CN113802480A - Distributed additional damping structure sound barrier vibration attenuation energy dissipation device - Google Patents
Distributed additional damping structure sound barrier vibration attenuation energy dissipation device Download PDFInfo
- Publication number
- CN113802480A CN113802480A CN202111176839.7A CN202111176839A CN113802480A CN 113802480 A CN113802480 A CN 113802480A CN 202111176839 A CN202111176839 A CN 202111176839A CN 113802480 A CN113802480 A CN 113802480A
- Authority
- CN
- China
- Prior art keywords
- vibration
- damping
- sound barrier
- vibration reduction
- supporting plate
- Prior art date
- 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.)
- Pending
Links
- 238000013016 damping Methods 0.000 title claims abstract description 84
- 230000004888 barrier function Effects 0.000 title claims abstract description 50
- 230000021715 photosynthesis, light harvesting Effects 0.000 title abstract description 13
- 230000009467 reduction Effects 0.000 claims abstract description 64
- 230000007246 mechanism Effects 0.000 claims abstract description 54
- 229910052751 metal Inorganic materials 0.000 claims description 34
- 239000002184 metal Substances 0.000 claims description 34
- 230000003139 buffering effect Effects 0.000 claims description 27
- 239000010410 layer Substances 0.000 claims description 17
- 229910052755 nonmetal Inorganic materials 0.000 claims description 17
- 229920001971 elastomer Polymers 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 8
- 239000002923 metal particle Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract description 5
- 238000005336 cracking Methods 0.000 abstract description 5
- 238000003825 pressing Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 8
- 230000006870 function Effects 0.000 description 8
- 238000005265 energy consumption Methods 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000013528 metallic particle Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000003190 viscoelastic substance Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
- E01D19/103—Parapets, railings ; Guard barriers or road-bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0047—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with open cavities, e.g. for covering sunken roads
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a distributed additional damping structure sound barrier vibration damping energy dissipation device, which comprises: the supporting mechanism comprises an upper supporting plate and a lower supporting plate which are arranged at intervals, and a mounting area is formed between the upper supporting plate and the lower supporting plate; the first vibration reduction mechanism is fixedly arranged in the mounting area and comprises an elastic pad, a limiting ring and a vibration reduction damper, the top of the vibration reduction damper is fixedly connected with the upper supporting plate, and the bottom of the vibration reduction damper is abutted against the elastic pad; and the second vibration reduction mechanism and the first vibration reduction mechanism are arranged at intervals and are fixedly arranged in the mounting area. Enough bearing capacity is provided through the vibration reduction and energy dissipation device to bear the sound barrier, the vibration of the sound barrier on the upper part of the bridge can be effectively reduced, and the phenomena of bolt falling, cracking of an acrylic plate, breaking of an aluminum alloy pressing strip and the like are avoided.
Description
Technical Field
The invention relates to the technical field of civil engineering, in particular to a sound barrier vibration damping and energy dissipation device with a distributed additional damping structure.
Background
In 2003, the sound barrier on the high speed railways from conlon, germany to frankfurt was destroyed by the pulsating force of train operation. The main reasons are that the natural frequency of the sound barrier is close to the frequency of the interference force, the dynamic response of the structure is increased, the force and the column are subjected to bending deformation of different degrees under the influence of dynamic load, the panel is twisted, and the part connected between the unit plates through the rivet is damaged. In domestic rail transit, sound barriers on viaducts of urban rail transit not only on high-speed railways but also in urban rail transit operated at a relatively low speed (less than or equal to 100km/h) have phenomena such as bolt falling, acrylic plate cracking, aluminum alloy batten breaking and the like. These engineering problems not only weaken or even lose the sound insulation properties of the sound barrier, but also create a safety hazard in the running of the train.
In actual conditions, the overhead rail transit bridge is last attached to the facility especially sound barrier structure and is sent the vibration influence by the car for a long time, and the track structure damping is paid attention to more to current damping measure, and bridge structures subtracts shock insulation/vibration measure and can aggravate the vibration of bridge superstructure like basin formula rubber bearing, rubber damping support etc. and current bearing structure is difficult to satisfy the demand of vertical and level to bearing capacity simultaneously. The sound barrier structure is widely applied to rail transit as an effective noise reduction measure, and if the vibration of the sound barrier structure cannot be effectively reduced, the structural noise of vibration radiation of the sound barrier structure can be increased, so that a reasonable and effective vibration reduction and isolation measure is necessary, sufficient vertical and horizontal vibration reduction and isolation measures can be provided, the safety of the sound barrier structure can be guaranteed, and the noise reduction effect of the sound barrier structure can be guaranteed by effectively reducing the vibration of the sound barrier structure.
Disclosure of Invention
In view of the above, there is a need to provide a distributed damping structure for damping energy consumption of a sound barrier, so as to overcome the deficiencies of the prior art, and in particular to reduce the vibration of the sound barrier structure on a viaduct.
According to one aspect of the present invention, there is provided a sound barrier vibration damping and energy dissipating device with a distributed additional damping structure, comprising:
the supporting mechanism comprises an upper supporting plate and a lower supporting plate which are arranged at intervals, and an installation area is formed between the upper supporting plate and the lower supporting plate;
the first vibration reduction mechanism is fixedly arranged in the installation area and comprises an elastic cushion, a limiting ring and a vibration reduction damper, the elastic cushion is arranged on the lower supporting plate, the limiting ring is arranged on the lower supporting plate and sleeved on the peripheral wall of the elastic cushion to limit the elastic cushion, the top of the vibration reduction damper is fixedly connected with the upper supporting plate, and the bottom of the vibration reduction damper is abutted to the elastic cushion;
second damping mechanism, with first damping mechanism interval set up and fixed mounting in the installation area, second damping mechanism includes two wedge fixed blocks, the hollow post of buffering and lead core, two the wedge fixed block respectively fixed mounting in go up the backup pad with on the backup pad, and two the wedge face of wedge fixed block sets up in opposite directions, two terminal surfaces of the hollow post of buffering respectively with corresponding two wedge face threaded connection, the lead core with the hollow inner circle interference fit of the hollow post of buffering, just the both ends of lead core respectively with two the wedge face fixed connection of wedge fixed block.
According to some embodiments, the vibration damper comprises a shell, two metal elastic pieces and metal or nonmetal particles, wherein the two metal elastic pieces are arranged in the shell at intervals from top to bottom so as to divide the vibration damper into three cavities, and each cavity is filled with metal or nonmetal particle groups.
According to some embodiments, the two metal elastic pieces are arranged in parallel, and two ends of each metal elastic piece are fixedly connected with trisection lines in the height direction of the shell sleeve respectively, so that the vibration-damping damper is divided into three cavities with the same volume.
According to some embodiments, the vibration damper further comprises a buffer layer annularly disposed on an inner wall of the shell, the metallic or non-metallic particle group abutting the buffer layer.
According to some embodiments, the population of metallic or non-metallic particles comprises round particles of an elastomeric material having a diameter of 2-10 mm.
According to some embodiments, the stop collar is higher than the resilient pad;
the first vibration reduction mechanism further comprises a sealing ring, and the sealing ring is arranged between the limiting ring and the vibration reduction damper to protect the elastic pad.
According to some embodiments, at least two second vibration reduction mechanisms are provided, and at least two second vibration reduction mechanisms are respectively provided on two opposite sides of the first vibration reduction mechanism.
According to some embodiments, the lead is coaxially disposed with the buffer hollow column.
According to some embodiments, the wedge-shaped fixing block is in a triangular column shape, and the inclination angle of the two wedge-shaped surfaces relative to the horizontal plane is 15-45 degrees.
According to some embodiments, the hollow column of buffering includes multilayer rubber circle and multilayer clamping piece, wherein every layer of rubber circle respectively with connect gradually between every layer of clamping piece, the surface of the hollow column of buffering is equipped with the chloroprene rubber protective layer.
Compared with the prior art, the invention has the following beneficial effects:
the top and the last backup pad rigid coupling of the damping attenuator through first damping mechanism, bottom and cushion butt for through the energy of backup pad isotructure transmission change kinetic energy in the damping attenuator, play the effect of damping power consumption, specifically do, in order to divide into three cavity with the damping attenuator, all pack in every cavity has metal or non-metallic granule crowd. The energy transmitted by the lower supporting plate through the elastic cushion and other structures is converted into the kinetic energy of the metal or nonmetal particle groups, and the kinetic energy collides with each other in the buffer material, so that the effects of vibration reduction and energy consumption are achieved. And the elastic cushion positioned at the bottom of the vibration reduction damper bears the bearing force applied by the vibration reduction damper and further reduces the longitudinal vibration at the same time, thereby playing the vibration reduction effect. Furthermore, the second vibration reduction mechanism and the first vibration reduction mechanism are arranged at intervals, when the second vibration reduction mechanism is stressed, the plastic deformation of the lead core in the buffering hollow column has large hysteretic damping, more energy is dissipated, the vibration reduction function is increased, and the buffering support composed of the buffering hollow column and the lead core which are obliquely arranged on the two wedge-shaped fixed blocks enables the buffering support to have sufficient vertical rigidity and vertical bearing capacity and can bear certain horizontal load. The wedge-shaped fixing blocks are adopted, so that the device has enough horizontal bearing capacity, and the upper sound barrier structure is guaranteed not to be unstable. Therefore, the vibration reduction and energy dissipation device for the sound barrier provides enough bearing capacity to bear the sound barrier, can effectively reduce the vibration of the sound barrier on the upper part of a bridge, and avoids the phenomena of bolt falling, acrylic plate cracking, aluminum alloy depression bar breaking and the like of the sound barrier.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic perspective view of a distributed additional damping structure of a sound barrier vibration damping energy dissipation device according to the present invention;
fig. 2 is a schematic structural diagram of a sound barrier vibration damping and energy dissipating device with a distributed additional damping structure according to the present invention;
fig. 3 is a schematic structural diagram of an installed sound barrier vibration damping and energy dissipating device with a distributed additional damping structure according to the present invention.
In the figure: the damping device comprises a supporting mechanism 100, an upper supporting plate 110, a lower supporting plate 120, a mounting area 130, a first damping mechanism 200, an elastic pad 210, a limiting ring 220, a damping damper 230, a shell 231, a metal elastic sheet 232, a metal or nonmetal particle group 233, a buffer layer 234, a sealing ring 240, a second damping mechanism 300, a wedge-shaped fixed block 310, a buffer hollow column 320 and a lead core 330.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-3, the present invention provides a distributed additional damping structure of a noise barrier vibration damping and energy dissipating device, which includes a supporting mechanism 100, a first vibration damping mechanism 200, and a second vibration damping mechanism 300, wherein the supporting mechanism 100 includes an upper supporting plate 110 and a lower supporting plate 120 that are spaced apart from each other, and a mounting region 130 is formed between the upper supporting plate 110 and the lower supporting plate 120. The first vibration reduction mechanism 200 is fixedly installed in the installation area 130, the first vibration reduction mechanism 200 includes an elastic pad 210, a limiting ring 220 and a vibration reduction damper 230, the elastic pad 210 is arranged on the lower support plate 120, the limiting ring 220 is installed on the lower support plate 120 and sleeved on the peripheral wall of the elastic pad 210 to limit the elastic pad 210, the top of the vibration reduction damper 230 is fixedly connected with the upper support plate 110, and the bottom of the vibration reduction damper is abutted to the elastic pad 210. Second damping mechanism 300 and first damping mechanism 200 interval setting and fixed mounting are in installation region 130, second damping mechanism 300 includes two wedge fixed blocks 310, the hollow post 320 of buffering and lead core 330, two wedge fixed blocks 310 are fixed mounting respectively on last backup pad 110 and lower support plate 120, and the wedge face of two wedge fixed blocks 310 sets up in opposite directions, two terminal surfaces of the hollow post 320 of buffering respectively with two wedge face threaded connection that correspond, lead core 330 and the hollow inner circle interference fit of the hollow post 320 of buffering, and the both ends of lead core 330 respectively with the wedge face fixed connection of two wedge fixed blocks 310.
In the above solution, the top of the vibration damper 230 of the first vibration damping mechanism 200 is fixedly connected to the upper support plate 110, and the bottom thereof is abutted against the elastic pad 210, so that energy transmitted through the structure of the elastic pad 210 and the like by the lower support plate 120 is converted into kinetic energy in the vibration damper 230, thereby performing a vibration damping and energy dissipation function, and the elastic pad 210 located at the bottom of the vibration damper 230 bears the bearing force applied by the vibration damper 230 and further reduces longitudinal vibration, thereby performing a vibration damping effect. Further, the second vibration reduction mechanism 300 and the first vibration reduction mechanism 200 are arranged at intervals, when the second vibration reduction mechanism 300 is stressed, the plastic deformation of the lead core 330 in the buffering hollow column 320 has large hysteretic damping, more energy is dissipated, the vibration reduction function is increased, and the buffering support composed of the buffering hollow column 320 and the lead core 330 which are obliquely arranged on the two wedge-shaped fixing blocks 310 is enabled to have enough vertical rigidity and vertical bearing capacity and can bear certain horizontal load at the same time, so that the structure is ensured not to be unstable. Therefore, the vibration reduction and energy dissipation device can effectively reduce the vibration of the sound barrier on the upper part of the bridge, and avoids the phenomena of bolt falling, cracking of the acrylic plate, breaking of the aluminum alloy pressing strip and the like of the sound barrier.
As shown in fig. 2, the vibration damper 230 includes a shell 231, two metal spring pieces 232, and metal or non-metal particles, wherein the two metal spring pieces 232 are disposed in the shell 231 at intervals from top to bottom to divide the vibration damper 230 into three cavities, and each cavity is filled with a metal or non-metal particle group 233. The energy transmitted through the lower support plate 120 via the elastic pad 210 and other structures is converted into kinetic energy of the metal or non-metal particle groups, and the kinetic energy collides with each other in the buffer material, thereby performing the functions of vibration reduction and energy dissipation. Wherein the housing 231 may be formed by enclosing steel plates.
The two metal elastic pieces 232 are arranged in parallel, and two ends of each metal elastic piece 232 are fixedly connected with the trisection line of the height direction of the shell 231 respectively, so that the vibration damper 230 is divided into three cavities with the same volume. Further, the vibration damper 230 further includes a buffer layer 234, the buffer layer 234 is disposed around the inner wall of the housing 231, and the metal or non-metal particle group 233 abuts against the buffer layer 234. The shell 231 is separated by two metal elastic sheets 232, so that the vibration damper 230 has three cavities with equal volume from top to bottom, each cavity is internally and horizontally paved with a layer of metal or nonmetal particle group 233, and the inner wall is annularly provided with a buffer layer 234. The energy transferred through the lower structure of the vibration damper 230 is converted into kinetic energy of the metal or non-metal particle groups, and the kinetic energy collides with each other between the buffer layers 234, thereby performing a better vibration damping and energy dissipating function.
It should be noted that in this embodiment, the metal elastic sheet 232 is a metal sheet with high elasticity, the metal or non-metal particle group 233 includes round particles of high elasticity material with a diameter of 2-10mm, and the buffer layer 234 is made of a buffer material, which may specifically be a high damping viscoelastic material.
According to some embodiments, in order to prevent the vibration damper 230 from being displaced during the stress process to damage the resilient pad 210 at the bottom of the vibration damper 230, in this embodiment, the retainer ring 220 is configured to be higher than the resilient pad 210, the first vibration damping mechanism 200 further includes a seal ring 240, the seal ring 240 is disposed between the retainer ring 220 and the vibration damper 230 to prevent the bottom of the vibration damper 230 from being knocked down to the corner of the resilient pad 210, so as to protect the resilient pad 210, wherein the resilient pad 210 may be a rubber pad.
At least two second vibration reduction mechanisms 300 are provided, and at least two second vibration reduction mechanisms 300 are respectively provided on two opposite sides of the first vibration reduction mechanism 200. Under the effect of the cooperative vibration reduction and energy consumption of the first vibration reduction mechanism 200 and the second vibration reduction mechanism 300, the vibration reduction and energy consumption device for the sound barrier is simple in structure, clear in force transmission and stress, low in manufacturing cost and convenient to construct and install.
In addition, the wedge-shaped fixing block 310 is in a triangular column shape, the inclination angle of the two wedge-shaped surfaces relative to the horizontal plane is 15-45 degrees, specifically 30 degrees, and the buffering hollow column 320 is obliquely arranged on the wedge-shaped fixing block 310, so that the wedge-shaped fixing block has enough vertical rigidity and vertical bearing capacity, and can bear certain horizontal load at the same time, and the structure is not unstable.
According to some embodiments, the buffer hollow column 320 comprises multiple layers of rubber rings and clips, wherein the multiple layers of rubber rings and clips are connected with each other, and the rubber rings are specifically seen to be made of a high damping viscoelastic material. In addition, a neoprene protective layer is disposed on the outer surface of the buffer hollow column 320 to effectively protect the buffer hollow column 320.
It is noted that the lead 330 has a lower yield point and a higher plastic deformation capability, which can make the damping ratio of the mount reach 20% -30%, and at the same time, increase the initial stiffness of the second vibration damping mechanism 300, and when the second vibration damping mechanism 300 is deformed horizontally, the entire lead 330 is forced to undergo shear deformation to absorb energy due to being constrained by the two wedge-shaped fixing blocks 310. The initial shear stiffness of the laminated rubber support can be more than 10 times of the stiffness of the common laminated rubber support, and the stiffness after yielding is close to the stiffness of the common laminated rubber support. The lead core 330 is not easy to absorb energy when used alone, but the performance of the lead core 330 is stable, and the lead core 330 can be crystallized at normal temperature, and the lead core 330 in the buffering hollow column 320 can play a stable energy consumption role when repeatedly deformed by utilizing the restraint of the buffering hollow column 320 on the lead core 330, a dynamic recovery and recrystallization process and the action of the shearing tension of the buffering hollow column 320.
According to some embodiments, the lead 330 is arranged coaxially with the buffer hollow column 320 and, due to the low yield stress of lead (about 7MPa) and the good fatigue properties under plastic deformation conditions, the lead in elasticity has a large initial stiffness, which is large in vertical direction to support the superstructure weight. When the deflection is larger, the equivalent horizontal rigidity is very small, the inherent period of the bridge can be effectively prolonged, and the vibration reaction is reduced, so that the good usability under the action of the small horizontal load of wind power, braking force and the like is ensured.
As shown in fig. 3, the sound barrier vibration damping and energy dissipating device is located on the flange of the rail overpass box beam, and can be located at the bottom of the sound barrier column in a distributed intensive or full-paved manner according to the vibration damping and energy dissipating effect, the lower supporting plate 120 is connected with the flange of the rail overpass box beam by high-strength bolts, and the bottom of the sound barrier column is located right above the vibration damping damper 230 and is connected with the upper supporting plate 110 by bolts.
Therefore, the top of the vibration damper 230 of the first vibration damping mechanism 200 is fixedly connected to the upper support plate 110, and the bottom thereof is abutted to the elastic pad 210, so that the energy transmitted through the structure of the elastic pad 210 and the like by the lower support plate 120 is converted into kinetic energy in the vibration damper 230, thereby performing the vibration damping and energy dissipation functions, specifically, the vibration damper 230 is divided into three cavities, and each cavity is filled with the metal or nonmetal particle group 233. The energy transmitted through the lower support plate 120 via the elastic pad 210 and other structures is converted into kinetic energy of the metal or non-metal particle groups, and the kinetic energy collides with each other in the buffer material, thereby performing the functions of vibration reduction and energy dissipation. And the elastic pad 210, which is located at the bottom of the vibration-damping damper 230, bears the bearing force applied by the vibration-damping damper 230 while further reducing the longitudinal vibration, thereby achieving the effect of vibration damping. Further, the second vibration reduction mechanism 300 and the first vibration reduction mechanism 200 are arranged at intervals, when the second vibration reduction mechanism 300 is stressed, the plastic deformation of the lead core 330 in the buffering hollow column 320 has large hysteresis damping, more energy is dissipated, and the vibration reduction function is improved, and the buffering support composed of the buffering hollow column 320 and the lead core 330 which are obliquely arranged on the two wedge-shaped fixing blocks 310 has enough vertical rigidity and vertical bearing capacity, and can bear certain horizontal load. The wedge-shaped fixing block 310 is adopted, so that the device has enough horizontal bearing capacity, and the upper sound barrier structure is guaranteed not to be unstable. Therefore, the vibration reduction and energy dissipation device for the sound barrier provides enough bearing capacity to bear the sound barrier, can effectively reduce the vibration of the sound barrier on the upper part of a bridge, and avoids the phenomena of bolt falling, acrylic plate cracking, aluminum alloy depression bar breaking and the like of the sound barrier.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Claims (10)
1. The utility model provides a distributed additional damping structure's sound barrier damping power consumption device which characterized in that includes:
the supporting mechanism comprises an upper supporting plate and a lower supporting plate which are arranged at intervals, and an installation area is formed between the upper supporting plate and the lower supporting plate;
the first vibration reduction mechanism is fixedly arranged in the installation area and comprises an elastic cushion, a limiting ring and a vibration reduction damper, the elastic cushion is arranged on the lower supporting plate, the limiting ring is arranged on the lower supporting plate and sleeved on the peripheral wall of the elastic cushion to limit the elastic cushion, the top of the vibration reduction damper is fixedly connected with the upper supporting plate, and the bottom of the vibration reduction damper is abutted to the elastic cushion;
second damping mechanism, with first damping mechanism interval set up and fixed mounting in the installation area, second damping mechanism includes two wedge fixed blocks, the hollow post of buffering and lead core, two the wedge fixed block respectively fixed mounting in go up the backup pad with on the backup pad, and two the wedge face of wedge fixed block sets up in opposite directions, two terminal surfaces of the hollow post of buffering respectively with corresponding two wedge face threaded connection, the lead core with the hollow inner circle interference fit of the hollow post of buffering, just the both ends of lead core respectively with two the wedge face fixed connection of wedge fixed block.
2. The sound barrier vibration damping and energy dissipating device with distributed additional damping structures as claimed in claim 1,
the vibration reduction damper comprises a shell sleeve, two metal elastic sheets and metal or nonmetal particle groups, wherein the two metal elastic sheets are arranged in the shell sleeve at intervals from top to bottom so as to divide the vibration reduction damper into three cavities, and each cavity is filled with the metal or nonmetal particle groups.
3. The sound barrier vibration damping and energy dissipating device with distributed additional damping structures as claimed in claim 2,
the two metal elastic pieces are arranged in parallel, and two ends of each metal elastic piece are fixedly connected with trisection lines in the height direction of the shell sleeve respectively so as to divide the vibration damper into three cavities with the same volume.
4. The sound barrier vibration damping and energy dissipating device with distributed additional damping structures as claimed in claim 3,
the vibration-damping damper further comprises a buffer layer, the buffer layer is annularly arranged on the inner wall of the shell sleeve, and the metal or nonmetal particle group is abutted to the buffer layer.
5. The sound barrier vibration damping and energy dissipating device with distributed additional damping structures as claimed in claim 3,
the metal or non-metal particle group comprises round particles of high-elasticity materials with the diameter of 2-10 mm.
6. The sound barrier vibration damping and energy dissipating device with distributed additional damping structures as claimed in claim 5,
the limiting ring is higher than the elastic pad;
the first vibration reduction mechanism further comprises a sealing ring, and the sealing ring is arranged between the limiting ring and the vibration reduction damper to protect the elastic pad.
7. The sound barrier vibration damping and energy dissipating device with distributed additional damping structures as claimed in claim 1,
the second vibration reduction mechanisms are at least two, and at least two second vibration reduction mechanisms are respectively arranged on two opposite sides of the first vibration reduction mechanism.
8. The sound barrier vibration damping and energy dissipating device with distributed additional damping structures as claimed in claim 7,
the lead core and the buffer hollow column are coaxially arranged.
9. The sound barrier vibration damping and energy dissipating device with distributed additional damping structures as claimed in claim 8,
the wedge-shaped fixing block is in a triangular column shape, and the inclination angle of the two wedge-shaped surfaces relative to the horizontal plane is 15-45 degrees.
10. The sound barrier vibration damping and energy dissipating device with distributed additional damping structures according to claim 9,
the hollow post of buffering includes multilayer rubber circle and multilayer clamping piece, wherein every layer of rubber circle respectively with every layer of clamping piece between connect gradually, the surface of the hollow post of buffering is equipped with the chloroprene rubber protective layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111176839.7A CN113802480A (en) | 2021-10-09 | 2021-10-09 | Distributed additional damping structure sound barrier vibration attenuation energy dissipation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111176839.7A CN113802480A (en) | 2021-10-09 | 2021-10-09 | Distributed additional damping structure sound barrier vibration attenuation energy dissipation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113802480A true CN113802480A (en) | 2021-12-17 |
Family
ID=78897502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111176839.7A Pending CN113802480A (en) | 2021-10-09 | 2021-10-09 | Distributed additional damping structure sound barrier vibration attenuation energy dissipation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113802480A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821248A (en) * | 2014-03-09 | 2014-05-28 | 北京工业大学 | Limit connecting rod type low frequency vibration isolation energy-consumption support |
| CN104595416A (en) * | 2014-12-03 | 2015-05-06 | 上海大学 | Separation type damping energy consumption three-dimensional seismic isolation support |
| CN104763066A (en) * | 2015-03-13 | 2015-07-08 | 上海宝冶集团有限公司 | Three-dimensional shock isolation device |
| CN108625285A (en) * | 2018-06-14 | 2018-10-09 | 华东交通大学 | A kind of novel bridge damper structure |
| CN210288163U (en) * | 2019-06-05 | 2020-04-10 | 大连天源环境工程有限公司 | Novel sound barrier easy to assemble |
| CN211547437U (en) * | 2019-12-10 | 2020-09-22 | 江苏恒业交通工程有限公司 | Sound barrier with anti-seismic structure |
-
2021
- 2021-10-09 CN CN202111176839.7A patent/CN113802480A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821248A (en) * | 2014-03-09 | 2014-05-28 | 北京工业大学 | Limit connecting rod type low frequency vibration isolation energy-consumption support |
| CN104595416A (en) * | 2014-12-03 | 2015-05-06 | 上海大学 | Separation type damping energy consumption three-dimensional seismic isolation support |
| CN104763066A (en) * | 2015-03-13 | 2015-07-08 | 上海宝冶集团有限公司 | Three-dimensional shock isolation device |
| CN108625285A (en) * | 2018-06-14 | 2018-10-09 | 华东交通大学 | A kind of novel bridge damper structure |
| CN210288163U (en) * | 2019-06-05 | 2020-04-10 | 大连天源环境工程有限公司 | Novel sound barrier easy to assemble |
| CN211547437U (en) * | 2019-12-10 | 2020-09-22 | 江苏恒业交通工程有限公司 | Sound barrier with anti-seismic structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202644389U (en) | Energy-consuming spherical steel supporting seat | |
| CN107268431A (en) | Self-resetting frictional damping shock mount and damping bridge | |
| CN111827098B (en) | Trigger type limited negative stiffness high-strength spring damping support | |
| CN112482600A (en) | Composite damper for reinforcing building frame | |
| CN201362820Y (en) | Fixed support for shock absorption and isolation of bridge | |
| CN110847406B (en) | Removable ripple viscous spring combination mild steel attenuator | |
| CN213203769U (en) | Bridge antidetonation bearing structure | |
| CN113802480A (en) | Distributed additional damping structure sound barrier vibration attenuation energy dissipation device | |
| CN106758900B (en) | Damping system of damping type railway metal sound barrier | |
| CN107447644B (en) | Seismic isolation and reduction system for large-span bridge | |
| CN111119034B (en) | Combined rubber shock-absorbing support with limiting rigidity difference of inhaul cable | |
| CN203346739U (en) | Vibration absorbing device for rail | |
| CN206843937U (en) | A kind of combined anti-seismic system and combined anti-seismic bridge | |
| CN203238538U (en) | Flat spring plate type rubber expansion joint | |
| CN214993034U (en) | Buffering and energy dissipation bridge anti-seismic support | |
| CN213476601U (en) | Tensile elastic-plastic damping device | |
| CN106835952A (en) | A kind of combined anti-seismic system and combined anti-seismic bridge | |
| CN213740570U (en) | High-bearing spherical bridge support for highway engineering | |
| CN103147392A (en) | Steel bridge function separating shock-absorbing support | |
| CN203346787U (en) | Flat steel spring plate expansion joint | |
| CN110067192B (en) | High-speed rail bridge damping support with high damping self-resetting function and damping method | |
| CN111119549A (en) | Assembled soft collision energy consumption device and damping energy consumption system | |
| CN113152256B (en) | Assembled pre-compaction ball pivot type damping device | |
| CN220079705U (en) | Shock absorbing and isolating support with hydraulic damping | |
| CN215758493U (en) | E-type damping profile steel with high damping performance and damping composite structure thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211217 |