Reflection-type sound insulation wall

Abstract

To provide a reflection-type sound insulation wall with fall protection.SOLUTION: A reflection-type sound insulation wall is provided with a reflection-type sound insulation panel 10 which has both side parts fitted between flanges of a plurality of H-steel supports erected at intervals, has an uneven side 11A, 11B formed on a front surface, has a hollow inside, is made of a metal, and has a rectangular parallelepiped shape. The reflection-type sound insulation panel 10 includes a first wire rope insertion passage through which a wire rope 40 for preventing the panel from falling, which is made to pass in a height direction in each of both side parts of the panel, passes, and a second wire rope insertion passage through which a wire rope 30 for preventing the support from rotating, which is made to pass in a width direction in an upper end part of the panel, passes.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] This invention relates to a reflective sound barrier and a reflective sound panel.

Background Art

[0002] In order not to let the noise and road surface noise from vehicles and the like out, sound barriers are installed on the roadside of highways, motorways, major national roads, etc. Sound barriers are roughly classified into a reflective type (mainly made of concrete) that bounces sound off the wall and an absorptive type (mainly made of metal and storing sound-absorbing materials) that absorbs sound with a sound-absorbing material. The reflective sound barrier is mainly used in the embankment section, and the absorptive sound barrier is mainly used in the bridge section.

[0003] Unlike the absorptive sound barrier installed in the bridge section, the reflective sound barrier installed in the embankment section generally does not have a fall prevention measure. This is because there are few houses or the like around the embankment section where the reflective sound barrier is installed.

[0004] In recent years, there have been cases where a fall prevention measure is required for the reflective sound barrier installed in the embankment section depending on the conditions. However, the concrete sound barrier that occupies most of the reflective sound barriers is heavy, and it is difficult to take the fall prevention measure itself.

[0005] Patent Document 1 discloses a metal reflective sound barrier. The metal sound barrier is lighter in weight than the concrete sound barrier. However, no fall prevention measure is taken for the sound barrier of Patent Document 1.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] The object of the present invention is to provide a reflective sound insulation wall and a sound insulation panel with fall prevention measures.

[0008] The reflective sound insulation wall according to the present invention includes a plurality of H-shaped steel columns erected at intervals, and a reflective sound insulation panel made of metal in a rectangular parallelepiped shape with a hollow interior, having concavities and convexities formed on the front surface, and both side portions thereof are fitted between flanges constituting the H-shaped steel columns. The reflective sound insulation panel is provided with a first wire rope insertion passage through which a wire rope for preventing panel fall, which passes in the height direction, passes through each of the two side portions thereof, and a second wire rope insertion passage through which a wire rope for preventing column rotation, which passes in the width direction, passes through the upper end portion thereof. Through holes through which wire ropes pass are formed in the webs constituting the H-shaped steel columns at the upper end portion and the lower end portion of the H-shaped steel columns, respectively. One wire rope for preventing panel fall common to a plurality of reflective sound insulation panels arranged in the height direction passes through the through holes at the upper end portion and the lower end portion of the H-shaped steel columns and the first wire rope insertion passages of the plurality of reflective sound insulation panels, and one wire rope for preventing column rotation common to the plurality of H-shaped steel columns passes through the through holes at the upper end portions of the plurality of H-shaped steel columns and the second wire rope insertion passages of the plurality of reflective sound insulation panels arranged in the width direction.

[0009] The present invention also provides a reflective sound insulation panel constituting the reflective sound insulation wall. The reflective sound insulation panel according to the present invention is in a rectangular parallelepiped shape made of metal with a hollow interior, has concavities and convexities formed on the front surface, and is provided with a first wire rope insertion passage through which a wire rope for preventing panel fall, which passes in the height direction, passes through each of the two side portions thereof, and a second wire rope insertion passage through which a wire rope for preventing column rotation, which passes in the width direction, passes through the upper end portion thereof.

[0010] The reflective sound insulation panel is in a rectangular parallelepiped shape and has a front surface, a back surface, an upper surface, a bottom surface (lower surface), and left and right side surfaces. The front surface of the reflective sound insulation panel faces the road side where vehicles and the like travel.

[0011] Both side portions of the reflective sound insulation panel are fitted into H-shaped steel columns erected at intervals. The H-shaped steel column has a cross-section similar to the shape of the alphabet letter "H", and includes flanges arranged in parallel with each other at intervals and a web connecting the flanges. The side portions of the reflective sound insulation panel are fitted into each of the two gaps (grooves) extending in the height direction formed by the web and the flanges.

[0012] According to the present invention, since the first and second wire rope insertion passages through which the wire ropes for preventing panel drop and preventing column rotation respectively pass are formed inside the reflective sound insulation panel, the wire ropes for preventing panel drop and preventing column rotation can be protected from rain and wind. There is no need to attach a separate member for protecting the wire rope from wind and rain to the sound insulation panel.

[0013] Since irregularities are formed on the front surface of the reflective sound insulation panel constituting the reflective sound insulation wall, exhaust sounds, road surface sounds, etc. from vehicles reflected on the front surface of the reflective sound insulation panel can be scattered in various directions, and the sound insulation (sound attenuation) effect can be enhanced. Further, since the reflective sound insulation panel is made of metal with a hollow interior, it is lighter than a concrete sound insulation panel and is easy to handle.

[0014] In one embodiment, the wire rope for preventing panel drop passes through the through hole at the upper end of the H-shaped steel column, passes through the first wire rope insertion passage on one side portion of a plurality of reflective sound insulation panels arranged in the height direction on one side of the web of the H-shaped steel column downward, passes through the through hole at the lower end of the H-shaped steel column in the opposite direction, passes through the first wire rope insertion passage on the other side portion of a plurality of reflective sound insulation panels arranged in the height direction on the other side of the web of the H-shaped steel column upward, and passes through the through hole at the upper end of the H-shaped steel column. Terminal tools having a size that does not pass through the through hole at the upper end of the H-shaped steel column are fixed to both tip ends of the first wire rope. With a single wire rope for preventing panel drop, a plurality of reflective sound insulation panels arranged in the height direction on both sides of the H-shaped steel column can be gently restrained to the H-shaped steel column. Even if a vehicle hits the reflective sound insulation panel, it is less likely that only the reflective sound insulation panel will be blown away.

[0015] In other embodiments, terminal tools having a size that does not pass through the through holes at the upper ends of the H-shaped steel columns are fixed to both end portions of the wire rope for preventing rotation of the column. Even if any one of the plurality of H-shaped steel columns tilts outward due to a collision of a vehicle or the like, it is possible to prevent the H-shaped steel column that has tilted due to the H-shaped steel column that has avoided the collision and the wire rope for preventing rotation of the column from rotating outward about its base.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Examples

[0017] FIG. 1 is a front view of a reflective sound barrier. FIG. 2 is a perspective view of a reflective sound panel that constitutes the reflective sound barrier. FIG. 3 is a cross-sectional view of the reflective sound panel along line III-III of FIG. 2.

[0018] Referring to FIG. 1, the reflective sound barrier is configured by fitting and stacking the sides of a plurality of reflective sound panels 10 in the grooves between the opposing flanges of H-shaped steel columns 20 erected at intervals. The height of the reflective sound barrier is adjusted by increasing the number of stacked reflective sound panels 10. The overall length of the reflective sound barrier is adjusted by increasing the number of H-shaped steel columns 20 to be erected. The reflective sound barrier is generally provided on both sides of a road, particularly a road in the embankment section.

[0019] Referring to FIGS. 2 and 3, the reflective sound insulation panel 10 that constitutes the reflective sound insulation wall includes a front panel 11, a back panel 12, side panels 13, and a partition plate 15. The reflective sound insulation panel 10 (front panel 11, back panel 12, side panels 13, and partition plate 15) is made of, for example, a hot-dip zinc-aluminum-magnesium alloy plated steel sheet.

[0020] The front panel 11 has a rectangular shape with a length in the width direction longer than the length in the height direction, and a plurality of convex portions 11A and concave portions 11B extending in the direction connecting the left and right sides are alternately formed in the vertical direction. The reflective sound insulation wall is installed with its front panel 11 facing the road side. The convex portions 11A and concave portions 11B formed on the front panel 11 can scatter exhaust sounds, road surface sounds, etc. from vehicles and the like in various directions, enhancing the sound insulation effect (sound attenuation effect).

[0021] The back panel 12 has portions (upper surface portion and lower surface portion) extending in the direction of the front panel 11 at its upper edge end and lower edge end. By assembling the front panel 11 and the back panel 12, a box body with openings on the left and right is formed. The left and right openings are closed by the side panels 13 that secure a space (passage) through which the wire ropes 30 and 40 described below pass.

[0022] Inwardly facing substantially semi-circular cutouts 12A are formed at both left and right ends of the upper surface portion and lower surface portion of the back panel 12. Through the cutouts 12A, wire ropes 40 can pass vertically (in the height direction) through each of the left and right sides of the reflective sound insulation panel 10. That is, the cutouts 12A form insertion passages through which the wire ropes 40 pass vertically through both sides of the reflective sound insulation panel 10. Also, referring to FIG. 2, in order to store the wire ropes 40 passed vertically within both sides of the reflective sound insulation panel 10 and loosely restrain the reflective sound insulation panel 10 to the H-shaped steel column 20 via the wire ropes 40, a side surface fixing plate 14 that connects a part of the side edge of the front panel 11 and a part of the side end of the back panel 12 is provided.

[0023] Instead of providing the side fixing plate 14, eyebolts may be fixed to the side plate 13, and the wire rope 40 may be passed through the holes of the eyebolts.

[0024] Referring to FIG. 1, for each H-shaped steel column 20 constituting the reflective sound insulation wall, a wire rope 40 is provided that passes in the height direction. That is, for each H-shaped steel column 20, a loop is formed by a single wire rope 40 passing through the through holes 24 and 25 formed at the upper and lower ends of the H-shaped steel column 20, respectively, and the wire rope 40 is provided so as to vertically encircle the H-shaped steel column 20 (its web). The wire rope 40 passed in the height direction is for preventing the reflective sound insulation panel 10 from falling when a vehicle or the like collides with the reflective sound insulation wall, and hereinafter, it is referred to as a wire rope 40 for preventing panel drop.

[0025] FIG. 4 shows a perspective view of the upper end portion of the H-shaped steel column 20. The H-shaped steel column 20 includes a pair of flanges 21 and 22 and a web 23, and the side portions of the reflective sound insulation panel 10 are received in the grooves extending in the height direction formed on each side of the web 23. In FIG. 4, the illustration of the reflective sound insulation panel 10 is omitted.

[0026] Referring to FIGS. 1 and 4, terminal fittings 41 are respectively fixed to both ends of the wire rope 40 for preventing panel drop. Referring to FIG. 4, the terminal fitting 41 at one end of the wire rope 40 for preventing panel drop is located in one groove of the H-shaped steel column 20 partitioned by the web 23 (which is also the groove on one side of the reflective sound insulation panel 10). Similarly, the terminal fitting 41 at the other end of the wire rope 40 for preventing panel drop is located in the other groove of the H-shaped steel column 20, respectively. That is, one wire rope 40 for preventing panel drop intersects at the through hole 24 at the upper end portion of the H-shaped steel column 20. The terminal fitting 41 is larger than the through hole 24 formed in the web 23 through which the wire rope 40 for preventing panel drop passes, and the terminal fitting 41 does not come out of the through hole 24.

[0027] Referring to Fig. 3, a partition plate 15 is fixed to the upper end inside the reflective sound insulation panel 10. A wire rope insertion passage 17 extending in the width direction is formed in the reflective sound insulation panel 10 by the partition plate 15. Referring to Fig. 1, a wire rope 30 is passed through the wire rope insertion passage 17 and the through hole 24 formed in the web 23 of the H-shaped steel column 20 at the upper end of the reflective sound insulation wall in the width direction. The wire rope 30 is for preventing the H-shaped steel column 20 (and the reflective sound insulation panel 10) from rotating when a vehicle or the like collides with the reflective sound insulation wall, and is hereinafter referred to as the wire rope 30 for preventing column rotation.

[0028] The wire rope 30 for preventing column rotation is provided across a plurality of H-shaped steel columns 20 and is passed through the wire rope insertion passage 17 of the reflective sound insulation panel 10 located at the uppermost stage among the plurality of reflective sound insulation panels 10 provided between the plurality of H-shaped steel columns 20. One wire rope 30 for preventing column rotation is commonly used for three or more, preferably a larger number of H-shaped steel columns 20. Referring to Fig. 4, at the end of the wire rope 30 for preventing column rotation passed through the through holes 24 of the plurality of H-shaped steel columns 20 and the wire rope insertion passages 17 of the plurality of reflective sound insulation panels 10 arranged in the width direction, a terminal fitting 31 larger than the through hole 24 formed in the web 23 of the H-shaped steel column 20 is fixed, and the terminal fitting 31 will not fall out of the through hole 24 either.

[0029] Regarding the wire rope 30 for preventing column rotation, the above-mentioned terminal fitting 31 may be fixed to one end thereof, and the other end may be firmly fixed to the web 23 of the H-shaped steel column 20 using bolts and nuts.

[0030] Both the wire rope 30 for preventing column rotation and the wire rope 40 for preventing panel fall are housed inside the reflective sound insulation panel 10, so they are not exposed to wind and rain. The wire rope 30 for preventing column rotation and the wire rope 40 for preventing panel fall can be protected from wind and rain.

[0031] After stacking the topmost reflective sound insulation panel 10 in the groove of the H-shaped steel column 20, the notch 12A at both left and right ends of the upper surface of the groove part of the H-shaped steel column 20 or the upper surface part of the back plate 12 of the reflective sound insulation panel 10 may be closed with a plate material or the like. The entry of rainwater into the wire rope insertion passage 17 through which the wire rope 30 for preventing column rotation passes and the entry of rainwater into the groove of the H-shaped steel column 20 through which the wire rope 40 for preventing panel drop passes can be further suppressed.

[0032] Since the reflective sound insulation panel 10 is made of metal with a hollow interior, it is light and easy to handle in transportation work and installation work. Therefore, it is advantageous for shortening the installation work of the reflective sound insulation wall and reducing the number of personnel.

[0033] The partition plate 15 and the wire rope insertion passage 17 formed by the partition plate 15 need only be provided in the topmost reflective sound insulation panel 10 among the plurality of reflective sound insulation panels 10 constituting the reflective sound insulation wall. However, if the structures of the reflective sound insulation panel installed at the topmost part and the reflective sound insulation panels provided at other (non-topmost) locations are made different, the management cost may be higher than the cost of providing the partition plate 15. By adopting a uniform structure in which all the reflective sound insulation panels 10 constituting the reflective sound insulation wall are provided with the partition plate 15 and the wire rope insertion passage 17 formed by the partition plate 15, it is advantageous in terms of cost.

Explanation of Reference Numerals

[0034] 10 Reflective sound insulation panel 11 Front plate 11A Protrusion 11B Recess 12A Notch 13 Side plate 14 Side fixing plate 15 Partition plate 17 Wire rope insertion passage 20 H-shaped steel column 21, 22 Flange 23 Web 24, 25 Through hole 30 Wire rope for preventing column rotation 31,41 Terminal device 40 Wire rope for preventing panel from falling

Claims

1. A plurality of H-shaped steel columns erected at intervals, and a reflective sound insulation panel made of metal in the shape of a rectangular parallelepiped with a hollow interior, having unevenness formed on the front surface and both side portions fitted between the flanges constituting the H-shaped steel columns, wherein the reflective sound insulation panel is provided with a first wire rope insertion passage through which a wire rope for preventing panel drop, passing in the height direction, passes through each of both side portions thereof, and a second wire rope insertion passage through which a wire rope for preventing column rotation, passing in the width direction, passes through at the upper end portion thereof, wherein through holes through which wire ropes pass are formed in the webs constituting the H-shaped steel columns at each of the upper end portion and the lower end portion of the H-shaped steel columns, wherein one wire rope for preventing panel drop common to a plurality of reflective sound insulation panels arranged in the height direction passes through the through holes at the upper end portion and the lower end portion of the H-shaped steel columns and the first wire rope insertion passages of the plurality of reflective sound insulation panels, wherein one wire rope for preventing column rotation common to a plurality of H-shaped steel columns passes through the through holes at the upper end portions of the plurality of H-shaped steel columns and the second wire rope insertion passages of the plurality of reflective sound insulation panels arranged in the width direction, A reflective sound insulation wall.

2. The wire rope for preventing panel drop passes through the through hole at the upper end portion of the H-shaped steel column, passes downward through the first wire rope insertion passage at one side portion of a plurality of reflective sound insulation panels arranged in the height direction on one side of the web of the H-shaped steel column, passes through the through hole at the lower end portion of the H-shaped steel column, passes upward through the first wire rope insertion passage at the other side portion of a plurality of reflective sound insulation panels arranged in the height direction on the other side of the web of the H-shaped steel column, and passes through the through hole at the upper end portion of the H-shaped steel column, and a terminal fitting having a size that does not pass through the through hole at the upper end portion of the H-shaped steel column is fixed to the tip end portion of the wire rope for preventing panel drop. The reflective sound insulation wall according to Claim 1.

3. A terminal fitting having a size that does not pass through the through hole at the upper end portion of the H-shaped steel column is fixed to the tip end portion of the wire rope for preventing column rotation. The reflective sound insulation wall according to Claim 1 or 2.

4. A reflective sound insulation panel made of metal in the shape of a rectangular parallelepiped with a hollow interior, having unevenness formed on the front surface, and provided with a first wire rope insertion passage through which a wire rope for preventing panel drop, passing in the height direction, passes through each of both side portions thereof, and a second wire rope insertion passage through which a wire rope for preventing column rotation, passing in the width direction, passes through at the upper end portion thereof. A reflective sound insulation panel.

Images