JPH03290513A - Scaffolding for checking and repairing bridge pier beam - Google Patents

Abstract

PURPOSE:To enable the installation and assembly of a scaffolding in a short time and safely by applying the constitution wherein a truss-like scaffolding body capable of being mounted to a 'torii' (gate of Japanese shrine)-shaped or a U-shaped hanger member is so made as to be collapsible at both ends. CONSTITUTION:There are provided truss-like scaffolding bodies 10 and 10 capable of being mounted to a 'torii'-shaped or a U-shaped hanger member 12 striding over the pier beam 1 of a highway or the like. Furthermore, both ends of the scaffolding bodies 10 and 10 are so formed as to be collapsible via hinges 11 and 11. The collapsed scaffolding bodies 10 and 10 are carried by a truck or the like, and mounted to the hanger member 12 striding over the pier beam 1, using a truck crane or the like, and then both of the collapsed ends are expanded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is particularly useful for inspection and repair of bridge piers and steel girders above them, as well as the surrounding areas of expressways with roads with heavy traffic underneath. This concerns scaffolding for the inspection and repair of bridge piers.

[Conventional technology]

Conventionally, as shown in Fig. 9, a telescopic device has been used to connect the bridge pier 1 of an expressway and the steel girder 2 above it, as well as the shoe 3 and steel girder 2 interposed between the pier 1 and the steel girder 2. 4, etc., when performing inspection and repair, a large number of scaffolding pipes 5 are assembled while being suspended with chains 7 hooked to the horizontal grooves 6 of the steel girder 2.
A scaffolding board 8 and a sheet 9 are installed inside the scaffolding pipe 5,
This is to prevent equipment from falling from the scaffolding onto the road below during inspection and repair work.

However, since the above-mentioned scaffold assembly work uses aerial work vehicles, etc., it is necessary to restrict traffic on the road under the pier 1 for a long period of time, and the scaffold assembly work requires P.O. This is inefficient and increases costs as it requires additional workers and increases the number of working hours and days.Furthermore, there is a problem in that many accidents occur when equipment falls during the scaffold assembly work mentioned above. Permit conditions for seed construction work are becoming stricter year by year.

[Problem to be solved by the invention]

The present invention has been made in order to solve the above-mentioned conventional problems, and it is possible to significantly shorten the work time when assembling scaffolding for inspection and repair of bridge piers, and moreover, during the work, the equipment may be damaged by the road beneath it. The problem to be solved was to provide scaffolding for inspection and repair of bridge piers without the risk of falling.

[Means to solve the problem]

As a means for solving the above-mentioned problems, the bridge pier inspection and repair scaffold of the present invention includes vertical members on both sides of a torii-shaped or U-shaped horizontal beam hanger material that straddles a pier beam on an expressway. It consists of a truss-shaped scaffolding body that can be attached to a hanger material attached at right angles, with both ends foldable via hinges, and this scaffolding can be folded and placed on the bed of a truck. The scaffold can be installed and assembled in a short time and safely by attaching it using a truck crane or the like to the hanger material that is attached across the pier, and then spreading out both folded ends.

〔Example〕

The present invention will be described in detail below with reference to the drawings. FIG. 1 is a front view of the main part of a truss-shaped scaffold main body of a bridge pier inspection and repair scaffold according to an embodiment of the present invention, and FIG. Plan view, Figure 3 is a side sectional view taken along the line C-C in Figure 2, Figure 4 is an enlarged side view of the hanger material that straddles the bridge pier in Figure 1, and Figure 5 is loaded with the scaffolding in Figure 1. Fig. 6 is a rear view of the truck shown in Fig. 5, Fig. 7 is a front view showing how the scaffolding is attached to the pier from the truck shown in Fig. 6, and Fig. 8 is a plan view of the truck shown in Fig. 7. It is a diagram.

First, as shown in FIG. 1, the truss-shaped scaffold main body IO constituting this scaffold is formed so that its both ends can be folded in the direction of arrow R, as shown by the two-dot chain line in FIG. 2, via hinges 11. has been done.

In addition, for the pier 1, a hanger material 12 consisting of a cross beam hanger material 12A that straddles the bridge pier as shown in FIG. As shown in the figure, the above truss-shaped scaffold body lO
can be installed.

Further, this truss-shaped scaffold main body 10 is covered with a wire mesh 14 for preventing falling equipment, and a handrail 15 is inserted into the outer periphery of the upper part and fixed with bolts.

Moreover, as shown in FIG. 2, this truss-shaped scaffold main body 10
A collapsible falling object prevention plate 16 is provided in the gap between the scaffold and the pier 1, and after the scaffolding is assembled, the falling object prevention plate 16 is opened as shown in Fig. 2.

The bridge pier inspection and repair scaffolding 20 of the present invention having the above configuration is transported along the road 23 by being loaded two by two on the bed of a truck 21 in a folded state as shown in FIGS. 5 and 6.
As shown by the solid line in Figures 7 and 8, directly below the pier 1! ! The hanger material 12 straddles the pier 1 while being suspended from the crane boom 22 of the truck 21 on the 23
is attached to the mounting hardware 13 of one of the vertical members 12B, opens both folded ends, and opens the fall prevention plate 16.
The handrail 15 is also attached, and the scaffolding on one side of the pier 1 can be attached and assembled.

Thereafter, the truck 21 is moved to the road lB2 on the opposite side of the median strip 24 as indicated by the two-dot chain line in FIGS. 7 and 8.
3 is moved, and another pier inspection and repair scaffold 20 is attached and assembled to the other side of the pier 1.

As described above, the pier 1
and a steel girder 2 on which the concrete slab 19 is placed on top of it,
It is possible to inspect and repair the shoe 3 interposed between the pier 1 and the steel girder 2, as well as the expansion and contraction device 4 shown in FIG.

As shown in FIG. 4, the mounting bracket 13 is attached to the hanger material 12 with bolts, and by changing the mounting position, the height of the pier inspection and repair scaffold 20 to the pier 1 can be reduced. It is adjustable.

〔Effect of the invention〕

As explained above, according to the bridge pier beam inspection and repair scaffold of the present invention, the assembly work time for installing the scaffold on the bridge beam is significantly reduced, and the scaffold assembly using the conventional method of suspending the scaffolding vibrator with a chain is significantly reduced. The work used to take about 5 hours, but with the scaffolding of the present invention, the assembly work can be completed in about 2 and a half hours, increasing work efficiency, reducing work costs, and further reducing the time required for traffic control on the underlying road. This has the effect of reducing nuisance to passing vehicles.

In addition, no skilled person is required to assemble the scaffolding, and it is also possible to prevent accidents in which equipment falls onto the road below during work, which is effective in improving safety.

[Brief explanation of drawings]

FIG. 1 is a front view of the main part of a truss-like scaffolding body of a bridge pier inspection and repair scaffold according to an embodiment of the present invention, and FIG. 2 is a plan view of FIG. 1.
Figure 3 is a side sectional view taken along the line C-C in Figure 2, and Figure 4 is a cross-sectional view of Figure 1.
Figure 5 is a side view of the truck loaded with the scaffolding shown in Figure 1, Figure 6 is a rear view of the truck in Figure 5, Figure 7 is Figure 6. 8 is a plan view of FIG. 7, and FIG. 9 is a schematic side view of a conventional scaffold for inspection and repair of a pier. 1... Pier beam, 10... Truss-shaped scaffolding body, 11.
... Hinge, 12... Hanger material, 12A... Horizontal beam hanger material, 12B... Vertical member, 13... Mounting metal fittings.

Claims (1)

[Claims] A pier inspection and repair scaffold that has a truss-like scaffolding body that can be attached to a torii-shaped or U-shaped hanger that straddles the pier, with both ends foldable.