JP2021001505A - Form fixture - Google Patents

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JP2021001505A
JP2021001505A JP2019116438A JP2019116438A JP2021001505A JP 2021001505 A JP2021001505 A JP 2021001505A JP 2019116438 A JP2019116438 A JP 2019116438A JP 2019116438 A JP2019116438 A JP 2019116438A JP 2021001505 A JP2021001505 A JP 2021001505A
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reinforcing frame
opening
formwork
flange
main body
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JP7045630B2 (en
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正洋 柳田
Masahiro Yanagida
正洋 柳田
一敏 川井
Kazutoshi Kawai
一敏 川井
守 牧山
Mamoru Makiyama
守 牧山
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Makiyamagumi KK
Kawakin Core Tech Co Ltd
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Makiyamagumi KK
Kawakin Core Tech Co Ltd
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Abstract

To provide a form fixture which is suitable for the case where a reinforcement frame composed of an H-shaped steel installed in an opening of an existing structure is manufactured so that a flange is parallel to an opening inner peripheral surface and installed, and can surely fix the reinforcement frame.SOLUTION: A form fixture includes a body 16 that has an engagement groove 17 with which an inside flange 12b of a reinforcement frame 12 is engaged provided on its rear end and has a front end forming a pressing part 18 in contact with the end of a form 14, female screw members 21 and 23 provided on a rear portion of the engagement groove 17 of the body 16 so that an axial line faces back and forth directions of the body 16, and a pressing bolt 24 that is mounted on the female members 21 and 23 and presses the inside flange 12b of the reinforcement frame 12.SELECTED DRAWING: Figure 3

Description

この発明は、型枠固定具に関し、より詳細には既設構造物を耐震補強する際に、開口部に設置される補強フレームと開口部内周面との間に硬化材を充填するために、両者間に配置される型枠を固定するための固定具に関する。 The present invention relates to a formwork fixture, and more specifically, in order to fill an existing structure with a hardening material between the reinforcing frame installed in the opening and the inner peripheral surface of the opening when the existing structure is seismically reinforced. It relates to a fixture for fixing a formwork arranged between them.

既設構造物の耐震補強工法として、構造物の開口部に筋交いやオイルダンパーなどの制振部材を設置する工法が知られている。これら制振部材は方形枠状の補強フレームの内方に取り付けられ、この補強フレームを介して開口部に設置される。 As a seismic retrofitting method for existing structures, a method is known in which vibration damping members such as braces and oil dampers are installed at the openings of the structure. These vibration damping members are attached to the inside of the square frame-shaped reinforcing frame, and are installed in the opening through the reinforcing frame.

補強フレームは一般にＨ形鋼を方形枠状に加工して製作され、補強フレームと開口部内周面との間に型枠を配置し、空隙にモルタル等の硬化材を充填して固定される。従来、補強フレームは、Ｈ形鋼のウェブが開口部内周面と平行となるように製作されて開口部に配置される。すなわち、従来の補強フレームは弱軸方向配置のフレームであり、硬化材を充填するために配置される型枠の固定具も、そのフレーム配置形状に応じたものが提案されている（例えば、特許文献１、２参照）。 The reinforcing frame is generally manufactured by processing H-shaped steel into a square frame shape, a mold is arranged between the reinforcing frame and the inner peripheral surface of the opening, and the gap is filled with a hardening material such as mortar and fixed. Conventionally, the reinforcing frame is manufactured so that the web of H-shaped steel is parallel to the inner peripheral surface of the opening and is arranged in the opening. That is, the conventional reinforcing frame is a frame arranged in the weak axial direction, and the fixture of the formwork arranged for filling the curing material is also proposed according to the frame arrangement shape (for example, patent). Refer to Documents 1 and 2).

Ｈ形鋼のフランジが開口部内周面と平行となるように補強フレームを製作して開口部に配置すれば、すなわちＨ形鋼のウェブが開口部内周面と直角をなす強軸方向配置のフレームとすれば、補強フレームの耐震強度を高めることができる。しかしながら、このような強軸方向配置のフレームとした場合の型枠の固定具は、提案されていない。 If a reinforcing frame is manufactured and placed in the opening so that the flange of the H-shaped steel is parallel to the inner peripheral surface of the opening, that is, the frame in the strong axial direction in which the web of the H-shaped steel is perpendicular to the inner peripheral surface of the opening. If so, the seismic strength of the reinforcing frame can be increased. However, no formwork fixture has been proposed when the frame is arranged in the strong axial direction.

特開２００６−２５７７８１号公報Japanese Unexamined Patent Publication No. 2006-257781 特開２０１１−２１３９４号公報Japanese Unexamined Patent Publication No. 2011-21394

この発明は上記のような技術的背景に基づいてなされたものであって、次の目的を達成するものである。
この発明の目的は、既設構造物の開口部に設置されるＨ形鋼からなる補強フレームを、フランジが開口部内周面と平行となるように製作して設置する場合に好適で、かつ確実に固定することができる型枠の固定具を提供することにある。 The present invention has been made based on the above technical background, and achieves the following object.
An object of the present invention is suitable and reliably when a reinforcing frame made of H-shaped steel to be installed in an opening of an existing structure is manufactured and installed so that the flange is parallel to the inner peripheral surface of the opening. The purpose is to provide a formwork fixture that can be fixed.

この発明は上記課題を達成するために、次のような手段を採用している。
すなわち、この発明は、既設構造物の開口部にフランジが前記開口部内周面と平行となるように設置されるＨ形鋼からなる補強フレームと前記開口部内周面との間の空隙に、硬化材を充填するために両者間に配置され、端部が前記補強フレームの外側フランジの幅方向端面上に載るように配置される１対の型枠の固定具であって、
後端部に前記補強フレームの内側フランジが係合する係合溝が設けられ、前端部が前記型枠の前記端部に当接する押圧部を形成する本体と、
この本体の前記係合溝よりも後方部分に、軸線が該本体の前後方向を向くように設けられた雌ねじ部材と、
前記雌ねじ部材に装着され、前記補強フレームの内側フランジを押圧する押圧ボルトとを備えてなることを特徴とする型枠固定具にある。 The present invention employs the following means in order to achieve the above object.
That is, in the present invention, the flange is hardened in the gap between the reinforcing frame made of H-shaped steel and the inner peripheral surface of the opening, which is installed in the opening of the existing structure so that the flange is parallel to the inner peripheral surface of the opening. A pair of formwork fixtures arranged between the two to fill the material, with the ends resting on the widthwise end faces of the outer flanges of the reinforcing frame.
A main body in which an engaging groove in which the inner flange of the reinforcing frame engages is provided in the rear end portion, and a pressing portion in which the front end portion abuts on the end portion of the formwork is formed.
A female screw member provided in a portion rearward of the engaging groove of the main body so that the axis line faces the front-rear direction of the main body.
The formwork fixture is attached to the female screw member and includes a pressing bolt that presses the inner flange of the reinforcing frame.

上記型枠固定具において、前記本体の前記押圧部には、前記外側フランジの前記幅方向端面に沿って延びる棒部材が設けられている構成を採用することができる。 In the formwork fixture, it is possible to adopt a configuration in which the pressing portion of the main body is provided with a rod member extending along the widthwise end surface of the outer flange.

また、前記雌ねじ部材は前記内側フランジの幅方向に沿って複数設けられている構成を採用することができる。 Further, it is possible to adopt a configuration in which a plurality of the female screw members are provided along the width direction of the inner flange.

この発明によれば、既設構造物の開口部に設置されるＨ形鋼からなる補強フレームを、フランジが開口部内周面と平行となるように製作して設置する場合に、型枠を確実に固定することができる。 According to the present invention, when a reinforcing frame made of H-shaped steel to be installed in an opening of an existing structure is manufactured and installed so that the flange is parallel to the inner peripheral surface of the opening, the formwork is reliably installed. Can be fixed.

この発明による型枠固定具の実施形態を示す平面図である。It is a top view which shows the embodiment of the formwork fixture by this invention. 同実施形態のものの立面図である。It is an elevation view of the thing of the same embodiment. 型枠固定具による型枠の固定状態を示し、図４のＡ−Ａ線矢視断面図である。It is a cross-sectional view taken along the line AA of FIG. 4 showing a fixed state of the formwork by the formwork fixture. 補強フレームの設置態様を示す正面図である。It is a front view which shows the installation mode of a reinforcing frame.

この発明の実施形態を図面を参照しながら以下に説明する。まず、図４を参照して、この発明の型枠固定具が対象としている型枠及び補強フレームの設置態様について説明する。図４は補強フレームの設置態様を示す正面図である。 Embodiments of the present invention will be described below with reference to the drawings. First, with reference to FIG. 4, the installation mode of the formwork and the reinforcing frame targeted by the formwork fixture of the present invention will be described. FIG. 4 is a front view showing an installation mode of the reinforcing frame.

既設構造物の開口部１０には耐震補強のために、いずれも図示は省略するが、筋交いやオイルダンパーなどの制振部材が設置される。これら制振部材は矩形枠状の補強フレーム１２の内方に取り付けられ、すなわち補強フレーム１２を介して開口部１０に設置される。 Although not shown, vibration damping members such as braces and oil dampers are installed in the openings 10 of the existing structure for seismic reinforcement. These vibration damping members are attached to the inside of the rectangular frame-shaped reinforcing frame 12, that is, are installed in the opening 10 via the reinforcing frame 12.

補強フレーム１２は外側フランジ１２ａ、内側フランジ１２ｂ及びウェブ１２ｃを有するＨ形鋼からなり、フランジ１２ａ，１２ｂが開口部内周面１１と平行になるように矩形枠状に製作されて開口部１０に設置される。 The reinforcing frame 12 is made of H-shaped steel having an outer flange 12a, an inner flange 12b and a web 12c, is manufactured in a rectangular frame shape so that the flanges 12a and 12b are parallel to the inner peripheral surface 11 of the opening, and is installed in the opening 10. Will be done.

補強フレーム１２を開口部１０に固定するために、補強フレーム１２と開口部内周面１１との間の空隙１３にモルタル等の硬化材が充填され、この硬化材の充填のために、補強フレーム１２と開口部内周面１１との間に１対の型枠１４（図４には正面側の型枠のみを部分的に示す）が配置される。型枠１４は端部が補強フレーム１２の外側フランジ１２ａの幅方向端面に載るように配置され、複数配置されたこの発明による型枠固定具１５によって固定される。 In order to fix the reinforcing frame 12 to the opening 10, a hardening material such as mortar is filled in the gap 13 between the reinforcing frame 12 and the inner peripheral surface 11 of the opening, and the reinforcing frame 12 is filled with the hardening material. A pair of formwork 14 (only the formwork on the front side is partially shown in FIG. 4) is arranged between the opening and the inner peripheral surface 11 of the opening. The formwork 14 is arranged so that its end portion rests on the widthwise end surface of the outer flange 12a of the reinforcing frame 12, and is fixed by a plurality of arranged formwork fixtures 15 according to the present invention.

図１〜図３は、この発明による型枠固定具１５の実施形態を示し、図１は平面図、図２は立面図、図３は固定具１５による型枠の固定状態を示し、図４のＡ−Ａ線矢視断面図である。固定具１５の本体１６は、この実施形態では板状のものであり、鋼板で作られている。本体１６は補強フレーム１２の外側フランジ１２ａ及び内側フランジ１２ｂ間の寸法よりも幾分か大きい長さ寸法を有している。 1 to 3 show an embodiment of the formwork fixture 15 according to the present invention, FIG. 1 is a plan view, FIG. 2 is an elevation view, and FIG. 3 shows a fixed state of the formwork by the fixture 15. 4 is a cross-sectional view taken along the line AA of No. 4. The main body 16 of the fixture 15 is plate-shaped in this embodiment and is made of steel plate. The main body 16 has a length dimension that is slightly larger than the dimension between the outer flange 12a and the inner flange 12b of the reinforcing frame 12.

本体１６の後端部には下端側が開放する係合溝１７が形成され、この係合溝１７には補強フレーム１２の内側フランジ１２ｂが係合可能となっている。係合溝１７の溝壁には内側フランジ１２ｂのフランジ面に当接可能なパッド１９が設けられている。 An engaging groove 17 whose lower end side is open is formed at the rear end portion of the main body 16, and the inner flange 12b of the reinforcing frame 12 can be engaged with the engaging groove 17. A pad 19 that can come into contact with the flange surface of the inner flange 12b is provided on the groove wall of the engaging groove 17.

本体１６の前端部は型枠１４の端部、すなわち前記したように外側フランジ１２ａの幅方向端面に載せられた型枠１４の端部に当接してこれを押圧する押圧部１８を形成している。この押圧部１８の下端には外側フランジ１２ａの幅方向端面に沿って延びる棒部材２０が、その中央部で固定されている。 The front end portion of the main body 16 forms a pressing portion 18 that abuts and presses the end portion of the mold 14, that is, the end portion of the mold 14 mounted on the widthwise end surface of the outer flange 12a as described above. There is. At the lower end of the pressing portion 18, a rod member 20 extending along the widthwise end surface of the outer flange 12a is fixed at the central portion thereof.

本体１６の係合溝１７よりも後方部分には雌ねじ部材である高ナット２１が設けられている。高ナット２１は本体１６の下端に、軸線が本体１６の前後方向を向くようにして溶接等により固定されている。高ナット２１に延伸部２２を溶接等により固定して、この延伸部２２にさらに高ナット２３が溶接等により固定されている。このように、この実施形態では、本体１６に複数（２つ）の高ナット２１、２３が設けられている。これらの高ナット２１、２３には押圧ボルト２４がそれぞれ装着される。 A high nut 21 which is a female screw member is provided in a portion rearward of the engaging groove 17 of the main body 16. The high nut 21 is fixed to the lower end of the main body 16 by welding or the like so that the axis of the high nut 21 faces the front-rear direction of the main body 16. The stretched portion 22 is fixed to the high nut 21 by welding or the like, and the high nut 23 is further fixed to the stretched portion 22 by welding or the like. As described above, in this embodiment, the main body 16 is provided with a plurality (two) of high nuts 21 and 23. Pressing bolts 24 are attached to these high nuts 21 and 23, respectively.

次に図３、図４を参照して上記型枠固定具１５による型枠１４の固定方法について説明する。開口部１０に配置された補強フレーム１２は図示しない手段により仮固定される。なお、補強フレーム１２を構成するＨ形鋼の外側フランジ１２ａのフランジ面には多数のスタッドボルト３０が設けられ、また開口部１０を形成している既設構造物の躯体には多数のアンカーボルト３１が設けられている。これらのスタッドボルト３０及びアンカーボルト３１は開口部内周面１１と補強フレーム１２との間の空隙１３に突出配置されることとなる。空隙１３にはさらにスパイラル筋３２が配置される。 Next, a method of fixing the mold 14 by the mold fixing tool 15 will be described with reference to FIGS. 3 and 4. The reinforcing frame 12 arranged in the opening 10 is temporarily fixed by means (not shown). A large number of stud bolts 30 are provided on the flange surface of the outer flange 12a of the H-shaped steel constituting the reinforcing frame 12, and a large number of anchor bolts 31 are provided on the frame of the existing structure forming the opening 10. Is provided. These stud bolts 30 and anchor bolts 31 are arranged so as to project in the gap 13 between the inner peripheral surface 11 of the opening and the reinforcing frame 12. A spiral muscle 32 is further arranged in the gap 13.

開口部１０に補強フレーム１２を配置した後、補強フレーム１２と開口部内周面１１との間に１対の型枠１４を配置する。型枠１４は前記したように、その端部が補強フレーム１２の外側フランジ１２ａの幅方向端面に載るように配置される。そして、この型枠１４を固定するために各型枠１４ごとに複数の固定具１５が適宜間隔を置いて補強フレーム１２に取り付けられる。 After arranging the reinforcing frame 12 in the opening 10, a pair of formwork 14 is arranged between the reinforcing frame 12 and the inner peripheral surface 11 of the opening. As described above, the formwork 14 is arranged so that its end portion rests on the widthwise end surface of the outer flange 12a of the reinforcing frame 12. Then, in order to fix the formwork 14, a plurality of fixtures 15 are attached to the reinforcing frame 12 at appropriate intervals for each formwork 14.

固定具１５は、図３に示すように、本体１６の係合溝１７に補強フレーム１２の内側フランジ１２ｂを係合させるとともに、前端部の押圧部１８に設けた棒部材２０が型枠１４の端部に当接するようにして、補強フレーム１２に取り付けられる。 As shown in FIG. 3, the fixture 15 engages the inner flange 12b of the reinforcing frame 12 with the engaging groove 17 of the main body 16, and the rod member 20 provided in the pressing portion 18 at the front end portion of the formwork 14 It is attached to the reinforcing frame 12 so as to be in contact with the end portion.

そして、高ナット２１、２３に装着された押圧ボルト２４を締め込んで内側フランジ１２ｂを押圧すると、高ナット２１、２３は補強フレーム１２の内側フランジ１２ｂのフランジ面から離間し、パッド１９が内側フランジ１２ｂに圧接する。このように押圧ボルト２４の締め込みにより高ナット２１、２３には内側フランジ１２ｂから離間する力が作用することから、本体１６には図３に矢印で示す方向のモーメントＭが作用する。すなわち、本体１６には高ナット２１、２３を力点、パッド１９が内側フランジ１２ｂに当接する部位を支点、棒部材２０が型枠１４に当接する部位を作用点とするモーメントＭが作用する。これにより、棒部材２０が型枠１４の端部に圧接して、型枠１４の端部は棒部材２０と外側フランジ１２ａの端面との間に挟み込まれ、補強フレーム１２に強固に固定されることとなる。 Then, when the pressing bolts 24 mounted on the high nuts 21 and 23 are tightened to press the inner flange 12b, the high nuts 21 and 23 are separated from the flange surface of the inner flange 12b of the reinforcing frame 12, and the pad 19 is separated from the inner flange. Press contact with 12b. By tightening the pressing bolt 24 in this way, a force that separates the high nuts 21 and 23 from the inner flange 12b acts on the main body 16, so that a moment M in the direction indicated by the arrow in FIG. 3 acts on the main body 16. That is, a moment M acts on the main body 16 with the high nuts 21 and 23 as power points, the portion where the pad 19 abuts on the inner flange 12b as a fulcrum, and the portion where the rod member 20 abuts on the mold 14 as an action point. As a result, the rod member 20 is pressed against the end of the mold 14, and the end of the mold 14 is sandwiched between the rod member 20 and the end face of the outer flange 12a and is firmly fixed to the reinforcing frame 12. It will be.

型枠１４の設置後、空隙１３にモルタル等の硬化材が充填され、その硬化後に固定具１５が取り外されて型枠１４が脱型される。以上のように、この発明によれば、既設構造物の開口部１０に設置されるＨ形鋼からなる補強フレーム１２を、フランジ１２ａ、１２ｂが開口部内周面１１と平行となるように製作して設置する場合に、型枠１４を確実に固定することができる。 After the mold 14 is installed, the void 13 is filled with a curing material such as mortar, and after the curing, the fixture 15 is removed and the mold 14 is removed. As described above, according to the present invention, the reinforcing frame 12 made of H-shaped steel installed in the opening 10 of the existing structure is manufactured so that the flanges 12a and 12b are parallel to the inner peripheral surface 11 of the opening. The formwork 14 can be securely fixed when it is installed.

上記実施形態は例示にすぎず、この発明は種々の態様を採ることができる。例えば、上記実施形態では雌ねじ部材を複数設けたが、単数であってもよい。 The above embodiment is merely an example, and the present invention can take various aspects. For example, in the above embodiment, a plurality of female screw members are provided, but the number may be singular.

１０：開口部
１１：開口部内周面
１２：補強フレーム
１２ａ：外側フランジ
１２ｂ：内側フランジ
１２ｃ：ウェブ
１３：空隙
１４：型枠
１５：型枠固定具
１６：本体
１７：係合溝
１８：押圧部
１９：パッド
２０：棒部材
２１、２３：雌ねじ部材（高ナット）
２２：延伸部
２４：押圧ボルト 10: Opening 11: Opening inner peripheral surface 12: Reinforcing frame 12a: Outer flange 12b: Inner flange 12c: Web 13: Void 14: Formwork 15: Formwork fixture 16: Main body 17: Engagement groove 18: Pressing part 19: Pad 20: Rod member 21, 23: Female thread member (high nut)
22: Stretched part 24: Pressing bolt

Claims (3)

既設構造物の開口部にフランジが前記開口部内周面と平行となるように設置されるＨ形鋼からなる補強フレームと前記開口部内周面との間の空隙に、硬化材を充填するために両者間に配置され、端部が前記補強フレームの外側フランジの幅方向端面上に載るように配置される１対の型枠の固定具であって、
後端部に前記補強フレームの内側フランジが係合する係合溝が設けられ、前端部が前記型枠の前記端部に当接する押圧部を形成する本体と、
この本体の前記係合溝よりも後方部分に、軸線が該本体の前後方向を向くように設けられた雌ねじ部材と、
前記雌ねじ部材に装着され、前記補強フレームの内側フランジを押圧する押圧ボルトとを備えてなることを特徴とする型枠固定具。 To fill the gap between the reinforcing frame made of H-shaped steel, which is installed so that the flange is parallel to the inner peripheral surface of the opening in the opening of the existing structure, and the inner peripheral surface of the opening, with a hardening material. A pair of formwork fixtures arranged between the two so that the ends rest on the widthwise end faces of the outer flanges of the reinforcing frame.
A main body in which an engaging groove in which the inner flange of the reinforcing frame engages is provided in the rear end portion, and a pressing portion in which the front end portion abuts on the end portion of the formwork is formed.
A female screw member provided in a portion rearward of the engaging groove of the main body so that the axis line faces the front-rear direction of the main body.
A formwork fixture that is attached to the female thread member and includes a pressing bolt that presses the inner flange of the reinforcing frame. 前記本体の前記押圧部には、前記外側フランジの前記幅方向端面に沿って延びる棒部材が設けられていることを特徴とする請求項１記載の型枠固定具。 The formwork fixture according to claim 1, wherein the pressing portion of the main body is provided with a rod member extending along the widthwise end surface of the outer flange. 前記雌ねじ部材は前記内側フランジの幅方向に沿って複数設けられていることを特徴とする請求項１又は２に記載の型枠固定具。 The mold fixture according to claim 1 or 2, wherein a plurality of female screw members are provided along the width direction of the inner flange.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6323338U (en) * 1986-07-30 1988-02-16
JP2007002635A (en) * 2005-06-23 2007-01-11 Technical Grout Kk Restricting tool of aseismatic filling mortar form
JP2011246883A (en) * 2010-05-24 2011-12-08 Kfc Ltd Separator for aseismatic reinforcing structure and aseismatic reinforcing method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6323338U (en) * 1986-07-30 1988-02-16
JP2007002635A (en) * 2005-06-23 2007-01-11 Technical Grout Kk Restricting tool of aseismatic filling mortar form
JP2011246883A (en) * 2010-05-24 2011-12-08 Kfc Ltd Separator for aseismatic reinforcing structure and aseismatic reinforcing method

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