Sound barrier for bridge

Abstract

The sound barrier for the bridge comprises a plurality of stand columns, a sound insulation area, a first sound absorption area and a second sound absorption area, the sound insulation area, the first sound absorption area and the second sound absorption area are arranged between every two adjacent stand columns and sequentially connected from bottom to top, each stand column is provided with a fixed section, a main body section and a bent section which are sequentially connected, and the fixed sections are installed on a bridge guardrail through bolts. The main body section corresponds to the sound insulation area and the first sound absorption area in position, the bent section corresponds to the second sound absorption area in position, a second included angle is formed between the bent section and the main body section, and the angle of the second included angle is larger than 90 degrees and smaller than 180 degrees. The utility model has the advantages of reasonable structure arrangement, simple installation, suitability for bridge installation and use, low processing cost, good stability, good safety, good sound insulation and sound absorption effect, strong wind pressure resistance, maximum deflection less than or equal to 7.2 mm and maximum residual deformation less than or equal to 1mm under the wind pressure of + / -5.0 kPa, and can meet the safe use standard of the bridge.

Description

Technical Field

[0001] The utility model relates to the technical field of noise control, in particular to a sound barrier for bridges. Background Art

[0002] Sound barriers, also known as sound insulation screens or noise barriers, are mainly divided into bridge sound barriers, equipment noise attenuation sound barriers and industrial plant noise sound barriers. Among them, bridge sound barriers are wall structures set up on both sides of the bridge to reduce the impact of traffic noise on nearby residents.

[0003] Patent application number: 202020344505.0, named as a utility model patent document of a road bridge sound barrier, discloses a barrier, including a barrier, a hexagonal shell, a rotating rod, a threaded rod and a locking rod; a bearing is arranged on the top of the barrier, and two groups of bearings are arranged, the inner part of the bearing is connected with a hexagonal shell, the bottom of the hexagonal shell is located inside the barrier, a rotating rod is arranged inside the barrier, the bottom of the hexagonal shell is arranged with a first conical tooth, and the middle part of the rotating rod is arranged with a second conical tooth; threaded rods are fixed at both ends of the rotating rod, and the threaded rod is located inside the thread groove, the thread groove is opened on one side of the locking rod, and rod grooves are opened on both sides of the barrier, the locking rod is located inside the rod groove, the end of the locking rod is plugged into the inside of the locking groove, and the locking groove is opened on the inner wall of the barrier shell. However, the barrier has the problems of complex structure, high processing difficulty, high processing cost and complex installation method. In order to solve the above problems, it is necessary to develop a new type of bridge sound barrier. Utility Model Content

[0004] The utility model aims to provide a sound barrier for a bridge.

[0005] According to one aspect of the utility model, a sound barrier for a bridge is provided, comprising a plurality of columns, a sound insulation zone, a first sound absorption zone, and a second sound absorption zone, which are arranged between two adjacent columns and are connected in sequence from bottom to top, the columns are provided with a fixed section, a main section, and a bent section, which are connected in sequence, the fixed section is mounted on the bridge guardrail by bolts, the main section corresponds to the position of the sound insulation zone and the first sound absorption zone, the bent section corresponds to the position of the second sound absorption zone, a second angle is provided between the bent section and the main section, and the angle of the second angle is greater than 90° and less than 180°.

[0006] In some embodiments, a sound insulation panel is embedded in the sound insulation area, a first sound absorbing panel is embedded in the first sound absorbing area, a second sound absorbing panel is embedded in the second sound absorbing area, and a first angle is provided between the first sound absorbing area and the second sound absorbing area, and the angle of the first angle is the same as the angle of the second angle, both of which are 156°.

[0007] In some embodiments, the utility model further comprises a plurality of shock absorbing pads, which are distributed in the sound insulation zone, the first sound absorption zone and the second sound absorption zone, and the plurality of shock absorbing pads are embedded in the main section and the bending section, with one side thereof abutting against the column and the other side abutting against the sound insulation board, the first sound absorption board or the second sound absorption board.

[0008] In some embodiments, the sound insulation board includes a frame, a first core material, a first keel, a second keel, a first panel and a first back plate, the first core material is fixedly installed in the frame, the first keel is fixedly installed on the top of the frame, the second keel is fixedly installed on the bottom of the frame, the four corners of the frame are fixedly connected using angle codes, the first panel is fixedly installed on the front side of the frame, and the first back plate is fixedly installed on the back side of the frame.

[0009] In some embodiments, the first sound absorbing panel and the second sound absorbing panel have the same structure, and both include a second core material, a third keel, a fourth keel, a second panel and a second back panel, the third keel is fixedly installed on the top of the second core material, the fourth keel is fixedly installed on the bottom of the second core material, the second panel is fixedly installed on the front side of the second core material, the second back panel is fixedly installed on the back side of the second core material, and the second panel is provided with louver-type through holes.

[0010] In some embodiments, the first keel and the third keel have the same structure and are both provided with protrusions, and the second keel and the fourth keel have the same structure and are both provided with grooves, the positions and shapes of the protrusions match the grooves, the upper and lower adjacent grooves are snap-connected with the protrusions, and the protrusions are snap-fitted into the grooves.

[0011] In some embodiments, the utility model further includes a rear cover plate, which is located between the second sound absorbing panel and the first sound absorbing panel, and the rear cover plate is provided with a hanging arm, a supporting arm and a bending arm, and the two ends of the supporting arm are respectively integrally connected with the hanging arm and the bending arm, and the hanging arm is clamped on the groove of the fourth keel of the second sound absorbing panel, and the bending arm is abutted against the third keel of the first sound absorbing panel.

[0012] In some embodiments, the first core material and the second core material have the same structure and material, both of which are processed fiber honeycomb cores with a thickness of 79 mm, a side length of 10 mm, a fire resistance grade of B1, a water absorption rate of ≤5%, and a peel strength of ≥40 (N.mm) / mm. The thickness of the first panel and the second panel are both 0.5 mm, and both are made of zinc-aluminum-magnesium alloy plate. The thickness of the first back panel and the second back panel are both 0.4 mm, and both are made of color steel plate. The first keel, the second keel, the third keel and the fourth keel are made of 1.0 mm thick galvanized steel plate.

[0013] In some embodiments, a coating is disposed on the surface of the first panel and the second panel, and the thickness of the coating is not less than 40 μm.

[0014] In some embodiments, the column is an H-shaped steel column, the height of the fixed section is 1100 mm, the height of the sound insulation zone is 980 mm, and the height of the first sound absorption zone is 510 mm.

[0015] The beneficial effects of the utility model: the utility model has a reasonable structure and is easy to install. It is suitable for installation on bridges and has the advantages of low processing cost, good stability, good safety, and good sound insulation and sound absorption effects. It has strong wind pressure resistance. When the wind pressure is ±5.0kPa, the maximum deflection is less than or equal to 7.2mm, and the maximum residual deformation is less than or equal to 1mm, which can meet the safety standards for the use of bridges. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a schematic structural diagram of a sound barrier for a bridge according to an embodiment of the present invention.

[0017] Figure 2 The present invention is a front view of a sound barrier for a bridge according to an embodiment of the present invention.

[0018] Figure 3 The present invention is a schematic structural diagram of a sound insulation board of a sound barrier for a bridge according to an embodiment of the present invention.

[0019] Figure 4 This is a schematic structural diagram of a first sound absorbing board of a sound barrier for a bridge in one embodiment of the utility model.

[0020] Figure 5 The present invention is a schematic structural diagram of a column of a sound barrier for a bridge according to an embodiment of the present invention.

[0021] Figure 6 for Figure 1 A partial enlarged view of part C.

[0022] Figure 7 for Figure 1 A partial enlarged view of part D.

[0023] Figure 8 for Figure 1 A partial enlarged view of part E in the middle.

[0024] Fig. 9 This is a schematic structural diagram of a rear cover plate of a sound barrier for a bridge according to one embodiment of the utility model. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the embodiments.

[0026] refer to Figures 1 to 9The utility model provides a sound barrier for a bridge, comprising a plurality of columns 1, a sound insulation area arranged between two adjacent columns and connected sequentially from bottom to top, a first sound absorption area, a second sound absorption area, a rear cover plate 10 and a plurality of shock-absorbing pads 5.

[0027] A plurality of columns 1 are fixedly installed on the bridge guardrail 8. The column 1 is provided with a fixed section 11, a main section 12 and a bent section 13 connected in sequence. The fixed section 11 is provided with two symmetrical wing plates 111, and the wing plates 111 are provided with fixing screw holes 112. Bolts 9 are used to pass through the fixing screw holes 112 to fix the wing plates 111 on the bridge guardrail 8. The main section 12 corresponds to the position of the sound insulation zone and the first sound absorption zone, and the bent section 13 corresponds to the second sound absorption zone. A sound insulation board 6 is embedded in the sound insulation zone, and a first sound absorption board 7 and a second sound absorption board 4 are embedded in the first sound absorption zone and the second sound absorption zone, respectively.

[0028] A second angle B is provided between the bending section 13 and the main section 12, and the angle of the second angle B is the same as the first angle A, both being 156°. The second angle B is provided to facilitate the formation of the first angle A between the first sound absorbing area and the second sound absorbing area.

[0029] The angle between the first sound absorbing panel 7 embedded in the first sound absorbing area and the second sound absorbing panel 4 embedded in the second sound absorbing area 4 is 156°. The second sound absorbing panel 4 is inclined, so that the second sound absorbing panel 4 can eliminate the noise propagating in the vertical direction.

[0030] A plurality of shock-absorbing pads 5 are distributed in the sound insulation area, the first sound absorption area and the second sound absorption area. A plurality of shock-absorbing pads 5 are respectively embedded in the main section 12 and the bending section 13, with one side of the shock-absorbing pads 5 abutting against the column 1, and the other side abutting against the sound insulation board 6, the first sound absorption board 7 or the second sound absorption board 4. The thickness of the shock-absorbing pad is 30 mm, and the material is a rubber shock-absorbing pad.

[0031] The sound insulation board 6 includes a frame, a first core material 61, a first keel 62, a second keel 63, a first panel 64 and a first back plate. The first core material 61 is fixedly installed in the frame, the first keel 62 is fixedly installed on the top of the frame, the second keel 63 is fixedly installed on the bottom of the frame, the first panel 64 is fixedly installed on the front of the frame, and the first back plate is fixedly installed on the back of the frame. The four corners of the frame are fixedly connected using angle brackets. The sound insulation board 6 is used to block and eliminate driving noise and reduce the interference of noise to nearby residents.

[0032] The first sound absorbing board 7 has the same structure as the second sound absorbing board 4, and both include a second core material 71, a third keel 72, a fourth keel 73, a second panel 74, and a second back plate. The third keel 72 is fixedly mounted on the top of the second core material 71, the fourth keel 73 is fixedly mounted on the bottom of the second core material 71, the second panel 74 is fixedly mounted on the front of the second core material 71, and the second back plate is fixedly mounted on the back of the second core material. The second panel 74 is provided with a louver-type through hole 741, so that the second core material 71 can absorb noise.

[0033] The first keel 62 and the third keel 72 have the same structure, and are both provided with a protrusion 621. The second keel 63 and the fourth keel 73 have the same structure, and are both provided with a groove 631. The position and shape of the protrusion 621 and the groove 631 match each other, and the upper and lower adjacent grooves 631 are connected by snapping with the protrusion 621, and the protrusion 621 is snapped into the groove 631, so that the upper and lower adjacent sound insulation board and the first sound absorbing board can be easily installed.

[0034] The rear cover 10 is installed between the second sound absorbing panel 4 and the first sound absorbing panel 7. The rear cover 10 is provided with a hanging arm 101, a support arm 102 and a bending arm 103, and the two ends of the support arm 102 are respectively connected to the hanging arm 101 and the bending arm 103. The hanging arm 101 is clamped on the groove 631 of the fourth keel 73 of the second sound absorbing panel 4, and the bending arm 103 is abutted against the third keel 72 of the first sound absorbing panel 7.

[0035] The first core material 61 and the second core material 71 have the same structure and material, both of which are processed fiber honeycomb cores with a thickness of 79 mm, a side length of 10 mm, a fire resistance grade of B1, a water absorption rate of ≤5%, and a peel strength of ≥40 (N.mm) / mm.

[0036] The thickness of the first panel 64 and the second panel 74 are both 0.5 mm, and they are made of zinc-aluminum-magnesium alloy plates. The thickness of the first back plate and the second back plate are both 0.4 mm, and they are made of color steel plates. The first keel, the second keel, the third keel and the fourth keel are made of 1.0 mm thick galvanized steel plates.

[0037] The surfaces of the first panel 64 and the second panel 74 are both provided with a coating, and the thickness of the coating is not less than 40 μm.

[0038] The column 1 is an H-shaped steel column, the height of the fixed section 11 is 1100 mm, the height of the sound insulation zone 2 is 980 mm, and the height of the first sound absorption zone is 510 mm. The column 1 is used to support and install the sound insulation board, the first sound absorption board 7 and the second sound absorption board 4.

[0039] During installation, the utility model uses bolts 9 to pass through the fixing screw holes 112 of the wing plate 111 to fix the fixing section 11 of the column 1 on the bridge guardrail. The left and right ends of the sound insulation board 6 are embedded in the sound insulation area of ​​the main section 12 between two adjacent columns 1, and the second keel 63 of the sound insulation board 6 is in contact with the bottom of the main section 12. The first sound absorbing board 7 is located above the sound insulation board 6, and the protrusion 621 of the first keel 62 of the sound insulation board 6 is clamped in the groove 631 of the fourth keel 73 of the first sound absorbing board 7, so that the first sound absorbing board 7 is clamped and connected with the sound insulation board 6.

[0040] The second sound absorbing panel 4 is embedded in the bending section 13, and the rear cover 10 is clamped between the first sound absorbing panel 7 and the second sound absorbing panel 4, so that the bending arm 103 abuts against the third keel 72 of the first sound absorbing panel 7, and the hanging arm 101 is clamped in the groove 631 of the fourth keel 73 of the second sound absorbing panel 4. The rear cover 10 is used to support the second sound absorbing panel 4, so as to maintain the angle between the second sound absorbing panel 4 and the first sound absorbing panel 7 at 156°. The second panels 74 of the first sound absorbing panel 7 and the second sound absorbing panel 4 both face the road surface of the bridge, and the louvered through holes 741 face the road surface of the bridge to better absorb the noise emitted by vehicles traveling on the bridge.

[0041] A plurality of shock-absorbing pads 3 are embedded between the sound insulation board 6, the first sound absorbing board 7, the second sound absorbing board 4 and the column 1 to fill the gaps between the sound insulation board 6, the first sound absorbing board 7, the second sound absorbing board 4 and the column 1, thereby reducing the vibration of the sound insulation board 6, the first sound absorbing board 7, the second sound absorbing board 4 in the column 1 and maintaining stability.

[0042] The above are only some embodiments of the present invention. For ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A sound barrier for a bridge, characterized in that: The invention comprises a plurality of columns, a sound insulation zone, a first sound absorption zone and a second sound absorption zone which are sequentially connected from bottom to top and are arranged between two adjacent columns, wherein the columns are provided with a fixed section, a main section and a bent section which are sequentially connected, wherein the fixed section is installed on the bridge guardrail by bolts, wherein the main section corresponds to the positions of the sound insulation zone and the first sound absorption zone, wherein the bent section corresponds to the position of the second sound absorption zone, and wherein a second angle is provided between the bent section and the main section, wherein the angle of the second angle is greater than 90° and less than 180°.

2. A bridge sound barrier according to claim 1, characterized in that: A sound insulation panel is embedded in the sound insulation area, a first sound absorption panel is embedded in the first sound absorption area, a second sound absorption panel is embedded in the second sound absorption area, a first angle is provided between the first sound absorption area and the second sound absorption area, and the angle of the first angle is the same as the angle of the second angle, both of which are 156°.

3. A bridge sound barrier according to claim 2, characterized in that: It also includes a plurality of shock-absorbing pads, which are distributed in the sound insulation area, the first sound absorption area and the second sound absorption area. The plurality of shock-absorbing pads are embedded in the main section and the bending section, with one side of the shock-absorbing pads abutting against the column and the other side abutting against the sound insulation board, the first sound absorption board or the second sound absorption board.

4. A bridge sound barrier according to claim 2, characterized in that: The sound insulation board includes a frame, a first core material, a first keel, a second keel, a first panel and a first back plate, the first core material is fixedly installed in the frame, the first keel is fixedly installed on the top of the frame, the second keel is fixedly installed on the bottom of the frame, the four corners of the frame are fixedly connected using angle codes, the first panel is fixedly installed on the front side of the frame, and the first back plate is fixedly installed on the back side of the frame.

5. A bridge sound barrier according to claim 4, characterized in that: The first sound absorbing panel and the second sound absorbing panel have the same structure, and both include a second core material, a third keel, a fourth keel, a second panel and a second back panel, the third keel is fixedly installed on the top of the second core material, the fourth keel is fixedly installed on the bottom of the second core material, the second panel is fixedly installed on the front side of the second core material, the second back panel is fixedly installed on the back side of the second core material, and the second panel is provided with louver-type through holes.

6. A bridge sound barrier according to claim 5, characterized in that: The first keel has the same structure as the third keel and is provided with a protrusion. The second keel has the same structure as the fourth keel and is provided with a groove. The position and shape of the protrusion match the groove. The upper and lower adjacent grooves are snap-connected with the protrusion, and the protrusion is snap-fitted into the groove.

7. A bridge sound barrier according to claim 6, characterized in that: It also includes a rear cover plate, which is between the second sound absorbing panel and the first sound absorbing panel, and the rear cover plate is provided with a hanging arm, a supporting arm and a bending arm, and the two ends of the supporting arm are respectively connected to the hanging arm and the bending arm as a whole, the hanging arm is clamped on the groove of the fourth keel of the second sound absorbing panel, and the bending arm is abutted against the third keel of the first sound absorbing panel.

8. The bridge sound barrier according to claim 5, characterized in that: The first core material and the second core material have the same structure and material, both of which are processed fiber honeycomb cores with a thickness of 79 mm, a side length of 10 mm, a fire resistance grade of B1, a water absorption rate of ≤5%, and a peel strength of ≥40 (N.mm) / mm. The thickness of the first panel and the second panel are both 0.5 mm, and both are made of zinc-aluminum-magnesium alloy plate. The thickness of the first back panel and the second back panel are both 0.4 mm, and both are made of color steel plate. The first keel, the second keel, the third keel and the fourth keel are made of 1.0 mm thick galvanized steel plate.

9. The bridge sound barrier according to claim 5, characterized in that: The surfaces of the first panel and the second panel are both provided with a coating, and the thickness of the coating is not less than 40 μm.

10. The bridge sound barrier according to claim 2, characterized in that: The column is an H-shaped steel column, the height of the fixed section is 1100 mm, the height of the sound insulation zone is 980 mm, and the height of the first sound absorption zone is 510 mm.

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