JPH10110500A - Dome roof construction and execution method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide dome roof construction and an execution method thereof capable of executing at a low cost within a short period of construction and being applied to the existing equipment without any hindrance. SOLUTION: In an execution method of dome roof construction, a temporary working platform is temporarily constructed to install the center ring 10, at the same time, bearing legs 7, 7,... are installed to the circumference section to build the circumferential ring 11, and then, it is constituted so as to build an intermediate frame. When the intermediate frame is built, first of all, process of works for making field assembling of fan-shaped unit frames 15, process of works for drawing the unit frames 15 downward of a dome roof 5, process of works for lifting the unit frames 15 to build it between the center ring 10 and circumferential ring 11 and process of works for fixing the unit frames 15 to move in the circumferential direction along the center ring 10 and the circumferential ring 11 are repeated, and the unit frames 15 adjacent to each other are connected to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to various types of stadiums, concert halls, convention centers, etc.
The present invention relates to a dome roof structure suitable for use as a roof of a dome-shaped facility and a method of constructing the same.

[0002]

2. Description of the Related Art Hitherto, there has been a construction in which the roof of various facilities such as a stadium, a concert hall, a convention center, and an atrium is constituted by a dome roof in which a part of a spherical surface is cut off. Generally, the dome roof is
Roofs made of various materials are stretched on the upper surface of a roof frame assembled with steel frames. In order to construct such a dome roof, after constructing the foundation of the facility and the lower structure of the facility consisting of the audience stand and the outer peripheral wall,
The dome roof was being assembled on the scaffold built inside this substructure.

However, in such a construction method,
It has been a problem that the scaffold becomes large-scale, and that assembling and disassembling it requires a great deal of cost and labor. In order to solve such a problem, for example,
A technique described in Japanese Patent No. 27733 is proposed.
In this technique, a central ring (truss rotating ring) is erected at the center of a dome roof, and an outer peripheral ring (tension ring) is erected at an outer peripheral portion. Then, two temporary scaffolds (radial directions around the central ring) are provided. Work stage). And after that, the roof frame (steel dome)
A roof frame is assembled by repeating a process of assembling a fan-shaped block having a radially divided shape on each temporary scaffold and a process of rotating the block in the circumferential direction.

[0004]

However, the conventional dome roof structure and the method for constructing the same as described above have the following problems. First, not only a vertical load but also an axial force acting outward acts on the outer periphery of the dome roof. The pillars provided on the outer periphery of the lower structure of the facility and supporting the dome roof support such an outer ring, so the strength is set considering not only the vertical load but also the axial force in the horizontal direction. As a result, the cross section of the pillar becomes large, resulting in an increase in cost. In addition, the dome roof is usually provided integrally with the lower structure of the facility. In order to achieve sufficient ventilation and ventilation, it is necessary to provide special ventilation equipment, etc. Are also contributing to the rise in costs.

Further, in the above construction method, the scaffold is assembled and
In order to reduce the labor for dismantling, roof frames are assembled by rotating fan-shaped blocks. However, even in this method, scaffolds must be assembled at two places in the facility, and the above problem still remains. It was hard to say that it was completely resolved.

In particular, in recent years, dome roofs have been newly installed on existing baseball fields, soccer fields, athletics fields, bicycle race fields, general grounds, and the like, and these facilities have been all weathered. However, in such a case, it is required not only that the cost is low, but also that the construction be performed in a short period of time during the off-season of various games and competitions without hindering the use of the existing facilities. In such a case, the surrounding work space is often limited, and the construction conditions are very severe.

The present invention has been made in view of the above points, and is a dome roof which can be constructed at low cost and in a short construction period, and which can be applied to existing facilities without any problem. It is an object to provide a structure and a construction method thereof.

[0008]

The invention according to claim 1 is
A frame of the dome roof, a ring-shaped central ring disposed at the center of the dome roof, and a ring-shaped outer peripheral ring disposed substantially concentrically with the center ring at the outer periphery of the dome roof, An intermediate frame erected between the central ring and the outer peripheral ring, and a supporting leg constructed on the ground to support the outer peripheral ring, wherein the supporting leg extends in a vertical direction; And a diagonal support extending obliquely from the outer peripheral ring side toward the ground side on the outer peripheral side, and the width of the diagonal support is gradually reduced from top to bottom. It is characterized by having.

According to a second aspect of the present invention, in the dome roof structure according to the first aspect, the intermediate frame is formed by a plurality of substantially fan-shaped unit frames divided in a circumferential direction around the center ring. It is characterized by having.

[0010] The invention according to claim 3 is the invention according to claim 1 or 2.
In the dome roof structure according to the above, an outer peripheral roofing material is stretched on the intermediate frame between the center ring and the outer peripheral ring, and a predetermined dimension of the outer peripheral roofing material is spaced above the central ring. In this case, an inner peripheral roof material covering the upper part of the center ring is provided.

The invention according to claim 4 is the invention according to claims 1 to 3
In the dome roof structure according to any one of the above, between the outer peripheral ring and the support leg, the relative movement due to horizontal vibration of the outer peripheral ring and the support leg is attenuated, and the relative movement in the vertical direction is suppressed. It is characterized by having a seismic isolation device.

The invention according to claim 5 is the invention according to claims 1 to 4
In the dome roof structure according to any one of the above, the frame is provided integrally with a truss member extending in a chord direction of the dome roof and located in a vertical plane, and both ends of the truss member are supported by the truss member. It is characterized by being connected to the legs.

The invention according to claim 6 is the invention according to claims 1 to 5
In the dome roof structure according to any one of the above, the intermediate frame is formed in a substantially arc shape in a vertical sectional view, and a cable is stretched between an end on a central portion side and an end portion on an outer peripheral portion side of the intermediate frame. And the length of the cable is adjustable.

According to a seventh aspect of the present invention, a ring-shaped center ring is provided at the center of the dome roof to be erected, and a support leg is provided on the outer periphery, and an outer ring is erected on the support leg. Thereafter, an intermediate frame is provided between the center ring and the outer ring, and when the intermediate frame is provided, first, a substantially fan-shaped unit frame obtained by dividing the intermediate frame into a plurality of pieces in the circumferential direction. Grounding the unit frame, drawing the unit frame below the dome roof to be erected, lifting the unit frame, and bridging the unit frame between the central ring and the outer peripheral ring. Repeating the step of moving the unit frame in the circumferential direction along the central ring and the outer peripheral ring and fixing the unit frame at a predetermined position, It is characterized by joining the knitting frames each other.

According to an eighth aspect of the present invention, in the dome roof construction method according to the seventh aspect, the truss member extending in the chord direction of the dome roof to be erected is installed integrally with the intermediate frame. A truss divided body obtained by dividing the truss member into a plurality of pieces along the length direction is integrated into the unit frame in advance, and the unit frame is fixed at a predetermined position, and this When being joined to the unit frame, the truss member is also joined to another truss member incorporated in the other unit frame.

[0016] The invention according to claim 9 is the invention according to claim 7 or 8.
The dome roof construction method described above is characterized in that the dome roof is erected above an existing facility.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of a dome roof structure and a construction method according to the present invention.
This will be described with reference to FIG.

FIGS. 1 and 2 show a state in which a dome roof is erected on an existing baseball stadium, for example, by applying the dome roof structure and the construction method according to the present invention. In the figure, reference numeral 1 denotes an existing stadium (existing facility), 2 denotes a ground portion of the stadium 1, 3 denotes a spectator stand formed so as to surround the ground portion 2, 4 denotes a back net side of the spectator stand 3 (home base). The building 5 provided on the side 1) shows a dome roof constructed on such a stadium 1. As shown in FIG. 1, the ground G around the stadium 1
Is an inclined surface that gradually decreases from the home base side (left side in the figure) to the back screen side (right side in the figure).

The dome roof 5 to be erected on the existing stadium 1 has a substantially circular shape in plan view, has a shape in which a part of a spherical surface is cut out as a whole, and forms a structural surface thereof. A frame 6, supporting legs 7, 7,... Disposed on the outer peripheral portion of the frame 6 and supporting the frame 6 separately from the stadium 1, and a roofing material 8 provided on the upper surface side of the frame 6. It is schematically composed of

As shown in FIGS. 1 and 2, the frame 6
Is a ring-shaped center ring 10 provided at the center (top) of the dome roof 5, and an outer ring 11 provided on the outer periphery of the dome roof 5 in a substantially concentric manner with the center ring 10.
And an intermediate frame 12 provided between the central ring 10 and the outer peripheral ring 11, and a horizontal truss (truss member) 13 provided above the building 4. The center ring 10 is provided so as to be located in a horizontal plane, and is formed, for example, by a three-dimensional truss structure having a triangular or quadrangular cross section. Outer ring 11
It is provided so as to be located in the horizontal plane at a position above the highest part such as the audience stand 3 or the building 4 of the existing stadium 1. For example, a plurality of steel members of a predetermined length are connected to form a polygon in plan view. By doing so, it forms a substantially circular shape as a whole.

As shown in FIG. 2, the intermediate frame 12
Are divided radially along the circumferential direction, for example, into 32 unit frames.

As shown in FIG. 3, each unit frame 1
5 has a substantially fan-like shape in plan view, and has string beams 16 located on both sides thereof in a substantially vertical plane. As shown in FIG. 3A, each string beam 16 includes an upper chord member 17 extending in a substantially arc shape and a lower chord member 1 extending parallel to the upper chord member 17.
8, a bundle member 19 and a lattice member 20 laid between the upper chord member 17 and the lower chord member 18, and a cable 21 stretched between both ends of the curved lower chord member 18. The length of this cable 21 is adjustable,
Thereby, the stress and the dimension of the string string 16 can be adjusted. As shown in FIG. 3 (b), each unit frame 15 is provided with
In between, the string beams 1 on both sides extending in the circumferential direction of the dome roof 5
A connecting material 22 for connecting the string beams 16, 1
6 and a lattice member 23 provided between the connecting members 22. Here, as shown in FIG. 3C, the lattice material 23 is attached to each unit frame 15.
, The upper chord members 17, 17 on both sides of the string beams 16, 16
And are arranged in a substantially W-shape. This is because the roof material 8 described later is stretched as a suspension structure.

As shown in FIG. 2, in the intermediate frame 12 composed of the unit frame 15, in the portion where the unit frames 15, 15 are adjacent to each other, the two string beams 16, 16 are connected by a joint material (not shown). It is integrated by the thing.

The horizontal truss 13 provided above the building 4 as described above is provided so as to extend in the chord direction of the dome roof 5 in plan view. As shown in FIG. 4, the horizontal truss 13 includes an upper chord material 26 and a lower chord material 27 extending in the horizontal direction, and the upper chord material 26 and the lower chord material 2.
It is composed of a bundle 28 and a lattice 29 laid between the bridges 7. The horizontal truss 13 is integrally incorporated in three unit frames 15, 15, 15. That is, the horizontal truss 13 is divided into, for example, three truss divided bodies 13a, 13b, and 13c in its length direction, and is incorporated in these three unit frames 15. As shown in FIG. 2, such a horizontal truss 13 is connected at both ends to the support legs 7, whereby the horizontal truss 13 and the support legs 7 are provided so as to straddle the building 4. Configuration.

As shown in FIG. 5, the support leg 7 includes a pair of vertical columns 31 extending vertically downward from the outer peripheral ring 11.
And a pair of diagonal columns 32, 32 extending obliquely downward from the upper ends of the vertical columns 31, 31. The oblique struts 32, 32 extend from the outer peripheral ring 11 toward the outer peripheral side thereof.
The distance between the reference numerals 2 and 32 gradually decreases from the top to the bottom, and the lower end is fixed to a concrete retaining base 33 in the ground. Also, staying foundations 34, 34 are provided at the lower ends of the vertical struts 31, 31, and underground beams (connection beams) connecting these staying foundations 33, 34, 34 are provided.
35, 35, 35 are provided in the ground. further,
Such a supporting leg 7 has a vertical support 3 as a reinforcing material.
Brace members 36, 36 are provided between 1, 31 and connecting beams 37, 37,... Located in a horizontal plane are provided between the vertical columns 31, 31 and the oblique columns 32, 32.

As shown in FIG. 2, such support legs 7
Has different heights depending on the location because the stadium 1 is constructed on a slope, but as shown in FIG.
Each support leg 7 is set so that the height H and the stay stance L (the interval between the line connecting the stay foundations 34, 34 and the stay foundation 33) are substantially equal.

As shown in FIG. 6, a seismic isolation device 40 is provided between the upper end of each support leg 7 and the outer peripheral ring 11. The seismic isolation device 40 includes a laminated rubber 41 and the laminated rubber 4.
1 on both sides.

The laminated rubber 41 includes a steel plate 45 and a layered viscoelastic body 46 between an upper plate 43 fixed to the outer peripheral ring 11 and a lower plate 44 fixed to the upper surface of the support leg 7. Are alternately stacked in the vertical direction.

Each of the vertical movement suppressing devices 42 is
A steel upper rail 50 extending in the horizontal direction is provided between an upper plate 47 fixed to the lower surface of the support leg 7 and a lower plate 48 fixed to the upper surface of the support leg 7. A steel lower rail 51 extending horizontally,
A joint member 52 for slidably connecting the upper rail 50 and the lower rail 51 in the respective extending directions is provided. Claw portions 52a, 52b protruding laterally at the upper and lower ends of the joint member 52.
Are formed, and these are engaged with the rail grooves 50a, 51a of the upper rail 50 and the lower rail 51. Thereby, the upper rail 50 and the lower rail 51 are restrained from being displaced in the vertical direction.

The upper rail 50 is attached to the upper plate 47 via a height adjusting mechanism 53. The height adjustment mechanism 53 includes an adjustment bolt 53A having a base end fixed to the upper plate 47 and a predetermined length, and a fixing nut 5A.
3B, and the upper rail 50 is fixed at any position within the length of the adjustment bolt 53A.
By fixing with B, the height of the upper rail 50 can be adjusted.

In the seismic isolation device 40 having such a configuration, when a horizontal external force is input to the dome roof 5 due to an earthquake or the like, the seismic isolation device 40 and the support legs 7 vibrate integrally with the ground. A relative displacement in the horizontal direction occurs between the outer ring 11 and the outer ring 11 supported. Then, in the laminated rubber 41, relative displacement occurs in the horizontal direction between the upper plate 43 side and the lower plate 44 side, and this relative displacement is attenuated by the deformation of each viscoelastic body 46. I have. At this time, also in each of the vertical movement suppressing devices 42 on both sides of the laminated rubber 41, a relative displacement in the horizontal direction occurs between the upper plate 47 side and the lower plate 48 side. The rail 51 relatively moves in the horizontal plane via the joint member 52 so that the damping effect of the laminated rubber 41 is not hindered.

When a vertical external force is applied to the dome roof 5, the vertical relative displacement between the upper rail 50 and the lower rail 51 is restrained by the joint member 52 of the vertical movement suppressing device 42. It has become.
This restrains the vertical displacement of the support leg 7 of the dome roof 5 and the frame 6 in the vertical direction, so that no force acts on the laminated rubber 41 in the vertical direction.

By the way, as shown in FIG. 1, the roofing material 8 stretched on the frame 6 is made up of the outer peripheral roofing material 5 stretched between the center ring 10 and the outer peripheral ring 11 of the frame 6.
5 and an inner peripheral roof material 56 erected so as to cover the inner space of the center ring 10. 1 and 7
As shown in the figure, the inner peripheral roofing material 56 is installed above the inner peripheral edge of the outer peripheral roofing material 55 by a predetermined dimension via a support member (not shown). A space 57 for ventilation is formed therebetween.

As shown in FIG. 1, the frame 6 of the dome roof 5 is thus supported by the support legs 7 and the horizontal truss 13
Thus, it is installed without putting any load on the audience stand 3 or the building 4 of the existing stadium 1. The dome roof 5 has a configuration in which a large opening 60 that opens laterally below the frame 6 is formed on the outfield side of the audience stand 3.

Next, the dome roof 5 having the above structure is
A method of erection of the existing stadium 1 will be described.
First, as shown in FIG. 8, the space outside the stadium 1 is a material yard 61 and a loading yard 62,
A part of the audience stand 3 adjacent to the carry-in yard 62 is removed, and this is set as a carry-in entrance 63.

Then, as shown in FIG. 9, a temporary gantry 65 is assembled on the ground portion 2, and the center ring 10 is supported on the temporary gantry 65. Also, as shown in FIG.
At the same time, supporting legs 7, 7,... Are installed at predetermined positions around the stadium 1, and the seismic isolation device 40 is mounted on these supporting legs 7.
(See FIG. 6), the outer ring 11 is installed. In order to facilitate the movement of the unit frame 15 described later, a friction reducing material such as Teflon (registered trademark), a truck for movement, and a traveling rail thereof are appropriately installed on the center ring 10 and the outer ring 11. I do.

On the other hand, a frame member 66 assembled in a factory or the like and carried into the material yard 61 is transferred to the carry-in yard 62, and the unit frame 15 is assembled from the frame member 66. At this time, an outer peripheral roofing material 55 (see FIG. 1) is also stretched over each unit frame 15. The unit frame 15 is assembled in ascending order from those installed on the building 4 side opposite to the carry-in entrance 63.

Next, the assembled unit frame 15
Is pulled into the ground portion 2 from the carry-in entrance 63 by a crane 67 or the like. Then, as shown in FIG. 9, the unit frame 15 is lifted and lifted, and then the center ring 1 is lifted.
0 and the outer ring 11. Subsequently, as shown in FIG. 8, the unit frame 15 is
Then, the outer ring 11 is moved along a circumferential direction to a predetermined position where the outer ring 11 is to be assembled using a hydraulic jack or the like. Then, the unit frame 15 moved to a predetermined position is fixed to the center ring 10 and the outer ring 11 by a joint material (not shown) or the like.

Thereafter, in the same manner as described above, a step of laying the unit frame 15 in the loading yard 62, a step of pulling the laid unit frame 15 into the ground portion 2, and a step of lifting the unit frame 15 The central ring 1
0 and the step of bridging over the outer ring 11, the step of moving the unit frame 15 in the circumferential direction along the center ring 10 and the outer ring 11 and fixing the unit frame 15 at a predetermined position are repeated, and the unit frames 15 are sequentially installed. I will do it. At this time, in order to fix each unit frame 15 at a predetermined position, a connection member (not shown) is connected to another unit frame 15 already fixed at an adjacent position.

As shown in FIG. 4B, the horizontal truss 13 is divided into three divided trusses 13a, 13b, 1
When the unit frame 15 incorporating the 3c is installed, the above-described steps are performed, and when the unit frame 15 is joined to another unit frame 15 installed earlier, the truss divided bodies 13a, 13b, 13c are also joined at the same time. To

Then, as shown in FIG. 1, after all the unit frames 15 are erected, the inner peripheral roofing material 56 is stretched on the center ring 10, and the temporary gantry 6 shown in FIG.
5 is dismantled and removed, and the audience stand 3 is restored to the portion of the carry-in entrance 63, whereby the construction of the dome roof 5 on the stadium 1 is completed.

In the structure of the dome roof 5 described above, the frame 6 of the dome roof 5 includes the center ring 10 and the outer ring 1.
1, an intermediate frame 12 and support legs 7. As described above, the frame 6 of the dome roof 5 is supported on the support legs 7, and has a structure separate from the existing stadium 1. Thereby, it is not necessary to reinforce the dome roof 5 when erection of the dome roof 5 in the stadium 1,
In terms of materials, construction, etc., costs can be significantly reduced. Since the support leg 7 has a configuration in which the vertical support 31, the oblique support 32, and the underground beam 35 are combined in a substantially triangular shape, the support leg 7 is stable.
The dome roof 5 to be supported by the above can be a stable frame. In addition, the vertical load of the dome roof 5 is
And the axial force is borne by the oblique support columns 32, so that the cross section of the member can be reduced as compared with the conventional structure in which the support is simply supported by vertical columns, and also in this regard, the cost is reduced. Can be achieved. In addition, since the support legs 7 have a stable structure, the construction of the outer peripheral ring 11 can be started even before the assembly of all the support legs 7 is completed at the time of construction. It can lead to shortening.

The roof material 8 of the dome roof 5 has a two-stage structure including an outer roof material 55 and an inner roof material 56.
A space 5 is provided between the outer roof material 55 and the inner roof material 56.
7 is formed. Thereby, the ventilation in the dome roof 5 can be performed well, and the environment can be improved. Further, since the temperature difference between the inside and outside of the dome roof 5 can be reduced, dew condensation on the roof material 8 can be prevented.
It is also possible to make the inside an environment full of seasonal feeling, and to efficiently discharge smoke in the event of a fire. further,
Because the dome roof 5 is separate from the stadium 1, the wind that has entered through the large opening 60 and other gaps causes
Although buoyancy acts on the dome roof 5, buoyancy can be reduced by escaping the wind from the space 57.

Further, a seismic isolation device 40 is provided between the outer peripheral ring 11 and the support leg 7 to attenuate the relative movement in the horizontal direction and to suppress the relative movement in the vertical direction. Thereby, when an earthquake or the like occurs, the vibration in the horizontal direction can be attenuated, and the dome roof 5 can have a seismic isolation structure. Further, for example, it is possible to cope with expansion and contraction of the frame 6 due to a temperature difference between summer and winter. In addition, by suppressing the relative movement in the vertical direction by the vertical movement suppressing device 42 of the seismic isolation device 40, it is possible to withstand vertical vibration, buoyancy acting on the dome roof 5, and the like. In addition, it is possible to prevent the viscoelastic body 46 of the laminated rubber 41 constituting the seismic isolation device 40 from breaking due to the vibration, buoyancy, or the like.

In addition, above the building 4 of the stadium 1, a horizontal truss 1 extending in the chord direction of the dome roof 5 is provided.
3 are provided, and both ends thereof are supported by support legs 7. Thereby, the dome roof 5 can be erected so as to straddle the building 4 where the support legs 7 cannot be provided.

Since each unit frame 15 is provided with the string beams 16, the length of the cable 21 can be adjusted to absorb errors during construction.

Further, each support leg 7 is set such that its height H and the restraint stance L are substantially equal. By the way, in order to lay the dome roof 5 horizontally on the stadium 1 built on the slope, the heights H of the support legs 7 are different from each other. The axial forces acting on the support legs 7 can be equalized, and the entire dome roof 5 can be stabilized.

In addition, a large opening 60 is formed between the dome roof 5 and the stadium 1.
Thereby, an open space can be provided in the stadium 1, and ventilation can be performed well.

According to the above-described method of constructing the dome roof 5, the temporary ring 65 is temporarily installed and the center ring 10 is installed, and the supporting legs 7, 7,... When the intermediate frame 12 is erected, first, a step of laying the fan-shaped unit frame 15 and a step of pulling the unit frame 15 below the dome roof 5 are performed. Lifting the unit frame 15 and bridging the unit frame 15 between the center ring 10 and the outer ring 11, and moving and fixing the unit frame 15 in the circumferential direction along the center ring 10 and the outer ring 11. Steps are repeated until the unit frames 1 adjacent to each other
5 are joined. Accordingly, when the dome roof 5 is erected on the existing stadium 1, it is only necessary to provide the temporary gantry 65 in the stadium 1, and it is of course to partially assemble the scaffold as in the related art. Scaffolding can also be minimized. Therefore, it is possible to minimize the labor and height work for assembling and disassembling the scaffold. In addition, since the unit frame 15 is laid in the loading yard 62 outside the stadium 1, and the unit frame 15 is drawn into the stadium 1 and installed, the assembly work area and the installation area of the unit frame 15 are separated. Work can be performed efficiently in parallel. In addition, since the same work cycle is repeated, the larger the dome roof 5 to be erected, the greater the merit of higher work efficiency. In this way, the dome roof 5 to the baseball stadium 1 for which the construction period is limited.
Can significantly reduce the cost and shorten the construction period of the construction work.

The horizontal truss 13 and the outer roofing material 55 are also integrated into the unit frame 15, so that work efficiency can be improved in this respect as well.

In the above embodiment, the dome roof 5 is constructed on the existing baseball stadium 1. However, the type of the facility on which the dome roof 5 is constructed, and whether the facility is new or existing, is not limited. It can also be applied to concert halls, convention centers, atriums and the like. Although the dome roof 5 has a substantially circular planar shape, the same structure and construction method can be applied to an elliptical shape or the like.

Although the dome roof 5 and the stadium 1 are separately formed to form a gap, the dome roof 5 may be constructed without any gap. Even in this case, the same effect as described above can be obtained by providing the roofing material 8 with a two-stage structure including the outer peripheral roofing material 55 and the inner peripheral roofing material 56 or by providing the seismic isolation device 40. is there.

Further, the structure of the dome roof 5 and the construction method thereof other than the above do not matter in detail as long as they do not depart from the gist of the dome roof structure and the construction method according to the present invention. It is good also as composition which abolished the string string 16 etc.

[0054]

As described above, according to the dome roof structure of the first aspect, the frame of the dome roof is provided between the center ring, the outer ring, and the center ring and the outer ring. It consists of an intermediate frame and supporting legs for supporting the outer peripheral ring, and the supporting legs have a vertical column, an oblique column, and a connecting beam. In such a configuration, the dome roof is supported on the support legs, and can be configured separately from the lower structure of various facilities on which the dome roof is erected. Accordingly, it is not necessary to reinforce the lower structure of the facility to support the dome roof, and the cost can be significantly reduced in terms of material, construction, and the like. In addition, the above structure can be applied to a case where a dome roof is erected on various existing facilities,
Construction can be performed at low cost and in a short construction period without hindering the operation of the facility. And the supporting leg is stable because it has a configuration in which the vertical support, the diagonal support, and the connecting beam are combined in a substantially triangular shape, and the dome roof supported by such a support support is a stable frame. be able to. In addition, the vertical load of the dome roof is borne by the vertical support of the support leg, and the axial force of the dome roof is supported by the diagonal support of the support leg. Can be smaller. In addition, at the time of construction, since the support legs are stable as described above, even before the assembly of all the support legs is completed, it is possible to start partially constructing the dome roof, It can lead to shortening.

According to the dome roof structure of the second aspect,
The intermediate frame is configured by a plurality of substantially fan-shaped unit frames. Accordingly, during construction, the intermediate frame can be efficiently assembled, and the construction period can be shortened and the cost can be reduced.

According to the dome roof structure of the third aspect,
An outer peripheral roofing material is stretched on the intermediate frame, and an inner peripheral roofing material is installed above the central ring to cover a part above the central ring at a certain distance above the outer peripheral roofing material. . In this manner, by providing the roof with a two-stage structure and providing a gap between the outer peripheral roof material and the inner peripheral roof material, ventilation in the dome can be favorably achieved. This allows
The environment in the facility can be made favorable. Furthermore, since the temperature difference between the inside and outside of the dome roof can be reduced, dew condensation on the dome roof surface can be prevented, the facility has a seasonal environment, and smoke can be efficiently discharged in the event of a fire. It is also possible to do so. In addition, as described above, when the dome roof is separated from the lower structure of the facility, buoyancy acts on the dome roof due to the wind that has entered between the lower structure and the dome roof. The buoyancy can be reduced by allowing the wind to escape from the gap between the inner roof material.

According to the dome roof structure of the fourth aspect,
A seismic isolation device is provided between the outer peripheral ring and the support leg to attenuate the relative movement of the outer peripheral ring and the support leg in the horizontal direction and to suppress the relative movement in the vertical direction. Thus, when an earthquake or the like occurs, the vibration in the horizontal direction is attenuated, so that the dome roof can have a seismic isolation structure. Further, for example, it is possible to cope with expansion and contraction of the frame due to a temperature difference between summer and winter. Further, by suppressing the relative movement in the vertical direction, it is possible to withstand vertical vibrations and buoyancy acting on the dome roof. This can prevent the laminated rubber from breaking.

According to the dome roof structure of the fifth aspect,
The frame is provided integrally with a truss member extending in the chord direction of the dome roof and located in a vertical plane, and both ends of the truss member are connected to support legs. In this way, even if the lower structure of the facility where the dome roof is erected has, for example, a portion that protrudes to the outer peripheral side, the both ends are provided here so as to straddle the truss member supported by the support legs. Accordingly, the load on the dome roof can be supported, so that the dome roof can be erected without applying a load to a portion or the like projecting to the outer peripheral side.

According to the dome roof structure of claim 6,
The intermediate frame is formed in an arc shape in a vertical sectional view, and has a configuration in which a cable is stretched between its central portion and an outer peripheral portion so that its length can be adjusted. Thus, by adjusting the length of the cable, the radial dimension of the intermediate frame can be adjusted, and a construction error can be absorbed, thereby improving the construction accuracy.

According to the dome roof construction method of the present invention, the center ring is installed at the center of the dome roof to be erected, and the support legs are installed at the outer periphery, and the outer ring is mounted on the support legs. When the intermediate frame is installed, first, the step of laying the fan-shaped unit frame, the step of pulling the unit frame below the dome roof, and the step of elevating the unit frame are performed. Weighing and rolling the unit frame between the center ring and the outer peripheral ring, and the step of moving the unit frame in the circumferential direction along the center ring and the outer peripheral ring to fix the unit frame, and repeating the steps The frame is joined together. As a result, only temporary scaffolds for supporting the central ring need to be provided in the facility where the dome roof is to be erected, and the work of assembling and dismantling the scaffolds and work at heights can be minimized. It becomes possible. In addition, since the unit frame is laid outside the facility where the dome roof is to be erected, and the unit frame is pulled into the facility and installed, the assembly work area and the installation area are separated, and work can be performed in parallel. Can do well. Further, since the same work cycle is repeated, the larger the dome roof to be erected, the greater the merit of work efficiency improvement. In this way, it is possible to significantly reduce the cost and shorten the construction period of the entire dome roof construction work.

According to the dome roof construction method of the present invention, since the truss member extending in the chord direction of the dome roof is installed integrally with the intermediate frame, the truss member is provided in plural along the length direction thereof. When the divided truss divided body is integrated into the unit frame in advance, the unit frame is fixed at a predetermined position, and when this is joined to another adjacent unit frame, the truss member is also replaced with another unit. It is configured to be joined to another truss member incorporated in the frame. In this way, by incorporating the truss divided body integrally into the unit frame, when the dome roof structure according to claim 5 is realized, the truss member can be constructed more efficiently.

According to the dome roof construction method of the ninth aspect, the dome roof is constructed above the existing facility. As a result, the facilities such as the existing outdoor stadium can be made all-weather, and the construction can be performed at lower cost and shorter construction period than before, as described above.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view showing an example of a facility to which a dome roof structure and a construction method according to the present invention are applied.

FIG. 2 is a plan view of FIG.

FIG. 3 is a view showing a unit frame constituting the dome roof structure, wherein (a) is a front view, (b) is a plan view,
(C) It is a side view.

FIG. 4 is a perspective view showing a truss member provided on the dome roof.

FIG. 5 is a perspective view showing support legs constituting the dome roof.

FIG. 6 is a side sectional view showing an example of the seismic isolation device provided on the dome roof.

FIG. 7 is an elevational sectional view showing a roof material of the dome roof.

FIG. 8 is a plan view showing a construction method of the dome roof.

FIG. 9 is a side view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stadium (existing facility) 5 Dome roof 6 Frame 7 Support leg 10 Central ring 11 Outer ring 12 Intermediate frame 13 Horizontal truss (truss member) 13a, 13b, 13c Truss split body 15 Unit frame 21 Cable 31 Vertical support 32 Diagonal support 35 underground beam (connection beam) 40 seismic isolation device 55 outer roof material 56 inner roof material

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoshinori Murai 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation (72) Inventor Toshiyuki Yamada 1-2-3 Shibaura, Minato-ku, Tokyo Shimizu Corporation (72) Inventor Chiyuki Iwakawa 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation (72) Inventor Naomori Taniguchi 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation (72) Inventor Makoto Kimura 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Masatake Miyashita 2-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Invention Ryuichi Takeuchi 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation (72) Inventor Hiroyoshi Yano 2-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation (72) Invention Taku Shindo 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation (72) Inventor Satoru Ishitani 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation (72) Inventor Kazuhiko Isoda Tokyo 1-2-3 Shibaura, Minato-ku, Shimizu Corporation (72) Inventor Tetsuya Nakatsuji Shimizu Corporation, 2-3-1, Shibaura, Minato-ku, Tokyo

Claims (9)

[Claims] 1. A dome roof frame having a ring-shaped central ring disposed at a central portion of the dome roof, and a ring-shaped ring disposed at an outer peripheral portion of the dome roof substantially concentrically with the central ring. An outer ring, an intermediate frame erected between the central ring and the outer ring, and a supporting leg constructed on the ground to support the outer ring, wherein the supporting leg extends in a vertical direction. A vertical support, an oblique support extending obliquely from the upper end of the vertical support toward the ground on the outer peripheral side thereof, and a connecting beam connecting a lower end of the vertical support and a lower end of the oblique support. Dome roof structure characterized by having. 2. The dome roof structure according to claim 1, wherein the intermediate frame is formed of a plurality of substantially fan-shaped unit frames divided in a circumferential direction around the center ring. Dome roof structure. 3. The dome roof structure according to claim 1, wherein an outer peripheral roofing material is stretched on the intermediate frame between the central ring and the outer peripheral ring, and the upper part of the intermediate ring is provided above the central ring. A dome roof structure, wherein an inner peripheral roof material that covers an upper part of the central ring is installed at a predetermined distance above the outer peripheral roof material. 4. The dome roof structure according to claim 1, wherein a relative movement between the outer peripheral ring and the support leg due to horizontal vibration of the outer peripheral ring and the support leg is attenuated. A dome roof structure comprising a seismic isolation device that suppresses relative movement in the vertical direction. 5. The dome roof structure according to claim 1, wherein the frame is integrally provided with a truss member extending in a chord direction of the dome roof and located in a vertical plane. A dome roof structure, wherein both ends of the truss member are connected to the support legs. 6. The dome roof structure according to any one of claims 1 to 5, wherein the intermediate frame is formed in a substantially arc shape in a vertical sectional view, and the central frame side end portion and the outer peripheral portion side of the intermediate frame are formed. A dome roof structure, wherein a cable is stretched between the ends and the length of the cable is adjustable. 7. A ring-shaped central ring is installed at the center of the dome roof to be erected, and a support leg is installed on the outer peripheral portion, and an outer peripheral ring is erected on the support leg. And an intermediate frame between the outer ring and, when installing the intermediate frame, first, a step of grounding a substantially fan-shaped unit frame obtained by dividing the intermediate frame into a plurality in the circumferential direction. Drawing the unit frame below the dome roof to be erected, lifting the unit frame, and bridging the unit frame between the central ring and the outer peripheral ring; and Repeating the step of moving in the circumferential direction along the center ring and the outer ring to fix it at a predetermined position, Dome construction method of a roof, characterized in that joining. 8. The method for constructing a dome roof according to claim 7, wherein a truss member extending in a chord direction of the dome roof to be erected is installed integrally with the intermediate frame.
A truss divided body obtained by dividing the truss member into a plurality of pieces along its length direction is integrated into the unit frame in advance, and the unit frame is fixed at a predetermined position, and the unit frame is adjacent to the truss member. A method of constructing a dome roof, wherein when joining to another unit frame, the truss member is also joined to another truss member incorporated in the other unit frame. 9. The method of constructing a dome roof according to claim 7, wherein the dome roof is erected above an existing facility.