JPH07217221A - Long span ceiling device and construction method thereof - Google Patents

Abstract

PURPOSE:To facilitate the construction work, by stretching tension members spreading and supporting a tent between posts arranged in the diametral direction erected at every appropriate interval so as to surround a construction position of a building body. CONSTITUTION:Upper tension members 6a and lower tension members 6b made of steel wires are radially arranged so as to cross together at the center and a center pole 7 is assembled at the crossed center. The tension members 6a, 66 are tensed by an upper tension ring 8a and a lower tension ring 8b. Next, posts 4 are erected at every appropriate distance to make a circle so as to surround an underground wall 1. The central pole 7 of the tension members 6a, 6b hung between posts 4 after the above procedure is vertically pulled up by the stay rope 12 vertically hung. Next, the tension members 6a, 6b are laid by turns in the peripheral direction of the surrounding positions of the posts 4 around the pole 7, between a pair of posts 4 arranged in the diametral direction. In this way, a light and stable structure can be obtained and the construction can be facilitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a long span canopy facility that can be used as a roof for preventing rain and hot weather in construction work.

[0002]

2. Description of the Related Art For example, in the construction of an LNG underground storage tank, a caisson may be used for the wall of the storage tank body. And
After the caisson is completed, the bottom slab concrete is cast in two steps. It is desirable to prevent the deterioration of concrete quality due to rainfall during casting and curing and cold joints under hot weather.

As a countermeasure against rain and scorching sun such as underground tank construction where the construction area is relatively limited, a tent may be installed. Such a tent is one in which a stay is taken from the inner surface of the side wall of the tank, and the tent is stretched like a morning glory with a steel frame.

[0004]

The above-mentioned conventional concrete pouring / curing tents have a maximum diameter of 50 to 60 meters, and most of them are mainly made of steel frame, which increases the weight of steel material. However, as the construction cost increases, the construction period required for erection becomes longer, making it unsuitable as an all-weather temporary facility.

The object of the present invention is to eliminate the disadvantages of the above-mentioned conventional example, to install a long span canopy easily regardless of the presence of a skeleton, to provide a lightweight and stable canopy facility for a long span, and a method for constructing the same. To provide.

[0006]

In order to achieve the above-mentioned object, the present invention extends a tent membrane between struts arranged in a diameter direction of a surrounding flexible portion of struts which are erected at appropriate intervals so as to surround a construction site of a skeleton. A tension material to support is stretched, and this tension material is arranged radially so as to intersect at the center, and it is composed of upper and lower tension materials with a center pole incorporated at the center of the intersection, and the center pole The upper and lower diamond-shaped tension members that are installed in the diagonal position are suspended by a crane in a horizontal state, and the tension members are lined up in the diameter direction of the surrounding flexible portion of the columns that are erected at appropriate intervals so as to surround the work site. Stretch it over one of the stanchions, then raise the center pole vertically, and center the center pole around the tension material that was hung first, then the upper and lower tension materials in order of diameter. It is an Abstract that arranged radially over me between struts arranged in.

[0007]

According to the present invention as set forth in claim 1, it is composed of a center pole (compression material) and a tension material of a wire (or rod) made of steel. Since it is a lightweight and stable structure, it floats vertically due to the wind as well as its own weight. The span can be up to 100 meters.

Further, the tent roof can be installed from the outside of the skeleton such as the side wall of the tank, and the tent roof can be used for almost the entire construction period from civil excavation to completion of the skeleton.

According to the second aspect of the present invention, in addition to the above action, the tension material and the center pole can be simultaneously and safely built in, and the construction can be rationalized.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a vertical sectional side view showing an embodiment of a long span canopy facility of the present invention, FIG. 2 is a plan view of the same as above, and FIG. 3 is a front view of the same, which is used as a curing facility for an underground tank.

First, the constituent parts of the underground tank will be described. In the figure, 1 is an underground wall, 2 is a tank side wall to be installed inside, and 3 is a tank bottom plate.

Supports 4 are erected at appropriate intervals so as to surround the construction site of the tank side wall 2 which is a skeleton. In the drawing, the columns 4 are erected so as to line up in a circle next to the side wall of the tank which is circular.

A tension material for supporting the tent film 5 is stretched between the struts 4 of the struts 4 which are arranged in the diametrical direction of the surrounding flexible portions of the struts 4, and the tension material is the upper tension material 6a. The lower tension member 6b.

Further, the upper tension member 6a and the lower tension member 6b are radially arranged so as to intersect at the center, and the center pole 7 is incorporated at the center of the intersection. The center pole 7 has an upper tension ring 8a and a lower tension ring 8b on the upper and lower sides, and the upper tension ring 8a and the lower tension ring 8b tension the upper tension member 6a and the lower tension member 6b.

The end portions of the tent film 5 extended on the upper tension member 6a are flipped up in a curved shape between the upper tension members 6a, and an opening 9 for going in and out of the tank side wall 2 is provided there. Secured. In addition, an eyelid tent 10 that opens and closes like a hood may be provided in the opening 9 as a door member.

Next, the construction method will be described with reference to FIGS. 4 to 8. First, as shown in FIG. 4, it is assumed that a pair of columns 4 arranged in the diametrical direction are set up as a ground set. Center pole 7 in the center so that it is laid between 4
The upper tension member 6a and the lower tension member 6b, which have a diamond shape and are installed in a diagonal position, are hung horizontally by a crane. In the figure, 11 indicates these upper tension members 6a.
It is a winch for pulling in and tensioning the lower tension member 6b.

Then, as shown in FIG. 5 and FIG.
Are erected in a circular shape so as to surround the construction site at appropriate intervals. Around this, tension material 6 hung between the columns 4
The center pole 7 at the center of a and the lower tension member 6b is vertically raised by a stay rope 12 which is vertically hung.

Then, as shown in FIG. 7, a pair of diametrically-arranged circumscribing portions of the support column 4 are centered on the center pole 7 at the center of the tension member 6a and the lower tension member 6b, which are initially applied. The upper tension member 6a and the lower tension member 6b are bridged between the columns 4. This is one in which the upper and lower tension members 6a and 6b are sequentially arranged radially with the center pole 7 as the center.

The tent film 5 may be incorporated in the upper tension member 6a together with the center pole 7 in the ground structure shown in FIG. 4, and may be expanded later. After the materials are arranged, they may be spread on the upper tension material 6a.

After the tent film 5 has been stretched, tension is provided by the turnbuckle mechanism (not shown) at the end of each tension member.

[0021]

As described above, according to the canopy equipment for long and large spans and the construction method thereof of the present invention, long spans can be easily installed, and the finished product is lightweight and stable. Moreover, it can be installed regardless of the existence of the skeleton, and can be used for almost the entire construction period from excavation to completion of the skeleton.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an embodiment of a long span canopy facility of the present invention.

FIG. 2 is a plan view showing an embodiment of a long span canopy facility of the present invention.

FIG. 3 is a front view showing one embodiment of a long span canopy facility of the present invention.

FIG. 4 is a perspective view showing a first step of a method for constructing a long span canopy facility of the present invention.

FIG. 5 is a perspective view showing a second step of the method for constructing a long span canopy facility of the present invention.

FIG. 6 is a perspective view showing a third step of the method for constructing a long span canopy facility of the present invention.

FIG. 7 is a perspective view showing a fourth step of the method of constructing a long span canopy facility of the present invention.

FIG. 8 is a perspective view showing a fifth step of the method for constructing a long span canopy facility of the present invention.

[Explanation of symbols]

1 ... Underground wall 2 ... Tank side wall 3 ... Tank bottom plate 4 ... Strut 5 ... Tent film 6a ... Upper tension material 6b ... Lower tension material 7 ... Center pole 8a ... Upper tension ring 8b ... Lower tension ring 9 ... Opening 10 ... Eye lid Tent 11 ... Winch 12 ... Stay rope

Claims (2)

[Claims] 1. A tension member for supporting a tent film is stretched between the pillars arranged in the diametrical direction of the surrounding flexible portion of the pillars standing upright at appropriate intervals so as to surround the construction site of the frame, and the tension material is Canopy equipment for long spans, which is composed of upper and lower tension members arranged in a radial pattern so that they intersect at the center, and a center pole is incorporated at the center of the intersection. 2. A pillar in which upper and lower diamond-shaped tension members having a center pole installed in a diagonal position in the center are suspended by a crane in a horizontal state, and the tension members are erected at appropriate intervals so as to surround the construction site. Straddle one of the struts arranged in the diametrical direction of the encircling flexible part, then raise the center pole vertically, and center the center of the tension material that was hung first, and the upper and lower tension materials in order. A method of constructing a long span canopy facility characterized by arranging them in a radial pattern by straddling them between columns that are aligned in the same direction.