JP2800106B2 - Steel wall railing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel wall balustrade installed on a bridge, particularly a road bridge such as an elevated road, and capable of absorbing noise generated by running of a vehicle.

[0002]

2. Description of the Related Art A road bridge is provided with a railing on a road bridge to prevent vehicles such as automobiles from jumping out of the road.
2. Description of the Related Art A noise barrier is installed to prevent noise generated by running of a vehicle from leaking out of a road.

The source of noise due to the running of a vehicle is mainly the friction noise between pavement and tires. In addition to the noise of the car engine and the noise of cutting off the wind of the vehicle body, the noise is generated 50 meters above the road surface.
It is recognized as being at a low position of about cm (magazine "Road" September 1995, p. 31).

[0004] However, most of the soundproofing walls are installed on wall balustrades installed to prevent vehicle departure. Since the wall railing is usually made of concrete, the sound insulation effect can be sufficiently recognized, but there is no sound absorption effect,
The emitted noise is repeatedly reflected on the left and right walls. In order to prevent the noise from leaking out of the road, a high soundproof wall is installed or a curved surface is forcibly applied to the soundproof wall.

However, as described above, since the source of noise due to the running of the vehicle is at a low position, it is very preferable to be able to absorb the noise at that position.

As a method of absorbing the noise caused by the running of the vehicle at a low position, it is conceivable to first install a soundproofing wall in front of the height of the wall. In this method, the width of the road is increased by the thickness of the soundproofing wall. And it is not realistic, causing a huge increase in construction costs.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and provides a user-friendly steel wall balustrade capable of absorbing noise caused by running of a vehicle at a low position. It is.

[0008]

The present invention has the following means to attain the above object.

[0009] Basically, a steel front plate provided with a plurality of sound absorption holes penetrating the inner and outer surfaces raised to the front side with the floor slab fixed plate interposed therebetween, and a steel front plate raised to the rear side. A guard section is provided below the front of the steel wall with soundproofing material incorporated between the rear panel
The steel wall railing was provided with a steel drainage ditch consisting of a running water section .

Next, the floor is fixed to the front side with the slab fixing plate interposed therebetween, a soundproofing material is attached to the inner surface, and a steel front plate provided with a sound absorbing hole penetrating the inner and outer surfaces is raised to the rear surface. The front lower part of the steel wall consisting of a steel back plate fitted with a soundproofing material with irregularities on the surface that reflects sound at an angle
A steel wall railing provided with a steel drainage ditch consisting of a guard portion and a running water portion .

[0011] By this means, the above object is achieved.
It is possible to provide aesthetically pleasing steel wall railings
You.

[0012]

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing a situation where a steel wall bail according to the present invention is installed on a floor slab, FIG. 2 is an exploded sectional view of the steel wall bail, FIG. FIG.
FIG. 5 is a sectional view taken along line BB of FIG. 3.
In the figure, 1 is a steel rear plate, 2 is a steel floor slab fixing plate, 3 is a steel front plate, 4 is a steel running water section, 5 is a steel guard section, and 6 and 7 are soundproof. Material.

The rear plate 1 has an appropriate length in the direction of road travel, and has a soundproofing material 6 attached to the inner surface of the rear plate 1 with an adhesive. It is fixed to the rear side by welding or the like. Reference numeral 8 denotes a front receiving plate for facilitating mounting and mounting a front plate described later on the front surface of the floor slab fixing plate 2, and is fixed to the front side of the floor slab fixing plate 2 by welding or the like. Reference numeral 10 denotes a reinforcing plate.

The front plate 3 has an appropriate length in the direction of road travel, has a sound insulating material 7 attached to the inner surface thereof, and is provided with a plurality of sound absorbing holes 11 penetrating the inner and outer surfaces. Reference numeral 9 denotes a top plate that closes the upper part when it rises to the front of the floor slab fixing plate 2.

The soundproof material 6 has unevenness formed on the entire surface thereof. The unevenness reflects the sound that has been absorbed from the sound absorbing hole 11 of the front plate 3 at an angle.
The soundproofing material is not separately attached as soundproofing materials 6 and 7 to the rear plate and the front plate 3, but is provided between the rear plate 1 and the front plate 3 which can be set up with the floor slab fixing plate 2 interposed therebetween. Since it is only required to be incorporated, for example, it may be merely filled between the rear plate 1 and the front plate 3 or may be only attached to the rear plate 1 alone. The soundproofing material is preferably a resin foam because of its excellent sound absorbing effect or sound insulating effect. For example, urethane foam can be used.

The running water part 4 comprises a back part 4a, a bottom part 4b and a receiving part 4c, and the guard part 5 comprises a front part 5a, a top part 5b and a water guiding part 5c. This forms a steel drain.

The components thus formed are integrated as follows.

The rear plate 1 in which the floor slab fixing plate 2 and the front receiving plate 8 are integrated is fixed to the floor slab A with the floor slab fixing plate 2 using the anchor bolts 12. Next, the front plate 3 is attached to the front receiving plate 8,
After the back surface portion 4a of the running water portion 4 of the steel drainage groove is overlapped and integrated using the combination bolt 13, the guard portion 5 of the steel drainage groove is assembled to the flowing water portion 4. 14 is a mounting bolt.

In the case of a steel wall railing in which a steel drain groove is not integrated, the front wall 3 may be overlaid on the front receiving plate 8 and assembled using a combination bolt to form a steel wall.
Further, the steel drainage ditch may be one in which the flowing water portion 4 and the guard portion 5 are integrated.

Thus, a steel wall rail according to the present invention is formed.

[0022]

Since the present invention has been made as described above,
It has the following effects.

According to the first and second aspects, the low-level noise generated by the running of the vehicle is absorbed by the sound-absorbing hole of the front panel, is absorbed by the soundproofing material, and is shielded, so that the noise leaks out of the road or on the road. Decreases. In addition, it is economical because it is not necessary to install a sound barrier on the railing as in the past, and furthermore, since the sound barrier is not installed inside the railing, the road width is effectively used. be able to. In addition, the dead load on the floor slab can be reduced because the rail is hollow and sandwiches the floor slab fixing plate.

According to the second aspect of the present invention, the low-level noise generated by the running of the vehicle is absorbed through the sound-absorbing hole of the front plate and is absorbed or blocked by the soundproofing material attached to the inner surface of the rear plate, but is not absorbed. The noise is reflected by the soundproofing material attached to the inner surface of the front plate at different angles due to the unevenness formed on this soundproofing material, and the noise not absorbed by this soundproofing material is again installed on the inner surface of the rear plate. Reflects on the material and repeats this reflection. Noise can be attenuated by repeating this reflection.

In the first and second aspects, by integrating the steel drain groove, bolts used for integrating the steel wall can be covered, and the appearance is not impaired.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a situation where a steel wall bail according to the present invention is installed on a floor slab.

FIG. 2 is an exploded sectional view of a steel wall railing.

FIG. 3 is a partial front view of a steel wall railing.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a sectional view taken along line BB of FIG. 3;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 rear panel 2 floor slab fixing plate 3 front panel 4 running water section 5 guard section 6 soundproofing material 7 soundproofing material 11 sound absorbing hole

Claims (2)

(57) [Claims] 1. A steel front plate having a plurality of sound-absorbing holes penetrating the inner and outer surfaces rising to the front side with a floor slab fixing plate interposed therebetween, and a steel rear plate rising to the rear side. A steel wall balustrade comprising a steel drainage groove formed of a guard portion and a running water portion below a front surface of a steel wall having a soundproofing material interposed therebetween. 2. A steel slab having a sound absorbing material penetrating through the inner and outer surfaces and a steel front plate having a sound absorbing hole and a rear surface. A steel drainage channel consisting of a guard part and a running water part below the front surface of a steel wall consisting of a steel rear plate fitted with a soundproofing material having irregularities on the surface to reflect the light at an angle A steel wall railing.