JP4400799B2 - Absorption method of road traffic vibration propagating on the ground surface - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention mainly relates to a method for absorbing road traffic vibration that propagates through a ground surface layer that prevents vibration generated by vehicles traveling on a road from propagating to neighboring houses.
[0002]
[Prior art]
In recent years, ground vibration caused by traveling of automobiles on roads, so-called road traffic vibration, has been highlighted as one of vibration pollution. Road traffic vibrations are mainly caused by the impact load of automobiles on the unevenness of the road surface, and there are cases where impacts due to joints or steps such as highway and bridge entry are propagated through bridge piers. Yes, the generated vibration propagates while attenuating the ground and reaches the building and the people in it. Vibration is not just a physical effect on buildings, but when a large vibration is applied to a person, it has a psychological effect and has a significant impact on health.
[0003]
As measures against road traffic vibration, measures such as making the road structure itself a roadbed structure where vibrations are difficult to propagate, such as drainage pavement with excellent water permeability, are also taken. For this, measures such as embedding a foam of a thermoplastic resin are taken. As one of such measures, for example, there is a “vibration isolation wall material” described in Japanese Utility Model Publication No. 64-443. This anti-vibration wall material “is formed by laminating a polyester resin or a reinforced plastic on at least both surfaces of a thermoplastic resin foam to provide a cover layer”. The cover layer serves as a waterproof layer for the foam and prevents absorption of moisture in the soil. In this way, the vibration-proofing effect can be ensured for a long time without losing the vibration-proofing function of the foam.
[0004]
[Problems to be solved by the invention]
However, although it is possible to obtain a certain anti-vibration effect against vibrations propagating through the ground among road traffic vibrations, it is not always necessary for vibrations propagating through relatively shallow parts such as the road surface layer. It was not a sufficient measure. The present invention has been made in view of the present situation, and provides a method of absorbing road traffic vibration that propagates through the ground surface layer, which is a relatively shallow portion of the roadbed.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is configured as follows. In other words, a method for absorbing road traffic vibrations propagating on the ground surface layer is to place a vibration absorber formed by laminating rubber or plastics and foam on the outer surface side of the side groove provided on the road shoulder. Features. The vibration absorber may be disposed so as to wrap the entire outer surface side of the side groove, or the vibration absorber may be disposed in an L shape on the surface opposite to the bottom surface of the side groove and the road side. It is also possible to arrange the vibration absorber on the side surface of the side groove on the road side.
[0006]
Also, the method for absorbing road traffic vibration propagating through the ground surface layer according to the present invention is a vibration absorber formed by forming rubber or plastics into a rod-like body and embedding the rod-like body in a foam material of a plate-like body. The vibration absorber is arranged on the outer surface side of the side groove provided on the shoulder of the road. It is preferable to arrange the rod-shaped body so as to be positioned at the corners of the side grooves. The vibration absorber is disposed in an L shape on the bottom surface of the side groove and the surface on the road side, and the rod-shaped body is disposed at the corner of the side groove, or the vibration absorber is cut on the bottom surface side of the side groove. In addition, the rod-shaped body may be disposed so as to be positioned at the corner of the side groove.
[0007]
Further, the side groove may be a U-shaped side groove, an L-shaped side groove, or a circular side groove.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings. First, FIG. 1 shows a first embodiment of a vibration absorber according to the present invention, and is a cross-sectional view of a vibration absorber X formed by laminating a rubber or plastics plate material and a foam material. In FIG. 1, 1 is rubber or plastics, 2 is a foam material, and 3 is a coating layer made of synthetic resin. The rubber or plastics 1 is a solid body and is integrally laminated so as to be sandwiched between the foamed materials 2, and the covering layer 3 is integrally provided on the outer surface of the foamed material 2. The coating layer 3 can be provided by any means such as resin coating on the foam material 2, bonding a sheet, or laminating the sheet simultaneously with the molding of the foam material 2.
[0009]
The rubber or plastics 1 and the foamed material 2 are laminated, but the rubber or plastics 1 is not limited to one layer, and two or more layers may be laminated. When two or more layers of rubber or plastics 1 are laminated, they are laminated alternately with the foam material 2 so that the foam material 2 is located on both outer surface sides. The coating layer 3 can be omitted as appropriate.
[0010]
Various known materials can be used for the rubber or plastics 1 and the foam material 2. For rubber, for example, natural rubber, isoprene rubber, butadiene rubber, styrene butadiene rubber, butyl rubber, ethylene propylene rubber, chloroprene rubber, nitrile rubber, acrylic rubber, cast urethane, etc., all used for construction Rubber can be used. Plastics include, for example, all TPEs such as styrene TPE, olefin TPE, vinyl chloride TPE, urethane TPE, polyester TPE, polyamide TPE, phenol / formaldehyde resin, urea resin, melamine / formaldehyde resin. Thermosetting resins such as epoxy resins, vinyl resins, chlorinated polyethylene resins, polystyrene resins, polyethylene resins, polypropylene resins, polyacetal resins, acrylic resins, nylon resins, etc. it can.
[0011]
Organic polymers such as rubber, TPE, thermosetting resin and thermoplastic resin can be used singly or in combination of two or more, and used as a composite material mixed with fibers, inorganic fillers, etc. May be. Fibers include natural fibers such as plant fibers, animal fibers and mineral fibers, organic fibers (regenerated artificial fibers, semi-synthetic fibers, synthetic fibers), inorganic fibers (metal fibers, carbon fibers, silica fibers, boron) Fiber). As the inorganic filler, carbon black, zinc oxide, magnesium oxide, lead oxide and other metal oxides, metal powder, ceramics, and the like can be used. The fibers can be mixed as short fibers, and one or more inorganic fillers can be mixed in a powder state.
[0012]
The plate-like rubber or plastics 1 may be embedded with a metal plate, a wire mesh, or the like for reinforcement. Furthermore, when carbon black, metal oxide, metal powder, ceramics are mixed in the rubber or plastics 1 of the plate-like body, the electrical resistance value, dielectric constant, specific gravity, etc. can be adjusted, and vibration energy can be converted into thermal energy. The vibration absorber X can be converted efficiently.
[0013]
FIG. 2 shows a second embodiment of the vibration absorber according to the present invention. Contrary to the first embodiment, the vibration absorber Y is formed by integrating a foam material 2 between rubber or plastics 1 of a plate-like body. It is formed sandwiched between. When the rubber or plastics 1 is disposed on both outer surface sides of the foam material 2 as in this embodiment, the coating layer 3 in the first embodiment can be omitted. Also in this embodiment, the materials used and the combinations thereof are the same as those in the first embodiment.
[0014]
In the vibration absorber Y, the foam material 2 is not limited to one layer and may be two or more layers. When two or more layers of the foam material 2 are laminated, they are alternately laminated with the rubber or plastics 1 so that the rubber or plastics 1 is positioned on both outer surface sides.
[0015]
FIG. 3 shows a third embodiment of the vibration absorber according to the present invention. The vibration absorber Z is formed by forming rubber or plastics 1A into a rod-like body instead of a plate-like body, and all or part of the foam material 2A. It is formed by burying. Two or more rubbers or plastics 1A may be disposed at an appropriate interval . For example, as shown in FIG. 3, when part of the rubber or plastics 1A is embedded, What is necessary is just to embed so that it may be exposed. Further, the installation direction when actually installed may be perpendicular or parallel to the ground. The materials used for the rubber or plastics 1A and the foamed material 2A in this embodiment are the same as those in the above embodiment, and the rubber or plastics 1A includes rubber, TPE, thermosetting resin, thermoplastic resin, and the like. One type or a combination of two or more types can be used, and further, it may be used as a composite material mixed with fibers, inorganic fillers, and the like. Moreover, it is good also as a vibration absorber which mixes the metal powder and ceramics which are inorganic type fillers, and converts vibration energy into heat energy. When metal powder or ceramics is mixed, a vibration absorption effect higher than that of a single rubber or plastic can be obtained.
[0016]
In the above embodiment, when a plurality of layers of rubber or plastics 1 are provided, the material is not necessarily the same, but may be formed of a different material, and the shape may be different. For example, when the rubber or plastics 1 has a two-layer structure and the materials are different, the first layer is a plate or sheet rubber or plastics 1 and the second layer is the plate or sheet rubber or plastic. It is good also as plate-like or sheet-like rubber or plastics mixed with ceramics.
[0017]
In the case of different shapes, as shown in FIG. 4, a so-called honeycomb-structured rubber or plastics 1a having a continuous chamber in which the front and back surfaces are alternately opened in the first layer is formed, and the second layer is plate-shaped. Or it is good also as sheet-like rubber or plastics 1b. In any case, the material constituting the rubber or plastics 1 can be arbitrarily determined from the above examples, and the shape thereof is not particularly limited. Therefore, in the case of a two-layer structure, materials and shapes arbitrarily selected in each layer can be combined.
[0018]
FIG. 5 and the following are cross-sectional views showing an embodiment of a method for absorbing road traffic vibration propagating through the ground surface layer in which the vibration absorber is disposed on the outer surface side of a gutter provided on the road shoulder . The present invention absorbs vibrations propagating through a relatively shallow portion such as the surface of the road surface rather than vibrations propagating through the ground in road traffic vibrations, and reduces the impact on houses and people. It is about to try. Therefore, it is proposed to arrange it integrally with a gutter that forms a boundary with the road. 5-7 is sectional drawing which has arrange | positioned the vibration absorber X of 1st embodiment.
[0019]
Figure 5 is provided with a U-shaped groove 20 in the shoulder forming the boundary between the road 10 and the sidewalk or residential 11 shows an embodiment which is disposed a vibration absorbing member X on the entire outer surface of the U-shaped groove 20. The U-shaped side groove 20 is provided with a lid 22 at the upper end of a U-shaped block main body 21 and is made of reinforced concrete. Vibration absorber X is sand filled in the outer surface side front surface of the U-shaped block body 21, gravel, are disposed through the natural aggregate 23 equal Wari ishi. The vibration absorber X is formed in a U shape and wrapped like the U-shaped block main body 21, and a surface protection layer 24 is provided on the exposed surface at the upper end. The surface protective layer 24 can be provided by applying a known inorganic paint or organic paint, and can have weather resistance and fire resistance.
[0020]
6, in the embodiment in FIG. 5, the vibration absorber X without providing the entire outer surface of the U-shaped groove 20, showing an embodiment in which the L-shaped removing road 10 side. Accordingly, the same components are denoted by the same reference numerals and the description thereof is omitted. The same applies to the following description. Also in this embodiment, on the outer surface side of the U-shaped block body 21 and natural aggregate 23 is filled, L-shaped vibration absorbing member X is provided through the natural aggregate 23. Incidentally, FIGS. 5 and 6 embodiment, the natural aggregate 23 vibration absorber X is omitted or may be disposed directly in contact with the outer surface side of the U-shaped block body 21.
[0021]
In FIG. 7, the L-shaped vibration absorber X is provided along the side surface of the U-shaped block main body 21 on the road 10 side, and the bottom end portion of the L-shaped vibration absorber X is provided in the direction of the road 10. Is the case. In the illustrated embodiment, the L-shaped vibration absorber X is brought into contact with the U-shaped block main body 21 without using natural aggregate, but may be provided through natural aggregate. Further, contrary to the above-described embodiment, the vibration absorber X is arranged along the side surface of the U-shaped block main body 21 on the sidewalk or the residential land 11 side, and the bottom end of the L-shaped vibration absorber X is disposed on the sidewalk or residential land 11. You may turn it in the direction. Further, the vibration absorber X may be a straight plate-like body and provided on only one of the side surfaces of the U-shaped block main body 21.
[0022]
FIG. 8 shows an embodiment in which the vibration absorber Z shown in FIG. 3 is disposed in the U-shaped side groove 20, and corresponds to the embodiment of FIG. In this embodiment, the vibration absorber Z is formed of a foam material 2A in a U shape, and rubber or plastics 1A is disposed inside the corners. A surface protective layer 24 is provided on the exposed surface at the upper end of the foam 2A. The rubber or plastic 1A may be disposed on the side surface of the U-shaped block main body 21 or may be disposed on both the side surface and the corner.
[0023]
9, without providing the entire outer surface of the U-shaped groove 20 of the vibration absorber Z in the embodiment in FIG. 8 shows an embodiment in the case of forming the removed pavement or land 11 side L-shape FIG. 10 shows an embodiment in a state in which the center portion of the bottom portion is cut out and the L-shaped vibration absorber Z is faced to face in the embodiment in FIG. 9 and 10, the vibration absorber Z is provided so that the bottom end of the L-shaped vibration absorber Z is directed toward the road 10, the sidewalk, or the residential land 11 as shown in FIG. 7. Also good.
[0024]
In the above embodiment, the vibration absorbers X and Z are shown. However, it is natural that the vibration absorber Y can be formed in the same manner.
[0025]
FIGS. 11-13 shows the form at the time of implementing to an L-shaped side groove. The embodiment of the U-shaped side groove can also be applied to the L-shaped side groove. L-shaped groove 25 is provided in the shoulder forming the boundary between the road 10 and the sidewalk or residential 11, 11, the embodiments were provided with vibration absorbing member X on the entire outer surface of the L-shaped groove 25 shown, Figure 12 shows an embodiment which is disposed a vibration absorbing member Y formed in an L-shape by cutting the road 10 side, FIG. 13, the vibration absorber entire outer surface of the L-shaped groove 25 An embodiment in which Z is arranged is shown.
[0026]
Of course, the L-shaped side groove can be variously modified and applied as in the embodiment of the U-shaped side groove. Moreover, although the U-shaped side groove and the L-shaped side groove have been described for the embodiment of the method for absorbing the road traffic vibration propagating on the ground surface layer, it can be applied to circular side grooves and other known side grooves. is there.
[0027]
The road traffic vibration absorbing method propagating through the ground surface layer having the above-described configuration can cope with not only road traffic vibration generated when the vehicle is traveling, but also vibration generated during road construction. In addition, it is possible to prevent vibration generated by impacts caused by seams or steps in a highway or a bridge entry portion and the like propagating through a bridge pier. In addition, by providing it in the vicinity of a factory where vibrations are generated, propagation of vibrations to neighboring houses can be prevented or reduced. In particular, it is effective in preventing vibrations that propagate through a relatively shallow surface layer of the ground.
[0028]
【The invention's effect】
The road traffic vibration absorbing method propagating through the ground surface layer according to the present invention absorbs the vibration propagating through the surface layer at the side wall surface of the side groove, thereby reducing the damage caused by the vibration.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an embodiment of a vibration absorber.
FIG. 2 is a cross-sectional view showing an embodiment of a vibration absorber.
FIG. 3 is a cross-sectional view showing an embodiment of a vibration absorber.
FIG. 4 is a cross-sectional view showing an embodiment of a vibration absorber having a two-layer structure in which rubber or plastics has a different shape.
FIG. 5 is a cross-sectional view of a state in which a vibration absorber is formed in a U shape and is provided so as to wrap a U-shaped side groove.
FIG. 6 is a cross-sectional view of a state in which a vibration absorber is formed in an L shape and is provided on the sidewalk side of a U-shaped side groove.
FIG. 7 is a cross-sectional view of a state in which the vibration absorber is formed in an L shape and the tip is directed to the road side.
FIG. 8 is a cross-sectional view of a state in which a vibration absorber formed by rubber or plastics in a bar shape is formed in a U shape and is provided so as to wrap a U-shaped side groove.
FIG. 9 is a cross-sectional view showing a state in which a vibration absorber formed by rubber or plastics in a rod shape is formed in an L shape and provided on the road side of a U-shaped side groove.
FIG. 10 is a cross-sectional view of a state in which a vibration absorber formed by sticking rubber or plastics into a rod shape is formed in an L shape and face each other.
FIG. 11 is a cross-sectional view of a state where an L-shaped side groove is provided so as to be wrapped.
FIG. 12 is a cross-sectional view of a state in which the vibration absorber is formed in an L shape and the tip is directed to the road.
FIG. 13 is a cross-sectional view of a state in which a vibration absorber formed by sticking rubber or plastics into a L-shaped side groove is provided.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rubber or plastics 1A Rubber or plastics 2 Foam 2A Foam 3 Covering layer 10 Road 11 Sidewalk or residential land 20 U-shaped side groove 21 U-shaped block main body 22 Lid 23 Natural aggregate X Vibration absorber Y Vibration absorber

Claims (8)

A method of absorbing road traffic vibration propagating on the ground surface layer, characterized in that a vibration absorber formed by laminating rubber or plastics and foam material is disposed on the outer surface side of a side groove provided on a road shoulder. The method for absorbing road traffic vibration propagating through the ground surface layer according to claim 1, wherein the vibration absorber is disposed so as to wrap around the entire outer surface side of the side groove. 2. The method for absorbing road traffic vibration propagating through the ground surface layer according to claim 1, wherein the vibration absorber is disposed in an L shape on the bottom surface of the gutter and on the surface opposite to the road side. 2. The method of absorbing road traffic vibration propagating on the ground surface layer according to claim 1, wherein the vibration absorber is disposed on a side surface of the side groove on the road side. A ground comprising rubber or plastics formed in a rod-like body, and a vibration absorber formed by embedding the rod-like body in a foam material of a plate-like body is disposed on the outer surface side of a side groove provided on a road shoulder. Absorption method of road traffic vibration propagating on the surface. 6. The method of absorbing road traffic vibration propagating through the ground surface layer according to claim 5, wherein the rod-shaped body is disposed so as to be positioned at a corner of the side groove. 6. The ground surface layer according to claim 5, wherein the vibration absorber is disposed in an L shape on the bottom surface of the side groove and the surface on the road side, and the rod-shaped body is disposed at a corner of the side groove. Absorption method of road traffic vibration that propagates through the road. 6. The road traffic vibration propagating on the ground surface layer according to claim 5, wherein the vibration absorber is notched on the bottom surface side of the side groove and the rod-like body is disposed at a corner of the side groove. Absorption method.

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