JP2968494B2 - Permanent scaffolding of viaduct - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a viaduct such as an elevated road or an elevated railway (hereinafter sometimes simply referred to as "viaduct"). It concerns a permanent scaffold suitable for installation.

[0002]

2. Description of the Related Art In recent years, from the viewpoint of effective use of land, especially in urban areas, roads have been frequently installed along viaducts such as elevated roads and elevated railways. By the way, viaducts are exposed to harsh environments such as exhaust gas emitted by traveling vehicles, vibrations from traveling vehicles, rainwater, and the like, and deteriorate rapidly at an early stage. In order to prevent this, it is necessary to frequently perform repair work such as repair of floor slabs including pavements and painting of steel used for bridge girders.

[0003]

[0006] Among the repair work,
For repair of the underside of the floor slab and painting of steel used for the bridge girder, a temporary scaffold is assembled under the floor slab every time repair work is performed, and it is removed when the repair work is completed, There was a problem that work efficiency was low. In addition, the noise of vehicles running on the viaduct and the noise of vehicles traveling on the road below are directly transmitted to the work space on the temporary scaffold if the noise is from vehicles running on the viaduct or if a road is installed under the viaduct. In this respect, the working environment was extremely poor. 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.

[0004] The present invention solves the problems of the above-mentioned conventional viaduct in which a road is provided alongside the viaduct, reduces the noise of the vehicle, and improves the work efficiency of the repair work. The purpose is to provide.

[0005]

In order to achieve the above object, a permanent scaffold of a viaduct of the present invention is provided with a permanent work space formed under a viaduct floor slab so as to cover a lower surface of the floor slab. A scaffold, wherein the permanent scaffold is provided between an upper surface plate having a number of through holes, a lower surface plate having a number of through holes and having a bulging portion projecting downward, and an upper surface plate and a lower surface plate. And a sound absorbing material filled between the upper surface plate and the lower surface plate including the inside of the swelling portion of the lower surface plate. It is characterized by being arranged and configured as described above. In this case, the mounting piece is formed on one outer surface of the frame member of the scaffolding / sound absorbing member, and the receiving piece for supporting the mounting piece of the frame member of the adjacent scaffolding / sound absorbing member is formed on the other outer surface. Can be.

The permanent scaffold of the viaduct having the above structure is
Since the noise of vehicles traveling on the viaduct and the noise of vehicles traveling on the road below the viaduct can be reduced, the working environment of the work space on the permanent scaffold can be maintained well, and repair work can be performed. This eliminates the need to assemble a scaffold each time the work is performed, thereby improving work efficiency and reducing noise in the area around the viaduct.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of a viaduct permanent scaffold according to the present invention will be described with reference to the drawings.

As shown in FIG. 1, FIG. 2 to FIG. 3 (first embodiment), and FIG. 5 to FIG. 6 (second embodiment), The permanent scaffold 2 is provided so as 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 the worker enters the work space 4 and repairs the lower surface of the floor slab 11 or repairs 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 so that there is no gap for work materials such as paint, reinforcing steel, concrete, and the like and work tools to fall on the road 6 at the time of repair work. As a result, there is no need to assemble the scaffold each time repair work is performed as in the case of a conventional temporary scaffold.
Along with the favorable work environment of the repair work, it is possible to improve the work efficiency, and at the time of the repair work, paint,
Work materials such as steel bars and concrete, work tools, etc. do not fall, and this does not damage vehicles running on the road below, so it is possible to reduce the compensation cost associated with this. it can. The height H of the work space 4
The height is preferably set to a height at which the repair work such as the repair of the lower surface of the floor slab 11 or the painting of the steel used for the bridge girder 12 can be easily performed, for example, about 1 to 2 m.
The permanent scaffold 2 is provided with an entrance 21 at an appropriate place such as near the pier 14 so that a worker can enter the work space 4 and perform repair work.

The permanent scaffold 2 includes an erecting member 22 made of an H-shaped steel disposed on the bridge girder 12 of the viaduct 1, and an erecting member 22.
And sound absorbing member 3 fixed to fixing member 23 via fixing member 23
Consists of

On both outer sides of the permanent scaffold 2 in the width direction of the viaduct 1, a fall prevention device 5 is extended via a hinge 51 along the longitudinal direction of the viaduct 1. The fall prevention device 5 is used to prevent work materials such as paint, reinforcing steel, concrete, work tools, and the like from dropping on the road 6 and a worker from falling down at the time of repairing the side wall 13 and the like of the viaduct 1. Usually, it is installed at a storage position below the floor slab 11 of the viaduct 1, and during repair work, an adjusting tool 52 such as a chain is used.
Is operated to swing about the hinge 51, and the overhanging position 5 ′ is located below the side wall 13 of the viaduct 1.
It is configured to be installed in In addition, the overhang width W of the fall prevention device 5 is such that when repairing the side wall 13 and the like of the viaduct 1, paint,
Work materials and work tools such as steel bars and concrete
The width that can prevent falling on top and falling of the worker,
For example, it is preferable to set the distance to about 1 m. The fall prevention device 5 is configured by arranging a decorative plate 54 made of a composite material such as FRP on a surface side (a side seen from the road 6) of a frame member 53 made of a rust-proofed steel material. 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
A sound absorbing material such as glass wool may be filled in between them. In addition, the fall prevention device 5 is formed with an entrance 56 at an appropriate place such as near the pier 14 so that a worker can enter the work space 4 and perform repair work.

FIG. 2 shows a first embodiment of a scaffold / sound absorbing member 3 according to the present invention.
4 to FIG. The scaffolding / sound absorbing member 3 includes a top plate 31 made of a metal plate having a large number of through-holes such as a rust-proof expanded metal and a punching metal, a frame member 32 made of a rust-proof metal plate, and aluminum. Plate 33 made of a metal plate material having a large number of through holes such as punched metal made of metal, and having a swollen portion protruding downward in a strip shape extending along the longitudinal direction of viaduct 1;
And a sound absorbing material 34 such as glass wool filled between the upper surface plate 31 and the lower surface plate 33 including the inside of the bulging portion. As described above, by forming the bulging portion of the lower surface plate 33 in a band shape, the noise reduction effect can be improved, and
The production of the scaffolding / sound absorbing member 3 can be facilitated and the production cost can be reduced.

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.
This synthetic resin sheet 35 is worn by contacting 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 scaffold / sound absorbing member 3 and is not damaged during repair work. Further, it is desirable that a stainless steel wire mesh or glass cloth 36 is provided on the surface thereof, and the wire mesh or glass cloth 36 is disposed 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 constituted by an integrally formed block body. Manufacturing can be facilitated and manufacturing costs can be reduced.

FIG. 5 shows a second embodiment of the sound absorbing member 3 which also serves as a scaffold.
7 to FIG. The scaffolding / sound absorbing member 3 includes an upper surface plate 31 made of a metal plate having many through holes such as an aluminum punched metal, a frame member 32 made of an aluminum metal plate, and an aluminum punched metal. A lower plate 33 made of a metal plate material having a plurality of through-holes and having a band-shaped projecting portion extending downward along the longitudinal direction of the viaduct 1, and an upper portion including the inside of the projecting portion of the lower plate 33. It comprises a sound absorbing material 34 such as glass wool filled between the face plate 31 and the lower surface plate 33.

In this case, the upper plate 31 and the frame member 32 and, in some cases, the lower plate 33 can be integrally formed by extrusion. Also, the frame member 32
A mounting piece 32a for supporting the mounting piece 32a of the frame member 32 of the adjacent scaffolding / sound absorbing member 3 is formed on the other outer surface of the mounting piece 32a. The gap between the scaffolding and sound absorbing members 3 can be eliminated, and the noise of the vehicle traveling on the road below the viaduct can be further reduced. 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 scattering of the sound absorbing material 34 such as glass wool. Are vibrated, so that the upper plate 31 and the lower plate 33
Wear due to contact with the edge of the through hole formed in
A stainless steel wire mesh or glass cloth 36 is added on the surface to prevent damage during repair work.
And it is desirable to dispose it between the upper surface plate 31 and the lower surface plate 33 including the inside of the bulge 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 constituted by an integrally formed block body. Manufacturing can be facilitated and manufacturing costs can be reduced.

FIG. 8 shows a first modification of the second embodiment of the scaffold / sound absorbing member 3. The scaffolding-and-sound-absorbing member 3 is formed by integrally forming a sound-absorbing material filled between the upper surface plate 31 and the lower surface plate 33 including the inside of the swelling portion of the lower surface plate 33, and has a hollow at the center thereof. With this configuration, the amount of the sound absorbing material used can be reduced without lowering the sound absorbing performance, and the manufacturing cost can be reduced. The other configuration of this embodiment is the same as that of the second embodiment.

FIG. 9 shows a second modified example of the second embodiment of the sound absorbing member 3 serving also as a scaffold. The scaffolding / sound absorbing member 3 is formed by forming projecting pieces 32c, 32c on the outer surface of the frame member 32 and installing the scaffolding / sound absorbing member 3 so that the projecting pieces 32c, 32c of the adjacent frame member 32 overlap each other. A gap between adjacent scaffolding / sound absorbing members 3 can be eliminated, noise of a vehicle traveling on a road below the viaduct can be further reduced, and a rib is provided on the rear surface of the upper surface plate 31. 32d is formed to reinforce the upper surface plate 31.

FIG. 10 shows a third modification of the second embodiment of the scaffolding / sound absorbing member 3. This scaffolding / sound absorbing member 3 is different from the second modification of the second embodiment in that the lower surface plate 33 is fixed to the frame member 32 by fitting and locking the lower surface plate 33 to the frame member 32. It is fixed to the member 32 by screws or welding. The other configuration of this embodiment is the same as that of the second modification of the second embodiment.

In the second and third modifications of the second embodiment, as shown in the first modification of the second embodiment, the upper plate 31 including the inside of the bulging portion of the lower plate 33 is also provided. The sound-absorbing material to be filled between the base plate and the lower surface plate 33 can be constituted by an integrally formed block body having a cavity in the center,
As a result, the amount of the sound absorbing material used can be reduced without lowering the sound absorbing performance, and the manufacturing cost can be reduced.

The structure for fixing the permanent scaffold 2 to the viaduct 1, the structure for fixing the sound-absorbing member 3 serving as a scaffold, the structure and material of the sound-absorbing member 3 serving as a scaffold, 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 embodiment, and can be changed without departing from the spirit of the present invention. For example, as a material of the scaffolding / sound absorbing member 3, the permanent scaffold 2 is Exposed to harsh environments such as exhaust gas, vibrations caused by running vehicles, rainwater, etc., it has weather resistance, such as rust-proofed steel materials, non-rusting metal materials such as stainless steel and aluminum, synthetic resins, and composite materials such as FRP. It is desirable to use materials.

[0021]

According to the permanent scaffold of the present invention, a permanent scaffold is provided under a viaduct floor slab to form a predetermined working space so as to cover the lower surface of the floor slab. An upper plate having a through hole, a lower plate having a number of through holes and forming a downwardly protruding bulge, a frame member forming a space between the upper plate and the lower plate, and a bulge of the lower plate By installing and constructing a scaffolding / sound absorbing member composed of a sound absorbing material filled between the upper surface plate and the lower surface plate including the inside so that there is no gap where working materials and working tools fall, Can reduce the noise of vehicles traveling on roads and the noise of vehicles traveling on roads below viaducts, so that the work environment on the permanent scaffold can be maintained in a good working environment and repair work can be performed. Work efficiency is improved due to the fact that it is not necessary to assemble the scaffold every time In addition, it is possible to reduce the noise in the area around the viaduct, and also to prevent work materials such as paint, reinforcing steel, concrete, etc. from dropping during repair work, and The vehicle traveling on the road is not damaged, so that the compensation cost associated therewith can be reduced.

Further, a mounting piece is formed on one outer surface of the frame member of the scaffolding / sound absorbing member, and a receiving piece for supporting the mounting piece of the frame member of the adjacent scaffolding / sound absorbing member is formed on the other outer surface. This can eliminate the gap between the adjacent scaffolding / sound absorbing members, and can further reduce the noise of the vehicle traveling on the road below the viaduct.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a viaduct having a viaduct permanent scaffold of the present invention.

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

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

4A and 4B show a first embodiment of a sound-absorbing member which also serves as a scaffold used for a permanent bridge of a viaduct according to the present invention, wherein FIG. 4A is a front view and FIG. 4B is a cross-sectional view.

FIG. 5 is a perspective view of an essential portion of a viaduct having a permanent scaffold of the viaduct of the present invention.

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

FIGS. 7A and 7B show a second embodiment of a scaffolding / sound absorbing member used for a permanent scaffold of a viaduct according to the present invention, wherein FIG. 7A is a front view and FIG. 7B is a cross-sectional view.

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

FIGS. 9A and 9B show the second modified example, where FIG. 9A is a front view and FIG.
Is a sectional view.

10A and 10B show a third modified example, in which FIG.
(B) is a sectional view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Viaduct 11 Floor slab 12 Bridge girder 13 Side wall 14 Bridge pier 2 Permanent scaffold 3 Scaffolding combined sound absorbing member 31 Upper surface plate 32 Frame member 33 Lower surface plate 34 Sound absorbing material 4 Work space 5 Fall prevention device 6 Road

Continuation of the front page (72) Inventor Atsutaka Fujii 3-2-2, Minamimikunigaoka-cho, Sakai-shi, Osaka (58) Fields investigated (Int. Cl. ⁶ , DB name) E01D 19/10 E01D 21/00 E01F 8 / 00

Claims (2)

(57) [Claims] 1. A permanent scaffold provided below a viaduct floor slab to form a predetermined working space so as to cover a lower surface of the floor slab, the permanent scaffold comprising: a top plate having a number of through holes; A lower plate having a number of through holes and having a bulging portion protruding downward, a frame member forming a space between the upper plate and the lower plate, and an upper plate and a lower plate including inside the bulging portion of the lower plate A permanent scaffold of a viaduct, wherein a sound-absorbing member serving also as a scaffold, comprising a sound-absorbing material filled between the scaffold and the sound-absorbing material, is disposed such that there is no gap in which work materials, work tools, and the like fall. 2. A mounting piece is formed on one outer surface of the frame member of the scaffolding / sound absorbing member, and a receiving piece supporting the mounting piece of the frame member of the adjacent scaffolding / sound absorbing member is formed on the other outer surface. The permanent scaffold of the viaduct according to claim 1, characterized in that: