JP2009035955A - Sound-absorbing structure and protective fence with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that the work of installing sound-absorbing plates between supports from one side of a protective fence has been difficult and connect the sound-absorbing plates while being bent along the horizontal alignment and gradient of a road. <P>SOLUTION: A sound-absorbing structure includes the sound-absorbing plates provided with a function to absorb noise; a fixing band for connecting ends of adjacent sound-absorbing plates to each other; and a support cover mounted to the fixing band. A sound-absorbing plate comprises a sound-absorbing plate main body housing a sound-absorbing material inside and connecting ends provided in such a way as to extend in the direction of extension of the sound-absorbing plate body from both ends of the sound-absorbing plate body. The connecting ends are provided for a section close to one surface of the sound-absorbing plate body. The fixing band comprises a member having an opening of a size capable of surrounding a support of the protective fence. Each end of the fixing band on the opening side is provided with a flange, and the flange of the fixing band is connected to a connecting end of the sound-absorbing plate. The back side of the fixing band is positioned on the other surface side of the sound-absorbing plate. The support cover is mounted to the back side of the fixing band. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention provides a sound absorbing structure for preventing automobile noise generated on the road from leaving the road as much as possible and a protective fence provided with the sound absorbing structure, in particular, a low-rise sound insulating wall to be installed in the median of the road. The present invention relates to a sound absorbing structure and a protective fence including the sound absorbing structure.

  Various protective fences are installed on the side and center of the road to ensure traffic safety by clarifying the traffic area of people and vehicles and adjusting the flow of vehicles. Some of these protective fences installed on the road are provided with a sound absorbing structure so that automobile noise generated on the road is prevented from coming out of the road as much as possible.

  FIG. 11 is an explanatory diagram of an example of a conventional protective fence to which a sound absorbing structure is attached. As shown in the figure, reference numeral 100 denotes a protective fence, and the protective fence 100 includes a plurality of support columns 104 provided at a predetermined interval on a concrete foundation 102, and a box beam 106 installed on the upper end portion of the support column 104. And a plurality of second support columns 108 provided vertically on the box beam 106 at a predetermined interval, and a protective fence 110 provided between the second support columns 108.

  A sound absorbing plate 112 is attached between the columns 104. The sound absorbing plate 112 is a box-shaped body having a thickness, and a sound absorbing material is accommodated therein. The sound absorbing plates 112 adjacent to each other through the support columns 104 are connected and fixed to each other by various connecting structures. A sound absorbing structure is constituted by a plurality of sound absorbing plates 112 attached to the protective fence 100.

  FIG. 12 is a plan sectional view showing an example of a conventional connection structure of sound absorbing structures. As shown in the figure, at one end portion of the sound absorbing plate 112, a connecting end portion 114 provided in a state of projecting in the extending direction of the sound absorbing plate 112 from a portion close to one surface of the sound absorbing plate 112, A connection step 116 is provided on the other surface of the sound absorbing plate 112 so as to be recessed in a step shape.

  In addition, at the opposite end of the sound absorbing plate 112 or the opposite end of the adjacent sound absorbing plate 112, there is a connecting step 118 provided in a stepped shape on one surface side of the sound absorbing plate 112. A connecting end 120 is provided so as to protrude in a direction in which the sound absorbing plate 112 extends from a portion close to the other surface of the sound absorbing plate 112.

  The opposite end portions of the adjacent sound absorbing plates 112 are in contact with each other so as to surround the column 104, and the connecting end portion 114 and the connecting step portion 118, and the connecting step portion 116 and the connecting end portion 120 of the adjacent sound absorbing plate 112 are fitted. They are overlapped together and connected and fixed by bolts and nuts.

  FIG. 13 is a cross-sectional plan view showing another example of a conventional connection structure for sound absorbing structures. As shown in the figure, at one end portion of the sound absorbing plate 112, a connecting step portion 122 provided in a stepped manner on one surface side of the sound absorbing plate 112 and the other end of the sound absorbing plate 112 are provided. There is provided a connecting end portion 124 provided in a state of projecting in the extending direction of the sound absorbing plate 112 from a portion close to the surface side.

  In addition, at the opposite end of the sound absorbing plate 112 or the end of the opposing sound absorbing plate 112, there is a connection step 122 provided in a step-like depression on one surface side of the sound absorbing plate 112, and a sound absorbing A connection end portion 124 is provided so as to protrude in a direction in which the sound absorbing plate 112 extends from a portion close to the other surface side of the plate 112.

  Each strut 104 of the protective fence 100 is sandwiched between opposing ends of the sound absorbing plate 112 adjacent to each other via the strut 104 in a state where the connection end portions 124 and 124 and the joining panel 126 are in contact with the strut 104. The adjacent sound absorbing plates 112, 112 are connected and fixed to each connecting step 122, 122 by attaching a joining panel 126 with bolts and nuts.

  The conventional sound absorbing structure can be easily attached to the protective fence without dismantling the protective fence.

  However, the end portion of the conventional sound absorbing structure has a connecting structure as described above, that is, a connecting structure that connects the blocks to each other, and is in contact with the support column so that the sound absorbing plate is distorted. It is difficult to connect and may be processed in advance, but it is difficult to process. Therefore, when the road has a curved surface or a vertical gradient, the adjacent sound absorbing plate is bent to・ There was a problem that it was difficult to connect with nuts.

  In addition, since the conventional work to install the sound absorbing structure must be performed from both the front and back sides of the sound absorbing structure, that is, from the front and back sides of the protective fence, workers are placed on both the front and back sides of the protective fence. There was a problem that labor costs were required.

In addition, the conventional sound absorbing structure requires a complicated bending process for the side plate and requires many man-hours. Therefore, there is a problem that the manufacturing cost of the sound absorbing structure increases. In addition, when the shape and outer dimensions of the support are different, it is necessary to change the shape of the sound absorbing plate.
JP-A-10-338913 JP 2000-290939 A

  The problem to be solved by the present invention is that it is difficult to install a sound absorbing plate between the guard fence posts from one side of the protective fence, and the adjacent sound absorbing plates are bent along the plane alignment or gradient of the road It is difficult to connect with each other, it is difficult to process the side plate, top plate, and bottom plate in the production of the sound absorbing plate, and the shape of the sound absorbing plate must be changed when the shape and outer dimensions of the columns are different.

  The present invention makes it difficult to install a sound absorbing plate from one side of the protective fence between the columns of the protective fence, and it can be connected in a state where adjacent sound absorbing plates are bent along a plane curve or longitudinal gradient of the road In order to facilitate the processing of the side plate, top plate, and bottom plate in the production of the sound absorbing plate, the sound absorbing structure is as follows so that the shape of the sound absorbing plate is not changed even if the shape and outer dimensions of the columns are different. Configured.

  That is, the present invention includes a sound absorbing plate having a function of absorbing noise, a fixed band that connects ends of the adjacent sound absorbing plates, and a support cover attached to the fixed band, and the sound absorbing plate Comprises a sound-absorbing plate main body in which a sound-absorbing material is housed, and connecting end portions that project from both ends of the sound-absorbing plate main body in the extending direction of the sound-absorbing plate main body. The fixed band is provided at a part close to one surface of the main body, and the fixed band is made of an opening member that can surround the support fence post, and a hook is provided at each end of the fixed band on the opening side. A connecting end portion of the sound absorbing plate and a collar portion of the fixing band are connected, a back side of the fixing band is on the other surface side of the sound absorbing plate, and the support cover is on the back side of the fixing band. It is characterized by being attached.

  Here, the connecting end portions of the adjacent sound absorbing plates may be connected by the fixed band and the auxiliary band. As the fixing band, for example, a substantially hat-shaped cross section or a substantially C-shaped cross section can be used. The sound absorbing plate may be a double-sided sound absorbing plate or a single-sided sound absorbing plate. The column cover preferably has a surface on the front side similar to the appearance on the other surface side of the sound absorbing plate. The bolt insertion hole provided at the connection end of the sound absorbing plate is preferably a long hole in the longitudinal direction of the sound absorbing plate.

  When the sound absorbing plate of the present invention is attached to a protective fence installed on the road, the bolts and nuts are fastened only on one side of the protective fence. Therefore, there is an advantage that all the work of mounting the sound absorbing plate can be performed from one surface side of the protective fence, and therefore the work efficiency when mounting the sound absorbing plate to the protective fence can be increased.

  In addition, when the sound absorbing plate of the present invention is attached to a protective fence installed on a road, the adjacent sound absorbing plates are connected by a fixed band made of an open member having a size capable of enclosing the support fence post. Because the fixing band is flat and easy to bend, it can be connected and fixed even when the adjacent sound absorbing plates are bent to some extent (not straight). There is an advantage that it is possible to easily cope with the case where there is, or when there is a slight difference in the column spacing.

  In addition, when the sound absorbing plate of the present invention is attached to a guard fence installed on the road, the adjacent sound absorbing plates are connected by a fixed band made of an open member having a size capable of surrounding the support fence post. Can be attached from one side of the column, and can be attached to the existing protective fence from one side of the road without dismantling the protective fence.

  In addition, since the sound absorbing plate of the present invention has a relatively simple end, the side plate can be easily formed with simple bending and a small number of processing steps. There is an advantage that it can be manufactured.

  In addition, the sound absorbing plate of the present invention can be dealt with by an easy method of changing the size of the fixed band, the column cover and the auxiliary band without changing the shape of the sound absorbing plate when the shape and outer dimensions of the column are different. There is no need to prepare a plurality of types of sound absorbing plates, and therefore there is an advantage that the sound absorbing plates can be manufactured at low cost.

  In addition, the sound absorbing plate of the present invention has an advantage that when the front surface of the support cover is similar to the appearance of the other surface side of the sound absorbing plate, a structure without front and back can be realized, and the landscape is improved. is there.

  In addition, the sound absorbing plate of the present invention has an advantage that the sound absorbing effect of both side surfaces such as the central separation band is improved when the sound absorbing plate is a double-sided sound absorbing plate, and when the sound absorbing plate is a single-sided sound absorbing plate, such as a roadway and a sidewalk. There is an advantage that the sound absorption effect on the road surface side is improved at the boundary.

  The sound absorbing plate of the present invention can be attached so as to surround the column by the fixing band and the auxiliary band, so that it can be mounted without rattling, and therefore the sound absorbing plate is mounted on the column without rattling. There is an advantage that you can.

  In addition, the sound absorbing plate of the present invention can prevent the installation error between the columns and the longitudinal gradient when the bolt insertion hole provided at the coupling end of the sound absorbing plate is a long hole in the longitudinal direction of the sound absorbing plate. Thus, there is an advantage that the sound absorbing plate can be easily attached.

  Sound absorption structure can be attached by one person from one side of the protective fence, and the sound absorption effect is impaired with a simple structure, with the purpose that the connection of adjacent sound absorption structures can easily cope with road surface bending, vertical slope, etc. Realized without.

  1 is a front view of a guard fence for a median strip, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line BB in FIG. In these drawings, reference numeral 10 denotes a protective fence, and the protective fence 10 includes a plurality of support pillars 12 and a guard rail 14 attached to the upper part of the support pillars 12 in the lateral direction. The support column 12 has a cylindrical shape, and the plurality of support columns 12 are installed at predetermined intervals in the center of the road. A sound absorbing structure 16 is attached below the guard rail 14 between the columns 12 and 12.

  As shown in FIG. 9, which will be described later, the sound absorbing structure 16 includes a sound absorbing plate 18 having a function of absorbing noise and a pair of upper and lower fixed bands 20 and 20 that connect the ends of adjacent sound absorbing plates 18 and 18 to each other. And a support cover 22 attached to the back side of the fixed bands 20 and 20.

  4 is a plan sectional view of the sound absorbing plate, FIG. 5 is a front view of the sound absorbing plate, FIG. 6 is a plan sectional view of the fixing band before being attached to the column, and FIG. 7 is a plan sectional view of the fixing band after being attached to the column. 8 is a cross-sectional plan view before the sound absorbing plate is connected with the fixing band, FIG. 9 is a cross-sectional plan view after the sound absorbing plate is connected with the fixing band, and FIG. 10 is a connection between the sound absorbing plate and the end cover with the fixing band. FIG.

  As shown in FIG. 4, the sound absorbing plate 18 includes a sound absorbing plate main body 26 in which a sound absorbing material 24 is housed, and a connecting end provided so as to protrude from both ends of the sound absorbing plate main body 26 in the extending direction of the sound absorbing plate main body 26. Parts 28 and 28. The sound absorbing material 24 is housed on both the front side and the back side of the sound absorbing plate body 26. The connecting end portion 28 is provided at a portion close to one side (front side) of the sound absorbing plate main body 26.

  As shown in FIG. 5, sound absorbing surface portions 30 that guide noise to the sound absorbing material 24 inside the sound absorbing plate main body 26 are provided at a predetermined interval on the front and back surfaces of the sound absorbing plate main body 26. The sound absorbing surface portion 30 is formed by forming a slit having a predetermined width formed in the longitudinal direction of the sound absorbing plate 18 in a vertical shape. Bolt insertion holes 32 are provided in the connecting end portion 28 of the sound absorbing plate 18. The bolt insertion hole 32 is a long hole in the longitudinal direction of the sound absorbing plate 18.

  As shown in FIGS. 6 and 7, the fixing band 20 is formed of a belt-like member having an opening size that can surround the support column 12 of the protective fence 10. The fixed band 20 has a substantially hat shape. A flange 34 extending outward is provided at each end of the fixed band 20 on the opening side, and a nut 36 is welded to the flange 34. The connecting end portion 28 of the sound absorbing plate 18 and the flange portion 34 of the fixed band 20 are connected by a bolt 40 and a nut 36 in a state where the flange portion 34 of the fixed band 20 is connected by an auxiliary band 38.

  Since the fixed band 20 is in contact with the surface of the support column 12 in the extending direction of the sound absorbing structure 16, it does not move in the extending direction. Further, since the auxiliary band 38 and the fixed band 20 are brought into contact with the surface of the support column 12 in the perpendicular direction of the sound absorbing structure 16, they do not move in the perpendicular direction. Therefore, the auxiliary band 38 and the fixed band 20 can be brought into contact with each other so as to surround the column 12. The sound-absorbing plate 18 does not directly contact the support column 12 as in the prior art, and can be indirectly fixed to the support column 12 by the fixing band 20. Although the fixed band 20 is brought into contact with the extending direction and the right angle direction of the sound absorbing structure 16, either one may be brought into contact with the support column 12, or none may be brought into contact with the support column 12.

  As shown in FIGS. 8 and 9, the back side of the fixed band 20 faces the same direction as the other surface side (upper side: back side in these drawings) of the sound absorbing plate 18, and the back side of the fixed band 20. A column cover 22 is attached to the column. The surface of the support cover 22 on the front side (the other surface side of the sound absorbing plate 18) is similar to the appearance of the other surface side of the sound absorbing plate 18. As shown in FIG. 10, an end cover 42 is connected to the outermost end of the sound absorbing plate 18 via the fixing band 20.

  In the figure used in the above description, the column cover 22 has a box shape, but the column cover 22 may have a plate shape.

  Next, a procedure for attaching the sound absorbing structure 16 to the protective fence 10 will be described.

  As shown in FIG. 8, an operator on one side (front side) of the protective fence 10 fits the fixed band 20 with the column cover 22 on the other side of the column 12. Next, the sound absorbing plate 18 is installed between the support columns 12 from one side of the protective fence 10, and the adjacent connection end portions 28 are aligned with one surface side of the support column 12 through the support columns 12. Then, as shown in FIG. 9, the auxiliary band is overlapped with the flange portion of the fixed band 20, the nut of the flange portion of the fixed band 20 is aligned with the hole 32 of the connecting end portion 28, and the bolt 40 is inserted into the hole 32. The bolt 40 is screwed into the nut 36.

  Since the sound-absorbing plate 18 is not provided at the outermost end of the protective fence 10, an end cover 44 is attached instead, as shown in FIG. The end cover 44 has the same connecting end portion 28 as the sound absorbing plate 18, and the connecting end portion 28 and the connecting end portion 28 of the sound absorbing plate 18 are connected in the same manner by the fixing band 20.

  When this sound absorbing structure is attached to a protective fence installed on the road, the bolts and nuts are fastened only on one side of the protective fence. Therefore, it is possible to perform all the work of mounting the sound absorbing plate from one side of the protective fence.

  In addition, when this sound absorbing structure is attached to a protective fence installed on the road, adjacent sound absorbing plates are connected by a fixed band made of an open member of a size that can surround the support fence's support column. Even if the board is bent to some extent, it can be connected and fixed.

  In addition, when this sound absorbing structure is attached to a protective fence installed on the road, the adjacent sound absorbing plates are connected by a fixed band made of an open member having a size capable of enclosing the support fence's support column. It can be attached to the fence from one side of the road without dismantling the protective fence.

It is a front view of the guard fence for median strips. It is AA arrow sectional drawing of FIG. It is BB arrow sectional drawing of FIG. It is a plane sectional view of a sound absorption board. FIG. 5 is a front view of the sound absorbing plate. It is a plane sectional view of a fixed band before attaching to a support. It is a plane sectional view of a fixed band after attaching to a support. It is a plane sectional view before connecting a sound-absorbing board with a fixed band. It is a plane sectional view after connecting a sound absorption board with a fixed band. It is a plane sectional view after connecting a sound-absorbing plate and an end cover with a fixed band. It is explanatory drawing of an example of the protection fence to which the sound absorption structure was attached. It is a plane sectional view which shows an example of the connection structure of a sound absorption structure. It is a plane sectional view showing other examples of a connection structure of sound absorption structures.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Guard fence 12 Support rail 14 Guard rail 16 Sound absorption structure 18 Sound absorption board 20 Fixed band 22 Strut cover 24 Sound absorption material 26 Sound absorption board main body 28 Connection end part 30 Sound absorption surface part 32 Hole 34 Gutter part 36 Nut 38 Auxiliary band 40 Bolt 42 End cover

Claims (11)

  A sound absorbing plate having a function of absorbing noise, a fixing band for connecting ends of the adjacent sound absorbing plates, and a support cover attached to the fixing band, the sound absorbing plate having a sound absorbing material inside. The housed sound absorbing plate main body, and a connecting end portion that protrudes from both ends of the sound absorbing plate main body in the extending direction of the sound absorbing plate main body, the connecting end portion on one surface of the sound absorbing plate main body The fixed band is formed of a member having an opening size that can surround the support fence post, and a flange is provided at each end of the fixed band on the opening side. The connecting end portion and the flange portion of the fixed band are connected, the back side of the fixed band is on the other surface side of the sound absorbing plate, and the column cover is attached to the back side of the fixed band. Characteristic sound absorbing structure.   The sound absorbing structure according to claim 1, wherein connecting end portions of adjacent sound absorbing plates are connected by the fixed band and the auxiliary band.   The sound absorbing structure according to claim 1, wherein the fixing band has a substantially hat-shaped cross section or a substantially C-shaped cross section.   The sound absorbing structure according to claim 1, wherein the front surface of the support column cover is similar to the appearance of the other surface side of the sound absorbing plate.   The sound absorbing structure according to claim 1, wherein a bolt insertion hole provided at a connecting end portion of the sound absorbing plate is a long hole in the longitudinal direction of the sound absorbing plate.   A protective fence in which a protection beam or a guard rail is supported on a plurality of columns installed at predetermined intervals along a road, and a sound absorbing structure is attached to a lower portion of the guard beam or guard rail, the sound absorbing structure Comprises a sound absorbing plate having a function of absorbing noise, a fixed band connecting the ends of the adjacent sound absorbing plates, and a support cover attached to the fixed band, and the sound absorbing plate has an internal sound absorbing function. A sound-absorbing plate main body that contains the material, and a connecting end portion that protrudes from both ends of the sound-absorbing plate main body in the extending direction of the sound-absorbing plate main body. The fixing band is formed of a member having an opening size that can surround the support fence post, and a flange portion is provided at each end of the fixing band on the opening side. Connecting end of plate and fixing band The flange portion is connected, dorsal said fixing band is in the other surface of the sound absorbing plate, protective fence struts cover is characterized in that attached to the back sides of the fixing band.   The protective fence according to claim 6, wherein connecting end portions of the adjacent sound absorbing plates are connected by the fixed band and the auxiliary band.   The protective fence according to claim 6, wherein the fixing band has a substantially hat-shaped section or a substantially C-shaped section.   The protective fence according to claim 6, wherein the sound absorbing plate is a double-sided sound absorbing plate or a single-sided sound absorbing plate.   The protective fence according to claim 6, wherein the front surface of the support column is similar to the appearance of the other surface of the sound absorbing plate.   The protective fence according to claim 6, wherein a bolt insertion hole provided at a connection end of the sound absorbing plate is a hole that is long in the longitudinal direction of the sound absorbing plate.

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