JP3341166B2 - Dome roof and method of constructing dome roof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dome roof constructed in a dome shape and a method for constructing a dome roof.
The present invention relates to a dome roof having a single-layer lattice structure and a method for constructing a dome roof.

[0002]

2. Description of the Related Art In general, a roof constructed in a large space such as a stadium, a multipurpose hall or an experimental building is constructed by combining a plurality of beams 1 of substantially the same size as shown in FIGS. A dome roof 2 having a single-layer lattice structure is known. The dome roof 2 includes an iron dome using iron beams 1, 1,..., An aluminum dome using aluminum beams 1, 1,... Or a laminated wood (wood) dome using laminated wood (wood). Etc.

Conventionally, this type of dome roof 2 has been constructed by, for example,
A plurality of supports and scaffolds are temporarily provided at the erection position of the dome roof 2, and a plurality of small beams 1, 1 ... are erected between the corresponding supports while being lifted by a crane or the like. Were joined in a lattice shape to build the entire dome roof.

[0004]

By the way, the dome roof 2 having the above structure has an advantage that the weight can be reduced, but it is difficult to increase the scale because the out-of-plane rigidity of the entire frame is relatively low. Further, the height of the frame has to be increased more than necessary in order to increase the out-of-plane rigidity, which is uneconomical. In order to construct the dome roof 2, a large number of supports and scaffolds are temporarily provided, and a worker can work on each beam 1,
1 and 2 must be joined, which requires a great deal of expense for temporary construction such as shoring, and also has a problem in terms of safety for workers.
There was a problem that management of 1 ... had to be performed.

The present invention has been made in view of the above circumstances, and is an economical dome roof which ensures good out-of-plane rigidity, and a dome roof which is excellent in safety and can reduce temporary costs. The purpose is to provide a construction method.

[0006]

According to a first aspect of the present invention, there is provided a dome roof in which a plurality of girders are arranged in a lattice shape, and a plurality of girders are formed on the surface of the roof divided into polygons by the girders. A roof unit constructed by arranging a plurality of small beams in a lattice shape in a polygonal jointed frame is disposed, and the frames of the roof unit are directly joined to each other to form a roof. A high-strength rib is formed, and each frame body forming the rib and the large beam are directly joined. The method for constructing a dome roof according to a second invention is the method for constructing a dome roof according to the first invention , wherein a plurality of girders are arranged in a lattice shape, and the roof is divided into polygons by the girds. In the plane, a roof unit constructed by arranging a plurality of small beams in a lattice shape in a frame body in which a plurality of small beams are joined in a polygonal shape is arranged in advance, and a frame body of the roof unit is provided. The present invention is characterized in that ribs having higher strength than the small beams are formed by directly joining each other, and each frame body forming the ribs and the large beams are directly joined.

[0007]

According to the dome roof of the first invention, since the frames of the respective roof units are directly joined to each other to form high-strength ribs, the ribs greatly increase the out-of-plane rigidity of the dome roof. To be improved. Further, the ribs formed by directly joining the frame bodies of the respective roof units are further directly joined to the girder to form higher-strength ribs, and the out-of-plane rigidity of the dome roof is greatly improved. Second
According to the construction method of the dome roof of the invention of the invention , since the roof unit constructed in advance is arranged and their frames are directly joined to each other, the number of assembly parts at the construction site is greatly reduced, and at the site, Work at height is reduced. In addition, since the ribs are formed by directly joining the frames of the respective roof units, a dome roof having high out-of-plane rigidity is constructed. In addition, the pre-constructed roof units are respectively arranged on the roof surface sectioned by the girders arranged in a lattice shape, and the frames are directly joined together, and the frames are also attached to the girders. The direct joining greatly reduces the number of assembly parts on the construction site and reduces work at high places on the site. Further, since the ribs that directly join the frames of the respective roof units are further directly joined to the girder, a dome roof with high out-of-plane rigidity is constructed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A dome roof and a method for constructing a dome roof according to the present invention will be described below with reference to the drawings. Note that the same reference numerals are given to the same structural parts as in the related art, and description thereof will be omitted. 1 to 3, reference numeral 11 denotes a dome roof of the first reference example . The dome roof 11 has a plurality of girders 12,
12 are arranged in a lattice shape. The structure of the dome roof 11 is divided into a plurality of triangles (polygons) by the girders 12, 12,..., And a plurality of small beams are included in the structure of the dome roof divided into these triangles. 1,
Are arranged and joined in a lattice shape. The rigidity of the girders 12, 12,... Is higher than that of the girders 1, 1,..., And in this reference example, as shown in FIG.
As 2, a beam having a larger diameter than the small beams 1, 1,... And having high rigidity is used.

That is, according to the dome roof 11 of this reference example, the large beams 12, 1 having higher rigidity than the small beams 1, 1,.
2 becomes the rib of the dome roof 11,
Compared with the conventional dome roof 2 constructed with only 1 ..., the out-of-plane rigidity can be greatly improved without increasing the construction height more than necessary, and a large-scale dome roof can be constructed. It can be.

Next, the structure of the dome roof of the second embodiment will be described. As shown in FIG. 5, the dome roof 21
.. Have a structure in which a plurality of roof units 22, 22,... These roof units 22, 22,..., As shown in FIG.
A plurality of small beams 1, 1... Are arranged in a lattice shape in a frame constructed by joining triangular (polygonal) shapes. And these roof units 22, 22
As shown in FIG. 7, the frames forming the sides of the dome roof 21 are directly joined to each other to form a dome roof 21. The directly joined frames are connected to the ribs of the dome roof 21 by themselves. It consists of.

Next, the dome roof 21 of the second reference example will be described .
Will be described with reference to FIGS. (1) First, a tension ring 24 is installed on the top end of the side wall S of the structure on which the dome roof 21 is constructed. (2) Further, on the inner peripheral side of the installed tension ring 24, the roof units 22, 22,.
Are arranged along the inner circumference of the tension ring 24, and the sides of the roof units 22, 22.
(See FIGS. 8 and 9). Here, the joined roof units 22, 22,... Are supported by temporary supports A, A,.

The roof units 22, 22,... Are lifted to a predetermined position by a crane or lift-up from above the temporary support A. In addition, as shown in FIG.
A tie bar (reinforcing member) 25 is attached as needed to prevent deformation before or during the installation of the roof unit 22.

(3) After the roof units 22, 22,... Are joined to the inner peripheral side of the tension ring 24, the other roof units 22, 22,. Roof unit 2
.. Are joined together (see FIGS. 10 and 11). (4) Next, the temporary supports A, A ... are erected on the inner peripheral side of the tension ring 24, and other roof units are arranged along the circumferential direction on the inner peripheral side of the already constructed roof units 22, 22 .... Are arranged, and these roof units 2
.. Are joined together (see FIGS. 10 and 11).

(5) By repeating the above operations (3) and (4), arranging the roof units 22, 22... On the entire inner peripheral side of the tension ring 24, and temporarily constructing the dome roof 21, Remove support A, A ...

According to the dome roof 21 of the second reference example , by joining the sides of the respective roof units 22, 22,..., The joined sides become high-strength ribs, Compared with the conventional dome roof 2 constructed only with 1, 1, ..., the out-of-plane rigidity can be greatly improved without increasing the construction height more than necessary, and the construction of a large-scale dome roof Can be made possible.

Further, according to the method of constructing the dome roof 21, the dome roof 21 is constructed by combining the previously constructed roof units 22, so that the labor of the construction work is greatly reduced. Can be. Further, work at high places can be reduced, and danger to workers can be reduced. Further, the amount of the temporary material used can be reduced, and the cost for the temporary material can be significantly reduced. Moreover, the number of parts managed on site can be significantly reduced,
Management of parts can be made extremely easy.

Next, the structure of the dome roof according to the embodiment of the present invention will be described. As shown in FIG.
Are provided in a lattice shape. The structure of the dome roof 31 is divided into a plurality of triangles (polygons) by these girders 32, 32..., And the structure of the dome roof 3 divided into triangles has a triangle (polygon) shape. ) -Shaped roof unit 22, 2
2 ... are arranged. Then, as shown in FIG.
The frame members on the side portions of the roof units 22, 22,... And the frame members and the girders 32 are directly joined.

Next, a construction method for constructing the dome roof 31 of this embodiment will be described with reference to FIGS. (1) First, the tension ring 24 is installed on the top end of the side wall S of the structure on which the dome roof 31 is constructed. (2) Further, on the inner peripheral side of the installed tension ring 24, large beams 32, 32,. When the girders 32, 32,... Are erected, the temporary supports A, A,.
.. While supporting the beams 32, 32.
5 and FIG. 16). When the erection of the girders 32, 32,... Is completed, the erection supports A, A,.

(3) The erected girders 32, 3
The roof unit 2 previously constructed from the inner side of the dome roof 31 to be constructed into a triangular surface sectioned by 2.
2, 22, ..., and each roof unit 22,
22 and the side portions of the roof units 22, 22 are joined to the girders 32, 32 (see FIGS. 17 and 18). In this case, the crane or the girder 3
The roof units 22, 22,... Are lifted to predetermined positions by lift-up or the like from the joints of 2, 32,. (4) The work of (13) is repeated, and
By arranging the roof units 22, 22... On all the triangular construction surfaces partitioned by 32, a dome-shaped dome roof 31 is constructed on the inner peripheral side of the tension ring 24.

According to the dome roof of this embodiment , the ribs are formed by directly joining the frames of the respective roof units 22, 22,. By joining directly to
This joint becomes a rib with higher strength, and as with the dome roofs 11 and 21 of the reference example , the construction height is made more than necessary compared to the conventional dome roof 2 constructed only with the small beams 1, 1,. Without increasing the height, the out-of-plane rigidity can be significantly improved, and a large-scale dome roof can be constructed.

According to the method of constructing the dome roof 31, as in the method of constructing the dome roof 21 of the second embodiment , the dome roof 31 is constructed by combining previously constructed roof units 22, 22,. 31 is constructed, so that the labor of the construction work can be greatly reduced. In addition, work in high places can be reduced,
Danger to workers can be reduced. In addition, the amount and period of use of the temporary materials can be reduced, and the cost for the temporary materials can be significantly reduced. In addition, the number of parts to be managed on site can be greatly reduced, and the management of parts can be made extremely easy.

In this embodiment , the roof unit 22 is arranged and joined from the inner surface side of the dome roof 31 to the construction surface sectioned by the girder 32. On the contrary, FIG.
As shown in (2), the roof unit 22 may be arranged and joined from the outer surface side of the dome roof 31 to the construction surface sectioned by the girder 32. The dome roof and the dome roof construction method of the above embodiment can be applied to any dome, for example, an iron dome, an aluminum dome, a laminated wood (wood) dome, and the like. In the case of the dome, iron, aluminum, and laminated wood (wood) may be used as the materials of the large beams 12, 32 and the small beams 1, respectively.

[0023]

As described above, according to the dome roof and the method of constructing the dome roof of the present invention, the following effects can be obtained. According to the first invention, it is highly strong rib frame bodies roof units joined directly by itself, also higher are joined frame and girders and more directly forming the ribs By becoming a strong rib,
Compared with conventional dome roofs constructed only with small beams, the out-of-plane rigidity can be greatly improved without making the construction height unnecessarily high, enabling the construction of large-scale dome roofs It can be. According to the second invention , a dome roof is constructed by combining roof units that have been constructed in advance.
The construction work can be greatly reduced. Also,
Work at high places can be reduced, and danger to workers can be reduced. In addition, the amount and period of use of the temporary materials can be reduced, and the cost for the temporary materials can be significantly reduced. In addition, the number of parts to be managed on site can be greatly reduced, and the management of parts can be made extremely easy.

[Brief description of the drawings]

FIG. 1 is a side view of a dome roof explaining a structure of a dome roof according to a first reference example .

FIG. 2 is a plan view of the dome roof for explaining the structure of the dome roof of the first reference example .

FIG. 3 is a plan view of a part of the dome roof illustrating a structure of the dome roof according to the first reference example ;

FIG. 4 is a sectional view of the dome roof taken along the line AA in FIG. 3, illustrating the structure of the dome roof according to the first reference example ;

FIG. 5 is a plan view of a part of the dome roof illustrating a structure of the dome roof according to the second reference example .

FIG. 6 is a plan view of the roof unit for explaining the structure of the roof unit used in the second reference example and the embodiment of the present invention .

7 is a sectional view of the dome roof according to the second reference example, taken along the line BB in FIG. 5, illustrating the structure of the dome roof.

FIG. 8 is a side sectional view of a dome roof for explaining a method of constructing a dome roof according to a second reference example .

FIG. 9 is a plan view of a dome roof for explaining a method of constructing a dome roof according to a second reference example .

FIG. 10 is a side sectional view of a dome roof for explaining a method of constructing a dome roof according to a second reference example .

FIG. 11 is a plan view of a dome roof illustrating a method of constructing a dome roof according to a second reference example .

FIG. 12 is a perspective view of a roof unit illustrating a structure of a roof unit used in the second reference example and the embodiment of the present invention .

FIG. 13 is a plan view of a part of the dome roof for explaining the structure of the dome roof according to the embodiment .

14 is a sectional view taken along line C-C in a dome roof 13 describing the structure of the dome roof embodiment.

FIG. 15 is a side sectional view of the dome roof for explaining the method of constructing the dome roof according to the embodiment .

FIG. 16 is a plan view of a dome roof for explaining a method of constructing the dome roof according to the embodiment .

FIG. 17 is a side sectional view of a dome roof for explaining a method of constructing the dome roof according to the embodiment .

FIG. 18 is a plan view of a dome roof for explaining a method of constructing the dome roof according to the embodiment .

19 is a sectional view taken along line C-C in a dome roof 13 illustrating another structure of the dome roof embodiment.

FIG. 20 is a side view of the dome roof explaining a dome roof having a lattice structure constructed by combining only small beams.

FIG. 21 is a plan view of a dome roof for explaining a dome roof having a lattice structure constructed by combining only small beams.

[Explanation of symbols]

 1 Small beam 11, 21, 31 Dome roof 12, 32 Large beam 22 Roof unit

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takayuki Nishitani 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation (72) Inventor Naomori Taniguchi 1-2-3 Shibaura, Minato-ku, Tokyo Shimizu Kenji Suzuki (72) Inventor Kenji Suzuki 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation

Claims (2)

(57) [Claims] 1. A plurality of small beams are arranged in a lattice shape, and a plurality of small beams are joined in a frame formed by joining a plurality of small beams in a polygonal shape on the roof surface sectioned in a polygonal shape by the large beams. Roof units constructed by arranging beams in a lattice shape are provided, and frames of the roof units are directly joined to form ribs having higher strength than the small beams, and form the ribs A dome roof, wherein each frame body and the girders are directly joined. 2. A method for constructing a dome roof according to claim 1 , wherein a plurality of girders are arranged in a lattice shape, and a plurality of girders are previously formed in a roof surface sectioned in a polygonal shape by the girders. The roof units constructed by arranging a plurality of small beams in a lattice shape in a frame body formed by joining the small beams in a polygonal shape are arranged, and the frames of the roof unit are directly joined to each other. While forming ribs with higher strength than small beams,
A method for constructing a dome roof, wherein each frame forming the rib is directly joined to the girder.