JP6859013B2 - Manufacturing method of concrete housing and concrete housing - Google Patents

Manufacturing method of concrete housing and concrete housing Download PDF

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JP6859013B2
JP6859013B2 JP2017053643A JP2017053643A JP6859013B2 JP 6859013 B2 JP6859013 B2 JP 6859013B2 JP 2017053643 A JP2017053643 A JP 2017053643A JP 2017053643 A JP2017053643 A JP 2017053643A JP 6859013 B2 JP6859013 B2 JP 6859013B2
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housing
concrete
cement composition
sheet
peripheral edge
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JP2018154384A (en
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紳也 佐竹
紳也 佐竹
雄亮 杉野
雄亮 杉野
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Taiheiyo Materials Corp
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Description

本発明はコンクリート製筺体に関する。特に、内部が空洞でかつ上下一体であるコンクリート製筺体に関する。 The present invention relates to a concrete housing. In particular, the present invention relates to a concrete housing in which the inside is hollow and the top and bottom are integrated.

一般的に箱型構造(筐体)のコンクリート構造物(製品)は少ない。コンクリート製品の多くは一面が解放されている(例えば、特許文献1)。 Generally, there are few concrete structures (products) having a box-shaped structure (housing). Many concrete products are open on one side (for example, Patent Document 1).

ところで、近年、放射線汚染物等を収納するため箱型構造のコンクリート製品が製造され、使用されることがある。 By the way, in recent years, concrete products having a box-shaped structure may be manufactured and used to store radioactive contaminants and the like.

コンクリート製筺体は、一般に、開口部を有する下部構造と蓋である上部構造が別々に製造されている。上部構造と下部構造とを一体化させるため、凹凸を設けたり、金属類(ボルト)で緊結したりする。 In a concrete housing, a lower structure having an opening and a superstructure which is a lid are generally manufactured separately. In order to integrate the upper structure and the lower structure, unevenness is provided or they are tied together with metals (bolts).

上部構造と下部構造とを別々に製造した後に両者を一体化させる場合、隙間が発生し、気密性が悪く、内容物によっては、水分やガス漏れのおそれがある。また、外部からの侵入のおそれもある。 When the upper structure and the lower structure are manufactured separately and then integrated, a gap is generated, the airtightness is poor, and there is a risk of moisture or gas leakage depending on the contents. In addition, there is a risk of intrusion from the outside.

特開平08−074309公報Japanese Patent Application Laid-Open No. 08-074309

本願発明者は、上部構造と下部構造とを一体施工することにより、隙間のないコンクリート製筺体を製造しようと試みた。 The inventor of the present application has attempted to manufacture a concrete housing without gaps by integrally constructing an upper structure and a lower structure.

外壁用外型枠と内壁用内型枠を設置し、型枠が形成する空間に、コンクリートを打ち込み、下部構造を形成し、さらに、内型枠の上面に蓋底部型枠を設置し、コンクリートを打ち込み、上部構造(蓋)を形成することで、一体施工が可能である。 An outer formwork for the outer wall and an inner formwork for the inner wall are installed, concrete is poured into the space formed by the formwork to form a substructure, and a lid bottom formwork is installed on the upper surface of the inner formwork to make concrete. By driving in and forming the upper structure (lid), integrated construction is possible.

しかし、上記の場合、内型枠が埋め殺しとなり不経済である、内枠埋め殺しの分だけ内部空洞が狭くなる、内型枠の構造が複雑になり、内型枠の設置に手間取り施工性に劣る、下部構造の底部コンクリートが硬化した後に蓋底部型枠を設置するため、長い施工時間を要するなどの課題がある。 However, in the above case, it is uneconomical because the inner formwork is buried, the internal cavity is narrowed by the amount of the inner formwork filling, the structure of the inner formwork becomes complicated, and it takes time to install the inner formwork. Inferior to the above, since the formwork at the bottom of the lid is installed after the bottom concrete of the substructure has hardened, there are problems such as a long construction time.

本発明は、簡易な構成で経済的であり、施工が容易で、施工時間が短いコンクリート製筺体を提供することを目的とする。 An object of the present invention is to provide a concrete housing that has a simple structure, is economical, is easy to construct, and has a short construction time.

上記課題を解決する本発明は、コンクリート製筺体である。コンクリート製筺体は、底面部と側面部と内部空洞と上部開口とを有する筺体下部と、前記筺体下部の上部に設けられる筺体上部と、前記筺体下部と前記筺体上部との間に設けられるシートとを備える。前記筺体上部の下面周縁部と前記筺体下部の上端面周縁部とは連続して形成されている。 The present invention that solves the above problems is a concrete housing. The concrete housing includes a lower part of the housing having a bottom surface, a side surface, an internal cavity, and an upper opening, an upper part of the housing provided on the upper part of the lower part of the housing, and a sheet provided between the lower part of the housing and the upper part of the housing. To be equipped. The lower surface peripheral portion of the upper part of the housing and the upper end surface peripheral portion of the lower part of the housing are continuously formed.

これにより、筺体下部と筺体上部との連続性、一体性が担保される。 As a result, the continuity and unity between the lower part of the housing and the upper part of the housing are ensured.

本発明において、好ましくは、前記筺体上部および前記筺体下部はセメント組成物を含み、前記セメント組成物は速硬性セメント組成物である。 In the present invention, preferably, the upper part of the housing and the lower part of the housing contain a cement composition, and the cement composition is a quick-hardening cement composition.

これにより、施工時間が短くなる。 This shortens the construction time.

本発明において、好ましくは、前記筺体上部および前記筺体下部はセメント組成物を含み、前記セメント組成物はポリマーセメントセメント組成物である。 In the present invention, preferably, the upper part of the housing and the lower part of the housing contain a cement composition, and the cement composition is a polymer cement cement composition.

これにより、筺体下部と筺体上部との付着性および、シートと筺体下部・筺体上部との付着性が担保される。 As a result, the adhesiveness between the lower part of the housing and the upper part of the housing and the adhesiveness between the sheet and the lower part of the housing and the upper part of the housing are ensured.

本発明において、好ましくは、前記シートが連続繊維シートである。 In the present invention, the sheet is preferably a continuous fiber sheet.

本発明において、好ましくは、前記連続繊維シートが炭素繊維である。 In the present invention, the continuous fiber sheet is preferably carbon fiber.

本発明において、好ましくは、前記連続繊維シートが樹脂含浸した連続繊維シートである。 In the present invention, the continuous fiber sheet is preferably a continuous fiber sheet impregnated with a resin.

本発明において、好ましくは、前記シートは、複数の樹脂含浸した連続繊維シートが直交して積層して形成されている。 In the present invention, preferably, the sheet is formed by laminating a plurality of resin-impregnated continuous fiber sheets at right angles.

これにより、シートは、製造時には底型枠として、製品時には補強材として機能する。 As a result, the sheet functions as a bottom formwork during manufacturing and as a reinforcing material during production.

本発明において、好ましくは、前記筺体上部内部に埋設される格子状補強材を更に備える。 In the present invention, preferably, a grid-like reinforcing material embedded inside the upper part of the housing is further provided.

上記課題を解決する本発明は、コンクリート製筺体の製造方法である。外型枠および内型枠を設置する工程と、前記外型枠および内型枠が形成する空間にセメント組成物を充填し、筺体下部を形成する工程と、前記内型枠を取り外す工程と、前記筺体下部上端面に周縁部を残してシートを設置する工程と、前記外型枠、前記シートおよび前記筺体下部の上端面周縁部が形成する空間にセメント組成物を充填し、筺体上部を形成する工程と、前記外型枠を取り外す工程と、を備える。 The present invention that solves the above problems is a method for manufacturing a concrete housing. A step of installing the outer formwork and the inner formwork, a step of filling the space formed by the outer formwork and the inner formwork with the cement composition to form the lower part of the housing, and a step of removing the inner formwork. The step of installing the sheet leaving the peripheral edge on the upper end surface of the lower part of the housing and the space formed by the outer form, the sheet and the upper end surface of the lower part of the housing are filled with the cement composition to form the upper part of the housing. A step of removing the outer mold and a step of removing the outer mold are provided.

本願発明では、構成が簡易であり経済的である。施工が容易で、施工時間が短い。 In the present invention, the configuration is simple and economical. Easy to install and short construction time.

本実施形態に係るコンクリート製筺体の分解斜視図である。It is an exploded perspective view of the concrete housing body which concerns on this embodiment. 本実施形態に係るコンクリート製筺体の部分断面斜視図である。It is a partial cross-sectional perspective view of the concrete housing which concerns on this embodiment. 本実施形態に係るシートの一例である。This is an example of a sheet according to this embodiment. 本実施形態に係るコンクリート製筺体の製造方法の各工程である(筺体下部形成)。Each step of the method for manufacturing a concrete housing according to the present embodiment (formation of the lower part of the housing). 本実施形態に係るコンクリート製筺体の製造方法の各工程である(筺体上部形成)。Each step of the method for manufacturing a concrete housing according to the present embodiment (formation of the upper part of the housing).

〜構成〜
本実施形態に係るコンクリート製筺体について説明する。図1は、分解斜視図である。図2は、部分断面斜視図である。
~Constitution~
The concrete housing body according to this embodiment will be described. FIG. 1 is an exploded perspective view. FIG. 2 is a partial cross-sectional perspective view.

コンクリート製筺体は、筺体下部10と筺体上部20とシート30とが一体となることにより形成される。 The concrete housing is formed by integrating the lower part 10 of the housing, the upper part 20 of the housing, and the sheet 30.

筺体下部10は、底面部11と側面部12を有する。底面部11の周縁部から側面部12が立設されることにより、内部空洞13と上部開口14と筺体下部上端面15が形成される。なお、内容物は内部空洞13に設置される。 The lower part 10 of the housing has a bottom surface portion 11 and a side surface portion 12. By erecting the side surface portion 12 from the peripheral edge portion of the bottom surface portion 11, the internal cavity 13, the upper opening 14, and the lower upper end surface 15 of the housing are formed. The contents are installed in the internal cavity 13.

筺体上部20は、平板状であり、上部開口14に蓋をするように、筺体下部10の上部に設けられている。 The upper part 20 of the housing has a flat plate shape, and is provided on the upper part of the lower part 10 of the housing so as to cover the upper opening 14.

シート30は、筺体下部10と筺体上部20との間に設けられ、筺体下部上端面15および筺体上部下面21と一体化している。 The sheet 30 is provided between the lower part 10 of the housing and the upper part 20 of the housing, and is integrated with the upper end surface 15 of the lower part of the housing and the lower surface 21 of the upper part of the housing.

シート30の寸法は、上部開口14外周より一回り大きく、筺体下部上端面15外周より一回り小さい。これにより、筺体下部上端面15の周縁部15aは、シート30と接しない状態となっている。 The size of the sheet 30 is one size larger than the outer circumference of the upper opening 14 and one size smaller than the outer circumference of the lower upper end surface 15 of the housing. As a result, the peripheral edge portion 15a of the upper end surface 15 of the lower part of the housing is in a state of not being in contact with the sheet 30.

筺体上部の下面周縁部21aと筺体下部の上端面周縁部15aとは連続して形成されている。 The lower surface peripheral edge 21a of the upper part of the housing and the upper end surface peripheral edge 15a of the lower part of the housing are continuously formed.

筺体下部10と筺体上部20とが境界なく連続して一体化していることにより、シート30は筺体下部10と筺体上部20の両方に埋設される。 Since the lower part 10 of the housing and the upper part 20 of the housing are continuously integrated without a boundary, the sheet 30 is embedded in both the lower part 10 of the housing and the upper part 20 of the housing.

筺体下部10および筺体上部20はコンクリート(もしくはモルタル)である。すなわち、セメント組成物により形成される。 The lower part 10 of the housing and the upper part 20 of the housing are concrete (or mortar). That is, it is formed by a cement composition.

セメントとして、ポルトランドセメントを用いてもよいが、速硬性セメント、ポリマーセメント、速硬性ポリマーセメントを用いることが好ましい。 Portland cement may be used as the cement, but it is preferable to use quick-hardening cement, polymer cement, or fast-hardening polymer cement.

ポリマーセメントを用いることで、曲げ強度に優れ、シート30との付着性および筺体下部10と筺体上部20との付着性に優れる(後述する製法を参照)。また、乾燥収縮が小さいため、ひび割れが発生しにくく、筺体内部の気密性が保てる。更に、物資透過性(水分、塩分)、凍結融解抵抗性が高いため、耐久性に優れる。ポリマーとしては、各種セメント用ポリマーが使用できるが、特にスチレンブタジエンゴム系ポリマーが好ましい。 By using the polymer cement, the bending strength is excellent, the adhesiveness to the sheet 30 and the adhesiveness between the lower part 10 of the housing and the upper part 20 of the housing are excellent (see the manufacturing method described later). In addition, since the drying shrinkage is small, cracks are unlikely to occur, and the airtightness inside the housing can be maintained. Furthermore, it has excellent durability because it has high material permeability (moisture, salt content) and freeze-thaw resistance. As the polymer, various cement polymers can be used, but a styrene-butadiene rubber-based polymer is particularly preferable.

速硬性セメントを用いることによって、筺体の一体化作業を速やかに完了することができる。製品工場で製造するのではなく、設置現場で製造作業を行うことができる(後述する製法を参照)。 By using the quick-hardening cement, the work of integrating the housing can be completed quickly. It is possible to carry out the manufacturing work at the installation site instead of manufacturing at the product factory (see the manufacturing method described later).

シート30は、所定の剛性を有していれば、特に限定されないが、施工が容易であるなどの点から、連続繊維シートであることが好ましい。連続繊維シートは、炭素繊維、ガラス繊維、アラミドやビニロンのような有機繊維等の連続繊維からなるシートである。特に引張強度や剛性に優れる炭素繊維シートが好ましい。また、1軸方向性を有する連続繊維シートの他に、2軸以上の多軸で製造された連続繊維シートであってもよい。さらに、エポキシ樹脂やメタクリル樹脂等の樹脂を含浸した連続繊維シートであってもよい。特にマトリックス樹脂としてエポキシ樹脂を含浸・硬化させた炭素繊維の連続繊維シートが好ましい。 The sheet 30 is not particularly limited as long as it has a predetermined rigidity, but is preferably a continuous fiber sheet from the viewpoint of easy construction and the like. The continuous fiber sheet is a sheet made of continuous fibers such as carbon fiber, glass fiber, and organic fiber such as aramid and vinylon. In particular, a carbon fiber sheet having excellent tensile strength and rigidity is preferable. Further, in addition to the continuous fiber sheet having uniaxial directionality, a continuous fiber sheet manufactured with two or more axes may be used. Further, it may be a continuous fiber sheet impregnated with a resin such as an epoxy resin or a methacrylic resin. In particular, a continuous fiber sheet of carbon fibers impregnated and cured with an epoxy resin is preferable as the matrix resin.

本実施形態のシート30では、一例として複数(例えば2枚または4枚)の樹脂含浸した連続繊維シート30A、30Bが直交して積層し、一枚の平板として形成されている。さらに、更に樹脂が塗付されていてもよい。 In the sheet 30 of the present embodiment, as an example, a plurality of (for example, two or four) resin-impregnated continuous fiber sheets 30A and 30B are laminated at right angles to form one flat plate. Further, a resin may be further applied.

本実施形態のシート30は、樹脂含浸した連続繊維シートの凹凸により、筺体上部下面21との付着性および筺体下部上端面15との付着性に優れる。 The sheet 30 of the present embodiment is excellent in adhesiveness to the lower surface 21 of the upper part of the housing and to the upper end surface 15 of the lower part of the housing due to the unevenness of the continuous fiber sheet impregnated with the resin.

図3は、樹脂含浸した連続繊維シートの一例と、詳細拡大図である。 FIG. 3 is an example of a resin-impregnated continuous fiber sheet and a detailed enlarged view.

樹脂含浸した連続繊維シートとしては、炭素繊維などの連続繊維をエポキシ樹脂等に含浸させ、棒状に硬化させ、一方向に配列し、すだれ状に加工した強化繊維シートが市販されており(例えば「ストランドシート」(登録商標))、これらを用いることができる。 As a resin-impregnated continuous fiber sheet, a reinforcing fiber sheet obtained by impregnating a continuous fiber such as carbon fiber with an epoxy resin or the like, curing it in a rod shape, arranging it in one direction, and processing it into a blind shape is commercially available (for example, "" "Strand sheet" (registered trademark)), these can be used.

一般的に、既設コンクリート構造物の表面にエポキシ樹脂等の常温硬化型接着剤を用いて接着し、補修・補強に用いられている。 Generally, it is adhered to the surface of an existing concrete structure using a room temperature curable adhesive such as epoxy resin, and is used for repair and reinforcement.

ストランドシートは、すだれ形状により変形自在であり、可搬性に優れる。また、任意のコンクリート構造物表面形状に対応可能である。 The strand sheet is deformable due to its blind shape and is excellent in portability. Moreover, it can correspond to any concrete structure surface shape.

〜変形例〜
筺体上部20に強度が必要な場合は、筺体上部20内部に、適宜、格子状強材25が埋設されていてもよい(図2参照)。格子状補強材としては、所定の剛性を有しているものであれば特に限定されないが、格子状連続繊維補強材が好ましい。格子状連続繊維補強材25は、連続繊維をエポキシ樹脂等に含浸させ、棒状に硬化させ、2方向に配列し、格子状に加工したものである。
~ Modification example ~
When strength is required for the upper part 20 of the housing, a grid-like strong material 25 may be appropriately embedded inside the upper part 20 of the housing (see FIG. 2). The lattice-shaped reinforcing material is not particularly limited as long as it has a predetermined rigidity, but a lattice-shaped continuous fiber reinforcing material is preferable. The lattice-shaped continuous fiber reinforcing material 25 is obtained by impregnating continuous fibers with an epoxy resin or the like, curing them in a rod shape, arranging them in two directions, and processing them in a lattice shape.

一般に、筺体は矩形状であるが、円筒状でも良い。 Generally, the housing is rectangular, but it may be cylindrical.

〜製造方法〜
本実施形態に係るコンクリート製筺体の製造方法について説明する。図4は、筺体下部形成までの工程(工程A→D)を説明する図である。図5は、筺体下部形成後、筺体上部形成までの工程(工程E→H)を説明する図である。
~Production method~
A method for manufacturing a concrete housing according to the present embodiment will be described. FIG. 4 is a diagram illustrating a step (steps A → D) up to the formation of the lower part of the housing. FIG. 5 is a diagram illustrating a step (step E → H) from the formation of the lower part of the housing to the formation of the upper part of the housing.

本実施形態に係るコンクリート製筺体の製造方法は、速硬性ポリマーセメントコンクリート(もしくはモルタル)および連続繊維シートを用いて、筺体下部10および筺体上部20とを連続して一体化することを特徴とする。以下、一例について説明する。 The method for manufacturing a concrete housing according to the present embodiment is characterized in that the lower portion 10 of the housing and the upper portion 20 of the housing are continuously integrated by using a fast-curing polymer cement concrete (or mortar) and a continuous fiber sheet. .. An example will be described below.

まず、筺体天端高よりやや高い高さまでの外型枠41を設置する。上方を開口とする(工程A)。 First, the outer form 41 is installed up to a height slightly higher than the height of the top of the housing. The upper part is an opening (step A).

外型枠41内に内型枠42を設置する(工程B)。内型枠42は内部空洞13に相当する。例えば、内型枠42は塩化ビニルや発泡スチロールにより形成されている。底面打設が可能なように、底面から浮いた状態とし、吊り支持部43により外型枠41上部に吊り支持されている。吊り支持部43はコンクリート打設時内型枠42が浮き上がることも防止する。 The inner mold 42 is installed in the outer mold 41 (process B). The inner form 42 corresponds to the inner cavity 13. For example, the inner mold 42 is made of vinyl chloride or styrofoam. It is suspended from the bottom surface so that it can be placed on the bottom surface, and is suspended and supported on the upper part of the outer form 41 by the suspension support portion 43. The suspension support portion 43 also prevents the inner formwork 42 from floating when the concrete is placed.

外型枠41および内型枠42が形成する空間に、筺体下部10天端高まで速硬性ポリマーセメントコンクリートを充填する(工程C)。コンクリート硬化により筺体下部10が形成される。 The space formed by the outer formwork 41 and the inner formwork 42 is filled with fast-curing polymer cement concrete up to the height of the top 10 of the lower part of the housing (step C). The lower part 10 of the housing is formed by hardening the concrete.

速硬性ポリマーセメントコンクリートは2〜3時間で硬化し、内型枠42を取り外すことができる(工程D)。具体的には、吊り支持部43を介して内型枠42を上方に引き抜く。 The fast-curing polymer cement concrete is cured in 2 to 3 hours, and the inner formwork 42 can be removed (step D). Specifically, the inner form 42 is pulled out upward via the suspension support portion 43.

これにより、内部空洞13が形成される。内容物を内部空洞13に設置する。 As a result, the internal cavity 13 is formed. The contents are installed in the internal cavity 13.

また、同時に、上部開口14と筺体下部上端面15が形成される。 At the same time, the upper opening 14 and the lower upper end surface 15 of the housing are formed.

なお、底面部11を打設後、内型枠42を設置し、側面部12を打設して、筺体下部10を形成してもよい。 After driving the bottom surface portion 11, the inner form 42 may be installed and the side surface portion 12 may be driven to form the lower portion 10 of the housing.

上部開口14外周より一回り大きく、筺体下部上端面15外周より一回り小さくなるような、シート30を作成する。 The sheet 30 is created so as to be one size larger than the outer circumference of the upper opening 14 and one size smaller than the outer circumference of the lower upper end surface 15 of the housing.

筺体下部上端面15の周縁部15a以外の領域15bに、接着剤(樹脂)を塗付する(工程E)。このとき、筺体上部の下面周縁部21aと筺体下部の上端面周縁部15aの接着面積を十分確保する。たとえば、周縁部15a幅と領域15b幅は、3:7〜7:3程度とすることが好ましい。 An adhesive (resin) is applied to a region 15b other than the peripheral edge portion 15a of the upper end surface 15 of the lower portion of the housing (step E). At this time, a sufficient adhesive area is secured between the lower surface peripheral edge portion 21a of the upper portion of the housing and the upper end surface peripheral edge portion 15a of the lower portion of the housing body. For example, the width of the peripheral edge portion 15a and the width of the region 15b are preferably about 3: 7 to 7: 3.

上部開口14を塞ぐように、上記領域15bにシート30を設置する(工程F)。さらに、シート30上面に接着剤を塗付する。 The sheet 30 is installed in the region 15b so as to close the upper opening 14 (step F). Further, an adhesive is applied to the upper surface of the sheet 30.

外型枠41、シート30および周縁部15aが形成する空間に筺体上部20天端高まで速硬性ポリマーセメントコンクリートを充填する(工程G)。つまり、シート30を底型枠として用いる。筺体上部20に強度が必要な場合は、適宜、格子状連続繊維補強材25を埋設する。 The space formed by the outer form 41, the sheet 30, and the peripheral edge portion 15a is filled with the fast-curing polymer cement concrete up to the height of the top 20 of the housing (step G). That is, the sheet 30 is used as the bottom formwork. When strength is required for the upper part 20 of the housing, a lattice-shaped continuous fiber reinforcing material 25 is appropriately embedded.

コンクリート硬化により筺体上部20が形成される。このとき、ポリマーセメントコンクリートを所定時間内に打設することで、下面周縁部21aと上端面周縁部15aは良好に付着する。 The upper part 20 of the housing is formed by hardening the concrete. At this time, by placing the polymer cement concrete within a predetermined time, the lower surface peripheral edge portion 21a and the upper end surface peripheral edge portion 15a adhere well.

速硬性ポリマーセメントコンクリートは2〜3時間で硬化し、外型枠41を取り外すことができる(工程H)。 The fast-curing polymer cement concrete is cured in 2 to 3 hours, and the outer formwork 41 can be removed (step H).

製品の大きさにもよるが、数時間で一体化した筺体製造が可能である。 Although it depends on the size of the product, it is possible to manufacture an integrated housing in a few hours.

〜効果〜
本実施形態に係るコンクリート製筺体の製造では、下面周縁部21aと上端面周縁部15aとが連続して形成される。これにより、筺体下部10と筺体上部20との連続性、一体性が担保される。
~effect~
In the production of the concrete housing according to the present embodiment, the lower surface peripheral edge portion 21a and the upper end surface peripheral edge portion 15a are continuously formed. As a result, the continuity and integrity of the lower part 10 of the housing and the upper part 20 of the housing are ensured.

本実施形態に係るコンクリート製筺体では、筺体下部10および筺体上部20とが連続して一体化されている。このため、上部と下部とを別々に製造した後に、両者を一体化する従来技術と比較して、気密性が高い。 In the concrete housing body according to the present embodiment, the lower part 10 of the housing body and the upper part 20 of the housing body are continuously integrated. Therefore, the airtightness is higher than that of the conventional technique in which the upper part and the lower part are manufactured separately and then both are integrated.

本実施形態に係るコンクリート製筺体の製造では、シート30を底型枠として用いる。シート30の設置は容易であり、施工が容易である。その結果、施工時間が短い。 In the production of the concrete housing according to the present embodiment, the sheet 30 is used as the bottom formwork. The sheet 30 is easy to install and easy to install. As a result, the construction time is short.

本実施形態に係るコンクリート製筺体では、シート30は筺体下部10および筺体上部20と一体化している(埋設される)。すなわち、シート30は筺体上部下面21に作用する引張力を一部負担する。すなわち、構造物としても機能するため、埋め殺しても無駄とならず、経済的である。 In the concrete housing according to the present embodiment, the sheet 30 is integrated (embedded) with the lower part 10 of the housing and the upper part 20 of the housing. That is, the sheet 30 partially bears the tensile force acting on the upper lower surface 21 of the housing. That is, since it also functions as a structure, it is not wasted even if it is buried, and it is economical.

すなわち、シート30は、製造時には底型枠として、製品時には補強材として機能する。 That is, the sheet 30 functions as a bottom formwork at the time of manufacturing and as a reinforcing material at the time of manufacturing.

本実施形態に係るコンクリート製筺体の製造では、内型枠42の設置は容易であり、施工が容易である。その結果、施工時間が短い。また、内型枠42は埋め殺しされず、無駄とならず、経済的である。また、内型枠42は埋め殺しされない分、内部空洞13を広くできる。 In the production of the concrete housing according to the present embodiment, the inner formwork 42 is easy to install and easy to construct. As a result, the construction time is short. Further, the inner form 42 is not buried, is not wasted, and is economical. Further, since the inner form 42 is not buried, the inner cavity 13 can be widened.

以上の通り、本実施形態に係るコンクリート製筺体は、構成が簡易であり経済的である。また、施工が容易であり、施工時間が短い。 As described above, the concrete housing body according to the present embodiment has a simple structure and is economical. In addition, the construction is easy and the construction time is short.

10 筺体下部
11 底面部
12 側面部
13 内部空洞
14 上部開口
15 筺体下部上端面
20 筺体上部
21 筺体上部下面
25 格子状補強材
30 シート
41 外型枠
42 内型枠
43 吊り支持部
10 Lower part of the housing 11 Bottom surface 12 Side surface 13 Internal cavity 14 Upper opening 15 Upper upper surface of the lower part of the housing 20 Upper part of the housing 21 Lower surface of the upper part of the housing 25 Lattice reinforcing material 30 Sheet 41 Outer form 42 Inner form 43 Suspended support

Claims (5)

速硬性セメント組成物又は/及びポリマーセメント組成物を含み、底面部と側面部と内部空洞と上部開口とを有する筺体下部と、
速硬性セメント組成物又は/及びポリマーセメント組成物を含み、前記筺体下部の上部に設けられる筺体上部と、
前記筺体下部と前記筺体上部との間に設けられる連続炭素繊維シートと
を備え、
前記筺体上部の下面周縁部と前記筺体下部の上端面周縁部とは連続して形成されている
ことを特徴とするコンクリート製筺体。
The lower part of the housing, which contains a fast-curing cement composition and / and a polymer cement composition and has a bottom surface, a side surface, an internal cavity and an upper opening.
A fast-curing cement composition and / and a polymer cement composition, and the upper part of the housing provided on the upper part of the lower part of the housing.
A continuous carbon fiber sheet provided between the lower part of the housing and the upper part of the housing is provided.
A concrete housing characterized in that the lower peripheral edge portion of the upper portion of the housing body and the upper end surface peripheral edge portion of the lower portion of the housing body are continuously formed.
前記連続炭素繊維シートが樹脂含浸した連続炭素繊維シートである
ことを特徴とする請求項1記載のコンクリート製筺体。
The concrete housing according to claim 1, wherein the continuous carbon fiber sheet is a continuous carbon fiber sheet impregnated with a resin.
前記連続炭素繊維は、複数の樹脂含浸した連続炭素繊維シートが直交して積層して形成されている
ことを特徴とする請求項1または2記載のコンクリート製筺体。
The concrete housing according to claim 1 or 2 , wherein the continuous carbon fibers are formed by vertically laminating continuous carbon fiber sheets impregnated with a plurality of resins.
前記筺体上部内部に埋設される格子状補強材
を備えることを特徴とする請求項1〜3何れか記載コンクリート製筺体。
The concrete housing according to any one of claims 1 to 3, further comprising a grid-like reinforcing material embedded inside the upper part of the housing.
外型枠および内型枠を設置する工程と、
前記外型枠および内型枠が形成する空間に速硬性セメント組成物又は/及びポリマーセメント組成物を充填し、筺体下部を形成する工程と、
前記内型枠を取り外す工程と、
前記筺体下部上端面に周縁部を残して連続炭素繊維シートを設置する工程と、
前記外型枠、前記連続炭素繊維シートおよび前記筺体下部の上端面周縁部が形成する空間に速硬性セメント組成物又は/及びポリマーセメント組成物を充填し、筺体上部を形成する工程と、
前記外型枠を取り外す工程と、
を備えることを特徴とするコンクリート製筺体の製造方法。
The process of installing the outer formwork and inner formwork,
A step of filling the space formed by the outer form and the inner form with the quick-curing cement composition and / and the polymer cement composition to form the lower part of the housing.
The process of removing the inner formwork and
The step of installing the continuous carbon fiber sheet leaving the peripheral edge on the upper end surface of the lower part of the housing, and
A step of filling the space formed by the outer form, the continuous carbon fiber sheet, and the peripheral edge of the upper end surface of the lower part of the housing with the fast-curing cement composition and / or the polymer cement composition to form the upper part of the housing.
The process of removing the outer formwork and
A method for manufacturing a concrete housing, which comprises the above.
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