JP2009299408A - Construction method for acoustic road - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a construction method capable of properly constructing an acoustic road, in a short period, without requiring a long construction period. <P>SOLUTION: Recess formation members 10, having predetermined widths and lengths, are arranged parallel to each other at predetermined intervals in the longitudinal direction L of the road. The recess formation members 10 are buried in an uncured pavement material formed of an asphalt mixture or a concrete. The upper surfaces of the recess formation members 10 are exposed to a pavement road surface 5 formed of the pavement material. After the pavement material is compacted, the recess formation members 10 are removed. Recesses 6 appear at the removed portions. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an acoustic road having a structure in which unevenness for generating a vibration sound heard as a predetermined melody by traffic of a vehicle is provided on a paved road surface, in particular, an acoustic road constructed without cutting the paved road surface. It relates to the construction method.

  An acoustic road is a road that generates a vibration sound that is heard as a predetermined melody when a vehicle passes on the road, and its specific mode is asphalt pavement or concrete pavement, in the transverse direction of the road. A groove (concave portion) extending along the groove is formed, and a plurality of grooves are formed in the longitudinal direction of the road at predetermined intervals with respect to a pitch or the like (for example, Patent Document 1).

  Conventionally, acoustic roads such as those described above have a dedicated construction vehicle on which a cutting device is mounted on a paved road by a predetermined distance, and the cutting device mounted on the construction vehicle at a predetermined stop position is in the width direction of the road. While moving, the single or multiple cutter blades provided in the cutting device are rotated and pressed against the paved road surface, thereby cutting the paved road surface in the transverse direction to form a plurality of grooves in parallel. (For example, Patent Document 2).

Japanese Patent Publication No. 5-9561 Japanese Patent No. 3913761

  However, the method of cutting the paved road surface has problems that the corners of the groove (recess) to be cut out are lost or a large amount of dust is generated during cutting, and additional devices such as blowers and dust collectors are used as dust countermeasures. Therefore, it was difficult to reduce the construction cost.

  In addition, even after the pavement work is completed, it is not possible to immediately shift to the cutting work, and the work must be interrupted until the curing period (0.5 to 2 months) of the paving body such as asphalt concrete or concrete plate has passed. However, it takes two hours and requires a long work period to complete the entire process, and when the construction is resumed, the traffic must be reintroduced after it has been put into service. It was.

  Furthermore, positioning of construction vehicles and cutting equipment is extremely difficult because high accuracy is required, and in order to increase the positioning accuracy, it is essential to introduce expensive and dedicated control equipment. there were. In addition, cutting alone cannot cope with long-term maintenance of road surface wear and deformation, and has a weak point in life cycle cost.

  The present invention has been made in view of the circumstances as described above, and its purpose is not to require a long construction period, but to enable an acoustic road to be suitably constructed in a short period of time, thereby promoting the popularization of acoustic roads. There is.

In order to achieve the above object, the present invention
It is a method of constructing an acoustic road having a structure in which unevenness for generating a vibration sound to be heard as a predetermined melody by passing a vehicle is provided on a paved road surface,
The recess forming members having a predetermined width and length are arranged in parallel at predetermined intervals in the longitudinal direction of the road, and the respective recess forming members are embedded in an uncured pavement material made of asphalt mixture or concrete. A method for constructing an acoustic road is provided, wherein each upper surface of the recess forming member is exposed to a pavement road surface formed by the pavement material, and after the pavement material is compacted, the recess forming member is removed. To do.

  In addition, a filler made of impact-resistant resin, hard rubber, or concrete is injected into the recess that appears when the recess-forming member is removed, and the filler is raised higher than the paved road surface and extends in the transverse direction of the road. And forming a new recess between adjacent projections, or covering the inner surface of the recess appearing by removing the recess forming member with resin or mortar.

In addition, the present invention is a method for constructing an acoustic road having a structure in which unevenness for generating a vibration sound to be heard as a predetermined melody by passing a vehicle is provided on a paved road surface,
Convex-forming members having a predetermined width and length are arranged in parallel at predetermined intervals in the longitudinal direction of the road, and the respective convex-forming members are made into an uncured pavement material made of asphalt mixture or concrete. In addition to embedding, each upper end portion of the convex portion forming member is protruded from the paved road surface formed by the paving material to form a hard convex portion extending in the crossing direction of the road, and a gap between adjacent convex portions is defined as a concave portion. An acoustic road construction method is provided.

  In addition, the inner surface of the concave portion formed between the convex portions is covered with resin or mortar.

  According to the construction method of the present invention, the recess forming members having a predetermined width and length are arranged in parallel at predetermined intervals in the longitudinal direction of the road, and the respective recess forming members are uncured pavement. After embedding in the material and exposing each upper surface from the paved road surface and compacting the paving material, the recess forming member is removed, so in parallel with the paving work, a groove-shaped recess is formed on the paved road surface. Can be formed.

  Therefore, in addition to being able to build an acoustic road in a short period of time, it eliminates the need for dedicated construction vehicles and cutting equipment, so it reduces construction costs and eliminates the generation of dust due to road surface cutting. An acoustic road can be constructed in a favorable working environment without causing discomfort to residents and drivers of vehicles passing nearby.

  Moreover, in the method of injecting a filler made of impact-resistant resin, hard rubber, or concrete into the recess that appears when the recess forming member is removed, the corner of the recess can be prevented from falling off due to deterioration, and the filler. Since a hard convex part extending in the width direction of the road is formed by raising the height higher than the paved road surface, a new groove-shaped concave part is formed between the two while forming a high-strength convex part that can withstand the load of the vehicle. It can be formed, and by changing the groove width (reversing the unevenness), it is possible to facilitate reproduction due to aging deterioration with the effect of increasing the volume at the same pitch, and to reduce the life cycle cost.

  Further, the convex forming members having a predetermined width and length are arranged in parallel at predetermined intervals in the longitudinal direction of the road, and each convex forming member is embedded in an uncured pavement material, and According to the method of forming a hard convex part extending in the transverse direction of the road by projecting each upper end from the paved road surface, a convex part and a groove-shaped concave part sandwiched by the convex part are formed on the paved road surface concurrently with the paving work. can do.

  In addition, in the method of covering the recesses that appear due to the removal of the recess forming member and the inner surface of the recesses formed between the projections with resin or mortar, the corners deteriorate while leaving the recesses as sound generating grooves. This prevents the sound source from losing its shape and prevents the sound source from losing its function, and the vibration sound that is heard as a melody by preventing the diffusion of air that vibrates even on high-performance pavements with voids. I can concentrate.

  Hereinafter, the present invention will be described in detail with reference to the drawings. First, FIG. 1 shows a cross section of an acoustic road according to the present invention. In FIG. 1, L indicates the longitudinal direction (longitudinal direction) of the road, and W indicates the transverse direction. Reference numeral 1 denotes a road bed, on which a pavement 2 is provided. In this example, the pavement 2 is composed of a roadbed 3 formed by leveling crushed stone on the roadbed 1 and an asphalt concrete layer 4 formed on the roadbed 3. The asphalt concrete layer 4 has a two-layer structure of a base layer 4a made of a heated asphalt mixture such as coarse-grained asphalt concrete and a surface layer 4b provided on the base layer 4a. The surface layer 4b is the uppermost layer made of a heated asphalt mixture such as modified or dense-graded asphalt concrete, and the surface of the surface layer 4b is a paved road surface 5 that appears on the ground. The acoustic road is configured by providing a plurality of recesses 6 on the paved road surface 5.

  The recesses 6 are in the form of grooves extending in the transverse direction W of the road, each of which is formed in parallel at a predetermined interval in the longitudinal direction L of the road, and the upper surface between the two adjacent recesses 6 and 6 is a paved road surface. 5 and the same protruding line 7.

  Here, according to the acoustic road, when the vehicle passes on the paved road surface 5, the vibration sound heard as a predetermined melody is related to the width, the internal volume, and the interval (pitch) of the recess 6. Can be generated. Note that the frequency of the generated sound varies depending on the travel speed of the vehicle in addition to the width and interval of the recess 6, but the width and interval of the recess 6 are determined based on the legal speed of the vehicle on the road.

  Next, a construction method for constructing the acoustic road as described above will be described. In FIG. 2, reference numeral 10 denotes a recess forming member serving as a mold material for forming the recess 6. The recess forming member 10 is a long member (rectangular square member in this example) having a predetermined width and length, and wood, a metal square pipe, or the like can be suitably used for this. And this recessed part formation member 10 is arrange | positioned in parallel at the predetermined space | interval at the time of the pavement construction which concerns on the longitudinal direction L of a road as FIG. 2 shows so that each upper surface may be exposed from the pavement surface 5. Embedded in the pavement material (in this example, a surface layer material made of an asphalt mixture) forming the surface layer 4b.

  The recess forming member 10 may be arranged before the surface layer material (asphalt mixture) is paved. However, since the recess forming member 10 becomes an obstacle when paving the surface layer material, the surface layer material is preferably used. After paving, the concave portion forming member 10 is disposed thereon.

  Specifically, after asphalt mixture is spread on the base layer 4a with an unillustrated asphalt spreader or the like, the concave portion forming member 10 is disposed thereon, and preferably, the concave portion forming members 10 are maintained at a specified interval. The recess forming member 10 is pushed into the uncured surface layer material while connecting them by a connecting member described later, and rolling and compacting the surface layer material. Then, when the compaction of the surface layer material is completed, the concave portion forming member 10 whose upper surface is exposed from the paved road surface 5 is removed from the surface layer 4b, and the removed portion extends along the transverse direction W of the road. The groove-shaped recess 6 extending in the direction appears. Since the surface material is firmly compacted, the recess 6 does not lose its shape even when the recess forming member 10 is removed. However, in the long term, the corner may drop due to the load of a passing vehicle. There is concern about being crushed.

  Therefore, as a preferred embodiment shown in FIG. 3, the hard protective layer 6a is formed by covering the inner surface of the recess 6 with resin or mortar. According to this, the shape of the recessed part 6 can be maintained with the initial shape over a long period of time. In place of the protective layer 6a, the grooved steel may be fitted into the recess 6, or the groove forming member 10 may be left in the surface layer 4b without being removed by using the grooved steel. Although it is conceivable, this increases the construction cost.

  Further, as shown in FIG. 4, a filler 8 made of impact-resistant resin, hard rubber, or concrete is injected into the recess 6 that appears when the recess forming member 10 is removed, and the filler 8 is injected from the pavement surface 5. It is also possible to form a hard convex portion 9 that rises higher and extends in the crossing direction of the road. Even in this case, a groove-shaped recess 16 extending in the transverse direction of the road is formed between the two adjacent protrusions 9, 9, and the recess 16 is arranged in parallel at a predetermined interval in the longitudinal direction of the road. Can be formed. In addition, it is preferable to limit the protrusion amount of the convex portion 9 to a height of about several mm so that excessive vibration does not act on the vehicle. Also, as the impact resistant resin as the filler 8, various plastics added with an impact resistance improving agent such as SBR, BR, EPM, EPDM, MBS as well as fiber reinforced plastic (FRP) are suitably used.

  Next, the connecting member will be described. In FIG. 5, 11 is a connecting member, FIG. 5 (a) is a mode in which a through hole 10a for allowing the connecting member 11 to pass through is provided on the side surface of the recess forming member 10, and FIG. 5 (b) is a recess forming member. FIG. 5 (c) shows an embodiment in which a notch portion 10c for fitting the connecting member 11 is formed on the bottom surface of the end portion of the recess forming member 10, and FIG. FIG. 5 (e) (f) is a belt-like member such as heat-resistant hard rubber, heat-resistant hard film, paper or cloth. In this embodiment, a linear member such as a wire is used as the connecting member 11 and the recess forming member 10 is bonded thereto.

  In the embodiment shown in FIGS. 5 (a) and 5 (b), the intersecting portion between the recess forming member 10 and the connecting member 11 is fastened by a screw (not shown). Opened and fixed. 5 (c), the connecting member 11 is fixed to the base layer 4a or the like with an anchor, and the recess forming members 10 can be adjusted to a predetermined interval along the connecting member 11. FIG. 5 shows only one end portion of the recess forming member 10, but the other end portion is also connected by the same connecting member 11. Further, in the embodiment shown in FIGS. 5 (e) and 5 (f), the recess forming members 10 can be adjusted to a predetermined interval along the connecting member 11.

  The recess forming member 10 is held at a predetermined interval by the connecting member 11 when placed on the spread surface material, but the connecting member 11 immediately before embedding the recess forming member 10 in the uncured surface material. It is separated from the recess forming member 10 or removed together with the recess forming member 10 after rolling and compacting the surface layer material.

  Here, the connection of the recess forming member 10 by the connecting member 11 is performed at the site, but the connection of the recess forming member 10 by the connecting member 11 may be carried into the site.

  Moreover, the cross-sectional shape of the recess 6 provided on the paved road surface 5 is not limited to a rectangle, but a trapezoidal shape as shown in FIG. 6A, an arc shape as shown in FIG. 6B, or FIG. V shape etc. which are shown may be sufficient and this can be changed with the external shape of the recessed part formation member 10. FIG.

  Next, FIG. 7 shows a modification of the acoustic road according to the present invention. In addition, the same code | symbol is attached | subjected to the part which is common in the said example, and detailed description is abbreviate | omitted. Here, in the acoustic road as shown in FIG. 7, the convex portion forming members 20 having a predetermined width and length are arranged in parallel at predetermined intervals in the longitudinal direction L of the road. By embedding the forming member 20 in an uncured pavement material (surface layer material forming the surface layer 4b), and projecting each upper end of the formation member 20 from the pavement road surface 5 to form a hard convex portion 20a extending in the transverse direction W of the road Built.

  The convex forming member 20 is arranged and fixed before the surface layer material (asphalt mixture) is paved, and is embedded so as to protrude on the paved surface. In addition, when the convex portion forming member 20 becomes an obstacle when the surface layer material (concrete) is paved, after the surface layer material is paved, the convex portion forming member 20 is embedded and disposed thereon.

  As a concrete good example, after asphalt mixture is spread on the base layer 4a with an unillustrated asphalt spreader or the like, the convex portion forming members 20 are arranged thereon, preferably at intervals defined by the respective convex portion forming members 20. In order to be maintained, they are connected by the connecting member 11 as described above, and the convex portion forming member 20 is pushed into the uncured surface layer material while rolling and compacting the surface layer material. However, in this example, the convex portion forming member 20 is not removed after the surface layer material is compacted, and the upper end portion of the convex portion forming member 20 remains in the surface layer 4b with the convex portion 20a having a height of about several millimeters protruding on the paved road surface 5. Thus, a groove-shaped recess 26 extending along the crossing direction W of the road is provided between the adjacent protrusions 20a. Note that the inner surface of the recess 26 is preferably covered with resin or mortar as in the above example. In addition to the prism-shaped member as shown in FIG. 7, a member having a cross-sectional shape as shown in FIGS.

  As described above, the present invention has been described by taking the case of asphalt pavement as an example. However, the present invention is not limited to asphalt pavement and may be a lithographic pavement in which the asphalt layer 4 is a concrete plate. In this case, instead of the asphalt mixture, A concrete slab (cement concrete) is laid on the surface. Except for this point, the construction method is the same as the above example.

  Further, as shown in FIG. 9, the recesses 6, 16, and 26 may be groove patterns P2 and P3 that are discontinuous in the transverse direction in addition to the groove pattern P1 that is continuous in the transverse direction of the road.

Partial sectional view showing an acoustic road according to the present invention Explanatory drawing showing the construction method of the acoustic road Enlarged cross-sectional view of the recess provided on the paved road surface Enlarged sectional view showing a convex portion formed by injecting a filler into the concave portion Explanatory drawing which shows the connection pattern of the recessed part formation member by a connection member Explanatory drawing which shows the shape pattern of a recessed part The fragmentary sectional view which shows the example of a change of the acoustic road which concerns on this invention Sectional drawing which shows the aspect of a convex part formation member Schematic plan view showing the formation pattern of recesses

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Subgrade 2 Pavement 3 Subbase 4 Asphalt layer 4a Base layer 4b Surface layer 5 Pavement road surface 6 Concave part 7 Convex strip 8 Filling material 9 Convex part 10 Concave formation member 11 Connection member 16 Concave part 20 Convex part formation member 20a Convex part 26 Concave part

Claims (5)

It is a method of constructing an acoustic road having a structure in which unevenness for generating a vibration sound to be heard as a predetermined melody by passing a vehicle is provided on a paved road surface,
The recess forming members having a predetermined width and length are arranged in parallel at predetermined intervals in the longitudinal direction of the road, and the respective recess forming members are embedded in an uncured pavement material made of asphalt mixture or concrete. A method for constructing an acoustic road, comprising exposing each upper surface of the recess forming member to a pavement road surface formed of the pavement material, compacting the pavement material, and then removing the recess forming member.   Injecting a filler made of impact-resistant resin, hard rubber, or concrete into the recess that appears when the recess-forming member is removed, and the bump is raised higher than the paved road surface and extends in the transverse direction of the road. The method for constructing an acoustic road according to claim 1, wherein a new concave portion is formed between adjacent convex portions.   2. The method for constructing an acoustic road according to claim 1, wherein the inner surface of the concave portion that appears by removing the concave portion forming member is covered with resin or mortar. It is a method of constructing an acoustic road having a structure in which unevenness for generating a vibration sound to be heard as a predetermined melody by passing a vehicle is provided on a paved road surface,
Convex-forming members having a predetermined width and length are arranged in parallel at predetermined intervals in the longitudinal direction of the road, and the respective convex-forming members are made into an uncured pavement material made of asphalt mixture or concrete. In addition to embedding, each upper end portion of the convex portion forming member is protruded from the paved road surface formed by the paving material to form a hard convex portion extending in the crossing direction of the road, and a gap between adjacent convex portions is defined as a concave portion. An acoustic road construction method characterized by this.   The method for constructing an acoustic road according to claim 4, wherein the inner surface of the concave portion formed between the convex portions is covered with resin or mortar.

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