JPH02300455A - Construction method of roof - Google Patents

Abstract

PURPOSE:To obtain a safe condition, by lifting steel beams previously fitted with brackets to attach roof panels and inner scaffolds by a crane to construct steel frames and fitting the roof panels with the work on the scaffolds. CONSTITUTION:Steel beams 3a, 3b fitted with brackets to attach roof panels and inner scaffolds 4 are lifted by a crane 13 to construct steel frames. And the roof panels 6 are lifted by the crane 13 are attached to the brackets for fitting the roof panels with the work on the inner scaffolds 4. In this way, time of construction can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a highly safe roof construction method suitable for constructing a steeply sloped metal roof.

[Conventional technology]

Conventionally, for steep-slope metal roofs, after the steel frame construction is completed, external temporary scaffolding with a slope corresponding to the roof slope is erected, and work from this external temporary scaffolding is used to attach the base to the steel beams and apply a waterproof sheet to the base. Construction was carried out using a procedure that included pasting and finishing metal pasting.

For this reason, not only does construction take a long time, but any work performed during construction is dangerous, with the risk of falling materials, tools, and workers.

In order to solve these problems in terms of construction time and safety, the present inventors assembled highly waterproof roof panels made of a composite base and finishing metal at a factory, and then used cranes etc. to assemble these roof panels. We have already developed a method for constructing roofs that are attached to steel beams by working from internal temporary scaffolding that is lifted and placed inside the building.

[Problem to be solved by the invention]

However, in the above roof construction method, after the steel frame construction was completed, internal temporary scaffolding was erected between the steel frames, so the internal temporary scaffolding could not be used to ensure the safety of the steel frame construction. Since there is a process for assembling internal temporary scaffolding between the roof panel installation process and the roof panel installation process, the installation of the roof panel will be delayed by the time required to assemble the internal temporary scaffolding, which will cause a delay in terms of both safety and construction time. There was room for improvement.

The present invention improves these points, and makes it possible to obtain a simple work scaffold (tack scaffolding) at the time of steel frame erection, and to be able to move on to the roof panel installation process immediately after the steel frame is erected. The present invention provides a method for constructing a roof with

[Means to solve the problem]

The technical means taken by the present invention to achieve the above object are as follows. That is, in the roof construction method according to the present invention, brackets for attaching roof panels and internal temporary scaffolding are attached to the steel beams on the ground in advance, and the steel beams are hoisted by a crane or the like to construct the steel frame. and
Thereafter, the roof panel lifted by a crane or the like is attached to the bracket by work from the internal temporary scaffolding.

The member for attaching the internal temporary scaffold to the beam steel frame may be a temporary material specifically for the internal temporary scaffold, but it is preferable to use hanging fittings for suspending and supporting the permanent catwalk.

That is, on the ground, on the beam steel frame, there is a bracket for mounting the roof panel, an upper part of multiple pairs of hanging brackets for suspending and supporting the permanent catwalk installed in the ceiling, and a structure installed between the upper parts. The steel beams are then lifted with a crane, etc. to construct the steel frame.Then, the lower part of the permanent catwalk and the lifting fittings are lifted with a crane, etc., and the lower part of the The roof panel may be connected to the upper part by working from the internal temporary scaffolding, and the roof panel lifted by a crane or the like may be attached to the bracket by working from the internal temporary scaffolding, or the roof panel may be attached to the beam steel frame on the ground. , a roof panel mounting bracket, a permanent catwalk installed in the ceiling, multiple pairs of hanging fittings for suspending and supporting the permanent catwalk, and an upper part of the hanging fittings. An internal temporary scaffold is attached, and the beam steel frame is hoisted by a crane or the like to construct the steel frame, and then the roof panel lifted by the crane or the like is attached to the bracket by work from the internal temporary scaffold. This is desirable.

Although the hanging fittings for suspending and supporting the catwalk may be provided separately from the brackets for roof panel mounting, the upper part of the hanging fittings may be suspended from both ends of the bracket, and It is desirable to use it as part of the hanging fittings.

[Effect]

According to the above configuration, since the internal temporary scaffolding is attached to the steel beam in advance, the internal temporary scaffolding is completed by lifting this beam steel frame with a crane etc. and performing the steel frame erection. After that, you can immediately begin installing the roof panels.

In addition, since the roof panels lifted by a crane or the like are attached to the beam steel brackets using internal temporary scaffolding, there is no need for external temporary scaffolding, and even when constructing a steeply sloped roof, materials, tools, etc. The risk of falling for workers is reduced.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

Figure 1 shows a steeply sloped metal roof in the middle of construction.

FIG. 2 shows the main part. In the figure, la,
lb is a pillar, and 2 is a pedestal installed at the center of the span inside the building. 3a is a beam steel frame constructed across one column 1a and the gantry 2; 3b is a beam steel frame erected between the beam steel frame 3a and the other column 1b.
This is a beam steel frame that will be erected across the area.

The gantry 2 is installed at an appropriate time after the steel frame erection is completed, that is, the steel beams 3a, 3b and the columns 1a, lb are connected (full tightening or welding of connection bolts), and the steel beams 3a, 3b are connected.
After the connection between them is completed (full tightening of connection bolts or welding), they are dismantled and removed. 4 is an internal temporary scaffold attached to the steel beams 3a and 3b, and 5 is a permanent expanded metal catwalk installed in the ceiling (used for maintenance and inspection of various equipment installed in the ceiling and behind the ceiling). It is a long and narrow walking path. In FIG. 1, 6 is a roof panel, and 7 is a ceiling board, which is attached to the ceiling base after the roof panel 6 is constructed.

The roof construction method is as follows.

That is, as shown in FIGS. 2 to 4, brackets 8 for attaching roof panels and internal temporary scaffolding 4 are attached to the steel beams 3a and 3b on the ground in advance, and the steel beams 3a and 3b are , 3b is hoisted up by a crane or the like to construct a steel frame, and then the roof panel 6 hoisted up by a crane or the like is attached to the bracket 8 by work from the internal temporary scaffolding 4.

The members for attaching the internal temporary scaffolding 4 to the steel beams 3a and 3b are made exclusively for internal temporary scaffolding, and when the internal temporary scaffolding 4 is no longer needed, it is to be dismantled and removed together with the internal temporary scaffolding 4. However, in the illustrated embodiment, a hanging fitting 9 for suspending and supporting the permanent catwalk 5 is used in order to reduce the amount of temporary construction materials.

That is, as shown in FIGS. 2 to 4, the bracket 8 used for attaching the roof panel is made to have a length corresponding to the width of the main catwalk 5 (for example, about 750 mm), and the bracket 8 is mounted on the ground. are attached to the beam steel frame at appropriate intervals, and furthermore, a plurality of pairs of hanging fittings 9 are suspended from both ends of each bracket 8, and the upper portions 98
The internal temporary scaffolding 4 is erected between them.

This steel beam will be lifted up by a crane, etc., and the steel frame will be erected.

As a result, the internal temporary scaffolding 4 is completed, and the internal temporary scaffolding 4 is used as a work scaffolding for steel-framed ancient poetry (tacked scaffolding when performing work such as final tightening of connecting bolts or welding).

After that, the permanent catwalk 5 and the lower part 9b of the hanging fitting 9 are lifted up by a crane or the like, and the lower part 9b is connected to the upper part 9a by bolts, nuts, etc. from the internal temporary scaffolding 4. At the same time, the roof panel 6 lifted by a crane or the like is attached to the bracket 8 by work from the internal temporary scaffolding 4.

10 is a temporary handrail, 11 is a permanent handrail, and 12 is a steady rest place that can be attached to the hanging fitting 9 as needed after the internal temporary scaffolding 4 is removed. Reference numeral 13 indicates a hanging wire by a crane or the like, and reference numeral 14 indicates a hanging jig for the roof panel 6, which can be removed from the roof panel 6 by work from the internal temporary scaffolding 4.

That is, as shown in FIG. 3, the hanging jig 14 includes a first member 14a that is removably attached to both sides of the base frame portion of the roof panel 6 with connecting bolts 15, and a joint width between the roof panels 6. The second member 14b has a flat plate-like second member 14b formed of a plate material thinner than the first member 14a. A notch 14d is formed.

After the construction of the roof panel 6 is completed and the internal temporary scaffolding 4 is removed, scaffolding for ceiling finishing work (not shown) is installed on the floor inside the building, and work on the scaffolding and permanent catwalk 5 is carried out. As shown in FIG. 4, a horizontal beam 16 serving as a base for ceiling hanging bolts is installed between the lower ends of the hanging fittings 9 of the adjacent permanent catwalks 5, and a hanging hole 7 is installed on the horizontal beam 16. Then, the ceiling base 18 and ceiling equipment 19 such as air conditioning ducts are attached, and the ceiling board 7 is attached to the ceiling base 18.

The building shown is a large-span lecture hall, and the roof is a gable roof of uniform height, but the ceiling is designed with consideration to the acoustics in the room. For this reason, the height of the ceiling board 7 increases from one gable side to the other gable side, and the height of the catwalk 5 and the length of the hanging fittings 9 also correspond to this. Therefore, in areas where the length of the hanging bracket 9 is short, there is no problem in attaching up to the permanent catwalk 5 to the beam steel frame, but in areas where the height of the ceiling board 7 is low,
The length of the hanging bracket 9 is long, and in order to attach it to the steel beam first, a tall frame is required to place the steel beam on the ground, making various operations on the ground complicated. Therefore, in this embodiment, as described above, only the upper part 9a of the hanging fittings 9 necessary for constructing the internal temporary scaffolding 4 is attached first, and the lower part 9b and the permanent catwalk 5 are attached.
is separately lifted by a crane or the like and connected to the upper portion 9a. The main cat walk 5 and the lower part 9b of the hanging fitting 9 are lifted up and the upper part 9 is lifted up.
It is also possible to perform the work of connecting to a after the construction of the roof panel 6.

According to the above configuration, since the hanging bolts 17 are attached to the horizontal beams 16 installed between the lower ends of the hanging fittings 9 of the permanent catwalk 5, there is a large space between the roof surface and the ceiling plate 7. Despite having a double ceiling structure with without damaging it.

FIG. 5 shows another embodiment of the invention. In this embodiment, on the ground, a bracket 8 for attaching a roof panel, a permanent catwalk 5 to be installed in the ceiling, and a structure for suspending and supporting the permanent catwalk 5 are attached to the beam steel frames 3a and 3b in advance. A plurality of pairs of hanging fittings 9 and an internal temporary scaffolding 4 constructed between the upper parts of the hanging fittings 9 are attached, and the beam steel frames 3a and 3b are lifted with a crane or the like to construct the steel frame. The roof panel 6 is then lifted up by a crane or the like and attached to the bracket 8 by work from the internal temporary scaffolding 4. The other configurations are the same as in the previous embodiment. This embodiment is particularly effective when the distance between the roof and the ceiling is relatively narrow and the ceiling height is uniform.

〔Effect of the invention〕

Since the present invention has the above-described configuration, it can achieve the following effects.

Since the internal temporary scaffolding is attached to the steel beam on the ground in advance, the internal temporary scaffolding is completed by lifting the steel beam with a crane or the like and erecting the steel frame. (tacked scaffolding) can be obtained, and the safety of steel-framed ancient poems can be improved.

By performing the steel frame construction, the internal temporary scaffolding is completed, so the roof panel installation process can be started immediately after the steel frame construction is completed, thereby shortening the construction period.

According to claims (2) and (3), in addition to the above-mentioned effects, the hanging fittings for suspending and supporting the permanent catwalk are used as members for attaching the internal temporary scaffolding to the beam steel frame. As a result, the amount of temporary construction materials can be reduced, resulting in labor savings and cost reductions in temporary construction work.

In particular, according to claim (4), a bracket for mounting the roof panel is used as a hanging member for the catwalk, thereby making it possible to further save labor and reduce costs.

[Brief explanation of drawings]

Figure 1 is an overall schematic diagram showing the roof construction method, Figure 2 is a perspective view of the main parts, Figure 3 is a vertical sectional view of the main parts during construction, and Figure 4 shows the structure of the constructed roof. FIG. 5 is a vertical cross-sectional view of the main part showing another embodiment of the present invention. 3a, 3b...beam steel frame, 4...internal temporary scaffolding, 5.
・・Permanent catwalk, 6・Roof panel, 8・
... Bracket, 9... Hanging fitting, 9a... Upper part, 9b... Lower part.

Claims (4)

[Claims] (1) Brackets for attaching roof panels and internal temporary scaffolding were attached to the steel beam on the ground, and the steel beam was hoisted with a crane to construct the steel frame. After that, the steel beam was lifted with a crane, etc. A method for constructing a roof, characterized in that the roof panel is attached to the bracket by work from the internal temporary scaffolding. (2) On the ground, install brackets for attaching roof panels to the beam steel frame, and the upper part of multiple pairs of hanging metal fittings for suspending and supporting the permanent catwalk installed in the ceiling, and between the upper parts. The steel beams are then lifted with a crane, etc. to construct the steel frame.Then, the lower part of the main catwalk and the lifting fittings are lifted with a crane, etc., and the lower part of the A method for constructing a roof, characterized in that the roof panel is connected to the upper part by working from the internal temporary scaffolding, and the roof panel lifted by a crane or the like is attached to the bracket by working from the internal temporary scaffolding. . (3) On the ground, a bracket for attaching the roof panel to the beam steel frame, a permanent catwalk installed in the ceiling, multiple pairs of hanging metal fittings for suspending and supporting the permanent catwalk, and the hanging metal fittings. An internal temporary scaffold constructed between the upper parts is attached, and the beam steel frame is hoisted by a crane or the like to construct the steel frame. After that, the roof panels lifted by a crane or the like are worked from the internal temporary scaffolding. A method for constructing a roof, characterized in that the roof is attached to the bracket by: (4) The roof construction method according to claim 2 or 3, wherein the upper portion of the hanging fitting is suspended from both ends of the bracket.