JPH0262667B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a temporary structure used mainly for curing a relatively large-scale structure when it is constructed.

[Problem that the invention seeks to solve]

BACKGROUND OF THE INVENTION In order to carry out construction work on civil engineering and architectural structures that occupy large spaces without being affected by the weather and to protect the structures, temporary structures need covers to protect them.

Typical coverings to protect structures include those that span the entire structure with an air tent, and those that place a dome on top of a temporary structure, but from the standpoint of functionality as a temporary structure, It is preferable that the cover can be freely attached and detached. Considering the construction conditions such as the weather conditions at the construction site and the convenience of transporting construction equipment, materials, etc. into the temporary structure, it is necessary that the cover be easy to install and remove in order to increase construction efficiency. Ru. If the cover can be easily attached and removed, the transition from construction work on one structure to the next will be carried out quickly, shortening the construction period and reducing construction costs, and it will also be possible to use natural lighting for curing purposes. It is advantageous for the use of

Among the above protective equipment, dome-based covers are placed on top of temporary structures and can be attached to and removed from the temporary structure, but the drawback is that the dome is heavy and does not damage the frame. It is a heavy burden, difficult to attach and detach, and is not suitable for frequent use.

This invention was made based on these circumstances, and aims to shorten construction time and save costs by reducing the weight of the covering for a temporary structure.

[Means for solving problems]

In order to meet the above requirements for a temporary structure, the present invention uses a roof with a double air membrane structure as a cover to protect the structure, and employs a method in which the roof is removably installed on the top of a steel frame.

In order for the roof to be easy to put on and take off, it must be lightweight, and an air membrane structure is suitable for this purpose.Furthermore, since a single membrane structure would require increased indoor pressure, the roof should have a double membrane structure. And so.

The present invention is characterized by a roof structure, in which a double membrane is stretched above and below a surrounding beam that forms the framework, and brackets are installed around the outer circumference of the surrounding beam for attachment to and removal from the steel frame. It is configured by attaching it to. In this bracket, the roof has a structure separate from the frame, which allows the roof to be installed and removed while maintaining air pressure within the double membrane.

〔Example〕

The present invention will be described below with reference to drawings showing one embodiment.

This temporary structure is constructed by installing a double air membrane structure roof B on top of a steel frame body A, as shown in FIG.

Double air membrane structure roof B (hereinafter referred to as double membrane roof B) has a frame whose corners are reinforced with horizontal braces 1, with membranes 3 doubly stretched over the upper and lower parts of the surrounding beams 2, and the surrounding beams 2
Attach a bracket 4 to the outer periphery of the double membrane 3,
It is formed by pumping compressed air into the

The membrane 3 is attached to the pipe-shaped peripheral beam 2 as shown in FIG.
It is fixed by wrapping the top and bottom of the sheet independently, but
When equipment such as a rainwater drainage device or a snow melting device is installed on the surrounding beam 2, it is fixed to a plate 5 or the like attached to the inside of the surrounding beam 2 as shown in FIG.

The bracket 4 serves as a connecting part when the double membrane roof B is installed on the upper part of the steel frame body A, and a lifting hole 4a is formed above the bracket 4 for lifting the double membrane roof B when it is attached or removed. They are attached to the outer periphery of the surrounding beam 2 at several locations as shown in Fig. 4.

Pressurization into the double membranes 3, 3 is mainly carried out by attaching a blower 6 and a blower duct 7 to the horizontal brace 1 and sucking in compressed air.

By the way, especially when installing a rainwater drainage system, the drainage pipe 8 is inserted into the surrounding beam 2 as shown in Fig. 3, and for snow melting equipment, either a sprinkler is installed in the surrounding beam 2, or a double membrane 3, 3 is installed. Provide this by circulating warm air inside or by using heater tape.

The double membrane roof B formed as described above is attached to the steel frame A and removed from the steel frame A while applying air pressure to the double membranes 3 and 3. The wires 9 are passed through the lifting holes 4a of each bracket 4 to attach the double membrane roof B as shown in FIG.
It is tied to a lifting jig 10 on the central part of the body, and the lifting jig 10 is lifted by a crane 11 for work. FIG. 7 shows a working situation in a reactor containment vessel construction work as an embodiment of the present invention.

In this way, the work of attaching and removing the double membrane roof B is carried out not only at the start and end of construction, but also frequently, such as when carrying in construction equipment and materials during construction.

〔Effect of the invention〕

The present invention is constructed as described above, and since the double air membrane structure roof as a cover for a structure is lightweight, the following effects are brought about.

Since the load on the steel frame is reduced, the amount of steel used can be reduced, leading to cost savings.

The roof can be equipped with rainwater drainage equipment, snow melting equipment, etc., and the roof can be easily attached and detached, allowing work to be carried out regardless of climate conditions and in response to changes in weather.

Since the roof can be attached and detached repeatedly, the construction work can be moved quickly and the efficiency of the construction work will be improved.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view showing an outline of the present invention, FIGS. 2 and 3 are sectional views showing details of the attachment part of a double air membrane structure roof to a steel frame body, and FIG.
The figure is a plan view showing the inside of a double air membrane structure roof.
Fig. 5 is a sectional view showing the outline of the inside of the roof, Fig. 6 is a plan view showing the method of lifting the roof, and Fig. 7 is an embodiment of the present invention in which the present invention is used for construction work of a reactor containment vessel. FIG. A... Steel frame body, B... Double air membrane structure roof,
1...Horizontal brace, 2...Perimeter beam, 3...Membrane,
4... Bracket, 4a... Lifting hole, 5...
Plate, 6...Blower, 7...Blower duct, 8
... Drain pipe, 9 ... Wire, 10 ... Lifting jig, 11 ... Crane.

Claims (1)

[Claims] 1 Attach a bracket to the outer periphery of the perimeter beam reinforced with horizontal braces, and attach and detach the double air membrane structure roof, which is made up of double membranes on the top and bottom of the perimeter beam, to the top of the steel frame body using the bracket. A temporary structure that is characterized by being able to be installed freely.