JP5585759B2 - Air membrane structure for dome roof construction - Google Patents
Air membrane structure for dome roof construction Download PDFInfo
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- JP5585759B2 JP5585759B2 JP2009297595A JP2009297595A JP5585759B2 JP 5585759 B2 JP5585759 B2 JP 5585759B2 JP 2009297595 A JP2009297595 A JP 2009297595A JP 2009297595 A JP2009297595 A JP 2009297595A JP 5585759 B2 JP5585759 B2 JP 5585759B2
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- 239000012528 membrane Substances 0.000 title claims description 85
- 238000010276 construction Methods 0.000 title description 10
- 230000002093 peripheral effect Effects 0.000 claims description 20
- 230000000630 rising effect Effects 0.000 claims description 8
- 238000003860 storage Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000003014 reinforcing effect Effects 0.000 description 7
- 239000004744 fabric Substances 0.000 description 5
- 239000002657 fibrous material Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 229920003002 synthetic resin Polymers 0.000 description 4
- 239000000057 synthetic resin Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 238000009958 sewing Methods 0.000 description 3
- 230000008961 swelling Effects 0.000 description 3
- 230000029087 digestion Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
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- Tents Or Canopies (AREA)
Description
この発明は、水や石油等の液体、低温液化ガス、消化ガス、粉体、粒状物などの各種貯蔵物を貯蔵する貯槽等構築物の上部を被覆するドーム（以下、本発明でいうドームとは球面、曲面、多面体等各種形状のものを含む）屋根等を構築するエアードーム工法における空気圧を受けてドーム屋根を構築する空気膜体構造に関するものである。 The present invention relates to a dome that covers the upper part of a structure such as a storage tank for storing various storage items such as liquids such as water and petroleum, low-temperature liquefied gas, digestion gas, powder, and granular materials (hereinafter referred to as the dome in the present invention). The present invention relates to an air membrane structure for constructing a dome roof by receiving air pressure in an air dome construction method for constructing a roof or the like (including various shapes such as a spherical surface, a curved surface, and a polyhedron).
貯槽等構築物の上部を被覆するドーム屋根を構築するエアードーム工法について、図９に基づいて説明する。
貯槽１０１は、平底円形の底版１０３と、この底版１０３の外周縁近傍に立設した円筒形状の側壁１０４と、この側壁１０４の上部を被覆する欠球殻形状のドーム屋根１０２とで形成する。これらの底版１０３、側壁１０４、及びドーム屋根１０２は、コンクリート構造又は金属構造、或いはコンクリート構造と金属構造などを組合せて形成する。
このドーム屋根１０２を施工するために、貯槽１０１の上部を被覆する可撓膜体１０５の周縁を側壁１０４の上端部に気密に固着し、送風機１０６を利用してこの可撓膜体１０５の下部に空気を導入して緊張させ、この緊張した可撓膜体１０５の上部にモルタル、コンクリートなどの屋根部材を施工する構築方法である。この可撓膜体１０５は、繊維織物に樹脂材料等をコーティングした可撓性を有する膜材が用いられている。
An air dome construction method for constructing a dome roof covering the upper part of a structure such as a storage tank will be described with reference to FIG.
The storage tank 101 is formed by a flat bottom circular bottom plate 103, a cylindrical side wall 104 standing in the vicinity of the outer peripheral edge of the bottom plate 103, and a spherical shell-shaped dome roof 102 covering the upper part of the side wall 104. The bottom plate 103, the side wall 104, and the dome roof 102 are formed by a concrete structure or a metal structure, or a combination of a concrete structure and a metal structure.
In order to construct the dome roof 102, the periphery of the flexible membrane body 105 covering the upper portion of the storage tank 101 is airtightly fixed to the upper end portion of the side wall 104, and the lower portion of the flexible membrane body 105 is utilized using the blower 106. This is a construction method in which air is introduced to be tensed and a roof member such as mortar and concrete is constructed on the top of the tensed flexible membrane 105. As the flexible film body 105, a flexible film material obtained by coating a fiber fabric with a resin material or the like is used.
上記ドーム屋根を構築するエアードーム工法に関する発明には、特許第３０８１９８０号公報「空気膜構造」がある。この発明は、空気圧を加えてドーム形状に貯槽等上部を被覆する可撓性膜体において、可撓性膜体の側面製作形状を、直線又は曲線、もしくは直線と曲線を組合せた形状とするとともに、所定加圧時の所望ドーム形状を基準にして、天頂部及び外周部がその基準より下に位置にするか、もしくはその基準より天頂部が上で外周部が下に位置する形状に形成するようにしたものである。 The invention relating to the air dome construction method for constructing the dome roof includes Japanese Patent No. 3081980, “air film structure”. According to the present invention, in the flexible membrane body that covers the upper part of the storage tank or the like in a dome shape by applying air pressure, the side surface production shape of the flexible membrane body is a straight line or a curve, or a combination of a straight line and a curve. Based on the desired dome shape at the time of predetermined pressurization, the zenith part and the outer peripheral part are positioned below the reference, or the zenith part is above the reference and the outer peripheral part is positioned below the reference. It is what I did.
また、可撓膜体の上面に設けるテンションテープに関する発明には、特許第２８２６７８４号公報「空気膜構造とその空気膜で形成したドーム屋根」がある。この発明は、貯槽等の構造物の上部を被覆する空気膜において、該空気膜に合成樹脂繊維材で形成した補強バンド、つまりテンションテープを配置したものである。 In addition, an invention relating to a tension tape provided on the upper surface of a flexible membrane includes Japanese Patent No. 2826784, “Air membrane structure and dome roof formed by the air membrane”. According to the present invention, a reinforcing band formed of a synthetic resin fiber material, that is, a tension tape is disposed on an air film covering an upper part of a structure such as a storage tank.
さらに、可撓膜体及びその上面に設ける補強バンドに関する発明には、特開平１０−３３１４２１号公報「コンクリート製ドーム屋根構築用の空気膜」がある。この発明は、構造物内の空気圧で展張させたドーム形状膜材上にコンクリートを打設してドーム形状のコンクリート屋根を構築する空気膜において、該ドーム形状膜材は樹脂材料等をコーティングしたバイアス織りの繊維織物でドームの平面直径方向に沿った帯形状の複数の膜材片同士の両側を接合し、この膜材上に補強バンドを配設してドーム形状に形成したものである。 Furthermore, the invention relating to the flexible membrane body and the reinforcing band provided on the upper surface thereof is disclosed in Japanese Patent Laid-Open No. 10-331421, “Air membrane for constructing concrete dome roof”. The present invention relates to an air film for constructing a dome-shaped concrete roof by placing concrete on a dome-shaped film material expanded by air pressure in a structure, and the dome-shaped film material is coated with a resin material or the like. Both sides of a plurality of strip-shaped membrane material pieces along the plane diameter direction of the dome are joined by a woven fiber fabric, and a reinforcing band is disposed on the membrane material to form a dome shape.
上記ドーム屋根を構築するエアードーム工法に関する従来の特許第３０８１９８０号公報「空気膜構造」の発明は、所定の空気圧を受けた状態で、所望のドーム形状が得られるように、可撓性膜体の側面製作形状を直線や曲線を組合せ、天頂部及び外周部の位置を配慮した可撓性膜体の空気膜構造であるが、所定形状を得るために圧力を高くして空気膜を無理に膨らませることがあるため、空気膜の強度を確保することが難しかった。 Japanese Patent No. 3081980 "Air film structure" related to the air dome construction method for constructing the dome roof described above is a flexible film body so that a desired dome shape can be obtained under a predetermined air pressure. The air membrane structure of the flexible membrane body considering the position of the zenith part and the outer peripheral part in combination with straight lines and curves, but the pressure is increased to obtain a predetermined shape and the air film is forced Since it may inflate, it was difficult to ensure the strength of the air film.
また、上記特許第２８２６７８４号公報「空気膜構造とその空気膜で形成したドーム屋根」の発明は、膜材の補強や変形の抑制を図り安全かつ美観に優れたド−ム屋根を構築するために、空気膜の上面に合成樹脂繊維材で形成した補強バンド、つまりテンションテープを配置したものであるが、補強バンドの製作と配置が難しかった。 Further, the invention of the above-mentioned Japanese Patent No. 2826784 “Air membrane structure and dome roof formed by the air membrane” is intended to construct a dome roof that is safe and excellent in aesthetics by reinforcing the membrane material and suppressing deformation. In addition, a reinforcing band formed of a synthetic resin fiber material, that is, a tension tape is arranged on the upper surface of the air film, but it is difficult to manufacture and arrange the reinforcing band.
さらにまた、上記特開平１０−３３１４２１号公報「コンクリート製ドーム屋根構築用の空気膜」の発明は、膜材と膜材片の構造、及び補強バンドの配置を考慮したものであるが、均一な形状を保持する大きい径のドーム屋根には適していなかった。 Furthermore, the invention of the above-mentioned Japanese Patent Application Laid-Open No. 10-331421 “Air membrane for constructing a concrete dome roof” takes into consideration the structure of the membrane material and membrane material pieces, and the arrangement of the reinforcing bands, but it is uniform. Not suitable for large diameter dome roofs that retain their shape.
この発明の目的は、上述のような従来技術の可撓膜体ドーム屋根が有する問題点に鑑みてなされたもので、空気圧を受けてドーム屋根を形成する可撓膜体の張力と強度を補完し、所定形状の確保と維持を図り、かつ偏りや変形の防止を図るドーム屋根構築用の空気膜体構造を提供するものである。
The object of the present invention was made in view of the above-mentioned problems of the flexible membrane dome roof of the prior art, and complements the tension and strength of the flexible membrane that forms the dome roof by receiving air pressure. Thus, an air membrane structure for constructing a dome roof is provided which ensures and maintains a predetermined shape and prevents deviation and deformation.
請求項１記載のドーム屋根構築用の空気膜体構造は、ドーム屋根を形成するための可撓膜体のすそ部における立ち上り角度が水平方向に対して斜め上方に１５度〜１８度である截頭円錐形状に形成し、該可撓膜体の截頭円錐頂部の高さは仕上りドーム屋根形状の高さよりも高く設定して形成し、この可撓膜体の上面に設置するテンションテープは、伸びが抑制された部材を用いて可撓膜体に沿う截頭円錐形状上面の双曲線長さ寸法に横断的及び縦断的に交叉させて配置形成したものである。 The air membrane body structure for constructing a dome roof according to claim 1 is such that the rising angle at the base of the flexible membrane body for forming the dome roof is 15 to 18 degrees obliquely upward with respect to the horizontal direction. It is formed in the shape of a head cone, the height of the top of the truncated cone of the flexible membrane body is set higher than the height of the finished dome roof shape, and the tension tape installed on the upper surface of the flexible membrane body is: It is formed by transversely and longitudinally crossing the hyperbolic length dimension of the upper surface of the truncated cone shape along the flexible film body using a member whose elongation is suppressed.
請求項２記載のドーム屋根構築用の空気膜体構造は、ドーム屋根を形成するための可撓膜体をすそ部における立ち上り角度が水平方向に対して斜め上方に１５度〜１８度である截頭円錐形状に形成し、該可撓膜体の截頭円錐頂部の高さは仕上りドーム屋根形状の高さよりも高く設定して形成し、この可撓膜体の上面に設置するテンションテープは、伸びのない部材を用いて欠球形状で所定ドーム形状の円弧長さ寸法に横断的及び縦断的に交叉させて配置形成したものである。
In the air membrane structure for dome roof construction according to claim 2, the rising angle at the base of the flexible membrane for forming the dome roof is 15 to 18 degrees obliquely upward with respect to the horizontal direction. It is formed in a head-cone shape, and the height of the top of the truncated cone of the flexible membrane body is set higher than the height of the finished dome roof shape, and the tension tape installed on the upper surface of this flexible membrane body is In this case, a non-elongating member is used to form an arc shape of a predetermined dome shape and cross and traverse longitudinally in a predetermined dome shape.
請求項３記載のドーム屋根構築用の空気膜体構造は、上記請求項１又は２記載のテンションテープを、可撓膜体に発生する張力を補完する格子状のベーステープであるＡパターンテンションテープと、このＡパターンテンションテープから４５度傾斜し可撓膜体のすそ部付近の周辺の膨らみを押えて矯正する４５度テープからなるＢパターンテンションテープと、天頂部を通りドーム高さを押えて保持するクロステープよりなるＣパターンテンションテープとで構成し、上記ＢパターンテンションテープとＣパターンテンションテープは一体化し上記Ａパターンテンションテープとで２体のテンションテープに形成したものである。 An air membrane structure for constructing a dome roof according to claim 3 is an A-pattern tension tape which is a lattice-shaped base tape that complements the tension tape generated in the flexible membrane body with the tension tape according to claim 1 or 2. And a B pattern tension tape made of 45 degree tape that is inclined 45 degrees from the A pattern tension tape and corrects the bulge in the vicinity of the skirt of the flexible membrane body, and a dome height passing through the zenith. The C pattern tension tape is formed of a cross tape to be held, and the B pattern tension tape and the C pattern tension tape are integrated to form two tension tapes with the A pattern tension tape.
請求項４記載のドーム屋根構築用の空気膜体構造は、上記請求項１又は３記載のテンションテープに予張を与えてテンションテープ相互の交点の位置をマーキングして縫製止めし、さらにテンションテープの先端部に輪止めを設け、この輪止めに円周方向に沿う周囲ロープを挿通し一体化して形成したものである。
An air membrane structure for constructing a dome roof according to claim 4 is provided by applying tension to the tension tape according to claim 1 or 3 to mark the position of the intersection between the tension tapes, and then stopping the sewing. A ring stopper is provided at the tip of the ring, and a peripheral rope extending in the circumferential direction is inserted into and integrated with the ring stopper.
請求項１記載のドーム屋根構築用の空気膜体構造は、ドーム屋根を形成するための可撓膜体のすそ部における立ち上り角度が水平方向に対して斜め上方に１５度〜１８度である截頭円錐形状に形成し、該可撓膜体の截頭円錐頂部の高さは仕上りドーム屋根形状の高さよりも高く設定して形成し、この可撓膜体の上面に設置するテンションテープは、伸びが抑制された部材を用いて可撓膜体に沿う截頭円錐形状上面の双曲線長さ寸法に横断的及び縦断的に交叉させて配置形成したので、テンションテープは可撓膜体に追従し伸びて張力を発生するため、可撓膜体のすそ部付近の外周部の膨らみを抑えるとともに可撓膜体の張力を補完し、可撓膜体が変形しない所定のドーム形状を得ることができる。 The air membrane body structure for constructing a dome roof according to claim 1 is such that the rising angle at the base of the flexible membrane body for forming the dome roof is 15 to 18 degrees obliquely upward with respect to the horizontal direction. It is formed in the shape of a head cone, the height of the top of the truncated cone of the flexible membrane body is set higher than the height of the finished dome roof shape, and the tension tape installed on the upper surface of the flexible membrane body is: The tension tape follows the flexible membrane body because it is formed by crossing the hyperbolic length of the upper surface of the frustoconical shape along the flexible membrane body in a transverse and longitudinal cross-section using a member whose elongation is suppressed. Since it stretches to generate tension, it is possible to obtain a predetermined dome shape that suppresses the swelling of the outer peripheral portion near the skirt portion of the flexible membrane body and complements the tension of the flexible membrane body so that the flexible membrane body does not deform. .
請求項２記載のドーム屋根構築用の空気膜体構造は、ドーム屋根を形成するための可撓膜体をすそ部における立ち上り角度が水平方向に対して斜め上方に１５度〜１８度である截頭円錐形状に形成し、該可撓膜体の截頭円錐頂部の高さは仕上りドーム屋根形状の高さよりも高く設定して形成し、この可撓膜体の上面に設置するテンションテープは、伸びのない部材を用いて欠球形状で所定ドーム形状の円弧長さ寸法に横断的及び縦断的に交叉させて配置形成したので、可撓膜体の外周部の膨らみを抑制して所定ドーム形状を保持でき、伸びのないテンションテープを適正に配置することで可撓膜体の張力を補完し、可撓膜体の膨らみを平均に押え、可撓膜体が変形しない所定のドーム形状保持ができる。
In the air membrane structure for dome roof construction according to claim 2, the rising angle at the base of the flexible membrane for forming the dome roof is 15 to 18 degrees obliquely upward with respect to the horizontal direction. It is formed in a head-cone shape, and the height of the top of the truncated cone of the flexible membrane body is set higher than the height of the finished dome roof shape, and the tension tape installed on the upper surface of this flexible membrane body is Since the non-elongated member is used to form a predetermined dome-shaped circular arc length dimension by crossing it transversely and longitudinally, the predetermined dome is suppressed by suppressing the swelling of the outer peripheral portion of the flexible membrane body. Preserving the shape of the dome by properly arranging tension tape that does not stretch, complements the tension of the flexible membrane body, holds the bulge of the flexible membrane body on average, and keeps the flexible dome body from deforming. Can do.
請求項３記載のドーム屋根構築用の空気膜体構造は、上記請求項１又は２記載のテンションテープを、可撓膜体に発生する張力を補完する格子状のベーステープであるＡパターンテンションテープと、このＡパターンテンションテープから４５度傾斜し可撓膜体のすそ部付近の周辺の膨らみを押えて矯正する４５度テープからなるＢパターンテンションテープと、天頂部を通りドーム高さを押えて保持するクロステープよりなるＣパターンテンションテープとで構成し、上記ＢパターンテンションテープとＣパターンテンションテープは一体化し上記Ａパターンテンションテープとで２体のテンションテープに形成したので、テンションテープの製作及び固定プレートへの取付け作業が簡単にできる。また、テンションテープの配設位置にずれを生じることなく適正に配置ができ、可撓膜体の張力を補完し、所定形状が保持できる。このように、テンションテープを適正に配置することにより、可撓膜体の張力抑制、形状維持が図られるため、可撓膜体の膨らみを適正に確保することができ、圧力上昇への安全性、信頼性が向上する。 An air membrane structure for constructing a dome roof according to claim 3 is an A-pattern tension tape which is a lattice-shaped base tape that complements the tension tape generated in the flexible membrane body with the tension tape according to claim 1 or 2. And a B pattern tension tape made of 45 degree tape that is inclined 45 degrees from the A pattern tension tape and corrects the bulge in the vicinity of the skirt of the flexible membrane body, and a dome height passing through the zenith. C pattern tension tape made of cross tape to hold, and the B pattern tension tape and C pattern tension tape are integrated into two tension tapes with the A pattern tension tape. Easy installation to the fixed plate. In addition, the tension tape can be properly disposed without causing a displacement, and the tension of the flexible film body can be complemented and a predetermined shape can be maintained. In this way, by properly arranging the tension tape, the tension of the flexible membrane body can be suppressed and the shape can be maintained, so that the bulge of the flexible membrane body can be properly secured and the safety against pressure rise. , Improve reliability.
請求項４記載のドーム屋根構築用の空気膜体構造は、上記請求項１又は３記載のテンションテープに予張を与えてテンションテープ相互の交点の位置をマーキングして縫製止めし、さらにテンションテープの先端部に輪止めを設け、この輪止めに円周方向に沿う周囲ロープを挿通し一体化して形成したので、テンションテープ相互の交点間隔を正確に確保し、テンションテープを適性確実に可撓膜体の上面に配置することができ、絡み付いてもつれることがなく、順繰りにドーム屋根周囲に沿って容易に展開させることができるため、空気圧を受ける可撓膜体の信頼性が向上する。
An air membrane structure for constructing a dome roof according to claim 4 is provided by applying tension to the tension tape according to claim 1 or 3 to mark the position of the intersection between the tension tapes, and then stopping the sewing. Since a ring stopper is provided at the tip of the ring, and a peripheral rope extending in the circumferential direction is inserted into the ring stopper and integrated, the distance between the intersection points of the tension tape is accurately secured, and the tension tape is flexibly and reliably flexible. Since it can arrange | position on the upper surface of a film | membrane body, it does not get entangled and can be easily deployed along the circumference | surroundings of a dome roof in order, the reliability of the flexible film | membrane body which receives an air pressure improves.
この発明に係るドーム屋根構築用の空気膜体構造の実施形態を、図１乃至図８に基づいて説明する。
図１は、空気圧による可撓膜体５の膨張状況と、テンションテープ３の配置状況を示す。
貯槽の円筒側壁４の直径Ｄはドーム屋根の直径Ｄに相当し、実線で示すドーム屋根の所定形状Ｓは中心点Ｏとする半径ｄの円弧とする。
可撓膜体５の製作時の全体形状は、平面円形の天頂部膜体１と外周コーン状の環状部膜体２とで截頭円錐形状Ｍに製作した場合を示す。
この可撓膜体５は伸びが大きく、縦方向と横方向の伸び率が異なり、横方向の伸びが縦方向の伸びに比べて２０〜３０％大きい。その為、可撓膜体５を所定ドーム形状より小さいドーム形状の大きさで製作し、空気圧で昇圧しモルタル施工時の高い内圧力にすると、図１の二点鎖線で示すように外周部位が所定ドーム形状よりも膨らみ天頂部が扁平となる形状、つまりおわん形状Ｈとなり所定のドーム形状を得ることが難しい。そこで、可撓膜体５は予め截頭円錐形状Ｍで設計、製作をするが、強度を確保し形状を所定ドーム形状に矯正して整えるために図３〜図７で示す３種ＡＢＣ各パターンのテンションテープを可撓膜体５の上面に横断的及び縦断的に交叉させて配置して、実線Ｓで示す所定ドーム形状を形成する。
An embodiment of an air membrane structure for constructing a dome roof according to the present invention will be described with reference to FIGS.
FIG. 1 shows an expansion state of the flexible film body 5 by air pressure and an arrangement state of the tension tape 3.
The diameter D of the cylindrical side wall 4 of the storage tank corresponds to the diameter D of the dome roof, and the predetermined shape S of the dome roof indicated by a solid line is an arc having a radius d with a center point O.
The overall shape of the flexible film body 5 at the time of manufacture shows a case where the planar circular zenith part film body 1 and the outer peripheral cone-shaped annular part film body 2 are manufactured in a frustoconical shape M.
The flexible film body 5 has a large elongation, the elongation rates in the vertical direction and the horizontal direction are different, and the elongation in the horizontal direction is 20 to 30% larger than the elongation in the vertical direction. Therefore, when the flexible membrane body 5 is manufactured with a dome shape size smaller than a predetermined dome shape, and the pressure is increased by air pressure to a high internal pressure at the time of mortar construction, as shown by the two-dot chain line in FIG. It is difficult to obtain a predetermined dome shape because the zenith portion bulges more than the predetermined dome shape, that is, a bowl shape H. Therefore, the flexible film body 5 is designed and manufactured in a frustoconical shape M in advance, but each of the three types of ABC patterns shown in FIGS. 3 to 7 is used to secure the strength and correct the shape to a predetermined dome shape. A predetermined dome shape indicated by a solid line S is formed by arranging the tension tape in a transversely and longitudinally crossing manner on the upper surface of the flexible film body 5.
図２(ａ)は可撓膜体５の正面図、図２(ｂ)はその平面図であり、図１に示す可撓膜体５の製作形状を示し、空気圧による膨張状況を示す。
ドーム屋根を形成するための可撓膜体５のすそ部における立ち上り角度は、水平方向から斜め上方に向けて傾斜する角度、つまりすそ部における立ち上り角度αを１５度〜１８度とし、頭を切り取った形状の截頭円錐形状Ｍとし、可撓膜体５のセンター高さは仕上がりドーム屋根形状の高さ、つまり所定ドーム高さよりも高く設定して形成する。
図２(ｂ)に示すように、平面円形の天頂部膜体１と扇形状の環状部膜体２とで截頭円錐形状Ｍに形成する可撓膜体５は、テンションテープを配設しない状態で高い空気圧を与えて図２(ａ)の二点鎖線Ｓで示す所定のドーム形状を得ることは難しく、通常は破線Ｈで示すように外周部が膨らんで天頂部が扁平となっておわん形状となる。そこで、所定のドーム形状を得るために空気圧を上げた際に膨張する可撓膜体の張力不足分を補い、つまり張力を補完し、かつ形状を整え保持するために後述するテンションテープを配設する。
2 (a) is a front view of the flexible membrane body 5, and FIG. 2 (b) is a plan view thereof, showing the shape of the flexible membrane body 5 shown in FIG.
The rising angle at the skirt portion of the flexible membrane body 5 for forming the dome roof is an angle inclined obliquely upward from the horizontal direction, that is, the rising angle α at the skirt portion is 15 degrees to 18 degrees, and the head is cut off. The center height of the flexible film body 5 is set to be higher than the height of the finished dome roof shape, that is, the predetermined dome height.
As shown in FIG. 2 (b), the flexible film body 5 formed in the frustoconical shape M by the planar circular zenith film body 1 and the fan-shaped annular film body 2 does not have a tension tape. It is difficult to obtain a predetermined dome shape indicated by a two-dot chain line S in FIG. 2 (a) by applying high air pressure in the state, and usually the outer peripheral portion swells and the zenith portion becomes flat as indicated by a broken line H It becomes a shape. Therefore, in order to compensate for the insufficient tension of the flexible membrane that expands when the air pressure is increased in order to obtain a predetermined dome shape, that is, a tension tape, which will be described later, is provided to supplement the tension and to maintain the shape. To do.
図３は、可撓膜体５の上面に設けるテンションテープ３の配置状況を示す全体平面説明図である。
可撓膜体５の上面に、格子状のベーステープであるＡパターンテンションテープ３Ａと４５度傾斜テープであるＢパターンテンションテープ３Ｂと屋根中心を通るクロステープであるＣパターンテンションテープ３Ｃとをそれぞれ配設する。
このＡ，Ｂ，Ｃ各パターンテンションテープ３Ａ、３Ｂ、３Ｃを可撓膜体５の上面に適正に配置することで、空気圧を高めた時に可撓膜体５が必要とする張力を補助、つまり張力を補完し、可撓膜体５のすそ部付近の外周部の膨らみを押えて抑制し所定ドーム形状を保持する。
FIG. 3 is an overall plan view showing an arrangement state of the tension tape 3 provided on the upper surface of the flexible film body 5.
On the upper surface of the flexible film body 5, an A pattern tension tape 3A, which is a lattice-shaped base tape, a B pattern tension tape 3B, which is a 45-degree inclined tape, and a C pattern tension tape 3C, which is a cross tape passing through the center of the roof, Arrange.
By properly arranging the A, B, and C pattern tension tapes 3A, 3B, and 3C on the upper surface of the flexible membrane body 5, the tension required by the flexible membrane body 5 when the air pressure is increased, that is, Tension is complemented and the swelling of the outer peripheral part near the skirt part of the flexible film body 5 is suppressed and suppressed, and a predetermined dome shape is maintained.
図３に示すように、ＡＢＣ各パターンのテンションテープ３Ａ、３Ｂ、３Ｃを組合せることにより、可撓膜体５の発生張力を抑制し、変形のない所定のドーム形状が確保でき、安全性及び信頼性が向上する。
また、可撓膜体５の上面に配置するテンションテープ３は、図４(ａ)、(ｂ)又は 図６(ａ)、(ｂ)に示すＡパターンテンションテープ３Ａを一体作り、図５(ａ)、(ｂ) 又は図７(ａ)、(ｂ)に示すＢパターンテンションテープ３ＢとＣパターンテンションテープ３Ｃを組合せたＢ、Ｃパターンテンションテープを別個に製作したので、工場での製作が簡単容易となり、現場取付けの作業も容易に作業性良くできる。
テンションテープ３の配置と取付けの手順は、次のように行う。
先ず、可撓膜体５を吊り込んで貯槽の上部周縁に取付け、１００ｐａ（パスカル）程度の低圧の空気圧を与えて可撓膜体５の上面で作業者が作業出来る程度の緊張状態に保持する。
次いで、可撓膜体５上面へテンションテープ３の吊り込み、展開、配置、固定を順次行うが、まず初めに格子状のベーステープであるＡパターンテンションテープ３Ａを吊り込み展開し所定の位置に配列し、続いて４５度傾斜テープであるＢパターンテンションテープ３Ｂと屋根中心を通るクロステープであるＣパターンテンションテープ３Ｃとを一体化したものを吊り込み展開し、上記Ａパターンテンションテープ３Ａの上にかぶせて所定の位置に配列し、このＡ及びＢ＋Ｃの各パターンテンションテープの先端を側壁上端部に固定する。
その後に、空気圧を１，８００ｐａ以上に上げて可撓膜体５を膨張させ、上記テンションテープ３に抑制された所定ドーム屋根形状に保持する。
As shown in FIG. 3, by combining the tension tapes 3A, 3B, and 3C of each ABC pattern, the generated tension of the flexible film body 5 can be suppressed, and a predetermined dome shape without deformation can be ensured. Reliability is improved.
Further, the tension tape 3 disposed on the upper surface of the flexible membrane body 5 is integrally formed with the A pattern tension tape 3A shown in FIGS. 4 (a) and 4 (b) or FIGS. 6 (a) and 6 (b). Since the B pattern tension tape 3B and the C pattern tension tape 3C shown in FIGS. 7 (a) and 7 (b), which are combined with the B pattern tension tape 3B, are manufactured separately, they can be manufactured at the factory. This makes it easy and easy to install on the site.
The procedure for arranging and attaching the tension tape 3 is as follows.
First, the flexible membrane body 5 is suspended and attached to the upper peripheral edge of the storage tank, and a low pressure air pressure of about 100 pa (Pascal) is applied to maintain the tension state so that the operator can work on the upper surface of the flexible membrane body 5. .
Next, the tension tape 3 is suspended from the upper surface of the flexible film body 5, developed, arranged, and fixed in order. First, the A-pattern tension tape 3 A, which is a grid-like base tape, is suspended and deployed to a predetermined position. Next, the B pattern tension tape 3B, which is a 45-degree inclined tape, and the C pattern tension tape 3C, which is a cross tape passing through the center of the roof, are suspended and unfolded, and the A pattern tension tape 3A is The tips of the pattern tension tapes A and B + C are fixed to the upper end of the side wall.
Thereafter, the air pressure is increased to 1,800 pa or more to inflate the flexible membrane body 5 and hold it in a predetermined dome roof shape restrained by the tension tape 3.
伸びを抑制した部材で形成したＡＢＣ各パターンのテンションテープ３の配置事例について、図４(ａ)、(ｂ)及び図５(ａ)、(ｂ)に基づいて説明する。
テンションテープ３は、可撓膜体５が高い空気圧を受けて膨らんだ場合、膜体に追従し伸びて張力を発生するため、可撓膜体５の製作形状に合わせた截頭円錐形状上面の双曲線と同じ長さ寸法に形成する。
ＡＢＣ各パターンのテンションテープ３は、強靭な引張り強度を有する合成樹脂繊維材、例えば伸びを抑制した高密度のポリエステル樹脂繊維を織込んだ材料で厚さ３〜６ミリメートル程度の部材を使用し、断面矩形の平帯形状、或いは断面扁平楕円形状の紐状のテープ等で形成する。このような厚手の繊維材料からなるテンションテープ３は、交差部が厚くならないように３本以上重なって交差しないように配慮する。
An arrangement example of the tension tape 3 of each ABC pattern formed by a member in which the elongation is suppressed will be described based on FIGS. 4 (a), 4 (b) and FIGS. 5 (a), 5 (b).
When the flexible film body 5 swells due to high air pressure, the tension tape 3 follows the film body and extends to generate tension. Therefore, the tension tape 3 has an upper surface of the truncated cone shape that matches the manufacturing shape of the flexible film body 5. The same length as the hyperbola is formed.
The tension tape 3 for each ABC pattern uses a synthetic resin fiber material having a strong tensile strength, for example, a material woven with a high-density polyester resin fiber with suppressed elongation, and a member having a thickness of about 3 to 6 mm. It is formed of a strip-like tape with a rectangular cross section or a string-like tape with a flat elliptical cross section. The tension tape 3 made of such a thick fiber material is taken into consideration so that three or more overlaps do not overlap so that the intersection does not become thick.
図４(ａ)、(ｂ)は、截頭円錐形状に製作するテンションテープの３Ａ１パターン格子状のベーステープを示す説明図である。
３Ａ１パターン格子状のベーステープは、図示例では截頭円錐形状の可撓膜体５の上面に、直交格子状に縦横８本ずつ合計１６本を配置した場合を示すが、ドーム屋根の直径の大きさに対応して２０本、２４本、・・・と増加させて可撓膜体５に発生する張力を補完するようにする。
4 (a) and 4 (b) are explanatory views showing a 3A1 pattern lattice base tape of tension tape manufactured in a truncated cone shape.
In the example shown in the figure, the 3A1 pattern grid base tape shows a case where a total of 16 pieces are arranged on the upper surface of the frustoconical flexible film body 5 in the form of an orthogonal grid in the vertical and horizontal directions. The tension is increased to 20, 24,... Corresponding to the size so as to complement the tension generated in the flexible film body 5.
図５(ａ)、(ｂ)は、截頭円錐形状に製作するテンションテープの３Ｂ１パターン４５度傾斜のクロステープと３Ｃ１パターン屋根中心を通るクロステープを示す説明図である。
３Ｂ１パターン４５度傾斜テープは、図示例では截頭円錐形状の可撓膜体５の上面に、四方向に合計８本配置した場合を示すが、ドーム屋根の直径の大きさや内圧力に対応して、貯槽の外周端より２本（合計８本）、３本（合計１２本）、４本（合計１６本）、・・・と増加させ、３Ａ１パターン格子状の本数と同数まで増加して膨らみを押え形状を整えるようにする。
屋根中心を通る３Ｃ１パターンクロステープは、図示例では円錐形状の可撓膜体５の上面に、中心で９０度に直交する２本を配置した場合を示すが、ドーム屋根の直径が大きい場合は中心で４５度に交差させバランスを保つように４本を設け、天頂部の高さを抑制し、所定のドーム高さを保持する。
なお、３Ｂ１パターン４５度傾斜テープと３Ｃ１パターン屋根中心を通るクロステープは、製作時に一体化し、設置作業時にバランス良く位置合わせをし易くする。
FIGS. 5A and 5B are explanatory views showing a 3B1 pattern 45C cross tape and a 3C1 pattern cross tape passing through the roof center of the tension tape manufactured in a truncated cone shape.
In the illustrated example, the 3B1 pattern 45 degree inclined tape shows a case where a total of eight 3B1 pattern 45-degree inclined tapes are arranged on the upper surface of the frustoconical flexible film body 5 in four directions, but corresponds to the diameter of the dome roof and the internal pressure. From the outer peripheral edge of the storage tank, it is increased to 2 (total 8), 3 (total 12), 4 (total 16), ..., and increased to the same number as the number of 3A1 pattern grids. Adjust the shape of the presser foot.
In the example shown in the figure, the 3C1 pattern cloth tape passing through the center of the roof shows a case where two pieces perpendicular to the center at 90 degrees are arranged on the upper surface of the conical flexible film body 5. However, when the diameter of the dome roof is large, Four are provided so as to cross at 45 degrees at the center to maintain balance, suppress the height of the zenith, and maintain a predetermined dome height.
The 3B1 pattern 45-degree inclined tape and the cross tape passing through the center of the 3C1 pattern are integrated at the time of manufacture, and facilitate positioning in a balanced manner during installation work.
伸びのない部材で形成したＡＢＣ各パターンのテンションテープ３の配置事例について、図６(ａ)、(ｂ)及び図７(ａ)、(ｂ)に基づいて説明する。
テンションテープ３は、可撓膜体５が高い空気圧を受けて膨らんでも伸びが殆んどないため、欠球形状で所定ドーム形状の円弧長さ寸法に形成する。
強靭な引張り強度を有する金属性や合成樹脂性の部材、例えば伸びのないワイヤや繊維材を使用し、断面矩形の平帯形状、或いは断面扁平楕円形状の紐状のテープ等で形成する。このような厚手の材料からなるテンションテープ３は、交差部が厚くならないように３本以上重なって交差しないように配慮する。
An arrangement example of the tension tape 3 of each ABC pattern formed of a member that does not stretch will be described with reference to FIGS. 6 (a) and 6 (b) and FIGS. 7 (a) and 7 (b).
The tension tape 3 is formed to have an arcuate length of a predetermined dome shape with a spherical shape because the flexible film body 5 hardly expands even when the flexible film body 5 swells due to high air pressure.
A metallic or synthetic resin member having a strong tensile strength, such as a wire or a fiber material that does not stretch, is used, and is formed of a strip-shaped tape with a rectangular cross section or a flat elliptical cross section. With respect to the tension tape 3 made of such a thick material, consideration should be given so that three or more overlapping portions do not overlap so that the intersecting portion does not become thick.
図６(ａ)、(ｂ)は、欠球形状に製作するテンションテープ３のうち３Ａ２パターン格子状のベーステープを示す説明図である。
３Ａ２パターン格子状のベーステープは、図示例では欠球形状の可撓膜体５の上面に、直交格子状に縦横８本ずつ合計１６本を配置した場合を示すが、ドーム屋根の直径の大きさに対応して２０本、２４本、・・・と増加させて可撓膜体５に発生する張力を補完するようにする。
6 (a) and 6 (b) are explanatory views showing a 3A2 pattern grid base tape of the tension tape 3 manufactured in the shape of a missing ball.
In the example shown in the figure, the 3A2 pattern grid base tape shows a case in which a total of 16 vertical and horizontal 8 tapes are arranged on the upper surface of the flexible film body 5 having a spherical shape. However, the diameter of the dome roof is large. Correspondingly, the tension is increased to 20, 24,... To supplement the tension generated in the flexible film body 5.
図７(ａ)、(ｂ)は、欠球形状に製作するテンションテープ３の３Ｂ２パターン４５度傾斜テープと、屋根中心を通る３Ｃ２パターンクロステープを示す説明図である。
３Ｂ２パターン４５度傾斜テープは、図示例では欠球形状の可撓膜体５の上面に、四方向に合計８本配置した場合を示すが、ドーム屋根の直径の大きさや内圧力に対応して、貯槽の外周端より２本（合計８本）、３本（合計１２本）、４本（合計１６本）、・・・と増加させ、３Ａ２パターン格子状の本数と同数まで増加して膨らみを押え形状を整えるようにする。
屋根中心を通るＣ２パターンクロステープは、図示例では欠球形状の可撓膜体５の上面に、中心で９０度に直交する２本を配置した場合を示すが、ドーム屋根の直径が大きい場合は中心で４５度に交差させバランスを保つように４本を設け、天頂部の高さを抑制し、所定のドーム高さを保持する。
なお、３Ｂ２パターン４５度傾斜テープと３Ｃ２パターン屋根中心を通るクロステープは、製作時に一体化し、設置作業時にバランス良く位置合わせをし易くする。
FIGS. 7A and 7B are explanatory views showing a 3B2 pattern 45-degree inclined tape of the tension tape 3 to be manufactured in a spherical shape and a 3C2 pattern cross tape passing through the center of the roof.
In the illustrated example, the 3B2 pattern 45-degree inclined tape shows a case where a total of eight 3B2 pattern 45-degree inclined tapes are arranged in four directions on the upper surface of the missing spherical flexible film body 5, but corresponds to the size of the dome roof and the internal pressure. Increase from the outer peripheral edge of the storage tank to 2 (total of 8), 3 (total of 12), 4 (total of 16), ... and increase to the same number as the number of 3A2 pattern lattices. Adjust the presser shape.
In the illustrated example, the C2 pattern cloth tape passing through the center of the roof shows a case where two pieces perpendicular to the center at 90 degrees are arranged on the upper surface of the flexible film body 5 having a spherical shape, but the diameter of the dome roof is large. 4 crosses at 45 degrees at the center to provide a balance, suppress the height of the zenith, and maintain a predetermined dome height.
The 3B2 pattern 45-degree inclined tape and the cross tape passing through the center of the 3C2 pattern are integrated at the time of manufacture, and facilitate positioning in a balanced manner during installation work.
図８は、テンションテープ３の部分説明図である。
テンションテープ３は、次のように寸法を定めて、あらかじめ工場で一体に製作しておく。
所定のドーム形状にした際のテンションテープ３の配置間隔ａ，ｂ、及びテンションテープ３相互の交点、つまり交差部６を算出し、テンションテープ３に予め５〜１０ｋｇＧの引張り荷重、つまり予張を与えてたるみを取り、所定位置の各交差部６をマーキングする。また、テープ周端部にテープ位置番号を記載する。Ａパターン及びＢ＋Ｃパターンごとに、マーキングした交差部６を斜めに１本又はクロスで縫製止めする。殊にＣパターンクロステープの天頂部の交差部は、中心位置を安定化させるためクロスの２本縫いとする。
このテンションテープ３の周縁部７に輪止め８を設け、その輪止め８に周囲ロープ９を挿通しておく。
なお、設置後の昇圧時にテンションテープ３が所定以上に曲った場合には、交差部６の縫製糸目をカッターで切断してテープの直線を確保し、無理な張力を受けないようにする。
このように、テンションテープ３の端縁を輪止め８として周囲ロープ９を設けることにより、テンションテープ３の配設作業時に、テンションテープ３が絡み付いてもつれることがなく、順繰りにドーム屋根周囲に沿って容易に展開させることができる。
なお、このテンションテープ３の周縁部７の先に設けた周囲ロープ９は、テンションテープ３配列時に切断し撤去する。
FIG. 8 is a partial explanatory view of the tension tape 3.
The tension tape 3 is dimensioned as follows and manufactured in advance at the factory.
The arrangement intervals a and b of the tension tape 3 and the intersections of the tension tapes 3 when the predetermined dome shape is formed, that is, the intersection 6 are calculated, and a tensile load of 5 to 10 kgG, that is, a pretension is applied to the tension tape 3 in advance. The given slack is taken and each intersection 6 at a predetermined position is marked. In addition, the tape position number is written on the peripheral edge of the tape. For each A pattern and B + C pattern, the marked intersection 6 is diagonally sewn with one or a cross. In particular, the cross portion of the top of the C pattern cloth tape has two cross stitches to stabilize the center position.
A ring stopper 8 is provided on the peripheral edge 7 of the tension tape 3, and a surrounding rope 9 is inserted through the ring stopper 8.
If the tension tape 3 bends more than a predetermined value during pressurization after installation, the sewing thread at the intersection 6 is cut with a cutter to ensure a straight line of the tape so as not to receive excessive tension.
In this way, by providing the peripheral rope 9 with the end edge of the tension tape 3 as the ring stopper 8, the tension tape 3 is not entangled and tangled at the time of the installation work of the tension tape 3, and the dome roof is sequentially arranged. Can be easily deployed.
The peripheral rope 9 provided at the tip of the peripheral edge 7 of the tension tape 3 is cut and removed when the tension tape 3 is arranged.
この発明は、水や石油等の液体、低温液化ガス、消化ガス、粉体、粒状物などの各種貯蔵物を貯蔵する種々の貯槽等構築物について、その上部を被覆するドーム屋根の可撓膜体及びテンションテープに広範囲に適用することができる。
The present invention relates to a flexible membrane body having a dome roof covering the upper part of various storage tanks and other structures for storing various storages such as liquids such as water and petroleum, low-temperature liquefied gas, digestion gas, powder, and granular materials. And can be widely applied to tension tape.
１ 天頂部膜体
２ 環状部膜体
３ テンションテープ
４ 側壁
５ 可撓膜体
６ 交差部
７ 周縁部
８ 輪止め
９ 周囲ロープ
１０１ 貯槽
１０２ ドーム屋根
１０３ 底版
１０４ 側壁
１０５ 可撓膜体
１０６ 送風機
1 Zenith membrane
2 Annular membrane
3 Tension tape
4 Side walls
5 Flexible membrane
6 intersection
7 Perimeter
8 Ring stop
9 Surrounding rope
101 Storage tank
102 Dome roof
103 Bottom plate
104 Side wall
105 Flexible membrane
106 Blower
Claims (4)
Pretension is applied to the tension tape, the position of the intersection of the tension tape is marked and sewn, and a ring stopper is provided at the tip of the tension tape, and a peripheral rope along the circumferential direction is inserted through the ring stopper. The air membrane structure for constructing a dome roof according to claim 1 or 3, wherein the air film body structure is formed integrally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009297595A JP5585759B2 (en) | 2009-12-28 | 2009-12-28 | Air membrane structure for dome roof construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009297595A JP5585759B2 (en) | 2009-12-28 | 2009-12-28 | Air membrane structure for dome roof construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2011137328A JP2011137328A (en) | 2011-07-14 |
| JP5585759B2 true JP5585759B2 (en) | 2014-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2009297595A Active JP5585759B2 (en) | 2009-12-28 | 2009-12-28 | Air membrane structure for dome roof construction |
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| JP (1) | JP5585759B2 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59131419U (en) * | 1983-02-22 | 1984-09-03 | 日本鋼管株式会社 | Membrane materials for membrane structures |
| JP3081980B2 (en) * | 1992-04-30 | 2000-08-28 | 株式会社石井鐵工所 | Air film structure |
| JP2826784B2 (en) * | 1992-06-25 | 1998-11-18 | 株式会社石井鐵工所 | Air film structure and dome roof formed by the air film |
| JP3087261B2 (en) * | 1997-03-10 | 2000-09-11 | エイチピー・ドームジャパン株式会社 | Dome construction method |
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2009
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| JP2011137328A (en) | 2011-07-14 |
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