JP2000336969A - Side wall structure of lng storage tank and construction method therefor - Google Patents
Side wall structure of lng storage tank and construction method thereforInfo
- Publication number
- JP2000336969A JP2000336969A JP11229107A JP22910799A JP2000336969A JP 2000336969 A JP2000336969 A JP 2000336969A JP 11229107 A JP11229107 A JP 11229107A JP 22910799 A JP22910799 A JP 22910799A JP 2000336969 A JP2000336969 A JP 2000336969A
- Authority
- JP
- Japan
- Prior art keywords
- heat insulating
- insulating panel
- heat
- storage tank
- reinforcing
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
- E04H7/02—Containers for fluids or gases; Supports therefor
- E04H7/18—Containers for fluids or gases; Supports therefor mainly of concrete, e.g. reinforced concrete, or other stone-like material
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C3/00—Vessels not under pressure
- F17C3/02—Vessels not under pressure with provision for thermal insulation
- F17C3/04—Vessels not under pressure with provision for thermal insulation by insulating layers
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Building Environments (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ＬＮＧ（liquefie
d natural gas)貯蔵タンクのサイドウォール構造体及
びその製造方法に関し、特に、鉄筋コンクリート壁の施
工時に、ガラス繊維シート／断熱性芯材／ガラス繊維シ
ートから成るサンドイッチ構造の断熱パネルをインナ型
枠として用いることによって、工期を短縮し、製作コス
トを大幅に節減できるＬＮＧ貯蔵タンクのサイドウォー
ル構造体及びその施工方法に関する。TECHNICAL FIELD The present invention relates to an LNG (liquefie
d natural gas) With respect to a sidewall structure of a storage tank and a method of manufacturing the same, particularly, when a reinforced concrete wall is constructed, a heat insulating panel having a sandwich structure composed of a glass fiber sheet / a heat insulating core / glass fiber sheet is used as an inner form. Accordingly, the present invention relates to a sidewall structure of an LNG storage tank and a method for constructing the sidewall structure, which can shorten the construction period and greatly reduce the production cost.
【０００２】[0002]
【従来の技術】ＬＮＧは、大気圧下で沸騰点が−１６３
℃である超低温液体（cryogennic liquid）であって、
二重構造を有する垂直円筒形の大型タンクに貯蔵される
のが一般的である。また、ＬＮＧ貯蔵タンクは、その内
部タンクを構成するメンブレン（membrane）に低温脆性
に強い材質を用い、外部タンクを構成するサイドウォー
ルは、プレストレストコンクリート（prestressed conc
rete；PC）又は炭素鋼を使用して作り、その間には断熱
材を充填して、外部からの熱の侵入による気化ガス（bo
iloff gas）の発生を最小限に抑えるようになってい
る。2. Description of the Related Art LNG has a boiling point of -163 at atmospheric pressure.
A cryogennic liquid at ℃
It is generally stored in a large vertical cylindrical tank having a double structure. The LNG storage tank uses a material that is resistant to low-temperature brittleness for the membrane that forms the inner tank, and the sidewall that forms the outer tank is made of prestressed concrete.
rete (PC) or carbon steel, and in the meantime, heat-insulating material is filled, and vaporized gas (bo
The aim is to minimize the generation of iloff gas).
【０００３】このようなＬＮＧ貯蔵タンクは、大別して
３種類に分類できる。即ち、埋設型(Inground)、半埋設
型(Half-Inground)、地上型(Aboveground)の３種類であ
って、地形等の条件によりこれらの内から選択すること
になるが、経済的側面からは地上型が、安全性の面から
は埋設型がそれぞれ有利であり、現在では、地上型で施
工・製作することが多い。[0003] Such LNG storage tanks can be broadly classified into three types. In other words, there are three types: buried type (Inground), semi-buried type (Half-Inground), and ground type (Aboveground). The ground type and the buried type are advantageous from the viewpoint of safety, respectively. At present, the ground type is often constructed and manufactured.
【０００４】以下、従来の地上型ＬＮＧ貯蔵タンクの構
造及び施工方法を、図４、図５及び図６に基づいて説明
する。先ず、図４に示すように、地盤を固めるための地
業１００を行った後、ここに地震による振動や衝撃を防
ぐために鉄パイプを打ち込んで、基礎コンクリート部２
００を施工する。次いで、基礎コンクリート部２００の
上に、タンクの貯蔵能力を決定する円筒形のサイドウォ
ール３００を構築する。[0004] The structure and construction method of a conventional ground-type LNG storage tank will be described below with reference to FIGS. 4, 5 and 6. First, as shown in FIG. 4, after a ground operation 100 for solidifying the ground, an iron pipe is driven into the ground to prevent vibration and impact due to an earthquake.
Construct 00. Next, a cylindrical sidewall 300 for determining the storage capacity of the tank is constructed on the foundation concrete section 200.
【０００５】サイドウォール３００は、所定の高さ及び
厚さを有する鉄筋コンクリート部３０２の内面と底面と
に断熱パネル３０４を取り付け、サイドウォール３００
の内部で製作されたドーム型ルーフ５００を鉄筋コンク
リート部３０２の上に組み立てた後、断熱パネル３０４
の内側にメンブレン４００を取り付けて内部タンクの仕
上げ処理を施し、貯蔵タンク６００が完成する。なお、
超低温貯蔵タンク６００で使用されるメンブレン４００
は、温度及び荷重の変化に応じて自在に膨張及び収縮で
きるように設計・製作された特殊な板材であり、内部タ
ンクの側面及び底面に設けられて、超低温液体の漏洩を
防ぐ密封機能を１次的に担当し、熱荷重による疲労に耐
えながら、液圧力及び自重等によって生ずる荷重を吸収
減衰させて、断熱パネル３０４に伝える機能を有してい
る。[0005] The side wall 300 has a heat insulating panel 304 attached to the inner surface and the bottom surface of a reinforced concrete portion 302 having a predetermined height and thickness.
After assembling the dome-shaped roof 500 manufactured inside the reinforced concrete part 302, the heat insulating panel 304
A membrane 400 is attached to the inside of the container, and a finishing treatment of the internal tank is performed, whereby the storage tank 600 is completed. In addition,
Membrane 400 used in cryogenic storage tank 600
Is a special plate material designed and manufactured so that it can expand and contract freely according to changes in temperature and load. It is provided on the side and bottom of the internal tank and has a sealing function to prevent leakage of ultra-low temperature liquid. Next, it has a function of absorbing and attenuating the load generated by the liquid pressure, its own weight, and the like, and transmitting it to the heat insulating panel 304 while withstanding fatigue caused by a thermal load.
【０００６】また、サイドウォール３００の施工工程
は、図５に示すように、コンクリートが打設される部位
に鉄筋３０１を配筋すると共に、所定の幅で型枠７００
を形成し、その内側にコンクリートを打設して所定の厚
さ（約５５〜１００cm）で鉄筋コンクリート部３０２を
製作する工程と、鉄筋コンクリート部３０２の養生が終
了してから型枠７００を除去する工程と、図６に示すよ
うに、鉄筋コンクリート部３０２の内面に、液状コンパ
ウンドであるマスチック（Mastic）３０６を塗布して、
合板３０４ａとポリウレタンフォーム３０４ｂと合板３
０４ａとを積層して成る断熱パネル３０４を接着する工
程とから構成される。Further, as shown in FIG. 5, in the step of constructing the sidewall 300, a reinforcing bar 301 is arranged at a portion where concrete is to be cast, and a form 700 having a predetermined width is formed.
Forming a reinforced concrete part 302 at a predetermined thickness (about 55 to 100 cm) by casting concrete inside the reinforced concrete part 302, and removing the formwork 700 after curing of the reinforced concrete part 302 is completed. As shown in FIG. 6, a mastic (Mastic) 306, which is a liquid compound, is applied to the inner surface of the reinforced concrete portion 302,
Plywood 304a, polyurethane foam 304b and plywood 3
And bonding a heat insulating panel 304 formed by laminating the heat insulating panels 04a.
【０００７】前記従来のサイドウォール３００による
と、鉄筋コンクリート部３０２と断熱パネル３０４とを
同時に施工できないため、鉄筋モンクリート部３０２を
施工した後、その内面に断熱パネル３０４をマスチック
３０６で取り付ける作業が必要となって、施工時間や人
件費が高くつく。また、対向して配置された１対の堰板
の間にコンクリートを打設しているため、型枠の組立及
び除去に要する手間や時間が多大なものとなり、施工コ
ストを押し上げる要因となる。例えば、型枠７００の１
枚の堰板が１．２ｍ×２．４ｍのサイズであって、約１
３万ｍ3の貯蔵タンク６００を施工する場合には、約３,
６００個程度の堰板が必要となる。According to the conventional side wall 300, since the reinforced concrete portion 302 and the heat insulating panel 304 cannot be simultaneously formed, it is necessary to attach the heat insulating panel 304 to the inner surface thereof with the mastic 306 after the reinforced moncrete portion 302 is formed. As a result, construction time and labor costs are high. Moreover, since concrete is cast between a pair of dam plates arranged opposite to each other, the labor and time required for assembling and removing the formwork are enormous, which increases the construction cost. For example, one of the molds 700
The weir plates are 1.2m x 2.4m in size and about 1 m
When constructing a storage tank 600 of 30,000 m 3 , about 30,
About 600 weir plates are required.
【０００８】さらに、従来用いられていた断熱パネル３
０４は、ポリウレタンフォーム３０４ｂの両面にそれぞ
れ合板３０４ａ，３０４ａを取り付けて成るサンドイッ
チパネルであるため、これら合板３０４ａの重量によっ
て垂れ現象や剥離現象が発生することがあり、しかも、
このような断熱パネル３０４は湿気に弱いので、十分な
耐食性が得られずに貯蔵タンク６００の安全性を低下さ
せる虞がある。Further, the conventionally used heat insulating panel 3
04 is a sandwich panel in which plywood 304a, 304a are attached to both surfaces of a polyurethane foam 304b, respectively, so that the weight of the plywood 304a may cause a dripping phenomenon or a peeling phenomenon.
Since such a heat insulating panel 304 is vulnerable to moisture, sufficient corrosion resistance may not be obtained and the safety of the storage tank 600 may be reduced.
【０００９】[0009]
【発明が解決しようとする課題】この発明は前記のよう
な従来技術の問題点を解決するために創案されたもので
あって、断熱性芯材の両面にガラス繊維シートを積層し
て成る断熱パネルを型枠としても利用することによっ
て、サイドウォール構造体の施工時に、鉄筋コンクリー
ト壁の施工と断熱パネルの取付けとが同時になされ、こ
れにより、施工時間を大幅に短縮させて施工コストを引
き下げ、しかも、断熱パネルを構成するガラス繊維シー
トを補強織物でステッチング（stitching)して連結する
ことにより、３次元の補強構造を有するパネルを構成
し、これらガラス繊維シートの間に芯材であるポリウレ
タンフォームを充填させることによって断熱パネルの剛
性を高め、結果的に、サイドウォール構造体の強度を向
上させて安全性を高めることができるＬＮＧ貯蔵タンク
のサイドウォール構造体及びその施工方法を提供するこ
とにその目的がある。SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the prior art, and comprises a heat insulating core formed by laminating glass fiber sheets on both sides of a heat insulating core. By using the panel as a formwork, the construction of the reinforced concrete wall and the installation of the heat insulation panel are performed at the same time during the construction of the sidewall structure, thereby greatly reducing the construction time and reducing the construction cost, and By connecting the glass fiber sheets constituting the heat insulating panel by stitching with a reinforcing fabric and connecting them, a panel having a three-dimensional reinforcing structure is formed, and a polyurethane foam as a core material is interposed between the glass fiber sheets. Filling increases the rigidity of the thermal insulation panel and consequently enhances the strength of the sidewall structure and enhances safety. It is an object of the present invention to provide a sidewall structure of an LNG storage tank and a method for constructing the sidewall structure.
【００１０】[0010]
【課題を解決するための手段】前記の目的を達成するた
めに、本発明のＬＮＧ貯蔵タンクのサイドウォール構造
体は、コンクリートが打設される部位に鉄筋を配筋し、
断熱性芯材の両面にガラス繊維シートを積層して成る断
熱パネルの外面に鉄筋メッシュを取り付けると共に、該
鉄筋メッシュにこれと直交して外方に延びる複数の連結
ロッドを結合し、前記鉄筋を挟んで内側に前記断熱パネ
ルを、外側にアウタ型枠を、互いに所定間隔を開けてそ
れぞれ配置し、前記アウタ型枠と断熱パネルとを前記連
結ロッドを介して連結し、前記アウタ型枠と断熱パネル
との間にコンクリートを打設して鉄筋コンクリート壁を
形成すると共に、該鉄筋コンクリート壁と断熱パネルと
を前記連結ロッド及び鉄筋メッシュを介して一体化し、
前記アウタ型枠を除去して構成される。In order to achieve the above-mentioned object, a sidewall structure of an LNG storage tank according to the present invention has a reinforcing bar arranged at a portion where concrete is cast.
A reinforcing mesh is attached to the outer surface of a heat insulating panel formed by laminating a glass fiber sheet on both sides of a heat insulating core material, and a plurality of connecting rods extending outward and perpendicular to the reinforcing mesh are connected to the reinforcing mesh, and The heat insulation panel is disposed on the inside and the outer formwork is disposed on the outside at predetermined intervals, and the outer formwork and the heat insulation panel are connected via the connection rod, and the outer formwork and the heat insulation panel are interposed. While laying concrete between the panels to form a reinforced concrete wall, the reinforced concrete wall and the heat insulating panel are integrated via the connecting rod and the reinforced mesh,
It is configured by removing the outer formwork.
【００１１】断熱パネルは、両面のガラス繊維シート
を、その間に架設される補強織物でステッチングして連
結すると共に、これらガラス繊維シートの間にポリウレ
タンフォームより成る断熱性芯材を充填したものとする
ことができる。鉄筋メッシュは、接着樹脂を含浸させた
ガラス繊維シートにより、断熱パネルの外面に接着して
も良い。連結ロッドに、鉄筋コンクリート壁の外面と断
熱パネルとの距離、即ち鉄筋コンクリート壁の厚さを決
定するスペーサを設けることが可能である。The heat insulating panel is formed by connecting glass fiber sheets on both sides by stitching them with a reinforcing fabric interposed therebetween, and filling a heat insulating core made of polyurethane foam between the glass fiber sheets. can do. The reinforcing mesh may be bonded to the outer surface of the heat insulating panel by a glass fiber sheet impregnated with an adhesive resin. It is possible for the connecting rod to be provided with a spacer which determines the distance between the outer surface of the reinforced concrete wall and the insulation panel, ie the thickness of the reinforced concrete wall.
【００１２】また、本発明のＬＮＧ貯蔵タンクのサイド
ウォール構造体の施工方法は、コンクリートが打設され
る部位に鉄筋を配筋するステップと、断熱性芯材の両面
にガラス繊維シートを積層して成る断熱パネルの外面に
鉄筋メッシュを取り付けると共に、該鉄筋メッシュにこ
れと直交して外方に延びる複数の連結ロッドを結合する
ステップと、前記鉄筋を挟んで内側に前記断熱パネル
を、外側に前記アウタ型枠を、互いに所定間隔を開けて
それぞれ配置し、前記アウタ型枠と断熱パネルとを前記
連結ロッドを介して連結するステップと、前記アウタ型
枠と断熱パネルとの間にコンクリートを打設して鉄筋コ
ンクリート壁を形成するステップと、前記鉄筋コンクリ
ート壁を養生してから前記アウタ型枠を除去するステッ
プとから成る。Further, in the method for constructing a sidewall structure of an LNG storage tank according to the present invention, a step of arranging a reinforcing bar at a portion where concrete is cast is provided, and a glass fiber sheet is laminated on both sides of a heat insulating core material. Attaching a reinforcing mesh to the outer surface of the insulating panel, and connecting a plurality of connecting rods extending outward to the reinforcing mesh at right angles to the reinforcing mesh. Arranging the outer formwork at a predetermined interval from each other, connecting the outer formwork and the heat insulating panel via the connecting rod, and placing concrete between the outer formwork and the heat insulating panel. And forming the reinforced concrete wall, and curing the reinforced concrete wall and then removing the outer formwork.
【００１３】[0013]
【発明の実施の形態】以下、本発明の実施形態を図面に
基づいて詳細に説明する。図２は、本発明のサイドウォ
ール構造体１０を採用したＬＮＧ貯蔵タンク６００を示
し、図１はサイドウォール構造体１０の断面図、図３は
サイドウォール構造体１０の斜視図である。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 2 shows an LNG storage tank 600 employing the sidewall structure 10 of the present invention. FIG. 1 is a cross-sectional view of the sidewall structure 10, and FIG. 3 is a perspective view of the sidewall structure 10.
【００１４】本発明のＬＮＧ貯蔵タンク６００のサイド
ウォール構造体１０は略円筒状をなし、図１及び図３に
示すように、断熱性芯材１４ｂの両面にそれぞれガラス
繊維シート１４ａ，１４ａを積層して成る断熱パネル１
４の外面に、鉄筋メッシュ１６を取り付けると共に、鉄
筋メッシュ１６にこれと直交して外方に延びる複数の連
結ロッド１８を結合したものを、鉄筋コンクリート壁２
２の内面に配置し、鉄筋コンクリート壁２２と断熱パネ
ル１４とを、鉄筋コンクリート壁２２に埋設された連結
ロッド１８及び鉄筋メッシュ１６を介して一体化して構
成される。The sidewall structure 10 of the LNG storage tank 600 of the present invention has a substantially cylindrical shape, and as shown in FIGS. 1 and 3, glass fiber sheets 14a, 14a are laminated on both surfaces of a heat insulating core material 14b, respectively. Insulation panel 1
4 is connected to a reinforcing mesh 16 and a plurality of connecting rods 18 extending outward and perpendicular to the reinforcing mesh 16 are connected to the reinforced concrete wall 2.
2, the reinforced concrete wall 22 and the heat insulating panel 14 are integrated via a connecting rod 18 and a reinforced mesh 16 embedded in the reinforced concrete wall 22.
【００１５】断熱パネル１４は、互いに間隔をおいて配
置された１対のガラス繊維シート１４ａ，１４ａを、そ
の間にジグザグ状に架設された補強織物２４でステッチ
ングして連結し、両側のガラス繊維シート１４ａ，１４
ａの間にポリウレタンフォームより成る断熱性芯材１４
ｂを充填して形成される。補強織物２４は、ガラス繊維
織物、炭素繊維織物またはその他の合成繊維織物の内か
ら選択して使用できる。このような断熱パネル１４は、
補強織物２４によってガラス繊維シート１４ａ，１４ａ
と発泡体である断熱性芯材１４ｂとが有機的に結合され
たサンドイッチ構造をなすため、断熱性を有するばかり
か、剪断応力に対する耐久性を発揮できる。The heat insulating panel 14 is formed by connecting a pair of glass fiber sheets 14a, 14a arranged at a distance from each other by stitching them with a reinforcing fabric 24 laid in a zigzag manner therebetween. Sheets 14a, 14
a heat-insulating core 14 made of polyurethane foam
b. The reinforcing fabric 24 can be selected from glass fiber fabric, carbon fiber fabric or other synthetic fiber fabric. Such an insulation panel 14
Glass fiber sheets 14a, 14a
And a heat insulating core material 14b, which is a foam, are organically bonded to form a sandwich structure, so that they not only have heat insulating properties but also exhibit durability against shear stress.
【００１６】鉄筋メッシュ１６は、接着樹脂を含浸させ
たガラス繊維シート２６を介して、断熱パネル１４を構
成する鉄筋コンクリート壁２２寄りのガラス繊維シート
１４ａの外面に接着されている。The reinforcing mesh 16 is bonded to the outer surface of the glass fiber sheet 14a near the reinforced concrete wall 22 constituting the heat insulating panel 14 via a glass fiber sheet 26 impregnated with an adhesive resin.
【００１７】連結ロッド１８は、鉄筋コンクリート壁２
２の厚さよりもやや長く、鉄筋メッシュ１６を含む面に
対して直交するよう、すなわちサイドウォール構造体１
０の径方向に沿うよう配置され、その内側端部が鉄筋メ
ッシュ１６に結合される。また、連結ロッド１８は鉄筋
コンクリート壁２２の外側にまで達し、その外端部は雄
ネジ部となっている。さらに、連結ロッド１８の外周に
は、後述するアウタ型枠２０と断熱パネル１４との距離
を規制して、鉄筋コンクリート壁２２の厚さを決定する
ために、鉄筋コンクリート壁２２の厚さに相当する長さ
を有するパイプ状のスペーサ３０が嵌合されている。The connecting rod 18 is connected to the reinforced concrete wall 2.
2 is slightly longer than the thickness of the sidewall structure 1, that is, orthogonal to the plane including the reinforcing mesh 16.
0 is arranged along the radial direction, and its inner end is connected to the reinforcing mesh 16. Further, the connecting rod 18 reaches the outside of the reinforced concrete wall 22, and an outer end portion thereof is a male screw portion. Furthermore, a length corresponding to the thickness of the reinforced concrete wall 22 is provided on the outer periphery of the connecting rod 18 in order to determine the thickness of the reinforced concrete wall 22 by regulating the distance between the outer formwork 20 and the heat insulating panel 14 described later. A pipe-shaped spacer 30 having a length is fitted.
【００１８】上記サイドウォール構造体１０の施工方法
は次のようなものである。コンクリートが打設される部
位に鉄筋１２を配筋する。また、断熱性芯材１４ｂの両
面にそれぞれガラス繊維シート１４ａ，１４ａを積層し
て成る断熱パネル１４の外面に、予め、ガラス繊維シー
ト２６を介して鉄筋メッシュ１６を取り付けると共に、
鉄筋メッシュ１６に、これと直交して外方に延びる複数
の連結ロッド１８を結合しておく。The method of constructing the sidewall structure 10 is as follows. Reinforcing bar 12 is arranged at the site where concrete is cast. In addition, the reinforcing mesh 16 is previously attached to the outer surface of the heat insulating panel 14 formed by laminating the glass fiber sheets 14a, 14a on both surfaces of the heat insulating core material 14b via the glass fiber sheet 26,
A plurality of connecting rods 18 extending outward and perpendicular to the reinforcing mesh 16 are connected to the reinforcing mesh 16.
【００１９】そして、鉄筋１２を挟んで内側に断熱パネ
ル１４を、外側にアウタ型枠２０を、互いに所定間隔を
開けてそれぞれ配置し、アウタ型枠２０の外面側におい
て、連結ロッド１８の外端部にナット２８を螺合して、
アウタ型枠２０と断熱パネル１４とを連結ロッド１８を
介して連結する。なお、この時、アウタ型枠２０と断熱
パネル１４とは、スペーサ３０に規制されて、鉄筋コン
クリート壁２２の設計厚に相当する距離をおいて配置さ
れることになる。The heat insulating panel 14 is disposed inside the reinforcing bar 12 and the outer formwork 20 is disposed outside the outer formwork 20 at predetermined intervals, and the outer end of the connecting rod 18 is provided on the outer surface side of the outer formwork 20. Screw the nut 28 into the part
The outer formwork 20 and the heat insulating panel 14 are connected via the connecting rod 18. At this time, the outer formwork 20 and the heat insulation panel 14 are arranged at a distance corresponding to the design thickness of the reinforced concrete wall 22 under the control of the spacer 30.
【００２０】次いで、アウタ型枠２０と断熱パネル１４
との間にコンクリートを打設して鉄筋コンクリート壁２
４を形成すると共に、鉄筋コンクリート壁２２と断熱パ
ネル１４とを連結ロッド１８及び鉄筋メッシュ１６を介
して一体化させる。さらに、鉄筋コンクリート壁２２を
養生した後、連結ロッド１８からナット２８を外してア
ウタ型枠２０を除去する。最後に、図２に示す如く、従
来の貯蔵タンクと同様に、サイドウォール構造体１０の
内周面及び底面にメンブレン４００を装着すると共に、
上面にドーム型ルーフ５００を取り付けてＬＮＧ貯蔵タ
ンク６００を形成する。Next, the outer mold 20 and the heat insulating panel 14
Between concrete and concrete wall 2
4 and the reinforced concrete wall 22 and the heat insulating panel 14 are integrated via the connecting rod 18 and the reinforced mesh 16. After the reinforced concrete wall 22 is cured, the nut 28 is removed from the connecting rod 18 and the outer form 20 is removed. Lastly, as shown in FIG. 2, the membrane 400 is mounted on the inner peripheral surface and the bottom surface of the sidewall structure 10, as in the conventional storage tank.
The LNG storage tank 600 is formed by attaching the dome-shaped roof 500 to the upper surface.
【００２１】このように施工されたＬＮＧ貯蔵タンク６
００のサイドウォール構造体１０は、鉄筋コンクリート
壁２２の施工と同時に、断熱パネル１４が取り付けられ
るので、断熱パネル１４の接着作業が不要となって、施
工が簡単になる。特に、断熱パネル１４は、通常１枚当
り２．７×１２．０ｍのサイズであって、約１３万m3の
貯蔵タンク６００の場合には、約２６０枚もの断熱パネ
ル１４が必要であるため、その接着作業が不要となれば
大幅に工期を短縮させることができる。The LNG storage tank 6 constructed as described above
Since the heat insulation panel 14 is attached to the side wall structure 10 at the same time as the construction of the reinforced concrete wall 22, the work of bonding the heat insulation panel 14 is unnecessary, and the construction is simplified. In particular, the size of the heat insulating panel 14 is usually 2.7 × 12.0 m per sheet. In the case of the storage tank 600 of about 130,000 m 3 , about 260 heat insulating panels 14 are required. If the bonding work becomes unnecessary, the construction period can be greatly reduced.
【００２２】[0022]
【発明の効果】本発明によれば、断熱パネルが、コンク
リートの打設と同時に、連結ロッド及び鉄筋メッシュを
介して、鉄筋コンクリート壁に取り付けられるので、鉄
筋コンクリート壁に断熱パネルを接着する作業が不要と
なるばかりか、断熱パネルがインナ型枠を兼ねるため、
型枠の組立及び除去作業に要する時間や手間が半減さ
れ、この結果、工期が大幅に短縮されて施工コストを削
減することができる。また、断熱パネルとして、断熱性
芯材の両面にガラス繊維シートを積層して成るサンドイ
ッチパネルを用いたので、両面に合板を貼着したものに
比べて軽量であり、鉄筋コンクリート壁に埋め込まれた
連結ロッド及び鉄筋メッシュによって、鉄筋コンクリー
ト壁に強固に取り付けたことと相俟って、断熱パネルの
垂れや剥離を防止することが可能である。According to the present invention, since the heat insulating panel is attached to the reinforced concrete wall via the connecting rod and the reinforcing mesh simultaneously with the placement of the concrete, it is not necessary to attach the heat insulating panel to the reinforced concrete wall. Not only that, but because the insulation panel also serves as the inner formwork,
The time and labor required for assembling and removing the formwork are halved, and as a result, the construction period is greatly reduced, and the construction cost can be reduced. In addition, as the heat insulation panel, a sandwich panel made by laminating glass fiber sheets on both sides of a heat insulating core material is used, so it is lighter than one with plywood attached on both sides, and the connection embedded in the reinforced concrete wall With the rod and the reinforcing mesh, it is possible to prevent the heat insulating panel from drooping and peeling, in combination with the fact that it is firmly attached to the reinforced concrete wall.
【００２３】また、両面のガラス繊維シートを補強織物
でステッチングして連結すると共に、これらガラス繊維
シートの間にポリウレタンフォームより成る断熱性芯材
を充填して断熱パネルを構成すれば、断熱パネルの強度
が高まるため、サイドウォール構造体の安全性を向上さ
せることができる。[0023] In addition, if the glass fiber sheets on both sides are connected by stitching with a reinforcing fabric and a heat insulating core material made of polyurethane foam is filled between the glass fiber sheets, the heat insulating panel is formed. Therefore, the safety of the sidewall structure can be improved.
【図１】本発明の実施形態を示すＬＮＧ貯蔵タンクのサ
イドウォール構造体の断面図FIG. 1 is a cross-sectional view of a sidewall structure of an LNG storage tank showing an embodiment of the present invention.
【図２】本発明の実施形態に係るＬＮＧ貯蔵タンクの断
面図FIG. 2 is a cross-sectional view of the LNG storage tank according to the embodiment of the present invention.
【図３】サイドウォール構造体の斜視図FIG. 3 is a perspective view of a sidewall structure.
【図４】従来のＬＮＧ貯蔵タンクの断面図FIG. 4 is a cross-sectional view of a conventional LNG storage tank.
【図５】従来のサイドウォール構造体の施工工程の第１
段階を示す断面図FIG. 5 shows a first example of a process of applying a conventional sidewall structure.
Sectional view showing stages
【図６】従来のサイドウォール構造体の施工工程の第２
段階を示す断面図FIG. 6 shows a second example of the conventional sidewall structure construction process.
Sectional view showing stages
１０ サイドウォール構造体 １２ 鉄筋 １４ 断熱パネル １４ａ 断熱性芯材（ポリウレタンフォーム） １４ｂ ガラス繊維シート １６ 鉄筋メッシュ １８ 連結ロッド ２０ アウタ型枠 ２２ 鉄筋コンクリート壁 ２４ 補強織物 ２６ ガラス繊維シート ２８ ナット ３０ スペーサ DESCRIPTION OF SYMBOLS 10 Side wall structure 12 Reinforcement 14 Heat insulation panel 14a Heat insulation core material (polyurethane foam) 14b Glass fiber sheet 16 Reinforcement mesh 18 Connecting rod 20 Outer formwork 22 Reinforced concrete wall 24 Reinforcement fabric 26 Glass fiber sheet 28 Nut 30 Spacer
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2E001 DD01 EA01 FA26 FA30 GA07 GA24 GA27 GA32 HA04 HA31 HA33 HB02 HD03 HD11 LA15 3E073 AA01 AB02 BA02 BA11 BA32 CA01 CB02 CC02 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E001 DD01 EA01 FA26 FA30 GA07 GA24 GA27 GA32 HA04 HA31 HA33 HB02 HD03 HD11 LA15 3E073 AA01 AB02 BA02 BA11 BA32 CA01 CB02 CC02
Claims (5)
配筋し、断熱性芯材の両面にガラス繊維シートを積層し
て成る断熱パネルの外面に鉄筋メッシュを取り付けると
共に、該鉄筋メッシュにこれと直交して外方に延びる複
数の連結ロッドを結合し、前記鉄筋を挟んで内側に前記
断熱パネルを、外側にアウタ型枠を、互いに所定間隔を
開けてそれぞれ配置し、前記アウタ型枠と断熱パネルと
を前記連結ロッドを介して連結し、前記アウタ型枠と断
熱パネルとの間にコンクリートを打設して鉄筋コンクリ
ート壁を形成すると共に、該鉄筋コンクリート壁と断熱
パネルとを前記連結ロッド及び鉄筋メッシュを介して一
体化し、前記アウタ型枠を除去したことを特徴とするＬ
ＮＧ貯蔵タンクのサイドウォール構造体。1. A reinforcing steel mesh is attached to an outer surface of an insulating panel formed by laminating glass fiber sheets on both sides of a heat insulating core material, and reinforcing steel is arranged on a portion where concrete is cast. A plurality of connecting rods extending outwardly perpendicular to each other are connected, and the heat insulation panel is disposed on the inner side with the rebar interposed therebetween, and the outer formwork is disposed at a predetermined interval from each other, and the outer formwork and A heat insulating panel is connected via the connecting rod, concrete is cast between the outer formwork and the heat insulating panel to form a reinforced concrete wall, and the reinforced concrete wall and the heat insulating panel are connected with the connecting rod and the reinforcing rod. L integrated with a mesh and removing the outer formwork
NG storage tank sidewall structure.
ートを、その間に架設される補強織物でステッチングし
て連結すると共に、これらガラス繊維シートの間にポリ
ウレタンフォームより成る断熱性芯材を充填したもので
ある請求項１に記載のＬＮＧ貯蔵タンクのサイドウォー
ル構造体。2. The heat-insulating panel connects the glass fiber sheets on both sides by stitching with a reinforcing fabric interposed therebetween, and fills a heat-insulating core material made of polyurethane foam between the glass fiber sheets. The sidewall structure of an LNG storage tank according to claim 1, wherein:
せたガラス繊維シートにより、前記断熱パネルの外面に
接着された請求項１又は２に記載のＬＮＧ貯蔵タンクの
サイドウォール構造体。3. The sidewall structure of an LNG storage tank according to claim 1, wherein the reinforcing mesh is bonded to an outer surface of the heat insulating panel by a glass fiber sheet impregnated with an adhesive resin.
記断熱パネルとの距離を決定するスペーサを設けた請求
項１乃至３のいずれかに記載のＬＮＧ貯蔵タンクのサイ
ドウォール構造体。4. The sidewall structure of an LNG storage tank according to claim 1, wherein a spacer that determines a distance between the outer mold and the heat insulating panel is provided on the connecting rod.
配筋するステップと、断熱性芯材の両面にガラス繊維シ
ートを積層して成る断熱パネルの外面に鉄筋メッシュを
取り付けると共に、該鉄筋メッシュにこれと直交して外
方に延びる複数の連結ロッドを結合するステップと、前
記鉄筋を挟んで内側に前記断熱パネルを、外側に前記ア
ウタ型枠を、互いに所定間隔を開けてそれぞれ配置し、
前記アウタ型枠と断熱パネルとを前記連結ロッドを介し
て連結するステップと、前記アウタ型枠と断熱パネルと
の間にコンクリートを打設して鉄筋コンクリート壁を形
成するステップと、前記鉄筋コンクリート壁を養生して
から前記アウタ型枠を除去するステップとから成ること
を特徴とするＬＮＧ貯蔵タンクのサイドウォール構造体
の施工方法。5. A step of arranging a reinforcing bar at a portion where concrete is cast, attaching a reinforcing mesh to an outer surface of a heat insulating panel formed by laminating glass fiber sheets on both sides of a heat insulating core, and reinforcing the reinforcing bar mesh. Connecting a plurality of connecting rods extending outwardly perpendicular to this, and the heat insulating panel on the inside with the rebar sandwiched, and the outer formwork on the outside, arranged at a predetermined interval from each other,
Connecting the outer formwork and the heat insulation panel via the connecting rod, casting concrete between the outer formwork and the heat insulation panel to form a reinforced concrete wall, and curing the reinforced concrete wall Removing the outer formwork afterwards. A method for constructing a sidewall structure of an LNG storage tank, comprising:
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-1999-0018907A KR100375501B1 (en) | 1999-05-25 | 1999-05-25 | liquefied natural gas lang storage tank side wall structure and method |
| KR99-18907 | 1999-05-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000336969A true JP2000336969A (en) | 2000-12-05 |
| JP3428515B2 JP3428515B2 (en) | 2003-07-22 |
Family
ID=19587691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22910799A Expired - Lifetime JP3428515B2 (en) | 1999-05-25 | 1999-08-13 | LNG storage tank side wall structure and construction method thereof |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3428515B2 (en) |
| KR (1) | KR100375501B1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002371795A (en) * | 2001-06-18 | 2002-12-26 | Civil Renewale Kk | Structure and method for repairing body structure |
| US7837055B2 (en) | 2004-05-20 | 2010-11-23 | Exxonmobil Upstream Research Company | LNG containment system and method of assembling LNG containment system |
| CN103321421A (en) * | 2013-06-28 | 2013-09-25 | 河北省第二建筑工程公司 | Construction method for one-time formation of concrete pool wall |
| US8627636B2 (en) | 2009-11-05 | 2014-01-14 | Korea Gas Corporation | Method of constructing liquefied gas storage tank on land |
| US8656673B2 (en) | 2009-11-05 | 2014-02-25 | Korea Gas Corporation | Wall structure for building a liquefied gas storage tank |
| CN111764531A (en) * | 2020-07-01 | 2020-10-13 | 建研科技股份有限公司 | Prefabricated sandwich heat preservation wall body drawknot spare, prefabricated sandwich heat preservation wall body and building |
| CN111851777A (en) * | 2020-07-24 | 2020-10-30 | 江苏凯翔建设集团有限公司 | Reinforced structure of reinforced concrete wall and reinforcing method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101577743B1 (en) * | 2014-01-06 | 2015-12-16 | 삼성물산 주식회사 | Lng storage tank and construction method for lng storage tank |
| BE1028916B1 (en) * | 2020-12-18 | 2022-07-19 | Bio Dynamics Nv | INSULATED CONCRETE TANK AND PROCEDURE FOR INSULATING A CONCRETE TANK |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5354829A (en) * | 1976-10-27 | 1978-05-18 | Hiromi Arai | Clamper for holding frame spacing |
| JPS58191843A (en) * | 1982-05-07 | 1983-11-09 | 遠藤 尚三 | Construction of wall |
-
1999
- 1999-05-25 KR KR10-1999-0018907A patent/KR100375501B1/en not_active IP Right Cessation
- 1999-08-13 JP JP22910799A patent/JP3428515B2/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002371795A (en) * | 2001-06-18 | 2002-12-26 | Civil Renewale Kk | Structure and method for repairing body structure |
| US7837055B2 (en) | 2004-05-20 | 2010-11-23 | Exxonmobil Upstream Research Company | LNG containment system and method of assembling LNG containment system |
| US8387334B2 (en) | 2004-05-20 | 2013-03-05 | Exxonmobil Upstream Research Company | LNG containment system and method of assembling LNG containment system |
| US8627636B2 (en) | 2009-11-05 | 2014-01-14 | Korea Gas Corporation | Method of constructing liquefied gas storage tank on land |
| US8656673B2 (en) | 2009-11-05 | 2014-02-25 | Korea Gas Corporation | Wall structure for building a liquefied gas storage tank |
| CN103321421A (en) * | 2013-06-28 | 2013-09-25 | 河北省第二建筑工程公司 | Construction method for one-time formation of concrete pool wall |
| CN103321421B (en) * | 2013-06-28 | 2016-01-13 | 河北省第二建筑工程有限公司 | The one-time formed construction method of a kind of concrete water pool wall |
| CN111764531A (en) * | 2020-07-01 | 2020-10-13 | 建研科技股份有限公司 | Prefabricated sandwich heat preservation wall body drawknot spare, prefabricated sandwich heat preservation wall body and building |
| CN111851777A (en) * | 2020-07-24 | 2020-10-30 | 江苏凯翔建设集团有限公司 | Reinforced structure of reinforced concrete wall and reinforcing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20000074754A (en) | 2000-12-15 |
| JP3428515B2 (en) | 2003-07-22 |
| KR100375501B1 (en) | 2003-03-10 |
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