JP2004300848A

JP2004300848A - Support structure of void tube in constructing sleeve for reinforced concrete and spacing material for supporting void tube

Info

Publication number: JP2004300848A
Application number: JP2003097085A
Authority: JP
Inventors: Noriaki Hirama; 規晃平間; Kikumi Haneda; 菊己羽田
Original assignee: Daiwa House Industry Co Ltd
Current assignee: Daiwa House Industry Co Ltd
Priority date: 2003-03-31
Filing date: 2003-03-31
Publication date: 2004-10-28

Abstract

<P>PROBLEM TO BE SOLVED: To provide a support structure for a void tube in constructing a sleeve for reinforced concrete such as a foundation sleeve, stably, firmly and properly supporting the void tube, and facilitating such supporting. <P>SOLUTION: This support structure includes: a spacing material 6 having an insert hole 9 for inserting the end part of a reinforcement bar 4a and a receiving part 7 for receiving the outer peripheral part of the void tube 5 and stopping the void tube 5. In the spacing material 6, the end part of the reinforcement bar 4a is inserted in the hole 9, the outer peripheral part of the void tube 5 is received by the receiving part 7, and the void tube 5 is stopped by the receiving part 7 to be set, whereby the void tube 5 is supported at a predetermined space to the reinforcement bar 4a. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、基礎スリーブ等の鉄筋コンクリートのスリーブの施工におけるボイド管の支持構造及びボイド管支持用の間隔保持材に関する。
【０００２】
【従来の技術】
住宅等の建物の建築において、例えばコンクリート布基礎の立ち上がり部に設備配管などを通すためのスリーブを設けることがあるが、その施工は、従来より、基礎鉄筋を配筋した後、スリーブ形成用のボイド管を基礎鉄筋に保持させ、しかる後、コンクリートを打ち込むというようにして行われている。
【０００３】
【発明が解決しようとする課題】
しかしながら、ボイド管と周囲鉄筋とは、それらの間に例えば４０ｍｍ以上の間隔をおいてかぶり厚さを確保した上でコンクリートの打込みを行わなければならないところ、そのような適正なかたちにボイド管を支持するのが非常に難しいという問題があった。
【０００４】
本発明は、上記のような問題点に鑑み、ボイド管を安定でしっかりとした適正な支持状態にすることができ、しかも、それを容易に行うことができる基礎スリーブ等の鉄筋コンクリートのスリーブの施工におけるボイド管の支持構造及びボイド管支持用の間隔保持材を提供することを課題とする。
【０００５】
【課題を解決するための手段】
上記の課題は、鉄筋端部を差し込む穴と、ボイド管の外周部を受けボイド管を止付け可能な受け部とを有する間隔保持材が備えられ、
該間隔保持材が、穴に鉄筋端部を差し込み、受け部にボイド管の外周部を受けさせ、ボイド管を受け部に止め付けて設置されることにより、ボイド管が前記鉄筋との間に所定の間隔をおいて支持されていることを特徴とする、鉄筋コンクリートのスリーブの施工におけるボイド管の支持構造によって解決される。
【０００６】
この構造によれば、間隔保持材を介してボイド管を鉄筋に支持させるようにしているから、ボイド管の支持状態において、ボイド管が前記鉄筋との間に間隔保持材で必要な間隔をあけることができ、ボイド管を適正な支持状態にすることができる。
【０００７】
しかも、間隔保持材はその穴に鉄筋端部を差し込んで鉄筋に保持され、ボイド材は間隔保持材の受け部に受けられ止め付けられて間隔保持材に保持されているから、ボイド管を間隔保持材を介して鉄筋に安定良くしっかりと支持させることができる。
【０００８】
加えて、ボイド管の支持は、鉄筋の端部を穴に差し込むと共に、ボイド管を受け部に受けさせ止め付けるだけでよく、そのため、ボイド管を容易に上記のような適正で安定の良い支持状態にすることができる。
【０００９】
また、上記の課題は、鉄筋端部を差し込む穴と、ボイド管の外周部を受けボイド管を止付け可能な受け部とを有し、
穴に鉄筋端部を差し込み、受け部にボイド管の外周部を受けさせ、ボイド管を受け部に止め付けて設置することにより、ボイド管を前記鉄筋との間に所定の間隔をおいて支持することができるようになされていることを特徴とする、鉄筋コンクリートのスリーブ施工に用いられるボイド管支持用の間隔保持材によって同様に解決される。
【００１０】
【発明の実施の形態】
次に、本発明の実施形態を図面に基づいて説明する。
【００１１】
図１〜図３に示す第１実施形態のボイド管支持構造は、住宅等の建物の基礎スリーブの施工に適用したもので、１，２，３は基礎鉄筋であり、４はウエブレンと称される貫通孔補強鉄筋、５はボイド管、そして、６が間隔保持材である。
【００１２】
間隔保持材６は、コンクリートとの接着性の良いもの、例えば鉄等の金属加工品やプラスチック等の樹脂成形品や樹脂加工品などからなっており、図３（ロ）に示すように、ボイド管５の外周部を受けて該ボイド管５を止付けることが可能な、受け部としての長方形平板状のプレート部７を備え、このプレート部７の一方の面部の中心部に差し込み穴９を形成するための立ち上がり部としての筒部８が一体にあるいは一体的に備えられ、この筒部８内の穴９を鉄筋端部の差込み穴としている。穴９は、鉄筋端部がしっくりと差し込まれるサイズになっていて、貫通しておらず、鉄筋端部が、その先端とプレート部７の受け面との間に一定の間隔をおくようにして差し込まれるようになされている。また、プレート部７には、穴９を挟む長手方向の両側に釘打ち穴が明けられ、更に、プレート部７と筒部８との境界部には補強用のリブ１０，１０が備えられている。
【００１３】
貫通孔補強鉄筋４は、図３（イ）に示すように、菱形状をしており、斜め下方の左右の辺部の中間位置から中心側に向けて突出する鉄筋４ａ，４ａが備えられており、本実施形態では、これら突出鉄筋４ａ，４ａを間隔保持材６の穴９に差し込む鉄筋としている。従って、間隔保持材６もそれに対応して２つ用いられている。
【００１４】
ボイド管５は、次のようにして支持状態にすることができる。即ち、ボイド管５に間隔保持材６，６を止め付ける。具体的には、図２（イ）（ロ）に示すように、ボイド管５の外周部に間隔保持材６，６のプレート部７，７を、その長手方向がボイド管５の軸線方向と平行になるように沿わせ、そして、釘打ち１２…をする共に、プレート部７の筒部８を挟む両側部分においてプレート部７，７とボイド管５とを結束線１１，１１で結束する。
【００１５】
また、間隔保持材６，６を、図１（ロ）及び図２に示すように、その筒部８の穴９に貫通孔補強鉄筋４の突出鉄筋４ａ，４ａの先端部を差し込むことにより、貫通孔補強鉄筋４に保持させる。なお、ボイド管５への間隔保持材６，６の止付けは、貫通孔補強鉄筋４への間隔保持材６，６の組付けよりも先に行うようにしてもよいし、後に行うようにしてもよいが、本実施形態のような場合は、後に行うとよい。
【００１６】
そして、上記のようにしてボイド管５を保持させた貫通孔補強鉄筋４を、結束線１１…で基礎鉄筋１，２，３に結束して取り付ける。なお、基礎鉄筋１，２，３への貫通孔補強鉄筋４の取付けは、貫通孔補強鉄筋４への間隔保持材６やボイド管５の取付けよりも先に行ってもよいし、後に行ってもよい。こうして、図１（イ）に示すようなボイド管５の支持状態が得られる。
【００１７】
このように上記のボイド管支持構造では、間隔保持材６を介してボイド管５が貫通孔補強鉄筋４の突出鉄筋４ａ，４ａの先端部に支持されているので、突出鉄筋４ａ，４ａの先端部とボイド管５との間に必要な間隔があけられた適正な支持状態にすることができる。
【００１８】
しかも、ボイド管５は、間隔保持材６のプレート部７で受けられ、プレート部７に釘１２や結束線１１で止め付けられ、また、間隔保持材６はその筒部８の穴９に突出鉄筋４ａをしっくりと差し込んで貫通孔補強鉄筋４に保持されているので、貫通孔補強鉄筋４、ひいては基礎鉄筋１，２，３によるボイド管５の支持状態を安定の良いしっかりとしたものにすることができる。
【００１９】
加えて、ボイド管５は、間隔保持材６のプレート部７をボイド管５の外周部に釘１２や結束線１１で止め付けると共に、間隔保持材６の筒部８の穴９に貫通孔補強鉄筋４の突出鉄筋４ａの先端部を差し込み、貫通孔補強鉄筋４を基礎鉄筋１，２，３に取り付けるだけで、安定でしっかりとした適正な支持状態となるので、ボイド管５を容易にそのような支持状態にすることができる。
【００２０】
図４に示す第２実施形態では、同図（ロ）（ハ）に示すように、ボイド管５の外周部の上下にそれぞれ間隔保持材６，６のプレート部７が止め付けられると共に、上下の間隔保持材６，６の筒部８，８の穴９，９にそれぞれ直線鉄筋１３，１３の一端が差し込まれている。そして、同図（イ）に示すように、上下の直線鉄筋１３，１３が基礎鉄筋１，２に結束線１１で結束されると共に、上下の間隔保持材６，６の筒部８，８も基礎鉄筋１４，１４に結束線１１で結束されることで、ボイド管５の支持状態が形成されている。
【００２１】
図５に示す第３実施形態では、第２実施形態と同様に、ボイド管５を上下方向から間隔保持材６，６で受けるようにしているが、ただ、上下の間隔保持材６，６の筒部８，８にそれぞれＴ形鉄筋１５，１５が差し込まれ、該Ｔ形鉄筋１５，１５の両腕のそれぞれが基礎鉄筋１，２に結束線１１…で結束されている点で相違している。その他は第２実施形態と略同様である。
【００２２】
図６に示す第４実施形態では、第２、第３実施形態と同様に、ボイド管５を上下方向から間隔保持材６，６で受けるようにしているが、同図（イ）に示すように、間隔保持材６の受け部７が山形形状をしたプレート部からなっている。このような山形形状をしたプレート部７を備える間隔保持材６を用いることで、ボイド管５の外周部を、対峙する２方向からの受けで安定の良い支持状態を得ることができる。
【００２３】
以上に、本発明の実施形態を示したが、本発明はこれに限られるものではなく、発明思想を逸脱しない範囲で各種の変更が可能である。例えば、上記の実施形態では、間隔保持材６のプレート部７をボイド管５に止め付けるために、釘１２と結束線１１，１１とを用いた場合を示したが、その他の止付け方法が採用されてもよい。また、基礎以外の鉄筋コンクリートにスリーブを設ける場合に本発明を適用することももちろん可能である。
【００２４】
【発明の効果】
本発明は、以上のとおりのものであるから、ボイド管を安定でしっかりとした適正な支持状態にすることができ、しかも、それを容易に行うことができる。
【図面の簡単な説明】
【図１】第１実施形態のボイド管支持構造を示すもので、図（イ）は基礎鉄筋中での支持状態を示す正面図、図（ロ）は貫通孔補強鉄筋に保持させたボイド管を示す正面図である。
【図２】図（イ）はボイド管に対する間隔保持材の止付け状態を示す正面図、図（ロ）は（イ）のＩ−Ｉ線矢視図である。
【図３】図（イ）は貫通孔補強鉄筋の正面図、図（ロ）は間隔保持材の斜視図である。
【図４】第２実施形態のボイド管支持構造を示すもので、図（イ）は基礎鉄筋中での支持状態を示す正面図、図（ロ）は間隔保持材を介して真っ直ぐな鉄筋を付けたボイド管の正面図、図（ハ）はボイド管に対する間隔保持材の止付け状態を示す正面図である。
【図５】第３実施形態のボイド管支持構造を示すもので、図（イ）は基礎鉄筋中での支持状態を示す正面図、図（ロ）は間隔保持材を介してＴ形鉄筋を付けたボイド管の正面図である。
【図６】第４実施形態を示すもので、図（イ）は間隔保持材の斜視図、図（ロ）はボイド管に対する間隔保持材の止付け状態を示す正面図である。
【符号の説明】
４ａ…突出鉄筋（鉄筋）
５…ボイド管
６…間隔保持材
７…プレート部（受け部）
９…穴
１３…直線鉄筋（鉄筋）
１５…Ｔ形鉄筋（鉄筋）[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a support structure for a void pipe in the construction of a reinforced concrete sleeve such as a foundation sleeve and a spacing member for supporting a void pipe.
[0002]
[Prior art]
In the construction of a building such as a house, for example, a sleeve for passing equipment piping and the like may be provided at a rising portion of a concrete cloth foundation, but the construction has conventionally been performed after arranging a base reinforcing bar and then forming a sleeve. This is done by holding the void tube on the foundation rebar and then driving in concrete.
[0003]
[Problems to be solved by the invention]
However, when the void pipe and the surrounding rebar have to be covered with concrete with a cover thickness of, for example, 40 mm or more between them and the concrete must be driven, the void pipe is formed in such an appropriate form. There was a problem that it was very difficult to support.
[0004]
The present invention has been made in consideration of the above-described problems, and has been made in consideration of the above-described problems, and has been made in view of the fact that a void pipe can be stably, firmly, and properly supported, and that a reinforced concrete sleeve such as a foundation sleeve can be easily formed. It is an object of the present invention to provide a support structure for a void pipe and a spacing member for supporting the void pipe.
[0005]
[Means for Solving the Problems]
The above problem is provided with a spacing member having a hole into which the end of the reinforcing bar is inserted, and a receiving portion which can receive the outer peripheral portion of the void tube and fix the void tube,
The spacing material is inserted into the hole with the reinforcing bar end, the receiving portion receives the outer peripheral portion of the void pipe, and the void pipe is fixed to the receiving portion so that the void pipe is located between the reinforcing bar and the reinforcing bar. The problem is solved by a support structure for a void pipe in the installation of a reinforced concrete sleeve, which is supported at a predetermined interval.
[0006]
According to this structure, since the void tube is supported by the reinforcing bar via the spacing member, a necessary spacing is provided between the void tube and the reinforcing bar by the spacing member in a state where the void tube is supported. And the void tube can be properly supported.
[0007]
Moreover, the spacing material is held by the reinforcing bar by inserting the end of the reinforcing bar into the hole, and the void material is received and fixed by the receiving portion of the spacing material and held by the spacing material. The reinforcing bar can be stably and firmly supported via the holding material.
[0008]
In addition, to support the void tube, it is only necessary to insert the end of the rebar into the hole and receive and stop the void tube in the receiving portion, so that the void tube can be easily and properly supported as described above. State.
[0009]
Further, the above problem has a hole into which the end of the rebar is inserted, and a receiving portion which can receive the outer peripheral portion of the void tube and fix the void tube,
By inserting the end of the reinforcing bar into the hole, receiving the outer periphery of the void tube in the receiving portion, and fixing the void tube to the receiving portion, the void tube is supported at a predetermined distance from the reinforcing bar. The present invention is also solved by a spacing member for supporting a void pipe, which is used for reinforced concrete sleeve construction.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the present invention will be described with reference to the drawings.
[0011]
The void pipe support structure of the first embodiment shown in FIGS. 1 to 3 is applied to the construction of a foundation sleeve of a building such as a house, and 1, 2 and 3 are foundation rebars, and 4 is called a weblen. 5 is a void tube, and 6 is a spacing material.
[0012]
The spacing member 6 is made of a material having good adhesiveness to concrete, for example, a metal processed product such as iron, a resin molded product such as plastic, or a resin processed product. As shown in FIG. A rectangular flat plate portion 7 is provided as a receiving portion that can receive the outer peripheral portion of the tube 5 and fix the void tube 5, and an insertion hole 9 is formed in the center of one surface of the plate portion 7. A cylindrical portion 8 as a rising portion for forming is integrally or integrally provided, and a hole 9 in the cylindrical portion 8 is an insertion hole at an end of a reinforcing bar. The hole 9 is sized so that the end of the reinforcing bar can be inserted neatly and does not penetrate, so that the end of the reinforcing bar has a certain distance between its tip and the receiving surface of the plate portion 7. It is made to be inserted. The plate 7 is provided with nailing holes on both sides in the longitudinal direction with the hole 9 interposed therebetween, and further provided with reinforcing ribs 10 and 10 at the boundary between the plate 7 and the cylinder 8. I have.
[0013]
As shown in FIG. 3A, the through-hole reinforcing reinforcing bar 4 has a rhombic shape, and is provided with reinforcing bars 4a, 4a protruding toward the center from an intermediate position between the left and right sides obliquely below. In the present embodiment, the protruding reinforcing bars 4a are used as the reinforcing bars inserted into the holes 9 of the spacing member 6. Therefore, two spacing members 6 are used correspondingly.
[0014]
The void tube 5 can be brought into a supported state as follows. That is, the spacing members 6 and 6 are fixed to the void tube 5. Specifically, as shown in FIGS. 2A and 2B, the plate portions 7, 7 of the spacing members 6, 6 are provided on the outer peripheral portion of the void tube 5, and the longitudinal direction thereof is in the axial direction of the void tube 5. The plates 7, 7 and the void tube 5 are bound together by binding wires 11, on both sides of the plate 7 sandwiching the cylindrical portion 8, while being parallelized and nailing 12.
[0015]
Also, as shown in FIGS. 1B and 2, the spacing members 6, 6 are inserted into the holes 9 of the cylindrical portion 8 by inserting the distal ends of the projecting reinforcing bars 4 a, 4 a of the through-hole reinforcing bar 4. The through-hole reinforcing reinforcing bar 4 is held. The fastening of the spacing members 6 and 6 to the void pipe 5 may be performed before or after the assembly of the spacing members 6 and 6 to the through-hole reinforcing steel 4. However, in the case of the present embodiment, it may be performed later.
[0016]
Then, the through-hole reinforcing reinforcing bar 4 holding the void pipe 5 as described above is bound and attached to the basic reinforcing bars 1, 2, and 3 by the binding wires 11. In addition, the attachment of the through-hole reinforcing bar 4 to the basic reinforcing bars 1, 2, 3 may be performed before or after the attachment of the spacing member 6 or the void pipe 5 to the through-hole reinforcing bar 4. Is also good. Thus, the support state of the void tube 5 as shown in FIG.
[0017]
As described above, in the above-described void pipe support structure, since the void pipe 5 is supported by the distal ends of the protruding rebars 4a of the through-hole reinforcing bar 4 via the spacing member 6, the distal ends of the protruding rebars 4a, 4a are provided. It is possible to provide a proper support state in which a necessary interval is provided between the section and the void tube 5.
[0018]
In addition, the void tube 5 is received by the plate portion 7 of the spacing member 6 and is fixed to the plate portion 7 by a nail 12 or a binding wire 11, and the spacing member 6 protrudes through the hole 9 of the cylindrical portion 8. Since the reinforcing bar 4a is securely inserted into the through-hole reinforcing bar 4 and held by the through-hole reinforcing bar 4, the support state of the void tube 5 by the through-hole reinforcing bar 4, and eventually the basic reinforcing bars 1, 2, 3 is made stable and firm. be able to.
[0019]
In addition, the void tube 5 has the plate portion 7 of the spacing member 6 fixed to the outer peripheral portion of the void tube 5 with a nail 12 or a binding wire 11, and the through hole is reinforced in the hole 9 of the cylindrical portion 8 of the spacing member 6. Simply inserting the tip of the protruding reinforcing bar 4a of the reinforcing bar 4 and attaching the through-hole reinforcing bar 4 to the base bars 1, 2, 3 provides a stable, firm and proper support state, so that the void tube 5 can be easily removed. Such a supporting state can be achieved.
[0020]
In the second embodiment shown in FIG. 4, as shown in FIGS. 4 (b) and 4 (c), the plate portions 7 of the spacing members 6, 6 are fixed to the upper and lower portions of the outer peripheral portion of the void tube 5, respectively. One ends of the linear reinforcing bars 13, 13 are inserted into holes 9, 9 of the cylindrical portions 8, 8 of the spacing members 6, 6, respectively. Then, as shown in FIG. 2A, the upper and lower linear reinforcing bars 13 are bound to the basic reinforcing bars 1 and 2 by the binding wires 11, and the cylindrical portions 8 of the upper and lower spacing members 6 are also formed. The support state of the void pipe 5 is formed by being tied by the tie wires 11 to the basic reinforcing bars 14, 14.
[0021]
In the third embodiment shown in FIG. 5, as in the second embodiment, the void tube 5 is received by the spacing members 6 and 6 from above and below. The difference is that T-shaped rebars 15 are inserted into the tubular portions 8, respectively, and both arms of the T-shaped rebars 15 are bound to the base rebars 1 and 2 by binding wires 11. I have. Others are substantially the same as the second embodiment.
[0022]
In the fourth embodiment shown in FIG. 6, similarly to the second and third embodiments, the void tube 5 is received by the spacing members 6 and 6 from above and below, but as shown in FIG. In addition, the receiving portion 7 of the spacing member 6 is formed by a plate portion having a mountain shape. By using the spacing member 6 provided with the plate portion 7 having such a chevron shape, the outer peripheral portion of the void tube 5 can be stably supported by receiving from two opposing directions.
[0023]
Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various changes can be made without departing from the spirit of the invention. For example, in the above-described embodiment, the case where the nail 12 and the binding wires 11 are used to fix the plate portion 7 of the spacing member 6 to the void tube 5 has been described, but other fastening methods are used. May be employed. The present invention can of course be applied to a case where a sleeve is provided on reinforced concrete other than the foundation.
[0024]
【The invention's effect】
Since the present invention is as described above, the void tube can be stably, firmly and properly supported, and can be easily performed.
[Brief description of the drawings]
FIG. 1 shows a void pipe support structure according to a first embodiment. FIG. 1A is a front view showing a support state in a basic reinforcing bar, and FIG. 1B is a void pipe held by a through-hole reinforcing steel. FIG.
FIG. 2A is a front view showing a state in which a spacing member is fixed to a void tube, and FIG. 2B is a view taken along the line II in FIG.
FIG. 3A is a front view of a through-hole reinforcing reinforcing bar, and FIG. 3B is a perspective view of a spacing member.
4 (a) and 4 (b) show a void pipe support structure according to a second embodiment, wherein FIG. 4 (a) is a front view showing a support state in a basic reinforcing bar, and FIG. 4 (b) is a diagram showing a straight reinforcing bar via a spacing member. FIG. 3C is a front view of the attached void pipe, and FIG. 3C is a front view showing a state in which the spacing member is fixed to the void pipe.
5A and 5B show a void tube support structure according to a third embodiment. FIG. 5A is a front view showing a support state in a basic reinforcing bar, and FIG. 5B is a diagram showing a T-shaped reinforcing bar with a spacing member interposed therebetween. It is a front view of the attached void tube.
FIG. 6 shows the fourth embodiment, and FIG. 6A is a perspective view of the spacing member, and FIG. 6B is a front view showing a state in which the spacing member is fixed to the void tube.
[Explanation of symbols]
4a: Projecting rebar (rebar)
5 void tube 6 spacing member 7 plate part (receiving part)
9: Hole 13: Straight bar (rebar)
15 ... T-shaped rebar (rebar)

Claims

A spacing member having a hole into which the end of the rebar is inserted, and a receiving portion that can receive the outer peripheral portion of the void pipe and fix the void pipe is provided,
The spacing material is inserted into the hole with the reinforcing bar end, the receiving portion receives the outer peripheral portion of the void pipe, and the void pipe is fixed to the receiving portion so that the void pipe is located between the reinforcing bar and the reinforcing bar. A support structure for a void pipe in the construction of a reinforced concrete sleeve, the support structure being supported at predetermined intervals.

It has a hole into which the end of the reinforcing bar is inserted, and a receiving portion that can receive the outer peripheral portion of the void tube and fix the void tube,
By inserting the end of the reinforcing bar into the hole, receiving the outer periphery of the void tube in the receiving portion, and fixing the void tube to the receiving portion, the void tube is supported at a predetermined distance from the reinforcing bar. A spacing member for supporting a void pipe used for reinforced concrete sleeve construction, characterized in that the spacing member is used for constructing a sleeve of reinforced concrete.