JP2011202491A - Construction method of reinforced concrete building - Google Patents

Construction method of reinforced concrete building Download PDF

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JP2011202491A
JP2011202491A JP2010073637A JP2010073637A JP2011202491A JP 2011202491 A JP2011202491 A JP 2011202491A JP 2010073637 A JP2010073637 A JP 2010073637A JP 2010073637 A JP2010073637 A JP 2010073637A JP 2011202491 A JP2011202491 A JP 2011202491A
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wall
concrete
formwork
steel
floor
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JP5496732B2 (en
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Atsuo Morishita
篤郎 森下
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SANKI SEKKEI JIMUSHO KK
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Abstract

PROBLEM TO BE SOLVED: To provide a construction method of a reinforced concrete building greatly reducing work processes and a cost by using a steel frame concurrently.SOLUTION: A steel framework consisting of a steel column H1 and a steel beam H2 is built in an underground beam structure constructed on base concrete 1. A form C for a wall is formed continuously to a form B for the underground beam, and corrugated steel plates 12 and 18 are fixed to the slab part and the roof part of the steel beam H2. A reinforcement 9 for a wall, a reinforcement 15 for a floor, and a reinforcement 21 for a roof are arranged to be connected together, and concrete is cast integrally to the wall part, the slab part, and the roof part. In this way, a reinforced concrete structure is constructed.

Description

本発明は、鉄骨造の骨組を利用して鉄筋コンクリート造建築物を構築する方法に関する。   The present invention relates to a method for constructing a reinforced concrete structure using a steel frame.

鉄筋コンクリート造建築物では、基礎・地中梁の施工から始まって柱・壁・床スラブの構築というように、下部構造から上部構造へと配筋・型枠組・コンクリート打設・養生・型枠外しといった一連の工程を繰り返して構築していく方法が一般的である。そのため、工程数が多くなって時間及びコスト負担が大きくなるといった施工上の課題がある。   Reinforced concrete structures start from construction of foundations and underground beams and build columns, walls, floor slabs, and so on, from the lower structure to the upper structure, reinforcement, formwork, concrete placement, curing, and removal of formwork A general method is to build by repeating a series of steps. Therefore, there is a construction problem that the number of processes increases and the time and cost burden increase.

一方、鉄筋コンクリート造建築物は、耐久性能及び耐火性能に優れており、適切な構造計算に従って構築することで十分な耐震性能を持たせることも可能である。こうしたメリットを生かしつつ上述した課題を改善する方法の1つとして、鉄筋コンクリート構造及び鉄骨構造を併用する構築方法が提案されている。例えば、特許文献1では、鉄骨建造物において、型枠ユニットパネルにより一対の型枠壁を構築し、内側の型枠壁の一部に配設した有孔板体の通孔にアンカー鉄筋を挿通して床板を接合可能な床板取合部を形成し、内側型枠壁を保持ブラケットにより鉄骨梁に固定し、型枠壁間に作出された内部空間にコンクリートを流し込んで鉄筋コンクリート壁を構築する点が記載されている。   On the other hand, a reinforced concrete structure is excellent in durability and fire resistance, and can be provided with sufficient earthquake resistance by being constructed according to an appropriate structural calculation. As one of the methods for improving the above-described problems while taking advantage of these merits, a construction method using a reinforced concrete structure and a steel structure in combination has been proposed. For example, in Patent Document 1, in a steel structure, a pair of formwork walls is constructed by a formwork unit panel, and an anchor reinforcing bar is inserted into a through-hole of a perforated plate disposed in a part of the inner formwork wall. To form a reinforced concrete wall by forming a floor plate joint that can be joined to the floor plate, fixing the inner formwork wall to the steel beam with a holding bracket, and pouring concrete into the internal space created between the formwork walls Is described.

特開2007−162252号公報JP 2007-162252 A

上述した特許文献1では、鉄骨建造物に鉄筋コンクリート壁を構築するもので、構造的には鉄骨造の骨組が主体となっており、鉄筋コンクリート造構造の特徴が十分生かされた建造物とはなっていない。   In Patent Document 1 described above, a reinforced concrete wall is constructed in a steel structure, and the structure is mainly a steel structure, and it is not a structure that fully utilizes the features of a reinforced concrete structure. Absent.

そこで、本発明は、鉄骨造の骨組を併用して作業工程及びコストを大幅に短縮することができる鉄筋コンクリート造建築物の構築方法を提供することを目的とするものである。   Therefore, an object of the present invention is to provide a method for constructing a reinforced concrete building capable of significantly shortening the work process and the cost by using a steel frame.

本発明に係る鉄筋コンクリート造建築物の構築方法は、鉄骨部材を固定するアンカーボルトに支持されるように配筋された地中梁用鉄筋に壁用鉄筋を立設するように固定するとともに断熱材からなる型枠ユニットパネルにより地中梁用鉄筋の両側に形成された地中梁用型枠内にコンクリートを打設して地中梁構造を施工し、前記アンカーボルトに鉄骨部材を固定して鉄骨造骨組を構築し、立設された前記壁用鉄筋の両側に前記型枠ユニットパネルにより地中梁用型枠に連設して壁用型枠を形成し、前記鉄骨造骨組のスラブ部分に波形鋼板を敷設するとともに当該波型鋼板の上面に沿うように床用鉄筋を配筋して前記壁用鉄筋と連結し、前記壁用型枠内にコンクリートを打設するとともに前記床用鉄筋が埋設されるように前記波形鋼板上部にコンクリートを打設して壁構造及びスラブ構造を一体的に施工することを特徴とする。さらに、前記鉄骨造骨組の屋上部分に波形鋼板を敷設するとともに当該波型鋼板の上面に沿うように屋上用鉄筋を配筋して前記壁用鉄筋と連結し、階下の前記壁構造とともにコンクリートを打設して屋上構造を一体的に施工することを特徴とする。さらに、屋上部分に敷設された前記波形鋼板にパラペット構造を構成する部材を支持固定することを特徴とする。さらに、前記床用鉄筋と前記壁用鉄筋との間をL字状のアンカー筋により緊結することを特徴とする。   The method for constructing a reinforced concrete building according to the present invention is such that a reinforcing bar for a wall is erected on an underground beam reinforcing bar arranged so as to be supported by an anchor bolt for fixing a steel member, and a heat insulating material is provided. The concrete unit is placed in the underground beam formwork formed on both sides of the underground beam rebar by the formwork unit panel, and the underground beam structure is constructed, and the steel frame member is fixed to the anchor bolt. A slab portion of the steel frame is constructed by constructing a steel frame and forming a wall form by connecting to the underground beam form by the form unit panel on both sides of the standing wall reinforcing bar. Corrugated steel sheets are laid on the floor and reinforcing bars for floors are arranged along the top surface of the corrugated steel sheets to connect with the wall reinforcing bars, and concrete is placed in the wall formwork and the floor reinforcing bars The corrugated steel plate Characterized by integrally applying a wall structure and slab structure by Da設 cleats. Furthermore, a corrugated steel sheet is laid on the roof portion of the steel frame, and a roof reinforcing bar is laid along the upper surface of the corrugated steel sheet to connect with the wall reinforcing bar, and the concrete along with the wall structure below the floor. It is characterized in that the rooftop structure is constructed in one piece. Furthermore, the member which comprises a parapet structure is supported and fixed to the said corrugated steel plate laid in the roof part. Furthermore, the floor reinforcing bar and the wall reinforcing bar are fastened by an L-shaped anchor bar.

上記のような構成を有することで、鉄骨造の骨組を仮設建築物として、地中梁構造、壁構造及びスラブ構造を一体化した鉄筋コンクリート造建築物を短期間で構築することができる。   By having the above-described configuration, it is possible to construct a reinforced concrete structure in which the underground beam structure, the wall structure, and the slab structure are integrated in a short period of time using a steel frame as a temporary building.

すなわち、地中梁構造に立設した壁用鉄筋の両側に型枠を形成し、鉄骨造骨組を利用してスラブ構造の波形鋼板の敷設及び床用鉄筋の配筋を行って壁用鉄筋及び床用鉄筋を連結し、壁構造及びスラブ構造のコンクリート打設を一度に行うことができるので、従来のように壁構造及びスラブ構造を別々に施工する場合に比べて工期を大幅に短縮することが可能となる。また、地中梁構造及び壁構造の施工に用いた型枠はそのまま断熱材として使用することができるので、型枠外しの工程が不要となり、その分工期の短縮が可能となる。   That is, formwork is formed on both sides of the wall rebars standing upright in the underground beam structure, and the slab structure corrugated steel sheet is laid and the floor rebars are laid using the steel frame, and the wall rebars and Since the floor reinforcement can be connected and the concrete of the wall structure and slab structure can be placed at once, the construction period can be greatly reduced compared to the case where the wall structure and slab structure are constructed separately as in the past. Is possible. Moreover, since the formwork used for construction of the underground beam structure and the wall structure can be used as a heat insulating material as it is, the process of removing the formwork is not required, and the work period can be shortened accordingly.

骨組に用いた鉄骨造構造は、施工後もそのままスラブ構造を支持する構造材として残るものの、建築物全体の耐久性及び耐震性は鉄筋コンクリート構造が主体となって機能するため、鉄骨構造に耐震性を持たせる必要がなくなり、その分鉄骨部材に要求される強度レベルを低く設定することができ鉄骨部材のコストを軽減することが可能となる。   Although the steel structure used in the framework remains as a structural material that supports the slab structure even after construction, the durability and earthquake resistance of the entire building function mainly with the reinforced concrete structure. Therefore, the strength level required for the steel member can be set low, and the cost of the steel member can be reduced.

また、鉄骨構造は、軽量で強度があることから、比較的大きな空間を形成することに適しており、建築物内部の間取りの自由度が向上するようになる。そして、鉄骨部材は工場で予め製造して建築現場に搬入するため、鉄骨部材の骨組の構築にかかる現場の作業日数は短くて済み、工期への影響を少なくすることができる。   Moreover, since the steel structure is lightweight and strong, it is suitable for forming a relatively large space, and the degree of freedom of floor plan inside the building is improved. And since a steel frame member is manufactured beforehand in a factory and carried in to a construction site, the work days of the field concerning construction of a frame of a steel frame member can be shortened, and the influence on a construction period can be decreased.

地中梁構造の施工に関する工程説明図である。It is process explanatory drawing regarding construction of underground beam structure. 地中梁構造の施工に関する工程説明図である。It is process explanatory drawing regarding construction of underground beam structure. 地中梁構造の施工に関する工程説明図である。It is process explanatory drawing regarding construction of underground beam structure. 地中梁構造の施工に関する工程説明図である。It is process explanatory drawing regarding construction of underground beam structure. 地中梁構造の施工に関する工程説明図である。It is process explanatory drawing regarding construction of underground beam structure. 土間構造の施工に関する工程説明である。It is process description regarding construction of soil structure. 2階のスラブ構造までの施工に関する工程説明図である。It is process explanatory drawing regarding the construction to the slab structure of the 2nd floor. 2階のスラブ構造までの施工に関する工程説明図である。It is process explanatory drawing regarding the construction to the slab structure of the 2nd floor. 2階のスラブ構造までの施工に関する工程説明図である。It is process explanatory drawing regarding the construction to the slab structure of the 2nd floor. 2階のスラブ構造までの施工に関する工程説明図である。It is process explanatory drawing regarding the construction to the slab structure of the 2nd floor. 屋上構造までの施工に関する工程説明図である。It is process explanatory drawing regarding the construction to a rooftop structure. 屋上構造までの施工に関する工程説明図である。It is process explanatory drawing regarding the construction to a rooftop structure.

以下、本発明に係る実施形態について詳しく説明する。なお、以下に説明する実施形態は、本発明を実施するにあたって好ましい具体例であるから、技術的に種々の限定がなされているが、本発明は、以下の説明において特に本発明を限定する旨明記されていない限り、これらの形態に限定されるものではない。   Hereinafter, embodiments according to the present invention will be described in detail. The embodiments described below are preferable specific examples for carrying out the present invention, and thus various technical limitations are made. However, the present invention is particularly limited in the following description. Unless otherwise specified, the present invention is not limited to these forms.

図1から図5は、地中梁構造の施工に関する工程説明図である。地盤内に施工された基礎コンクリート1に鉄骨柱の柱脚部を固定するためのアンカーボルトが複数本立設されている(図1)。アンカーボルト2は、骨組の柱を固定する複数の箇所にそれぞれ必要な本数が立設されている。   FIG. 1 to FIG. 5 are process explanatory diagrams regarding the construction of the underground beam structure. A plurality of anchor bolts for fixing the column base portion of the steel column are erected on the foundation concrete 1 constructed in the ground (FIG. 1). The required number of anchor bolts 2 is provided upright at a plurality of locations where the anchor pillars are fixed.

施工する地中梁に沿ってアンカーボルト2の間に複数本の主筋3が配筋されて支持固定され、主筋3を囲むように取り付けられた枠状の肋筋4が主筋3の長手方向に沿って所定間隔を空けて複数本配列される。こうして、アンカーボルト2の間に角柱状に形成された地中梁用鉄筋Aが横設するように構築される(図2)。   A plurality of main bars 3 are arranged and supported and fixed between the anchor bolts 2 along the underground beam to be constructed, and a frame-shaped barb 4 attached so as to surround the main bar 3 extends in the longitudinal direction of the main bar 3. A plurality of lines are arranged at predetermined intervals along the line. Thus, the underground beam reinforcing bar A formed in a prismatic shape between the anchor bolts 2 is constructed so as to be laid sideways (FIG. 2).

構築された地中梁用鉄筋Aの両側に沿って直線状の溝が形成されたガイド部材6が配置され、ガイド部材6に沿って型枠ユニットパネル5が複数枚配列されて立設される。型枠ユニットパネル5は、矩形状の板状体で、長辺方向の側端をガイド部材6に沿って溝に嵌め込むことで立設される。後述するように、型枠ユニットパネル5を上下方向に隙間なく複数段積み上げるように組み立てていくことで型枠を形成することができる。   Guide members 6 in which straight grooves are formed are arranged along both sides of the built-in reinforcing bar A for underground beams, and a plurality of formwork unit panels 5 are arranged along the guide members 6 and erected. . The formwork unit panel 5 is a rectangular plate-like body, and is erected by fitting a side edge in the long side direction along a guide member 6 into a groove. As will be described later, the formwork can be formed by assembling the formwork unit panels 5 so as to be stacked in a plurality of stages without gaps in the vertical direction.

型枠ユニットパネル5は、発泡合成樹脂材料からなる板状の断熱材であり、コンクリートを打設する際の型枠として使用されるとともに地中梁構造の鉄筋コンクリートが形成された後は両側にそのまま接合した状態で断熱構造として用いられる。   The formwork unit panel 5 is a plate-like heat insulating material made of a foamed synthetic resin material, and is used as a formwork for placing concrete, and is formed on both sides as it is after the reinforced concrete having an underground beam structure is formed. Used as a heat insulating structure in a joined state.

断熱材として使用される発泡合成樹脂材料は、公知のものを使用すればよく、例えば、ポリスチレンフォーム、ポリプロピレンフォーム、ポリエチレンフォーム、ポリウレタンフォーム、フェノールフォーム、アクリルフォームが挙げられ、発泡合成樹脂材料以外にも、不燃性の無機質発泡材料を用いることもできる。そして、ポリスチレンフォームが断熱性及び加工性の観点からみて好ましい。   As the foamed synthetic resin material used as the heat insulating material, a known material may be used, and examples thereof include polystyrene foam, polypropylene foam, polyethylene foam, polyurethane foam, phenol foam, and acrylic foam. Moreover, a nonflammable inorganic foam material can also be used. Polystyrene foam is preferable from the viewpoints of heat insulation and processability.

地中梁用鉄筋Aの両側に立設された型枠ユニットパネル5の上面にはそれぞれレール状の連結部材7が取り付けられる。連結部材7は、断面がT字状で、両側に突き出た部分の一方が型枠ユニットパネル5の上部に押入され、他方が積み上げられる別の型枠ユニットパネルの下部に押入されて上下の型枠ユニットパネルが連結されるようになる。連結部材7の中央に突き出た部分には、複数の係止孔が所定間隔を空けて長手方向に穿設されており、両側の連結部材7の係止孔にはカスガイ状の保持部材8が嵌め込まれて架設され、保持部材8を連結部材7の長手方向に所定間隔で取り付けることで、両側の型枠ユニットパネル5の間が所定間隔で保持されるようになっている(図3)。   Rail-like connecting members 7 are attached to the upper surfaces of the formwork unit panels 5 erected on both sides of the underground beam reinforcing bar A, respectively. The connecting member 7 has a T-shaped cross section, and one of the protruding parts on both sides is pushed into the upper part of the form unit unit panel 5 and the other is pushed into the lower part of another form unit unit panel to be stacked. The frame unit panels are connected. A plurality of locking holes are formed in the longitudinal direction at a predetermined interval in a portion protruding to the center of the connecting member 7, and a hook-shaped holding member 8 is formed in the locking holes of the connecting members 7 on both sides. It is fitted and installed, and the holding member 8 is attached in the longitudinal direction of the connecting member 7 at a predetermined interval, so that the space between the mold unit panels 5 on both sides is held at a predetermined interval (FIG. 3).

ガイド部材6に嵌め込まれて連結部材7及び保持部材8により保持された両側の型枠ユニットパネル5の上部に取り付けた連結部材7に別の型枠ユニットパネル5の下部を嵌め込み、嵌め込んだ型枠ユニットパネル5の上部に連結部材7及び保持部材8を取り付けて保持することで、型枠ユニットパネル5を複数段積み上げるように組み立てていく。地中梁用鉄筋Aよりも高い位置まで型枠ユニットパネル5を複数段組み立てて地中梁用型枠Bを形成する。こうして、地中梁用型枠Bが地中梁用鉄筋Aに沿って両側から挟むように形成される。   The lower part of another formwork unit panel 5 is inserted into the connecting member 7 fitted on the upper part of the formwork unit panels 5 on both sides which are fitted into the guide member 6 and held by the connecting member 7 and the holding member 8. By attaching and holding the connecting member 7 and the holding member 8 on the upper part of the frame unit panel 5, the mold unit unit panels 5 are assembled so as to be stacked in a plurality of stages. A plurality of mold unit panels 5 are assembled to a position higher than the underground beam rebar A to form the underground beam form B. Thus, the underground beam formwork B is formed so as to be sandwiched from both sides along the underground beam reinforcing bar A.

地中梁用鉄筋Aには、壁用鉄筋9が上方から挿入されて配筋され、上下方向に立設される。壁用鉄筋9は、棒状鉄筋を縦横に格子状に配列して形成されており、下部が地中梁用鉄筋Aを貫通するように挿入されて固定され、地中梁用鉄筋Aの長手方向に沿って面状に配列される(図4)。   In the underground beam reinforcing bar A, a wall reinforcing bar 9 is inserted and arranged from above, and is erected in the vertical direction. The wall reinforcing bars 9 are formed by arranging bar-shaped reinforcing bars vertically and horizontally in a grid pattern, and the lower part is inserted and fixed so as to penetrate the underground beam reinforcing bars A. The longitudinal direction of the reinforcing bar A for underground beams Are arranged in a plane shape (FIG. 4).

次に、地中梁用型枠Bの間に形成された内部空間にコンクリートが流し込まれて地中梁用型枠Bの上端までコンクリートが打設され、打設されたコンクリート内に地中梁用鉄筋Aが埋設されて地中梁構造が施工される。地中梁構造が施工された後、土間部分に断熱材10が敷設され、敷設された断熱材10の上部に土間用鉄筋11が敷設される(図5)。断熱材10は、型枠ユニットパネル5と同様の発泡合成樹脂材料から成形された板状体で、土間部分に隙間なく配列される。土間用鉄筋11は、棒状鉄筋を縦横に格子状に配列して形成されており、断熱材10の上部に面状に配列される。   Next, concrete is poured into the interior space formed between the underground beam formwork B, and concrete is cast up to the upper end of the underground beam formwork B, and the underground beam is placed in the placed concrete. Reinforcing bar A is buried and the underground beam structure is constructed. After the underground beam structure is constructed, the heat insulating material 10 is laid in the soil part, and the earth reinforcing bar 11 is laid on the laid heat insulating material 10 (FIG. 5). The heat insulating material 10 is a plate-like body formed from the same foamed synthetic resin material as that of the formwork unit panel 5 and is arranged without a gap in the soil portion. The interstitial reinforcing bars 11 are formed by arranging bar-shaped reinforcing bars vertically and horizontally in a grid pattern, and are arranged in a plane on the top of the heat insulating material 10.

土間部分に敷設された断熱材10及び土間用鉄筋11に上方からコンクリートが流し込まれて、平面状にコンクリートが打設されて土間構造が施工される(図6)。   Concrete is poured from above into the heat insulating material 10 and the soil reinforcing bar 11 laid in the soil part, and the concrete is placed in a flat shape to construct the soil structure (FIG. 6).

地中梁構造及び土間構造といった下部構造を施工した後、壁構造、スラブ構造及び屋上構造といった上部構造を施工する。図7から図10は、2階のスラブ構造までの施工に関する工程説明図である。まず、アンカーボルト2に鉄骨柱H1の柱脚部を固定し、鉄骨柱H1に鉄骨梁H2等の鉄骨部材を組み立てて鉄骨造骨組を構築する(図7)。鉄骨部材は、予め工場において組立可能な状態に製造された後施工現場に搬入される。そのため、鉄骨造骨組の組立作業はクレーン等を使用して短時間で行うことができる。   After constructing substructures such as underground beam structure and soil structure, superstructures such as wall structure, slab structure and rooftop structure are constructed. 7-10 is process explanatory drawing regarding the construction to the slab structure of the 2nd floor. First, the column base portion of the steel column H1 is fixed to the anchor bolt 2, and a steel frame such as a steel beam H2 is assembled to the steel column H1 to construct a steel frame (FIG. 7). The steel frame member is manufactured in advance in a state that can be assembled in a factory, and then carried into a construction site. Therefore, the assembling work of the steel frame can be performed in a short time using a crane or the like.

次に、地中梁構造に立設された壁用鉄筋9の両側に、地中梁用型枠Bと同様に型枠ユニットパネル5を積み上げて連結部材7及び保持部材8により組み立てて、1階部分の壁用型枠Cを地中梁用型枠Bに連設して形成する。形成された壁用型枠Cは、鉄骨柱H1に沿うように立設される。また、鉄骨造骨組の2階のスラブ部分において、鉄骨梁H2の上面に波形鋼板12を隙間なく架設して、溶接により鉄骨梁H2に固定する。その際に、鉄骨造骨組の屋上部分にも2階部分と同様に波形鋼板を隙間なく架設して溶接により固定しておくと、作業効率が向上する。そして、内側の壁用型枠Cには、波形鋼板12の上部に対応する位置に連通孔13が穿設される(図8)。   Next, the formwork unit panels 5 are stacked on both sides of the wall reinforcing bar 9 erected in the underground beam structure and assembled by the connecting member 7 and the holding member 8 in the same manner as the underground beam formwork B. The floor wall formwork C is formed continuously with the underground beam formwork B. The formed wall form C is erected along the steel column H1. In addition, in the slab portion on the second floor of the steel frame, the corrugated steel plate 12 is installed on the upper surface of the steel beam H2 without any gap, and is fixed to the steel beam H2 by welding. At that time, if the corrugated steel plate is laid on the roof portion of the steel frame as well as the second floor portion and is fixed by welding, the working efficiency is improved. The inner wall formwork C is provided with a communication hole 13 at a position corresponding to the upper portion of the corrugated steel sheet 12 (FIG. 8).

鉄骨梁H2に固定された波形鋼板12の鉄骨梁H2との間の隙間は、充填材14を埋め込んで閉塞し、コンクリートを波形鋼板12の上部に打設した際にコンクリートが漏出しないようにする。波形鋼板12の上部には、波形鋼板12に沿って床用鉄筋15が配筋される。床用鉄筋15は、棒状鉄筋を縦横に格子状に配列して形成されている。床用鉄筋15の周囲には、連通孔13に挿通されたL字状のアンカー鉄筋16の水平方向の端部が重ね継ぎされており、アンカー鉄筋16の垂直方向の端部は、壁用型枠Cの間において下方に向かって延設され、複数段にわたって水平方向に配列されている保持部材8に担持された二対の棒状鉄筋17の間に挟持されて連結されている。こうした鉄筋の連結構造を構成することで、壁構造の鉄筋コンクリート及びスラブ構造の鉄筋コンクリートを高強度で連結することができる(図9)。   The gap between the corrugated steel plate 12 fixed to the steel beam H2 and the steel beam H2 is closed by embedding the filler 14 so that the concrete does not leak when the concrete is placed on the corrugated steel plate 12. . Floor reinforcing bars 15 are arranged along the corrugated steel sheet 12 on the corrugated steel sheet 12. The floor reinforcing bars 15 are formed by arranging bar-shaped reinforcing bars vertically and horizontally in a grid pattern. A horizontal end of an L-shaped anchor rebar 16 inserted through the communication hole 13 is lap-joined around the floor rebar 15, and a vertical end of the anchor rebar 16 is a wall mold. Between the frames C, it extends downward and is sandwiched and connected between two pairs of rod-shaped reinforcing bars 17 carried by holding members 8 arranged in a horizontal direction over a plurality of stages. By constructing such a reinforcing bar connection structure, the reinforced concrete having the wall structure and the reinforced concrete having the slab structure can be connected with high strength (FIG. 9).

1階部分の壁用型枠C及び2階部分の波形鋼板12を組み付けて、壁用鉄筋9及び床用鉄筋15を連結して一体となるように配筋した後、壁用型枠C内にコンクリートを流し込んでいき、壁用型枠C内にコンクリートを隙間なく充填する。1階部分の壁用型枠C内にコンクリートを充填した後、2階部分の波形鋼板12の上にコンクリートを流し込んで、床用鉄筋15が埋設される所定の厚さまでコンクリートを打設する。また、壁構造と2階のスラブ構造との間は、連通孔13を通して連結するようにコンクリートを充填する(図10)。   After assembling the wall formwork C of the first floor part and the corrugated steel plate 12 of the second floor part and connecting the wall reinforcing bar 9 and the floor reinforcing bar 15 so as to be integrated, the inside of the wall formwork C Concrete is poured into the wall, and the concrete is filled into the wall formwork C without any gaps. After the concrete is filled in the wall formwork C of the first floor portion, the concrete is poured onto the corrugated steel plate 12 of the second floor portion, and the concrete is cast to a predetermined thickness where the floor reinforcing bars 15 are embedded. The wall structure and the slab structure on the second floor are filled with concrete so as to be connected through the communication hole 13 (FIG. 10).

以上のように1階部分の壁構造及び2階のスラブ構造について1度にコンクリートを打設した後数日間養生させて2階部分の壁構造及び屋上構造の施工を行う。鉄骨造骨組が既に構築されているので、壁構造及び屋上構造の施工作業にすぐに取りかかることができ、工期を短縮することが可能となる。   As described above, the wall structure of the first floor part and the slab structure of the second floor are placed at once, and then cured for several days to construct the wall structure and the roof structure of the second floor part. Since the steel frame has already been constructed, it is possible to immediately start the construction work of the wall structure and the rooftop structure, and the construction period can be shortened.

図11及び図12は、2階部分の壁構造及び屋上構造までの施工に関する工程説明図である。まず、鉄骨造骨組の屋上部分の高さまで壁用鉄筋9を延設させるとともに壁用型枠Cも壁用鉄筋9の両側に同様の高さまで型枠ユニットパネルを積み上げて形成する。既に鉄骨造骨組の屋上部分においては、2階部分と同時作業で鉄骨梁H2の上面に波形鋼板18を隙間なく架設して、溶接により鉄骨梁H2に固定されている。そして、内側の壁用型枠Cには、波形鋼板18の上部に対応する位置に連通孔19が穿設される。   FIG.11 and FIG.12 is process explanatory drawing regarding the construction to the wall structure and roof structure of a 2nd floor part. First, the wall reinforcing bars 9 are extended to the height of the roof portion of the steel frame, and the wall formwork C is also formed by stacking formwork unit panels on both sides of the wall reinforcing bars 9 to the same height. On the roof part of the steel frame, the corrugated steel plate 18 is installed on the upper surface of the steel beam H2 without any gaps at the same time as the second floor part, and is fixed to the steel beam H2 by welding. The inner wall mold C is provided with a communication hole 19 at a position corresponding to the upper portion of the corrugated steel plate 18.

鉄骨梁H2に固定された波形鋼板18の鉄骨梁H2との間の隙間は、充填材20を埋め込んで閉塞し、コンクリートを波形鋼板18の上部に打設した際にコンクリートが漏出しないようにする。波形鋼板18の上部には、波形鋼板18に沿って屋上用鉄筋21が配筋される。屋上用鉄筋21は、棒状鉄筋を縦横に格子状に配列して形成されている。屋上用鉄筋21の周囲には、連通孔19に挿通されたL字状のアンカー鉄筋22の水平方向の端部が重ね継ぎされており、アンカー鉄筋22の垂直方向の端部は、壁用型枠Cの間において下方に向かって延設され、アンカー鉄筋16と同様に保持部材に連結されている(図11)。   The gap between the corrugated steel plate 18 fixed to the steel beam H2 and the steel beam H2 is closed by embedding the filler 20 so that the concrete does not leak when the concrete is placed on top of the corrugated steel plate 18. . On the top of the corrugated steel plate 18, a roof reinforcing bar 21 is arranged along the corrugated steel plate 18. The roofing reinforcing bar 21 is formed by arranging bar-shaped reinforcing bars vertically and horizontally in a grid pattern. A horizontal end of an L-shaped anchor rebar 22 inserted through the communication hole 19 is lap-joined around the roofing rebar 21, and a vertical end of the anchor rebar 22 is a wall mold. It extends downward between the frames C and is connected to the holding member in the same manner as the anchor reinforcing bars 16 (FIG. 11).

また、屋上構造が壁構造より外方に突出した庇部分では(図11の右側部分)、壁用型枠Cの間に対応する波形鋼板18の箇所に連通孔18aを開口形成する。そして、連通孔18aにL字状のアンカー鉄筋23を挿通して、アンカー鉄筋23の水平方向の端部を屋上用鉄筋21に重ね継ぎし、垂直方向の端部を壁用鉄筋9に重ね継ぎする。こうして、アンカー鉄筋23により壁用鉄筋9及び屋上用鉄筋21を高強度に連結することができる。   Further, in the eaves portion where the roof structure protrudes outward from the wall structure (the right side portion in FIG. 11), a communication hole 18 a is formed at a position of the corrugated steel plate 18 between the wall formwork C. Then, an L-shaped anchor rebar 23 is inserted into the communication hole 18 a, the horizontal end of the anchor rebar 23 is overlapped with the roofing rebar 21, and the vertical end is overlapped with the wall rebar 9. To do. In this manner, the wall reinforcing bar 9 and the roof reinforcing bar 21 can be connected with high strength by the anchor reinforcing bar 23.

波形鋼板18の周端部には、棒状の取付部材24が外方に向かって突出するように支持固定されている。取付部材24の先端部には、パラペット構造を構築するための枠部材25が固定される。   A rod-shaped attachment member 24 is supported and fixed at the peripheral end of the corrugated steel plate 18 so as to protrude outward. A frame member 25 for constructing a parapet structure is fixed to the distal end portion of the attachment member 24.

2階部分の壁用型枠C及び屋上部分の波形鋼板18を組み付けて、壁用鉄筋9及び屋上用鉄筋21を連結して一体となるように配筋した後、壁用型枠C内にコンクリートを流し込んでいき、壁用型枠C内にコンクリートを隙間なく充填する。2階部分の壁用型枠C内にコンクリートを充填した後、屋上部分の波形鋼板18の上にコンクリートを流し込んで、屋上用鉄筋21が埋設される所定の厚さまでコンクリートを打設する。また、壁構造と屋上構造との間は、連通孔18a及び19を通して連結するようにコンクリートを充填する(図12)。   After assembling the wall formwork C on the second floor part and the corrugated steel plate 18 on the rooftop part and connecting the wall rebar 9 and the rooftop rebar 21 so as to be integrated, they are placed in the wall formwork C. The concrete is poured into the wall formwork C without any gaps. After the concrete is filled in the wall formwork C on the second floor, the concrete is poured onto the corrugated steel plate 18 on the rooftop, and the concrete is cast to a predetermined thickness where the rooftop reinforcing bars 21 are embedded. The wall structure and the roof structure are filled with concrete so as to be connected through the communication holes 18a and 19 (FIG. 12).

以上のように、地中梁構造から壁構造、スラブ構造及び屋上構造まで鉄筋が一体的に連結されるように配筋され、コンクリートが壁構造とともにスラブ構造又は屋上構造に一体的に打設されるため、施工後の建築物では鉄筋コンクリート構造が耐久性及び耐震性を十分発揮して建物の強度に関して主体的な役割を果たすようになる。   As described above, the reinforcing bars are arranged so that the reinforcing bars are integrally connected from the underground beam structure to the wall structure, slab structure, and roof structure, and the concrete is integrally placed on the slab structure or roof structure together with the wall structure. For this reason, in the building after construction, the reinforced concrete structure exhibits sufficient durability and earthquake resistance and plays a leading role with respect to the strength of the building.

一方、鉄骨造骨組は、型枠の形成、波形鋼板の固定、上部構造の鉄筋の配筋、コンクリートの打設といった作業を行う上で仮設構造としての役割を果たすとともに、施工後はスラブ構造及び屋上構造を支持して補助的な役割を果たすようになる。   On the other hand, the steel frame has a role as a temporary structure in performing the work such as forming the formwork, fixing the corrugated steel sheet, arranging the reinforcing bar of the superstructure, and placing the concrete, and after the construction, the slab structure and Supports the rooftop structure and plays an auxiliary role.

A 地中梁用鉄筋
B 地中梁用型枠
C 壁用型枠
H1 鉄骨柱
H2 鉄骨梁
1 基礎コンクリート
2 アンカーボルト
3 主筋
4 助筋
5 型枠ユニットパネル
6 ガイド部材
7 連結部材
8 保持部材
9 壁用鉄筋
10 断熱材
11 土間用鉄筋
12 波形鋼板
13 連通孔
14 充填材
15 床用鉄筋
16 アンカー鉄筋
17 棒状鉄筋
18 波形鋼板
19 連通孔
20 充填材
21 屋上用鉄筋
22 アンカー鉄筋
23 アンカー鉄筋
24 取付部材
25 枠部材
A Reinforcement for underground beam B Formwork for underground beam C Formwork for wall H1 Steel column H2 Steel beam 1 Foundation concrete 2 Anchor bolt 3 Main reinforcement 4 Reinforcement 5 Formwork unit panel 6 Guide member 7 Connecting member 8 Holding member 9 Wall rebar
10 Insulation
11 Reinforcing bar
12 Corrugated steel sheet
13 Communication hole
14 Filler
15 Reinforcing bar
16 Anchor rebar
17 Bar rebar
18 Corrugated steel sheet
19 Communication hole
20 Filler
21 Roof reinforcement
22 Anchor reinforcement
23 Anchor rebar
24 Mounting member
25 Frame member

Claims (4)

鉄骨部材を固定するアンカーボルトに支持されるように配筋された地中梁用鉄筋に壁用鉄筋を立設するように固定するとともに断熱材からなる型枠ユニットパネルにより地中梁用鉄筋の両側に形成された地中梁用型枠内にコンクリートを打設して地中梁構造を施工し、前記アンカーボルトに鉄骨部材を固定して鉄骨造骨組を構築し、立設された前記壁用鉄筋の両側に前記型枠ユニットパネルにより地中梁用型枠に連設して壁用型枠を形成し、前記鉄骨造骨組のスラブ部分に波形鋼板を敷設するとともに当該波型鋼板の上面に沿うように床用鉄筋を配筋して前記壁用鉄筋と連結し、前記壁用型枠内にコンクリートを打設するとともに前記床用鉄筋が埋設されるように前記波形鋼板上部にコンクリートを打設して壁構造及びスラブ構造を一体的に施工することを特徴とする鉄筋コンクリート造建築物の構築方法。   Fix the wall rebars upright to the underground beam rebars that are supported by the anchor bolts that fix the steel members, and use the formwork unit panel made of heat insulating material to The concrete wall is constructed by placing concrete in the underground beam formwork formed on both sides, constructing a steel frame by fixing steel members to the anchor bolts, and standing the wall A wall formwork is formed on both sides of the reinforcing steel bar by using the formwork unit panel to form a wall formwork, and a corrugated steel sheet is laid on the slab portion of the steel frame and the top surface of the corrugated steel sheet. The floor reinforcing bars are arranged along the wall and connected to the wall reinforcing bars, and the concrete is placed in the wall formwork and the floor reinforcing bars are embedded so that the concrete is placed on the corrugated steel plate. Placing the wall structure and slab structure together How to build a reinforced concrete building, characterized in that the factory. 前記鉄骨造骨組の屋上部分に波形鋼板を敷設するとともに当該波型鋼板の上面に沿うように屋上用鉄筋を配筋して前記壁用鉄筋と連結し、階下の前記壁構造とともにコンクリートを打設して屋上構造を一体的に施工することを特徴とする請求項1に記載の鉄筋コンクリート造建築物の構築方法。   Corrugated steel sheets are laid on the roof part of the steel frame, and roof reinforcing bars are arranged along the top surface of the corrugated steel sheets to connect with the wall reinforcing bars, and concrete is placed together with the wall structure below the floor. Then, the construction method of the reinforced concrete structure according to claim 1, wherein the rooftop structure is integrally constructed. 屋上部分に敷設された前記波形鋼板にパラペット構造を構成する部材を支持固定することを特徴とする請求項2に記載の鉄筋コンクリート造建築物の構築方法。   The method for constructing a reinforced concrete structure according to claim 2, wherein a member constituting a parapet structure is supported and fixed on the corrugated steel sheet laid on a rooftop portion. 前記床用鉄筋と前記壁用鉄筋との間をL字状のアンカー筋により緊結することを特徴とする請求項1から3のいずれかに記載の鉄筋コンクリート造建築物の構築方法。   The method for constructing a reinforced concrete structure according to any one of claims 1 to 3, wherein the floor reinforcing bar and the wall reinforcing bar are fastened by an L-shaped anchor bar.
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