JP2014109152A - Beam member and floor structure - Google Patents

Beam member and floor structure Download PDF

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JP2014109152A
JP2014109152A JP2012264812A JP2012264812A JP2014109152A JP 2014109152 A JP2014109152 A JP 2014109152A JP 2012264812 A JP2012264812 A JP 2012264812A JP 2012264812 A JP2012264812 A JP 2012264812A JP 2014109152 A JP2014109152 A JP 2014109152A
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floor
beam member
concrete
bottom part
precast concrete
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JP6082580B2 (en
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Yuki Kaizuka
祐樹 貝塚
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Taisei Corp
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Taisei Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a beam member that reduces construction costs and is made lightweight while preventing a sectional defect.SOLUTION: A beam member 10 includes a precast concrete-made bottom part 11 which is made by half precasting, and a side form 12 which is provided at the bottom part 11 and covers a side face of a binder 4. A cross rail 22 which extends substantially horizontally is provided at an upper end edge of the side form 12. Concrete is cast on the bottom part 11. The prevent invention can make the beam member 10 lightweight since only the bottom part 11 is made of precast concrete. Further, a sectional defect of the binder 4 can be prevented since an end edge of a floor member 50 never enters a structure cross section, and construction costs are reducible since the need for a conventional increasing section is eliminated.

Description

本発明は、梁部材およびこの梁部材を用いて構築される床構造に関する。   The present invention relates to a beam member and a floor structure constructed using the beam member.

従来より、建物の施工現場では、床や梁のコンクリート型枠を支持するため、型枠支保工が設けられる。しかしながら、型枠支保工の組立てや解体に多大な費用がかかるため、プレキャストコンクリート部材を用いることで、型枠支保工を極力少なくすることが行われている。   Conventionally, in the construction site of a building, in order to support the concrete formwork of a floor or a beam, a formwork support work is provided. However, since much cost is required for assembling and dismantling the formwork support work, the use of a precast concrete member has made it possible to minimize the formwork support work.

例えば、柱間あるいは梁間にプレキャストコンクリート造の梁部材(以下、PCa梁と呼ぶ)を架設する構造が知られている(特許文献1参照)。
具体的には、この梁部材は、鉄筋コンクリート造のコンクリート平板と、このコンクリート平板築したPCa梁に、側面型枠を固定し、PCa梁の上部にコンクリートを打設したプレキャスト部材である。このような梁部材によれば、プレキャスト部材の軽量化により、施工現場での施工性を向上できる。
For example, a structure in which a precast concrete beam member (hereinafter referred to as a PCa beam) is installed between columns or between beams is known (see Patent Document 1).
Specifically, the beam member is a reinforced concrete flat plate and a precast member in which a side mold is fixed to the PCa beam built on the concrete plate and concrete is placed on the PCa beam. According to such a beam member, the workability at the construction site can be improved by reducing the weight of the precast member.

ところで、この場合、床捨て型枠の端縁をPCa梁の側縁に載せて、デッキプレートなどの床捨て型枠をPCa梁に支持させる必要がある。
しかしながら、特許文献1に示すような構造では、床捨て型枠の端縁がPCa梁の構造体断面まで到達することになり、梁の断面欠損となる、という問題があった。そこで、この問題を解決するため、以下のような構造が提案されている。
By the way, in this case, it is necessary to place the edge of the floor discard form on the side edge of the PCa beam and to support the floor discard form such as a deck plate on the PCa beam.
However, in the structure as shown in Patent Document 1, there is a problem that the end edge of the floor formwork reaches the structure cross section of the PCa beam, resulting in a cross-sectional defect of the beam. In order to solve this problem, the following structure has been proposed.

例えば、PCa梁の側面にブラケットをボルトで仮固定して、このブラケットに床捨て型枠の端縁を載せて支持させる方法が提案されている(特許文献2参照)。
また、断面略U字形状のPCa梁(ハーフPCa梁)を用いて、このPCa梁の側壁部をふかして非構造体である増打ち部を設け、この増打ち部に床捨て型枠の端縁を載せる方法が提案されている(特許文献3参照)。
For example, a method has been proposed in which a bracket is temporarily fixed to a side surface of a PCa beam with a bolt, and an end edge of a floor disposal formwork is placed on the bracket and supported (see Patent Document 2).
Further, a PCa beam having a substantially U-shaped cross section (half PCa beam) is used to provide a non-structural additional striking portion by covering the side wall portion of the PCa beam. A method of placing an edge has been proposed (see Patent Document 3).

このようにすれば、床捨て型枠の端縁をブラケットや増打ち部で支持するので、PCa梁の構造体部分の断面欠損を回避できる。   In this way, since the end edge of the floor formwork is supported by the bracket or the additional hitting portion, it is possible to avoid a cross-sectional defect of the PCa beam structure.

特開平9−78690号公報Japanese Patent Laid-Open No. 9-78690 特開2001−288893号公報JP 2001-288893 A 特開平6−341167号公報JP-A-6-341167

しかしながら、特許文献2、3のようなPCa梁では、ブラケットを取り付けたり増打ち部を設けたりするために、PCa梁の側壁部もプレキャストコンクリートで構築しておく必要がある。よって、PCa梁の重量が大きくなり、PCa梁の運搬や取付けに大型のクレーンが必要となる、という問題があった。
また、PCa梁の側壁部に増打ち部を設けた場合には、PCa梁の重量が大きくなるだけでなく、増打ち部を構築するための余分な鉄筋材やコンクリートが必要となり、施工費が増大する、という問題があった。
However, in the PCa beam as in Patent Documents 2 and 3, in order to attach a bracket or provide an increased hitting portion, the side wall portion of the PCa beam also needs to be constructed of precast concrete. Therefore, there is a problem that the weight of the PCa beam is increased, and a large crane is required for transporting and mounting the PCa beam.
In addition, when the increased hitting portion is provided on the side wall portion of the PCa beam, not only the weight of the PCa beam is increased, but also an extra reinforcing material and concrete for constructing the increased hitting portion are required, and the construction cost is increased. There was a problem of increasing.

本発明は、断面欠損を防止しつつ、施工費の低減および軽量化を実現できる梁部材および床構造を提供することを目的とする。   An object of this invention is to provide the beam member and floor structure which can implement | achieve reduction of construction cost and weight reduction, preventing a cross-sectional defect | deletion.

請求項1に記載の梁部材(例えば、後述の梁部材10)は、ハーフプレキャスト造の梁部材であって、軸方向の両端面に凹部(例えば、後述の凹部17)が形成されたプレキャストコンクリート造の底部(例えば、後述の底部11)と、当該底部に設けられて前記梁の側面を覆う側型枠(例えば、後述の側型枠12)と、を備え、前記側型枠の上端縁には、略水平に延びる横桟(例えば、後述の横桟22)が設けられ、前記底部の上にコンクリートが打設されることを特徴とする。   The beam member according to claim 1 (for example, a beam member 10 to be described later) is a half-precast beam member, and precast concrete having recesses (for example, a recess 17 to be described later) formed on both end faces in the axial direction. A bottom part (for example, a bottom part 11 described later) and a side mold (for example, a side mold 12 described later) provided on the bottom and covering a side surface of the beam, and an upper edge of the side mold Is provided with a horizontal rail (for example, a horizontal rail 22 described later) extending substantially horizontally, and concrete is placed on the bottom.

請求項2に記載の床構造は、上述の梁部材と、当該梁部材に架設されて床(例えば、後述の床5)を構築するための床部材(例えば、後述の床部材50)と、を備える床構造であって、前記梁部材の下側の梁主筋は、前記底部の端面から突出しておらず、前記床部材の端縁は、前記梁部材の側型枠の横桟に載せられて、前記梁部材に支持されることを特徴とする。   The floor structure according to claim 2 includes the above-described beam member, and a floor member (for example, a floor member 50 described later) that is installed on the beam member to construct a floor (for example, a floor 5 described later), The beam main bar on the lower side of the beam member does not protrude from the end surface of the bottom portion, and the edge of the floor member is placed on a horizontal beam of the side frame of the beam member. And supported by the beam member.

請求項3に記載の床構造は、前記床部材は、前記床の底面を覆う捨て型枠(例えば、後述の鋼板51)、プレキャストコンクリート造の平板状部材、およびデッキプレートのうちのいずれか1つと、鉄筋材(例えば、後述の鉄筋材52)と、を備えることを特徴とする。   The floor structure according to claim 3, wherein the floor member is any one of a discarded frame (for example, a steel plate 51 described later), a precast concrete flat plate member, and a deck plate that covers the bottom surface of the floor. And a reinforcing bar material (for example, a reinforcing bar material 52 described later).

この発明によれば、梁部材および床部材を用いて床構造を構築したので、梁や床の型枠を支持する型枠支保工を極力少なくでき、工期を短縮できる。
また、梁部材を底部と側型枠とを含んで構成し、底部のみをプレキャストコンクリート造としたので、梁部材を軽量化できる。よって、従来のような梁部材の運搬や取付けのために大型のクレーンを用いる必要がなくなる。
また、床部材の捨て型枠の端縁を梁部材の側型枠の横桟に載せて、床部材を梁部材に支持させたので、捨て型枠の端縁が構造体断面に入り込まないから、梁の断面欠損を防止できるうえに、従来のような増打ち部が不要となるので、施工費を低減できる。
また、底部の軸方向の両端面に凹部を設けたので、コンクリートを打設して底部を他の梁や柱と一体化した際に、この凹部がシャーコッターとして機能し、地震時のせん断力に十分に抵抗できる。
According to the present invention, since the floor structure is constructed using the beam member and the floor member, the formwork supporting work for supporting the formwork of the beam and the floor can be reduced as much as possible, and the construction period can be shortened.
In addition, since the beam member is configured to include the bottom and the side mold and only the bottom is made of precast concrete, the beam member can be reduced in weight. Therefore, it is not necessary to use a large crane for transporting and mounting the beam member as in the prior art.
In addition, since the edge of the discarded form frame of the floor member is placed on the horizontal rail of the side form of the beam member and the floor member is supported by the beam member, the edge of the discarded form frame does not enter the cross section of the structure. In addition to preventing the cross-sectional defect of the beam, it is possible to reduce the construction cost because the additional striking part as in the prior art becomes unnecessary.
In addition, since the recesses are provided on both axial end surfaces of the bottom, when the concrete is cast and the bottom is integrated with other beams and columns, this recess functions as a shacotter and shear force during an earthquake. Can resist enough.

本発明によれば、梁部材および床部材を用いて床構造を構築したので、梁や床の型枠を支持する型枠支保工を極力少なくでき、工期を短縮できる。また、梁部材を底部と側型枠とを含んで構成し、底部のみをプレキャストコンクリート造としたので、梁部材を軽量化できる。よって、従来のような梁部材の運搬や取付けのために大型のクレーンを用いる必要がなくなる。また、床部材の捨て型枠の端縁を梁部材の側型枠の横桟に載せて、床部材を梁部材に支持させたので、捨て型枠の端縁が構造体断面に入り込まないから、梁の断面欠損を防止できるうえに、従来のような増打ち部が不要となるので、施工費を低減できる。また、底部の軸方向の両端面に凹部を設けたので、コンクリートを打設して底部を他の梁や柱と一体化した際に、この凹部がシャーコッターとして機能し、地震時のせん断力に十分に抵抗できる。   According to the present invention, since the floor structure is constructed using the beam member and the floor member, the formwork supporting work for supporting the formwork of the beam and the floor can be reduced as much as possible, and the construction period can be shortened. In addition, since the beam member is configured to include the bottom and the side mold and only the bottom is made of precast concrete, the beam member can be reduced in weight. Therefore, it is not necessary to use a large crane for transporting and mounting the beam member as in the prior art. In addition, since the edge of the discarded form frame of the floor member is placed on the horizontal rail of the side form of the beam member and the floor member is supported by the beam member, the edge of the discarded form frame does not enter the cross section of the structure. In addition to preventing the cross-sectional defect of the beam, it is possible to reduce the construction cost because the additional striking part as in the prior art becomes unnecessary. In addition, since the recesses are provided on both axial end surfaces of the bottom, when the concrete is cast and the bottom is integrated with other beams and columns, this recess functions as a shacotter and shear force during an earthquake. Can resist enough.

本発明の一実施形態に係る床構造の見上げ図である。It is a top view of the floor structure concerning one embodiment of the present invention. 前記実施形態に係る床構造の小梁部分の断面図である。It is sectional drawing of the small beam part of the floor structure which concerns on the said embodiment. 図2のA−A断面図である。It is AA sectional drawing of FIG.

以下、本発明の一実施形態について、図面を参照しながら説明する。
図1は、本発明の一実施形態に係る床構造1の見上げ図である。
床構造1は、柱2同士の間に架設された大梁3と、この大梁3同士の間に架設された小梁4と、大梁3と小梁4との間に架設された床5と、を備える。
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a top view of a floor structure 1 according to an embodiment of the present invention.
The floor structure 1 includes a large beam 3 laid between pillars 2, a small beam 4 laid between the large beams 3, a floor 5 laid between the large beam 3 and the small beam 4, Is provided.

図2は、床構造の小梁部分の断面図である。図3は、図2のA−A断面図である。
小梁4は、ハーフプレキャスト造の梁部材10を用いて構築されている。この梁部材10は、プレキャストコンクリート造の底部11と、この底部11に設けられて小梁4の側面を覆う側型枠12と、を備えている。
また、この梁部材10は、上側の梁主筋13と、下側の梁主筋14と、これら上下の梁主筋13、14を囲むように所定間隔おきに設けられた矩形枠状のあばら筋(せん断補強筋)15と、を備えている。このあばら筋15の端部フックは、下側に配置されている。
FIG. 2 is a cross-sectional view of the beam portion of the floor structure. FIG. 3 is a cross-sectional view taken along the line AA of FIG.
The small beam 4 is constructed using a beam member 10 made of half-precast. The beam member 10 includes a bottom 11 made of precast concrete, and a side mold 12 provided on the bottom 11 and covering a side surface of the small beam 4.
Further, the beam member 10 includes an upper beam main bar 13, a lower beam main bar 14, and rectangular frame-shaped stirrups (shears) provided at predetermined intervals so as to surround the upper and lower beam main bars 13, 14. Reinforcing bars) 15. The end hook of the stirrup 15 is disposed on the lower side.

底部11には、下側の梁主筋14およびあばら筋15の下部が打ち込まれており、さらに、梁幅方向に延びるセパレータ16が打ち込まれている。これにより、あばら筋15の端部フックも底部11に打ち込まれている。   The bottom part 11 is driven with the lower part of the lower beam main bar 14 and the stirrup bar 15, and is further driven with a separator 16 extending in the beam width direction. As a result, the end hooks of the ribs 15 are also driven into the bottom 11.

また、下側の梁主筋14の端部は、上方に折り曲げられており、下側の梁主筋14の余長部はプレキャストコンクリート造の底部11内に納まっている。よって、下側の梁主筋14は、底部11の軸方向両端面から突出していない。
下側の梁主筋14が底部11の両端面から突出していない理由は、以下の通りである。すなわち、小梁4は、地震発生時に生じる水平荷重に対してせん断抵抗する部材ではないため、小梁4の端部を大梁3にピン接合すればよく、小梁4の下側の梁主筋14を大梁3に定着させる必要がないからである。
Moreover, the edge part of the lower beam main reinforcement 14 is bend | folded upwards, and the extra length part of the lower beam main reinforcement 14 is stored in the bottom part 11 of a precast concrete structure. Therefore, the lower beam main bar 14 does not protrude from both axial end surfaces of the bottom 11.
The reason why the lower beam main reinforcement 14 does not protrude from both end faces of the bottom 11 is as follows. That is, the small beam 4 is not a member that resists shearing against a horizontal load generated when an earthquake occurs. Therefore, the end of the small beam 4 may be pin-joined to the large beam 3, and the beam main bar 14 below the small beam 4. This is because it is not necessary to fix to the beam 3.

また、この底部11の軸方向両端面には、上下2段に凹部17が形成されている。この凹部17は、図3に示すように、底部11の底面よりも上側に設けられた凹みである。
なお、これに限らず、凹部17を底部11の底面に到達させて、梁部材10の運搬や取付け時の角部の欠損を防止してもよい。
さらに、底部11には、吊上げフック18が打ち込まれており、この吊上げフック18の上部は、底部11の上面に露出している。
Further, concave portions 17 are formed in two upper and lower stages on both axial end surfaces of the bottom portion 11. As shown in FIG. 3, the recess 17 is a recess provided above the bottom surface of the bottom 11.
In addition, not only this but the recessed part 17 may be made to reach the bottom face of the bottom part 11, and the loss | missing of the corner | angular part at the time of conveyance and attachment of the beam member 10 may be prevented.
Further, a lifting hook 18 is driven into the bottom portion 11, and an upper portion of the lifting hook 18 is exposed on the upper surface of the bottom portion 11.

側型枠12は、小梁4の側面を覆う一対の木製のパネル材20と、これら一対のパネル材20の下部を底部11に固定する固定機構30と、一対のパネル材20の上部を互いに連結する連結機構40と、を備える。   The side formwork 12 includes a pair of wooden panel members 20 that cover the side surfaces of the beam 4, a fixing mechanism 30 that fixes a lower portion of the pair of panel members 20 to the bottom 11, and an upper portion of the pair of panel members 20. A coupling mechanism 40 for coupling.

パネル材20は、板材21と、この板材21の上下端に設けられて略水平方向に延びる横桟22と、板材21に水平方向に所定間隔おきに設けられて略鉛直方向に延びる縦桟23と、を備える。   The panel material 20 includes a plate material 21, a horizontal beam 22 provided at the upper and lower ends of the plate material 21 and extending in a substantially horizontal direction, and a vertical beam 23 provided in the plate material 21 at predetermined intervals in the horizontal direction and extending in a substantially vertical direction. And comprising.

固定機構30は、パネル材20の板材21の外側に設けられて底部11の軸方向に沿って略水平に延びる長尺材としての角パイプ31と、底部11のセパレータ16に連結されたPコン32と、このPコン32に連結されて角パイプ31を板材21に締め付けるフォームタイ(登録商標)33と、を備える。すなわち、フォームタイ33は、Pコン32およびセパレータ16を介して、底部11に連結されていることになる。   The fixing mechanism 30 is provided on the outside of the plate member 21 of the panel member 20, and is connected to a square pipe 31 as a long member extending substantially horizontally along the axial direction of the bottom portion 11, and a P-component connected to the separator 16 of the bottom portion 11 32 and a foam tie (registered trademark) 33 that is connected to the P-con 32 and fastens the square pipe 31 to the plate member 21. That is, the foam tie 33 is connected to the bottom 11 via the P-con 32 and the separator 16.

連結機構40は、パネル材20の縦桟23の外側に設けられて略水平に延びる単管41と、板材21の内側に設けられたPコン42と、Pコン42同士を連結するセパレータ43と、Pコン42に連結されて単管41を板材21に締め付けるフォームタイ44と、を備える。   The connection mechanism 40 includes a single pipe 41 provided outside the vertical rail 23 of the panel material 20 and extending substantially horizontally, a P-con 42 provided inside the plate member 21, and a separator 43 that connects the P-con 42 to each other. And a foam tie 44 that is connected to the P-con 42 and fastens the single tube 41 to the plate 21.

床5は、所定幅の床部材50を複数用いて構築されている。すなわち、床部材50は、大梁3と小梁4との間に複数並んで架設されている(図1参照)。各床部材50は、床5の底面を覆う捨て型枠としての鋼板51と、この鋼板51に一体に設けられた鉄筋材52と、を備える。
鉄筋材52は、上側主筋53と、鋼板51に設けられて上側主筋53を支持する吊材54と、上側主筋の直下に設けられた下側主筋55と、上側主筋53と下側主筋55とを連結するラチス材56と、を備える。
The floor 5 is constructed using a plurality of floor members 50 having a predetermined width. That is, a plurality of floor members 50 are laid between the large beam 3 and the small beam 4 (see FIG. 1). Each floor member 50 includes a steel plate 51 that serves as a discarded mold that covers the bottom surface of the floor 5, and a reinforcing bar member 52 that is provided integrally with the steel plate 51.
The reinforcing bar member 52 includes an upper main bar 53, a suspension member 54 provided on the steel plate 51 to support the upper main bar 53, a lower main bar 55 provided immediately below the upper main bar, an upper main bar 53 and a lower main bar 55. And a lattice material 56 for connecting the two.

この床部材50の鋼板51の端縁は、側型枠12の上側の横桟22に載せられて支持され、この状態で、釘57で横桟22に固定されている。   The edge of the steel plate 51 of the floor member 50 is placed on and supported by the horizontal rail 22 on the upper side of the side mold frame 12, and in this state, is fixed to the horizontal rail 22 with a nail 57.

小梁4および床5は、以上の梁部材10および床部材50を用いて、以下の手順で構築される。
まず、梁部材10に上側の梁主筋13を配筋していない状態で、吊上げフック18に図示しないワイヤーを連結してクレーンで吊り上げて、梁部材10を大梁3同士の間に架設する。
次に、大梁3と梁部材10との間に床部材50を架設する。このとき、床部材50の鋼板51の端縁を側型枠12の上側の横桟22に載せて、釘57で固定しておく。
次に、上側の梁主筋13を配筋し、図2中破線で示す高さまでコンクリートを打設する。これにより、底部11の上にコンクリートが打設されて、梁部材10が大梁3に一体化される。
コンクリートの養生期間が経過した後、側型枠12を解体する。ここで、側型枠12を解体しても、鋼板51は鉄筋材52を介してコンクリート躯体に支持されるため、鋼板51は落下しない。
The small beam 4 and the floor 5 are constructed by the following procedure using the beam member 10 and the floor member 50 described above.
First, in a state where the upper beam main bar 13 is not arranged on the beam member 10, a wire (not shown) is connected to the lifting hook 18 and lifted by a crane, and the beam member 10 is installed between the large beams 3.
Next, the floor member 50 is installed between the large beam 3 and the beam member 10. At this time, the edge of the steel plate 51 of the floor member 50 is placed on the horizontal rail 22 on the upper side of the side mold frame 12 and fixed with nails 57.
Next, the upper beam main bar 13 is arranged, and concrete is placed up to a height indicated by a broken line in FIG. As a result, concrete is placed on the bottom 11 and the beam member 10 is integrated with the large beam 3.
After the concrete curing period has elapsed, the side mold 12 is disassembled. Here, even if the side mold 12 is disassembled, the steel plate 51 does not fall because the steel plate 51 is supported by the concrete frame via the reinforcing bars 52.

本実施形態によれば、以下のような効果がある。
(1)梁部材10および床部材50を用いて床構造1を構築したので、小梁4や床5の型枠を支持する型枠支保工を極力少なくでき、工期を短縮できる。
また、梁部材10を底部11と側型枠12とを含んで構成し、底部11のみをプレキャストコンクリート造としたので、梁部材10を軽量化できる。よって、従来のような梁部材の運搬や取付けのために大型のクレーンを用いる必要がなくなる。
また、床部材50の鋼板51の端縁を梁部材10の側型枠12の横桟22に載せて、床部材50を梁部材10に支持させたので、床部材50の端縁が構造体断面に入り込まないから、小梁4の断面欠損を防止できるうえに、従来のような増打ち部が不要となるので、施工費を低減できる。
また、底部11の軸方向の両端面に凹部17を設けたので、コンクリートを打設して底部11を大梁3と一体化した際に、この凹部17がシャーコッターとして機能して、底部11と大梁3とが係合し、地震時のせん断力に十分に抵抗できる。
According to this embodiment, there are the following effects.
(1) Since the floor structure 1 is constructed using the beam member 10 and the floor member 50, the formwork supporting work for supporting the formwork of the small beam 4 and the floor 5 can be reduced as much as possible, and the construction period can be shortened.
In addition, since the beam member 10 includes the bottom portion 11 and the side mold 12 and only the bottom portion 11 is made of precast concrete, the beam member 10 can be reduced in weight. Therefore, it is not necessary to use a large crane for transporting and mounting the beam member as in the prior art.
Further, since the edge of the steel plate 51 of the floor member 50 is placed on the horizontal rail 22 of the side mold 12 of the beam member 10 and the floor member 50 is supported by the beam member 10, the edge of the floor member 50 is a structure. Since it does not enter the cross section, it is possible to prevent the cross section of the small beam 4 from being lost and to eliminate the need for an additional hitting portion as in the prior art, thereby reducing construction costs.
Further, since the concave portions 17 are provided on both end surfaces of the bottom portion 11 in the axial direction, when the concrete is cast and the bottom portion 11 is integrated with the large beam 3, the concave portion 17 functions as a shacotter. Engage with the girder 3 to sufficiently resist the shear force during an earthquake.

(2)あばら筋の端部フックを下側に配置して、予め底部11に打ち込んだので、上側の梁主筋13の配筋作業時に、端部フックが配筋作業の障害になるのを防止できる。   (2) Since the end hook of the stirrup is placed on the lower side and driven into the bottom 11 in advance, the end hook is prevented from obstructing the bar arrangement when the upper beam main bar 13 is arranged. it can.

(3)固定機構30により一対のパネル材20の下部を底部11に固定するとともに、連結機構40により一対のパネル材20の上部を互いに連結した。よって、後打ちコンクリートによりパネル材20に作用する側圧が大きくなっても、側型枠12の孕みだしを防止できる。   (3) While fixing the lower part of a pair of panel material 20 to the bottom part 11 with the fixing mechanism 30, the connection mechanism 40 connected the upper part of a pair of panel material 20 mutually. Therefore, even if the side pressure acting on the panel material 20 is increased by the post-cast concrete, it is possible to prevent the side mold 12 from being squeezed out.

なお、本発明は前記実施形態に限定されるものではなく、本発明の目的を達成できる範囲での変形、改良等は本発明に含まれるものである。
例えば、本実施形態では、小梁4に本発明を適用して梁部材10としたが、これに限らず、大梁3に本発明を適用してもよい。
また、本実施形態では、捨て型枠として、鋼板51を用いたが、これに限らず、プレキャストコンクリート造の平板状部材や、デッキプレートを用いてもよい。
It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.
For example, in the present embodiment, the present invention is applied to the small beam 4 to form the beam member 10, but the present invention is not limited thereto, and the present invention may be applied to the large beam 3.
Moreover, in this embodiment, although the steel plate 51 was used as a discarding formwork, it is not restricted to this, You may use the flat member made from precast concrete, or a deck plate.

1…床構造
2…柱
3…大梁
4…小梁
5…床
10…梁部材
11…底部
12…側型枠
13…上側の梁主筋
14…下側の梁主筋
15…あばら筋
16…セパレータ
17…凹部
18…吊上げフック
20…パネル材
21…板材
22…横桟
23…縦桟
30…固定機構
31…角パイプ
32…Pコン
33…フォームタイ
40…連結機構
41…単管
42…Pコン
43…セパレータ
44…フォームタイ
50…床部材
51…鋼板(捨て型枠)
52…鉄筋材
53…上側主筋
54…吊材
55…下側主筋
56…ラチス材
57…釘
DESCRIPTION OF SYMBOLS 1 ... Floor structure 2 ... Pillar 3 ... Large beam 4 ... Small beam 5 ... Floor 10 ... Beam member 11 ... Bottom part 12 ... Side frame 13 ... Upper beam main reinforcement 14 ... Lower beam main reinforcement 15 ... Spiral reinforcement 16 ... Separator 17 ... Recess 18 ... Lifting hook 20 ... Panel material 21 ... Plate material 22 ... Horizontal beam 23 ... Vertical beam 30 ... Fixing mechanism 31 ... Square pipe 32 ... P-con 33 ... Form tie 40 ... Connecting mechanism 41 ... Single pipe 42 ... P-con 43 ... Separator 44 ... Form tie 50 ... Floor member 51 ... Steel plate (discarded formwork)
52 ... Reinforcement material 53 ... Upper main reinforcement 54 ... Suspension material 55 ... Lower main reinforcement 56 ... Lattice material 57 ... Nail

Claims (3)

ハーフプレキャスト造の梁部材であって、
軸方向の両端面に凹部が形成されたプレキャストコンクリート造の底部と、当該底部に設けられて梁の側面を覆う側型枠と、を備え、
前記側型枠の上端縁には、略水平に延びる横桟が設けられ、
前記底部の上にコンクリートが打設されることを特徴とする梁部材。
A half-precast beam member,
A bottom part of a precast concrete structure in which recesses are formed on both end faces in the axial direction, and a side mold provided on the bottom part to cover the side surface of the beam,
A lateral rail extending substantially horizontally is provided at the upper edge of the side mold,
A beam member, wherein concrete is placed on the bottom.
請求項1に記載の梁部材と、当該梁部材に架設されて床を構築するための床部材と、を備える床構造であって、
前記梁部材の下側の梁主筋は、前記底部の端面から突出しておらず、
前記床部材の端縁は、前記梁部材の側型枠の横桟に載せられて、前記梁部材に支持されることを特徴とする床構造。
A floor structure comprising the beam member according to claim 1 and a floor member constructed on the beam member to construct a floor,
The beam main bar below the beam member does not protrude from the end surface of the bottom,
The floor structure is characterized in that an end edge of the floor member is placed on a horizontal rail of a side mold of the beam member and supported by the beam member.
前記床部材は、前記床の底面を覆う捨て型枠として、鋼板、プレキャストコンクリート造の平板状部材、およびデッキプレートのうちのいずれか1つと、鉄筋材とを備えることを特徴とする請求項2に記載の床構造。   The said floor member is provided with any one of a steel plate, a precast concrete flat plate-like member, and a deck plate as a discarded mold that covers the bottom surface of the floor, and a reinforcing bar material. Floor structure as described in.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102011838B1 (en) * 2018-12-11 2019-08-19 주식회사 엔알씨구조연구소 Prefabricated re-bar beam structure with detachable form

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03161643A (en) * 1989-11-20 1991-07-11 Tokyu Constr Co Ltd Prestress partial half pca plate and its slab structure
JPH05179700A (en) * 1991-12-26 1993-07-20 Maeda Corp Jointing method of precast girder to precast beam
JPH0978690A (en) * 1995-09-20 1997-03-25 Hazama Gumi Ltd Precast member

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03161643A (en) * 1989-11-20 1991-07-11 Tokyu Constr Co Ltd Prestress partial half pca plate and its slab structure
JPH05179700A (en) * 1991-12-26 1993-07-20 Maeda Corp Jointing method of precast girder to precast beam
JPH0978690A (en) * 1995-09-20 1997-03-25 Hazama Gumi Ltd Precast member

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102011838B1 (en) * 2018-12-11 2019-08-19 주식회사 엔알씨구조연구소 Prefabricated re-bar beam structure with detachable form

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