CN103696508B - Float and build vibration insulation structure - Google Patents
Float and build vibration insulation structure Download PDFInfo
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- CN103696508B CN103696508B CN201410001777.XA CN201410001777A CN103696508B CN 103696508 B CN103696508 B CN 103696508B CN 201410001777 A CN201410001777 A CN 201410001777A CN 103696508 B CN103696508 B CN 103696508B
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Abstract
Open a kind of the floating of the present invention builds vibration insulation structure, successive arranges vibration isolator, channel-section steel, steel plate, steel mesh reinforcement, concrete from lower to upper, sound absorption material is arranged on the cavity on steel plate and building structure ground, and elastic vibration isolation pad is arranged between building structure facade and steel plate, concrete.Channel-section steel bottom portion of groove arranges installing hole, under vibration isolator is arranged on channel-section steel by top bolt; Steel plate is arranged on channel-section steel, uses electric welding reliably to weld between channel-section steel steel plate; Welded wire fabric above steel plate, concreting.Described vibration isolator damping is spring vibration-isolator; Vibration isolator arrayed, its spacing and load are built the total load that vibration insulation structure bears determine according to floating.Possess vibration isolating effect good, float and build vibration insulation structure good integrity, the feature that compressive strength is high.
Description
Technical field
The present invention relates to a kind of building noise control technique, especially can solve transaudient floating of the vibration of floor of power-equipment and build vibration insulation structure.
Background technology
Have various equipment in modern architecture as blower fan, freezing unit, water pump, elevator etc., they produce vibration when running and speed change, the vibration noise sent can be entered in building structure by floor with the form of elastic wave.As floor and building structure do not have effective vibration isolation, then this connection therefore constitution equipment vibration noise major transmission path.At building structure floor upper berth elastic device, as elastomeric material separation layer, then at placing of concrete surface layer above.Steel concrete surface layer is mass, the similar isolation spring of elastomeric isolation layer, forms a vibrating isolation system.Floor floats building structure all to be had good effect to the active vibration isolation noise reduction of power-equipment, instrument and meter and passive insulation and is widelyd popularize.
Floating build vibration insulation structure and have three leading indicators, 1, good vibration isolation efficiency, meet using function; 2, sound construction is reliable, good endurance, long service life; 3, reduce floating vibration insulation structure of building as possible to conduct oneself with dignity, reduce the additional duty to building structure floor.
But, the floating of current setting builds vibration insulation structure, often using resilient rubbber cushion as elastomeric material separation layer, rubber damper is solid rubber block, and rubber has interior friction, and critical damping is larger, therefore seldom there is the such strong resonance of steel spring, can absorbing vibrational energy, the oscillating machinery being provided with rubber damper, by also can the use of safety during resonance region, can not produce excessive vibration.The modulus of elasticity of rubber damper is very little, is a kind of nonlinear elastomeric material.Intrinsic frequency 0=13Hz, if equipment motor speed is 1450min/s, the forcing frequency=24.17Hz of electric system.The design cut-off frequency 0=13Hz of floating building structure rubber damper ,/0=1.86.And in actual Vibration Absorbing System Design, general choosing/0=2.5-5, if can not meet this requirement, must reduce system frequency, realize by reducing the elastic coefficient and increasing vibration insulating foundation.Cushion blocking damping efficiency is difficult to the requirement that satisfied effective abatement apparatus structural vibration noise is propagated.
Current setting floating builds the concrete pavement that vibration insulation structure is laid, and in order to prevent rupturing during bearing load, and improves its crushing resistance and overall stressed.Often the steel concrete surface layer of pouring is arranged and reach more than 150mm, thereby produce and very large additional duty is defined to building structure floor, have impact on building structure service life.
Summary of the invention
In order to the vibration isolating effect solving existing floating building structure is undesirable, the overweight dead load causing floor to increase of floating building structure deadweight exceeds the deficiency of design of building structures load, the invention provides a kind of floating and build vibration insulation structure, this is floating builds vibration insulation structure and not only has excellent vibration isolating effect, simultaneously, from heavy and light, its crushing resistance and holistic resistant behavior excellence.
The technical solution adopted for the present invention to solve the technical problems is: a kind of floating builds vibration insulation structure, successive arranges vibration isolator, channel-section steel, steel plate, steel mesh reinforcement, concrete from lower to upper, sound absorption material is arranged on the cavity on steel plate and building structure ground, and elastic vibration isolation pad is arranged between building structure facade and steel plate, concrete.Channel-section steel bottom portion of groove arranges installing hole, under vibration isolator is arranged on channel-section steel by top bolt; Steel plate is arranged on channel-section steel, uses electric welding reliably to weld between channel-section steel with steel plate; Welded wire fabric above steel plate, concreting.Channel-section steel is made up of the channel-section steel of longitudinal arrangement and transversely arranged channel-section steel respectively, and upwards, vibration isolator is arranged on bottom portion of groove to the channel-section steel recess of longitudinal arrangement; Transversely arranged channel-section steel is arranged in the interface between steel plate, and recess is downward, and steel plate is connected with transversely arranged channel-section steel bottom portion of groove full weld; Transversely arranged channel-section steel and the channel steel shape of longitudinal arrangement integrally force structure.With between steel plate full weld be connected, define its crushing resistance and overall well stressed.
Described vibration isolator is damping spring vibration isolator; Vibration isolator arrayed, its spacing and load are built the total load that vibration insulation structure bears determine according to floating.Damping spring vibration isolator has the low frequency of steel spring shock absorber and the large two-fold advantage of damping.This serial shock absorber load scope is wide, the intrinsic frequency 0≤4.9Hz tackled under all kinds of load ,/0=4.93, its vibration transfer ratio T=0.04, damping ratio 0.065.Have intrinsic frequency low, vibration isolating effect is good, and compact conformation is easy for installation, long working life, strong to working environment adaptability.Obvious effect is all had to the isolation of active vibration isolation, passive insulation, impact shock and solid-borne sound transmission.Vibration isolator arrayed, also makes mechanical floor load of floor more balanced thus.The setting of vibration isolator is exactly form vibrating isolation system in some sense, reduces natural frequency f
0, reduce the rigidity of vibrating isolation system, to reach the transmission reducing vibration.The vibrating isolation system compress variation that the load of vibrating isolation system carrying produces is larger, natural frequency f
0lower, frequency than just larger, thus makes transmission than little and vibration isolating effect is good.Vibration isolating effect and corresponding noise reduction ratio, and noise reduction amount NR is obtained by vibration isolation system vibration transfer ratio T.Sound absorption material is set at the cavity on steel plate and building structure ground, the absorption of air borne sound can be increased, reduce the propagation of machine room airborne noise through building structure floor.
The main points arranging floating building structure are, whenever being rigidly connected of former floor and floating building structure should be avoided, namely the so-called detrimental effect preventing " overhead speaker ", because the vibration of solid-borne sound is easy to be delivered to other each layer room along wall, beam, post, basis and floor system side direction, especially being rigidly connected of floating building structure and surroundings wall, by vibrational energy along structure-borne, cause other structure also radiation acoustic energy, the vibration isolation function of floating building structure is destroyed totally." overhead speaker " is often isolated by spillage during secondary pouring reinforcement concrete layer, surface layer and metope and directly to be contacted etc. that reason causes improperly.In order to spillage when preventing pouring reinforcement concrete layer causes " overhead speaker ", be generally at layer overlay tar felt, but tar felt can cause steel plate and layer of concrete delamination, impacts the globality of floating building structure.Groove is answered at described steel plate edge, the gap full weld between steel plate.Weld seam must not have the defects such as crackle, pore, slag inclusion, incomplete fusion.Object is the spillage in order to prevent during pouring reinforcement concrete layer.Elastic vibration isolation pad is arranged between building structure facade and steel plate, concrete, is isolate directly to contact improperly in order to surface layer and metope to cause " overhead speaker ".Long owing to floating the life cycle of building vibration insulation structure, have non-exchange property, the material of use should have good antiseptic property.Rust preventive painting is answered inside described channel-section steel and steel plate.
The invention has the beneficial effects as follows, can Prefabrication, in-site installation, strong adaptability, while short construction period, vibration isolating effect be good, floatingly builds vibration insulation structure good integrity, and compressive strength is high.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the floating vertical section constructional drawing building vibration insulation structure embodiment.
Fig. 2 be Fig. 1 overlook constructional drawing.
Fig. 3 is the local structure figure of Fig. 1.
1. vibration isolators, 2. steel plate, 3. steel mesh reinforcement, 4. concrete, 5. sound absorption material, 6. ground in figure, 7. elastic vibration isolation pad, 8. facade, 9. bottom portion of groove, 10. installing hole, 11. bolts, the channel-section steel of 12. longitudinal arrangements, 13. transversely arranged channel-section steels, 14. edges.
Detailed description of the invention
In the embodiment shown in Fig. 1,2,3, a kind of floating builds vibration insulation structure, successive arranges vibration isolator (1), channel-section steel, steel plate (2), steel mesh reinforcement (3), concrete (4) from lower to upper, sound absorption material (5) is arranged on the cavity on steel plate (2) and building structure ground (6), and elastic vibration isolation pad (7) is arranged between building structure facade (8) and steel plate (2), concrete (4).Channel-section steel bottom portion of groove (9) arranges installing hole (10), under vibration isolator (1) is arranged on channel-section steel by top bolt (11); Steel plate (2) is arranged on channel-section steel, uses electric welding reliably to weld between channel-section steel with steel plate (2); Steel plate (2) is welded wire fabric (3) above, concreting (4).
Described vibration isolator (1) is damping spring vibration isolator; Vibration isolator (1) arrayed, its spacing and load are built the total load that vibration insulation structure bears determine according to floating.Described channel-section steel is made up of the channel-section steel (12) of longitudinal arrangement and transversely arranged channel-section steel (13) respectively, and upwards, vibration isolator (1) is arranged on bottom portion of groove (9) to channel-section steel (12) recess of longitudinal arrangement; Transversely arranged channel-section steel (13) is arranged in the interface between steel plate (2), and recess is downward, and steel plate (2) is connected with transversely arranged channel-section steel (13) bottom portion of groove (9) full weld; Between the channel-section steel (12) of longitudinal arrangement and transversely arranged channel-section steel (13), full weld connects.Groove is answered at described steel plate (2) edge (14), the gap full weld between steel plate (2).
Should be appreciated that without departing from the scope of the present invention, multiple combination and change can be made to above-described embodiment.All any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. floating build vibration insulation structure for one kind, successive arranges vibration isolator, channel-section steel, steel plate, steel mesh reinforcement, concrete from lower to upper, sound absorption material is arranged on the cavity on steel plate and building structure ground, elastic vibration isolation pad is arranged between building structure facade and steel plate, concrete, it is characterized in that: channel-section steel bottom portion of groove arranges installing hole, under vibration isolator is arranged on channel-section steel by top bolt; Steel plate is arranged on channel-section steel, uses electric welding reliably to weld between channel-section steel with steel plate; Welded wire fabric above steel plate, concreting; Channel-section steel is made up of the channel-section steel of longitudinal arrangement and transversely arranged channel-section steel respectively, and upwards, vibration isolator is arranged on bottom portion of groove to the channel-section steel recess of longitudinal arrangement; Transversely arranged channel-section steel is arranged in the interface between steel plate, and recess is downward, and steel plate is connected with transversely arranged channel-section steel bottom portion of groove full weld; Between the channel-section steel of longitudinal arrangement and transversely arranged channel-section steel, full weld connects.
2. according to claim 1 floating builds vibration insulation structure, it is characterized in that: described vibration isolator is damping spring vibration isolator; Vibration isolator arrayed, its spacing and load are built the total load that vibration insulation structure bears determine according to floating.
3. according to claim 1 floating builds vibration insulation structure, and it is characterized in that: groove is answered at described steel plate edge, the gap full weld between steel plate, weld seam must not have crackle, pore, slag inclusion, incomplete fusion defect.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410001777.XA CN103696508B (en) | 2014-01-03 | 2014-01-03 | Float and build vibration insulation structure |
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| CN201410001777.XA CN103696508B (en) | 2014-01-03 | 2014-01-03 | Float and build vibration insulation structure |
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| CN103696508B true CN103696508B (en) | 2016-03-09 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105712166A (en) * | 2014-12-03 | 2016-06-29 | 林洁 | Vibration isolation system for elevator machine room |
| CN105155750B (en) * | 2015-09-25 | 2017-10-17 | 范峰杰 | A kind of antidetonation sound insulation superstructure for building |
| CN109795945B (en) * | 2018-12-24 | 2020-09-01 | 中国电建集团山东电力建设第一工程有限公司 | Combined hoisting method for spring vibration isolator and steel structure platform |
| CN110005111A (en) * | 2019-04-17 | 2019-07-12 | 上海建工七建集团有限公司 | A kind of roofing cooling tower vibration and noise reducing pedestal and its construction method |
| CN110453884A (en) * | 2019-08-05 | 2019-11-15 | 江苏省华建建设股份有限公司 | Complete float builds vibration damping soundproof floor and its construction method |
| CN113006412B (en) * | 2021-01-29 | 2022-07-12 | 桐欣盛建设集团有限公司 | Construction method of sound insulation floor slab |
| CN112922022A (en) * | 2021-02-01 | 2021-06-08 | 中建八局第三建设有限公司 | Construction method capable of maintaining assembled floating building equipment foundation |
| CN114294373B (en) * | 2021-12-08 | 2024-05-28 | 中车青岛四方机车车辆股份有限公司 | Vibration isolator and rail vehicle |
| CN114407947B (en) * | 2022-01-19 | 2023-06-23 | 中车青岛四方机车车辆股份有限公司 | Rail vehicle floor and rail vehicle |
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| CN203640082U (en) * | 2014-01-03 | 2014-06-11 | 厦门嘉达声学技术有限公司 | Floating vibration isolating structure |
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| JP4097894B2 (en) * | 2000-12-28 | 2008-06-11 | 早川ゴム株式会社 | Soundproof floor structure, soundproof flooring, and construction method of soundproof floor structure |
| JP2002317521A (en) * | 2001-04-19 | 2002-10-31 | Iida Kenchiku Sekkei Jimusho:Kk | Floor supporting structure of building |
| JP3866218B2 (en) * | 2003-05-08 | 2007-01-10 | 積水ハウス株式会社 | Anti-vibration structure of building |
| CN1297712C (en) * | 2004-07-23 | 2007-01-31 | 尹学军 | Floating road bed |
| CN201531034U (en) * | 2009-04-22 | 2010-07-21 | 浙江省东阳第三建筑工程有限公司 | Vibration isolation and noise reduction equipment foundation of steel frame floating construction |
| CN201850740U (en) * | 2010-11-22 | 2011-06-01 | 北京浩瑞诚业新型建材有限公司 | Vibration-damping sound-insulation cushion of floating floor slab and floating floor slab |
| CN202055357U (en) * | 2011-01-28 | 2011-11-30 | 广州和升隔音技术有限公司 | Combined type soundproof room |
| CN202324234U (en) * | 2011-03-07 | 2012-07-11 | 北京中亚康源环保工程有限公司 | Sound-insulated vibration-isolated floating structure |
| CN102220789B (en) * | 2011-04-14 | 2012-09-05 | 上海昭瑞减震科技有限公司 | Suspension type floating plate vibration isolation system |
| CN202672647U (en) * | 2012-06-13 | 2013-01-16 | 江苏建筑职业技术学院 | Energy-saving sound-insulating structure of family splitting floor of house |
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| CN203640082U (en) * | 2014-01-03 | 2014-06-11 | 厦门嘉达声学技术有限公司 | Floating vibration isolating structure |
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