JP3428515B2 - LNG storage tank side wall structure and construction method thereof - Google Patents
LNG storage tank side wall structure and construction method thereofInfo
- Publication number
- JP3428515B2 JP3428515B2 JP22910799A JP22910799A JP3428515B2 JP 3428515 B2 JP3428515 B2 JP 3428515B2 JP 22910799 A JP22910799 A JP 22910799A JP 22910799 A JP22910799 A JP 22910799A JP 3428515 B2 JP3428515 B2 JP 3428515B2
- Authority
- JP
- Japan
- Prior art keywords
- storage tank
- reinforced concrete
- connecting rod
- mesh
- panel
- 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.)
- Expired - Lifetime
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)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Building Environments (AREA)
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 LNG (liquefie
d natural gas) Regarding a sidewall structure of a storage tank and a manufacturing method thereof, in particular, when constructing a reinforced concrete wall, a heat insulating panel having a sandwich structure composed of glass fiber sheet / heat insulating core material / glass fiber sheet is used as an inner formwork. Accordingly, the present invention relates to a sidewall structure of an LNG storage tank, which can shorten the construction period and significantly reduce the manufacturing cost, and a construction method thereof.
【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 cryogenic liquid that is ℃,
It is generally stored in a large vertical cylindrical tank having a double structure. In addition, the LNG storage tank uses a material that is resistant to low temperature brittleness for the membrane that forms the internal tank, and the sidewall that forms the external tank is made of prestressed concrete.
rete (PC) or carbon steel, and a space between them is filled with a heat insulating material, and vaporized gas (bo
It is designed 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。Such LNG storage tanks can be roughly classified into three types. In other words, there are three types of buried type (Inground), semi-buried type (Half-Inground), and aboveground type (Aboveground), and it will be selected from these depending on the conditions such as topography, but from the economical aspect The above-ground type is advantageous from the viewpoint of safety, and the buried type is advantageous. Currently, the above-mentioned type is often used for construction and production.
【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。The structure and construction method of a conventional aboveground LNG storage tank will be described below with reference to FIGS. 4, 5 and 6. First, as shown in FIG. 4, after performing the earthwork 100 to harden the ground, an iron pipe is driven in here to prevent vibration and shock due to an earthquake, and the foundation concrete part 2
Build 00. Then, a cylindrical sidewall 300 that determines the storage capacity of the tank is built on the foundation concrete portion 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。The side wall 300 has a heat insulating panel 304 attached to the inner surface and the bottom surface of the reinforced concrete portion 302 having a predetermined height and thickness.
After assembling the dome-shaped roof 500 manufactured inside of the above on the reinforced concrete part 302, the heat insulation panel 304
The membrane 400 is attached to the inside of the tank to finish the internal tank, and the storage tank 600 is completed. In addition,
Membrane 400 used in ultra-low temperature 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 surfaces of the internal tank and has a sealing function to prevent leakage of ultra-low temperature liquid. It is in charge of the next step, and has a function of absorbing and attenuating the load generated by the liquid pressure and its own weight and transmitting it to the heat insulation panel 304 while enduring the fatigue due to the heat 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。In the construction process of the sidewall 300, as shown in FIG. 5, the reinforcing bars 301 are laid out in the portion where concrete is placed, and the form 700 having a predetermined width is used.
To form a reinforced concrete part 302 with a predetermined thickness (about 55 to 100 cm) by pouring concrete inside thereof, and a step of removing the mold 700 after curing of the reinforced concrete part 302 is completed. Then, as shown in FIG. 6, Mastic 306 which is a liquid compound is applied to the inner surface of the reinforced concrete portion 302,
Plywood 304a, polyurethane foam 304b, plywood 3
And a step of adhering a heat insulating panel 304 formed by laminating the insulating layer 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 sidewall 300, since the reinforced concrete portion 302 and the heat insulating panel 304 cannot be installed at the same time, it is necessary to attach the heat insulating panel 304 to the inner surface of the reinforced concrete part 302 with the mastic 306 after the reinforced moncrete portion 302 is installed. Therefore, construction time and labor costs are high. In addition, since concrete is placed between a pair of barrier plates arranged facing each other, the labor and time required for assembling and removing the formwork become great, which is a factor to increase the construction cost. For example, 1 of form 700
The size of the weir board is 1.2m x 2.4m, and it is about 1
When constructing a storage tank 600 of 30,000 m 3 , approximately 3,
About 600 dam 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 heat insulation panel 3 which has been used conventionally
Since 04 is a sandwich panel in which plywood 304a and 304a are attached to both surfaces of polyurethane foam 304b, sagging and peeling phenomena may occur due to the weight of these plywood 304a.
Since the heat insulating panel 304 is vulnerable to moisture, there is a possibility that sufficient corrosion resistance cannot be obtained and the safety of the storage tank 600 is 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 was devised to solve the problems of the prior art as described above, and is a heat insulation formed by laminating glass fiber sheets on both sides of a heat insulating core material. By using the panel also as a formwork, the construction of the reinforced concrete wall and the installation of the heat insulation panel can be done at the same time when constructing the sidewall structure, thereby significantly reducing the construction time and reducing the construction cost, and A panel having a three-dimensional reinforcing structure is formed by stitching and connecting glass fiber sheets constituting a heat insulating panel with a reinforcing fabric, and a polyurethane foam which is a core material between the glass fiber sheets is formed. To increase the rigidity of the heat insulation panel and consequently the strength of the sidewall structure to improve safety. It is an object of the present invention to provide a sidewall structure of an LNG storage tank capable of achieving the above and a construction method thereof.
【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、
所定の間隔をおいて配置したガラス繊維シートを、その
間に架設された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形成
し、前記断熱パネルの一方のガラス繊維シートの外面に
鉄筋メッシュを取り付けると共に、該鉄筋メッシュに複
数の連結ロッドの一端を結合し、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、前記アウタ型枠に前記連
結ロッドの他端を連結し、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によって一体化し、
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, the sidewall structure of the LNG storage tank of the present invention has reinforcing bars arranged at the site where concrete is placed,
When glass fiber sheets arranged with a predetermined interval are stitched and connected with a reinforcing fabric laid between them,
Together , the polyurethane foam is placed between these glass fiber sheets.
The insulating panel is formed by filling a thermally insulating core material consisting of over arm, it is attached rebar mesh on one outer surface of the glass fiber sheet before Kidan heat panels, coupling one end of a plurality of connecting rods in iron muscle mesh Then, the heat insulating panel is placed on the inside and the outer mold is placed on the outer side with the reinforcing bar interposed therebetween, and the outer mold is connected to the other end of the connecting rod. While placing concrete between the heat insulating panel and the heat insulating panel to form a reinforced concrete wall, the reinforced concrete wall and the heat insulating panel are integrated by the connecting rod and the reinforced mesh,
It is configured by removing the outer mold.
【００１１】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、一方のガラス繊維シートの外面
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。
連結ロッドの他端に雄ネジ部を形成し、アウタ型枠の外
面において連結ロッドの他端にナットを螺合することに
より、アウタ型枠に連結ロッドの他端を連結することも
できる。 The reinforcing bar mesh may be adhered to the outer surface of one of the glass fiber sheets by a glass fiber sheet impregnated with an adhesive resin. It is possible to provide the connecting rods with spacers which determine the distance between the outer surface of the reinforced concrete wall and the insulating panel, ie the thickness of the reinforced concrete wall.
Form a male thread on the other end of the connecting rod to
In screwing the nut to the other end of the connecting rod
It is also possible to connect the other end of the connecting rod to the outer formwork.
it can.
【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、所定の間隔をおい
て配 置したガラス繊維シートを、その間に架設された補
強織物でステッチングして連結し、これらガラス繊維シ
ートの間に断熱性芯材を充填して断熱パネルを形成する
ステップと、前記断熱パネルの一方のガラス繊維シート
の外面に鉄筋メッシュを取り付けると共に、該鉄筋メッ
シュに複数の連結ロッドの一端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、前記アウタ型枠に連結ロッドの他端を連結するステ
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し、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
メッシュによって一体化するステップと、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。The method for constructing a sidewall structure for an LNG storage tank according to the present invention comprises a step of arranging reinforcing bars at a portion where concrete is placed, and a predetermined interval.
Glass fiber sheet was placed Te was laid therebetween complement
Stitch them together with strong fabric to connect them, and
Insulating core material is filled between the sheets to form an insulating panel
Attaching a rebar mesh to the outer surface of one of the glass fiber sheets of the heat insulating panel and coupling one end of a plurality of connecting rods to the rebar mesh;
Arranging the heat insulating panel on the inner side and the outer formwork on the outer side with the reinforcing bar interposed therebetween, and respectively arranging the outer formwork at a predetermined interval, and connecting the other end of the connecting rod to the outer formwork; and the outer formwork. and by Da設concrete between the insulating panel forms a reinforced concrete wall, the iron muscle co
The connecting rod and the reinforcing bar for connecting the inner wall and the heat insulation panel
It consists of integrating with a mesh and curing the reinforced concrete wall before 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。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 2 shows an LNG storage tank 600 that employs 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 and 14a are laminated on both surfaces of a heat insulating core material 14b. Insulation panel 1
The reinforcing bar mesh 16 is attached to the outer surface of No. 4, and a plurality of connecting rods 18 which are orthogonal to the reinforcing bar mesh 16 and extend outward are connected to the reinforced concrete wall 2
The reinforced concrete wall 22 and the heat insulation panel 14 are integrated with each other via the connecting rod 18 and the 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 stitching a pair of glass fiber sheets 14a, 14a, which are arranged at a distance from each other, with a reinforcing fabric 24 laid in a zigzag shape between them to connect the glass fibers on both sides. Sheets 14a, 14
Insulating core 14 made of polyurethane foam between a
It is formed by filling b. The reinforcing woven fabric 24 may be selected from glass fiber woven fabric, carbon fiber woven fabric or other synthetic fiber woven fabric. Such an insulation panel 14
Fiberglass sheets 14a, 14a by the reinforcing fabric 24
Since it has a sandwich structure in which the heat insulating core material 14b, which is a foam, is organically bonded to each other, not only the heat insulating property but also the durability against shear stress can be exhibited.
【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寄りの一方のガラス繊維
シート１４ａの外面に接着されている。The reinforced mesh 16 is adhered to the outer surface of one glass fiber sheet 14a near the reinforced concrete wall 22 constituting the heat insulating panel 14 via the 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 used for the reinforced concrete wall 2
2 is slightly longer than the thickness of 2 and is orthogonal to the plane including the reinforcing mesh 16, that is, the sidewall structure 1
It is arranged along the radial direction of 0, and its inner end is joined to the reinforcing mesh 16. Further, the connecting rod 18 reaches the outside of the reinforced concrete wall 22, and its outer end portion is a male screw portion. Furthermore, in order to determine the thickness of the reinforced concrete wall 22 by controlling the distance between the outer formwork 20 described later and the heat insulation panel 14 on the outer circumference of the connecting rod 18, a length corresponding to the thickness of the reinforced concrete wall 22. A pipe-shaped spacer 30 having a thickness 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
て断熱パネル１４を形成し、一方のガラス繊維シート１
４ａ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
の内端部を結合しておく。The construction method of the sidewall structure 10 is as follows. Reinforcing bars 12 are laid out in the area where concrete is placed. Further, the glass fiber sheets 14a and 14a are laminated on both surfaces of the heat insulating core material 14b to form the heat insulating panel 14, and one glass fiber sheet 1 is formed.
The reinforcing bar mesh 16 is previously attached to the outer surface of 4a via the glass fiber sheet 26, and
And a plurality of connecting rods 18 that extend outward at right angles to this.
Join the inner ends of .
【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。Then, the heat insulating panel 14 is arranged on the inner side of the reinforcing bar 12 and the outer formwork 20 is arranged on the outer side thereof with a predetermined gap therebetween, and on the outer surface side of the outer formwork 20, the outer end of the connecting rod 18 is arranged. Screw the nut 28 into the
The outer formwork 20 and the heat insulating panel 14 are connected via a connecting rod 18. At this time, the outer formwork 20 and the heat insulation panel 14 are regulated by the spacer 30 and are arranged at a distance corresponding to the design thickness of the reinforced concrete wall 22.
【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 formwork 20 and the heat insulating panel 14
Placing concrete between and reinforced concrete wall 2
4 is formed, and the reinforced concrete wall 22 and the heat insulation panel 14 are integrated via the connecting rod 18 and the reinforced mesh 16. Further, after curing the reinforced concrete wall 22, the nut 28 is removed from the connecting rod 18, and the outer formwork 20 is removed. Finally, as shown in FIG. 2, as with the conventional storage tank, the membrane 400 is attached to the inner peripheral surface and the bottom surface of the sidewall structure 10, and
The dome roof 500 is attached to the upper surface to form the LNG storage tank 600.
【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 in this way
Since the heat insulation panel 14 is attached to the sidewall structure 10 of No. 00 at the same time as the construction of the reinforced concrete wall 22, the work of adhering the heat insulation panel 14 is unnecessary and the construction is simplified. In particular, the heat insulation panel 14 is usually 2.7 × 12.0 m per sheet, and in the case of the storage tank 600 of about 130,000 m 3 , about 260 heat insulation panels 14 are required. If the bonding work is unnecessary, the construction period can be shortened significantly.
【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 through the connecting rod and the reinforced mesh at the same time when the concrete is poured, the work of adhering the heat insulating panel to the reinforced concrete wall becomes unnecessary. Not only that, but because the heat insulation panel doubles as the inner formwork,
The time and labor required for assembling and removing the formwork are halved, and as a result, the construction period can be significantly shortened and the construction cost can be reduced. Also, as the heat insulating panel, a sandwich panel made by laminating glass fiber sheets on both sides of a heat insulating core material was used, so it is lighter in weight than the one in which plywood is stuck on both sides, and it is embedded in a reinforced concrete wall. With the rod and the reinforced mesh, it is possible to prevent the heat insulating panel from sagging or peeling in combination with being 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
シートの間に断熱性芯材を充填して成る断熱パネルを用
いたので、断熱パネルの強度が高まり、このため、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。Further, a heat insulating panel formed by stitching and connecting glass fiber sheets on both sides with a reinforcing fabric and filling a heat insulating core material between the glass fiber sheets is used.
Therefore, the strength of the heat insulation panel is increased, and thus 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 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 sectional view of an LNG storage tank according to an 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 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: First of the conventional construction process of the sidewall structure
Sectional view showing steps
【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] Second step of the conventional construction process of the sidewall structure
Sectional view showing steps
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 10 Sidewall structure 12 rebar 14 Insulation panel 14a Insulating core material (polyurethane foam) 14b glass fiber sheet 16 rebar mesh 18 Connecting rod 20 Outer formwork 22 Reinforced concrete wall 24 Reinforcing fabric 26 glass fiber sheet 28 nuts 30 spacers
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平10−332099（ＪＰ，Ａ) 特開 平９−159354（ＪＰ，Ａ) 特開 平11−91037（ＪＰ，Ａ) 特開 平９−303095（ＪＰ，Ａ) 特開 平３−90340（ＪＰ，Ａ) 実開 平２−141053（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) E04H 7/18 F17C 3/04 E04B 2/84 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-10-332099 (JP, A) JP-A-9-159354 (JP, A) JP-A-11-91037 (JP, A) JP-A-9- 303095 (JP, A) JP-A-3-90340 (JP, A) Actual development HEI 2-141053 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) E04H 7/18 F17C 3 / 04 E04B 2/84
Claims (5)
配筋し、所定の間隔をおいて配置したガラス繊維シート
を、その間に架設された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
を形成し、前記断熱パネルの一方のガラス繊維シートの
外面に鉄筋メッシュを取り付け、該鉄筋メッシュに複数
の連結ロッドの一端を結合し、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、前記アウタ型枠に前記連結
ロッドの他端を連結し、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によって一体化し、前
記アウタ型枠を除去したことを特徴とするＬＮＧ貯蔵タ
ンクのサイドウォール構造体。1. Reinforcing bars are laid in a portion where concrete is cast, and glass fiber sheets arranged at a predetermined interval are stitched together by a reinforcing fabric laid between them to connect the glass fibers. Polyure between fiber sheets
The insulating panel is formed by filling a thermally insulating core material made of tan foam, rebar mesh attached to one outer surface of the glass fiber sheet before Kidan heat panel, and one end coupled to the plurality of connecting rods in iron muscle mesh , The heat insulating panel on the inner side of the reinforcing bar, the outer formwork on the outer side, respectively, are arranged at a predetermined interval from each other, the other end of the connecting rod is connected to the outer formwork, and the outer formwork LNG characterized in that concrete is cast between the heat insulating panel and the reinforced concrete wall to form the reinforced concrete wall, the reinforced concrete wall and the heat insulating panel are integrated by the connecting rod and the reinforced mesh, and the outer formwork is removed. Storage tank sidewall structure.
せたガラス繊維シートにより、前記一方のガラス繊維シ
ートの外面に接着された請求項１に記載のＬＮＧ貯蔵タ
ンクのサイドウォール構造体。2. The reinforcing fiber mesh is made of a glass fiber sheet impregnated with an adhesive resin, and
The sidewall structure of the LNG storage tank according to claim 1, which is adhered to an outer surface of the container.
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又は２に記載のＬＮＧ貯蔵タンクのサイドウォール
構造体。The wherein the connecting rod, the sidewall structure of the LNG storage tank according to claim 1 or 2 provided with a spacer for determining the distance between the insulation panel and the outer formwork.
し、前記アウタ型枠の外面において前記連結ロッドの他
端にナットを螺合することにより、前記アウタ型枠に連
結ロッドの他端を連結した請求項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. A male screw portion is formed on the other end of the connecting rod.
On the outer surface of the outer mold,
By connecting a nut to the end, connect it to the outer mold.
The method according to any one of claims 1 to 3, wherein the other end of the connecting rod is connected.
A sidewall structure for an LNG storage tank as described.
配筋するステップと、所定の間隔をおいて配置したガラ
ス繊維シートを、その間に架設された補強織物でステッ
チングして連結し、これらガラス繊維シートの間に断熱
性芯材を充填して断熱パネルを形成するステップと、前
記断熱パネルの一方のガラス繊維シートの外面に鉄筋メ
ッシュを取り付けると共に、該鉄筋メッシュに複数の連
結ロッドの一端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
枠に前記連結ロッドの他端を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し、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によ
って一体化するステップと、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 reinforcing bars in a portion where concrete is poured, and a glass which is arranged at a predetermined interval.
Staple fiber sheet with reinforcing fabric laid between them.
Insulation between these glass fiber sheets
The step of filling the conductive core material to form the insulation panel, and
A step of attaching a reinforcing bar mesh to the outer surface of one glass fiber sheet of the heat insulating panel, and connecting one end of a plurality of connecting rods to the reinforcing bar mesh; Formwork
Arranged at a predetermined interval from each other , connecting the other end of the connecting rod to the outer formwork, and placing concrete between the outer formwork and the heat insulation panel to form a reinforced concrete wall , The reinforced concrete wall
And the heat insulation panel by the connecting rod and the reinforcing bar mesh.
And a step of curing the reinforced concrete wall and then removing the outer formwork, the method for constructing a sidewall structure of an LNG storage tank.
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 JP2000336969A (en) | 2000-12-05 |
| JP3428515B2 true 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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1028916B1 (en) * | 2020-12-18 | 2022-07-19 | Bio Dynamics Nv | INSULATED CONCRETE TANK AND PROCEDURE FOR INSULATING A CONCRETE TANK |
Families Citing this family (8)
| 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 |
| KR100964825B1 (en) | 2009-11-05 | 2010-06-24 | 한국가스공사 | Wall structure for building a liquefied gas storage tank |
| KR100964824B1 (en) | 2009-11-05 | 2010-06-23 | 한국가스공사 | Method for building a liquefied gas storage tank |
| 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 |
| KR101577743B1 (en) * | 2014-01-06 | 2015-12-16 | 삼성물산 주식회사 | Lng storage tank and construction method for lng 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 |
| CN111851777B (en) * | 2020-07-24 | 2021-09-03 | 江苏凯翔建设集团有限公司 | Reinforced structure of reinforced concrete wall and reinforcing method thereof |
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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1028916B1 (en) * | 2020-12-18 | 2022-07-19 | Bio Dynamics Nv | INSULATED CONCRETE TANK AND PROCEDURE FOR INSULATING A CONCRETE TANK |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20000074754A (en) | 2000-12-15 |
| JP2000336969A (en) | 2000-12-05 |
| KR100375501B1 (en) | 2003-03-10 |
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