JP2002212921A - Noise barrier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a noise barrier excellent in landscape properties, which enables easy adaptation by means of a relatively simple structure even if a geometric line form of road for the installation of a noise barrier or the like is taken as a curved line, enables the easy execution of installation work for a support, and enables an improvement in safety in a collision between vehicles. SOLUTION: The noise barrier 1 is constituted by mounting sound insulation panels 10 among the plural supports 2 and 2 installed at intervals along a boundary between a driveway and a sidewalk or a medial strip of the driveway. A new or existing circular cross-section support serves as the support 2. Paired panel mounting members 3 and 3, disposed in the support 2 in such a manner as to sandwich the support 2 in between, are fixed by a clamping member 4. A side end of the panel 10 is attached to the member 3 with a bolt and a nut 5. A side end of a front plate 11 and that of a backside plate 12 are fitted into each other by a step 18 for the purpose of hiding the support 2 altogether.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a relatively short sound insulating wall (hereinafter referred to as a low sound insulating wall) which is installed along a boundary between a road and a sidewalk or along a median strip of the road. . As other application fields, application to a relatively tall sound insulation wall installed along a roadside zone or a median strip of a roadway, and also to a sound insulation wall installed in other places can be considered.

[0002]

2. Description of the Related Art Conventionally, a low-rise sound insulation wall has been disclosed in
No. 266141 ("Sound insulation wall for city road") has been put to practical use. As shown in FIG. 4, the noise insulation wall has pillars 50 made of a rectangular steel pipe installed at predetermined intervals, and the pillars 5 are provided between adjacent pillars 50, 50.
The sound insulation panel 51 having the concave portions 52 and 53 at the side end portions capable of accommodating the recesses
3 is fixed to the support 50 by bolts 54 (hereinafter, referred to as
Conventional low-rise sound insulation wall).

In addition, Japanese Patent Application Laid-Open No. 10-338913 ("Protective fence having soundproofing function") discloses a protective fence comprising a column 60 having a circular cross section and a protective member 61 such as corrugation, as shown in FIG. A sound insulation panel 62 is disposed below the protection member 61, and the sound insulation panel 62 is fixed to a panel gusset 64 fixed by a steel band 63 attached to a support column 60.
Is fixed by bolts 65 (hereinafter referred to as a conventional low-rise sound insulation wall).

On the other hand, a relatively tall sound insulation wall installed along a roadside zone or a median strip of a roadway has a pillar with an H.
It is common to use a shaped steel and drop a sound insulation panel between flanges of the H-shaped steel.

[0005]

The conventional low-layer sound insulating wall has the following problems. (1) The cross section of the support is rectangular, and the sound insulation panel provided with a concave portion that fits this shape is fitted into the square support, so the road where the sound insulation wall is installed has a curved line, and the sound insulation wall is If it is necessary to bend, the cross-sectional shape of the pillar or the side end shape of the sound insulating panel will be significantly changed, which will increase the manufacturing cost. (2) Since the cross section of the column is rectangular, if the column is rotated and fixed in the installation work of the column, a problem occurs when the sound insulation panel is installed. For this reason, high installation accuracy is required at the time of installation of a support | pillar, and construction becomes complicated. (3) When a vehicle collides with the sound insulation wall, a considerable amount of the energy acts on the connecting bolt between the support and the sound insulation panel. For this reason, it is conceivable that the bolt is broken at the time of the collision, the sound insulation panel comes off the support, and the vehicle deviates to the sidewalk or the oncoming lane.

[0006] In the case of the conventional low-rise sound insulation wall, there are the following problems. (1) The existing guardrails are exposed above the sound insulation panels, and there is a problem with the landscape. (2) The mounting structure is complicated because the sound insulation panel is mounted on the support using the steel band and the panel gusset.

[0007] The conventional relatively tall sound insulation wall has the following problems. (1) Since the sound insulation panel is dropped into the pillar made of H-section steel, the pillar material appears between the sound insulation panels.
There is a problem with the landscape. In addition, there is a sound insulating wall of a pillar concealing type that covers the flange portion of the H-shaped steel to some extent, but cannot completely hide the pillar material, and cannot maintain the continuity of the sound insulating panel, which leads to a decrease in landscape.

The present invention has been made to solve the above-mentioned problems of the prior art, and can easily cope with a relatively simple structure even if the road line or the like on which the sound insulation wall is installed is curved. It is another object of the present invention to provide a sound insulation wall which can easily perform the installation work of the support pillar, can further improve the safety at the time of collision of the vehicle, and has an excellent scenery.

[0009]

According to a first aspect of the present invention, there is provided a sound insulating wall in which a sound insulating panel is mounted between a plurality of columns installed at intervals. A pair of panel mounting members arranged so as to sandwich the column between the columns, and fixed with fastening members (bolts, nuts, etc.), and a sound insulation panel is mounted on the panel mounting member. It is assumed that. The sound insulation wall of the present invention may be a relatively short sound insulation wall installed along the boundary between the roadway and the sidewalk or along the median strip of the roadway, or a relatively low noise barrier installed along the roadside zone or median strip of the roadway. It is applied to high sound insulation walls and also sound insulation walls installed in other places.

According to the first aspect of the present invention, since the support is a circular steel pipe or the like, the road alignment on which the sound insulating wall is installed is curved, and even if it becomes necessary to bend the sound insulating wall in plan view, a pair of panel mountings fixed to the support are used. By installing the member at an angle by adjusting the tightening member and slightly bending the plate portion at the connecting portion between the sound insulation panels, it is possible to easily cope with this without increasing the cost. In addition, since the pillar is circular in cross section, it can be installed without worrying about the rotation of the pillar when installing the pillar, and furthermore, the method of mounting the guard fence such as guard rails, which has many achievements, can be applied, so streamlining the construction Is also planned. Further, when a vehicle collides with the sound insulating wall, a pair of panel mounting members sandwiched and fixed to the support via the fastening member rotate around the support while receiving a frictional force, thereby absorbing the collision energy, and the sound insulating panel is The force acting on the mounting bolt is reduced.
Therefore, the risk that the mounting bolt is broken and the sound insulation panel comes off from the support, and the vehicle deviates to the sidewalk or the oncoming lane is reduced. The outer surface of the sound insulation panel can be coated with a color that takes into account the surrounding scenery, and can be coated with antifouling paint or photocatalyst, but the presence or absence of the paint and the content of the paint are not limited.

The sound insulation wall according to a second aspect of the present invention is the sound insulation wall according to the first aspect, wherein the pillar having a circular cross section uses an existing pillar from which an existing protection member is removed. is there. In other words, if there are guard fences such as guard rails, guard cables, guard pipes, etc. already at the sound insulation wall installation location, use the existing support fences, etc., from which the protection members such as corrugations, cables, pipes, etc. have been removed, as sound insulation wall supports I do.

According to the second aspect of the present invention, when a sound insulation wall is installed in a place where a protection fence is already present, the sound insulation wall is installed in a conventional sound insulation wall installation work by effectively using only the support of the existing protection fence. This eliminates the need for removing existing columns and installing new columns, greatly reducing construction costs and shortening the construction period. The present invention can be applied to other than the protection fence as long as there is a column such as a crossing prevention fence.

According to a third aspect of the present invention, there is provided a sound insulating wall according to the first or second aspect, wherein the sound insulating panel comprises:
A sound absorbing material is built in between a pair of panel plates, at least one of which is a perforated plate (such as a punching metal), and a pillar is sandwiched and hidden by the pair of panel plates. The sound insulation panel is composed of, for example, a front plate, a back plate, a side plate, an upper plate, and a lower plate. Is formed, and a storage space for the support is formed by two concave portions of the adjacent sound insulation panel.

According to the third aspect of the present invention, a sound absorbing material is provided over substantially the entire surface of the sound insulating panel, and a sound absorbing function is added in addition to the sound insulating function. In addition, the columns are completely hidden by the pair of panel boards, and the landscape is improved by the continuous sound insulation panels.

According to a fourth aspect of the present invention, in the sound insulating wall, a sound insulating panel is mounted between a plurality of columns provided at intervals, and the column is provided with an existing protective member. Using a column having a circular cross section (such as a circular steel pipe), a pair of panel mounting members arranged so as to sandwich the column in a portion of the existing column where the protective member is not mounted are tightened by a tightening member (such as a bolt and a nut). The sound insulating panel is fixed to the panel mounting member so as to cover the existing support and the existing protective member. That is, the present invention is applied to a case where a sound insulation wall is installed on a protective fence such as a guard rail, a guard cable, a guard pipe, or the like which already exists at a sound insulation wall installation location.

According to the fourth aspect of the present invention, when the sound insulation wall is installed in a place where the protection fence is already present, the sound insulation wall is provided so as to cover all the existing protection members such as corrugations, cables, and pipes. All existing guard fences that have been removed can be used effectively. This will reduce the cost of removing existing protective fences and eliminate the need for new support pole installation work. In addition, since existing protection members such as corrugations, cables, pipes, etc. are built in, the strength of preventing vehicle departure to sidewalks and oncoming lanes etc. is already secured, so that the vehicle hits the sound insulation panel itself that covers the existing protection members. It is not necessary to impart strength to the panel material, and the manufacturing cost can be reduced by making the panel material thinner, simpler and lighter. The present invention can be applied to other than the protection fence as long as there is a column such as a crossing prevention fence.

According to a fifth aspect of the present invention, there is provided the sound insulating wall according to the fourth aspect, wherein the sound insulating panel is an existing protective member between a pair of panel plates, at least one of which is a perforated plate (such as a punched metal). The sound absorbing material is built in all or a part of the range excluding the above. This is mainly applied when the existing protective fence or the like is a guardrail, and a sound absorbing material is provided below corrugations. The sound absorbing material is provided, for example, with a box-shaped body having a perforated plate on one side of one of a pair of panel plates and housed in the inside.

If it is difficult to install the sound insulation wall from the corrugation of the existing guardrail so as to protrude to the side of the roadway to secure the width of the roadway, the sound absorbing material must be installed on the sidewalk side or the centerline side of the median strip relative to the corrugation. Must. At this time, since the sound wave is reflected at the corrugation portion, the cost can be reduced by arranging the sound absorbing material other than the corrugation portion in consideration of the effective range of the sound absorbing material. In this case, the sound absorption performance is reduced, but the sound insulation wall installed between the pedestrian roads in the city area is greatly affected by height restrictions and openings for roadside access to vehicles, so the sound insulation wall itself has high acoustic performance. Is often not required, and sound insulation performance is often regarded as more important than sound absorption performance. Therefore, it is considered that reduction in sound absorption performance is not a problem depending on the installation location.

According to a sixth aspect of the present invention, in the sound insulating wall according to the first, second, third, fourth, or fifth aspect, the panel mounting member has a fastening portion and a panel mounting portion on both sides of a groove abutting on the support. The groove is formed as an arc-shaped groove. The pair of panel mounting members may be configured to hold the column from the panel connection direction, or may be configured to clamp the column from a direction perpendicular to the panel connection direction.

According to the sixth aspect of the present invention, by forming the groove of the panel mounting member with which the support comes into contact with an arc shape, the contact area between the support and the panel mounting member is increased, and the degree of fixing of the panel mounting member is improved. The amount of energy absorbed at the time of a vehicle collision also increases, and the safety at the time of a collision also improves. In addition, irregularities are provided on the inner surface of the groove of the panel mounting member for the purpose of improving the frictional force between the column and the panel mounting member, and between the column and the groove of the panel mounting member for the purpose of absorbing impact energy. A buffer member such as rubber may be interposed.

According to a seventh aspect of the present invention, in the sound insulating wall according to the first, second, third, fourth, fifth, or sixth aspect, the sound insulating wall is provided at one of the joining ends of the sound insulating panel in the panel connecting direction. It is characterized in that a step at which the other joint end can be fitted is formed.

In the present invention, the support is completely concealed and the connection between the sound insulation panels is made flatter than in the conventional technology in which an H-shaped steel is used for the support and the sound insulation panel is dropped therein. Therefore, the landscape can be significantly improved, and the plate member at the end of the sound insulation panel can be prevented from being turned up. In addition, as a method of forming the step to be applied to the plate member, bending of the plate, overlapping of the plate, and the like can be considered, but the method is not limited.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. This embodiment is an example in which the present invention is applied to a relatively short sound insulation wall installed along a boundary between a roadway and a sidewalk or along a median strip of the roadway.

FIG. 1 is a front view and a sectional view showing a first basic embodiment of a sound insulating wall according to the present invention. In FIG. 1, a sound insulation wall 1 according to the present invention has a pair of panel mounting members 3, 3 arranged so as to sandwich a column 2 made of a circular steel pipe, and the panel mounting members 3, 3 are fastened by bolts and nuts. 4 and fixed to the column 2, the side ends of the sound insulation panel 10 adjacent to the panel mounting members 3 and 3 are fixed with bolts and nuts 5, respectively, and the column 2 is fixed at the side end of the sound insulation panel 10. It is intended to be hidden.

The support 2 may be a new one, or an existing support from which the protection members (corrugation, cables, etc.) of the existing protection fences (guard rails, guard cables, etc.) are removed, or an existing support from which the existing cross protection fences are removed. May be used. In the case of using the existing pillars, the removal of the existing pillars and the installation work of the new pillars become unnecessary, and the construction cost and the construction period can be reduced.

The panel mounting member 3 has a cross-sectional shape in which a substantially L-shaped tightening portion 3b and a panel mounting portion 3c are integrally provided on both sides of a central groove 3a. Sandwiched from both sides in the longitudinal direction of the road), the opposite fastening portions 3b, 3b are fastened by the fastening member 4, and the ends of the panel plates 11, 12 (described later) of the sound insulation panel 10 are attached to the outer surface of the panel mounting portion 3c parallel to the panel connecting direction. The parts are attached so that they can be fixed with bolts and nuts 5.

The groove 3a in contact with the outer surface of the column 2 may be a triangular groove or the like. However, by forming the groove 3a in an arc shape corresponding to the outer diameter of the column 2, the degree of fixing to the column 2 can be increased. In this case, the degree of fixation can be further improved by providing irregularities on the inner surface of the arc of the groove 3a.
In addition, the column 2 and the groove 3a are used to absorb impact energy.
And a cushioning member such as rubber may be interposed between them.

In the illustrated example, the column 2 is sandwiched by the pair of panel mounting members 3 in the panel connecting direction. However, the present invention is not limited to this, and the column 2 is clamped in a direction perpendicular to the panel connecting direction. It may be configured.

The sound insulation panel 10 has a front panel 11, a rear panel 12, side panels 13 connecting the front panel and the rear panel at the side ends, and a cross section of a U-shape or the like. A sound absorbing material 16 is built in a box-shaped body including a face plate 14 and a lower surface plate 15. This sound insulation panel 10
Is set to a height that can completely cover the column 2. The type and arrangement of the sound absorbing material 16 are not limited. Further, a punching hole 17 and the like are formed in the front plate 11. Note that a glass cloth or the like may be attached to the inside of the front plate 11 in order to prevent rainwater or the like from entering through the punching holes 17.

The shape of the joint between the sound insulation panels is such that a step 18 is provided on one side end of the front plate 11 and the back plate 12 so as to be deflected inward in parallel, and the other side end is fitted to the step 18. The panel panels that are adjacent to each other are flush with each other. Thereby, continuity of the sound insulation panel is achieved, and the scenery is improved. Further, the outer surfaces of the front plate 11, the rear plate 12, and the upper plate 14 may be provided with a fluorine laminate or the like so as to consider the scenery. It is also conceivable to apply an antifouling paint or a photocatalytic coating in order to suppress stains.

FIG. 2 is a cross-sectional view showing an example in which the first embodiment is applied to different places, and assumes a case where the road line on which the sound insulation wall is installed is curved. In FIG. 2, adjacent sound insulation panels 10 and 10 are arranged so as to be bent at the installation portion of the column 2 in accordance with the curved line of the road, and the pair of panel mounting members 3 and 3 are adjusted to the bending angle. It is possible to cope with the situation by fastening inclining. Further, the connecting portion between the front plate 11 and the rear plate 12 may be slightly bent.

FIG. 3 is a front view and a sectional view showing a second embodiment as a modification of the first embodiment. FIG. 3 shows a case in which a guardrail already exists at a place where the sound insulation wall 1 is to be installed, and a pair of panels sandwiching the pillar 2 of the guardrail at a position below the corrugation (corrugated beam) 20 of the existing guardrail. Mounting members 3, 3
Place. In this case, the panel mounting member 3 is provided with a corrugation 20 which is mounted on the front surface of the column 2 with a mounting bracket 21.
The shape of the panel mounting portion 3c protruding forward from the front surface is used.

Next, such panel mounting members 3 and 3 are fixed to the column 2 by a tightening member 4 composed of bolts.
By fixing the sound insulation panel 10 to the fixed panel mounting member 3 with the bolts and nuts 5, the sound insulation wall 1 that completely covers the existing columns 2 and the existing corrugations 20 is formed.

The sound absorbing material 16 built in the sound insulating panel 10
Are housed in a box-shaped body 30 provided at a lower part in the sound insulation panel 10, and are arranged only below the corrugation 20. The box-shaped body 30 is composed of an upper plate 31, a lower plate 32, side plates 33, 33 attached to the inner surface of the back plate 12, and a perforated plate 34 such as an expanded metal covering these front openings. The sound absorbing material 16 can be arranged at the same time as the mounting. Note that the box 30 can be attached to the front plate 11. The type of the sound absorbing material 16 is not limited.

In FIG. 3, the front plate 11 is mounted on the panel mounting member 3 with only four bolts / nuts 5 per support column. In the embodiment of FIGS. 1 and 2,
The front plate 11 and the rear plate 12 are connected by the side plate 13 and the lower plate 15, but in this embodiment, FIG.
Not connected as shown in As described above, in the present embodiment, the mounting strength of the sound insulating panel 10 to the support pillar 2 and the strength of the sound insulating panel 10 itself are smaller than those in the embodiments of FIGS. This is because the vehicle departure prevention strength is already secured by the built-in guardrail,
This is because there is no problem even if 1 is simply attached.

Further, by adopting such a structure, the sound insulation panel 10 can be easily attached to the column 2 even if the corrugation 20 exists. The front plate 1
In 1, if a higher degree of fixing is required, the corrugation 20 and the front plate 11 may be fixed using bolts or the like. The upper surface plate 14 has a U-shaped cross section or the like. After the front plate 11 and the rear plate 12 are respectively mounted, they are mounted on the site so as to cover them from above.

Although FIG. 3 shows a case where a guard rail is used as an existing guard fence, the present invention is not limited to this. Other guard fences having guard cables, guard pipes, etc., or pillars such as crossing prevention fences are provided. Any other format may be used. In addition, although an example in which the present invention is applied to a relatively short sound insulating wall is shown, the structure of the present invention can be applied to a relatively tall sound insulating wall.

[0038]

(1) Since the support has a structure in which a circular steel pipe or the like having a circular cross section is used, and a pair of panel mounting members is sandwiched and fixed to the support by a fastening member, the road on which the sound insulation wall is installed is provided. Can be easily handled by arranging the panel mounting member to be fixed to the support column at an angle, even if the line shape is curved.

(2) The use of pillars having a circular cross section allows the pillars to be installed without worrying about the rotation of the pillars during the installation work. In addition, the pillars of the guard fences such as guardrails, which have been streamlined with many achievements, have been streamlined. The method can be applied and the construction becomes easy.

(3) When a vehicle collides with the sound insulating wall, the panel mounting member fixed to the support rotates around the support while receiving a frictional force, so that the collision energy acting on the mounting bolts of the sound insulating panel is reduced, and the sound insulating is achieved. The risk of the panel coming off the support can be avoided. Therefore, safety against a vehicle departure at the time of a collision is improved.

(4) The strut or the strut and the protection member can be covered with a relatively simple configuration, so that the landscape can be improved. (5) When installing a sound insulation wall in a place where a guard fence such as a guard rail exists, the pillars of the guard fence or the guard fence itself can be used effectively, thereby reducing construction costs and shortening the construction period.

(6) By adopting a shape in which the plate members are overlapped and fitted as the shape of the connecting portion between the sound insulating panels, the struts are completely hidden and the continuity of the sound insulating panel is achieved. Excellent landscape is obtained.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of a sound insulating wall according to the present invention, wherein (a) is a front view and (b) is a cross-sectional view.

FIG. 2 is a cross-sectional view showing an example in which a sound insulating wall of FIG.

FIGS. 3A and 3B show a second embodiment of the sound insulation wall of the present invention, wherein FIG. 3A is a front view and FIG. 3B is a cross-sectional view.

4A and 4B show an example of a structure of a conventional low-rise sound insulation wall, wherein FIG. 4A is an exploded perspective view, and FIG.

5A and 5B show another example of the structure of the conventional low-layer sound insulation wall, wherein FIG. 5A is a front view, and FIG. 5B is a cross-sectional view of a pillar portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Sound insulation wall 2 ... Prop 3 ... Panel mounting member 3a ... Groove 3b ... Tightening part 3c ... Panel mounting part 4 ... Tightening member 5 ... Bolt / nut 10 ... Sound insulation panel 11 ... Front plate 12 ... Back plate 13 ... Side plate 14 ... Top plate 15 ... Bottom plate 16 ... Sound absorbing material 17 ... Punching hole 18 ... Step 20 ... Corrugation (corrugated section beam) 21 ... Mounting fitting 30 ... Box-shaped body for storing sound absorbing material 31 ... Upper plate for storing sound absorbing material 32 ... Lower plate for storing sound absorbing material 33 ... Side plate for storing sound absorbing material 34 ... Perforated plate for storing sound absorbing material (expanded metal etc.)

Claims (7)

[Claims] 1. A sound insulation wall comprising a plurality of columns provided with a sound insulating panel between columns, wherein said columns have a circular cross section, and a pair of panel mounting members arranged so as to sandwich said columns between said columns. Fixed with a fastening member,
A sound insulation wall comprising a sound insulation panel attached to the panel attachment member. 2. The sound insulation wall according to claim 1, wherein the support having a circular cross section uses an existing support from which an existing protection member is removed. 3. The sound insulating wall according to claim 1, wherein the sound insulating panel has a sound absorbing material built in between a pair of panel plates, at least one of which is a perforated plate, and a strut is sandwiched between the pair of panel plates. A sound barrier characterized by being hidden. 4. A sound insulating wall comprising a sound insulating panel attached between a plurality of columns installed at intervals, wherein
Utilizing an existing column having a circular cross-section provided with an existing protection member, a pair of panel mounting members arranged so as to sandwich the column in a portion where the protection member of the existing column is not attached by a fastening member. A sound insulation wall, wherein the sound insulation wall is fixed and attached to the panel attachment member so as to cover an existing support and an existing protection member. 5. The sound insulating wall according to claim 4, wherein the sound insulating panel has a sound absorbing material incorporated in all or a part of a range excluding an existing protective member between a pair of panel plates at least one of which is a perforated plate. A sound-insulating wall, characterized by: 6. The sound insulation wall according to claim 1, wherein the panel mounting member is provided with a fastening portion and a panel mounting portion integrally provided on both sides of a groove portion abutting on a support, and the groove portion is provided. Is a sound-insulating wall characterized by an arc-shaped groove. 7. The sound insulation wall according to claim 1, wherein one of the connection ends in the panel connection direction of the panel board of the sound insulation panel can be fitted with the other connection end. A sound insulating wall having a step formed therein.