JPH09189148A - Double-shell tower structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily position arcuate blocks and greatly reduce welding places. SOLUTION: A number of arcuate blocks 2a provided with both inside and outside shells having an arcuate shape in a plan view and web plates 5 arranged between the inside and outside shells to integrally connect them, are arranged circularily and stacked to form this structure. Flanges 8, 9 are fixed to both upper and lower ends of the inside shell 3 of respective arcuate blocks 2a and the flanges 8, 9 of vertically adjacent arcuate blocks 2a are fixed to each other with bolts and nuts 11. And the flanges 8, 9 of laterally adjacent arcuate blocks 2a are fixed to each other with connection plates 14, 15 and bolts and nuts 17. Further, mutual outside shells 4 of respective arcuate blocks 2a are welded with each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double shell tower structure used as, for example, a reinforced outer cylinder of an ultra-high chimney, an ultra-high building, and a deep underground structure.

[0002]

2. Description of the Related Art As shown in FIG. 5, for example, when a super high chimney 1 is constructed, a double shell tower structure 2 is constructed as a reinforcing outer cylinder on the outside thereof.

Conventionally, when constructing the double-shell tower-shaped structure 2, as shown in FIG. 6, both inner and outer shells 3 made of steel plates and arcuate in plan view are arranged in parallel at a predetermined interval. , 4 and a web plate (connecting member) 5 disposed between the shells 3 and 4 to integrally connect the shells 3 and 4
And a large number of arc-shaped blocks 2a each having an L-shaped stiffener 6 welded along the vertical direction on the facing surfaces of both shells 3 and 4, are arranged horizontally in an annular shape, and are stacked. The arc-shaped blocks 2a adjacent to each other are, as shown by A to D in FIG. 6, formed by abutting the inner shells 3 and 3 with each other, the outer shells 4 and 4 with each other, the web plates 5 and 5 with each other, and the stiffeners 6 and 6 with each other. They are integrally connected by welding.

[0004]

SUMMARY OF THE INVENTION In the above conventional configuration,
Since the contact areas of the vertically adjacent arcuate blocks 2a are small, it takes a lot of skill and time to stack and align the arcuate blocks 2a at a high place. In addition, since there are many welding points, the welding work also takes time, and the construction period becomes long and the manufacturing cost is high.

In view of the above problems, it is an object of the present invention to provide a double shell tower structure in which the arcuate blocks can be easily aligned and the number of welding points is significantly reduced. .

[0006]

In order to achieve the above object, the present invention is directed to both inner and outer shells, which are arcuate in plan view and are arranged in parallel at a predetermined distance from each other, and are arranged between the two shells. A double-shell tower-like structure formed by stacking and forming a large number of arc-shaped blocks having a connecting member that integrally connects both shells in an annular shape in the horizontal direction,
Horizontally extending flanges are fixed to the upper and lower edges of the inner shell of each arcuate block, and the flanges of the arcuate blocks that are vertically adjacent to each other are fastened by fasteners such as bolts and nuts, and are also left and right adjacent to each other. By fixing the flanges of the arc-shaped blocks to each other by connecting plates and fasteners such as bolts and nuts, the inner shells of the arc-shaped blocks that are adjacent to each other vertically and horizontally are integrally connected, and It is characterized in that the outer shell of the arcuate block is welded at its end edges and side edges.

In the above construction, when constructing a double-shell tower structure, a large number of arc-shaped blocks are arranged horizontally in an annular shape and piled up. In this case, each arc-shaped block is Horizontally extending flanges are fixed to both upper and lower edges of the inner shell, and the contact areas of vertically adjacent arcuate blocks through the flanges are large, so stacking arcuate blocks at high places and Positioning work can be easily performed.

Further, the flanges of the arc-shaped blocks adjacent to each other in the vertical direction are fixed by fastening members such as bolts and nuts, and the flanges of the arc-shaped blocks adjacent to the left and right are fixed by connecting plates and bolts and nuts. The inner shells of the arc-shaped blocks that are adjacent to each other in the vertical and horizontal directions are integrally connected by fastening them with a fastener, and the welding of the inner shell is not required, and the number of welded points is significantly reduced compared to the past. Therefore, the construction period can be shortened and the production cost can be reduced.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show a main part of a double shell tower structure 2 which is an embodiment of the present invention, and the same parts as those of the conventional example shown in FIGS. 5 and 6 are designated by the same reference numerals. The description is omitted.

Horizontally extending flanges 8 and 9 are welded to the upper and lower edges of the inner shell 3 of each arcuate block 2a constituting the double shell tower-like structure 2, and the flanges 8 and 9 are longitudinally aligned with each other. Through-holes 10 are provided at regular intervals along the vertical direction, and the vertically adjacent arcuate blocks 2a have their flanges 8 and 9 passed through the through-holes 10 and bolts.
The nuts (fasteners) 11 are fastened together to be integrally connected.

At the top and bottom edges of the web plate 5, the stand plates 12, which are flush with the top and bottom edges of the inner and outer shells 3 and 4,
13 are welded, and when stacking vertically adjacent arc-shaped blocks 2a, the stand plates 12,
By bringing 13 into contact with each other, the stacking work can be easily performed.

A pair of upper and lower connecting plates 14 and 15 are bridged between the flanges 8 and 9 of the arc-shaped blocks 2a which are adjacent to each other on the left and right, and through holes 16 are formed through both the connecting plates 14 and 15, and Of the arc-shaped block 2a adjacent to the through-hole 10,1 through the flanges 8,9 and the connecting plates 14,15.
The bolts and nuts (fasteners) 17 are fastened through 6 and are integrally connected.

The arc-shaped blocks 2a vertically adjacent to each other
A predetermined gap α is formed between the stiffeners 6 and 6, and the welding work can be easily performed between the edges of the outer shell 4 that are vertically butted through the gap α.

In the above structure, when constructing the double shell tower-like structure 2, a large number of arc-shaped blocks 2a are arranged in a ring shape in the horizontal direction, and the flanges 8 of the arc-shaped blocks 2a adjacent to each other on the left and right sides are arranged. The nine members are integrally connected to each other through the connecting plates 14 and 15 and the bolts and nuts 17, thereby forming a first-stage annular body including a large number of arc-shaped blocks 2a.

Next, a second-stage annular body is formed on the first-stage annular body by the same procedure, and the flanges 8 and 9 of the arcuate block 2a facing each other vertically are fixed by bolts and nuts 11. The first-stage annular body and the second-stage annular body are integrally connected.

Further, the upper and lower end edges and the side edges of the outer shell 4 which are butted against each other are welded 19 to thereby integrally join the outer shells 4 of the arc-shaped blocks 2a.

Thereafter, by stacking the third and subsequent annular bodies in the same procedure, the double shell tower structure 2 having a predetermined height can be constructed. In this case, since the contact areas of the arc-shaped blocks 2a vertically adjacent to each other via the flanges 8 and 9 and the stand plates 12 and 13 are large,
It is possible to easily stack and align the arc-shaped blocks 2a at a high place.

Further, since the welding of the inner shell 3 is not necessary and the number of welded portions is remarkably reduced as compared with the conventional case, the construction period can be shortened and the manufacturing cost can be reduced. Further, by widening the width L of the flanges 8 and 9 (for example, about 70 cm), the flanges 8 and 9 can also be used as scaffolding for construction work.

[0019]

According to the present invention, when a large number of arc-shaped blocks are arranged in an annular shape in the horizontal direction, and when stacked, flanges extending in the horizontal direction are fixed to the upper and lower end edges of the inner shell of each of the arc-shaped blocks. Since the contact areas of the arcuate blocks vertically adjacent to each other via the flange are large, the work of stacking and aligning the arcuate blocks at a high place can be easily performed.

Further, the flanges of the arc-shaped blocks adjacent to each other in the vertical direction are fixed by the fasteners such as bolts and nuts, and the flanges of the arc-shaped blocks adjacent to the left and right are fixed by the connecting plate and the bolts and nuts. The inner shells of the arc-shaped blocks that are adjacent to each other in the vertical and horizontal directions are integrally connected by fastening them with a fastener, and the welding of the inner shell is not required, and the number of welded points is significantly reduced compared to the past. Therefore, the construction period can be shortened and the production cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which arc-shaped blocks constituting a double shell tower-like structure according to an embodiment of the present invention are stacked.

FIG. 2 is a back view of the same.

FIG. 3 is a vertical sectional view of the same.

FIG. 4 is a cross-sectional view of the same.

FIG. 5 is a perspective view of an ultra-high chimney reinforced by a double shell tower structure.

FIG. 6 is a perspective view showing a conventional example.

[Explanation of symbols]

 2 Double-shell tower-shaped structure 2a Arc-shaped block 3 Inner shell 4 Outer shell 5 Web plate (connecting member) 8 Flange 9 Flange 11 Bolt / nut (fastener) 14 Connecting plate 15 Connecting plate 17 Bolt / nut (stop) Kimono) 19 Welding

Front page continuation (72) Inventor Susumu Matsuno 5-3, Nishi Kujo 5-3, Konohana-ku, Osaka City, Osaka Prefecture Hitachi Shipbuilding Co., Ltd. (72) Mitsuru Mizuuchi 5-3, Nishikujo, Konohana-ku, Osaka No. 28 Hitachi Shipbuilding Co., Ltd. (72) Inventor Toshio Ueda 5-3-3, Nishikujo 5-chome, Konohana-ku, Osaka City, Osaka Prefecture Hitachi Shipbuilding Co., Ltd.

Claims (1)

[Claims] 1. A large number of arcuate shapes having inner and outer shells, which are arcuate in plan view and are arranged in parallel at a predetermined distance from each other, and a connecting member which is arranged between the shells and integrally connects the shells. A double-shell tower-like structure formed by stacking the blocks arranged horizontally in an annular shape,
Horizontally extending flanges are fixed to the upper and lower edges of the inner shell of each arcuate block, and the flanges of the arcuate blocks that are vertically adjacent to each other are fastened by fasteners such as bolts and nuts, and are also left and right adjacent to each other. By fixing the flanges of the arc-shaped blocks to each other by connecting plates and fasteners such as bolts and nuts, the inner shells of the arc-shaped blocks that are adjacent to each other vertically and horizontally are integrally connected, and A double-shell tower-like structure characterized in that the outer shell of the arc-shaped block is welded at its end edges and side edges.