JP3148433U - Residual formwork - Google Patents
Residual formwork Download PDFInfo
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- JP3148433U JP3148433U JP2008008406U JP2008008406U JP3148433U JP 3148433 U JP3148433 U JP 3148433U JP 2008008406 U JP2008008406 U JP 2008008406U JP 2008008406 U JP2008008406 U JP 2008008406U JP 3148433 U JP3148433 U JP 3148433U
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- plate body
- steel
- concrete
- shape steel
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- 238000009415 formwork Methods 0.000 title abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 59
- 239000010959 steel Substances 0.000 claims abstract description 59
- 238000010079 rubber tapping Methods 0.000 claims description 8
- 238000000576 coating method Methods 0.000 description 10
- 239000011248 coating agent Substances 0.000 description 8
- 238000004070 electrodeposition Methods 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 150000001768 cations Chemical class 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Landscapes
- Foundations (AREA)
- Retaining Walls (AREA)
Abstract
【課題】残存型枠を枠組する際に、形鋼の変形がなく、打設コンクリートの側圧にも充分耐え枠組状態を確保でき、且つ、残存型枠の全体に打設コンクリートが充填し、空洞を生じることがない残存型枠を提供することを目的とする。【解決手段】コンクリート製で四角形状のプレート本体と、該プレート本体内に埋設する網状体と、該網状体と固着すると共にプレート本体の裏面から一部露出する形鋼とから成り、且つ、形鋼は、その断面形状が略コの字状であり、プレート本体の左右あるいは上下の両端側に少なくとも2本を平行に配置し、形鋼の開口面側を網状体と固着させると共にプレート本体内に埋設し、平板部側をプレート本体の裏面から突出させ、形鋼の側面部に多数の貫通穴を穿設すると共に、平板部の両端側に多数のネジ用締着手段を設ける。【選択図】図1[PROBLEMS] To frame a remaining formwork without deformation of the shape steel, sufficiently tolerate the lateral pressure of the placed concrete, and to ensure a framed state, and the entire remaining formwork is filled with the cast concrete, It aims at providing the residual formwork which does not produce. A rectangular plate body made of concrete, a mesh body embedded in the plate body, a shape steel fixed to the mesh body and partially exposed from the back surface of the plate body, and having a shape The cross-sectional shape of steel is approximately U-shaped, and at least two are arranged in parallel on both the left and right or upper and lower ends of the plate body, and the opening side of the shaped steel is fixed to the mesh body and the inside of the plate body The flat plate portion is protruded from the back surface of the plate body, a large number of through holes are formed in the side surface portion of the shape steel, and a plurality of screw fastening means are provided on both ends of the flat plate portion. [Selection] Figure 1
Description
本考案はコンクリート製の構造物を施工する際に、そのものが構造物のコンクリート打設用の型枠として枠組され、打設コンクリートが固化後にコンクリート構造物の表面にそのまま残存するタイプの残存型枠に関する。 In the present invention, when a concrete structure is constructed, it remains as a formwork for the concrete casting of the structure, and the cast concrete remains on the surface of the concrete structure after solidification. About.
従来、コンクリート製の構造物を施工する際に、構造物のコンクリート打設用の型枠として枠組し、打設コンクリートが固化後にコンクリート表面に固着し残存して型枠を取り外すことのないコンクリート製の残存型枠が知られている。この残存型枠を枠組する際に、並べて段積した残存型枠は上下及び左右の接続を連結金具で固定しながら行っていた。 Conventionally, when constructing a concrete structure, it is framed as a formwork for placing concrete in the structure, and the cast concrete is fixed to the concrete surface after solidification and remains without removing the formwork. The remaining formwork is known. When the remaining molds were framed, the remaining molds that were stacked side by side were connected while fixing the upper and lower and left and right connections with connecting fittings.
そして、この残存型枠としては、コンクリート製のプレートであり、その内部に埋設した補強用の網状体と、該網状体に固着しプレートの裏面から断面L字状の一部を露出する溝形鋼であり、この溝形鋼は四角状に枠組させたものである。 And as this remaining formwork, it is a concrete plate, and a reinforcing mesh embedded in the interior, and a groove shape that is fixed to the mesh and exposes a part of the L-shaped section from the back surface of the plate It is a steel, and this channel steel is a rectangular frame.
この残存型枠を枠組する際に、簡単に連結金具でもって強固に連結可能とする残存型枠については本考案者が特開2003−96799号で提案したところである。この特開2003−96799号における残存型枠の構成は、露出する部分の形鋼がプレート本体の裏面と平行な平板部を有し、該平板部に多数のネジ用穴を穿設したものである。そして、このネジ用穴を利用し、段積した残存型枠を連結プレートで連結し確実な枠組を可能とするものであった。
しかしながら、前記特開2003−96799号の残存型枠においては、プレート本体の裏面から露出する形鋼の断面形状がL字状であり、その露出した平板部にネジ用穴を穿設させている。しかも、この平板部はプレート本体の裏面と平行で、その幅に対し片側の側面部のみで支持された片持状態のものである。従って、このような片側支持の平板部にネジ用穴を穿設した場合には、このネジ用穴を利用してプレート本体の枠組を行った後に、生コンクリートを打設すると、打設コンクリートの側圧が枠組したプレート本体に加わり、その側圧が支持棒,連結金具及びネジ用穴に螺合させたネジ等を介して平板部に作用する。すると、片持状態の平板部は側圧によりめくられて変形を起こし、枠組したプレート本体の全体がゆがんで波を打つ状態となる。その結果、打設コンクリートが流出したり、コンクリート固化後の構造物の表面がゆがんだりし見栄えの悪いものとなる等の問題点を有していた。また上記の問題点を解消するのに使用する形鋼の厚さを増加させればよいが、この場合には、残存型枠全体の重量が増加し、運搬や枠組作業に支障をきたし、製造コスト的にも不利となる等の問題点が残る。また、形鋼が四角状に枠組されているため、打設コンクリートが四角状に囲まれた形鋼の枠内に完全に充填されず、これによりコンクリート構造物内に空洞が生じ、コンクリート構造物に弱い部分が存在すると共に、施工現場で枠組する際に構造物の形状に合せてプレート本体を切断する場合にも、形鋼が四角状に枠組されているため、形鋼をも切断しなければならず、プレート本体の切断に時間を要する等の問題点を有していた。 However, in the remaining form of JP-A-2003-96799, the cross-sectional shape of the shape steel exposed from the back surface of the plate body is L-shaped, and a screw hole is formed in the exposed flat plate portion. . In addition, the flat plate portion is parallel to the back surface of the plate main body and is in a cantilever state supported by only one side surface portion with respect to its width. Therefore, when a screw hole is drilled in such a flat plate portion of one side support, after placing the frame of the plate body using this screw hole and placing the ready-mixed concrete, A lateral pressure is applied to the framed plate body, and the lateral pressure acts on the flat plate portion via a support rod, a connecting fitting, a screw screwed into a screw hole, and the like. Then, the flat plate portion in the cantilever state is turned and deformed by the side pressure, and the entire plate body that is framed is distorted and waved. As a result, there have been problems such as casting concrete flowing out, and the surface of the structure after the solidification of the concrete is distorted, resulting in a poor appearance. In addition, it is sufficient to increase the thickness of the shape steel used to solve the above problems, but in this case, the weight of the entire remaining formwork increases, which hinders transportation and frame work, and manufacture. Problems such as cost disadvantages remain. In addition, because the shape steel is framed in a square shape, the cast concrete is not completely filled into the frame of the shape steel surrounded by the square shape, thereby creating a cavity in the concrete structure, and the concrete structure When the plate body is cut according to the shape of the structure when it is framed at the construction site, the shape steel is framed in a square shape, so the shape steel must also be cut. In other words, there was a problem that it took time to cut the plate body.
本考案は上記の問題点に鑑み、残存型枠を枠組する際に、軽溝形鋼を使用しても形鋼の変形がなく、打設コンクリートの側圧にも充分耐え枠組状態を確保でき、且つ、残存型枠の全体に打設コンクリートが充填し、コンクリート内に空洞を生じることがない残存型枠を提供することを目的とする。 In view of the above problems, the present invention has no deformation of the shape steel even when using the light groove shape steel when framing the remaining formwork, can sufficiently withstand the lateral pressure of the cast concrete, and can ensure the framework state. Another object of the present invention is to provide a residual mold that fills the entire remaining formwork with cast concrete and does not form a cavity in the concrete.
本考案の他の目的は、施工現場でのプレート本体の切断が簡単となる残存型枠を提供することである。 Another object of the present invention is to provide a remaining mold that makes it easy to cut the plate body at the construction site.
本考案の残存型枠は、コンクリート製で四角形状のプレート本体(1)と、該プレート本体(1)内に埋設する網状体(2)と、該網状体(2)と固着すると共に前記プレート本体(1)の裏面(1a)から一部露出する形鋼(3)とから成る。しかも、前記形鋼(3)は、その断面形状が略コの字状であり、前記プレート本体(1)の左右の少なくとも両端側に、2本を平行に配置し、前記形鋼(3)の開口面(3a)側を前記網状体(2)と固着させると共に前記プレート本体(1)内に埋設し、平板部(3b)側を前記プレート本体(1)の裏面(1a)から突出させ、且つ、前記形鋼(3)の側面部(3d)に多数の貫通穴(3e)を穿設すると共に、該貫通穴(3e)は略半分を前記プレート本体(1)に埋設し、且つ、前記形鋼(3)の平板部(3b)に多数のネジ用締着手段(3c)を等間隔で設けることを特徴とする。 The remaining form of the present invention is made of concrete and has a rectangular plate body (1), a mesh body (2) embedded in the plate body (1), and the mesh body (2). It consists of a section steel (3) partially exposed from the back surface (1a) of the main body (1). Moreover, the shape steel (3) has a substantially U-shaped cross-section, and is arranged in parallel at least on both the left and right sides of the plate body (1), and the shape steel (3) The opening surface (3a) side of the plate is fixed to the mesh body (2) and embedded in the plate body (1), and the flat plate portion (3b) side is projected from the back surface (1a) of the plate body (1). A plurality of through holes (3e) are formed in the side surface (3d) of the section steel (3), and approximately half of the through holes (3e) are embedded in the plate body (1), and A large number of screw fastening means (3c) are provided at equal intervals on the flat plate portion (3b) of the shape steel (3).
前記ネジ用締着手段(3c)が、タッピンネジ用の下穴であるとよい。 The screw fastening means (3c) may be a pilot hole for a tapping screw.
前記ネジ用締着手段(3c)が、ナットを装着させるのが好ましい。 The screw fastening means (3c) is preferably attached with a nut.
本考案は、形鋼(3)がプレート本体(1)の左右の少なくとも両端側に、2本を平行に配置したことにより、枠組した状態での打設コンクリートが形鋼(3)の配置されていないプレート本体(1)の上下方向から容易に流入し、プレート本体(1)の裏面全域にわたって流入され、打設コンクリートとプレート本体(1)の裏面との密着性が極めて高く、内部に空洞が発生することもない。また、形鋼(3)を平行に配置し、従来のように四角状に枠組されていないため、プレート本体(1)を施工現場で構造物の形状に合せて切断する際に、形鋼(3)を切断することなくプレート本体(1)を切断することができ、切断に要する手間が掛からず枠組が簡単となる。 In the present invention, the shape steel (3) is arranged in parallel at least on both the left and right sides of the plate body (1), so that the cast concrete in a framed state is arranged in the shape steel (3). It flows in easily from the vertical direction of the plate body (1) that is not, flows in across the entire back surface of the plate body (1), and the adhesion between the cast concrete and the back surface of the plate body (1) is extremely high, and it is hollow inside Does not occur. In addition, since the shape steel (3) is arranged in parallel and is not framed like a conventional shape, when the plate body (1) is cut at the construction site according to the shape of the structure, the shape steel ( The plate body (1) can be cut without cutting 3), and the framework is simplified without the effort required for cutting.
本考案は、断面形状が略コの字状の形鋼(3)が、開口面(3a)側を網状体(2)と固着させてプレート本体(1)内に埋設し、平板部(3b)側をプレート本体(1)の裏面(1a)から突出させたことにより、突出した平板部(3b)は両側面部(3d)で両端支持された状態であるから、平板部(3b)に設けたネジ用締着手段(3c)の部分がコンクリート打設時に強く引張られても、平板部(3b)の変形が起こり難い。従って、形鋼(3)は軽量形鋼が使用できるので残存型枠全体の軽量化を可能とし、且つ、コンクリート打設時に平板部(3b)の変形がないため、枠組した残存型枠表面が波打つようなことを防止できる。 In the present invention, a section steel (3) having a substantially U-shaped cross section is embedded in the plate body (1) with the opening surface (3a) side fixed to the mesh body (2), and a flat plate portion (3b ) Side is projected from the back surface (1a) of the plate body (1), and the projecting flat plate (3b) is supported at both ends by both side surfaces (3d). Even if the portion of the screw fastening means (3c) is pulled strongly when the concrete is placed, the flat plate portion (3b) is hardly deformed. Therefore, since the shape steel (3) can be a lightweight shape steel, it is possible to reduce the weight of the entire remaining formwork, and since there is no deformation of the flat plate (3b) when placing concrete, It can prevent undulations.
又、形鋼(3)の側面部(3d)に多数の貫通穴(3e)を穿設したことにより、枠組した形鋼(3)の内部に打設コンクリートが充填され、プレート本体(1)と構造物との結合性を高めると共に形鋼(3)の強度も増す。 Moreover, by placing a large number of through holes (3e) in the side surface (3d) of the shaped steel (3), the cast concrete is filled into the framed shaped steel (3), and the plate body (1) As well as improving the bondability between the steel and the structure, the strength of the shape steel (3) is also increased.
更に、穿設させた貫通穴(3e)は、その一部をプレート本体(1)内に埋設させることができ、その場合には、プレート本体(1)と形鋼(3)との結合が強固となり、形鋼(3)が引張られても抜け防止の役目を成し、且つ、プレート本体(1)から露出した部分の貫通穴(3e)には打設コンクリートが入り込むため、プレート本体(1)と構造物との結合性も高くなる。 Furthermore, a part of the drilled through hole (3e) can be embedded in the plate body (1). In this case, the connection between the plate body (1) and the shape steel (3) is not possible. Even if the shape steel (3) is pulled, it will serve to prevent it from pulling out, and the cast concrete will enter the through hole (3e) exposed from the plate body (1). The bondability between 1) and the structure is also increased.
又、ネジ用締着手段(3c)が、タッピンネジ用の下穴にすることにより、ネジ用締着手段(3c)の加工が容易であると共に、枠組の際にプレート本体(1)の連結固定でタッピンネジが使用でき枠組の作業性を高める。 The screw fastening means (3c) is a pilot hole for tapping screws, so that the screw fastening means (3c) can be easily processed and the plate body (1) can be connected and fixed during frame assembly. The tapping screw can be used to improve the workability of the frame.
又、ネジ用締着手段(3c)が、ナットを装着したものは、ボルトの使用ができ、プレート本体(1)の枠組において、強固な枠組ができる。 In addition, if the screw fastening means (3c) is equipped with a nut, a bolt can be used, and a strong frame can be formed in the frame of the plate body (1).
以下、本考案の実施形態を図を基に説明する。図1は本考案の残存型枠を示す全体斜視図、図2は本考案の網状体と形鋼を示す斜視図、図3は本考案の断面図、図4は本考案の使用状態を示す部分説明図、図5は本考案のネジ用締着手段がナットを示す説明図である。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an overall perspective view showing a remaining mold of the present invention, FIG. 2 is a perspective view showing a mesh body and a shaped steel of the present invention, FIG. 3 is a sectional view of the present invention, and FIG. FIG. 5 is an explanatory view showing a nut as a screw fastening means of the present invention.
以下図1〜図3に基づき本考案の実施形態を説明する。先ず以下図において、(1)はコンクリート製のプレート本体である。このプレート本体(1)は一定の厚さと面積でコンクリートを硬化させたプレート状のものであり、前記コンクリートとしては一般のポルトランドセメントに適量の砂等の骨材を混入させ硬化したもの、あるいは単にレジンコンクリートや特殊シリカセメントだけで硬化したもの等を多く使用するが、硬化したコンクリートに低粘度のビニール系モノマーを含浸、重合させたり、コンクリートに金属短繊維を混入し硬化させ、その中に低粘度のビニール系ポリマーを含浸、重合して耐久性及び機械的強度を著しく向上させたものを用いてもよい。又、プレート本体(1)の表面は見栄えを良くするために、通常は擬石風の化粧仕上を施して化粧部(1b)が形成されるが、使用場所によっては化粧仕上が必要ないので化粧部(1b)を形成しないこともある。尚、プレート本体(1)の側面全周には、段積する際に重ね部分から打設コンクリートが漏れ出すのを防止するためコーキング剤を注入するこの溝(1c)を設けるとよい。 Embodiments of the present invention will be described below with reference to FIGS. First, in the drawings, (1) is a concrete plate body. This plate body (1) is a plate-like material in which concrete is hardened with a constant thickness and area. As the concrete, it is hardened by mixing an appropriate amount of aggregate such as sand in general Portland cement, or simply Resin concrete or hardened only with special silica cement is often used, but the hardened concrete is impregnated with a low-viscosity vinyl monomer and polymerized, or mixed with short metal fibers and hardened. You may use what impregnated and polymerized the vinyl polymer of a viscosity and improved durability and mechanical strength remarkably. In addition, in order to improve the appearance of the plate body (1), the decorative part (1b) is usually formed by applying a pseudo stone-like cosmetic finish. (1b) may not be formed. In addition, it is good to provide this groove | channel (1c) which inject | pours a caulking agent in order to prevent the cast concrete from leaking out from the overlap part, when laminating | stacking, on the whole side surface periphery of a plate main body (1).
(2)はプレート本体(1)の内部に全部が埋設された網状体であり、該網状体(2)はプレート本体(1)を補強するためのものである。また前記網状体(2)には表面処理した金網,抜穴金網板が用いられ、特にエキスパンドメタルが特有な網目形状からして強度的な面、プレート本体(1)との結合性及び安価の面で使用するのが好ましい。又、網状体(2)の表面処理としてはメッキ処理,塗装処理等を施す。この時、ダブルコートカチオン電着塗装を施すと、防錆効果が極めて高く特に好ましいものとなる。尚、このダブルコートカチオン電着塗装とは、従来のカチオン電着塗装を2回行う塗装方法であり、これは従来1回のカチオン電着塗装では塗装される物の塗面の平滑性を求めるとエッジ部の塗装がされず、この耐エッジ部の防食性と塗面平滑性を解消するための塗装方法である。即ち、第1回の電着では耐エッジ防食性だけの機能を持たせ、それによって生じる塗面平滑性の低下は第2回の電着によってカバーしようとするものである。このダブルコートカチオン電着塗装では、網状体(2)がエキスパンドメタルである場合に、そのエッジ部が特に多いため、そのエッジ部の塗装を良く行える極めて有効な防錆効果であり、耐久性を高める。 (2) is a net-like body entirely embedded in the plate body (1), and the net-like body (2) is for reinforcing the plate body (1). The mesh body (2) is made of a surface-treated wire mesh or a perforated wire mesh plate. Particularly, the expanded metal has a special mesh shape and is strong in terms of strength, connectivity with the plate body (1) and inexpensive. It is preferable to use it on the surface. Further, as the surface treatment of the mesh body (2), plating treatment, painting treatment, etc. are performed. At this time, when a double coat cationic electrodeposition coating is applied, the rust prevention effect is extremely high, which is particularly preferable. The double-coat cation electrodeposition coating is a coating method in which the conventional cation electrodeposition coating is performed twice, and this requires the smoothness of the coating surface of the object to be coated in the conventional one cation electrodeposition coating. This is a coating method for eliminating the anti-corrosion property and smoothness of the coated surface of the edge-resistant portion without coating the edge portion. That is, in the first electrodeposition, only the edge anticorrosion resistance is provided, and the resulting decrease in the smoothness of the coating surface is intended to be covered by the second electrodeposition. In this double coat cationic electrodeposition coating, when the mesh (2) is an expanded metal, the edge portion is particularly large. Increase.
(3)は断面コの字状の軽溝形鋼を用い、プレート本体(1)の左右の両端側に2本を平行に配置した形鋼であり、図2に示すように、この形鋼(3)の開口面(3a)側を網状体(2)に固着可能に枠組させている。そして、この形鋼(3)は開口面(3a)側で網状体(2)に溶接して固着させ、この網状体(2)全体と形鋼(3)の略半分がプレート本体(1)内に埋設され、形鋼(3)の他の部分はプレート本体(1)の裏面(1a)から突出させる。その突出した平板部(3b)は、プレート本体(1)の裏面(1a)と平行な面であり、両側面部(3d)で支持された状態となる。又、両側面部(3d)は互いに平行なものとは限らず、網状体(2)側に向って開いた状態のものでもよい。尚、形鋼(3)はプレート本体(1)の両端側に2本を平行に配置しているが、この2本の外にプレート本体(1)の大きさに応じて中間に他の形鋼(3)を追加させてもよい。この場合にも、追加した形鋼(3)は両端側の形鋼(3)と平行させるのが好ましい。 (3) is a shape steel using a U-shaped light groove shape steel, and two in parallel on the left and right ends of the plate body (1). As shown in FIG. The opening surface (3a) side of (3) is framed so as to be fixed to the mesh body (2). The section steel (3) is welded and fixed to the mesh body (2) on the opening surface (3a) side, and the entire mesh body (2) and substantially half of the section steel (3) are made of the plate body (1). The other part of the section steel (3) is projected from the back surface (1a) of the plate body (1). The protruding flat plate portion (3b) is a surface parallel to the back surface (1a) of the plate body (1) and is supported by both side surface portions (3d). Further, the side surface portions (3d) are not necessarily parallel to each other, and may be in a state of opening toward the mesh body (2) side. In addition, although the shape steel (3) is arranged in parallel on both ends of the plate body (1), there are other shapes in the middle depending on the size of the plate body (1). Steel (3) may be added. Also in this case, it is preferable that the added shape steel (3) is parallel to the shape steel (3) on both ends.
又、形鋼(3)の両側面部(3d)には、図1,2に示すように、多数の貫通穴(3e)を穿設させている。この貫通穴(3e)は露出した形鋼(3)の内部が空洞であるため、この形鋼(3)の内部に打設コンクリートを充填させて形鋼(3)の全体強度を高め、且つ、形鋼(3)の全体がコンクリートで包まれることにより、形鋼(3)の防錆と打設コンクリートとの結合性を高める役目を成す。 In addition, as shown in FIGS. 1 and 2, a large number of through holes (3 e) are formed in both side surfaces (3 d) of the shape steel (3). This through hole (3e) is hollow inside the exposed shape steel (3), so that the cast steel (3) is filled with cast concrete to increase the overall strength of the shape steel (3), and By wrapping the entire shape steel (3) with concrete, it plays a role of increasing the rust prevention of the shape steel (3) and the bondability with the cast concrete.
更に、この貫通穴(3e)は、図3,4に示すように、略半分をプレート本体(1)に埋設させるのが好ましい。この場合にはプレート本体(1)と形鋼(3)との結合が強固となり、コンクリート打設後の構造物との結合性も高く、構造物の表面に固着したプレート本体(1)が形鋼(3)を残して脱落することを防止できる。 Further, as shown in FIGS. 3 and 4, it is preferable that substantially half of the through hole (3e) is embedded in the plate body (1). In this case, the connection between the plate body (1) and the shaped steel (3) is strong, the bondability with the structure after the concrete is placed is high, and the plate body (1) fixed to the surface of the structure is shaped. It is possible to prevent the steel (3) from dropping off.
更に形鋼(3)のプレート本体(1)から露出する平板部(3b)には、ネジ用締着手段(3c)を設けている。このネジ用締着手段(3c)とはボルト、タッピンネジ等のネジ類が螺合するためのものであり、ネジ溝を形成したナットの装着あるいはタッピンネジ用の下穴を含む。そしてこのネジ用締着手段(3c)は、図1,2に示すように、平板部(3b)の全長にわたって等間隔で多数設けている。そして上記タッピンネジ用の下穴を穿設する場合には、図4に示すようにツバ出し加工を施すと下穴が長くでき、タッピンネジ(5)によるネジ溝も多くなり好ましく、連結金具(4)を使用してプレート本体(1)を連結する際に、タッピンネジ(5)と下穴であるネジ用締着手段(3c)との螺合が強固なものとなり、プレート本体(1)を確実な強度で枠組することができる。 Furthermore, the screw | thread fastening means (3c) is provided in the flat plate part (3b) exposed from the plate main body (1) of a shape steel (3). The screw fastening means (3c) is for screwing screws such as bolts and tapping screws, and includes a nut for forming a screw groove or a pilot hole for tapping screws. As shown in FIGS. 1 and 2, a plurality of screw fastening means (3c) are provided at equal intervals over the entire length of the flat plate portion (3b). When the pilot hole for the tapping screw is drilled as shown in FIG. 4, it is preferable that the pilot hole can be made longer so that the tapped screw (5) has a larger number of thread grooves. When the plate body (1) is connected using the screw, the screwing between the tapping screw (5) and the screw fastening means (3c), which is the pilot hole, becomes strong, and the plate body (1) is securely connected. Can be framed with strength.
又、図5に示すようにネジ用締着手段(3c)がナットであり、このナットは形鋼(3)のバカ穴を穿設した平板部(3b)の裏面に溶着させている。この場合にはボルトが使用でき、より強固な枠組ができる。 Further, as shown in FIG. 5, the screw fastening means (3c) is a nut, and this nut is welded to the back surface of the flat plate portion (3b) in which the hole of the shape steel (3) is formed. In this case, a bolt can be used, and a stronger frame can be formed.
1 プレート本体
1a 裏面
2 網状体
3 形鋼
3a 開口面
3b 平板部
3c ネジ用締着手段
3d 側面部
3e 貫通穴
1 Plate body
1a Back side 2 Mesh 3 Shaped steel
3a Open face
3b Flat plate
3c Screw fastening means
3d side
3e Through hole
Claims (3)
The residual mold according to claim 1, wherein the screw fastening means (3c) is provided with a nut.
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