JPH0978528A - Member both for scaffold and for sound absorbing for elevated - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the noises of vehicles and improve the efficiency of the repair work by filling a sound absorbing material between an upper plate having many through holes and a lower plate having many through holes and installed with a belt-like bulge section protruded downward. SOLUTION: A sound absorbing material 34 made of glass wool is filled between an upper plate 31 and a lower plate 33 made of a metal plate material and formed with a bulge section protruded into a belt shape extended along the longitudinal direction of an elevated bridge 1. The surface of the sound absorbing material 34 is covered with a synthetic resin sheet 4, and the sheet 4 is prevented from being abraded in contact with the edges of the through holes arranged on the upper plate 31 and the lower plate 33 by the vibrations of a scaffold/sound absorbing member 3. A stainless wire mesh or glass cloth is provided on the surface of the sheet 4, and it is arranged between the upper plate 31 including the bulge section of the lower plate 33 and the lower plate 33. The sound absorbing material 34 filled between the upper plate 31 including the bulge section of the lower plate 33 and the lower plate 33 is made of an integrally formed block body. Manufacture is facilitated, and the manufacturing cost can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overpass such as an elevated road or an elevated railroad (in this specification, sometimes simply referred to as "an overpass"), and particularly to an overpass with a road under the viaduct. The present invention relates to a sound-absorbing member for a scaffold that is also suitable as a permanent scaffold.

[0002]

2. Description of the Related Art In recent years, from the viewpoint of effective use of land, particularly in urban areas, roads are often installed under viaducts such as elevated roads and elevated railways. By the way, viaducts are exposed to severe environments such as exhaust gas emitted from traveling vehicles, vibrations caused by traveling vehicles, and rainwater, and deteriorate over time. In order to prevent this, it is necessary to frequently perform repair work such as repair of floor slabs including pavement and painting of steel materials used for bridge girders.

[0003]

[Problems to be Solved by the Invention]
For the repair of the bottom surface of the floor slab and the painting of the steel material used for the bridge girder, a temporary scaffold is assembled below the floor slab every time the repair work is performed, and it is removed when the repair work is completed. It had a problem of low work efficiency. In addition, in the work space on the temporary scaffolding, the noise of the vehicle traveling on the viaduct and the noise of the vehicle traveling on the lower road are directly transmitted when a road is installed under the viaduct. The working environment was also extremely poor in terms of this. Furthermore, when a road is provided beneath the viaduct, the noise of vehicles traveling on the lower road is reflected by the floor slab of the viaduct, causing noise pollution in the surrounding area.

The present invention solves the problems of the above-mentioned conventional viaduct with a road under the viaduct, reduces the noise of the vehicle and improves the work efficiency of repair work. An object is to provide a sound absorbing member.

[0005]

In order to achieve the above object, the sound absorbing member for scaffolding of the viaduct of the present invention forms a predetermined working space below the floor slab of the viaduct so as to cover the lower surface of the floor slab. A sound absorbing member for scaffolding of a permanent scaffold to be provided, an upper surface plate having a large number of through holes, a lower surface plate having a large number of through holes and forming a bulging portion projecting downward, and a bulging portion of the lower surface plate And a sound absorbing material filled between the upper plate and the lower plate.

Since the sound absorbing member for scaffolding of the viaduct having the above structure can reduce the noise of the vehicle traveling on the viaduct and the noise of the vehicle traveling on the road below the viaduct, the work on the permanent scaffolding can be performed. The work environment in the space can be maintained in good condition, and work efficiency can be improved in combination with the fact that scaffolding does not have to be assembled each time repair work is performed, and noise in the area around the viaduct is reduced. can do.

In this case, in order to improve the noise reduction effect and to reduce the manufacturing cost of the sound-absorbing member that also serves as a scaffold, the bulging portion of the lower plate may be formed in a strip shape.
Further, the sound absorbing material filled between the upper surface plate and the lower surface plate including the inside of the bulging portion of the lower surface plate can be formed of a block body having a cavity.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a sound-absorbing member for scaffolding of viaduct according to the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2 to 3 (first embodiment) and FIGS. 5 to 6 (second embodiment), below the floor slab 11 of the viaduct 1 such as an elevated road or an elevated railway. A permanent scaffold 2 is provided to cover a substantially entire lower surface of the floor slab 11 so as to form a predetermined work space 4.

The permanent scaffold 2 is permanently installed so that an operator can enter the work space 4 to repair the lower surface of the floor slab 11 or to repair the steel material used for the bridge girder 12. It is provided so as to cover substantially the entire lower surface of the floor slab 11 during the repair work so that there are no gaps where work materials such as paint, reinforcing bars, concrete, etc. and work tools fall onto the road 6. This eliminates the need to assemble the scaffolding every time when performing repair work like the conventional temporary scaffolding, and is highly safe.
Combined with the favorable work environment for repair work, work efficiency can be improved, and at the time of repair work, paint,
Work materials such as rebar and concrete do not drop, and work tools do not fall, so the vehicles running on the roads below are not damaged, and the compensation cost associated therewith can be reduced. it can. The height H of the work space 4
Is preferably set to a height at which the repair work such as the repair of the lower surface of the floor slab 11 and the coating of the steel material used for the bridge girder 12 can be easily performed, for example, about 1 to 2 m.
Further, the permanent scaffold 2 is formed with an entrance / exit 21 at an appropriate location such as near the pier 14 so that an operator can enter the work space 4 to perform repair work.

The permanent scaffold 2 is an erection member 22 made of H-shaped steel arranged on the bridge girder 12 of the viaduct 1, and the erection member 22.
Scaffolding / sound absorbing member 3 fixed to the back via a fixing member 23
Consists of

On both sides of the permanent scaffold 2 in the width direction of the viaduct 1, a fall prevention device 5 is provided via hinges 51 along the longitudinal direction of the viaduct 1. This fall prevention device 5 prevents work materials such as paint, reinforcing bars, and concrete, work tools, and the like from falling on the road 6 and the worker from falling during repair work on the sidewall 13 of the viaduct 1. It is usually installed in the storage position below the floor slab 11 of the viaduct 1, and is used for adjustment work such as a chain 52 during repair work.
Is operated to swing about the hinge 51, so that the overhanging position 5 ′ outside the side wall 13 of the viaduct 1 is outside.
It is configured to be installed in. The overhang width W of the fall prevention device 5 is set to
Work materials such as rebar and concrete and work tools are on the road 6
A width that can prevent the operator from falling or falling down,
For example, it is preferable to set it to about 1 m. The fall prevention device 5 is configured by disposing a decorative plate 54 made of a composite material such as FRP on the surface side (the side visible from the road 6) of a frame member 53 made of rustproof steel. The fall prevention device 5 has a sound absorbing function, for example, an expanded metal or a punched metal on the back side (the side facing the work space 4), similar to the structure of the scaffold / sound absorbing member 3 described later. Metal plate 55 having many through holes such as metal
And the metal plate 55 and the decorative plate 54
It may be configured by filling a sound absorbing material such as glass wool between and. Further, the fall prevention device 5 is formed with an entrance / exit 56 at an appropriate place such as near the pier 14 so that a worker can enter the work space 4 to perform repair work.

A first embodiment of the sound absorbing member 3 which also serves as a scaffold is shown in FIG.
~ Shown in FIG. The sound-absorbing member 3 also serving as a scaffold includes a top plate 31 made of a metal plate material having a large number of through holes such as a rust-proof expanded metal or punching metal, a frame member 32 made of a rust-proof metal plate material, and an aluminum plate. A bottom plate 33 made of a metal plate having a large number of through holes such as a punching metal made of metal and a downwardly projecting bulge extending in the longitudinal direction of the viaduct 1 and a bottom plate 33.
The sound absorbing material 34 such as glass wool is filled between the upper surface plate 31 and the lower surface plate 33 including the inside of the bulge portion.

In this case, in order to prevent the sound absorbing material 34 such as glass wool from scattering, the surface of the sound absorbing material 34 is covered with a synthetic resin sheet 35 such as polyvinyl fluoride,
The synthetic resin sheet 35 is prevented from being worn or damaged during the repair work by coming into contact with the edges of the through holes formed in the upper surface plate 31 and the lower surface plate 33 due to the vibration of the sound absorbing member 3 also serving as the scaffold, Further, it is desirable to provide a wire mesh or glass cloth 36 made of stainless steel on the surface thereof and dispose between the upper surface plate 31 and the lower surface plate 33 including the inside of the bulging portion of the lower surface plate 33. Further, the sound absorbing material to be filled between the upper surface plate 31 and the lower surface plate 33 including the inside of the bulging portion of the lower surface plate 33 can be composed of a block body integrally formed, whereby the sound absorbing member 3 also serving as the scaffolding 3 can be formed. Manufacturing can be facilitated and manufacturing cost can be reduced.

A second embodiment of the sound absorbing member 3 which also serves as a scaffold is shown in FIG.
7 to FIG. The sound-absorbing member 3 also serving as a scaffold includes an upper plate 31 made of a metal plate member having a large number of holes such as aluminum punching metal, a frame member 32 made of an aluminum metal plate member, and an aluminum punching metal member. A bottom plate 33 made of a metal plate material having a large number of through holes and having a bulging part protruding downward in the shape of a strip extending along the longitudinal direction of the viaduct 1, and the inside of the bulging part of the bottom plate 33 It is composed of a sound absorbing material 34 such as glass wool filled between the face plate 31 and the lower face plate 33.

In this case, the upper surface plate 31, the frame member 32, and in some cases, the lower surface plate 33 can be integrally formed by extrusion molding. In addition, the frame member 32
A mounting piece 32a is formed on one outer side surface, and a receiving piece 32b that supports the mounting piece 32a of the frame member 32 of the adjacent scaffolding / sound absorbing member 3 is formed on the other outer side surface. It is possible to eliminate the gap between the sound absorbing members 3 that also serve as the scaffolding, and it is possible to further reduce the noise of the vehicle traveling on the road below the viaduct. The sound absorbing material 34 covers the surface of the sound absorbing material 34 with a synthetic resin sheet 35 such as polyvinyl fluoride in order to prevent the sound absorbing material 34 such as glass wool from scattering, and the synthetic resin sheet 35 serves as the scaffolding sound absorbing member 3. Vibration of the upper surface plate 31 and the lower surface plate 33
Worn by contacting the edge of the through hole formed in
To prevent damage during repair work, further wire mesh or glass cloth 36 made of stainless steel on the surface.
It is desirable to dispose and arrange between the upper surface plate 31 and the lower surface plate 33 including the inside of the bulging portion of the lower surface plate 33. Further, the sound absorbing material to be filled between the upper surface plate 31 and the lower surface plate 33 including the inside of the bulging portion of the lower surface plate 33 can be composed of a block body integrally formed, whereby the sound absorbing member 3 also serving as the scaffolding 3 can be formed. Manufacturing can be facilitated and manufacturing cost can be reduced.

FIG. 8 shows a first modification of the second embodiment of the sound absorbing member 3 which also serves as a scaffold. The sound-absorbing member 3 also serving as a scaffold is composed of a block body integrally formed with a sound-absorbing material that is filled between the upper surface plate 31 and the lower surface plate 33 including the inside of the bulging portion of the lower surface plate 33, and has a cavity at the center thereof. 34a is formed, whereby the amount of the sound absorbing material used can be reduced without lowering the sound absorbing performance. The other structure of this embodiment is the same as that of the second embodiment.

FIG. 9 shows a second modification of the second embodiment of the sound absorbing member 3 which also serves as a scaffold. The sound absorbing member 3 for scaffolding is formed by forming projecting pieces 32c, 32c on the outer surface of the frame member 32, and by installing the sound absorbing member 3 for scaffolding so that the projecting pieces 32c, 32c of the adjacent frame members 32 overlap each other. It is possible to eliminate the gap between the adjacent sound absorbing and scaffolding members 3 and to further reduce the noise of the vehicle traveling on the road below the viaduct, and to form the rib on the back surface of the top plate 31. 32d is formed to reinforce the upper surface plate 31.

FIG. 10 shows a third modification of the second embodiment of the sound absorbing member 3 which also serves as a scaffold. In the sound absorbing member 3 also serving as the scaffold, in the second modified example of the second embodiment, instead of fixing the lower surface plate 33 by fitting and locking the lower surface plate 33 on the frame member 32, the lower surface plate 33 is framed. It is fixed to the member 32 by screws or welding. The other structure of this embodiment is the same as that of the second modification of the second embodiment.

In the second modified example and the third modified example of the second embodiment, as shown in the first modified example of the second embodiment, the upper surface plate 31 including the inside of the bulging portion of the lower surface plate 33. The sound absorbing material to be filled between the lower surface plate 33 and the lower surface plate 33 can be composed of an integrally formed block body having a cavity at the center,
As a result, the amount of the sound absorbing material used can be reduced without lowering the sound absorbing performance.

The permanent scaffold 2 is fixed to the viaduct 1, the sound-absorbing member 3 also serves as the scaffold, the structure and material of the sound-absorbing member 3 serves as the scaffold, and the sound-absorbing member 4 vertically extends on the lower surface of the permanent scaffold 2. The structure and material of the sound absorbing member 4, the mounting structure of the fall prevention device 5, and the structure and material of the fall prevention device 5 are not limited to those in the above-described embodiments, and may be changed without departing from the spirit of the present invention. However, for example, as the material of the sound absorbing member 3 also serving as the scaffold, since the permanent scaffold 2 is exposed to a severe environment such as exhaust gas emitted by a traveling vehicle, vibration by the traveling vehicle, and rainwater, a steel material subjected to anticorrosion treatment, It is desirable to use a material having weather resistance, such as a metal material that does not easily rust such as stainless steel and aluminum, a composite material such as synthetic resin and FRP.

[0022]

According to the invention described in claim 1, the sound absorbing member also serving as a scaffold has an upper surface plate having a large number of through holes, and a lower surface plate having a large number of through holes and having a bulging portion protruding downward. And a sound absorbing material filled between the lower surface plate and the upper surface plate including the inside of the bulging portion of the lower surface plate, the noise of the vehicle traveling on the viaduct and the noise of the vehicle traveling on the road below the viaduct. Since noise can be reduced, the working environment of the work space on the permanent scaffolding can be maintained in good condition, and it is not necessary to assemble the scaffolding each time repair work is performed, which improves working efficiency. It is also possible to reduce noise in the area around the viaduct.

According to the second aspect of the present invention, by forming the bulging portion of the lower plate in the shape of a band, it is possible to improve the noise reduction effect and to facilitate the production of the scaffolding / sound absorbing member. The manufacturing cost can be reduced.

According to the third aspect of the present invention, the sound absorbing material to be filled between the upper surface plate and the lower surface plate including the inside of the bulging portion of the lower surface plate is formed by the block body having the cavity,
The noise reducing effect can be improved, the scaffolding / sound absorbing member can be easily manufactured, and the manufacturing cost thereof can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a viaduct having a permanent scaffold by the sound absorbing member of the viaduct for scaffolding of the present invention.

FIG. 2 is a perspective view of the relevant part.

FIG. 3 is a sectional view of the same main part.

4A and 4B show a first embodiment of a sound-absorbing member for scaffolds and viaducts of the present invention, in which FIG. 4A is a front view and FIG. 4B is a sectional view.

FIG. 5 is a perspective view of a main part of a viaduct having a permanent scaffold by the sound absorbing member of the viaduct for scaffolding of the present invention.

FIG. 6 is a sectional view of the same main part.

7A and 7B show a second embodiment of a sound-absorbing member for scaffolding of viaduct of the present invention, (a) is a front view and (b) is a sectional view.

8A and 8B show the first modified example, FIG. 8A is a front view, and FIG.
Is a sectional view.

9A and 9B show the second modification example, in which FIG. 9A is a front view and FIG.
Is a sectional view.

FIG. 10 shows the same third modified example, (a) is a front view,
(B) is a sectional view.

[Explanation of symbols]

 1 Viaduct 11 Floor slab 12 Bridge girder 13 Side wall 14 Pier 2 Permanent scaffolding 3 Sound absorbing member for scaffolding 31 Top plate 32 Frame member 33 Bottom plate 34 Sound absorbing material 4 Working space 5 Fall prevention device 6 Road

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[Procedure amendment]

[Submission date] September 19, 1995

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction contents]

The permanent scaffold 2 is fixed to the viaduct 1, the sound absorbing member 3 is also used as the scaffold, the sound absorbing member 3 is also used as the scaffold, the structure and the material of the fall prevention device 5, and the structure and the material of the fall prevention device 5 are attached. The present invention is not limited to the above-mentioned embodiment, and can be changed without departing from the gist of the present invention. For example, as the material of the sound-absorbing member 3 also for the scaffold, the permanent scaffold 2 is discharged by the traveling vehicle. Since it is exposed to harsh environments such as exhaust gas, vibration from traveling vehicles, rainwater, etc., it has weather resistance such as rustproof steel materials, metal materials that do not rust such as stainless steel and aluminum, synthetic resins, composite materials such as FRP. It is desirable to use materials.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Atsutaka Fujii 3-20 Minamisikunigaoka-cho, Sakai City, Osaka Prefecture

Claims (3)

[Claims] 1. A sound absorbing member for scaffolding of a permanent scaffold, which is provided so as to form a predetermined work space below a slab of a viaduct to cover a lower surface of the slab, and an upper surface plate having a large number of through holes.
It is characterized by comprising a lower surface plate having a large number of through holes and forming a bulging portion protruding downward, and a sound absorbing material filled between the upper surface plate and the lower surface plate including the inside of the bulging portion of the lower surface plate. A sound-absorbing material for viaducts that also serves as a scaffold. 2. The sound absorbing member for a scaffold, which also serves as a viaduct, according to claim 1, wherein the bulging portion is formed in a strip shape. 3. The viaduct according to claim 1, wherein the sound absorbing material filled between the upper surface plate and the lower surface plate including the inside of the bulging portion of the lower surface plate is formed of a block body having a cavity. Sound absorbing material that doubles as a scaffold.