JPH0692702B2 - Temporary roof device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Purpose of the Invention] (Field of Industrial Application) The present invention is for avoiding snow, wind, and rain used in large-scale and heavy construction work such as nuclear power plants. The present invention relates to a temporary roof device, and more particularly to a temporary roof device using an air film roof formed by filling a bag-shaped flexible film with air.

(Prior art) Of the construction work of nuclear power plants, construction work such as construction work, containment work, etc., which must be carried out outdoors due to structural and construction procedures, is affected by natural conditions such as snow, rain, and wind. Will be received. In particular, the influence is great on the Japan Sea side and in the heavy snow areas of northern Japan, and the operation rate of construction is extremely poor in winter, which is a factor of delaying the process or increasing the construction cost due to a decrease in the operation rate. .

Therefore, conventionally, as shown in FIG. 4, a temporary roof in which a steel frame 1, a deck plate 2, a curing sheet 3, an air film roof 4 and the like are combined prior to the start of the main construction work, the containment work, etc. The construction method is used to completely cover the entire building with the equipment and to proceed with the construction in an environment that is not affected by external natural conditions.

By the way, in this type of construction method, two types of methods are adopted as the method of loading the materials, and the lightweight materials are loaded from the side by the monorail 5 erected using the steel frame 1 as shown in FIG. And the storage container 6 shown in FIG.
For heavy materials such as the above, the crane 7 is used for loading from above. For this reason, the air film roof 4 is of a removable type for mounting heavy materials.

That is, when a heavy object such as the storage container 6 is mounted,
First, as shown in FIG. 5, the air film roof 4 is removed using the crane 7 prior to the loading of the heavy object, and the removed air film roof 4 is temporarily placed on the temporary stand 8 by the crane 7 to load the heavy object. After mounting, the air film roof 4 on the temporary stand 8 is lifted by the crane 7 and attached.

(Problems to be Solved by the Invention) In the conventional temporary roof apparatus having the above configuration, since the air film roof 4 is a detachable type and the air film roof 4 itself is a heavy object, it takes a long time to remove and install it. It takes a long time, and the work performed with the air film roof 4 removed requires a heavy load, and thus requires a long time. For this reason, the state in which the air film roof 4 is removed becomes long, and is easily affected by the outside. There is a desire to reduce this.

Further, the air film roof 4 must be temporarily placed on the outdoor temporary placing table 8 at the time of removal, but since it becomes a heavy object by itself,
The temporary placing table 8 needs to be arranged in the reach corresponding to the lifting capacity of the crane 7. However, at a site where the outdoor material yard around the building is small, it is difficult to secure a temporary storage space, which limits the material yard.

The present invention has been made in consideration of such points, and the opening / closing operation of the air film roof can be easily performed, the opening time of the air film roof can be suppressed to a necessary minimum, and the material yard (storage space) can be used.
It is an object of the present invention to provide a temporary roof device that does not have the risk of limiting

[Structure of Invention]

(Means for Solving the Problems) In the present invention, the air film roof is configured by a pair of air film structure roofs that are abutted at the central portion, and each air film structure roof is moved laterally by a drive mechanism. The feature is that it can be opened and closed.

(Operation) In the temporary roof device according to the present invention, by driving the drive mechanism in the opening direction, both air film structure roofs move in the opening direction and the air film roof is opened. Therefore, a crane is used to load heavy objects. On the other hand, when the driving mechanism is driven in the closing direction after completion of the work, both air film structure roofs move in the closing direction, and the air film roof is closed. Therefore, opening and closing of the air film roof is extremely easy and highly safe, and the time during which the air film roof is opened and closed can be suppressed to the necessary minimum. In addition, since the air film roof has a two-part structure, each air film roof is lightweight and has a reduced travel distance.
It can also be applied to buildings with relatively narrow outer steel frames.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

In FIG. 1, reference numeral 10 is a steel frame 1, a deck plate 2,
This is a temporary roof device configured by combining the curing sheet 3, the air film roof 4, and the like, and a building (not shown) is completely covered by the temporary roof device 10.

The air roof 4 is composed of a pair of air film structure roofs 11a and 11b that are abutted at the central portion as shown in FIG. 1, and the air film structure roofs 11a and 11b are slid laterally to open and close. You can do it.

Each of the air membrane structure roofs 11a and 11b is provided with a flexible bag-shaped membrane 12 made of polyester as shown in FIG. 2 and a compression ring 13 arranged on the periphery thereof.
A pressure blower 14 for expanding the membrane 12 and a snow melting fan heater 15 are arranged inside the membrane 12.

Further, as shown in FIG. 3, rails 16 laid on the top of the temporary roof device 10 are provided on both sides of each air film structure roof 11a, 11b.
Rollers 17 that roll over are provided respectively, and each air film structure roof 11a, 11b is attached to the rail 16 by a drive device 18 arranged at the outer end of the rail 16 as shown for the air film structure roof 11a in FIG. Therefore, it is designed to slide laterally.

Further, as shown in FIG. 3, rain-snow-preventing covers 19a, 19b which overlap each other at the time of abutment are erected at the abutting ends of the air film roofs 11a, 11b, respectively.
It is taken into consideration that rain and snow accumulated in the recesses do not fall inside when the air film roof 4 is opened and closed.

Next, the operation of this embodiment having such a configuration will be described.

Prior to the start of the main construction work, containment work, etc., first, a temporary installation roof device 10 was constructed by combining the steel frame 1, deck plate 2, curing sheet 3, air film roof 4, etc.
Completely covers the entire building. Then, the lightweight material is carried in from the side of the temporary roof device 10 by a monorail (not shown) as in the conventional case.

On the other hand, heavy materials such as the storage container 6 are loaded from above by a crane (not shown) with the air film roof 4 opened.

That is, when loading a heavy object, first, the drive device 18 is driven in the opening direction to move the air film structure roofs 11a and 11b to the rail 16a.
Then, the air film roof 4 is opened by sliding it from the solid line position shown in FIG. 1 to the chain line position.

At this time, since the air film roof 4 has a two-divided structure and the moving distance a required for full opening is reduced, the steel frame width b required for moving can be narrowed to a ≦ b. That is, when the air film roof 4 has an integral structure, the steel frame width b required for movement must be at least 2a = b, but it can be halved by adopting a two-part structure. it can. Therefore, it can be applied even to a building having a relatively narrow steel frame width. Also, by adopting a two-part structure, each air film structure roof 11a, 11
The weight of b is almost halved, and the drive device 18 and the like can be simplified.

When the air film roof 4 is opened in this manner, a heavy object such as the storage container 6 is loaded from the upper portion, and after the work is completed, the drive device 18 is driven in the closing direction to close the air film roof.

At this time, since the air film roof 4 is opened and closed by the drive device 18, the time required for opening and closing can be significantly shortened as compared with the conventional detachable type, and the time when the air film roof 4 is opened can be minimized. You can keep it to the limit. For this reason, it is possible to reduce loss such as interruption of construction due to sudden change in weather.

Further, since the covers 19a, 19b are provided at the abutting ends of the air film roofs 11a, 11b, it is possible to prevent rain and snow from falling inside when the air film roof 4 is closed and opened. Further, since the opening / closing work of the air film roof 4 can be performed in parallel with the loading work of the heavy object by the crane, the working time can be further shortened.

In the above embodiment, the case where both air film structure roofs 11a and 11b slide horizontally has been described, but both air film structure roofs 11a and 11b may be slid laterally by abutting in a mountain shape. .

Further, in the above-mentioned embodiment, the construction work of the nuclear power plant has been described as an example, but the present invention can be widely applied to the construction work of handling large-scale heavy objects.

〔The invention's effect〕

INDUSTRIAL APPLICABILITY As described above, according to the present invention, the air film roof is configured by a pair of air film structure roofs that are abutted at the central portion, and each air film structure roof can be opened and closed by laterally moving by a drive mechanism. Since it is easy to open and close the air film roof, the opening time of the air film roof can be kept to the minimum required, and the loss due to the interruption of construction due to sudden changes in weather can be reduced. Moreover, since it is not necessary to remove the air film roof, a temporary stand is not required, and there is no risk of limiting the material yard. Furthermore, since a rain and snow cover is provided, it is safe to prevent rain and snow from falling inside when opening and closing the air film roof.

[Brief description of drawings]

FIG. 1 is a block diagram of a temporary roof apparatus showing an embodiment of the present invention, FIG. 2 is a block diagram showing an air film structure roof, FIG. 3 is a detailed view of a main part of FIG. 1, and FIG. FIG. 5 is a perspective view showing the temporary roof device of FIG. 5, and FIG. 5 is an explanatory view showing a procedure for mounting a heavy load in the conventional device. 1 ... Steel frame, 2 ... Deck plate, 3 ... Curing sheet, 4 ...
Air film roof, 6 ... Containment vessel, 7 ... Crane, 10 ... Temporary roof device, 11a, 11b ... Air film structure roof, 12 ... Membrane, 13 ... Compression ring, 16 ... Rail, 18 ... Drive device, 19a,
19b… Cover.

Claims (2)

[Claims] 1. A temporary roof device in which an air film roof formed by filling air into a bag-shaped flexible film is installed above an installation space in which a heavy object is installed using a crane, A temporary roof device, characterized in that the air film roof is composed of a pair of air film structure roofs that are abutted at the central portion, and each air film structure roof can be opened and closed by being moved laterally by a drive mechanism. . 2. The temporary roof apparatus according to claim 1, wherein each of the air film structure roofs has rain and snow covers which overlap each other at the time of butting.