JP2003184214A - Slab having reinforced-concrete construction - Google Patents
Slab having reinforced-concrete constructionInfo
- Publication number
- JP2003184214A JP2003184214A JP2001390100A JP2001390100A JP2003184214A JP 2003184214 A JP2003184214 A JP 2003184214A JP 2001390100 A JP2001390100 A JP 2001390100A JP 2001390100 A JP2001390100 A JP 2001390100A JP 2003184214 A JP2003184214 A JP 2003184214A
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- Japan
- Prior art keywords
- slab
- void
- force
- zone
- concrete structure
- 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.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は鉄筋コンクリート構
造のスラブに関するものである。TECHNICAL FIELD The present invention relates to a slab having a reinforced concrete structure.
【０００２】[0002]
【従来の技術】一般に、段差部を有する鉄筋コンクリー
ト構造のスラブにおけるスラブ上端筋の配筋量は、対象
となる一辺における最大の力に対応して決められてい
る。これを鉄筋コンクリート構造のスラブまたはボイド
スラブ２６に適用すると、図６および７に示すように、
リブ２７に発生する力（対象となる一辺における最大の
力）２８に対応したスラブ上端筋２９の配筋量となる。
一方、ボイドスラブ３０が所要の性能を発揮するために
は、ＰＣ板３１と現場打ちコンクリート３２との一体性
が必要となる。このため、図８に示すように、リブ２７
におけるＰＣ板３１と現場打ちコンクリート３２との界
面における力２８が許容値、すなわちリブ１本当たりの
負担できる力３３を上回った場合には、スラブ厚を厚く
していた。2. Description of the Related Art Generally, the amount of reinforcement of the upper end reinforcement of a slab in a slab having a reinforced concrete structure having a step portion is determined in accordance with the maximum force on one target side. Applying this to a slab or void slab 26 of reinforced concrete structure, as shown in FIGS. 6 and 7,
It is the amount of reinforcement of the slab upper end reinforcement 29 corresponding to the force 28 generated on the rib 27 (maximum force on the target side).
On the other hand, in order for the void slab 30 to exhibit the required performance, the PC board 31 and the cast-in-place concrete 32 need to be integrated. Therefore, as shown in FIG.
If the force 28 at the interface between the PC plate 31 and the cast-in-place concrete 32 in 3 above exceeds the allowable value, that is, the force 33 that can be borne by one rib, the slab thickness was increased.
【０００３】[0003]
【発明が解決しようとする課題】しかし、前者の段差部
を有する鉄筋コンクリート構造のスラブまたはボイドス
ラブは、力の負担度の大きいリブ以外への配筋量が必要
量の２〜３倍となっているため、不経済的でかつコンク
リートの充填性が低くなるといった問題があった。また
後者のボイドスラブは、スラブ厚を厚くしなければなら
ないため非経済的であった。However, in the former slab or void slab having a reinforced concrete structure having a stepped portion, the amount of reinforcement to be provided to ribs other than the rib which bears a large amount of force is two to three times the required amount. Therefore, there is a problem that it is uneconomical and the filling property of concrete becomes low. Further, the latter void slab was uneconomical because the slab thickness had to be increased.
【０００４】本発明はこれらの問題に鑑みてなされたも
のであり、その目的は、力の負担度に応じた配筋量また
は経済的なスラブ厚にすることができるスラブを提供す
ることである。The present invention has been made in view of these problems, and an object of the present invention is to provide a slab capable of providing a bar arrangement amount or an economical slab thickness according to the degree of load of force. .
【０００５】[0005]
【課題を解決するための手段】以上の課題を解決する請
求項１の発明の鉄筋コンクリート構造のスラブの要旨
は、梁および壁で周囲を支持されたコンクリート構造の
スラブ本体を、力の大きさに応じて複数のゾーンに区分
し、各ゾーンに作用する力に応じたスラブ上端筋を配筋
したことを特徴とする。またスラブ本体には段差部が形
成されたことを含む。またスラブ本体はプレキャストコ
ンクリート板が隣接して設置されてなることを含む。さ
らにプレキャストコンクリート板にはボイド型枠が設置
されていることを含む。SUMMARY OF THE INVENTION The slab of a reinforced concrete structure according to the invention of claim 1 for solving the above-mentioned problems is as follows: a slab main body of a concrete structure whose periphery is supported by a beam and a wall, It is characterized in that it is divided into a plurality of zones according to the arrangement, and the slab upper end streaks are arranged according to the force acting on each zone. Further, the slab body includes a step portion. Further, the slab body includes that precast concrete boards are installed adjacent to each other. It also includes the installation of void formwork on the precast concrete board.
【０００６】また請求項５の発明の鉄筋コンクリート構
造のスラブの要旨は、梁間に隣接して敷き並べられた、
ボイド型枠が設置されたプレキャストコンクリート板上
に現場打ちコンクリートが打設されてなるスラブ本体
を、作用する力の大きさに応じて複数のゾーンに区分
し、各ゾーンに作用する力に応じてボイド型枠間に形成
されるリブの数またはリブの幅を決定したことを特徴と
する。The gist of the slab having a reinforced concrete structure according to the invention of claim 5 is that the slabs are laid adjacent to each other between the beams.
The slab body, which is made by casting cast-in-place concrete on a precast concrete plate with a void formwork, is divided into multiple zones according to the magnitude of the acting force, and according to the force acting on each zone. The number of ribs formed between the void molds or the width of the ribs is determined.
【０００７】スラブ本体における各ゾーンに作用する力
に応じてスラブ上端筋を配筋したことにより、経済的な
配筋量にすることができる。また各ゾーンに作用する力
に応じてボイド型枠間に形成されるリブの数またはリブ
の幅を決定することにより、経済的な鉄筋コンクリート
構造のスラブを形成することができる。By arranging the slab upper end reinforcement in accordance with the force acting on each zone in the slab body, it is possible to achieve an economical reinforcement amount. Further, by determining the number of ribs or the width of the ribs formed between the void forms according to the force acting on each zone, an economical slab having a reinforced concrete structure can be formed.
【０００８】[0008]
【発明の実施の形態】以下、本発明の鉄筋コンクリート
構造のスラブ（以下スラブという）の実施の形態につい
て説明する。このスラブは現場打ちコンクリート造のス
ラブ、プレキャストコンクリート板、いわゆるハーフプ
レキャストコンクリート板またはフルプレキャストコン
クリート板（以下ハーフＰＣ板またはフルＰＣ板とい
う）によるスラブ、ボイドスラブ、ボイドデッキスラ
ブ、デッキスラブ、プレストレストコンクリートスラ
ブ、プレストレストコンクリートボイドスラブであり、
段差部が有るものまたはないものを含む。また各実施の
形態において同じ構成は同じ符号を付して説明し、異な
った構成にのみ異なった符号を付して説明する。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a reinforced concrete slab (hereinafter referred to as a slab) of the present invention will be described below. This slab is a slab of cast-in-place concrete, precast concrete plate, so-called half precast concrete plate or full precast concrete plate (hereinafter referred to as half PC plate or full PC plate), void slab, void deck slab, deck slab, prestressed concrete slab. , A prestressed concrete void slab,
Including those with or without steps. Further, in each of the embodiments, the same configurations will be described with the same reference numerals, and different configurations will be described with different reference numerals.
【０００９】図１は第１の実施の形態のスラブであるボ
イドスラブ１を示す。このボイドスラブ１は段差部２を
有するものであり、全面にボイド型枠３を設置したハー
フＰＣ板４ａが梁間の両側に敷設され、これらのハーフ
ＰＣ板４ａの間に、一部にボイド型枠３が設置されない
ハーフＰＣ板４ｂが敷設されて下床５が形成され、この
下床５上にスラブ上端筋６が配筋されて形成されてい
る。FIG. 1 shows a void slab 1 which is the slab of the first embodiment. This void slab 1 has a step portion 2, half PC boards 4a having void forms 3 installed on the entire surface are laid on both sides between the beams, and a void form is partially formed between these half PC boards 4a. A half PC board 4b on which 3 is not installed is laid to form a lower floor 5, and a slab upper end streak 6 is arranged on the lower floor 5.
【００１０】このボイドスラブ１は、図示するように、
段差部２周辺に大きな力１６が作用し、この段差部２周
辺と、それ以外の部分との力の負担度合いに大きな差が
生じている。そこで、図２に示すように、段差部２を有
するスラブ１の長辺方向を作用する力１６の大きさに応
じて複数のゾーン、すなわち段差部周辺ゾーン７、段差
部ゾーン８およびこれ以外のゾーン９にそれぞれ区分
し、これらのゾーン７、８、９に作用する最大の力１６
に対応した量のスラブ上端筋６を配筋した。例えば、同
図の（２）に示すように、段差部周辺ゾーン７は他のゾ
ーン８、９に比べて、大きな力１６が作用するため、こ
れに見合った量のスラブ上端筋６を配筋する他、この次
に大きな力１６が作用する段差部ゾーン８には前記ゾー
ン７よりも少ない量のスラブ上端筋６を配筋し、これ以
外のゾーン９は他よりも小さな力が作用するため最も少
ない量のスラブ上端筋６を配筋する。このように、各ゾ
ーン７、８、９に作用する最大の力１６に対応した量の
スラブ上端筋６を配筋することにより、経済的な配筋が
できるとともに、コンクリートの充填性を高めることも
できる。The void slab 1 is, as shown in the figure,
A large force 16 acts on the periphery of the step portion 2, and a large difference occurs in the degree of load of the force between the periphery of the step portion 2 and other portions. Therefore, as shown in FIG. 2, according to the magnitude of the force 16 acting in the long side direction of the slab 1 having the step portion 2, a plurality of zones, that is, the step portion peripheral zone 7, the step portion zone 8 and other zones. The maximum force 16 acting on these zones 7, 8 and 9 is divided into zones 9 respectively.
The upper end muscle 6 of the slab corresponding to the above was arranged. For example, as shown in (2) of the same figure, since a larger force 16 acts on the step portion peripheral zone 7 as compared with the other zones 8 and 9, the slab upper end muscles 6 of an amount commensurate with this are arranged. In addition, since the slab upper end streak 6 having a smaller amount than that of the zone 7 is arranged in the step zone 8 where the next larger force 16 acts, a smaller force than the other zones 9 acts. Arrange the minimum amount of slab upper end reinforcement 6. In this way, by arranging the slab upper end reinforcements 6 in an amount corresponding to the maximum force 16 acting on each zone 7, 8 and 9, economical reinforcement can be achieved and concrete filling property can be improved. You can also
【００１１】図３は第２の実施の形態のボイドスラブ１
０を示す。このボイドスラブ１０は全面にボイド型枠３
を設置したハーフＰＣ板１１が梁間に敷設されて形成さ
れたものであり、下床５の短辺の中央部に大きな力１６
が作用し、この周辺部分における力の負担度合いに大き
な差が生じている。そこで、図示するように、下床５の
短辺を複数のゾーン、すなわち大きな力１６が作用する
ゾーン１２と、これ以外のゾーン１３とに区分し、これ
らのゾーン１２、１３における最大の力１６に対応した
量のスラブ上端筋６を配筋した。したがって、前記と同
じように経済的なスラブ上端筋６の配筋ができるととも
に、コンクリートの充填性を高めることができる。FIG. 3 shows a void slab 1 according to the second embodiment.
Indicates 0. This void slab 10 has a void form 3 over the entire surface.
Is formed by laying between the beams, and a large force 16 is applied to the center of the short side of the lower floor 5.
Acts, and there is a large difference in the degree of load of the force in this peripheral portion. Therefore, as shown in the figure, the short side of the lower floor 5 is divided into a plurality of zones, that is, a zone 12 in which a large force 16 acts and a zone 13 other than this, and the maximum force 16 in these zones 12 and 13 is divided. The upper end muscle 6 of the slab corresponding to the above was arranged. Therefore, similarly to the above, it is possible to economically arrange the slab upper end reinforcements 6 and enhance the filling property of the concrete.
【００１２】また、上記のボイドスラブ１、１０は、い
わゆるフルＰＣ板、ボイドデッキまたは現場打ちコンク
リートで形成することもできるとともに、段差部のない
ボイドスラブをフルＰＣ板、ボイドデッキまたは現場打
ちコンクリートで形成することもできる。The void slabs 1 and 10 described above can be formed of so-called full PC boards, void decks or cast-in-place concrete, and void slabs without steps are formed of full PC boards, void decks or cast-in-place concrete. You can also do it.
【００１３】図４は第３の実施の形態のボイドスラブ１
４を示す。このボイドスラブ１４は、前記と同様に、全
面にボイド型枠３を設置したハーフＰＣ板１５が梁間に
敷設されて形成されたものであり、スラブ本体５の短辺
の中央部に大きな力１６が作用している。この力（一点
鎖線で表した力）１６は、図７に示すようなボイドスラ
ブ（ボイド型枠が等間隔ごとに配置されたハーフＰＣ板
によるボイドスラブ）におけるリブ１本当たりの負担で
きる力３３を上回っている。そこで、図示するように、
スラブ本体５の短辺を複数のゾーン、すなわち大きな力
１６が作用するゾーン１７と、これ以外のゾーン１８と
に区分し、大きな力１６が作用するゾーン１７のボイド
型枠３を分割してリブ１９の数を多くすることにより、
大きな力１６を分散させて負担させたものである。した
がって、スラブ本体５の短辺の中央部に作用する大きな
力１６を複数のリブ１９で分散させて負担させることが
できるので、スラブ厚を厚くする必要がなく、経済的な
ボイドスラブを構築することができる。FIG. 4 shows a void slab 1 according to the third embodiment.
4 is shown. Similar to the above, the void slab 14 is formed by laying a half PC plate 15 having a void form 3 installed on the entire surface between beams, and a large force 16 is applied to the central portion of the short side of the slab body 5. It is working. This force (the force indicated by the alternate long and short dash line) 16 exceeds the force 33 that can be borne by one rib in a void slab (a void slab formed by half PC plates in which void forms are arranged at equal intervals) as shown in FIG. 7. ing. So, as shown in the figure,
The short side of the slab body 5 is divided into a plurality of zones, that is, a zone 17 on which the large force 16 acts and a zone 18 other than this, and the void form 3 of the zone 17 on which the large force 16 acts is divided to form ribs. By increasing the number of 19,
The large force 16 is dispersed and applied. Therefore, since the large force 16 acting on the central portion of the short side of the slab body 5 can be dispersed and burdened by the plurality of ribs 19, it is not necessary to increase the slab thickness, and an economical void slab can be constructed. You can
【００１４】図５は第４の実施の形態のボイドスラブ２
０を示す。このボイドスラブ２０も、前記と同様に、全
面にボイド型枠３を設置したハーフＰＣ板２１が梁間に
敷設されて形成されたものであり、リブ２２の幅を広げ
てリブ１本当たりの負担できる力を大きくしたものであ
る。すなわち、図７に示すようなボイドスラブ（ボイド
型枠が等間隔ごとに配置されたハーフＰＣ板によるボイ
ドスラブ）におけるリブの負担できる力（一点鎖線で表
した力）３４は、スラブ本体５の短辺の中央部に作用す
る大きな力１６を下回っているため、図示するように、
スラブ本体５の短辺を複数のゾーン、すなわち大きな力
１６が作用するゾーン２３と、これ以外のゾーン２４と
に区分し、大きな力１６が作用するゾーン２３のボイド
型枠２５を小さくしてリブ２２の幅を広げてリブ１本当
たりの負担できる力を大きくしたものである。したがっ
て、幅を広げたリブ２２でスラブ本体５の短辺の中央部
に作用する大きな力１６を負担することができるので、
スラブ厚を厚くする必要がなく、経済的なボイドスラブ
を構築することができる。なお、上記のリブ２２の幅を
広げる方法は、上記の他にボイド型枠２５を両側に移動
させて行うこともできる。FIG. 5 shows the void slab 2 of the fourth embodiment.
Indicates 0. Similarly to the above, the void slab 20 is also formed by laying a half PC plate 21 on the entire surface of which the void form 3 is laid between the beams, and the width of the rib 22 can be widened to bear one rib. It is an increase in power. That is, the force (force represented by the one-dot chain line) 34 that can be borne by the ribs in a void slab (a void slab formed by half PC plates in which void forms are arranged at equal intervals) 34 as shown in FIG. Since it is less than the large force 16 acting on the central part of the
The short side of the slab body 5 is divided into a plurality of zones, that is, a zone 23 in which the large force 16 acts and a zone 24 other than this, and the void form frame 25 in the zone 23 in which the large force 16 acts is made small to form a rib. The width of 22 is widened to increase the force that can be applied to each rib. Therefore, the widened rib 22 can bear the large force 16 acting on the central portion of the short side of the slab body 5,
An economical void slab can be constructed without increasing the slab thickness. In addition to the method described above, the method of widening the width of the rib 22 may be performed by moving the void form 25 to both sides.
【００１５】なお、上記第１〜４の実施の形態のスラブ
１、１０、１４、２０の配筋は、ハーフＰＣ板またはフ
ルＰＣ板によるスラブ、ボイドデッキスラブ、デッキス
ラブ、プレストレストコンクリートスラブ、プレストレ
ストコンクリートボイドスラブにも適用することができ
る。The reinforcing bars of the slabs 1, 10, 14 and 20 of the first to fourth embodiments are slabs made of half PC boards or full PC boards, void deck slabs, deck slabs, prestressed concrete slabs, and prestressed slabs. It can also be applied to concrete void slabs.
【００１６】[0016]
【発明の効果】スラブ本体における各ゾーンに作用する
力に応じてスラブ上端筋を配筋したことにより、経済的
な配筋量にすることができる。EFFECTS OF THE INVENTION By arranging the slab upper end reinforcement in accordance with the force acting on each zone in the slab body, it is possible to achieve an economical reinforcement amount.
【００１７】スラブ本体における各ゾーンに作用する力
に応じてボイド型枠間に形成されるリブの数またはリブ
の幅を決定することにより、経済的なボイドスラブを形
成することができる。An economical void slab can be formed by determining the number of ribs or the width of the ribs formed between the void forms according to the force acting on each zone in the slab body.
【図１】第１の実施の形態のボイドスラブの平面図であ
る。FIG. 1 is a plan view of a void slab according to a first embodiment.
【図２】（１）は第１の実施の形態のボイドスラブのス
ラブ本体をゾーンに区分した平面図、（２）は（１）の
ゾーンの配筋量を示す平面図である。FIG. 2 (1) is a plan view in which the slab body of the void slab of the first embodiment is divided into zones, and (2) is a plan view showing the amount of reinforcement in the zone of (1).
【図３】（１）は第２の実施の形態のボイドスラブのス
ラブ本体をゾーンに区分した平面図、（２）は（１）の
ゾーンの配筋量を示す平面図である。FIG. 3 (1) is a plan view in which the slab body of the void slab of the second embodiment is divided into zones, and (2) is a plan view showing the amount of reinforcement in the zone of (1).
【図４】第３の実施の形態のボイドスラブのスラブ本体
の平面図である。FIG. 4 is a plan view of a slab body of a void slab according to a third embodiment.
【図５】第４の実施の形態のボイドスラブのスラブ本体
の平面図である。FIG. 5 is a plan view of a slab body of a void slab according to a fourth embodiment.
【図６】従来の段差部を備えたボイドスラブであり、
（１）はスラブ本体の平面図、（２）はその配筋量を示
す平面図である。FIG. 6 is a conventional void slab having a step,
(1) is a plan view of the slab body, and (2) is a plan view showing the amount of reinforcement.
【図７】従来のボイドスラブであり、（１）はボイド型
枠を等間隔に設置したハーフＰＣ板によるスラブ本体の
平面図、（２）はその配筋量を示す平面図である。FIG. 7 is a conventional void slab, (1) is a plan view of a slab main body made of a half PC plate in which void forms are installed at equal intervals, and (2) is a plan view showing the amount of reinforcement.
【図８】ボイド型枠を等間隔に設置したハーフＰＣ板で
形成されたボイドスラブにおけるスラブ本体の平面図で
ある。FIG. 8 is a plan view of a slab main body in a void slab formed of half PC plates in which void molds are installed at equal intervals.
１、１０、１４、２０、２６、３０ ボイドスラブ ２ 段差部 ３、２５ ボイド型枠 ４、１１、１５、２１、３１ ハーフＰＣ板 ５ スラブ本体 ６、２９ スラブ上端筋 ７ 段差部周辺ゾーン ８ 段差部ゾーン ９ これ以外のゾーン １２、１３、１７、１８、２３、２４ ゾーン １６、２８ 大きな力 １９、２２、２７ リブ ３２ 現場打ちコンクリート ３３ リブ１本当たりの負担できる力 1, 10, 14, 20, 26, 30 Void slab 2 steps 3,25 void formwork 4, 11, 15, 21, 31 Half PC board 5 slab body 6,29 slab upper end streak 7 Step surrounding area 8 Step zone 9 Other zones 12, 13, 17, 18, 23, 24 zones 16, 28 great power 19, 22, 27 ribs 32 cast-in-place concrete 33 Power per rib
Claims (5)
ート構造のスラブ本体を、力の大きさに応じて複数のゾ
ーンに区分し、各ゾーンに作用する力に応じたスラブ上
端筋を配筋したことを特徴とする鉄筋コンクリート構造
のスラブ。1. A slab body of concrete structure whose periphery is supported by beams and walls is divided into a plurality of zones according to the magnitude of the force, and slab upper end streaks are arranged according to the force acting on each zone. A slab with a reinforced concrete structure characterized by the above.
を特徴とする請求項１に記載の鉄筋コンクリート構造の
スラブ。2. The slab having a reinforced concrete structure according to claim 1, wherein a step portion is formed on the slab body.
板が隣接して設置されてなることを特徴とする請求項１
または２に記載の鉄筋コンクリート構造のスラブ。3. The slab body is characterized in that precast concrete plates are installed adjacent to each other.
Alternatively, the slab having a reinforced concrete structure according to item 2.
型枠が設置されていることを特徴とする請求項３に記載
の鉄筋コンクリート構造のスラブ。4. The slab of reinforced concrete structure according to claim 3, wherein a void formwork is installed on the precast concrete plate.
型枠が設置されたプレキャストコンクリート板上に現場
打ちコンクリートが打設されてなるスラブ本体を、作用
する力の大きさに応じて複数のゾーンに区分し、各ゾー
ンに作用する力に応じてボイド型枠間に形成されるリブ
の数またはリブの幅を決定したことを特徴とする鉄筋コ
ンクリート構造のスラブ。5. A plurality of slab bodies formed by casting cast-in-place concrete on a precast concrete plate provided with a void formwork, which are laid out adjacent to each other between the beams, in accordance with the magnitude of the acting force. A slab of reinforced concrete structure characterized in that the number of ribs or the width of ribs formed between the void formwork is determined according to the force acting on each zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001390100A JP3872981B2 (en) | 2001-12-21 | 2001-12-21 | Reinforced concrete slabs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001390100A JP3872981B2 (en) | 2001-12-21 | 2001-12-21 | Reinforced concrete slabs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003184214A true JP2003184214A (en) | 2003-07-03 |
| JP3872981B2 JP3872981B2 (en) | 2007-01-24 |
Family
ID=27598130
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001390100A Expired - Fee Related JP3872981B2 (en) | 2001-12-21 | 2001-12-21 | Reinforced concrete slabs |
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| Country | Link |
|---|---|
| JP (1) | JP3872981B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7213563B2 (en) | 2004-01-22 | 2007-05-08 | Toyota Jidosha Kabushiki Kaisha | Piston engine having approximate straight-line mechanism |
-
2001
- 2001-12-21 JP JP2001390100A patent/JP3872981B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7213563B2 (en) | 2004-01-22 | 2007-05-08 | Toyota Jidosha Kabushiki Kaisha | Piston engine having approximate straight-line mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3872981B2 (en) | 2007-01-24 |
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