CN112813738A - Dynamic vibration damping device, floating plate structure with same and floating plate track system - Google Patents
Dynamic vibration damping device, floating plate structure with same and floating plate track system Download PDFInfo
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- CN112813738A CN112813738A CN202110163719.7A CN202110163719A CN112813738A CN 112813738 A CN112813738 A CN 112813738A CN 202110163719 A CN202110163719 A CN 202110163719A CN 112813738 A CN112813738 A CN 112813738A
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- floating plate
- dynamic vibration
- vibration
- mass block
- damping device
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- 238000007667 floating Methods 0.000 title abstract description 59
- 238000013016 damping Methods 0.000 title abstract description 35
- 230000003014 reinforcing effect Effects 0.000 abstract description 20
- 238000010521 absorption reaction Methods 0.000 abstract description 17
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- 239000002245 particle Substances 0.000 abstract description 15
- 229910000831 Steel Inorganic materials 0.000 description 35
- 239000010959 steel Substances 0.000 description 35
- 239000006096 absorbing agent Substances 0.000 description 13
- 238000009434 installation Methods 0.000 description 6
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- 238000002955 isolation Methods 0.000 description 5
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- 230000004044 response Effects 0.000 description 2
- 235000013547 stew Nutrition 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
- E01B19/003—Means for reducing the development or propagation of noise
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/01—Elastic layers other than rail-pads, e.g. sleeper-shoes, bituconcrete
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/09—Ballastless systems
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/12—Floating rails or sleepers
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
本发明公开了一种动力消振装置及具有其的浮置板结构和浮置板轨道系统，动力消振装置放置在浮置板上，其包括吸振用的质量块和弹性垫板，所述质量块内埋设有钢筋支架，所述钢筋支架包括多根横向钢筋和多根竖向钢筋，所述横向钢筋与所述纵向钢筋固定连接；所述弹性垫板固定连接在所述质量块的底端四周及侧壁四周底部，本发明结构简单，配合浮置板使用，可适当选装颗粒阻尼器，进一步有效减小浮置板的振动效果。
The invention discloses a dynamic vibration damping device, a floating plate structure having the same, and a floating plate track system. The dynamic vibration damping device is placed on the floating plate and includes a mass block for vibration absorption and an elastic backing plate. A reinforcing bar bracket is embedded in the mass block, and the reinforcing bar bracket includes a plurality of transverse bars and a plurality of vertical bars, and the transverse bars and the longitudinal bars are fixedly connected; the elastic backing plate is fixedly connected to the bottom of the mass block. Around the ends and the bottom around the side walls, the present invention has a simple structure and is used in conjunction with the floating plate, and a particle damper can be appropriately selected to further effectively reduce the vibration effect of the floating plate.
Description
Technical Field
The invention relates to the technical field of vibration and noise reduction of a track, in particular to a dynamic vibration absorption device, a floating plate structure with the same and a floating plate track system with the same.
Background
In order to reduce environmental vibration noise caused by subway operation, a large number of damping rails are adopted in urban rails, wherein the best damping effect is a steel spring floating slab rail. However, researches show that the steel spring floating plate rail has obvious vibration damping effect on the vibration in the conventional frequency band above 20Hz, but the vibration damping effect is not ideal for the low-frequency vibration of the subway, and the vibration component amplification phenomenon can even occur in the low-frequency band.
The low-frequency part in the vibration has strong capability of penetrating through the stratum and buildings due to low frequency and relatively long wavelength, thereby bringing adverse effects to physical and mental health, work and daily life of nearby residents, even damaging ancient buildings and influencing the normal operation of precision instruments and high-tech equipment.
The first-order natural frequency of the existing floating slab track structure is usually about 10Hz, and the existing floating slab track structure cannot reduce noise for low-frequency vibration components between 5Hz and 15Hz which are sensitive to buildings, precision instruments and human body grades, but the existing floating slab track structure generates resonance because the frequency band vibration is close to the natural frequency of the track structure, so that the vibration response of the frequency band is enhanced. The steel spring floating plate track belongs to a linear vibration isolation system, and cannot obtain lower initial vibration isolation frequency (high vibration isolation effect) and higher static bearing capacity (system stability) at the same time, so that the floating plate track system inevitably causes the vibration response increase of a wheel track system while obtaining the high vibration isolation effect, namely the floating plate track is replaced by the high vibration isolation effect through sacrificing the stability of the system. Therefore, the problems of high noise, large vibration of a track structure, more operation diseases and the like generally exist in the current special vibration reduction section. In addition, in a vibration test of the floating plate track, the peak value is usually concentrated in a medium frequency range of 40-80 Hz, and the amplitude value of the peak value usually determines the vibration damping effect of the floating plate track.
Therefore, it is an urgent need to solve the problem of the art to provide a dynamic vibration absorber capable of improving the vibration reduction effect of a floating plate rail, and a floating plate structure and a floating plate rail system having the same.
Disclosure of Invention
In view of the above, the present invention provides a dynamic vibration absorber, wherein the dynamic vibration absorber is disposed on a floating slab, and a plurality of floating slabs and the dynamic vibration absorber with the floating slabs form a track system with a vibration absorbing effect.
In order to achieve the purpose, the invention adopts the following technical scheme: the dynamic vibration absorption device is arranged on the floating plate and comprises a mass block and an elastic base plate for vibration absorption, a steel bar support is embedded in the mass block and comprises a plurality of transverse steel bars and a plurality of vertical steel bars, and the transverse steel bars are fixedly connected with the longitudinal steel bars; the elastic base plate is fixedly connected to the periphery of the bottom end of the vibration absorption mass block and the bottom of the periphery of the side wall.
The invention has the beneficial effects that: the dynamic vibration absorption device comprises a mass block and an elastic base plate, wherein the mass block is used for absorbing vibration, a steel bar support is arranged in the mass block, the steel bar support comprises a plurality of transverse steel bars and a plurality of vertical steel bars, and the transverse steel bars are fixedly connected with the longitudinal steel bars; the elastic base plates are fixedly connected to the periphery of the bottom end of the mass block and the periphery of the bottom of the side wall of the mass block, the dynamic vibration absorbing device is placed on the floating plate, the floating plate vibrates when a train runs by utilizing the principle of anti-resonance, and the vibration absorbing device is placed on the floating plate, so that the vibration reaction of the vibration absorbing device is always slower than the first-order vibration frequency on the floating plate, the vibration generated by the vibration absorbing device is counteracted with the vibration generated by the floating plate, the energy output by the floating plate is reduced, the supporting counter force of a vibration isolator in the floating plate is reduced, and the vibration absorbing effect of the floating plate is improved.
Preferably, the middle of the bottom end of the mass block is provided with a mounting groove, a particle damper is embedded in the mounting groove, the particle damper comprises a damping cavity and a plurality of damping particles, and the plurality of damping particles are arranged in the damping cavity.
Preferably, the damping cavity is made of non-conductive materials such as plastics, and the damping particles are steel mass balls coated with insulating materials on the outer surfaces.
Preferably, the top of quality piece is equipped with a plurality of blind holes, be equipped with the threaded sleeve pipe of hoist and mount usefulness in the blind hole, threaded sleeve pipe's material is polyamide 66, dustproof dirt proof boot of usefulness is established to threaded sleeve pipe mouth department lid, prevents that threaded sleeve pipe dust from blockking up, the material of dirt proof boot is polybutene.
Preferably, the material of the mass block is C40 concrete.
Preferably, the elastic pad is made of any one of polyurethane, rubber, and TPEE.
The invention also discloses a floating plate structure which comprises the power vibration absorption device and the floating plate, wherein a placing groove is formed in the middle of the top end of the floating plate, the power vibration absorption device is horizontally and correspondingly placed in the placing groove, vibration isolators are arranged in the floating plate and correspond to two sides of the power vibration absorption device, the bottom ends of the vibration isolators are fixed on a foundation, and a buffering space is reserved between the bottom end of the floating plate body and the foundation.
Preferably, the vibration isolator is any one of a linear steel spring vibration isolator, a nonlinear damping double-stiffness steel spring vibration isolator and a rubber disc spring composite vibration isolator.
The invention also discloses a track system which comprises the floating plates, wherein the floating plates are laid on the track bed, and the power vibration absorption devices are distributed at intervals along the length direction of the track bed, so that the track system has a good vibration absorption effect.
Drawings
FIG. 1 is a schematic view of a main body of an embodiment 1 of a dynamic vibration damping apparatus according to the present invention;
FIG. 2 is a schematic cross-sectional view of a dynamic vibration absorber apparatus of an embodiment 1A-A of the present invention;
FIG. 3 is a schematic view of the installation of the dynamic vibration absorber 1 and a floating plate according to an embodiment of the present invention;
FIG. 4 is a schematic view of a track system of embodiment 1 of a dynamic vibration absorber;
FIG. 5 is a schematic view of the main body of an embodiment 2 of the dynamic vibration damping device of the present invention;
FIG. 6 is a schematic cross-sectional view of an embodiment 2B-B of the dynamic vibration elimination apparatus of the present invention;
FIG. 7 is a schematic view of the installation of the dynamic vibration absorber 2 and the floating plate according to an embodiment of the present invention;
fig. 8 is a schematic view of a track system of an embodiment 2 of the dynamic vibration absorber.
The vibration isolator comprises a mass block 1, an elastic base plate 2, mounting grooves 3, a particle damper 4, a blind hole 5, a threaded sleeve 6, a floating plate 7, a vibration isolator 8, a foundation 9, a reinforcing steel bar support 10 and a placing groove 11.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to the attached drawings 1 to 4 of the invention, the dynamic vibration absorber is arranged on a floating plate and comprises a mass block 1 and an elastic base plate 2 for absorbing vibration, a steel bar support 10 is embedded in the mass block 1, the steel bar support 10 comprises a plurality of transverse steel bar frames and a plurality of longitudinal steel bar frames, and the transverse steel bar frames are fixedly connected with the longitudinal steel bar frames; the elastic backing plate 2 is fixedly connected to the periphery of the bottom end of the mass block 1 and the periphery of the bottom of the side wall.
Specifically, the top of quality piece 1 is equipped with a plurality of blind holes 5, is equipped with threaded sleeve 6 of hoist and mount usefulness in the blind hole 5, and threaded sleeve 6's mouth of pipe department is equipped with dustproof dirt proof boot of usefulness, sets up threaded sleeve and is convenient for lift by crane the quality piece, sets up the dirt proof boot, protects threaded sleeve's clean and tidy nature.
More specifically, the quality piece chooses C40 concrete for use, and horizontal reinforcing bar frame and vertical reinforcing bar frame are the rectangle, and horizontal reinforcing bar frame is laid for 6 intervals, and vertical reinforcing bar frame is 4, and the interval is laid.
More specifically, the material of the elastic backing plate is rubber, and the parameters of rigidity, damping and size of the elastic backing plate can be set according to the control requirement of a specific frequency of the system.
Example 2
Referring to the attached drawings 4 to 8 of the invention, the dynamic vibration absorber is arranged on a floating plate and comprises a mass block 1 and an elastic cushion plate 2 for absorbing vibration, a steel bar support 10 is embedded in the mass block 1, the steel bar support 10 comprises a plurality of transverse steel bar frames and a plurality of longitudinal steel bar frames, and the transverse steel bar frames are fixedly connected with the longitudinal steel bar frames; the elastic backing plate 2 is fixedly connected to the periphery of the bottom end of the mass block 1 and the periphery of the bottom of the side wall.
Specifically, the middle of the bottom end face of the mass block 1 is provided with a mounting groove 3, a particle damper 4 is embedded in the mounting groove 3, the particle damper 4 comprises a damping cavity and a plurality of damping particles, and the plurality of damping particles are arranged in the damping cavity, so that the vibration damping effect is further improved.
The damping cavity is made of non-conductive materials such as plastics, and the damping particles are steel quality balls with the outer surfaces coated with insulating materials.
Specifically, the top of quality piece 1 is equipped with two blind holes 5, and two blind hole correspondences set up the both sides at the mounting groove, set up threaded sleeve 6 of hoist and mount usefulness in the blind hole 5, are equipped with dustproof dirt proof boot in the threaded sleeve 6, set up threaded sleeve and be convenient for lift by crane the quality piece, set up the dirt proof boot, protect threaded sleeve's clean and tidy nature.
More specifically, the quality piece chooses for use C40 concrete, and horizontal reinforcing bar frame and vertical reinforcing bar frame are the rectangle, and horizontal reinforcing bar frame is 6 and three lays in one side of mounting groove for a set of interval, and three correspond for a set of another side of laying in the mounting groove, and vertical reinforcing bar frame is 4, and per two are the both sides of laying in the mounting groove for a set of interval, installation granule damper in the mounting groove of being convenient for.
The parameters of the elastic backing plate such as rigidity, damping and size can be set according to the control requirement of the specific frequency of the system.
In addition, the invention also discloses a floating plate structure which comprises a power vibration absorption device and a floating plate, wherein a placing groove is arranged in the middle of the top end of the floating plate, the power vibration absorption device is horizontally and correspondingly placed in the placing groove, vibration isolators are arranged in the floating plate and correspond to two sides of the power vibration absorption device, the bottom ends of the vibration isolators are fixed on a foundation, the bottom ends of the floating plate and the foundation are reserved with buffer intervals, and correspondingly, elastic base plates on the bottom and the side wall of the power vibration absorption device are in contact with the floating plate.
Specifically, the vibration isolator is a linear steel spring vibration isolator.
Furthermore, the invention also discloses a track system which comprises the floating plates, wherein the floating plates are laid on the track bed, and the power vibration absorption devices are distributed at intervals along the length direction of the track bed, so that the track system has a good vibration absorption effect.
The embodiment 1 of the invention can be matched with any one of the vibration isolators with the nonlinear damping steel spring vibration isolator, the nonlinear damping double-rigidity steel spring vibration isolator and the rubber disc spring composite vibration isolator for use.
The embodiment 2 of the invention can be matched with any one of the vibration isolators with the nonlinear damping steel spring vibration isolator, the nonlinear damping double-rigidity steel spring vibration isolator and the rubber disc spring composite vibration isolator for use.
The invention thus has many different embodiments for combined use.
Vibration reduction principle of the particle damper: when the structure vibrates, the vibration energy is consumed by utilizing the collision and friction among the damping particles and the collision and friction between the damping particles and the inner wall of the damping cavity, and the aim of vibration reduction is further fulfilled.
Compared with other types of dampers, the damper has the advantages of simple structure, low cost, wide damping frequency band and small influence on an installation body.
When the vibration isolator is specifically arranged and used, the type of the vibration isolator and the type of the vibration absorber are properly selected, the arrangement mode and design parameters are based on actual use, and the coupling relation between the vibration absorber and the floating plate track can be properly adjusted, so that the effect of reducing the low-frequency vibration of the floating plate track is achieved, the high-frequency vibration of the track system can be reduced, and the vibration reduction performance of the floating plate track system is improved.
The specific installation steps of embodiment 1 of the invention are as follows: bury reinforcing bar support underground earlier, specifically include horizontal reinforcing bar frame and vertical reinforcing bar frame, horizontal reinforcing bar frame and vertical reinforcing bar frame fixed connection enclose through the baffle and establish the shaping, toward waiting to pour C40 reinforced concrete in the casting die, hit before the concrete fastening and establish the screw hole, bury threaded sleeve pipe underground in the screw hole, it uses to stew a period shaping.
The specific installation steps of embodiment 2 of the invention are as follows: bury reinforcing bar support underground earlier, specifically include horizontal reinforcing bar frame and vertical reinforcing bar frame, horizontal reinforcing bar frame and vertical reinforcing bar frame fixed connection enclose through the baffle and establish the shaping, place the module toward waiting to pour in the mould, reserve the mounting groove when pouring, pour C40 reinforced concrete, beat before the concrete fastening and establish the screw hole, bury threaded sleeve underground in the screw hole, it uses to stew the shaping of a period.
For the device and the using method disclosed by the embodiment, the description is simple because the device and the using method correspond to the method disclosed by the embodiment, and the relevant points can be referred to the description of the method part.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110163719.7A CN112813738A (en) | 2021-02-05 | 2021-02-05 | Dynamic vibration damping device, floating plate structure with same and floating plate track system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110163719.7A CN112813738A (en) | 2021-02-05 | 2021-02-05 | Dynamic vibration damping device, floating plate structure with same and floating plate track system |
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| Publication Number | Publication Date |
|---|---|
| CN112813738A true CN112813738A (en) | 2021-05-18 |
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|---|---|---|---|
| CN202110163719.7A Pending CN112813738A (en) | 2021-02-05 | 2021-02-05 | Dynamic vibration damping device, floating plate structure with same and floating plate track system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103526651A (en) * | 2013-07-30 | 2014-01-22 | 中铁二院工程集团有限责任公司 | Passive type power vibration absorption track slab |
| CN104594137A (en) * | 2014-12-01 | 2015-05-06 | 同济大学 | Urban rail transit shock absorption type floating slab rail system |
| US20160298300A1 (en) * | 2013-07-10 | 2016-10-13 | Qingdao Create Environment Control Technology Co., Ltd. | Rail vibration absorber |
| CN110593023A (en) * | 2019-08-30 | 2019-12-20 | 罗桂花 | Vibration and noise reduction device for track floating plate |
| CN214656017U (en) * | 2021-02-05 | 2021-11-09 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Dynamic vibration damping device and floating slab structure and floating slab track system having the same |
-
2021
- 2021-02-05 CN CN202110163719.7A patent/CN112813738A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160298300A1 (en) * | 2013-07-10 | 2016-10-13 | Qingdao Create Environment Control Technology Co., Ltd. | Rail vibration absorber |
| CN103526651A (en) * | 2013-07-30 | 2014-01-22 | 中铁二院工程集团有限责任公司 | Passive type power vibration absorption track slab |
| CN104594137A (en) * | 2014-12-01 | 2015-05-06 | 同济大学 | Urban rail transit shock absorption type floating slab rail system |
| CN110593023A (en) * | 2019-08-30 | 2019-12-20 | 罗桂花 | Vibration and noise reduction device for track floating plate |
| CN214656017U (en) * | 2021-02-05 | 2021-11-09 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Dynamic vibration damping device and floating slab structure and floating slab track system having the same |
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