JP2021050527A - Form structure and cover obtaining spacer - Google Patents

Form structure and cover obtaining spacer Download PDF

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JP2021050527A
JP2021050527A JP2019173958A JP2019173958A JP2021050527A JP 2021050527 A JP2021050527 A JP 2021050527A JP 2019173958 A JP2019173958 A JP 2019173958A JP 2019173958 A JP2019173958 A JP 2019173958A JP 2021050527 A JP2021050527 A JP 2021050527A
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formwork
lath
receiving portion
cover
reinforced concrete
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JP7370784B2 (en
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和久 浅井
Kazuhisa Asai
和久 浅井
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Daiwa House Industry Co Ltd
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Daiwa House Industry Co Ltd
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Abstract

To provide a form structure capable of obtaining cover thickness of an accurate measurement even when a lath form is used as a form which obtains concrete cover of an erected surface part of reinforced concrete, and a cover obtaining spacer.SOLUTION: A form structure 1 uses a lath form 2 as a form which obtains concrete cover of an erected surface part of reinforced concrete. Moreover, the form structure 1 comprises a leg part 31 which abuts on a stirrup reinforcement 13 present on the erected surface part, and a receiving part (coupling member 33) located separately from the leg part 31, having a size which exceeds the diameter of a mesh hole of the lath form 2, and receiving a face of the lath form 2 on a line parallel with the face.SELECTED DRAWING: Figure 4

Description

この発明は、鉄筋コンクリートの立面部のコンクリートのかぶりを確保する型枠構造およびかぶり確保スペーサに関する。 The present invention relates to a formwork structure for securing concrete fog on an elevation portion of reinforced concrete and a fog securing spacer.

特許文献１には、主筋や肋筋で構成した鉄筋籠の両外側の各々を、所定間隔をおいてラス網で囲ってコンクリートを打設するラス型枠工法が開示されている。具体的には、開口部の両側に外側に張り出し成形した耳部と、この耳部にその一部を曲げ形成した複数のフックを有する横断面が一部開口型の支柱を、前記各ラス網の外側面に前記フックを引っ掛けて竪状に複数本配置し、前記鉄筋籠を挟む支柱間の対向間隔を設定するセパレーターと支柱とを連結固定し、この後にラス網内にコンクリートを打設する。 Patent Document 1 discloses a lath formwork method in which concrete is cast by surrounding each of the outer sides of a reinforcing bar cage composed of main bars and ribs with a lath net at predetermined intervals. Specifically, each of the lath nets has an ear portion formed by projecting outward on both sides of the opening, and a support having a partially open cross section having a plurality of hooks formed by bending a part of the ear portion. A plurality of the hooks are hooked on the outer surface of the slab, and a plurality of the hooks are arranged in a vertical shape. ..

また、特許文献２には、コンクリート打設時にコンクリート構造物の鉄筋と型枠との間のかぶり厚さを確保する円盤状の鉄筋スペーサが開示されている。 Further, Patent Document 2 discloses a disk-shaped reinforcing bar spacer that secures a cover thickness between a reinforcing bar of a concrete structure and a formwork at the time of placing concrete.

特開２００８−３０８８２３号公報Japanese Unexamined Patent Publication No. 2008-308823 特開平１１−２８０２０７号公報Japanese Unexamined Patent Publication No. 11-280207

しかしながら、上記円盤状の鉄筋スペーサを用いて、上記ラス網を、かぶり厚を保持する位置に配置しても、上記ラス網と上記鉄筋スペーサとが点で接触するため、柔らかい上記ラス網に変形が生じたり、上記鉄筋スペーサの一部がメッシュ孔内に入り込む等するため、正確な寸法でかぶり厚を確保することが容易でなかった。 However, even if the lath net is arranged at a position where the cover thickness is maintained by using the disk-shaped reinforcing bar spacer, the lath net and the reinforcing bar spacer come into contact with each other at points, so that the lath net is deformed into a soft lath net. However, it was not easy to secure the cover thickness with accurate dimensions because a part of the reinforcing bar spacers entered the mesh holes.

この発明は、上記の事情に鑑み、鉄筋コンクリートの立面部のコンクリートのかぶりを確保する型枠としてラス型枠を用いる場合でも正確な寸法のかぶり厚が得られる型枠構造およびかぶり確保スペーサを提供する。 In view of the above circumstances, the present invention provides a formwork structure and a formwork securing spacer that can obtain a cover thickness of accurate dimensions even when a lath formwork is used as a formwork for securing the concrete cover on the elevation portion of reinforced concrete. To do.

この発明の型枠構造は、上記の課題を解決するために、鉄筋コンクリートの立面部のコンクリートのかぶりを確保する型枠としてラス型枠を用いる型枠構造であって、上記立面部に存在する鉄筋に当たる脚部と、上記脚部から離間して位置し、上記ラス型枠のメッシュ孔の径を越える大きさを有し、上記ラス型枠の面を、当該面に平行な線または面で受け止める受け部と、を備えることを特徴とする。 The formwork structure of the present invention is a formwork structure in which a lath formwork is used as a formwork for securing the concrete cover of the elevation portion of the reinforced concrete in order to solve the above-mentioned problems, and exists in the elevation portion. A line or surface parallel to the surface of the lath formwork, which is located away from the leg part corresponding to the reinforcing bar and has a size exceeding the diameter of the mesh hole of the lath formwork. It is characterized by having a receiving part that receives the concrete.

上記の構成であれば、上記ラス型枠を受け止める上記受け部が、上記ラス型枠のメッシュ孔の径を越える大きさを有しており、上記ラス型枠と上記受け部とが点ではなく、線または面で接触することができるので、柔らかい上記ラス型枠に対しても変形を生じ難くでき、また、上記受け部の一部がメッシュ孔内に入り込むのが防止されるので、正確な寸法でかぶり厚を得ることが容易になる。 In the above configuration, the receiving portion for receiving the lath formwork has a size exceeding the diameter of the mesh hole of the lath formwork, and the lath formwork and the receiving portion are not points. Since it can be contacted by a line or a surface, it can be less likely to be deformed even with respect to the soft lath formwork, and a part of the receiving portion is prevented from entering the mesh hole, so that it is accurate. It becomes easy to obtain the cover thickness by the dimensions.

上記脚部が、上記鉄筋コンクリートの延設方向に間隔をおいて位置する２本以上の鉄筋に当たるのがよい。これによれば、上記脚部を、２本以上の鉄筋で支持することが可能になるので、上記受け部を鉄筋コンクリートの立面部となる側で安定的に位置させることができる。 It is preferable that the legs hit two or more reinforcing bars located at intervals in the extending direction of the reinforced concrete. According to this, since the leg portion can be supported by two or more reinforcing bars, the receiving portion can be stably positioned on the side to be the elevation portion of the reinforced concrete.

上記脚部および上記受け部のセットを、上記鉄筋コンクリートの延設方向と交差する方向に間隔をおいて２個以上備えてもよい。これによれば、上記受け部を、上記交差する方向において、より多く存在させて上記ラス型枠をしっかりと支持することができる。 Two or more sets of the legs and the receiving portions may be provided at intervals in a direction intersecting the extending direction of the reinforced concrete. According to this, more of the receiving portions can be present in the intersecting directions to firmly support the lath formwork.

上記２個以上の上記脚部および上記受け部のセットが、連結部材で連結されていてもよい。これによれば、複数の上記脚部および上記受け部のセットによって安定して上記ラス型枠を支持することができる。 The set of the two or more legs and the receiving portion may be connected by a connecting member. According to this, the lath form can be stably supported by the set of the plurality of legs and the receiving portions.

或いは、上記脚部を、上記鉄筋コンクリートの延設方向と交差する方向に間隔をおいて２個以上備え、上記２個以上の上記脚部を連結する連結部材が上記受け部をなしてもよい。 Alternatively, two or more of the legs may be provided at intervals in a direction intersecting the extending direction of the reinforced concrete, and a connecting member connecting the two or more legs may form the receiving portion.

上記ラス型枠の外面側に補強棒が配置されており、上記補強棒を上記受け部側に引寄せ部材で引寄せて、上記ラス型枠を上記受け部に当ててもよい。これによれば、上記ラス型枠をしっかりと支持することができる。 A reinforcing rod is arranged on the outer surface side of the lath form, and the reinforcing rod may be attracted to the receiving portion side by an attracting member, and the lath form may be brought into contact with the receiving portion. According to this, the lath form can be firmly supported.

また、この発明のかぶり確保スペーサは、上記のいずれかに記載の型枠構造に用いられる、少なくとも上記脚部および上記受け部を備える。 Further, the cover-securing spacer of the present invention includes at least the above-mentioned legs and the above-mentioned receiving portion, which are used in the formwork structure according to any one of the above.

また、上記確保スペーサは、上記連結部材を備えてもよい。これによれば、当該確保スペーサの取り扱いが容易になり、また、当該かぶり確保スペーサを、現場の鉄筋コンクリートの立面部側の鉄筋に安定的に取り付けることができる。 Further, the securing spacer may include the connecting member. According to this, the securing spacer can be easily handled, and the cover securing spacer can be stably attached to the reinforcing bar on the elevation side of the reinforced concrete at the site.

本発明であれば、ラス型枠を受け止める受け部が、上記ラス型枠のメッシュ孔の径を越える大きさを有するので、上記ラス型枠と上記受け部とが点ではなくて線または面で接触することができ、柔らかい上記ラス型枠に対しても変形を生じ難くでき、また、上記受け部の一部がメッシュ孔内に入り込むのが防止されるので、正確な寸法でかぶり厚を得ることが容易になるという効果を奏する。 In the present invention, since the receiving portion for receiving the lath formwork has a size exceeding the diameter of the mesh hole of the lath formwork, the lath formwork and the receiving portion are not points but lines or surfaces. It can be contacted, and even the soft lath formwork can be less likely to be deformed, and a part of the receiving portion is prevented from entering the mesh hole, so that the cover thickness can be obtained with accurate dimensions. It has the effect of making things easier.

この実施形態の型枠構造を示した図であって、同図（Ａ）は同図（Ｂ）の矢視断面図、同図（Ｂ）は側面図である。It is a figure which showed the formwork structure of this embodiment, FIG. (A) is a sectional view taken along the arrow of FIG. (B), and FIG. (B) is a side view. 同図（Ａ）は図１（Ａ）の一部拡大図であり、同図（Ｂ）は図１（Ｂ）の一部拡大図である。FIG. 1A is a partially enlarged view of FIG. 1A, and FIG. 1B is a partially enlarged view of FIG. 1B. 図１の型枠構造におけるかぶり確保スペーサの配置箇所を拡大して示した斜視図である。It is an enlarged perspective view which showed the arrangement place of the cover | cover securing spacer in the formwork structure of FIG. 図１の型枠構造におけるかぶり確保スペーサおよび鉄筋等を拡大して示した斜視図である。It is an enlarged perspective view which showed the covering securing spacer, the reinforcing bar and the like in the formwork structure of FIG. この発明の実施形態のかぶり確保スペーサを示した斜視図である。It is a perspective view which showed the cover | cover securing spacer of embodiment of this invention. この発明の他の実施形態のかぶり確保スペーサを示した正面図である。It is a front view which showed the fog securing spacer of another embodiment of this invention.

以下、この発明の実施形態を添付図面に基づいて説明する。図１（Ａ）および図１（Ｂ）に示すように、この実施形態の型枠構造１は、例えば、地上梁となる鉄筋コンクリートの立面部のコンクリートのかぶりを確保する型枠としてラス型枠２を用いる型枠構造とされる。上記鉄筋コンクリートの鉄筋は、上端筋１１、下端筋１２、あばら筋（スターラップ筋）１３、図示しない腹筋等を備える。そして、この型枠構造１では、工場生産されたかぶり確保スペーサ３を、上記鉄筋コンクリートの立面部の上記あばら筋１３の縦部分に取り付けている。この取り付けは、図２（Ａ）および図２（Ｂ）に示すように、針金等の結束部材４により行うことができる。なお、上記かぶり確保スペーサ３は、金属からなり、錆止め塗装が施されている。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. As shown in FIGS. 1A and 1B, the formwork structure 1 of this embodiment is, for example, a lath formwork as a formwork for securing concrete cover on the elevation portion of reinforced concrete to be a ground beam. It is a formwork structure using 2. The reinforced concrete reinforcing bar includes an upper end bar 11, a lower end bar 12, a stirrup bar (star wrap bar) 13, an abdominal muscle (not shown), and the like. Then, in this formwork structure 1, the factory-produced cover securing spacer 3 is attached to the vertical portion of the stirrups 13 in the elevation portion of the reinforced concrete. As shown in FIGS. 2 (A) and 2 (B), this attachment can be performed by a binding member 4 such as a wire. The fog securing spacer 3 is made of metal and has a rust preventive coating.

また、上記かぶり確保スペーサ３は、図３および図４にも示すように、上記あばら筋１３に当たる脚部３１と、上記ラス型枠２のメッシュ孔の径を越える大きさを有し、上記脚部３１から水平方向に離間して上記ラス型枠２を受け止める離間部３２と、を備える。この実施形態では、上記離間部３２は、上記ラス型枠２の面に平行な線形状を有しており、その長さ（幅）は、例えば、６０ｍｍ程度とされる。また、上記脚部３１は、上記離間部３２の両側に位置しており、これら両側の各々の長さは、例えば、１２０ｍｍ程度とされる。上記脚部３１における上記両側部の一方の端から上記両側部の他方の端までの長さは３００ｍｍ程度となり、上記鉄筋コンクリートの延設方向にピッチ２００ｍｍで位置する２本のあばら筋１３に当たることができる。上記鉄筋コンクリートの延設方向は、主筋の延びる方向（あばら筋１３が並ぶ方向）である。なお、上記脚部３１に当たる鉄筋はあばら筋１３に限らず、他の鉄筋に当てるようにしてもよい。また、鉄筋コンクリート柱においては、あばら筋に相当する帯筋に上記脚部３１を当てるようにしてもよいが、このような帯筋には限らず、他の鉄筋に当てるようにしてもよい。また、上記脚部３１は、３本以上の鉄筋に当たる長さを有してもよい。 Further, as shown in FIGS. 3 and 4, the cover securing spacer 3 has a size exceeding the diameter of the leg portion 31 corresponding to the stirrups 13 and the mesh hole of the lath formwork 2, and the leg A separating portion 32 that is horizontally separated from the portion 31 and receives the lath form 2 is provided. In this embodiment, the separating portion 32 has a line shape parallel to the surface of the lath form 2, and the length (width) thereof is, for example, about 60 mm. Further, the leg portions 31 are located on both sides of the separating portion 32, and the length of each of these both sides is, for example, about 120 mm. The length from one end of both sides of the leg 31 to the other end of both sides is about 300 mm, and it may hit two stirrups 13 located at a pitch of 200 mm in the extending direction of the reinforced concrete. it can. The extension direction of the reinforced concrete is the direction in which the main bars extend (the direction in which the stirrups 13 are lined up). The reinforcing bar that hits the leg portion 31 is not limited to the stirrups 13, and may be applied to other reinforcing bars. Further, in the reinforced concrete column, the leg portion 31 may be applied to the reinforcing bar corresponding to the stirrups, but the leg portion 31 may be applied not only to such a reinforcing bar but also to another reinforcing bar. Further, the leg portion 31 may have a length that hits three or more reinforcing bars.

また、上記かぶり確保スペーサ３は、上記脚部３１および上記離間部３２のセットを上記鉄筋コンクリートの延設方向と交差する方向に間隔をおいて２個（２個以上でもよい）備える。これら２個の上記脚部３１および上記離間部３２のセットの間隔は、例えば、２００ｍｍ程度とされる。また、上記２個の上記脚部３１および上記離間部３２のセットは、図５にも示すように、上記離間部３２上の中程に位置して各離間部３２に溶接された３００ｍｍ程度の長さの１本の連結部材３３によって連結されている。 Further, the cover securing spacer 3 is provided with two sets (two or more) of the leg portion 31 and the separation portion 32 at intervals in a direction intersecting the extending direction of the reinforced concrete. The distance between the set of the two legs 31 and the separating portion 32 is, for example, about 200 mm. Further, as shown in FIG. 5, the set of the two legs 31 and the separation 32 is located in the middle of the separation 32 and is about 300 mm welded to each separation 32. It is connected by a single connecting member 33 of length.

なお、上記連結部材３３は、１本に限らず、また、上記離間部３２以外の他の箇所に溶接固定されてもよい。ここで、図５に示したように、上記連結部材３３が上記離間部３２の外側（ラス型枠側）に設けられた場合、上記連結部材３３が、受け部、すなわち、上記脚部３１から離間して位置し、上記ラス型枠２のメッシュ孔の径を越える大きさを有し、上記ラス型枠２の面を、当該面に平行な線または面で受け止める受け部として機能する。このような型枠構造１は、上記離間部３２を有する上記脚部３１を、上記鉄筋コンクリートの延設方向と交差する方向に間隔をおいて２個以上備え、上記２個以上の上記脚部３１を連結する上記連結部材３３が上記受け部をなす型枠構造となる。 The connecting member 33 is not limited to one, and may be welded and fixed to a portion other than the separating portion 32. Here, as shown in FIG. 5, when the connecting member 33 is provided on the outside of the separating portion 32 (on the lath form side), the connecting member 33 is provided from the receiving portion, that is, the leg portion 31. It is located at a distance and has a size exceeding the diameter of the mesh hole of the lath form 2 and functions as a receiving portion for receiving the surface of the lath form 2 with a line or surface parallel to the surface. In such a formwork structure 1, two or more of the leg portions 31 having the separating portions 32 are provided at intervals in a direction intersecting the extending direction of the reinforced concrete, and the two or more of the leg portions 31 are provided. The connecting member 33 that connects the above forms a formwork structure that forms the receiving portion.

一方、上記連結部材３３が上記離間部３２の内側に設けられた場合、当該離間部３２が、上記受け部として機能する。このような型枠構造１は、上記脚部３１および上記受け部（上記離間部３２）のセットを、上記鉄筋コンクリートの延設方向と交差する方向に間隔をおいて２個以上備えるとともに、上記２個以上の上記脚部３１および上記受け部（上記離間部３２）のセットが、上記連結部材３３で連結された構造となる。なお、この場合、上記ラス型枠２の面が上記離間部３２に当てられることになる。 On the other hand, when the connecting member 33 is provided inside the separating portion 32, the separating portion 32 functions as the receiving portion. In such a formwork structure 1, two or more sets of the leg portion 31 and the receiving portion (the separating portion 32) are provided at intervals in a direction intersecting the extending direction of the reinforced concrete, and the above 2 The set of the leg portion 31 and the receiving portion (the separating portion 32) is connected by the connecting member 33. In this case, the surface of the lath formwork 2 is applied to the separation portion 32.

また、上記連結部材３３と上記離間部３２とが面一に設けられた場合、上記連結部材３３および上記離間部３２の両方が、上記受け部として機能する。 Further, when the connecting member 33 and the separating portion 32 are provided flush with each other, both the connecting member 33 and the separating portion 32 function as the receiving portion.

上記かぶり確保スペーサ３の上記脚部３１および上記離間部３２は、棒状材を折り曲げ加工することで形成されている。上記棒状材としては、例えば、直径６ｍｍの丸棒が用いられる。また、上記離間部３２の高さ、すなわち、上記あばら筋１３からの当該離間部３２の最外面までの突出量は、５４ｍｍ程度とされる。また、上記連結部材３３としても、直径６ｍｍの丸棒を用いており、この連結部材３３を含めた高さは、６０ｍｍ程度とされる。 The leg portion 31 and the separating portion 32 of the fog securing spacer 3 are formed by bending a rod-shaped material. As the rod-shaped material, for example, a round bar having a diameter of 6 mm is used. Further, the height of the separation portion 32, that is, the amount of protrusion from the stirrups 13 to the outermost surface of the separation portion 32 is about 54 mm. Further, as the connecting member 33, a round bar having a diameter of 6 mm is used, and the height including the connecting member 33 is about 60 mm.

また、上記の型枠構造１においては、上記ラス型枠２の外面側に補強棒２１が水平配置されている。上記補強棒２１は、上記受け部として機能する上記連結部材３３側に引寄せ部材（ホームタイ等）で引寄せられ、これによって、上記ラス型枠２が上記連結部材３３の最外面に圧接される。 Further, in the formwork structure 1, the reinforcing rods 21 are horizontally arranged on the outer surface side of the lath formwork 2. The reinforcing rod 21 is attracted to the connecting member 33 side that functions as the receiving portion by an attracting member (home tie or the like), whereby the lath formwork 2 is pressed against the outermost surface of the connecting member 33. To.

なお、上記ラス型枠２のリブ突出部２ａの突出高さは、例えば、６ｍｍ程度であるが、このリブ突出部２ａが上記離間部３２上に位置した場合でも、上記連結部材３３による６ｍｍ程度の段差ができていることで、上記リブ突出部２ａの潰れが防止される。 The protrusion height of the rib protrusion 2a of the lath form 2 is, for example, about 6 mm, but even when the rib protrusion 2a is located on the separation portion 32, the rib protrusion 2a is about 6 mm due to the connecting member 33. By forming the step, the rib protruding portion 2a is prevented from being crushed.

上記の構成であれば、上記ラス型枠２を受け止める受け部が、上記ラス型枠２のメッシュ孔の径を越える大きさを有しており、上記ラス型枠２と上記受け部とが点ではなく、線または面で接触することができるので、柔らかい上記ラス型枠２に対しても変形を生じ難くでき、また、上記受け部の一部がメッシュ孔内に入り込むのが防止されるので、正確な寸法でかぶり厚を得ることが容易になる。 In the above configuration, the receiving portion for receiving the lath form 2 has a size exceeding the diameter of the mesh hole of the lath form 2, and the lath form 2 and the receiving portion are points. Since the contact can be made by a line or a surface instead of, the soft lath form 2 can be less likely to be deformed, and a part of the receiving portion is prevented from entering the mesh hole. , It becomes easy to obtain the cover thickness with accurate dimensions.

上記脚部３１が、上記鉄筋コンクリートの延設方向に間隔をおいて位置する２本以上の鉄筋に当たると、上記脚部３１を、２本以上の鉄筋（あばら筋１３等）で支持することが可能になるので、上記受け部を鉄筋コンクリートの立面部となる側で安定的に位置させることができる。 When the leg portion 31 hits two or more reinforcing bars located at intervals in the extending direction of the reinforced concrete, the leg portion 31 can be supported by two or more reinforcing bars (such as stirrups 13). Therefore, the receiving portion can be stably positioned on the side that becomes the elevation portion of the reinforced concrete.

上記脚部３１および上記受け部（上記離間部３２）のセットを上記鉄筋コンクリートの延設方向と交差する方向に間隔をおいて２個以上備えると、上記受け部（上記離間部３２）を、上記交差する方向において、より多く存在させて上記ラス型枠２をしっかりと支持することができる。 When two or more sets of the leg portion 31 and the receiving portion (the separating portion 32) are provided at intervals in a direction intersecting the extending direction of the reinforced concrete, the receiving portion (the separating portion 32) is provided. The lath formwork 2 can be firmly supported by having more of them present in the intersecting directions.

上記２個以上の上記脚部３１および上記受け部（上記離間部３２）のセットが、上記連結部材３３で連結されていると、上記脚部３１および上記受け部（上記離間部３２）の複数セットによって安定して上記ラス型枠２を支持することができる。 When the set of the two or more leg portions 31 and the receiving portion (the separating portion 32) is connected by the connecting member 33, the plurality of the leg portion 31 and the receiving portion (the separating portion 32) are connected. The lath formwork 2 can be stably supported by the set.

また、図５に示したように、上記脚部３１を、上記鉄筋コンクリートの延設方向と交差する方向に間隔をおいて２個以上備え、上記２個以上の上記脚部２１を連結する上記連結部材３３が上記受け部をなす構成においても、安定して上記ラス型枠２を支持することができる。 Further, as shown in FIG. 5, two or more of the leg portions 31 are provided at intervals in a direction intersecting the extending direction of the reinforced concrete, and the two or more leg portions 21 are connected to each other. Even in a configuration in which the member 33 forms the receiving portion, the lath form 2 can be stably supported.

上記ラス型枠２の外面側に補強棒２１が配置されており、上記補強棒２１を上記受け部側に引寄せ部材５で引寄せ、上記ラス型枠２を上記受け部に当てる構成であると、上記ラス型枠２をしっかりと支持することができる。 The reinforcing rod 21 is arranged on the outer surface side of the lath formwork 2, the reinforcing rod 21 is attracted to the receiving portion side by the pulling member 5, and the lath form 2 is brought into contact with the receiving portion. And, the lath formwork 2 can be firmly supported.

上記かぶり確保スペーサ３が、棒状材を折り曲げ加工して上記脚部３１および上記離間部３２を得る構造であると、上記脚部３１および上記離間部３２を安価に得ることができる。 If the cover securing spacer 3 has a structure in which the rod-shaped material is bent to obtain the leg portion 31 and the separating portion 32, the leg portion 31 and the separating portion 32 can be obtained at low cost.

また、上記確保スペーサ３が上記連結部材３３を備えると、当該確保スペーサ３の取り扱いが容易になり、また、当該かぶり確保スペーサ３を、現場の鉄筋コンクリートの立面部側の鉄筋に安定的に取り付けることができる。 Further, when the securing spacer 3 is provided with the connecting member 33, the securing spacer 3 can be easily handled, and the cover securing spacer 3 is stably attached to the reinforcing bar on the elevation side of the reinforced concrete at the site. be able to.

なお、上記かぶり確保スペーサ３は、上記の形態に限らず、図６に示す形態を有するかぶり確保スペーサ３Ａとしてもよい。すなわち、このかぶり確保スペーサ３Ａにおいて、脚部３１は直線状の棒材からなり、離間部３２は２本の直線状の棒材による略Ｔ字形状を有する。これら脚部３１と離間部３２は例えば溶接により固定されている。また、脚部３１と離間部３２を有するセット２個が、受け部となる連結部材３３によって相互に固定されている。なお、上記離間部３２において、上記２本の直線状の棒材によるＴ字形状ではなく、１本の柄となる棒材に、上記ラス型枠２の面に平行でメッシュ孔よりも大きい円形等の板材を固定した構成としてもよい。 The cover securing spacer 3 is not limited to the above form, and may be a cover securing spacer 3A having the form shown in FIG. That is, in the cover securing spacer 3A, the leg portion 31 is made of a straight bar member, and the separating portion 32 has a substantially T-shape made of two straight bar members. The leg portion 31 and the separating portion 32 are fixed by welding, for example. Further, the two sets having the leg portion 31 and the separating portion 32 are mutually fixed by the connecting member 33 serving as the receiving portion. In the separation portion 32, instead of the T-shape formed by the two linear rods, the rod material having one handle has a circular shape parallel to the surface of the lath form 2 and larger than the mesh hole. A plate material such as the above may be fixed.

また、脚部をＩ字状部とし、これらＩ字状部の上端を連結するように連結部材３３を固定してもよい。この構成は、上記ラス型枠２の面に平行な上記連結部材３３が受け部として機能できる。また、この構成において、上記連結部材３３の中程に、上記ラス型枠２の面に平行でメッシュ孔よりも大きい円形等の板材を固定し、この板材および上記連結部材３３を受け部として機能させるようにしてもよい。また、１本の棒材を逆Ｕ字に曲げ加工して上記Ｉ字状部と上記連結部材３３とを一体化させた構成としてもよい。 Further, the leg portion may be an I-shaped portion, and the connecting member 33 may be fixed so as to connect the upper ends of the I-shaped portion. In this configuration, the connecting member 33 parallel to the surface of the lath form 2 can function as a receiving portion. Further, in this configuration, a circular plate material parallel to the surface of the lath form 2 and larger than the mesh hole is fixed in the middle of the connecting member 33, and functions as a receiving portion for the plate material and the connecting member 33. You may let it. Further, one bar may be bent into an inverted U shape to integrate the I-shaped portion and the connecting member 33.

以上、図面を参照してこの発明の実施形態を説明したが、この発明は、図示した実施形態のものに限定されない。図示した実施形態に対して、この発明と同一の範囲内において、あるいは均等の範囲内において、種々の修正や変形を加えることが可能である。 Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to those of the illustrated embodiments. Various modifications and modifications can be made to the illustrated embodiment within the same range as the present invention or within the same range.

１ ：型枠構造
２ ：ラス型枠
２ａ ：リブ突出部
３ ：かぶり確保スペーサ
３Ａ ：かぶり確保スペーサ
４ ：結束部材
５ ：引寄せ部材
１１ ：上端筋
１２ ：下端筋
１３ ：あばら筋
２１ ：補強棒
３１ ：脚部
３２ ：離間部（受け部）
３３ ：連結部材（受け部） 1: Formwork structure 2: Lath formwork 2a: Rib protrusion 3: Cover securing spacer 3A: Cover securing spacer 4: Bundling member 5: Pulling member 11: Upper end bar 12: Lower end bar 13: Stirrup bar 21: Reinforcing rod 31: Leg 32: Separation part (receiving part)
33: Connecting member (receiving part)

Claims (8)

鉄筋コンクリートの立面部のコンクリートのかぶりを確保する型枠としてラス型枠を用いる型枠構造であって、
上記立面部に存在する鉄筋に当たる脚部と、
上記脚部から離間して位置し、上記ラス型枠のメッシュ孔の径を越える大きさを有し、上記ラス型枠の面を、当該面に平行な線または面で受け止める受け部と、を備えることを特徴とする型枠構造。 It is a formwork structure that uses a lath formwork as a formwork to secure the concrete cover on the elevation of reinforced concrete.
The legs that hit the reinforcing bars on the elevation and
A receiving portion that is located away from the leg portion, has a size exceeding the diameter of the mesh hole of the lath formwork, and receives the surface of the lath formwork with a line or surface parallel to the surface. Formwork structure characterized by being provided. 請求項１に記載の型枠構造において、上記脚部が、上記鉄筋コンクリートの延設方向に間隔をおいて位置する２本以上の鉄筋に当たることを特徴とする型枠構造。 The formwork structure according to claim 1, wherein the legs hit two or more reinforcing bars located at intervals in the extending direction of the reinforced concrete. 請求項１または請求項２に記載の型枠構造において、上記脚部および上記受け部のセットを、上記鉄筋コンクリートの延設方向と交差する方向に間隔をおいて２個以上備えることを特徴とする型枠構造。 The formwork structure according to claim 1 or 2, characterized in that two or more sets of the leg portion and the receiving portion are provided at intervals in a direction intersecting the extending direction of the reinforced concrete. Formwork structure. 請求項３に記載の型枠構造において、上記２個以上の上記脚部および上記受け部のセットが、連結部材で連結されていること特徴とする型枠構造。 The formwork structure according to claim 3, wherein a set of the two or more legs and the receiving portion is connected by a connecting member. 請求項１または請求項２に記載の型枠構造において、上記脚部を、上記鉄筋コンクリートの延設方向と交差する方向に間隔をおいて２個以上備え、上記２個以上の上記脚部を連結する連結部材が上記受け部をなすことを特徴とする型枠構造。 In the formwork structure according to claim 1 or 2, two or more of the legs are provided at intervals in a direction intersecting the extending direction of the reinforced concrete, and the two or more legs are connected. A formwork structure characterized in that the connecting member to be formed forms the receiving portion. 請求項１〜請求項５のいずれか１項に記載の型枠構造において、上記ラス型枠の外面側に補強棒が配置されており、上記補強棒を上記受け部側に引寄せ部材で引寄せて、上記ラス型枠を上記受け部に当てることを特徴とする型枠構造。 In the formwork structure according to any one of claims 1 to 5, a reinforcing rod is arranged on the outer surface side of the lath formwork, and the reinforcing rod is pulled toward the receiving portion side by an attracting member. A formwork structure characterized in that the lath formwork is brought close to the receiving portion. 請求項１〜請求項６のいずれか１項に記載の型枠構造に用いられる、少なくとも上記脚部および上記受け部を備えるかぶり確保スペーサ。 A cover securing spacer provided with at least the leg portion and the receiving portion, which is used in the formwork structure according to any one of claims 1 to 6. 請求項４または請求項５に記載の型枠構造に用いられる、上記連結部材を備えたかぶり確保スペーサ。 A cover-securing spacer provided with the connecting member, which is used in the formwork structure according to claim 4 or 5.
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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59109830U (en) * 1983-01-13 1984-07-24 鹿島建設株式会社 Spacer for slab mesh muscle
JPH0354836U (en) * 1989-10-03 1991-05-27
JPH0552034U (en) * 1991-11-14 1993-07-09 大和ハウス工業株式会社 Rebar spacer
JP3014987U (en) * 1995-02-21 1995-08-22 株式会社富士昭技研 Reinforcement equipment for existing buildings
JPH0835289A (en) * 1994-07-22 1996-02-06 Saburo Nakagawa Spacer of reinforcement buried in concrete
JPH08158635A (en) * 1994-12-09 1996-06-18 Katsumura Kensetsu Kk Formwork for placing concrete
JPH1088716A (en) * 1996-09-12 1998-04-07 Minoru Hosoda Combined using method of mesh form and plate like form such as plywood
JP2000129842A (en) * 1998-10-23 2000-05-09 Toyota Soken Co Ltd Metal fittings for concrete form with hole
JP2002167968A (en) * 2000-11-27 2002-06-11 Nippon Industry Co Ltd Slab bar arrangement execution method

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59109830U (en) * 1983-01-13 1984-07-24 鹿島建設株式会社 Spacer for slab mesh muscle
JPH0354836U (en) * 1989-10-03 1991-05-27
JPH0552034U (en) * 1991-11-14 1993-07-09 大和ハウス工業株式会社 Rebar spacer
JPH0835289A (en) * 1994-07-22 1996-02-06 Saburo Nakagawa Spacer of reinforcement buried in concrete
JPH08158635A (en) * 1994-12-09 1996-06-18 Katsumura Kensetsu Kk Formwork for placing concrete
JP3014987U (en) * 1995-02-21 1995-08-22 株式会社富士昭技研 Reinforcement equipment for existing buildings
JPH1088716A (en) * 1996-09-12 1998-04-07 Minoru Hosoda Combined using method of mesh form and plate like form such as plywood
JP2000129842A (en) * 1998-10-23 2000-05-09 Toyota Soken Co Ltd Metal fittings for concrete form with hole
JP2002167968A (en) * 2000-11-27 2002-06-11 Nippon Industry Co Ltd Slab bar arrangement execution method

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