CN217078497U - Double-layer dislocation porous sound barrier device with active tuning wind load function - Google Patents
Double-layer dislocation porous sound barrier device with active tuning wind load function Download PDFInfo
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- CN217078497U CN217078497U CN202220883556.XU CN202220883556U CN217078497U CN 217078497 U CN217078497 U CN 217078497U CN 202220883556 U CN202220883556 U CN 202220883556U CN 217078497 U CN217078497 U CN 217078497U
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Abstract
The utility model relates to a porous formula sound barrier device of double-deck dislocation with harmonious wind load function of initiative belongs to bridge anti-wind and subtracts wind pressure field. The device comprises a sound barrier horizontal support, a horizontal steel cantilever beam, a sound barrier foundation, a steel upright post shaped like a Chinese character 'wang', an anti-collision rubber pad, a wind speed sensor, an electric telescopic rod, a sound absorption material plate, a steel baffle plate and an intelligent switch; a sound barrier foundation is arranged on the horizontal steel cantilever beam; two steel columns shaped like Chinese character 'wang' are arranged on the basis of the sound barrier on each side; a sound absorption material plate is arranged between the two steel columns in the shape of the Chinese character 'wang', a steel baffle plate is also arranged on the steel column in the shape of the Chinese character 'wang', and the top surface of the steel baffle plate supports the sound absorption material plate; the electric telescopic rod is fixed on the inner side groove of the steel column in the shape of Chinese character 'wang'; the wind speed sensor and the intelligent switch are fixed on the basis of a sound barrier between the two steel columns shaped like a Chinese character 'wang'; the sound absorption material plate is provided with a plurality of rows of round holes arranged at intervals or the combination of the round holes and the semicircular holes.
Description
Technical Field
The utility model relates to a porous formula sound barrier device of double-deck dislocation that is used for heavy haul railway to have harmonious wind load function of initiative belongs to bridge anti-wind and subtracts wind pressure field.
Background
With the continuous development of society, the traffic volume of China is increased rapidly, and the number of railway bridges is increased day by day. While railways are rapidly developing, citizen habitats sometimes have to be crossed. It also brings about a serious noise pollution problem. The sound barrier is an important facility for reducing noise pollution of railways, can effectively reduce the noise influence on the surrounding environment when a train passes through, and is widely applied along railways at present.
The traditional sound barrier is often designed only by considering noise reduction and is connected to a main beam flange to form a large cantilever structure. Meanwhile, the wind barrier can transmit gravity and wind load borne by the wind barrier and aerodynamic force generated when a train passes through the wind barrier to the flange of the main beam, and the wind resistance safety of the railway bridge structure is seriously threatened. Secondly, the height of the bridge relative to the ground is large, the wind speed at the bridge deck is large, the wind resistance requirement on the sound barrier on the bridge is increased, and the safety of driving on the bridge is influenced. Especially in areas with large wind pressure, the sound barrier is often unstable and even overturns. And the breakdown of traffic after the emergency repair also causes the waste of a large amount of manpower, material resources and financial resources. Therefore, the reasonable determination of the windproof design standard and the arrangement of matched safety facilities are urgent and necessary, and have important practical significance. The utility model relates to a porous formula sound barrier device of double-deck dislocation that is used for heavy haul railway to have active tuning wind load function can reduce the windward area as far as possible when bearing great wind pressure under the prerequisite that its noise reduction effect does not reduce, reduces the wind-load, more is favorable to bridge and protective screen self structure safety.
SUMMERY OF THE UTILITY MODEL
Based on the above defect, the utility model provides a porous formula sound barrier device of double-deck dislocation with harmonious wind load function of initiative for heavy haul railway for the solution improves the antidumping ability of sound barrier in high wind pressure area, prolongs its life, prevention traffic accident problem.
In order to solve the technical problem, the utility model discloses following technical scheme has been taken:
a double-layer staggered porous sound barrier device with an active wind load tuning function is used for heavy haul railways, and is arranged on two sides of a railway bridge track and comprises a sound barrier horizontal support, a horizontal steel cantilever beam, a sound barrier foundation, a steel upright post in a shape like the Chinese character 'wang', an anti-collision rubber pad, a wind speed sensor, an electric telescopic rod, a sound absorption material plate, a steel baffle plate and an intelligent switch; the sound barrier horizontal support and the horizontal steel cantilever beam are connected to the main beam, and the sound barrier horizontal support (21) and the horizontal steel cantilever beam (20) are connected into a whole through a bolt; a sound barrier foundation is arranged on the horizontal steel cantilever beam; two steel columns shaped like Chinese character 'wang' are arranged on the basis of the sound barrier on each side; a sound absorption material plate is arranged between the two steel columns in the shape of Chinese character 'wang', the sound absorption material plate is divided into an inner layer and an outer layer, and the inner layer and the outer layer are respectively arranged in grooves on the inner side and the outer side of the steel columns in the shape of Chinese character 'wang'; the sound absorption material plates on each layer are multiple, and a stainless steel frame is embedded in each sound absorption material plate; an anti-collision rubber pad is arranged below each sound absorption material plate; the steel baffle is arranged on the steel upright post in the shape of Chinese character 'wang', the bottom of the steel baffle is at a certain distance from the foundation of the sound barrier, and the top surface of the steel baffle supports the sound absorption material plate; the electric telescopic rod is fixed on the inner side groove of the steel upright post in the shape of Chinese character 'wang' and is used for controlling the lifting of the sound absorption material plate of the inner layer; the upper part of the electric telescopic rod is contacted with the anti-collision rubber pad at the bottom of the inner sound absorption material plate; and the wind speed sensor and the intelligent switch are fixed on the basis of the sound barrier between the two steel columns shaped like a Chinese character 'wang'.
Further, the steel baffle is fixed on the steel column in the shape of a Chinese character 'wang' through a bolt group and is 10cm away from the sound barrier foundation. The sound barrier device also comprises a sound barrier inclined support and L-shaped steel; two ends of the lower sound barrier diagonal brace are welded with the horizontal steel cantilever beam, and two ends of the upper sound barrier diagonal brace are respectively welded with the horizontal steel cantilever beam and the L-shaped steel; and pre-stressed reinforcement pore passages are reserved on flanges on two sides of the main beam and the L-shaped steel, pre-stressed reinforcements are installed, and the main beam is anchored through pre-stressed anchor cables after being tensioned.
Furthermore, the sound barrier is a double-layer sound absorption material plate, and the weight of the sound barrier is larger, so that a reinforcing measure is provided.
Further, the top end of the steel column shaped like a Chinese character 'wang' is provided with a rubber column cap.
Furthermore, mounting holes are reserved in corresponding positions of the left side and the right side of the steel upright post in the direction of the bridge, and the inner surface of the steel upright post is coated with a polytetrafluoroethylene layer so as to reduce the frictional resistance between the sound absorption material plate and the steel upright post; the height of the steel column is 2.5m, the section length is 30cm, the width is 25cm, the web thickness is 3cm, the flange thickness is 1cm, and the steel column is fixed on the sound barrier foundation through foundation bolts.
Furthermore, the steel baffle is square, the thickness is 1cm, the internal dimension is determined by the dimension of the steel column in the shape of Chinese character 'wang', and the steel baffle is fixed on the steel column in the shape of Chinese character 'wang' by a bolt group.
Further, the power supply is pre-embedded in the sound barrier foundation; the electric telescopic rod is connected with the wind speed sensor and the intelligent switch which are arranged on the basis of the sound barrier in series and is connected with a power supply through an electric wire.
Furthermore, a plurality of rows of round holes or the combination of the round holes and the semicircular holes are arranged at intervals on the sound absorption material plate.
Further, the power supply is alternating current; the wire is characterized in that the outer side of a copper wire is wrapped with a wear-resistant and corrosion-resistant rubber; the steel upright posts, the stainless steel frame, the electric telescopic rod and the steel baffle are all made of stainless steel.
Furthermore, the inner layer and the outer layer of the sound absorption material plates are arranged in three rows, and each sound absorption material plate is 2m long, 80cm wide and 10cm thick; wherein, part of the sound absorption material plate is provided with two rows of round holes which are spaced by 20cm from top to bottom, each row is provided with 7 round holes, the aperture of the round hole is 20cm, the distance between the centers of two adjacent round holes is 25cm, and the two rows of round holes are respectively spaced by 10cm from the upper edge and the lower edge of the sound absorption material plate and are spaced by 30cm from the left edge and the right edge of the sound absorption material plate; another part sound absorbing material board then comprises one row of round hole and one row of semicircle orifice, including the topmost sound absorbing material board of outer bottom sound absorbing material board and inlayer, wherein, the semicircle orifice on the outer bottom sound absorbing material board is in the round hole lower part, and the semicircle orifice on the topmost sound absorbing material board of inlayer is on round hole upper portion.
Further, the sound-absorbing material panels are each made of a centrifugal glass wool felt.
Compared with the prior art, the utility model discloses following technological effect has:
adopt the produced beneficial effect of above-mentioned technical scheme to lie in: when the wind speed sensor arranged on the foundation detects that the wind speed exceeds the limit value, the intelligent switch is switched on, and the electric telescopic rod is controlled to shorten the corresponding length and drive the inner side sound absorption material plate to move to the corresponding position. When the sound absorption material plate moves to the position of the steel baffle plate, the pore channels of the inner and outer double-layer sound absorption material plates are completely overlapped at the moment, the windward area of the sound barrier device is greatly reduced, the wind load borne by the structure is also reduced, the probability that the structure is damaged and overturned due to overlarge wind pressure is further reduced, and the stability of the structure is greatly improved. The utility model discloses gradable reduces windward area gradually, when reducing the wind pressure according to actual conditions, partial sound barrier still can continue work. When the wind speed sensor detects that the wind speed is lower than the limit value, the power supply is switched on, the electric telescopic rod extends to drive the inner side sound-absorbing material plate to move for a distance of one aperture, at the moment, the circular holes of the inner and outer sound-absorbing material plates are just completely staggered, and the pore channel is in a completely closed state. The sound barrier continues to work, reducing noise. The sound absorption material plate is embedded in the stainless steel frame, and the stainless steel frame plays a role in protecting the material plate and can prolong the service life of the sound absorption material plate.
Drawings
Fig. 1 is a front view of a double-layered staggered porous sound barrier device with active wind load tuning function according to the present invention;
fig. 2 is a top view of the double-layered staggered porous sound barrier device with active wind load tuning function according to the present invention;
fig. 3 is a side view of a double-layered staggered porous sound barrier device with active wind load tuning function according to the present invention;
fig. 4 is a structural diagram of the double sound barrier of the present invention;
FIG. 5 is a working front view of the double-layer sound barrier of the present invention when the wind speed is high;
FIG. 6 is a side view of the double sound barrier when the wind speed is high;
FIG. 7 is a side view of the device in partial configuration for normal operation;
fig. 8 is a partial structural schematic view of a double-layer staggered porous sound barrier device with active wind load tuning function according to the present invention;
in the figure: 1. 2, 3, 26, 27, 28-panels of sound-absorbing material; 4. 10-a steel baffle; 5. 9-an electric telescopic rod; 6-a wind speed sensor; 7. 8-steel column shaped like Chinese character 'wang'; 11-bolt group one; 12-anti-collision rubber cushion; 13-stainless steel frame; 14-a polytetrafluoroethylene layer; 15-an electrical wire; 16-bolt group two; 17-bolt group III; 18-bolt group four; 19-sound barrier foundation; 20-horizontal steel outriggers; 21-horizontal support of the sound barrier; 22-sound barrier diagonal bracing; 23-a main beam; 24-rubber cap; 25-a power supply; 29-intelligent switch; 30-a steel plate; 31-ballast; 32-L section steel; 33-sleeper; 34-prestressed reinforcement; 35-prestressed anchorage cable.
Detailed Description
The following description of the present invention will be made in detail with reference to the accompanying drawings 1 to 7.
As shown in fig. 1-7, a double-layer staggered porous sound barrier device with an active wind load tuning function is used for heavy haul railways, and the sound barrier device is arranged on two sides of a railway bridge track and comprises a sound barrier inclined support 22, a sound barrier horizontal support 21, a horizontal steel cantilever beam 20, a sound barrier foundation 19, steel columns 7 and 8 in a shape like the Chinese character 'wang', a rubber bumper pad 12, a wind speed sensor 6, an electric telescopic rod 5 and 9, sound absorption material plates 1, 2, 3, 26, 27 and 28, steel baffles 4 and 10 and an intelligent switch 29. The sound barrier horizontal support 21, the horizontal steel cantilever beam 20 and the L-shaped steel 32 are connected to the main beam 23 through bolts, and a sound barrier inclined support 22 is further arranged on the outer side of the horizontal steel cantilever beam 20. Prestressed reinforcements 34 are respectively anchored between the L-shaped steel 32 at two sides of the track and two side flanges of the main beam through prestressed anchor cables 35. A sound barrier foundation 19 is arranged on the horizontal steel outrigger 20.
Two steel columns 7 and 8 in the shape of Chinese character 'wang' are arranged on the sound barrier foundation 19 at each side. Rubber cap 24 is arranged on the top of the steel upright posts 7 and 8. Mounting holes are reserved at corresponding positions of the left side and the right side of the king-shaped steel upright posts 7 and 8 in the direction of the bridge, and polytetrafluoroethylene layers 14 are coated on the inner surfaces of the mounting holes to reduce the frictional resistance between the sound absorption material plates 1, 2, 3, 26, 27 and 28 and the king-shaped steel upright posts 7 and 8. The height of the steel columns 7 and 8 is 2.5m, the section length is 30cm, the width is 25cm, the web thickness is 3cm, the flange thickness is 1cm, and the steel columns are fixed on the sound barrier foundation 19 through foundation bolts. The sound absorption material plates 1, 2, 3, 26, 27 and 28 are arranged between the two steel columns 7 and 8, and the sound absorption material plates 1, 2, 3, 26, 27 and 28 are arranged in an inner layer and an outer layer and are respectively arranged in grooves on the inner side and the outer side of the steel columns 7 and 8. Each layer of the sound absorption material plates 1, 2, 3, 26, 27 and 28 is a plurality of blocks, and each sound absorption material plate 1, 2, 3, 26, 27 and 28 is inlaid with a stainless steel frame 13. And an anti-collision rubber pad 12 is arranged below each sound absorption material plate. The sound absorption material plates are made of centrifugal glass wool felt or similar acoustic fillers and other sound insulation materials in a composite mode. Steel baffle plates 4 and 10 are further arranged on the steel columns 7 and 8, and the top surfaces of the steel baffle plates 4 and 10 at certain positions away from the sound barrier foundation 19 support the sound absorption material plates 1, 2, 3, 26, 27 and 28. The steel baffles 4 and 10 are fixed on the steel columns 7 and 8 through bolt groups and are 10cm away from the sound barrier foundation 19. The steel baffle plates 4 and 10 are square, the thickness is 1cm, the internal dimension is determined by the dimension of the steel columns 7 and 8, and the steel baffle plates are fixed on the steel columns 7 and 8 by bolt groups. The steel baffle is a limiting device of the sound absorption material plate and is used for limiting the vertical displacement of the sound absorption material plate. The electric telescopic rods 5 and 9 are fixed on the inner side grooves of the steel columns 7 and 8 and used for controlling the lifting of the sound absorption material plate of the inner layer. The upper parts of the electric telescopic rods 5 and 9 are contacted with an anti-collision rubber pad 12 at the bottom of the inner sound absorption material plate. The wind speed sensor 6 and the intelligent switch 29 are fixed on the sound barrier foundation 19 between the two steel columns 7 and 8.
The power supply 25 is pre-buried in the sound barrier foundation 19. The power supply 25 is alternating current. The wire 15 is a rubber coated with wear-resistant and corrosion-resistant copper wires. The wang-shaped steel upright posts 7 and 8, the stainless steel frame 13, the electric telescopic rods 5 and 9 and the steel baffle plates 4 and 10 are made of stainless steel, and the surfaces of the steel upright posts are subjected to anti-corrosion treatment, so that the durability of the structure is improved. The electric telescopic rods 5 and 9 are connected with the wind speed sensor 6 and the intelligent switch 29 which are arranged on the sound barrier foundation 19 in series, and are connected with the power supply 25 through the electric wires 15. The sound absorption material plates 1, 2, 3, 26, 27 and 28 are provided with a plurality of rows of round holes arranged at intervals or a combination of the round holes and the semi-round holes.
In this embodiment, the inner and outer sound-absorbing material plates 1, 2, 3, 26, 27, and 28 are arranged in three rows, and each of the sound-absorbing material plates 1, 2, 3, 26, 27, and 28 has a length of 2m, a width of 80cm, and a thickness of 10 cm. Wherein, part sound absorption material board 1, 2, 27, 28 have two rows of 20 cm's round hole from top to bottom interval, and every row has 7 round holes, and the round hole aperture is 20cm, and the distance between two adjacent round hole centres is 25cm, and two rows of round holes are 10cm with the upper and lower edge interval of sound absorption material board respectively, and the edge interval 30cm about the sound absorption material board. The other part of the sound-absorbing material plates 3 and 26 are formed by a row of round holes and a row of semicircular holes, and comprise the outer bottom sound-absorbing material plate 3 and the inner top sound-absorbing material plate 26, wherein the semicircular holes in the outer bottom sound-absorbing material plate 3 are arranged at the lower part of the round holes, and the semicircular holes in the inner top sound-absorbing material plate 26 are arranged at the upper part of the round holes.
In this embodiment, the offset distance between the inner and outer sound-absorbing material plates and the row distance between the upper and lower openings can be determined according to the aperture of the opening on the sound-absorbing material plate. In addition, the calculation formula of the wind pressure borne by the sound barrier is as follows:
wherein P is wind pressure, kN/m 2 (ii) a v is wind speed, m/s.
When the round hole of two-layer sound absorbing material board inside and outside was completely coincided, the pore area accounted for the total area of sound barrier and is about 40%, promptly the utility model discloses the biggest wind pressure that reduces 40%. The size of the pore canal can be adjusted according to the actual situation, and the degree of reducing the wind pressure can be changed.
The utility model discloses a porous formula sound barrier device of double-deck dislocation that is used for heavy haul railway's having active tuning wind load function, during its concrete construction, pass through bolted connection on girder 23 including sound barrier horizontal support 21, horizontal steel outrigger 20, L shaped steel 32. The horizontal support 21 of the sound barrier and the horizontal steel cantilever beam 20 are connected into a whole through a bolt. Two ends of the lower sound barrier diagonal brace 22 are welded with the horizontal steel cantilever beam 20, and two ends of the upper sound barrier diagonal brace 22 are respectively welded with the horizontal steel cantilever beam 20 and the L-shaped steel 32. And reserving prestressed reinforcement 34 pore channels on flanges at two sides of the main beam and the L-shaped steel 32, installing the prestressed reinforcement 34, and anchoring through a prestressed anchor cable 35 after tensioning. And paving railway ballasts 31 on the main beams 23 and placing sleepers 33. The sound barrier foundation 19 is arranged on the horizontal steel cantilever beam 20, the steel plate 30 and the bolt group I11 are embedded, the bolt group I11 on the surface of the sound barrier foundation 19 is cleaned by a construction tool, concrete stuck to the embedded steel plate is cleaned, and the sound barrier foundation is tightly connected with the nut during installation. Meanwhile, if the bolt group I11 has deformation, bending and the like, correction is needed in advance. After cleaning, the nuts are installed, the process is simple, but the leveling treatment of a plurality of nuts is carried out by a engineering level ruler, so that the uniform stress at a horizontal position when the stand column is installed later is ensured. Mounting holes are reserved in corresponding positions of the left side and the right side of the bridge along the direction of the king-shaped steel upright post 7 and the king-shaped steel upright post 8, and polytetrafluoroethylene layers 14 are coated on the inner surfaces of the mounting holes. Then, hoisting personnel and ground personnel are required to put the steel columns 7 and 8 into the cleaned 19-face position of the sound barrier foundation in a matching mode by using corresponding special hoisting tools for engineering, nuts are tightened after all the steel columns are placed in place, corresponding horizontal adjustment is required to be carried out according to the steel columns 7 and 8 in the process, and the verticality of the steel columns is measured. The steel upright post 7 and the steel upright post 8 are fixed on the sound barrier foundation 19 through a first bolt group 11. After all are fixed, the joints need to be poured and fixed, and the firmness of the steel columns 7 and 8 is ensured. The mortar is treated by prepared mortar, the mortar meeting the specification requirement is poured into a reserved groove 19 of the sound barrier foundation, the bases of the steel columns 7 and 8 and the concrete foundation are fully filled, and the surface is ground and flattened. The steel baffle 4 and the steel baffle 10 are respectively fixed on the steel upright post 7 and the steel upright post 8 in a position 1910cm away from the sound barrier foundation through a bolt group III 17. The electric telescopic rod 5 and the electric telescopic rod 9 are respectively fixed on the inner side grooves of the steel upright post 7 and the steel upright post 8 through the bolt group four 18. The wind speed sensor 6 and the intelligent switch 29 are fixed on the sound barrier foundation 19 through the bolt group two 16. The power supply 25 is pre-buried in the sound barrier foundation 19. The electric telescopic rods 5 and 9 are connected with the wind speed sensor 6 and the intelligent switch 29 which are arranged on the sound barrier foundation 19 in series, and are connected with the power supply 25 through the electric wires 15. The panel of sound-absorbing material 1, the panel of sound-absorbing material 2 and the panel of sound-absorbing material 3 are embedded in a stainless steel frame 13. The sound absorption material plate 3, the sound absorption material plate 2, the sound absorption material plate 3 and three anti-collision rubber pads 12 are inserted into the outer side grooves of the steel upright post 7 and the steel upright post 8. Similarly, the sound absorption material plate 28, the sound absorption material plate 27, the sound absorption material plate 26 and the three crash rubber pads 12 are inserted into the inner side grooves of the steel columns 7 and 8 in sequence. Wherein the crash rubber pads 12 below the sound-absorbing material plate 28 are in contact with the upper portions of the electric telescopic rod 5 and the electric telescopic rod 9. The rubber column cap 24 is placed at the top ends of the steel columns 7 and 8. The number, specification, spacing and the like of the bolts are determined according to the anti-overturning calculation.
The specific control process is as follows: when the electric telescopic rod works normally, the electric telescopic rod 5 and the electric telescopic rod 9 are in the longest state, the outer side sound barrier is integrally higher than the inner side sound barrier by 20cm, namely the diameter of the round hole, and the hole channel is just staggered and is completely closed. When the wind speed sensor 6 on the sound barrier foundation 19 detects that the wind speed exceeds 5m/s, namely 4-level wind limit value, the intelligent switch 29 is powered on, the electric telescopic rod 5 and the electric telescopic rod 9 are controlled to be shortened by 5cm and then powered off, the sound absorption material plate 28, the sound absorption material plate 27, the sound absorption material plate 26 and the anti-collision rubber pad 12 stop after moving downwards by 5cm along with the electric telescopic rod 5 and the electric telescopic rod 9 under the action of gravity, and at the moment, the circular hole parts of the inner layer of sound absorption material plate and the circular hole parts of the outer layer of sound absorption material plate coincide. When the wind speed sensor 6 detects that the wind speed exceeds 14m/s, namely 7-level wind limit value, the intelligent switch 29 is switched on, the electric telescopic rod 5 and the electric telescopic rod 9 are controlled to be shortened by 5cm again, then the power supply is switched off, and at the moment, the overlapped part of the circular holes of the inner layer of sound absorption material plate and the circular hole of the outer layer of sound absorption material plate are enlarged. When the wind speed sensor 6 detects that the wind speed exceeds 20m/s, namely 9-level wind limit value, the intelligent switch 29 is connected with a power supply, so that the electric telescopic rod 5 and the electric telescopic rod 9 are shortened by 10cm again until the steel baffle plate 4 and the steel baffle plate 10 are fixed. At the moment, as shown in fig. 5-6, the circular holes of the inner and outer sound-absorbing material plates are all overlapped, the pore channel is in an open-close state, and the whole height of the sound barrier is reduced. The windward area of the structure is greatly reduced, so that the wind load borne by the structure is also reduced, the probability of damage and overturning of the structure due to overlarge wind pressure is further reduced, and the stability of the structure is greatly improved.
In a similar way, when the wind speed sensor 6 detects that the wind speed is lower than each limit value, the intelligent switch 29 is powered on, the electric telescopic rod 5 and the electric telescopic rod 9 are controlled to extend for corresponding lengths, the inner sound-absorbing material plate is jacked up, and the sound-absorbing material plate 28, the sound-absorbing material plate 27, the sound-absorbing material plate 26 and the anti-collision rubber pad 12 are driven to move upwards. When the sound-absorbing plates move for 20cm together, the circular holes of the inner and outer sound-absorbing plates are just completely staggered as shown in figures 1-3, the pore channels are in a closed state, and the sound barrier continues to work to reduce noise. The stainless steel frame 13 protects the material plate and prolongs the service life of the material plate. In actual engineering, the dislocation distance of the inner and outer sound barriers and the upper and lower row distances of the openings are determined according to the aperture of the openings.
The utility model discloses at the installation, stainless steel frame and sound absorbing material board size can be adjusted and modify according to concrete actual conditions, and sound absorbing material board and king's font steel stand interlock position need set up certain clearance, specifically confirm according to service environment and seasonal temperature variation.
The above-mentioned embodiments are only given for the purpose of more clearly illustrating the technical solutions of the present invention, and are not intended to limit the present invention, and the modifications of the technical solutions of the present invention by those skilled in the art based on the common general knowledge in the field are also within the scope of the present invention.
Claims (10)
1. The utility model provides a porous formula sound barrier device of double-deck dislocation with harmonious wind load function of initiative for heavy haul railway, the sound barrier device is arranged in railway bridge track both sides, its characterized in that: the device comprises a sound barrier horizontal support (21), a horizontal steel cantilever beam (20), a sound barrier foundation (19), a steel upright post (7, 8) in a shape like Chinese character 'wang', an anti-collision rubber pad (12), a wind speed sensor (6), an electric telescopic rod (5, 9), a sound absorption material plate (1, 2, 3, 26, 27, 28), a steel baffle plate (4, 10) and an intelligent switch (29); the sound barrier horizontal support (21) and the horizontal steel cantilever beam (20) are connected to the main beam (23), and the sound barrier horizontal support (21) and the horizontal steel cantilever beam (20) are connected into a whole through a bolt; a sound barrier foundation (19) is arranged on the horizontal steel cantilever beam (20); two steel columns (7, 8) in the shape of Chinese character 'wang' are arranged on the sound barrier foundation (19) on each side; sound absorption material plates (1, 2, 3, 26, 27 and 28) are arranged between the two steel columns (7 and 8), the sound absorption material plates (1, 2, 3, 26, 27 and 28) are divided into an inner layer and an outer layer, and the inner layer and the outer layer are respectively arranged in grooves on the inner side and the outer side of the steel columns (7 and 8); each layer of sound absorption material plates (1, 2, 3, 26, 27, 28) are multiple, and each sound absorption material plate (1, 2, 3, 26, 27, 28) is embedded with a stainless steel frame (13); an anti-collision rubber pad (12) is arranged below each sound absorption material plate; steel baffle plates (4, 10) are further arranged on the steel columns (7, 8) in the shape of the Chinese character 'wang', the top surfaces of the steel baffle plates (4, 10) support the sound absorption material plates (1, 2, 3, 26, 27, 28) at certain positions away from the sound barrier foundation (19); the electric telescopic rods (5, 9) are fixed on the grooves on the inner sides of the steel columns (7, 8) and are used for controlling the lifting of the sound absorption material plate on the inner layer; the upper parts of the electric telescopic rods (5 and 9) are contacted with an anti-collision rubber pad (12) at the bottom of the inner sound absorption material plate; the wind speed sensor (6) and the intelligent switch (29) are fixed on a sound barrier foundation (19) between the two steel columns (7, 8).
2. The double-layer staggered porous sound barrier device with the function of actively tuning wind load according to claim 1, wherein: the steel baffles (4 and 10) are fixed on the steel columns (7 and 8) in the shape of the Chinese character 'wang' through bolt groups and are 10cm away from the sound barrier foundation (19); the sound barrier device also comprises a sound barrier inclined support (22) and an L-shaped steel (32); two ends of the lower sound barrier diagonal brace (22) are welded with the horizontal steel cantilever beam (20), and two ends of the upper sound barrier diagonal brace (22) are respectively welded with the horizontal steel cantilever beam (20) and the L-shaped steel (32); and pre-stressed steel bar (34) hole channels are reserved on flanges on two sides of the main beam and the L-shaped steel (32), the pre-stressed steel bars (34) are installed, and the pre-stressed steel bars are anchored through pre-stressed anchor cables (35) after being tensioned.
3. The double-layer staggered porous sound barrier device with the function of actively tuning wind load according to claim 1, wherein: rubber column caps (24) are arranged at the top ends of the steel columns (7, 8).
4. The double-layer staggered porous sound barrier device with the function of actively tuning wind load according to claim 1, wherein: mounting holes are reserved in corresponding positions of the left and right sides of the king-shaped steel upright columns (7, 8) along the bridge direction, and polytetrafluoroethylene layers (14) are coated on the inner surfaces of the king-shaped steel upright columns to reduce the frictional resistance between the sound absorption material plates (1, 2, 3, 26, 27 and 28) and the king-shaped steel upright columns (7 and 8); the height of the steel columns (7 and 8) is 2.5m, the length of the section is 30cm, the width of the steel columns is 25cm, the thickness of a web plate is 3cm, the thickness of a flange is 1cm, and the steel columns are fixed on a sound barrier foundation (19) through foundation bolts.
5. The double-layer staggered porous sound barrier device with the function of actively tuning wind load according to claim 1, wherein: the steel baffle plates (4 and 10) are square, the thickness of the steel baffle plates is 1cm, the internal size of the steel baffle plates is determined by the size of the steel columns (7 and 8) in the shape of the Chinese character 'wang', and the steel baffle plates are fixed on the steel columns (7 and 8) in the shape of the Chinese character 'wang' through bolt groups.
6. The double-layer staggered porous sound barrier device with the function of actively tuning wind load according to claim 1, wherein: the power supply (25) is pre-buried in the sound barrier foundation (19); the electric telescopic rods (5, 9) are connected with an air speed sensor (6) arranged on the sound barrier foundation (19) and an intelligent switch (29) in series and are connected with a power supply (25) through electric wires (15).
7. The double-layer staggered porous sound barrier device with the function of actively tuning wind load according to claim 6, wherein: the sound absorption material plates (1, 2, 3, 26, 27, 28) are provided with a plurality of rows of round holes arranged at intervals or a combination of the round holes and the semicircular holes.
8. The double-layer staggered porous sound barrier device with the function of actively tuning wind load according to claim 7, wherein: the power supply (25) is alternating current; the wire (15) is formed by wrapping wear-resistant and corrosion-resistant rubber on the outer side of a copper wire; the steel upright posts (7, 8), the stainless steel frame (13), the electric telescopic rods (5, 9) and the steel baffle plates (4, 10) are all made of stainless steel.
9. The double-layer staggered porous sound barrier device with the function of actively tuning wind load according to claim 8, wherein: the inner layer and the outer layer of the sound absorption material plates (1, 2, 3, 26, 27 and 28) are arranged in three rows, and the size of each sound absorption material plate (1, 2, 3, 26, 27 and 28) is 2m in length, 80cm in width and 10cm in thickness; wherein, part of the sound absorption material plates (1, 2, 27, 28) are provided with two rows of round holes which are spaced by 20cm from top to bottom, each row is provided with 7 round holes, the aperture of each round hole is 20cm, the distance between the centers of two adjacent round holes is 25cm, and the two rows of round holes are respectively spaced by 10cm from the upper edge and the lower edge of the sound absorption material plate and 30cm from the left edge and the right edge of the sound absorption material plate; the other part of the sound absorption material plates (3, 26) are composed of a row of round holes and a row of semicircular holes and comprise an outer bottommost sound absorption material plate (3) and an inner topmost sound absorption material plate (26), wherein the semicircular holes in the outer bottommost sound absorption material plate (3) are arranged on the lower portion of the round holes, and the semicircular holes in the topmost sound absorption material plate (26) are arranged on the upper portion of the round holes.
10. The double-layer staggered porous sound barrier device with the function of actively tuning wind load according to claim 1, wherein: the sound-absorbing material plates are all made of centrifugal glass wool felt.
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