JP5484179B2 - Anchor pin member in air dome method - Google Patents
Anchor pin member in air dome method Download PDFInfo
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- JP5484179B2 JP5484179B2 JP2010103184A JP2010103184A JP5484179B2 JP 5484179 B2 JP5484179 B2 JP 5484179B2 JP 2010103184 A JP2010103184 A JP 2010103184A JP 2010103184 A JP2010103184 A JP 2010103184A JP 5484179 B2 JP5484179 B2 JP 5484179B2
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- 238000000034 method Methods 0.000 title claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 50
- 239000010959 steel Substances 0.000 claims description 50
- 238000003466 welding Methods 0.000 claims description 38
- 239000004570 mortar (masonry) Substances 0.000 claims description 24
- 239000011248 coating agent Substances 0.000 claims description 23
- 238000000576 coating method Methods 0.000 claims description 23
- 239000012528 membrane Substances 0.000 claims description 20
- 238000010276 construction Methods 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 239000003973 paint Substances 0.000 claims 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 41
- 239000004800 polyvinyl chloride Substances 0.000 description 41
- 239000000758 substrate Substances 0.000 description 15
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 13
- 239000011347 resin Substances 0.000 description 13
- 229920005989 resin Polymers 0.000 description 13
- 239000000463 material Substances 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000005304 joining Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000002788 crimping Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000004080 punching Methods 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しドーム屋根を構築するエアードーム工法 (登録商標、以下同じ) におけるアンカーピン部材に関するものである。 The present invention relates to an air dome construction method for building a dome roof by covering the upper part of a structure such as a storage tank for storing various stored materials such as liquids such as water and petroleum, low-temperature liquefied gas, digestion gas, powder, and granular materials (registered trademark). , The same shall apply hereinafter).
貯槽等構築物の上部を被覆しドーム屋根を構築するエアードーム工法について、図４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の上部を被覆する割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、あるいはコンクリート構造と金属構造などを組み合わせて形成する。
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の上部にモルタルやコンクリート１０８などの屋根部材を施工する。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 covering the upper part of a structure such as a storage tank and constructing a dome roof will be described with reference to FIG.
The storage tank 101 is formed of a flat bottom circular bottom plate 103, a cylindrical side wall 104 standing near the outer periphery of the bottom plate 103, and a blast-shell-shaped dome roof 102 covering the top 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 hermetically fixed to the upper end of the side wall 104, and the blower 106 is used to Air is introduced into the lower part to be tensioned, and a roof member such as mortar or concrete 108 is applied to the upper part of the tensioned flexible film body 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.
図５に示すように、上記エアードーム工法で使用する可撓膜体１０５の上面にアンカーピン１０７を配置して固着する。このアンカーピン１０７はモルタル及びコンクリート１０８の内部に位置している。 As shown in FIG. 5, an anchor pin 107 is disposed and fixed on the upper surface of the flexible film body 105 used in the air dome method. The anchor pin 107 is located inside the mortar and concrete 108.
図６は、従来のアンカーピン部材の断面説明図である。
アンカーピン１０７は、塩ビ鋼板製基板１０９の裏面（図では上面）中央にナット１１０を固着し、このナット１１０にボルト（図示せず）を螺合形成し、該塩ビ鋼板製基板１０９の表面（図では下面）は塩化ビニール樹脂塗膜１１１が施されており、この塩化ビニール樹脂塗膜１１１と可撓膜体１０５とが溶着剤を介して溶着固定される。
FIG. 6 is a cross-sectional explanatory view of a conventional anchor pin member.
The anchor pin 107 has a nut 110 fixed to the center of the back surface (upper surface in the figure) of the PVC steel plate substrate 109, and a bolt (not shown) is screwed to the nut 110, so that the surface of the PVC steel plate substrate 109 ( In the figure, the lower surface) is provided with a vinyl chloride resin coating film 111, and the vinyl chloride resin coating film 111 and the flexible film body 105 are welded and fixed via a welding agent.
図７（ア）は図６の上から見た平面説明図、（イ）は図６の下から見た平面説明図である。
図示例で示す角型のナット１１０は、固定プレート、つまり塩ビ鋼板製基板１０９の裏面側の鋼板面に隅肉溶接、スタッド溶接などによって固着している。そのため、表面側の塩化ビニール樹脂塗膜１１１は溶融焼却範囲１１２及びグラインダー研削範囲１１３に示すように比較的広い範囲に亘って溶接の熱によって変色と変形を生じ、塩化ビニール樹脂塗膜１１１が剥がれてしまう。
FIG. 7A is an explanatory plan view seen from the top of FIG. 6, and FIG. 7A is an explanatory plan view seen from the bottom of FIG.
The square nut 110 shown in the illustrated example is fixed to a fixed plate, that is, a steel plate surface on the back side of the PVC steel plate substrate 109 by fillet welding, stud welding, or the like. Therefore, the vinyl chloride resin coating film 111 on the surface side is discolored and deformed by the heat of welding over a relatively wide range as shown in the melt incineration range 112 and the grinder grinding range 113, and the vinyl chloride resin coating film 111 is peeled off. End up.
上記エアードーム工法に関する発明には、特許第２８２６７８３号公報「コンクリート製ドーム屋根における可撓膜体の固定構造」がある。この発明は、可撓膜体の上面に、プレート中央部で立設したアンカーピンを配置し、該プレートを可撓膜体に溶着固定し、このアンカーピンをモルタル及びコンクリートの内部に位置させている。
The invention relating to the air dome method includes Japanese Patent No. 2826778, “Flexible film body fixing structure on concrete dome roof”. In this invention, an anchor pin erected at the center of the plate is arranged on the upper surface of the flexible membrane body, the plate is welded and fixed to the flexible membrane body, and the anchor pin is positioned inside the mortar and concrete. Yes.
図５及び図６に示すように、可撓膜体１０５の上面にアンカーピン１０７のナット１１０を立設した塩ビ鋼板製基板１０９を溶着固定する際に、塩ビ鋼板製基板１０９の中央部にアンカーピン１０７のナット１１０を溶接固定する時に塩ビ塗膜面の中央部分が溶融焼却状態となり、その箇所をグラインダーで削り取るために可撓膜体との溶着剤による溶着強度が不十分となるため、確実に溶着するのが難しかった。
また、溶接熱により鋼板と塩化ビニール樹脂塗膜との剥離や溶着強度の不足が生じ、塩ビ鋼板製基板１０９と可撓膜体１０５との溶着不良に伴い、塩ビ鋼板製基板１０９を介して可撓膜体１０５をモルタルに密着させることが難しくなった。
As shown in FIGS. 5 and 6, when the PVC steel plate substrate 109 with the nut 110 of the anchor pin 107 erected on the upper surface of the flexible film body 105 is welded and fixed, the anchor is attached to the central portion of the PVC steel plate substrate 109. When the nut 110 of the pin 107 is fixed by welding, the central portion of the surface of the polyvinyl chloride coating is melted and incinerated. Since the portion is scraped off by a grinder, the welding strength with the flexible membrane body is insufficient, so It was difficult to weld.
Also, due to welding heat, peeling between the steel plate and the vinyl chloride resin coating film and insufficient welding strength occur, and due to poor welding between the PVC steel plate substrate 109 and the flexible film body 105, it is possible to pass through the PVC steel plate substrate 109. It has become difficult to bring the flexure body 105 into close contact with the mortar.
図６及び図７(ア)、(イ)に示すように、薄い塩ビ鋼板製基板１０９の裏面側の鋼板面にアンカーピン１０７のナット１１０を溶接によって固着すると、図の斜線範囲１１２に示すように表面側は溶接の熱によって変色と変形を生じて焼けた状態となり、焼けた箇所をグラインダー研削範囲１１３が塩化ビニール樹脂塗膜１１１の剥がれた箇所となる。また、薄い塩ビ鋼板製基板１０９にナット１１０を溶接して該ナット１１０にアンカーピン１０７を螺合固定する場合や、薄い塩ビ鋼板製基板１０９に直接、アンカーピン１０７をスタッド溶接する場合は、溶接熱により薄い塩ビ鋼板製基板１０９が変形する。
この変形を修正するためプレス加工をする必要が生じた。つまり、薄い塩ビ鋼板製基板１０９の板厚が薄い分、溶接による変形が著しく、また裏面の塩化ビニール樹脂塗膜１１１にも焼けや剥離などの影響がでるため、グラインダー処理が必要となった。
そこで、溶接を行わない方法、薄い塩ビ鋼板製基板１０９の塩化ビニール樹脂塗膜１１１が剥離することなく溶着面積を確保すること、さらに薄い塩ビ鋼板製基板１０９の変形や損傷を防ぐことが望まれていた。
As shown in FIG. 6 and FIGS. 7A and 7B, when the nut 110 of the anchor pin 107 is fixed to the steel plate surface on the back side of the thin PVC steel plate substrate 109 by welding, as shown in the hatched area 112 in the figure. Further, the surface side is discolored and deformed by the heat of welding and burned, and the burned portion becomes the portion where the grinder grinding range 113 is peeled off from the vinyl chloride resin coating film 111. In addition, when the nut 110 is welded to the thin PVC steel plate substrate 109 and the anchor pin 107 is screwed and fixed to the nut 110, or when the anchor pin 107 is directly stud welded to the thin PVC steel plate substrate 109, welding is performed. The thin PVC steel plate substrate 109 is deformed by heat.
In order to correct this deformation, it was necessary to press. That is, since the thin PVC substrate 109 is thin, deformation due to welding is remarkable, and the vinyl chloride resin coating film 111 on the back surface is also affected by burning and peeling, so that a grinder treatment is necessary.
Therefore, it is desired to prevent welding, secure a welding area without peeling the vinyl chloride resin coating film 111 of the thin PVC steel plate substrate 109, and prevent deformation and damage of the thin PVC steel plate substrate 109. It was.
上記紹介した特許第２８２６７８３号公報「コンクリート製ドーム屋根における可撓膜体の固定構造」の発明は、可撓膜体の上面にアンカーピンを配置し、このアンカーピンをモルタルの内部に位置させるものであるが、台座が四角形の場合はその角で可撓膜体が損傷することがあった。また、固定プレートとアンカーピンを用いて、可撓膜体を保護しモルタルと一体に接続する必要があった。 In the invention of the above-mentioned Japanese Patent No. 2826783 “Fixed structure of flexible membrane body in concrete dome roof”, an anchor pin is arranged on the upper surface of the flexible membrane body, and this anchor pin is positioned inside the mortar. However, when the pedestal is square, the flexible film body may be damaged at the corner. Moreover, it was necessary to protect the flexible film body using a fixing plate and an anchor pin and to be connected to the mortar integrally.
この発明の目的は、上述のような従来技術のアンカーピン構造が有する問題点に鑑みてなされたもので、可撓膜体を傷めず保護し、可撓膜体への取付けを確実に作業性良く、適正に施工するエアードーム工法におけるアンカーピン部材を提供するものである。
The object of the present invention was made in view of the problems of the conventional anchor pin structure as described above, and protects the flexible membrane body without damaging it, and ensures that the flexible membrane body is attached to the workability. The anchor pin member in the air dome construction method which is well constructed properly is provided.
請求項１記載のエアードーム工法におけるアンカーピン部材は、貯槽等構築物の上部を被覆しドーム屋根を構築するエアードーム工法における可撓膜体の上面に溶着剤を介して固着するアンカーピン部材であって、該アンカーピン部材は薄い塩ビ鋼板製の円形固定プレート中心部に穴を開け、該円形固定プレートの中心部に開けた穴周縁部のプレート部分を筒体ナット基部の上下各フランジで挟んでカシメ留め形成するとともに該筒体ナット底部を打抜き板材で閉塞し、かつ該筒体ナットにアンカーピンボルトを起立状に螺合固定し、さらに薄い塩ビ鋼板の鋼板面側の穴周縁部を隆起させ、該隆起した塗膜面側の窪みに前記下側のフランジが塗膜面から下方に突出しないように収納したことを特徴とする。 The anchor pin member in the air dome method according to claim 1 is an anchor pin member that adheres to the upper surface of the flexible membrane body in the air dome method in which the upper part of the structure such as a storage tank is covered and the dome roof is constructed, via a welding agent. The anchor pin member has a hole formed in the center portion of the circular fixed plate made of a thin PVC steel plate, and the plate portion of the peripheral portion of the hole formed in the center portion of the circular fixed plate is sandwiched between the upper and lower flanges of the cylindrical nut base. The cylindrical nut bottom is closed with a punched plate material, and the anchor pin bolt is screwed and fixed to the cylindrical nut in an upright manner, and the peripheral edge of the hole on the steel sheet surface side of the thin PVC steel sheet is raised, It is characterized in that the lower flange is housed in the raised depression on the coating film side so as not to protrude downward from the coating film surface.
請求項２記載のエアードーム工法におけるアンカーピン部材は、塩ビ鋼板製の円形固定プレート中心部の鋼板面側に固定した筒体ナットに螺合して起立するアンカーピンボルトを設けて形成し、該アンカーピンボルトはモルタル層及びその上面に施工するコンクリート層と接続する長いボルトで形成し、この長いボルトの中間部に施工時のモルタル層の厚み管理するナットを設けて形成したものである。
The anchor pin member in the air dome construction method according to claim 2 is formed by providing an anchor pin bolt that is screwed and raised to a cylindrical nut fixed to a steel plate surface side of a central portion of a circular fixing plate made of polyvinyl chloride steel plate. The pin bolt is formed by a long bolt connected to a mortar layer and a concrete layer to be constructed on the upper surface thereof, and a nut for controlling the thickness of the mortar layer at the time of construction is provided at an intermediate portion of the long bolt.
請求項１記載のエアードーム工法におけるアンカーピン部材は、貯槽等構築物の上部を被覆しドーム屋根を構築するエアードーム工法における可撓膜体の上面に溶着剤を介して固着するアンカーピン部材であって、該アンカーピン部材は薄い塩ビ鋼板製の円形固定プレート中心部に穴を開け、塩ビ鋼板の中心部に開けた穴周縁部のプレート部分を筒体ナット基部の上下各フランジで挟んでカシメ留め形成するとともに該筒体ナット底部を打抜き板材で閉塞し、かつ該筒体ナットにアンカーピンボルトを起立状に螺合固定し、さらに薄い塩ビ鋼板の鋼板面側の穴周縁部を隆起させ、該隆起した塗膜面側の窪みに前記下側のフランジが塗膜面から下方に突出しないように収納したので、可撓膜体は円形固定プレートによって損傷することが無く保護され、可撓膜体への取付けも確実で作業性が良く、能率良く適正に施工することができる。
また、溶接によらない機械的な接合となるため、接合強度は一定となる。さらに、溶接熱による塩ビ塗膜の損傷や鉄板のひずみが無くなり加工が容易となる。
このように円形固定プレートの変形や変質がないため、プレスやグラインダー等の後処理加工を必要とせず、円形固定プレートにおける塗膜面の中心部の僅かな部分を除いて塩ビ塗膜の面積が十分に確保でき、溶着剤による溶着面積が大きく取れ、可撓膜体とアンカーピン部材の円形固定プレートとの溶着性能を大幅に向上させることができる。さらに、固定プレートを薄くする事が可能となる。
また、筒体ナット底部を打抜き材で閉塞したことにより、アンカーピンボルトを袋体ナットへ挿着する時に、アンカーピンボルトが可撓膜体に直接接触することがなく、可撓膜体を損傷させることがない。
The anchor pin member in the air dome method according to claim 1 is an anchor pin member that adheres to the upper surface of the flexible membrane body in the air dome method in which the upper part of the structure such as a storage tank is covered and the dome roof is constructed, via a welding agent. The anchor pin member is formed with a hole in the center of a circular fixed plate made of a thin PVC steel plate, and the plate portion at the peripheral edge of the hole drilled in the center of the PVC steel plate is sandwiched between the upper and lower flanges of the cylindrical nut base and secured The cylindrical nut bottom is closed with a punched plate material, and anchor pin bolts are screwed and fixed to the cylindrical nut in an upright manner, and the peripheral edge of the hole on the steel sheet surface side of the thin PVC steel sheet is raised, Since the lower flange is housed in the hollow on the coated surface so that the lower flange does not protrude downward from the coated surface, the flexible film body is not damaged by the circular fixing plate. It is, attached to the flexible membrane body even better secure and workability, efficiently can be properly construction.
Moreover, since it becomes mechanical joining not based on welding, joining strength becomes fixed. Furthermore, damage to the PVC coating film due to welding heat and distortion of the iron plate are eliminated, facilitating processing.
Since there is no deformation or alteration of the circular fixed plate in this way, post-processing such as pressing or grinder is not required, and the area of the polyvinyl chloride coating film is small except for a small portion of the central part of the coating surface on the circular fixed plate. Sufficiently secured, a large welding area can be secured, and the welding performance between the flexible membrane body and the circular fixing plate of the anchor pin member can be greatly improved. Further, it is possible to make the fixing plate thin.
Also, since the bottom of the cylindrical nut is closed with a punching material, the anchor pin bolt does not directly contact the flexible membrane body when the anchor pin bolt is inserted into the bag nut, and the flexible membrane body is damaged. There is no.
請求項２記載のエアードーム工法におけるアンカーピン部材は、塩ビ鋼板製の円形固定プレート中心部の筒体ナットに螺合して起立するアンカーピンボルトを設けて形成し、該アンカーピンボルトはモルタル層及びその上面に施工するコンクリート層と接続する長いボルトで形成し、この長いボルトの中間部に施工時のモルタル層の厚み管理するナットを設けて形成したので、モルタル下面から可撓膜体が脱落しないように確りと密着させることができる。またボルトの中間部のナットがかくれるようにモルタル打設をすることによりモルタル層の厚さ管理が確りとでき、ボルトの中間部のナットと頭部材で可撓膜体とモルタルとコンクリートを一体化することができる。
The anchor pin member in the air dome construction method according to claim 2 is formed by providing an anchor pin bolt that is screwed into a cylindrical nut at the center of a circular fixed plate made of polyvinyl chloride steel plate, and the anchor pin bolt includes a mortar layer and its anchor pin bolt. Formed with long bolts connected to the concrete layer to be constructed on the top surface, and provided with a nut to control the thickness of the mortar layer at the middle of this long bolt, so that the flexible film body does not fall off from the bottom surface of the mortar Can be firmly attached. In addition, by placing the mortar so that the nut in the middle part of the bolt is covered, the thickness control of the mortar layer can be ensured, and the flexible film body, mortar and concrete are integrated with the nut and head member in the middle part of the bolt. Can be
この発明に係るエアードーム工法におけるアンカーピン部材の実施形態を、図１乃至図３に基づいて説明する。
図１は、アンカーピン部材６を示す斜視説明図である。図２は、図１のアンカーピン部材６の側面説明図である。
貯槽等構築物の上部を被覆しドーム屋根を構築するエアードーム工法における可撓膜体５の上面に固着するアンカーピン部材６は、薄い塩ビ鋼板の円形固定プレート７の中心部に穴 (図示せず) を開ける。
薄い塩ビ鋼板製の円形固定プレート７の中心部に開けた穴周縁部のプレート部分は断面ハの字状に隆起する。
薄い塩ビ鋼板の円形固定プレート７の中心部に開けた穴周縁部のプレート部分を筒体ナット８の基部の上下各フランジ８ａ（図では上面），８ｂ（図では下面）で挟んでカシメ留め形成する。筒体ナット８ｂの底部は打抜き板材８ｃで閉塞する。上下各フランジ８ａ，８ｂでカシメ留め形成する方法として、上下から挿入して圧着する方法と、片側から挿入してプレス圧着する方法があるがいずれの方法であってもよい。
この隆起したプレート部分の塗膜面側の窪みに下フランジ８ａが収納され、下フランジ８ａは薄い塩ビ鋼板製の円形固定プレート７の下面位置から外にはみ出ないように形成する。
筒体ナット８にはアンカーピンボルト９を垂直方向に向けて起立状に螺合して固定する。アンカーピンボルト９は外周面に螺子を刻設した長いボルトが使用される。アンカーピンボルト９である長いボルトの中間部位には中間ナット１０を取り付ける。この中間ナット１０の位置は、モルタル打設時のモルタル層厚さを決める目印となる位置に設ける。
An embodiment of an anchor pin member in the air dome method according to the present invention will be described with reference to FIGS. 1 to 3.
FIG. 1 is an explanatory perspective view showing the anchor pin member 6. FIG. 2 is an explanatory side view of the anchor pin member 6 of FIG.
An anchor pin member 6 fixed to the upper surface of the flexible membrane body 5 in the air dome method for covering the upper part of the structure such as a storage tank and constructing a dome roof has a hole (not shown) at the center of the circular fixing plate 7 made of a thin PVC steel plate. ) Is opened.
The plate portion at the peripheral edge of the hole formed in the central portion of the circular fixed plate 7 made of a thin PVC steel plate bulges in a cross-sectional C shape.
Clamping is formed by sandwiching the plate portion of the peripheral edge of the hole drilled in the center of the circular fixed plate 7 of a thin PVC steel plate between the upper and lower flanges 8a (upper surface in the drawing) and 8b (lower surface in the drawing) To do. The bottom of the cylinder nut 8b is closed with a punched plate material 8c. There are two methods for crimping the upper and lower flanges 8a and 8b, including a method of inserting and pressing from above and a method of pressing from one side and press-bonding.
The lower flange 8a is housed in a depression on the coating surface side of the raised plate portion, and the lower flange 8a is formed so as not to protrude from the lower surface position of the circular fixing plate 7 made of a thin PVC steel plate.
An anchor pin bolt 9 is fixed to the cylindrical nut 8 by being screwed upright in the vertical direction. As the anchor pin bolt 9, a long bolt having a screw cut on the outer peripheral surface is used. An intermediate nut 10 is attached to an intermediate portion of the long bolt which is the anchor pin bolt 9. The position of the intermediate nut 10 is provided at a position that serves as a mark for determining the thickness of the mortar layer when the mortar is placed.
アンカーピン部材６は、長いボルトを設けて形成したアンカーピンボルト９と、そのアンカーピンボルト９の基部が螺合する筒体ナット８と、その筒体ナット８の基部が中心部に開けた穴周縁部のプレート部分を挟んでカシメ留めした薄い塩ビ鋼板の円形固定プレート７で構成される。薄い塩ビ鋼板の円形固定プレート７の塩化ビニール樹脂塗膜１１が溶着剤を介して可撓膜体５の上面に確りと固定される。長いボルトを設けて形成したアンカーピンボルト９はモルタル層と強固に接続され、かつ可撓膜体５がモルタルの下面から脱落しないように固着される。
薄い塩ビ鋼板の円形固定プレート７は、隅角部がないので可撓膜体５を傷めることなく広い面で溶着剤を介して溶着することにより、可撓膜体への取付けの作業性が良く適正に施工することができる。
このアンカーピン部材６は、薄い塩ビ鋼板の円形プレート７の溶着面が広い面積を有し、充分な溶着強度が得られるため、アンカーピン部材６の配列及び連結作業もやり易く、作業能率良く施工することができる。
なお、ドーム屋根２の外周裾部に大きな力がかかるため、ドーム屋根の外周裾部のモルタルを厚く打設する必要がある。そのため外周裾部近傍のモルタル拡幅部におけるアンカーピンボルト９の中間ナット１０の取付け位置はモルタル施工厚さを厚くするように高く設定し、天頂部近傍の中間ナット１０の位置はモルタル施工厚さを薄くするように低く設定する。
この可撓膜体５の上面に張設されるアンカーピンボルト９の溶着力は、1本につき１２０〜２００ｋｇ程度となり、十分な溶着強度を有する。
The anchor pin member 6 includes an anchor pin bolt 9 formed by providing a long bolt, a cylindrical nut 8 into which a base portion of the anchor pin bolt 9 is screwed, and a hole peripheral portion where the base portion of the cylindrical nut 8 is opened at the center portion It is comprised with the circular fixed plate 7 of the thin vinyl chloride steel plate which crimped and clamped across the plate part. The vinyl chloride resin coating film 11 of the circular fixing plate 7 made of a thin PVC steel plate is securely fixed to the upper surface of the flexible film body 5 through a welding agent. The anchor pin bolt 9 formed by providing a long bolt is firmly connected to the mortar layer, and is fixed so that the flexible film body 5 does not fall off from the lower surface of the mortar.
Since the circular fixed plate 7 made of a thin PVC steel plate has no corners, it is welded through a welding agent on a wide surface without damaging the flexible film body 5, so that the workability of attaching to the flexible film body is good. Proper construction is possible.
This anchor pin member 6 has a wide area of welding surface of the circular plate 7 made of a thin PVC steel plate, and sufficient welding strength can be obtained. Therefore, it is easy to arrange and connect the anchor pin members 6 and perform the work efficiently. can do.
In addition, since a big force is applied to the outer periphery skirt part of the dome roof 2, it is necessary to drive the mortar of the outer periphery skirt part of the dome roof thickly. Therefore, the attachment position of the intermediate nut 10 of the anchor pin bolt 9 in the mortar widened portion near the outer peripheral skirt is set high so as to increase the mortar construction thickness, and the position of the intermediate nut 10 near the zenith portion is thinned. Set as low as you want.
The welding force of the anchor pin bolts 9 stretched on the upper surface of the flexible film body 5 is about 120 to 200 kg per one, and has a sufficient welding strength.
図２はアンカーピン部材６の断面説明図で、図３の（ア）は図２の上から見た平面説明図、（イ）は図２の下から見た平面説明図である。
図２、図３のように、薄い塩ビ鋼板の円形固定プレート７の中心部に穴を開け、その穴を開けた周縁のプレート部分の鋼板面側を断面ハの字状に隆起させる。この隆起した穴周縁のプレート部分を挟み込むように上下から上フランジ８ａと下フランジ８ｂで圧着し、かしめ固定するとともに筒体ナット８を薄い塩ビ鋼板の円形固定プレート７の鋼板面側の中心部に取り付ける。筒体ナット８の底部に位置する下フランジ８ｂの内部は、打抜き板材８ｃで閉塞する。このように筒体ナット８を薄い塩ビ鋼板の円形固定プレート７へ機械的にかしめて固定することにより、従来の溶接や溶着、或いは接着で固定する場合よりも固定強度は向上する。
また、筒体ナット８の底部に位置する下フランジ８ｂの内部は、打抜き板材８ｃで閉塞するため、アンカーピンボルトを筒体ナット８に挿着する際に、アンカーピンボルトが直接可撓膜体５に接することがなく、可撓膜体５を損傷させることがない。
2A and 2B are cross-sectional explanatory views of the anchor pin member 6. FIG. 3A is an explanatory plan view seen from the top of FIG. 2, and FIG. 2A is an explanatory plan view seen from the bottom of FIG.
As shown in FIGS. 2 and 3, a hole is made in the central portion of the circular fixed plate 7 of a thin PVC steel plate, and the steel plate surface side of the peripheral plate portion where the hole is made is raised in a cross-section of a square shape. The upper flange 8a and the lower flange 8b are pressed from above and below so as to sandwich the plate portion around the raised hole, and are fixed by caulking, and the cylindrical nut 8 is placed at the center of the thin steel plate circular fixing plate 7 on the steel plate surface side. Install. The inside of the lower flange 8b located at the bottom of the cylindrical nut 8 is closed with a punched plate material 8c. By fixing the cylindrical nut 8 by mechanically caulking and fixing it to the circular fixing plate 7 made of a thin PVC steel plate, the fixing strength is improved as compared with the case of fixing by conventional welding, welding, or adhesion.
Further, since the inside of the lower flange 8b located at the bottom of the cylindrical nut 8 is closed by the punched plate material 8c, the anchor pin bolt is directly attached to the flexible film body 5 when the anchor pin bolt is inserted into the cylindrical nut 8. There is no contact and the flexible membrane 5 is not damaged.
薄い塩ビ鋼板の円形固定プレート７は、塗膜面側の溶着面を塩ビコーティングしたカラー板金を使用し、例えば塩ビを溶かすトルエン系の溶着剤、つまりＢＭ溶着剤を用いて、塩ビ塗膜表面と可撓膜体５とを溶着する。薄い塩ビ鋼板の円形固定プレート７の中心部に取り付ける筒体ナット８はカシメ留めにより取り付けられる。このため、従来のように溶接を行わないので塩ビ鋼板の円形固定プレート７には熱変形がなく、塩化ビニール樹脂塗膜の焼けや剥離、変質がなく溶着面積を大きく取れ、溶着力を確保することができる。 The circular fixed plate 7 of a thin PVC steel plate uses a color sheet metal whose coating surface side is coated with polyvinyl chloride. For example, a toluene-based welding agent that dissolves PVC, that is, a BM welding agent, The flexible film body 5 is welded. The cylindrical nut 8 attached to the center part of the circular fixed plate 7 of a thin PVC steel plate is attached by caulking. For this reason, since welding is not performed as in the prior art, the circular fixing plate 7 of the PVC steel plate is not thermally deformed, and there is no burning, peeling, or alteration of the vinyl chloride resin coating film, so that a large welding area can be obtained and a welding force is ensured. be able to.
このように、薄い塩ビ鋼板の円形固定プレート７は溶接によらない機械的な接合となるため、接合強度は一定となる。さらに、溶接熱による被覆塗膜の損傷や鉄板のひずみや変形が無くなり加工が容易となる。ひずみや変形を修正するためのプレスやグラインダー等の後処理を必要としない。さらに薄い塩ビ鋼板の円形固定プレート７に直接ネジを切らないので厚さを薄くする事が可能となる。溶接やネジ切りなどがないため、全体にわたる製作の作業工程を少なくすることができる。
Thus, since the circular fixed plate 7 of a thin PVC steel plate is mechanically joined without welding, the joining strength is constant. Furthermore, the coating film is not damaged by the welding heat and the distortion and deformation of the iron plate are eliminated, and the processing becomes easy. There is no need for post-processing such as pressing or grinder to correct distortion or deformation. Furthermore, since the screw is not cut directly on the circular fixing plate 7 made of a thin PVC steel plate, the thickness can be reduced. Since there is no welding or threading, the entire manufacturing process can be reduced.
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の上部を被覆しドーム屋根を構築するエアードーム工法におけるアンカーピン部材に広範囲に適用することができる。
The present invention relates to an air dome construction method for constructing a dome roof by covering an upper part of a structure such as various storage tanks for storing various stored materials such as liquids such as water and petroleum, low-temperature liquefied gas, digestion gas, powder, and granular materials. It can be widely applied to the anchor pin member.
５ 可撓膜体
６ アンカーピン部材
７ 薄い塩ビ鋼板の円形固定プレート
８ 筒体ナット
８ａ 上フランジ
８ｂ 下フランジ
８ｃ 打抜き板材
９ アンカーピンボルト
１０ 中間ナット
１１ 塩化ビニール樹脂塗膜
１０１ 貯槽
１０２ ドーム屋根
１０３ 底版
１０４ 側壁
１０５ 可撓膜体
１０６ 送風機
１０７ アンカーピン
１０８ モルタル及びコンクリート
１０９ 塩ビ鋼板製基板
１１０ ナット
１１１ 塩化ビニール樹脂塗膜
１１２ 溶融焼却範囲
１１３ グラインダー研削範囲
5 Flexible membrane
6 Anchor pin member 7 Circular fixed plate of thin PVC steel plate
8 cylinder nut
8a Upper flange
8b Lower flange 8c Punched plate material 9 Anchor pin bolt
10 Intermediate nut 11 Vinyl chloride resin coating
101 Storage tank
102 Dome roof
103 Bottom plate
104 Side wall
105 Flexible membrane
106 Blower
107 Anchor pin
108 Mortar and Concrete 109 PVC Steel Plate Substrate 110 Nut 111 Vinyl Chloride Resin Coating 112 Melt Incineration Range 113 Grinder Grinding Range
Claims (2)
Formed by providing anchor pin bolts that stand by screwing into a cylindrical nut fixed on the steel plate surface side of the center of the circular fixed plate made of PVC steel plate, and the anchor pin bolts are connected to the mortar layer and the concrete layer to be constructed on the top surface The anchor pin member in the air dome method according to claim 1, wherein the anchor pin member is formed by a long bolt that is formed and provided with a nut for controlling the thickness of the mortar layer at the time of construction at an intermediate portion of the long bolt.
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