JPS63284373A - Method for mounting roof to cylindrical double shell storage tank - Google Patents
Method for mounting roof to cylindrical double shell storage tankInfo
- Publication number
- JPS63284373A JPS63284373A JP11794987A JP11794987A JPS63284373A JP S63284373 A JPS63284373 A JP S63284373A JP 11794987 A JP11794987 A JP 11794987A JP 11794987 A JP11794987 A JP 11794987A JP S63284373 A JPS63284373 A JP S63284373A
- Authority
- JP
- Japan
- Prior art keywords
- roof
- side plate
- outer tank
- tank
- tank side
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 12
- 238000010276 construction Methods 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000012779 reinforcing material Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は屋根付きの外槽と内槽とによって構成される円
筒形二重殻貯槽における屋根の取付方法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for attaching a roof to a cylindrical double-shell storage tank composed of an outer tank and an inner tank with a roof.
（従来技術）
最近、円筒形二重殻貯槽の組立工法として、外槽組立後
に内槽を組立てる外槽先行工法が多く採用されている。(Prior Art) Recently, as a construction method for assembling a cylindrical double-shell storage tank, an outer tank advance construction method in which an inner tank is assembled after the outer tank is assembled has been widely adopted.
この工法によると、内槽の組立を外槽内で風雨の影響を
受けない状態で行なうことができるため、工期を短縮す
ることができる。According to this construction method, the inner tank can be assembled inside the outer tank without being affected by wind and rain, so the construction period can be shortened.
従来、この外槽先行工法をとる場合、外槽屋根は外槽組
立段階で外槽側板上端に溶接固定し、内槽屋根は、内槽
側板の組立前に、外槽屋根下方に吊持しておき、内槽側
板組立後にこの内槽屋根を下降させて内槽側板の上端に
溶接固定するようにしている。そして、内槽屋根の吊持
、下降手段として、従来、第４図に示すように屋根周縁
の多数個所で外槽側板ａの上端部内面にジヤツキ架台す
を介してジヤツキ（手動式油圧ジヤツキ）Ｃを設置し、
このジヤツキＣで内槽屋根ｄを外槽屋根ｅ下方に吊持す
るか、あるいは第５図に示すように外槽屋根ｅの内面と
内槽屋根ｄの外面とをターンバックルｆで連結し、内槽
側板ｇの組立後、ジヤツキＣまたはターンバックルｆの
操作により内槽屋根ｄを下降させる手段をとっている。Conventionally, when using this outer tank construction method, the outer tank roof was welded and fixed to the upper end of the outer tank side panels during the assembly stage of the outer tank, and the inner tank roof was suspended below the outer tank roof before the inner tank side panels were assembled. After the inner tank side plates are assembled, the inner tank roof is lowered and fixed by welding to the upper end of the inner tank side plates. Conventionally, as a means for suspending and lowering the inner tank roof, jacks (manual hydraulic jacks) are installed on the inner surface of the upper end of the outer tank side plate a at multiple points around the roof periphery via jacks (manual hydraulic jacks), as shown in Fig. 4. Set up C,
Either suspend the inner tank roof d below the outer tank roof e with this jack C, or connect the inner surface of the outer tank roof e and the outer surface of the inner tank roof d with a turnbuckle f, as shown in FIG. After the inner tank side plate g is assembled, the inner tank roof d is lowered by operating a jack C or a turnbuckle f.
ところが、この従来の屋根取付方法によると、内槽屋根
の下降のための多数のジヤツキＣまたはターンバックル
の操作を、両槽間の狭い空間で行なわなければならない
ため、作業性が悪く、また安全性に問題があった。However, according to this conventional roof mounting method, many jacks or turnbuckles for lowering the inner tank roof must be operated in the narrow space between the two tanks, which results in poor workability and safety issues. There was a problem with sexuality.
（発明の目的）
そこで本発明は、内槽側板組立後における内槽屋根の下
降操作を外槽外部の広い空間で安全に能率良く行なうこ
とができる円筒形二重殻貯槽の屋根取付方法を提供する
ものである。(Objective of the Invention) Therefore, the present invention provides a method for attaching the roof of a cylindrical double-shell storage tank, which allows the lowering operation of the inner tank roof after the inner tank side plates are assembled to be carried out safely and efficiently in a wide space outside the outer tank. It is something to do.
（発明の構成）
本発明は、外槽側板と、この外槽側板の上端に取付けら
れる外槽屋根と、外槽側板の内側に設けられる内槽側板
と、上記外槽屋根の下方において内槽側板の上端に取付
けられる内槽屋根とによって構成される円筒形二重殻貯
槽において、上記外槽屋根と内槽屋根を連結材を介して
一体に昇降可能に連結して屋根構造体を構成し、外槽側
板組立後、この屋根構造体の外槽屋根を上記外槽側板の
上端にスペーサを介して支持させておき、一方、外槽側
板の上端部外面と外槽屋根の外面との間に、上記屋根構
造体を昇降させる昇降装置を設置し、内槽側板の組立後
、上記スペーサを取外し、上記昇降装置により屋根構造
体を下降させて、外槽屋根を外槽側板の上端に、内槽屋
根を内槽側板の上端にそれぞれ固定するものである。(Structure of the Invention) The present invention includes an outer tank side plate, an outer tank roof attached to the upper end of the outer tank side plate, an inner tank side plate provided inside the outer tank side plate, and an inner tank installed below the outer tank roof. In a cylindrical double-shell storage tank composed of an inner tank roof attached to the upper end of the side plate, the outer tank roof and the inner tank roof are connected via a connecting member so as to be able to move up and down to form a roof structure. After the outer tank side plates are assembled, the outer tank roof of this roof structure is supported by the upper end of the outer tank side plate via a spacer, and on the other hand, between the outer surface of the upper end of the outer tank side plate and the outer surface of the outer tank roof. A lifting device for lifting and lowering the roof structure is installed, and after assembling the inner tank side plate, the spacer is removed, and the roof structure is lowered by the lifting device, and the outer tank roof is placed on the upper end of the outer tank side plate. The inner tank roof is fixed to the upper end of each inner tank side plate.
このように内槽屋根を外槽屋根と一体に下降させるため
、この下降操作を外槽外側で行なうことができる。Since the inner tank roof is lowered together with the outer tank roof in this way, this lowering operation can be performed outside the outer tank.
（実施例） 本発明の実施例を第１図乃至第３図によって説明する。(Example) Embodiments of the present invention will be described with reference to FIGS. 1 to 3.
第１図は屋根取付けの第１段階として、外槽側板１が組
立てられ、この外槽、側板１上に屋根構造体２が載置支
持された状態を示している。屋根構造体２は、外槽屋根
３と内槽屋根４とが互いの周縁部で多数の吊り材５によ
って一体に昇降可能に連結されて成り、外槽屋根３の周
縁部が、外槽側板１の上端部内面に固着された補強材６
、および補強材６上に着脱自在に設けられたスペーサ７
を介して外槽側板１上端に支持される。FIG. 1 shows a state in which the outer tank side plate 1 is assembled as the first step of roof installation, and the roof structure 2 is placed and supported on the outer tank and the side plate 1. The roof structure 2 is composed of an outer tank roof 3 and an inner tank roof 4 that are connected at their peripheral edges so as to be able to rise and fall together by a number of hanging members 5, and the peripheral edge of the outer tank roof 3 is connected to the outer tank side plate. Reinforcing material 6 fixed to the inner surface of the upper end of 1
, and a spacer 7 removably provided on the reinforcing member 6.
It is supported on the upper end of the outer tank side plate 1 through the.
スペーサ７は、周方向間欠的に設けられ、このスペーサ
７によって、外槽屋根３、すなわち屋根構造体２の下降
式Ｓ１が確保されている。８は外槽側板１の上端部外面
に固着された補強材としてのトップガーダ−である。The spacers 7 are provided intermittently in the circumferential direction, and the spacers 7 ensure the lowering type S1 of the outer tank roof 3, that is, the roof structure 2. Reference numeral 8 designates a top girder as a reinforcing material fixed to the outer surface of the upper end of the outer tank side plate 1.
なお、この段階では、外槽屋根３と外槽側板１との間に
おけるスペーサ７が無い個所で隙間が形成されるため、
この隙間からの雨水等の浸入防止のため、外槽屋根３の
周端部に仮屋根９が設置される。In addition, at this stage, a gap is formed between the outer tank roof 3 and the outer tank side plate 1 where there is no spacer 7, so
In order to prevent rainwater etc. from entering through this gap, a temporary roof 9 is installed at the peripheral end of the outer tank roof 3.
この状態で、外槽内で第２．３図に示す内槽側板１０の
組立が行なわれる。第２図は同側板１０の完了状態を示
しており、この状態で内槽屋根４と内槽側板１０との間
に隙間Ｓ２が形成される。In this state, the inner tank side plate 10 shown in FIG. 2.3 is assembled inside the outer tank. FIG. 2 shows the completed state of the same side plate 10, and in this state, a gap S2 is formed between the inner tank roof 4 and the inner tank side plate 10.
いいかえれば、この隙間Ｓ２が形成されるように、内槽
屋根４の高さ位置（内外槽側屋根４．３間の間隔）が内
槽側板１０の高さ寸法との関係において予め設定される
。また、スペーサ７による下降式Ｓ１は、この隙間８２
寸法と同等に設定される。In other words, the height position of the inner tank roof 4 (the distance between the inner and outer tank side roofs 4.3) is set in advance in relation to the height dimension of the inner tank side plate 10 so that this gap S2 is formed. . In addition, in the descending type S1 using the spacer 7, this gap 82
Set equal to dimension.
内槽側板１０の組立完了後、次の作業を行なう。After completing the assembly of the inner tank side plate 10, the following work is performed.
（イ） 仮屋根９を撤去した後、外槽屋根３の周端部外
面に、複数のブラケット１１を一定間隔置きに、かつ屋
根外周側に突出する状態で取付ける。(a) After removing the temporary roof 9, a plurality of brackets 11 are attached to the outer surface of the circumferential end of the outer tank roof 3 at regular intervals and protruding toward the outer circumference of the roof.
（ロ） トップガーダ−８上に、ブラケット１１ごと
に昇降装置としてのジヤツキ１２を設置し、ブラケット
１１と連結する。(b) A jack 12 as a lifting device is installed on the top girder 8 for each bracket 11 and connected to the bracket 11.
（ハ） この後、ジヤツキ１２により屋根構造体２を若
干上昇させ、スペーサ７を取外す。(c) After this, the roof structure 2 is slightly raised using the jack 12, and the spacer 7 is removed.
（ニ） つぎに、第３図に示すようにジヤツキ１２を縮
めて屋根構造体２を下降させ、内槽屋根４の周端を内槽
側板１０の上端に接触させる。このとき、外槽屋根３の
周端が補強材６の上面に接触する。(d) Next, as shown in FIG. 3, the jack 12 is retracted to lower the roof structure 2, and the peripheral end of the inner tank roof 4 is brought into contact with the upper end of the inner tank side plate 10. At this time, the peripheral edge of the outer tank roof 3 comes into contact with the upper surface of the reinforcing member 6.
（ホ） こうして接触させた内槽屋根４と内槽側板１０
、および外槽屋根３と補強材６（外槽側板１）とをそれ
ぞれ溶接結合する。(e) Inner tank roof 4 and inner tank side plate 10 brought into contact in this way
, and the outer tank roof 3 and the reinforcing material 6 (outer tank side plate 1) are welded together.
これにより、円筒形二重殻貯槽が組立てられ、吊り材５
およびジヤツキ１２の撤去により作業が完了する。As a result, a cylindrical double shell storage tank is assembled, and the hanging material 5
The work is completed by removing the jack 12.
なお、第２図の段階において、隙間８２寸法が、内槽側
板１０の寸法誤差や組立誤差等によって設定値通りとな
らない場合があり、この隙間８２寸法が下降式Ｓ１より
も大きくなると、第３図の屋根下降状態で、内槽屋根４
と内槽側板１ｏとの間になお隙間が残ることになる。こ
の点の対策としては、スペーサ７による下降式Ｓ１を、
内槽側板１０の寸法誤差等を見込んで隙間８２寸法の設
定値よりも大きく設定する一方、吊り材５の外槽屋根３
または内槽屋根４に対するピン取付部分に長孔を設け、
この長孔によって下降式Ｓ１と隙間Ｓ２寸法の差を吸収
する手段等をとることができる。In addition, at the stage shown in FIG. 2, the dimension of the gap 82 may not match the set value due to the dimensional error of the inner tank side plate 10, assembly error, etc., and if the dimension of the gap 82 becomes larger than that of the descending type S1, the third With the roof lowered as shown in the figure, the inner tank roof 4
A gap will still remain between this and the inner tank side plate 1o. As a countermeasure for this point, the descending type S1 using the spacer 7 is
Taking into account the dimensional error of the inner tank side plate 10, etc., the gap 82 is set larger than the set value, while the outer tank roof 3 of the hanging material 5
Or provide a long hole in the pin attachment part to the inner tank roof 4,
This elongated hole can be used as a means to absorb the difference in size between the descending type S1 and the gap S2.
ところで、昇降装置としては、上記実施例で示した手動
式油圧ジヤツキに限らず、ねじ式ジヤツキ、自動油圧ジ
ヤツキあるいはチェンブロック等を使用することができ
る。By the way, the elevating device is not limited to the manual hydraulic jack shown in the above embodiment, but may also be a screw type jack, an automatic hydraulic jack, a chain block, or the like.
（発明の効果）
上記のように本発明方法によるときは、外槽屋根と内槽
屋根を吊り材により一体化し、この両屋根一体の屋根構
造体を、内槽側板組立後、外槽屋根と外槽側板の外面間
に設けた昇降装置により下降させて、内槽屋根と内槽側
板、および外槽屋根と外槽側板とをそれぞれ結合するよ
うにしたから、上記屋根下降操作を槽外の広い空間で簡
単に能率良く、そして安全に行なうことができるもので
ある。(Effect of the invention) As described above, when the method of the present invention is used, the outer tank roof and the inner tank roof are integrated with a hanging material, and after the inner tank side panels are assembled, the outer tank roof and the outer tank roof are assembled. The roof is lowered by a lifting device installed between the outer surfaces of the outer tank side panels to connect the inner tank roof and the inner tank side panels, and the outer tank roof and the outer tank side panels. This can be done easily, efficiently, and safely in a large space.
第１図乃至第３図は本発明の実施例を示す作業段階ごと
の断面図、第４図および第５図は従来例二側を示す断面
図である。
１・・・外槽側板、１０・・・内槽側板、２・・・屋根
構造体、３・・・外槽屋根、４・・・内槽屋根、５・・
・吊り材、７・・・スペーサ、１２・・・昇降装置とし
てのジヤツキ。
第 １ 図
第 ２ 図
第 ３ 図
第 ４ 図
第 ５ 図1 to 3 are sectional views showing the embodiment of the present invention at each work stage, and FIGS. 4 and 5 are sectional views showing the second side of the conventional example. 1... Outer tank side plate, 10... Inner tank side plate, 2... Roof structure, 3... Outer tank roof, 4... Inner tank roof, 5...
- Hanging material, 7... Spacer, 12... Jacket as a lifting device. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5
Claims (1)
槽屋根と、外槽側板の内側に設けられる内槽側板と、上
記外槽屋根の下方において内槽側板の上端に取付けられ
る内槽屋根とによって構成される円筒形二重殻貯槽にお
いて、上記外槽屋根と内槽屋根を連結材を介して一体に
昇降可能に連結して屋根構造体を構成し、外槽側板組立
後、この屋根構造体の外槽屋根を上記外槽側板の上端に
スペーサを介して支持させておき、一方、外槽側板の上
端部外面と外槽屋根の外面との間に、上記屋根構造体を
昇降させる昇降装置を設置し、内槽側板の組立後、上記
スペーサを取外し、上記昇降装置により屋根構造体を下
降させて、外槽屋根を外槽側板の上端に、内槽屋根を内
槽側板の上端にそれぞれ固定することを特徴とする円筒
形二重殻貯槽の屋根取付方法。1. An outer tank side plate, an outer tank roof attached to the upper end of the outer tank side plate, an inner tank side plate provided inside the outer tank side plate, and an inner tank side plate attached to the upper end of the inner tank side plate below the outer tank roof. In a cylindrical double-shell storage tank configured with a tank roof, the outer tank roof and the inner tank roof are connected via a connecting member so as to be able to rise and fall as one body to form a roof structure, and after assembling the outer tank side plates, The outer tank roof of this roof structure is supported by the upper end of the outer tank side plate via a spacer, and the roof structure is placed between the outer surface of the upper end of the outer tank side plate and the outer surface of the outer tank roof. A lifting device for raising and lowering is installed, and after assembling the inner tank side plate, the spacer is removed, and the roof structure is lowered by the lifting device, and the outer tank roof is attached to the upper end of the outer tank side plate, and the inner tank roof is attached to the inner tank side plate. A method for attaching the roof of a cylindrical double-shell storage tank, characterized in that each tank is fixed to the upper end of the tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11794987A JPS63284373A (en) | 1987-05-14 | 1987-05-14 | Method for mounting roof to cylindrical double shell storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11794987A JPS63284373A (en) | 1987-05-14 | 1987-05-14 | Method for mounting roof to cylindrical double shell storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63284373A true JPS63284373A (en) | 1988-11-21 |
Family
ID=14724221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11794987A Pending JPS63284373A (en) | 1987-05-14 | 1987-05-14 | Method for mounting roof to cylindrical double shell storage tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63284373A (en) |
-
1987
- 1987-05-14 JP JP11794987A patent/JPS63284373A/en active Pending
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