foamed aluminium composite material linked together by bolt.
Outer sleeve is detachable, is fixed in sleeve by bolt by foamed aluminium composite material, and the connecting rod be connected with outer sleeve is then with welding with extending steel plate.
Lead for retractable pencil rod is major diameter, diameter dimension should be the half of foamed aluminium composite material bond length, possesses the initial shear rigidity of about 130Mpa, make its damper when small amplitude motion, foamed aluminium composite material is only had to deform power consumption, and foamed aluminium composite material works together with lead for retractable pencil when large amplitude, provide damping force more effectively.
Beneficial effect: be fixed together by foamed aluminium composite material with a kind of dismountable outer sleeve, solves the problem that foamed aluminium composite material not easily connects.Have higher initial shear strength based on lead for retractable pencil, therefore lead for retractable pencil is designed to major diameter, make damper when small amplitude motion, lead for retractable pencil rod can produce extruding mutually to the foamed aluminium composite material around it, makes foamed aluminium composite material inside produce friction energy-dissipating; And when Large travel range changes, lead for retractable pencil rod and foamed aluminium composite material are cooperatively consumed energy, shake (shake) dynamic control problem of house and bridge etc. can be applied to.
Accompanying drawing explanation
Fig. 1 is the structure chart of this damper,
Fig. 2 is the plan view of this damper,
Fig. 3 is the schematic three dimensional views of this damper.
Have in figure: upper connecting rod 1, dismountable outer sleeve 2, outside foamed aluminium composite material 3, inner foam aluminium composite material 4, lead for retractable pencil rod 5, extension steel plate 6, lower connecting bolt 7, lower connecting rod 8.
Detailed description of the invention
Below by the present invention is further described in conjunction with the accompanying drawings and embodiments.
Lead of the present invention-foamed aluminium composite material damper is made up of upper connecting rod 1, dismountable outer sleeve 2, outside foamed aluminium composite material 3, inner foam aluminium composite material 4, lead for retractable pencil rod 5, extension steel plate 6, lower connecting bolt 7 and lower connecting rod 8.First the inner foam aluminium composite material 4 of mid portion is loaded inside dismountable outer sleeve 2, be fixed by bolt locked, and the outside foamed aluminium composite material 3 of left-right parts is with reference to the method for intermediate portion, loaded in outer sleeve; Afterwards three pieces of foamed aluminium composite materials are superimposed together, penetrate lead for retractable pencil rod by centre, and be fixed with connecting bolt.Utilize dismountable outer sleeve, the problem that foamed aluminium composite material not easily connects can be solved.Because the initial shear rigidity of lead is higher, when little amplitude motion, lead for retractable pencil rod can produce extruding mutually to the foamed aluminium composite material around it, and enables lead for retractable pencil rod and foamed aluminium composite material cooperatively consume energy during large amplitude.
The course of work of the present invention: for house vibration damping, lead-foamed aluminium composite material damper is connected on bean column node with the form of bearing diagonal, and upper lower connecting plate is fixed with bolt respectively, makes foamed aluminium composite material damper be placed in the center of bearing diagonal.When high wind or small geological process, lead-foamed aluminium composite material can rise and effectively prevent house from rocking; And when severe earthquake action, plumbous and foamed aluminium composite material acting in conjunction, plays good damping energy dissipation effect, thus effectively carries out vibration damping (shake) to house.
Claims (4)
1. build vibration damping assembled lead-foamed aluminium composite material damper, it is characterized in that this damper comprises upper connecting rod (1), dismountable outer sleeve (2), outside foamed aluminium composite material (3), inner foam aluminium composite material (4), lead for retractable pencil rod (5), extends steel plate (6), lower connecting bolt (7) and lower connecting rod (8); Wherein foamed aluminium composite material comprises two pieces of outsides foamed aluminium composite material (3) and one piece of inner foam aluminium composite material (4), two pieces of outside foamed aluminium composite material (3) its thickness are identical, lay respectively at the both sides of inner foam aluminium composite material (4), the thickness of inner foam aluminium composite material (4) is the twice of outside foamed aluminium composite material (3); Inner foam aluminium composite material (4) is positioned at dismountable outer sleeve (2), and the top of dismountable outer sleeve (2) connects upper connecting rod (1); Outside foamed aluminium composite material (3) is positioned at dismountable outer sleeve (2) of both sides, and the bottom of dismountable outer sleeve (2) of both sides connects and extends steel plate (6), extends steel plate (6) and is connected with lower connecting rod (8) by lower connecting bolt (7); Lead for retractable pencil rod (5) is horizontally through outside foamed aluminium composite material (3) and inner foam aluminium composite material (4); There is certain gap in the lower end of inner foam aluminium composite material (4) and the upper end of lower connecting rod (8), inner foam aluminium composite material (4) can be moved around up and down.
2. building vibration damping assembled lead-foamed aluminium composite material damper according to claim 1, outside it is characterized in that, foamed aluminium composite material (3), inner foam aluminium composite material (4) are equipped with circular hole, and lead for retractable pencil rod (5) two ends are provided with screw thread, lead for retractable pencil rod (5) is through described circular hole and lead and foamed aluminium composite material are linked together by bolt.
3. building vibration damping assembled lead-foamed aluminium composite material damper according to claim 1, it is characterized in that outer sleeve (2) is for detachable, by bolt, foamed aluminium composite material is fixed in sleeve, the connecting rod (1) be connected with outer sleeve and to extend steel plate (6) be then with welding.
4. building vibration damping assembled lead-foamed aluminium composite material damper according to claim 1, it is characterized in that, lead for retractable pencil rod (5) is major diameter, diameter dimension should be the half of foamed aluminium composite material bond length, possess the initial shear rigidity of about 130Mpa, make its damper when small amplitude motion, only have foamed aluminium composite material to deform power consumption, and foamed aluminium composite material works together with lead for retractable pencil when large amplitude, provide damping force more effectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510257460.7A CN104929263B (en) | 2015-06-23 | 2015-06-23 | A kind of building vibration damping assembled lead foamed aluminium composite material antivibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510257460.7A CN104929263B (en) | 2015-06-23 | 2015-06-23 | A kind of building vibration damping assembled lead foamed aluminium composite material antivibrator |
Publications (2)
| Publication Number | Publication Date |
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| CN104929263A true CN104929263A (en) | 2015-09-23 |
| CN104929263B CN104929263B (en) | 2017-03-15 |
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| CN201510257460.7A Active CN104929263B (en) | 2015-06-23 | 2015-06-23 | A kind of building vibration damping assembled lead foamed aluminium composite material antivibrator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256912A (en) * | 2015-10-08 | 2016-01-20 | 东南大学 | Assembled foamed aluminum composite material vibration reduction and energy consumption support |
| CN105350677A (en) * | 2015-11-11 | 2016-02-24 | 东南大学 | Combined damper made by foamed aluminum combined material having compressibility |
| CN107338735A (en) * | 2017-06-08 | 2017-11-10 | 东南大学 | The damaged replaceable energy-dissipating device of chain type |
| CN108086772A (en) * | 2018-02-01 | 2018-05-29 | 山东大学 | Re-centring damper based on buckling-restrained shape memory alloy bar |
| CN108517979A (en) * | 2018-02-26 | 2018-09-11 | 北京建筑大学 | A kind of damping device and its installation method |
| CN111962701A (en) * | 2020-08-14 | 2020-11-20 | 中交鹭建有限公司 | Self-resetting lead friction-viscoelasticity composite damper and working method thereof |
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| CN1264798A (en) * | 2000-03-10 | 2000-08-30 | 东南大学 | Viscoelastic damper of lead pin for engineering structure |
| JP2002340129A (en) * | 2001-05-18 | 2002-11-27 | Nsk Ltd | Ball screw device |
| CN1995575A (en) * | 2002-02-21 | 2007-07-11 | 奥依列斯工业株式会社 | Damper and vibration controlling structure using the same |
| CN101896674A (en) * | 2007-12-13 | 2010-11-24 | 翁令司工业股份有限公司 | Wall type friction damper |
| CN201901959U (en) * | 2010-12-10 | 2011-07-20 | 陈云 | Novel tensile and compressive energy consumption damper |
| CN201973156U (en) * | 2011-04-01 | 2011-09-14 | 许姜德 | Damper with metal shell |
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2015
- 2015-06-23 CN CN201510257460.7A patent/CN104929263B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1264798A (en) * | 2000-03-10 | 2000-08-30 | 东南大学 | Viscoelastic damper of lead pin for engineering structure |
| JP2002340129A (en) * | 2001-05-18 | 2002-11-27 | Nsk Ltd | Ball screw device |
| CN1995575A (en) * | 2002-02-21 | 2007-07-11 | 奥依列斯工业株式会社 | Damper and vibration controlling structure using the same |
| CN101896674A (en) * | 2007-12-13 | 2010-11-24 | 翁令司工业股份有限公司 | Wall type friction damper |
| CN201901959U (en) * | 2010-12-10 | 2011-07-20 | 陈云 | Novel tensile and compressive energy consumption damper |
| CN201973156U (en) * | 2011-04-01 | 2011-09-14 | 许姜德 | Damper with metal shell |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256912A (en) * | 2015-10-08 | 2016-01-20 | 东南大学 | Assembled foamed aluminum composite material vibration reduction and energy consumption support |
| CN105350677A (en) * | 2015-11-11 | 2016-02-24 | 东南大学 | Combined damper made by foamed aluminum combined material having compressibility |
| CN107338735A (en) * | 2017-06-08 | 2017-11-10 | 东南大学 | The damaged replaceable energy-dissipating device of chain type |
| CN107338735B (en) * | 2017-06-08 | 2019-09-10 | 东南大学 | The damaged replaceable energy-consuming device of chain type |
| CN108086772A (en) * | 2018-02-01 | 2018-05-29 | 山东大学 | Re-centring damper based on buckling-restrained shape memory alloy bar |
| CN108517979A (en) * | 2018-02-26 | 2018-09-11 | 北京建筑大学 | A kind of damping device and its installation method |
| CN111962701A (en) * | 2020-08-14 | 2020-11-20 | 中交鹭建有限公司 | Self-resetting lead friction-viscoelasticity composite damper and working method thereof |
| CN111962701B (en) * | 2020-08-14 | 2021-09-21 | 中交鹭建有限公司 | Self-resetting lead friction-viscoelasticity composite damper and working method thereof |
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| Publication number | Publication date |
|---|---|
| CN104929263B (en) | 2017-03-15 |
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Address after: 210093 Nanjing University Science Park, 22 Hankou Road, Gulou District, Nanjing City, Jiangsu Province Patentee after: Southeast University Address before: 210033 Xigang office, Qixia District, Nanjing, Jiangsu, No. 8, Qi Min Dong Road, Xingshan City, Patentee before: Southeast University |
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