JP5746588B2 - Horizontal slit material, construction method of horizontal joint using the same, and structure of horizontal joint - Google Patents

Horizontal slit material, construction method of horizontal joint using the same, and structure of horizontal joint Download PDF

Info

Publication number
JP5746588B2
JP5746588B2 JP2011176212A JP2011176212A JP5746588B2 JP 5746588 B2 JP5746588 B2 JP 5746588B2 JP 2011176212 A JP2011176212 A JP 2011176212A JP 2011176212 A JP2011176212 A JP 2011176212A JP 5746588 B2 JP5746588 B2 JP 5746588B2
Authority
JP
Japan
Prior art keywords
slit material
horizontal
slit
plate portion
joint
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.)
Active
Application number
JP2011176212A
Other languages
Japanese (ja)
Other versions
JP2013040451A (en
Inventor
重徳 西田
重徳 西田
亮 宇田川
亮 宇田川
昌之 西川
昌之 西川
Original Assignee
岡部株式会社
ドラーフタイト工業株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 岡部株式会社, ドラーフタイト工業株式会社 filed Critical 岡部株式会社
Priority to JP2011176212A priority Critical patent/JP5746588B2/en
Publication of JP2013040451A publication Critical patent/JP2013040451A/en
Application granted granted Critical
Publication of JP5746588B2 publication Critical patent/JP5746588B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Description

本発明は、鉄筋コンクリート建造物において、壁部の水平打継部に埋設する水平スリット材と、それを使用した水平打継部の施工方法、及び水平打継部の構造に関する。   The present invention relates to a horizontal slit member embedded in a horizontal joint portion of a wall portion in a reinforced concrete building, a method of constructing a horizontal joint portion using the same, and a structure of the horizontal joint portion.

近年、ビル等の鉄筋コンクリート造の建物では、柱や壁等の境界部分に対して、層間変位に対する力学的な不連続部となる構造スリットを形成する目的で、スリット材と称される緩衝材を使用する工法が普及しつつある。このスリット材は、壁を貫通するように埋設され、当該スリット材を介して建造物が構造的に分断されている。そして、地震による外力を受けたときには、建造物に生じる剪断応力をスリット材で吸収緩和し、その伝達を遮断することにより、建造物の剪断破壊、脆性破壊を回避するようになっている。ここで、外型枠と内型枠との間にコンクリートを打設して形成される壁部の水平打継部に埋設する従来の水平スリット材として、例えば、特許文献１に記載のものがある。この水平スリット材は、押出成形による合成樹脂からなり、上面板と底面板が外型枠に固定された目地棒に係合するための基部を形成する一方、基部と相対する本体部が、上面板と底面板とを隔てると共にスリット支持板と水返しを反対側の端部に有し、さらに上面板と底面板がそれぞれ内型枠側に向けて上昇する傾斜面とした構成となっている。この場合、スリット支持板上に水平スリットを載置すると共に、水返しで水平スリットを水平打継部に位置づけることができ、水返しが壁部外面側からの浸水を阻止している。   In recent years, in reinforced concrete buildings such as buildings, a buffer material called a slit material has been used for the purpose of forming a structural slit that becomes a mechanical discontinuity with respect to inter-layer displacement at a boundary portion such as a column or wall. The construction method used is becoming widespread. The slit material is embedded so as to penetrate the wall, and the building is structurally divided through the slit material. When an external force due to an earthquake is received, the shear stress generated in the building is absorbed and relaxed by the slit material, and the transmission is interrupted, thereby preventing the shear fracture and brittle fracture of the building. Here, as a conventional horizontal slit material embedded in a horizontal joint portion of a wall portion formed by placing concrete between an outer mold frame and an inner mold frame, for example, the one described in Patent Document 1 is available. is there. This horizontal slit material is made of synthetic resin by extrusion molding, and the top plate and the bottom plate form a base part for engaging with the joint rod fixed to the outer mold frame, while the main body part facing the base part is the top part. The face plate and the bottom plate are separated from each other, the slit support plate and the water return are provided on the opposite end, and the top plate and the bottom plate are inclined surfaces that rise toward the inner mold side. . In this case, the horizontal slit can be placed on the slit support plate, and the horizontal slit can be positioned at the horizontal joint by water return, so that the water return prevents water from entering the outer surface of the wall.

特開２００９−１２７２３５号公報JP 2009-127235 A

しかし、上記水平スリット材は、本体部の上面板と下面板との間に大きな空隙部（中空部）を有するので、その大きな空隙部に大量のコンクリートが侵入するおそれがあり、所定のスリット幅を確保できないおそれがある。また、基部と本体部とが嵌め込み式であるため、コンクリート打設時に最も荷重のかかる場所での結合となり、外れやすいという問題もある。さらに、水平スリット材の底面側に水平部分が存在していることにより、その水平部分に気泡（空気溜まり）や水溜りができ易いという問題もある。また、スリット幅を変更する場合には、個別に成型用の金型を用意しなければならず、品揃えの点からコスト高になるという問題もある。   However, since the horizontal slit material has a large gap (hollow part) between the upper surface plate and the lower surface plate of the main body, there is a possibility that a large amount of concrete may enter the large gap portion, and the predetermined slit width May not be secured. Further, since the base portion and the main body portion are fitted, there is a problem in that the base portion and the main body portion are coupled at a place where the load is most applied at the time of placing concrete and are easily detached. Further, since the horizontal portion exists on the bottom side of the horizontal slit member, there is a problem that bubbles (air pool) and water can easily be formed in the horizontal portion. In addition, when changing the slit width, it is necessary to prepare molds for molding individually, and there is a problem that the cost is increased in terms of assortment.

そこで、本発明は、所定のスリット幅を確実に確保できると共に、その変更が容易であり、コンクリート打設時に目地棒等から外れることもなく、底面側に気泡や水溜りが発生し難い水平スリット材、それを使用した水平打継部の施工方法及び水平打継部の構造を提供することを目的とする。   Accordingly, the present invention can ensure a predetermined slit width, is easy to change, and does not come off from a joint rod or the like when placing concrete, and is a horizontal slit that is less likely to generate bubbles and water pools on the bottom side. An object is to provide a material, a method for constructing a horizontal joint using the same, and a structure of the horizontal joint.

前記目的を達成するため、請求項１に係る発明の水平スリット材は、外型枠と内型枠との間にコンクリートを打設して形成される壁部の水平打継部に埋設する水平スリット材であって、スリット材本体と、そのスリット材本体を支持するスリット材支持体とからなり、前記スリット材支持体は、外型枠に固定した目地棒の上面に載置される先端部と、その先端部と連続し他端側に向けて設けられた上面板部と、それら先端部または上面板部の下面側に設けられ目地棒の側面に当接する外側板部と、その外側板部と対向するように上面板部の他端側において下面側に設けられた内側板部とを有する一方、前記スリット材本体は、前記スリット材支持体の外側板部に当接する前側面と、その内側板部に当接すると共にその内側板部の高さ以上の後側面と、前側面から後側面に向けて上昇する傾斜下面とを有し、該スリット材本体が前記スリット材支持体の外側板部と上面板部と内側板部とにより形成される下方開口のコ字状部分に対して、その傾斜下面が埋没しない状態で嵌合されることを特徴とする。この構成によれば、スリット材支持体のコ字状部分にスリット材本体が嵌合しているので、コ字状部分にコンクリートが浸入して溜まることがなくなり所定のスリット幅を確実に確保できる。また、スリット材本体の幅（鉛直方向の寸法）を変更することにより、打継部に形成するスリット幅を容易に変更できる。さらに、スリット材本体の後側面は、その下端位置がスリット材支持体の内側板部の下端と同じか、あるいはそれよりも下方にあり、かつ前側面から後側面に向けて上昇する傾斜下面を有しているので、スリット材支持体の底面における気泡や水溜りの滞留を極力防止できる。
また、請求項２に係る発明の水平スリット材は、請求項１記載の水平スリット材において、前記スリット材支持体の上面板部下面と前記スリット材本体上面との間に、空隙部を設けることを特徴とする。これにより、上面板部の弾性が効果的に発揮され、例えば外側板部と内側板部とを予めそれぞれ内側に幾分か傾斜した状態に形成した場合には、外側板部と内側板部との間にスリット材本体を挟んだときの把持力が高まり、より強固にスリット材支持体のコ字状部分にスリット材本体を嵌合して一体化することが可能となる。さらに、上記空隙部はスリット部としての機能も有するので、スリット材本体の下面を傾斜させたことに伴うスリット幅の不足分を補完することもできる。
また、請求項３に係る発明の水平スリット材は、請求項１または請求項２に記載の水平スリット材において、前記スリット材支持体の上面板部が、目地棒の上面より高い位置に設けられることを特徴とする。これにより、スリット材支持体の上面板部側において、外型枠と水平スリット材との間に打設されたコンクリートの充填性が高まるので、水平打継部における止水性が向上すると共に、クラックの生じにくい外壁構造とすることができる。
また、請求項４に係る発明の水平スリット材は、請求項１〜請求項３のいずれか一の請求項に記載の水平スリット材において、前記スリット材支持体の内側板部の下端に、スリット材本体下面よりも上方に傾斜するアンカー部を設けたことを特徴とする。この場合には、コンクリートを打設する際、確実に水平スリット材を下層階の梁部中に埋設することができると共に、アンカー部の下面側にも気泡や水溜りが発生しなくなり、品質の高いコンクリート躯体を製造できる。
また、請求項５に係る発明の水平打継部の施工方法は、請求項１〜請求項４のいずれか一の請求項に記載の水平スリット材を、外型枠に固定された目地棒の上面に、そのスリット材支持体の先端部を載置した状態で固定し、前記目地棒の上面レベルまでコンクリートを打設して下層階の梁部を構築した後、上面板部より内側の梁部上面に別のスリット材を設置した状態でさらにコンクリートを打設して上層階の壁部を構築することを特徴とする。これにより、請求項１の発明と同様の効果が得られる。
また、請求項６に係る発明の水平打継部の構造は、請求項１〜請求項４のいずれか一の請求項に記載の水平スリット材を、外型枠に固定された目地棒の上面に、そのスリット材支持体の先端部を載置した状態で固定し、前記目地棒の上面レベルまでコンクリートを打設して下層階の梁部を構築した後、上面板部より内側の梁上面に別のスリット材を設置した状態でさらにコンクリートを打設して上層階の壁部を構築したことを特徴とする。これにより、請求項１及び請求項５の発明と同様の効果が得られる。 In order to achieve the above object, the horizontal slit member of the invention according to claim 1 is embedded horizontally in a horizontal joint portion of a wall portion formed by placing concrete between an outer mold frame and an inner mold frame. A slit material comprising a slit material main body and a slit material support that supports the slit material main body, the slit material support being mounted on the upper surface of a joint rod fixed to an outer mold frame An upper plate provided continuously toward the other end side of the tip, an outer plate provided on the lower side of the tip or the upper plate, and abutting the side surface of the joint rod, and the outer plate An inner plate provided on the lower surface side at the other end side of the upper surface plate portion so as to face the portion, while the slit material body is in contact with the outer plate portion of the slit material support, After contacting the inner plate and after the height of the inner plate A lower opening formed by the outer plate portion, the upper plate portion, and the inner plate portion of the slit material support body, and an inclined lower surface rising from the front side surface toward the rear side surface. The inclined surface is fitted to the U-shaped portion without being buried. According to this configuration, since the slit material main body is fitted to the U-shaped portion of the slit material support, concrete does not enter and accumulate in the U-shaped portion, and a predetermined slit width can be reliably ensured. . Moreover, the slit width formed in the joining part can be easily changed by changing the width (dimension in the vertical direction) of the slit material body. Further, the rear side surface of the slit material main body has an inclined lower surface whose lower end position is the same as or lower than the lower end of the inner plate portion of the slit material support and rises from the front side surface toward the rear side surface. Since it has, it can prevent as much as possible the retention of the bubble and water pool in the bottom face of a slit material support body.
Moreover, the horizontal slit material of the invention which concerns on Claim 2 provides a space | gap part in the horizontal slit material of Claim 1 between the upper surface board part lower surface of the said slit material support body, and the said slit material main body upper surface. It is characterized by. Thereby, the elasticity of the upper surface plate portion is effectively exerted. For example, when the outer side plate portion and the inner side plate portion are formed in a state in which they are inclined somewhat inward, The gripping force when the slit material main body is sandwiched between them is increased, and the slit material main body can be more firmly fitted and integrated with the U-shaped portion of the slit material support. Furthermore, since the said cavity part also has a function as a slit part, the insufficient part of the slit width accompanying tilting the lower surface of a slit material main body can also be supplemented.
Moreover, the horizontal slit material of the invention which concerns on Claim 3 is a horizontal slit material of Claim 1 or Claim 2, The upper surface board part of the said slit material support body is provided in a position higher than the upper surface of a joint rod. It is characterized by that. As a result, on the upper surface plate portion side of the slit material support, the filling property of the concrete placed between the outer mold frame and the horizontal slit material is increased, so that the water stoppage at the horizontal joint portion is improved and cracks are generated. It can be set as the outer wall structure which is hard to produce.
Moreover, the horizontal slit material of the invention which concerns on Claim 4 is a horizontal slit material as described in any one of Claims 1-3, A slit is provided in the lower end of the inner side board part of the said slit material support body. An anchor portion inclined upward from the lower surface of the material main body is provided. In this case, when placing concrete, the horizontal slit material can be surely embedded in the beam portion of the lower floor, and no bubbles or water pools are generated on the lower surface side of the anchor portion, so that the quality is improved. Can produce high concrete frames.
Moreover, the construction method of the horizontal joint part of the invention which concerns on Claim 5 is a horizontal slit material as described in any one of Claims 1-4. After fixing the tip of the slit material support on the upper surface and placing the concrete up to the upper surface level of the joint rod to construct the lower floor beam, the beam on the inner side of the upper plate It is characterized by constructing a wall part of an upper floor by further placing concrete with another slit material installed on the upper surface of the part. Thereby, the same effect as that attained by the 1st aspect can be attained.
Moreover, the structure of the horizontal joint part of the invention which concerns on Claim 6 is the upper surface of the joint rod which fixed the horizontal slit material as described in any one of Claims 1-4 to the outer form frame. The top of the slit material support is fixed in a state where it is placed, and after the concrete is cast up to the upper surface level of the joint rod to construct the beam portion of the lower floor, the upper surface of the beam inside the upper surface plate portion In the state where another slit material is installed, concrete is further placed to construct a wall part of an upper floor. Thus, the same effects as those of the first and fifth aspects of the invention can be obtained.

本発明の水平スリット材、それを使用した水平打継部の施工方法及び水平打継部の構造では、下方に開口するスリット材支持体のコ字状部分にスリット材本体を嵌合させているので、コンクリートの打設時にその浸入を完全に防止し、場合によっては最小限に止め、所定のスリット幅を確保できる。また、スリット材本体の鉛直方向の寸法を変えることにより、水平打継部に形成するスリット幅の変更も容易である。さらに、スリット材本体の下面が外型枠から内型枠に向かうに従って上昇する傾斜面に形成され、かつ後側面の下端がスリット材支持体の内側板部の下端よりも内側に入らないので、スリット材本体の下面側での気泡や水溜りの発生を極力防止できる。なお、スリット材支持体は特許文献１の従来技術のような分割構造を採用していないので、コンクリート打設時に、その圧力で外れることもない。   In the horizontal slit material of the present invention, the method of constructing the horizontal joint using the same, and the structure of the horizontal joint, the slit material body is fitted to the U-shaped portion of the slit material support that opens downward. Therefore, it is possible to completely prevent the intrusion when placing concrete, and in some cases to minimize the penetration and secure a predetermined slit width. Further, by changing the vertical dimension of the slit material main body, it is easy to change the slit width formed in the horizontal joint portion. Furthermore, since the lower surface of the slit material body is formed on an inclined surface that rises as it goes from the outer mold frame to the inner mold frame, and the lower end of the rear side does not enter the inner side than the lower end of the inner plate part of the slit material support, Generation of bubbles and water pools on the lower surface side of the slit material body can be prevented as much as possible. In addition, since the slit material support body does not employ a split structure as in the prior art of Patent Document 1, it does not come off due to the pressure during concrete placement.

本発明に係る水平スリット材の一例を示す断面図である。It is sectional drawing which shows an example of the horizontal slit material which concerns on this invention. 図１に示す水平スリット材の分解斜視図である。It is a disassembled perspective view of the horizontal slit material shown in FIG. 本発明に係る水平スリット材を使用した水平打継部の施工方法を示す図である。It is a figure which shows the construction method of the horizontal joint part which uses the horizontal slit material which concerns on this invention. 本発明に係る水平スリット材を使用した水平打継部の施工方法を示す図である。It is a figure which shows the construction method of the horizontal joint part which uses the horizontal slit material which concerns on this invention. 本発明に係る水平スリット材を使用した水平打継部の施工方法を示す図である。It is a figure which shows the construction method of the horizontal joint part which uses the horizontal slit material which concerns on this invention. 本発明に係る水平スリット材を使用した水平打継部の施工方法を示す図である。It is a figure which shows the construction method of the horizontal joint part which uses the horizontal slit material which concerns on this invention. 本発明に係る水平スリット材の他の例を示す断面図である。It is sectional drawing which shows the other example of the horizontal slit material which concerns on this invention.

次に、本発明に係る水平スリット材、それを使用した水平打継部の施工方法及び水平打継部の構造の一例について、図面を参照しながら説明する。   Next, an example of the horizontal slitting material according to the present invention, a method for constructing a horizontal joint using the same, and a structure of the horizontal joint will be described with reference to the drawings.

≪水平スリット材≫
図１は本発明に係る水平スリット材の一例を示す断面図、図２は図１に示す水平スリット材１の分解斜視図である。この水平スリット材１は、外型枠２１と内型枠２３（図６参照。）との間にコンクリートを打設して形成される壁部の水平打継部に埋設されるもので、発泡ポリエチレン製等のスリット材本体１１と、スリット材本体１１を支持する塩化ビニル樹脂製等のスリット材支持体１２とからなる。スリット材支持体１２は、外型枠２１に固定した目地棒２２の上面に載置される先端部１２１と、先端部１２１と連続し目地棒２２の上面より高い位置に設けられた上面板部１２２と、目地棒２２の反対側の側面に当接する外側板部１２３と、外側板部１２３と対向するように内型枠側に設けられた内側板部１２４とを有し、これら上面板部１２２と外側板部１２３と内側板部１２４とにより、下方が開口した断面コ字状に形成されている。そして、このスリット材支持体１２の断面コ字状部分に、芯材となるスリット材本体１１を嵌合することで、水平スリット材１が構成される。その際、スリット材支持体１２の上面板部１２２がバネ性を発揮し、スリット材本体１１を外側板部１２３と内側板部１２４との間で挟持するので、無頭釘（図３以降参照。）で固定する前段階においても、安定した製品形状を保つことができる。また、スリット材支持体１２は下方が開口しているので、必要な寸法（設置したときの鉛直方向の長さ）に作製したスリット材本体１１を適宜選択することにより、スリット幅の変更に簡単に対応することができる。 ≪Horizontal slit material≫
FIG. 1 is a sectional view showing an example of a horizontal slit material according to the present invention, and FIG. 2 is an exploded perspective view of the horizontal slit material 1 shown in FIG. The horizontal slit material 1 is embedded in a horizontal joint portion of a wall portion formed by placing concrete between an outer mold frame 21 and an inner mold frame 23 (see FIG. 6). It comprises a slit material body 11 made of polyethylene or the like and a slit material support 12 made of a vinyl chloride resin or the like that supports the slit material body 11. The slit material support 12 includes a front end portion 121 placed on the upper surface of the joint rod 22 fixed to the outer mold 21, and an upper surface plate portion that is continuous with the front end portion 121 and is provided at a position higher than the upper surface of the joint rod 22. 122, an outer plate 123 that contacts the opposite side surface of the joint rod 22, and an inner plate 124 that is provided on the inner mold side so as to face the outer plate 123. 122, the outer side board part 123, and the inner side board part 124 are formed in the cross-sectional U-shape which opened below. And the horizontal slit material 1 is comprised by fitting the slit material main body 11 used as a core material in the cross-sectional U-shaped part of this slit material support body 12. As shown in FIG. At that time, the upper surface plate portion 122 of the slit material support 12 exhibits springiness, and the slit material main body 11 is sandwiched between the outer plate portion 123 and the inner plate portion 124. Stable product shape can be maintained even in the previous stage of fixing with. In addition, since the slit material support 12 is open at the bottom, it is easy to change the slit width by appropriately selecting the slit material body 11 produced to the required dimensions (vertical length when installed). It can correspond to.

ここで、スリット材支持体１２の先端部１２１は、外側板部１２３より外側に突出して目地棒２２上面に載置される先端第１底面部１２１ａと、先端第１底面部１２１ａと面一で外側板部１２３より内側に突出する先端第２底面部１２１ｂと、先端第１底面部１２１ａ先端から上面板部１２２の先端まで斜め上方に傾斜して立ち上がる先端傾斜面部１２１ｃと、先端第２底面部１２１ｂ後端から上面板部１２２裏面まで垂直に立設する先端垂直面部１２１ｄとからなる。また、先端部１２１とは反対側の上面板部１２２の後端には、上面板部１２２と直交する水返し板部１２５が設けられている。そして、水返し板部１２５の下端部には、先端第１底面部１２１ａ及び先端第２底面部１２１ｂと同じ高さで先端部１２１の方へ突出する後端第１底面部１２５ａと、それと同じ高さで内型枠２３（図６参照。）の方向へ突出して内側板部１２４に連続する後端第２底面部１２５ｂとを有する。このような形状により、スリット材支持体１２の断面コ字状部分に対して、上側面１１ｄが平らなスリット材本体１１を嵌入すると、図１に示すように先端垂直面部１２１ｄと、上面板部１２２下面と、水返し板部１２５の下端部と、スリット材本体１１の上側面１１ｄとの間に、空隙部１２６が形成される。   Here, the front end portion 121 of the slit material support 12 is flush with the front end first bottom surface portion 121a that protrudes outward from the outer plate portion 123 and is placed on the upper surface of the joint rod 22, and the front end first bottom surface portion 121a. A tip second bottom surface portion 121b that protrudes inward from the outer plate portion 123, a tip inclined surface portion 121c that rises obliquely upward from the tip of the tip first bottom surface portion 121a to the tip of the top surface plate portion 122, and a tip second bottom surface portion 121b includes a front end vertical surface portion 121d that stands vertically from the rear end to the back surface of the upper surface plate portion 122. Further, a water return plate portion 125 orthogonal to the upper surface plate portion 122 is provided at the rear end of the upper surface plate portion 122 on the side opposite to the front end portion 121. And the lower end part of the water return plate part 125 is the same as the rear end first bottom face part 125a protruding toward the tip part 121 at the same height as the first tip bottom face part 121a and the second tip bottom face part 121b. A rear end second bottom surface portion 125 b that protrudes in the direction of the inner mold frame 23 (see FIG. 6) at a height and continues to the inner plate portion 124 is provided. With such a shape, when the slit material body 11 having a flat upper side surface 11d is inserted into the U-shaped section of the slit material support 12, the tip vertical surface portion 121d and the upper surface plate portion as shown in FIG. A gap 126 is formed between the lower surface 122, the lower end of the water return plate 125, and the upper surface 11 d of the slit material body 11.

ここで、空隙部１２６の間隔ｈは、スリット材本体１１の厚さ（高さ）に較べて小さく設定する。この場合には、スリット材本体１１が存在する分だけ、従来の空隙部を主体とした水平スリット材の空隙部よりも大幅に小さくなり、端面における開口面積が減少するので、コンクリート打設時に懸念される端面からのノロ・骨材の侵入が最小限にとどまる。この空隙部１２６は、スリット部として、スリット材本体１１を補完する効果がある。さらに、この空隙部１２６の存在により、外側板部１２３と内側板部１２４の先端部間の間隔がスリット材本体１１の長さＬより若干小さくなるように、予めそれぞれ内側に幾分か傾斜した状態で成形すれば、スリット材本体１１をその断面コ字状部分に嵌入したとき、上面板部１２２のバネ性がより効果的に発揮され、スリット材本体１１を両側から挟持する力が高まる。また、これとは逆に、スリット材支持体１２の外側板部１２３と内側板部１２４を垂直状態に成形し、それらの間隔よりも幾分大きい寸法のスリット材本体１１を適用してもよい。スリット材本体１１は、そのままでは打設するコンクリートの圧力によって潰れるおそれがあるが、スリット材本体１１の３箇所の面が断面コ字状のスリット材支持体１２で包囲されているので、コンクリートの打設圧力によるスリット材本体１１の変形を最小限に抑え、設計通りのスリット幅を確保できる。なお、空隙部１２６は、本発明において必須要件ではない。   Here, the gap h between the gaps 126 is set smaller than the thickness (height) of the slit material body 11. In this case, since the slit material main body 11 is present, the gap portion of the horizontal slit material mainly composed of the conventional gap portion is significantly smaller, and the opening area at the end surface is reduced. Intrusion of noro and aggregate from the end face is minimized. This gap portion 126 has an effect of complementing the slit material body 11 as a slit portion. Further, due to the presence of the gap 126, the gap between the front end portions of the outer plate portion 123 and the inner plate portion 124 is somewhat inclined inward in advance so that the gap is slightly smaller than the length L of the slit material body 11. If it shape | molds in the state, when the slit material main body 11 is inserted in the cross-sectional U-shaped part, the spring property of the upper surface board part 122 will be exhibited more effectively, and the force which clamps the slit material main body 11 from both sides will increase. On the contrary, the outer plate portion 123 and the inner plate portion 124 of the slit material support 12 may be formed in a vertical state, and the slit material body 11 having a size somewhat larger than the distance between them may be applied. . Although the slit material body 11 may be crushed by the pressure of the concrete to be placed as it is, the three surfaces of the slit material body 11 are surrounded by the slit material support 12 having a U-shaped cross section. It is possible to minimize the deformation of the slit material body 11 due to the driving pressure and to secure the designed slit width. Note that the gap 126 is not an essential requirement in the present invention.

また、このスリット材支持体１２では、先端第２底面部１２１ｂの後端から先端垂直面部１２１ｄが立設する一方、後端第１底面部１２５ａの先端には垂直面部が立設していないことから、外側板部１２３よりも内側板部１２４の方が広がり（変形）しやすい。これにより、外側板部１２３と内側板部１２４の間隔Ｌより幾分か長いスリット材本体１１を断面コ字状部分に簡単に嵌入することが可能となる。なお、内側板部１２４の下端には、スリット材本体１１の傾斜下面１１ｃの傾斜角度αよりも大きい傾斜角度βで斜め上方に折り返され、下層階のコンクリート中に埋設されるアンカー部１２４ａが設けられている。そのため、下層階のコンクリートを打設した際、スリット材本体１１の傾斜下面１１ｃに沿って上昇した気泡や水溜りが、これに続くアンカー部１２４ａの裏面側から上方に難なく移動するので、水平スリット材１の下面側に気泡や水溜りが発生しなくなり、品質の高いコンクリート躯体を製造できる。ここで、アンカー部１２４ａの傾斜角度βは、スリット材本体１１の傾斜下面１１ｃの傾斜角度α以上、すなわちβ≧αの関係にして、アンカー部１２４ａ裏面側における気泡や水溜りの排出性を向上させているが、この関係になくても、上方に向けて傾斜していれば良い。   Further, in the slit material support 12, the front end vertical surface portion 121d is erected from the rear end of the front end second bottom surface portion 121b, while the vertical surface portion is not erected at the front end of the rear end first bottom surface portion 125a. Therefore, the inner side plate portion 124 is easier to expand (deform) than the outer side plate portion 123. As a result, it is possible to easily fit the slit material body 11 somewhat longer than the distance L between the outer plate portion 123 and the inner plate portion 124 into the U-shaped section. At the lower end of the inner plate portion 124, there is provided an anchor portion 124a that is folded back obliquely upward at an inclination angle β larger than the inclination angle α of the inclined lower surface 11c of the slit material body 11, and is embedded in the concrete of the lower floor. It has been. Therefore, when the concrete on the lower floor is placed, bubbles and water pools that have risen along the inclined lower surface 11c of the slit body 11 move without difficulty from the back side of the anchor portion 124a that follows the horizontal slit. Air bubbles and water pools are not generated on the lower surface side of the material 1, and a high-quality concrete frame can be manufactured. Here, the inclination angle β of the anchor portion 124a is equal to or larger than the inclination angle α of the inclined lower surface 11c of the slit material body 11, that is, β ≧ α, thereby improving the discharge of bubbles and water pools on the back surface side of the anchor portion 124a. However, even if it is not in this relationship, it may be inclined upward.

図２に示すように、このスリット材支持体１２では、内側板部１２４の長手方向に沿って、所定間隔で固定用の無頭釘を打ち込むための釘孔１２４ｂを設けている。これにより、無頭釘の打ち込みピッチを間違えたり、打ち込み忘れ等を防止する。その結果、水平スリット材１の曲がりや浮き上がりがなくなり、品質の良い施工が可能となる。また、内側板部１２４の長手方向に所定間隔で無頭釘が打ち込まれると、水平スリット材１全体の剛性が向上し、この点でも有効である。なお、釘孔１２４ｂは省略してもよい。   As shown in FIG. 2, the slit material support 12 is provided with a nail hole 124 b for driving a fixing headless nail at a predetermined interval along the longitudinal direction of the inner plate portion 124. This prevents mistakes in the driving pitch of the headless nails and forgetting to drive. As a result, the horizontal slit member 1 is not bent or lifted, and high-quality construction is possible. In addition, when headless nails are driven at predetermined intervals in the longitudinal direction of the inner plate portion 124, the rigidity of the entire horizontal slit member 1 is improved, which is also effective in this respect. The nail hole 124b may be omitted.

一方、スリット材本体１１は、スリット材支持体１２の外側板部１２３に当接する前側面１１ａと、スリット材支持体１２の内側板部１２４に当接し、且つ内側板部１２４の高さ以上の後側面１１ｂと、前側面１１ａから後側面１１ｂに向かうに従って傾斜角度αで上昇する傾斜下面１１ｃと、水平な上側面１１ｄを有している。すなわち、スリット材本体１１の傾斜下面１１ｃにより、水平スリット材１の下面側に水平部分が存在しなくなるので、水平スリット材１の下面側での気泡や水溜りの発生を極力防止することができる。   On the other hand, the slit material body 11 is in contact with the front side surface 11 a that contacts the outer plate portion 123 of the slit material support 12, the inner plate portion 124 of the slit material support 12, and more than the height of the inner plate portion 124. It has a rear side surface 11b, an inclined lower surface 11c that rises at an inclination angle α as it goes from the front side surface 11a to the rear side surface 11b, and a horizontal upper side surface 11d. That is, the inclined lower surface 11c of the slit material body 11 eliminates a horizontal portion on the lower surface side of the horizontal slit material 1, so that generation of bubbles and water pools on the lower surface side of the horizontal slit material 1 can be prevented as much as possible. .

≪水平スリット材１を使用した施工方法と水平打継部の構造≫
次に、本発明に係る水平スリット材１を使用した水平打継部の施工方法と水平打継部の構造について、図面を参照して説明する。 ≪Construction method using horizontal slit material 1 and structure of horizontal joint part≫
Next, the construction method of the horizontal joint part using the horizontal slit material 1 according to the present invention and the structure of the horizontal joint part will be described with reference to the drawings.

図３〜図６は、水平スリット材１を使用した水平打継部の施工方法及び構造の一例を示す図である。まず、図３に示すように、外型枠２１に固定した目地棒２２に対して、その上面にスリット材支持体１２の先端第１底面部１２１ａを載置しながら、側面に外側板部１２３を当接し、この状態で無頭釘３を内側板部１２４の表面から打ち込む。次に、図４に示すように、スリット材本体１１、外側板部１２３及び目地棒２２を貫通し、さらにその先端が外型枠２１の外側に突出することにより外型枠２１に固定された水平スリット材１に対して、目地棒２２の上面、すなわち内側板部１２４の上端部付近のレベルまでコンクリートを打設して下層階の梁部４とそれに連続するスラブを構築する。その際、スリット材支持体１２のコ字状部分にスリット材本体１１が嵌合し、空隙部１２６の間隔ｈが小さいので、空隙部１２６にコンクリートが侵入することがなくなり、スリット材本体１１と合わせて所定のスリット幅を確保できる。また、スリット材本体１１は、図１及び図２に示すように、外型枠２１から内型枠２３に向かうに従って上昇する傾斜下面１１ｃを有しているので、水平スリット材１の下面側に気泡や水溜りが発生しにくい。次に、図５に示すように、耐火材５２をスリット材５１，５３により挟んだ構造の別の水平スリット材５の先端を、スリット材支持体１２の水返し板部１２５に当接させつつ下層階の梁部４の上面に設置する。そして、図６に示すように、水平スリット材５の後端位置に合わせて内型枠２３を立設し、外型枠２１と内型枠２３との間にさらにコンクリートを打設して上層階の壁部６を構築する。   3-6 is a figure which shows an example of the construction method and structure of a horizontal joint part which uses the horizontal slit material 1. FIG. First, as shown in FIG. 3, the outer plate portion 123 is mounted on the side surface of the joint rod 22 fixed to the outer mold frame 21 while the front end first bottom surface portion 121 a of the slit material support 12 is placed on the upper surface thereof. In this state, the headless nail 3 is driven from the surface of the inner plate portion 124. Next, as shown in FIG. 4, the slit member main body 11, the outer side plate portion 123, and the joint rod 22 are penetrated, and the tip of the slit member 11 is fixed to the outer mold frame 21 by projecting to the outside of the outer mold frame 21. Concrete is cast on the horizontal slit member 1 to the upper surface of the joint rod 22, that is, the level near the upper end of the inner plate portion 124, thereby constructing the beam portion 4 on the lower floor and the slab continuous therewith. At that time, the slit material body 11 is fitted to the U-shaped portion of the slit material support 12 and the gap h between the gap portions 126 is small, so that the concrete does not enter the gap portion 126, and the slit material body 11 and In addition, a predetermined slit width can be secured. Further, as shown in FIGS. 1 and 2, the slit material main body 11 has an inclined lower surface 11 c that rises from the outer mold frame 21 toward the inner mold frame 23. Air bubbles and water pools are unlikely to occur. Next, as shown in FIG. 5, the tip of another horizontal slit material 5 having a structure in which the refractory material 52 is sandwiched between the slit materials 51 and 53 is brought into contact with the water return plate portion 125 of the slit material support 12. Installed on the upper surface of the beam section 4 on the lower floor. Then, as shown in FIG. 6, the inner mold frame 23 is erected in accordance with the rear end position of the horizontal slit member 5, and concrete is further placed between the outer mold frame 21 and the inner mold frame 23 to raise the upper layer. Build the wall 6 on the floor.

なお、この水平スリット材１において、スリット幅をより大きくしようとする場合は、図７（ａ）に示すように、高さの高いスリット材本体１１を適用すれば良い。本発明によれば、スリット幅を変更する場合でも、一種類のスリット材支持体１２により対応することができるので、金型コストや製品在庫を低減できる。また、図７（ｂ）に示すように、後端第１底面部１２５ａの先端から上面板部１２２の下面側まで立設する後端垂直面部１２５ｃを設けるようにしても良い。この場合、後端垂直面部１２５ｃを設けない場合よりも内側板部１２４の剛性が増し、先端垂直面部１２１ｄが立設されている外側板部１２３と、後端垂直面部１２５ｃが立設されている内側板部１２４との間で外側への広がりに対する変形性能がほぼ同じになり、バランスのとれた挟持力でスリット材本体１１を挟持することが可能となる。また、図７（ｃ）に示すように、後端第１底面部１２５ａ自体を省略することもできる。この場合でも、後端第２底面部１２５ｂがあるので、スリット材支持体１２のコ字状部分にスリット材本体１１を嵌入した際、スリット材本体１１の上面後端は後端第２底面部１２５ｂに当接するので、スリット材本体１１の挟持に問題はない。   In addition, in this horizontal slit material 1, when trying to make a slit width larger, as shown to Fig.7 (a), what is necessary is just to apply the slit material main body 11 with high height. According to the present invention, even when the slit width is changed, one type of slit material support 12 can be used, so that the mold cost and product inventory can be reduced. Further, as shown in FIG. 7B, a rear end vertical surface portion 125c standing from the front end of the rear end first bottom surface portion 125a to the lower surface side of the upper surface plate portion 122 may be provided. In this case, the rigidity of the inner plate portion 124 is increased as compared with the case where the rear end vertical surface portion 125c is not provided, and the outer plate portion 123 where the front end vertical surface portion 121d is erected and the rear end vertical surface portion 125c are erected. The deformation performance with respect to outward spreading is substantially the same between the inner plate portion 124 and the slit material main body 11 can be clamped with a balanced clamping force. Moreover, as shown in FIG.7 (c), the rear end 1st bottom face part 125a itself can also be abbreviate | omitted. Even in this case, since there is the rear end second bottom surface portion 125b, when the slit material body 11 is inserted into the U-shaped portion of the slit material support 12, the rear upper surface of the slit material body 11 is the rear end second bottom surface portion. Since it abuts on 125b, there is no problem in clamping the slit material body 11.

１…水平スリット材、１１…スリット材本体、１１ａ…前側面、１１ｂ…後側面、１１ｃ…傾斜下面、１２…スリット材支持体、１２１…先端部、１２２…上面板部、１２３…外側板部、１２４…内側板部、１２４ａ…アンカー部、１２５…水返し板部、２１…外型枠、２２…目地棒、２３…内型枠、３…無頭釘、４…下層階の梁部、５…水平スリット材、６…上層階の壁部。   DESCRIPTION OF SYMBOLS 1 ... Horizontal slit material, 11 ... Slit material main body, 11a ... Front side surface, 11b ... Rear side surface, 11c ... Inclined lower surface, 12 ... Slit material support body, 121 ... Front-end | tip part, 122 ... Upper surface plate part, 123 ... Outer plate part 124 ... Inner plate part, 124a ... Anchor part, 125 ... Water return plate part, 21 ... Outer mold, 22 ... Joint rod, 23 ... Inner mold, 3 ... Headless nail, 4 ... Beam part of lower floor, 5 ... Horizontal slit material, 6 ... Wall of upper floor.

Claims (6)

外型枠と内型枠との間にコンクリートを打設して形成される壁部の水平打継部に埋設する水平スリット材であって、スリット材本体と、そのスリット材本体を支持するスリット材支持体とからなり、前記スリット材支持体は、外型枠に固定した目地棒の上面に載置される先端部と、その先端部と連続し他端側に向けて設けられた上面板部と、それら先端部または上面板部の下面側に設けられ目地棒の側面に当接する外側板部と、その外側板部と対向するように上面板部の他端側において下面側に設けられた内側板部とを有する一方、前記スリット材本体は、前記スリット材支持体の外側板部に当接する前側面と、その内側板部に当接すると共にその内側板部の高さ以上の後側面と、前側面から後側面に向けて上昇する傾斜下面とを有し、該スリット材本体が前記スリット材支持体の外側板部と上面板部と内側板部とにより形成される下方開口のコ字状部分に対して、その傾斜下面が埋没しない状態で嵌合されることを特徴とする水平スリット材。   A horizontal slit material embedded in a horizontal joint portion of a wall portion formed by placing concrete between an outer mold frame and an inner mold frame, and a slit material body and a slit that supports the slit material body The slit material support includes a tip portion placed on the upper surface of the joint rod fixed to the outer mold frame, and an upper surface plate that is continuous with the tip portion and provided toward the other end side. Provided on the lower surface side at the other end side of the upper surface plate portion so as to face the outer plate portion, the outer plate portion provided on the lower surface side of the tip portion or the upper surface plate portion and contacting the side surface of the joint rod. The slit material body includes a front side surface that contacts the outer side plate portion of the slit material support, and a rear side surface that contacts the inner side plate portion and is equal to or higher than the height of the inner side plate portion. And an inclined lower surface rising from the front side surface toward the rear side surface. The base material body is fitted to the U-shaped portion of the lower opening formed by the outer plate portion, the upper plate portion, and the inner plate portion of the slit material support in a state where the inclined lower surface is not buried. Horizontal slit material characterized by this. 請求項１記載の水平スリット材において、前記スリット材支持体の上面板部下面と前記スリット材本体上面との間に、空隙部を設けることを特徴とする水平スリット材。   2. The horizontal slit material according to claim 1, wherein a gap is provided between the lower surface of the upper surface of the slit material support and the upper surface of the slit material main body. 請求項１記載または請求項２記載の水平スリット材において、前記スリット材支持体の上面板部が、目地棒の上面より高い位置に設けられることを特徴とする水平スリット材。   The horizontal slit material according to claim 1 or 2, wherein an upper surface plate portion of the slit material support is provided at a position higher than an upper surface of the joint rod. 請求項１〜請求項３のいずれか一の請求項に記載の水平スリット材において、前記スリット材支持体の内側板部の下端に、スリット材本体下面よりも上方に傾斜するアンカー部を設けたことを特徴とする水平スリット材。   In the horizontal slit material according to any one of claims 1 to 3, an anchor portion that is inclined upward from the lower surface of the slit material main body is provided at the lower end of the inner plate portion of the slit material support. Horizontal slit material characterized by this. 請求項１〜請求項４のいずれか一の請求項に記載の水平スリット材を、外型枠に固定された目地棒の上面に、そのスリット材支持体の先端部を載置した状態で固定し、前記目地棒の上面レベルまでコンクリートを打設して下層階の梁部を構築した後、上面板部より内側の梁部上面に別のスリット材を設置した状態でさらにコンクリートを打設して上層階の壁部を構築することを特徴とする水平打継部の施工方法。   The horizontal slit member according to any one of claims 1 to 4 is fixed in a state where the tip of the slit member support is placed on the upper surface of the joint rod fixed to the outer mold. After the concrete is cast to the upper surface level of the joint rod to construct the lower floor beam portion, the concrete is further cast with another slit material installed on the upper surface of the beam portion inside the upper surface plate portion. The construction method of the horizontal joint part characterized by constructing the wall part of the upper floor. 請求項１〜請求項４のいずれか一の請求項に記載の水平スリット材を、外型枠に固定された目地棒の上面に、そのスリット材支持体の先端部を載置した状態で固定し、前記目地棒の上面レベルまでコンクリートを打設して下層階の梁部を構築した後、上面板部より内側の梁部上面に別のスリット材を設置した状態でさらにコンクリートを打設して上層階の壁部を構築したことを特徴とする水平打継部の構造。   The horizontal slit member according to any one of claims 1 to 4 is fixed in a state where the tip of the slit member support is placed on the upper surface of the joint rod fixed to the outer mold. After the concrete is cast to the upper surface level of the joint rod to construct the lower floor beam portion, the concrete is further cast with another slit material installed on the upper surface of the beam portion inside the upper surface plate portion. The structure of the horizontal joint is characterized by the construction of the upper floor.
JP2011176212A 2011-08-11 2011-08-11 Horizontal slit material, construction method of horizontal joint using the same, and structure of horizontal joint Active JP5746588B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2011176212A JP5746588B2 (en) 2011-08-11 2011-08-11 Horizontal slit material, construction method of horizontal joint using the same, and structure of horizontal joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011176212A JP5746588B2 (en) 2011-08-11 2011-08-11 Horizontal slit material, construction method of horizontal joint using the same, and structure of horizontal joint

Publications (2)

Publication Number Publication Date
JP2013040451A JP2013040451A (en) 2013-02-28
JP5746588B2 true JP5746588B2 (en) 2015-07-08

Family

ID=47889074

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2011176212A Active JP5746588B2 (en) 2011-08-11 2011-08-11 Horizontal slit material, construction method of horizontal joint using the same, and structure of horizontal joint

Country Status (1)

Country Link
JP (1) JP5746588B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109025266A (en) * 2018-07-31 2018-12-18 中国二十二冶集团有限公司 Construction Joints of Cast-in-place Concrete construction formwork and its construction method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6362474B2 (en) * 2013-09-04 2018-07-25 アクシス株式会社 Horizontal slit material and horizontal slit structure using the same

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5910406U (en) * 1982-07-10 1984-01-23 畑中　豊 joint material
JPS6089315U (en) * 1983-11-21 1985-06-19 エキスパンウオール株式会社 Concrete building wall structure
JP2000336927A (en) * 1999-05-28 2000-12-05 Akushisu Kk Tool for forming slant concrete joint-placed surface
JP4627593B2 (en) * 2000-12-20 2011-02-09 岡部株式会社 Horizontal slitting material support
JP5000422B2 (en) * 2007-08-09 2012-08-15 アクシス株式会社 Jointing member and joint structure
JP5057940B2 (en) * 2007-11-21 2012-10-24 アクシス株式会社 Structure of jointing member and horizontal jointing part
JP3150273U (en) * 2009-02-20 2009-05-07 藤和不動産株式会社 The drainage structure of joints on the outer walls of concrete buildings

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109025266A (en) * 2018-07-31 2018-12-18 中国二十二冶集团有限公司 Construction Joints of Cast-in-place Concrete construction formwork and its construction method
CN109025266B (en) * 2018-07-31 2021-04-30 中国二十二冶集团有限公司 Construction template for cast-in-situ concrete structure construction joint and construction method thereof

Also Published As

Publication number Publication date
JP2013040451A (en) 2013-02-28

Similar Documents

Publication Publication Date Title
KR101880490B1 (en) Structure Of Connecting Colum And Composite Beam For Deep Deck
KR101638093B1 (en) Rahmen using hinge type pc wall and method for constructing the same
JP4851881B2 (en) Embankment structure and method for reinforcing embankment structure
JP5746588B2 (en) Horizontal slit material, construction method of horizontal joint using the same, and structure of horizontal joint
JP2010070903A (en) Precast concrete foundation material and method for connecting the same
KR101948812B1 (en) Hybrid Beam Consisted Of Compressive U-Shaped Flange And U And H-Shaped End Blocks
JP2006257718A (en) Supporting metal fitting of thermal insulating material
KR101867512B1 (en) Shear reinforcement for reinforced concrete structure
KR100830238B1 (en) Formed steel beam for steel-concrete composite beam and slab
KR102127192B1 (en) Retaining wall reinforced load resistance, and manufacturing method thereof
JP5756398B2 (en) Formwork unit, residual formwork and wall height for bridge
KR20160003049U (en) Signed slab formwork panels for roofs
JP4286213B2 (en) Formwork concrete block construction
KR101298399B1 (en) Support for a upper reinforcing bar of footings
JP6878128B2 (en) Joining structure between wall balustrades
JP5062713B2 (en) Support structure for vertical slit material
JP2005213852A (en) Foundation block for guardrail
KR20160043501A (en) A sump or elevator pit under structure
JP2007247220A (en) Mounting structure of alc wall panel
JP2006169764A (en) Foamed resin block with plate member for banking, and lightweight banking structure using the same
WO2017056602A1 (en) Method for constructing concrete foundation top end, and top end form
KR102333185B1 (en) A Mold for Bathroom Floor
CN214577057U (en) Reverse bevel angle construction supporting structure for arch foot part of urban subway underground excavation station
JP2008150820A5 (en)
JP5548637B2 (en) Construction method of underground beam

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20140605

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20150310

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20150421

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20150508

R150 Certificate of patent or registration of utility model

Ref document number: 5746588

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250