CN106758900B - Damping system of damping type railway metal sound barrier - Google Patents
Damping system of damping type railway metal sound barrier Download PDFInfo
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- CN106758900B CN106758900B CN201611229330.3A CN201611229330A CN106758900B CN 106758900 B CN106758900 B CN 106758900B CN 201611229330 A CN201611229330 A CN 201611229330A CN 106758900 B CN106758900 B CN 106758900B
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- 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
- E01F8/0029—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with porous surfaces, e.g. concrete with porous fillers
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Abstract
The invention relates to a damping system of a damping type railway metal sound barrier, belonging to the field of vibration and noise treatment in the field of environmental protection. The damping system comprises a damping structure, a damping structure and a damping structure, wherein the damping structure is positioned among a punching panel, a back panel and a main beam section bar of a metal sound barrier unit plate, the damping structure is positioned between metal sound barrier unit layers, the damping structure is positioned between a metal sound barrier combined unit plate and a protective cover section bar, and the damping structure is positioned between two sides of two ends of a metal sound barrier unit and H-shaped steel for installation. The damping system of the damping type railway metal sound barrier realizes multiple damping effects, so that the peak load of pulsating force generated when a train passes at a high speed on a steel upright is obviously reduced, and the structural safety and the fatigue life are greatly improved.
Description
Technical Field
The invention relates to a damping system of a damping type railway metal sound barrier, belonging to the technical field of vibration and noise treatment in the field of environmental protection.
Background
In recent years, China builds a large amount of high-speed rails and puts the high-speed rails into operation, and a sound barrier system is applied in a large amount for solving the noise pollution generated by the operation of the high-speed rails.
At present, the high-speed rail metal sound barrier put into use in China is introduced from foreign countries, a unit plate is generally in a buckling type thin shell structure, the metal plate bending lines at four corners of the cross section of the unit plate bear the maximum stress, and the control of the process is extremely important; the plate bending process easily causes damage to materials and greatly influences the fatigue life of the unit plates, and the technical problem that the interior of a product is damaged when the product leaves a factory due to the fact that process control is not strict exists generally. The technology introduced from abroad actually adopts a method for improving the structural rigidity to solve the problem of load resistance, reduces the internal stress and the stress amplitude of the material and further improves the fatigue resistance life, and does not essentially reduce the pulsating load.
Therefore, the damping system of the metal sound barrier, which can effectively weaken the pulsating load, reduce the peak load of the pulsating force transmitted to the sound barrier force-bearing frame and the steel upright post and improve the structural safety and the fatigue life, is a technical problem to be solved urgently in the technical field.
Disclosure of Invention
The invention aims to provide a damping system of a railway metal sound barrier, which can effectively weaken pulsating load, reduce the peak load transmitted to a sound barrier bearing frame and a steel upright post by pulsating force, and improve the safety of the structure and the fatigue life resistance.
In order to achieve the purpose, the invention adopts the following technical scheme:
damping formula railway metal sound barrier's damping system, its characterized in that: the damping structure is arranged between the punching panel, the back panel and the main beam section bar of the metal sound barrier unit panel, between the metal sound barrier unit panels, between the metal sound barrier combined unit panel and the protective cover section bar, and between two ends of the metal sound barrier unit and the H-shaped steel for installation.
Preferably, the damping structure between the punched panel, the back plate and the main beam profile of the metal sound barrier unit plate mainly comprises the punched panel, the back plate, an elastic damping material and the main beam profile, wherein the elastic damping material is located between the punched panel and the main beam profile or between the back plate and the main beam profile; the damping structure positioned between the metal sound barrier unit layers is mainly composed of elastic damping materials embedded in a mounting groove of a main beam section bar; the damping structure positioned between the metal sound barrier combined unit plate and the protective cover sectional material mainly comprises an elastic damping material arranged on an upper cover of the decoupling damping strip; the damping structure between the two sides of the two ends of the metal sound barrier unit and the installation H-shaped steel is mainly composed of elastic damping materials embedded on the end socket section.
Preferably, the elastic damping material is an ethylene propylene diene monomer foamed rubber strip.
Preferably, the damping structure between the punched panel, the back panel and the main beam profile of the metal sound barrier unit panel is as follows: the device comprises a main beam profile, a punching panel, a back plate, a reinforcing bar profile, a keel profile and rock wool, wherein two load shedding damping strips are respectively arranged on two sides of the main beam profile, the two load shedding damping strips on one side are arranged between the punching panel and the main beam profile, the two load shedding damping strips on the other side are arranged between the back plate and the main beam profile, and the punching panel and the back plate between the two load shedding damping strips are in a suspension state; the reinforcing rib profiles are respectively positioned on the inner sides of the punching panel and the back plate; the keel section is positioned between the reinforcing rib section and the rock wool.
Preferably, the specific structure of the damping structure between the metal sound barrier unit layers is as follows: the composite material comprises a main beam section, a punching panel, a back plate, a reinforcing bar section, a keel section and rock wool, wherein two sides of the main beam section are respectively provided with an interlayer damping strip; the main beam section is provided with two symmetrical mounting grooves, the interlayer damping strips are embedded in the mounting grooves of the main beam section, and the reinforcing rib section is respectively positioned on the inner sides of the punching panel and the back plate; the keel section is positioned between the reinforcing rib section and the rock wool.
Preferably, the specific structure of the damping structure between the metal sound barrier combined unit plate and the protective cover profile is as follows: the decoupling damping strip upper cover is buckled with the protective cover profile, and is connected with the main beam profile; the reinforcing rib profiles are respectively positioned on the inner sides of the punching panel and the back plate; the keel section is positioned between the reinforcing rib section and the rock wool.
Preferably, the damping structure between the two sides of the two ends of the metal sound barrier unit and the mounting H-shaped steel has the following specific structure: the steel plate comprises a punching panel, a back plate, a reinforcing rib profile, a keel profile, rock wool, a head sealing profile, H-shaped steel and a mounting damping strip; end socket sectional materials are arranged on two sides of two ends of the metal sound barrier unit, an installation groove is formed in each end socket sectional material, a damping strip is embedded in each installation groove, and each installation damping strip is located between each end socket sectional material and the corresponding H-shaped steel to form a damping structure; the punching face plate is welded with the reinforcing rib profile, the back plate is welded with the reinforcing rib profile, and the end socket profile is fastened with the keel profile.
Preferably, the punching panel and the back plate are aluminum alloy plates.
Preferably, the main beam section, the reinforcing rib section, the keel section, the end enclosure section, the protective cover section or the upper cover of the decoupling damping strip are all aluminum alloy sections.
Preferably, the load-shedding damping strip, the interlayer damping strip, the decoupling damping strip and the mounting damping strip are ethylene propylene diene monomer foamed rubber strips.
The invention has the advantages that:
the damping system of the metal sound barrier is a system for effectively weakening the transmission of pulsating load, reduces the peak load transmitted to a bearing frame and a steel upright post of the sound barrier by pulsating force by applying a damping buffer technology, and improves the structural safety and the fatigue life resistance.
The invention is further illustrated by the following figures and detailed description of the invention, which are not meant to limit the scope of the invention.
Drawings
Fig. 1 is a schematic diagram of a damping distribution structure of a damping system of the damping type railway metal sound barrier.
Fig. 2 is a schematic view of the damping structure among the punched panel, the back plate and the main beam profile of the damping system of the damping type railway metal sound barrier.
Fig. 3 is a schematic view of a damping structure between metal sound barrier unit layers of the damping system of the damping railway metal sound barrier of the present invention.
Fig. 4 is a schematic view of a damping structure between a metal sound barrier combined unit plate and a protective cover profile of the damping system of the damping type railway metal sound barrier.
FIG. 5 is a schematic view of the damping structure between the two sides of the metallic sound barrier unit and the H-shaped steel for installation of the damping system of the damping type railway metallic sound barrier of the present invention.
Description of the main reference numerals:
damping structure among punched panel, back plate and main beam section bar
Damping structure between metal sound barrier unit layers
Damping structure between metal sound barrier combined unit plate and bearing surface
Damping structure between two ends of metal sound barrier unit and H-shaped steel for installation
1 aluminum alloy girder section bar 2 panel that punches a hole
3 backboard 4 reinforcing rib section bar
5 fossil fragments section bar 6 rock wool
7 end socket section bar 8H-shaped steel
9 load shedding damping strip and 10 interlayer damping strips
11 decoupling damping strip 12 mounting damping strip
13 decoupling damping strip upper cover
Detailed Description
Example 1
As shown in fig. 1, the damping distribution structure of the damping system of the damping type railway metal sound barrier of the present invention is schematically shown, wherein (i) is a damping structure among a punched panel, a back plate and a main beam profile; secondly, a damping structure between the sound barrier unit layers is formed; the damping structure between the sound barrier combination and the protective cover section bar; and fourthly, a damping structure between two sides of two ends of the sound barrier unit and the H-shaped steel for installation.
The invention discloses a damping railway metal sound barrier damping system, which mainly comprises: the damping structure is arranged among the punching panel, the back plate and the main beam profile at the top end of the metal sound barrier; damping structures II arranged among the metal sound barrier unit layers are arranged, and in the embodiment 1, the number of the damping structures II is 3; the damping structure is arranged between the metal sound barrier combined unit plate and the protective cover sectional material; and the damping structure is arranged between two sides of two ends of the metal sound barrier unit and the H-shaped steel for installation.
FIG. 2 is a schematic view of the damping structure among the punched plate, the back plate and the main beam section of the damping system of the damping railway metal sound barrier of the present invention; the damping structure comprises a punching panel, a back plate and a main beam profile, wherein the damping structure comprises 1 an aluminum alloy main beam profile, 2 a punching panel, 3 a back plate, 4 a reinforcing rib profile, 5 a keel profile, 6 rock wool and 9 a load shedding damping strip.
The invention relates to a damping structure between a punched panel, a back plate and a main beam section bar of a damping system of a damping type railway metal sound barrier, which is a main functional structure and comprises the following components: the aluminum alloy main beam profile 1, the punching panel 2, the back plate 3, the reinforcing rib profiles 4 on two sides, the keel profile 5 and the rock wool 6 are respectively provided with two load shedding damping strips 9 on two sides. The two load-shedding damping strips 9 on one side are arranged between the punched panel 2 and the aluminum alloy main beam profile 1, the two load-shedding damping strips 9 on the other side are arranged between the back plate 3 and the aluminum alloy main beam profile 1, and the punched panel 2 and the back plate 3 between the two load-shedding damping strips 9 are in a suspension state; the reinforcing rib section bars 4 are respectively positioned at the inner sides of the punching panel 2 and the back plate 3; the keel section 5 is positioned between the reinforcing rib section 4 and the rock wool 6; the pulsating load is applied to the punching panel 2 and the back plate 3, is transmitted to the load-reducing damping strip 9 which is in contact with the punching panel and the back plate, the load-reducing damping strip 9 deforms, the energy is absorbed and consumed in the process, and then the energy is transmitted to the aluminum alloy main beam section bar 1, so that the load borne by the main bearing structure is weakened, and the fatigue resistance service life of the structure is further prolonged. The punching panel 2 and the back panel 3 are aluminum alloy plates, and the reinforcing rib section 4 and the keel section 5 are aluminum alloy sections; the load-reducing damping strip 9 is an ethylene propylene diene monomer foamed rubber strip.
FIG. 3 is a schematic view of a damping structure between metal sound barrier unit layers of the damping system of the damping railway metal sound barrier of the present invention; the second damping structure is a damping structure between metal sound barrier unit layers, and in the embodiment 1, 3 damping structures between metal sound barrier unit layers are arranged; wherein: 1 is aluminum alloy girder section bar, 2 is the panel that punches a hole, 3 is the backplate, 4 is the strengthening rib section bar, 5 is fossil fragments section bar, 6 is the rock wool, 10 is the damping strip between the layer.
The damping structure II between 3 metal sound barrier unit layers is arranged between the sound barrier unit layers which are longitudinally overlapped with each other, and the structure of the damping structure II between the layers is as follows: the steel plate comprises an aluminum alloy main beam section bar 1, a punching panel 2, a back plate 3, a reinforcing rib section bar 4, a keel section bar 5 and rock wool 6, wherein two sides of the aluminum alloy main beam section bar are respectively provided with an interlayer damping strip 10; the aluminum alloy main beam section 1 is provided with two symmetrical mounting grooves, the interlayer damping strips 10 are embedded in the mounting grooves of the aluminum alloy main beam section 1, and the reinforcing rib sections 4 are respectively positioned on the inner sides of the punching panel 2 and the back plate 3; the keel section 5 is positioned between the reinforcing rib section 4 and the rock wool 6; the punching panel 2 and the back panel 3 are aluminum alloy plates, and the reinforcing rib section 4 and the keel section 5 are aluminum alloy sections; the interlayer damping strip 10 is an ethylene propylene diene monomer foamed rubber strip; the interlayer damping structure can reduce the transmission and mutual rubbing of vibration between the sound barrier unit plates, reduce additional noise and prolong the collapse-resistant service life of the rock wool sound-absorbing material.
As shown in fig. 4, it is a schematic view of a damping structure between a metal sound barrier combined unit plate and a protective cover section bar of the damping system of the damping type railway metal sound barrier of the present invention; wherein: 1 is aluminum alloy girder section bar, 2 is the panel that punches a hole, 3 is the backplate, 4 is the strengthening rib section bar, 5 is the fossil fragments section bar, 6 is the rock wool, 11 is decoupling zero damping strip, 13 is decoupling zero damping strip upper shield.
The damping structure between the metal sound barrier combined unit plate and the protective cover section bar of the damping system of the damping type railway metal sound barrier is positioned at the lower part of the metal sound barrier combined unit plate, and the structure is as follows: the decoupling damping strip comprises an aluminum alloy main beam section bar 1, a punching panel 2, a back plate 3, a reinforcing rib section bar 4, a keel section bar 5 and rock wool 6, wherein the lower end of the aluminum alloy main beam section bar is provided with five decoupling damping strips 11, the decoupling damping strips 11 are positioned between an upper decoupling damping strip cover 13 and a protective cover section bar which are formed by the aluminum alloy section bar, the upper decoupling damping strip cover 13 is buckled with the protective cover section bar, and the upper decoupling damping strip cover 13 is integrally connected with the aluminum alloy main beam section bar 1; the reinforcing rib section bars 4 are respectively positioned at the inner sides of the punching panel 2 and the back plate 3; the keel section 5 is positioned between the reinforcing rib section 4 and the rock wool 6; the punching panel 2 and the back panel 3 are aluminum alloy plates, and the reinforcing rib section 4, the keel section 5, the decoupling damping strip upper cover 13 and the protective cover section are all aluminum alloy sections; the decoupling damping strip 11 is an ethylene propylene diene monomer foamed rubber strip.
The upper decoupling damping strip cover 13 is of a combined structure and is integrally connected with the aluminum alloy main beam profile 1; the decoupling damping strip upper cover 13 is of an inverted-E-shaped structure, and comprises a transverse rod and three vertical arms, wherein the three vertical arms are respectively provided with a socket with a downward opening, and small arms protruding out of the sockets on two sides of the combined upper cover profile are provided with fasteners for fastening the protective cover profile. The protective cover section bar is of a W-shaped structure and is provided with five grooves, the middle three grooves correspond to the bearing slots with the downward openings of the independent upper cover section bars or the combined upper cover section bars, the outer edges of the middle three grooves are provided with upward protruding fasteners, and the two grooves at the two ends correspond to the bearing slots with the downward openings of the main beam section bars. The inner sides of the two ends of the aluminum alloy main beam section bar 1 are respectively provided with a socket slot with a downward opening.
When the damping structure is used, the damping structure between the metal sound barrier combined unit plate and the bearing surface is positioned at the lower part of the metal sound barrier combined unit plate to form a good vibration isolation effect, namely, the coupling transmission of weakening vibration is released.
The protective cover section bar is contacted with the bearing surface; it is recommended to level the bearing surface and clean it before installation, and then apply a construction sealant, such as glass cement, to the corresponding location to fix the protective cover profile 4 to the bearing surface.
As shown in fig. 5, it is a schematic view of a damping structure between two sides of a metal sound barrier unit and H-shaped steel for installation of the damping system of the damping type railway metal sound barrier of the present invention; the damping structures between the two sides of the two ends of the metal sound barrier unit and the H-shaped steel for installation are positioned at the two ends of the metal sound barrier unit; the structure is as follows: 2, a punching panel, 3, a back plate, 4, a reinforcing rib profile, 5, a keel profile, 6, rock wool, 7, an end enclosure profile, 8, H-shaped steel and 12, wherein the end enclosure profile is provided with a damping strip; the metal sound barrier unit is characterized in that end socket sectional materials 7 are arranged on two sides of two ends of the metal sound barrier unit, mounting grooves are formed in the end socket sectional materials 7, damping strips 12 are embedded in the mounting grooves, and the mounting damping strips 12 are located between the end socket sectional materials 7 and the H-shaped steel 8 to form a damping structure; the punching panel 2 is welded with the reinforcing rib profile 4, the back plate 3 is welded with the reinforcing rib profile 4, and the end socket profile 7 is fastened with the keel profile; the punching panel 2 and the back panel 3 are aluminum alloy plates, and the reinforcing rib section 4, the keel section 5 and the end enclosure section 7 are all aluminum alloy sections; the mounting damping strip 12 is an ethylene propylene diene monomer foamed rubber strip; the load born by the metal sound barrier unit plate is attenuated when being transmitted to the H-shaped steel 8 upright post, so that the pulsation load is particularly effective, and the safety of the H-shaped steel 8 upright post is further improved.
Example 2
As shown in fig. 1, the damping distribution structure of the damping system of the damping type railway metal sound barrier of the present invention is schematically shown, wherein (i) is a damping structure among a punched panel, a back plate and a main beam profile; secondly, a damping structure between the sound barrier unit layers is formed; the damping structure between the sound barrier combination and the protective cover section bar; and fourthly, a damping structure between two sides of two ends of the sound barrier unit and the H-shaped steel for installation.
The invention discloses a damping railway metal sound barrier damping system, which mainly comprises: a damping structure I is arranged among the punching panel, the back plate and the main beam section bar at the top end of the metal sound barrier; damping structures II arranged among the metal sound barrier unit layers are 3 in number in the embodiment 1; the damping structure is arranged between the metal sound barrier combined unit plate and the protective cover sectional material; and the damping structure is arranged between two sides of two ends of the metal sound barrier unit and the H-shaped steel for installation.
As shown in fig. 2, it is a schematic view of the damping structure among the punched panel, the back plate and the main beam profile of the damping system of the damping railway metal sound barrier; the damping structure comprises a punching panel, a back plate and a main beam profile, wherein the damping structure comprises 1 an aluminum alloy main beam profile, 2 a punching panel, 3 a back plate, 4 a reinforcing rib profile, 5 a keel profile, 6 rock wool and 9 a load shedding damping strip.
The invention relates to a damping structure between a punched panel, a back plate and a main beam section bar of a damping system of a damping type railway metal sound barrier, which is a main functional structure and comprises the following components: the aluminum alloy main beam profile 1, the punching panel 2, the back plate 3, the reinforcing rib profiles 4 on two sides, the keel profile 5 and the rock wool 6 are respectively provided with two load shedding damping strips 9 on two sides. The two load-shedding damping strips 9 on one side are arranged between the punched panel 2 and the aluminum alloy main beam profile 1, the two load-shedding damping strips 9 on the other side are arranged between the back plate 3 and the aluminum alloy main beam profile 1, and the punched panel 2 and the back plate 3 between the two load-shedding damping strips 9 are in a suspension state; the reinforcing rib section bars 4 are respectively positioned at the inner sides of the punching panel 2 and the back plate 3; the keel section 5 is positioned between the reinforcing rib section 4 and the rock wool 6; the pulsating load is applied to the punching panel 2 and the back plate 3 and is transmitted to the load-reducing damping strip 9 which is contacted with the punching panel and the back plate, the load-reducing damping strip 9 deforms, the energy is absorbed and consumed in the process of deformation and then is transmitted to the aluminum alloy main beam section bar 1, so that the load borne by the main bearing structure is weakened, and the anti-fatigue life of the structure is further prolonged. The punching panel 2 and the back panel 3 are aluminum alloy plates, and the reinforcing rib section 4 and the keel section 5 are aluminum alloy sections; the load-reducing damping strip 9 is an ethylene propylene diene monomer foamed rubber strip.
FIG. 3 is a schematic view of a damping structure between metal sound barrier unit layers of the damping system of the damping railway metal sound barrier of the present invention; the second damping structure is a damping structure between metal sound barrier unit layers, and in the embodiment 1, 3 damping structures between metal sound barrier unit layers are arranged; wherein: 1 is aluminum alloy girder section bar, 2 is the panel that punches a hole, 3 is the backplate, 4 is the strengthening rib section bar, 5 is fossil fragments section bar, 6 is the rock wool, 10 is the damping strip between the layer.
The damping structure II between 3 metal sound barrier unit layers is arranged between the sound barrier unit layers which are longitudinally overlapped with each other, and the structure of the damping structure II between the layers is as follows: the steel plate comprises an aluminum alloy main beam section bar 1, a punching panel 2, a back plate 3, a reinforcing rib section bar 4, a keel section bar 5 and rock wool 6, wherein two sides of the aluminum alloy main beam section bar are respectively provided with an interlayer damping strip 10; the aluminum alloy main beam section 1 is provided with two symmetrical mounting grooves, the interlayer damping strips 10 are embedded in the mounting grooves of the aluminum alloy main beam section 1, and the reinforcing rib sections 4 are respectively positioned on the inner sides of the punching panel 2 and the back plate 3; the keel section 5 is positioned between the reinforcing rib section 4 and the rock wool 6; the punching panel 2 and the back panel 3 are aluminum alloy plates, and the reinforcing rib section 4 and the keel section 5 are aluminum alloy sections; the interlayer damping strip 10 is an ethylene propylene diene monomer foamed rubber strip; the interlayer damping structure can reduce the transmission and mutual rubbing of vibration between the sound barrier unit plates, reduce additional noise and prolong the collapse-resistant service life of the rock wool sound-absorbing material.
As shown in fig. 4, it is a schematic view of a damping structure between a metal sound barrier combined unit plate and a protective cover section bar of the damping system of the damping type railway metal sound barrier of the present invention; wherein: 1 is aluminum alloy girder section bar, 2 is the panel that punches a hole, 3 is the backplate, 4 is the strengthening rib section bar, 5 is the fossil fragments section bar, 6 is the rock wool, 11 is decoupling zero damping strip, 13 is decoupling zero damping strip upper shield.
The damping structure between the metal sound barrier combined unit plate and the protective cover section bar of the damping system of the damping type railway metal sound barrier is positioned at the lower part of the metal sound barrier combined unit plate, and the structure is as follows: the decoupling damping strip comprises an aluminum alloy main beam section bar 1, a punching panel 2, a back plate 3, a reinforcing rib section bar 4, a keel section bar 5 and rock wool 6, wherein the lower end of the aluminum alloy main beam section bar is provided with five decoupling damping strips 11, the decoupling damping strips 11 are positioned between an upper decoupling damping strip cover 13 and a protective cover section bar which are formed by the aluminum alloy section bar, the upper decoupling damping strip cover 13 is buckled with the protective cover section bar, and the upper decoupling damping strip cover 13 is integrally connected with the aluminum alloy main beam section bar 1; the reinforcing rib section bars 4 are respectively positioned at the inner sides of the punching panel 2 and the back plate 3; the keel section 5 is positioned between the reinforcing rib section 4 and the rock wool 6; the punching panel 2 and the back panel 3 are aluminum alloy plates, and the reinforcing rib section 4, the keel section 5, the decoupling damping strip upper cover 13 and the protective cover section are all aluminum alloy sections; the decoupling damping strip 11 is an ethylene propylene diene monomer foamed rubber strip.
The upper decoupling damping strip cover 13 is of an independent structure, and the upper decoupling damping strip cover 13 is connected with the aluminum alloy main beam profile through rivets or welding; the upper decoupling damping strip cover 13 is of an inverted-V-shaped structure, and comprises a cross rod and three vertical arms, wherein the three vertical arms are respectively provided with a socket with a downward opening, and small arms protruding out of the sockets at two sides of the combined upper cover profile are provided with fasteners for fastening the protective cover profile. The protective cover section bar is of a W-shaped structure and is provided with five grooves, the middle three grooves correspond to the bearing slots with the downward openings of the independent upper cover section bars or the combined upper cover section bars, the outer edges of the middle three grooves are provided with upward protruding fasteners, and the two grooves at the two ends correspond to the bearing slots with the downward openings of the main beam section bars. The inner sides of the two ends of the aluminum alloy main beam section bar 1 are respectively provided with a socket slot with a downward opening.
When the damping structure is used, the damping structure between the metal sound barrier combined unit plate and the bearing surface is positioned at the lower part of the metal sound barrier combined unit plate to form a good vibration isolation effect, namely, the coupling transmission of weakening vibration is released.
The protective cover section bar is contacted with the bearing surface; it is recommended to level the bearing surface and clean it before installation, and then apply a construction sealant, such as glass cement, to the corresponding location to fix the protective cover profile 4 to the bearing surface.
As shown in fig. 5, it is a schematic view of a damping structure between two sides of a metal sound barrier unit and H-shaped steel for installation of the damping system of the damping type railway metal sound barrier of the present invention; the damping structures between the two sides of the two ends of the metal sound barrier unit and the H-shaped steel for installation are positioned at the two ends of the metal sound barrier unit; the structure is as follows: 2, a punching panel, 3, a back plate, 4, a reinforcing rib profile, 5, a keel profile, 6, rock wool, 7, an end enclosure profile, 8, H-shaped steel and 12, wherein the end enclosure profile is provided with a damping strip; the metal sound barrier unit is characterized in that end socket sectional materials 7 are arranged on two sides of two ends of the metal sound barrier unit, mounting grooves are formed in the end socket sectional materials 7, damping strips 12 are embedded in the mounting grooves, and the mounting damping strips 12 are located between the end socket sectional materials 7 and the H-shaped steel 8 to form a damping structure; the punching panel 2 is welded with the reinforcing rib profile 4, the back plate 3 is welded with the reinforcing rib profile 4, and the end socket profile 7 is fastened with the keel profile; the punching panel 2 and the back panel 3 are aluminum alloy plates, and the reinforcing rib section 4, the keel section 5 and the end enclosure section 7 are all aluminum alloy sections; the mounting damping strips 12 are ethylene propylene diene monomer foamed rubber strips; the load born by the metal sound barrier unit plate is attenuated when being transmitted to the H-shaped steel 8 upright post, so that the pulsation load is particularly effective, and the safety of the H-shaped steel 8 upright post is further improved.
The damping system of the damping type railway metal sound barrier is characterized in that energy is dissipated by utilizing the damping characteristic of an elastic material, the metal sound barrier unit plate is of a plate-frame structure, an elastic damping material is arranged among a panel, a back plate and a frame (main beam profile), and the elastic damping material is arranged on the upper lapping side and the lower lapping side of the two plates and on the two sides of the two ends of the plate body, so that multiple damping effects are realized, and the load peak of pulsating force generated when a train passes through at a high speed on a rigid upright post is remarkably reduced.
The elastic damping material used in the damping system of the damping railway metal sound barrier is an ethylene propylene diene monomer foamed rubber strip with excellent weather resistance.
Claims (7)
1. Damping formula railway metal sound barrier's damping system, its characterized in that: the damping structure is positioned between the punching panel, the back plate and the main beam section bar of the metal sound barrier unit plate, between the metal sound barrier unit layers, between the metal sound barrier combined unit plate and the protective cover section bar, and between two ends of the metal sound barrier unit and the H-shaped steel for installation; the damping structure positioned among the punched panel, the back plate and the main beam profile of the metal sound barrier unit plate mainly comprises the punched panel, the back plate, an elastic damping material and the main beam profile, wherein the elastic damping material is positioned between the punched panel and the main beam profile or between the back plate and the main beam profile; the damping structure positioned between the metal sound barrier unit layers mainly comprises elastic damping materials embedded in a main beam section bar mounting groove; the damping structure between the metal sound barrier combined unit plate and the protective cover sectional material mainly comprises an elastic damping material arranged on an upper cover of the decoupling damping strip; the damping structure between the two sides of the two ends of the metal sound barrier unit and the installation H-shaped steel mainly comprises an elastic damping material embedded on the end socket section; the elastic damping material is an ethylene propylene diene monomer foamed rubber strip; the damping structure among the punched panel, the back plate and the main beam section bar of the metal sound barrier unit plate is as follows: the device comprises a main beam profile, a punching panel, a back plate, a reinforcing bar profile, a keel profile and rock wool, wherein two load shedding damping strips are respectively arranged on two sides of the main beam profile, the two load shedding damping strips on one side are arranged between the punching panel and the main beam profile, the two load shedding damping strips on the other side are arranged between the back plate and the main beam profile, and the punching panel and the back plate between the two load shedding damping strips are in a suspension state; the reinforcing rib profiles are respectively positioned on the inner sides of the punching panel and the back plate; the keel section is positioned between the reinforcing rib section and the rock wool.
2. The damping system of a damped railway metallic sound barrier of claim 1, wherein: the specific structure of the damping structure positioned between the metal sound barrier unit layers is as follows: the composite material comprises a main beam section, a punching panel, a back plate, a reinforcing bar section, a keel section and rock wool, wherein two sides of the main beam section are respectively provided with an interlayer damping strip; the main beam section is provided with two symmetrical mounting grooves, the interlayer damping strips are embedded in the mounting grooves of the main beam section, and the reinforcing rib section is respectively positioned on the inner sides of the punching panel and the back plate; the keel section is positioned between the reinforcing rib section and the rock wool.
3. The damped railway metal sound barrier damping system of claim 2, wherein: the specific structure of the damping structure between the metal sound barrier combined unit plate and the protective cover sectional material is as follows: the decoupling damping strip upper cover is buckled with the protective cover profile, and is connected with the main beam profile; the reinforcing rib profiles are respectively positioned on the inner sides of the punching panel and the back plate; the keel section is positioned between the reinforcing rib section and the rock wool.
4. The damped railway metal sound barrier damping system of claim 3, wherein: the damping structure between the two sides of the two ends of the metal sound barrier unit and the H-shaped steel for installation is specifically structured as follows: the steel plate comprises a punching panel, a back plate, a reinforcing rib profile, a keel profile, rock wool, a head sealing profile, H-shaped steel and a mounting damping strip; end socket sectional materials are arranged on two sides of two ends of the metal sound barrier unit, an installation groove is formed in each end socket sectional material, a damping strip is embedded in each installation groove, and each installation damping strip is located between each end socket sectional material and the corresponding H-shaped steel to form a damping structure; the punching face plate is welded with the reinforcing rib profile, the back plate is welded with the reinforcing rib profile, and the end socket profile is fastened with the keel profile.
5. The damped railway metallic sound barrier damping system of any one of claims 1 to 4, wherein: the punching panel and the back plate are aluminum alloy plates.
6. The damped railway metal sound barrier damping system of claim 5, wherein: the main beam section, the reinforcing rib section, the keel section, the end socket section, the protective cover section or the upper cover of the decoupling damping strip are all aluminum alloy sections.
7. The damped railway metallic sound barrier damping system of any one of claims 1 to 4, wherein: the load-shedding damping strip, the interlayer damping strip, the decoupling damping strip or the mounting damping strip are all ethylene propylene diene monomer foamed rubber strips.
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| CN108797407B (en) * | 2018-06-13 | 2023-08-18 | 中国铁路设计集团有限公司 | Railway sound barrier composite material unit plate |
| CN110172933A (en) * | 2019-05-29 | 2019-08-27 | 上海五元工程科技有限公司 | A kind of metallic sound barrier unit board using deckle board fastening structure |
| CN110396950A (en) * | 2019-06-17 | 2019-11-01 | 中国铁道科学研究院集团有限公司节能环保劳卫研究所 | A kind of penetrating sound insulationg board of railway sound barrier |
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