JP2021055295A - Temporary handrail, and construction method of opening - Google Patents

Temporary handrail, and construction method of opening Download PDF

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JP2021055295A
JP2021055295A JP2019177288A JP2019177288A JP2021055295A JP 2021055295 A JP2021055295 A JP 2021055295A JP 2019177288 A JP2019177288 A JP 2019177288A JP 2019177288 A JP2019177288 A JP 2019177288A JP 2021055295 A JP2021055295 A JP 2021055295A
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opening
temporary handrail
base
floor
erected
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JP7310502B2 (en
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林　譲治
Joji Hayashi
譲治 林
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Sekisui House Ltd
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Abstract

To provide a temporary handrail causing no hindrance to work, and preventing fall of a worker or tools, and a construction method of an opening using the temporary handrail.SOLUTION: A temporary handrail 1 prevents fall from an opening 2 in the construction work of a building formed with a wall body 4 on a circumference of the opening 2 formed penetrating through upper and lower floors. The temporary handrail 1 includes multiple bases 7 fixed to a floor surface of the upper floor, multiple columns 8 with lower ends fixed to the bases 7 and erected thereon, and horizontal members 9 temporarily set between the columns 8, and is formed at a position separated by a predetermined distance on an opposite side to the opening 2 from the formed position of the wall body 4.SELECTED DRAWING: Figure 4

Description

本発明は、上下階に貫通して形成される開口部からの転落を防止する仮設手摺及び当該仮設手摺を用いた開口部の施工方法に関する。 The present invention relates to a temporary handrail that prevents falling from an opening formed through the upper and lower floors, and a method of constructing an opening using the temporary handrail.

従来より、例えば階段室や吹き抜けなどのように、上階の床面を貫通して上下階に連通する開口部が設けられる建物の施工の際に、この開口部の周縁に仮設手摺を設けて、開口部から下階側に作業員や工具等が落下することを防止している。このような仮設手摺としては、例えば、手摺支柱の下部に形成されたピンを開口部の周縁に形成されている梁に設けられている取り付け用孔に挿入することで複数の手摺支柱を立設させて、当該手摺支柱の間に横架材を架設して形成される仮設手摺がある（特許文献１参照）。 Conventionally, when constructing a building that has an opening that penetrates the floor of the upper floor and communicates with the upper and lower floors, such as a staircase or a stairwell, a temporary handrail is provided on the periphery of this opening. , Prevents workers and tools from falling from the opening to the lower floor side. As such a temporary handrail, for example, a plurality of handrail columns are erected by inserting a pin formed at the lower part of the handrail column into a mounting hole provided in a beam formed at the periphery of the opening. Then, there is a temporary handrail formed by erection of a horizontal member between the handrail columns (see Patent Document 1).

特開２０１２−３１６１１号公報Japanese Unexamined Patent Publication No. 2012-31611

しかし、特許文献１の仮設手摺は、開口部の周縁に露出している梁に挿入されて立設されるものであるので、梁を耐火被覆材で覆う作業の際や梁の上側のフランジの上にモルタルを打設して耐火性能を高める作業の際に、仮設手摺の下端が邪魔になる問題がある。また、開口部の周縁に界壁や間仕切壁などの壁体を施工する際に、仮設手摺が干渉することとなるので、壁体の施工前に仮設手摺を撤去する必要があり、壁体が未だ完成していないので、開口部から作業員や工具が落下するおそれがある。 However, since the temporary handrail of Patent Document 1 is inserted into a beam exposed on the peripheral edge of the opening and erected, it is used during the work of covering the beam with a fireproof coating material or on the upper flange of the beam. There is a problem that the lower end of the temporary handrail becomes an obstacle when placing mortar on top to improve fire resistance. In addition, when constructing a wall body such as a boundary wall or a partition wall on the periphery of the opening, the temporary handrail interferes with the wall body. Therefore, it is necessary to remove the temporary handrail before constructing the wall body. Since it has not been completed yet, workers and tools may fall from the opening.

そこで、本発明は、作業の邪魔にならず、作業員や工具の落下を防止することができる仮設手摺、及び当該仮設手摺を利用した開口部の施工方法を提供することを目的とする。 Therefore, an object of the present invention is to provide a temporary handrail that does not interfere with the work and can prevent the fall of workers and tools, and a method of constructing an opening using the temporary handrail.

本発明の仮設手摺は、上下階を貫通して形成される開口部の周縁に壁体が形成される建物の施工時に開口部からの転落を防止する仮設手摺であって、上階の床面に固定される複数のベースと、下端が前記ベースに固定されて立設される複数の支柱と、前記支柱の間に仮設される横架材と、を備え、前記壁体が形成される位置から前記開口部と反対側に、所定の長さ離れた位置に形成されることを特徴としている。 The temporary handrail of the present invention is a temporary handrail that prevents a fall from the opening during construction of a building in which a wall body is formed on the periphery of the opening formed through the upper and lower floors, and is a floor surface of the upper floor. A position where the wall body is formed, including a plurality of bases fixed to the base, a plurality of columns whose lower ends are fixed to the base and erected, and a horizontal member temporarily installed between the columns. It is characterized in that it is formed at a position separated by a predetermined length on the side opposite to the opening.

本発明の仮設手摺は、前記所定長さは前記壁体の表面から１５０ｍｍ以上２５０ｍｍ以下の長さであることを特徴としている。 The temporary handrail of the present invention is characterized in that the predetermined length is 150 mm or more and 250 mm or less from the surface of the wall body.

本発明の仮設手摺は、前記床面はコンクリート系床版であり、前記ベースを前記床面にビス止めするとともに、前記ベースの上面に形成された突起に前記支柱の下端が外嵌されることを特徴としている。 In the temporary handrail of the present invention, the floor surface is a concrete floor slab, the base is screwed to the floor surface, and the lower end of the support column is externally fitted to the protrusion formed on the upper surface of the base. It is characterized by.

本発明の仮設手摺は、前記開口部は、前記上下階を繋ぐ階段室を形成する開口部であることを特徴としている。 The temporary handrail of the present invention is characterized in that the opening is an opening forming a staircase connecting the upper and lower floors.

本発明の開口部の施工方法は、矩形の開口部を形成するようにその外周に梁を架設し、当該梁にコンクリート系床版の一端を固定して床面を形成し、前記梁から距離を開けて前記開口部から離れる位置の前記床面上に前記ベースを固定し、前記ベースに支柱を立設し、前記支柱に横架材を架設して、上記のいずれかの仮設手摺を形成し、前記コンクリート系床版の一端に沿ってランナー材を固定するとともに、前記ランナー材にスタッドを立設して壁下地を形成した後、前記壁下地に壁パネルを固定し、その後、前記横架材、前記支柱、及び前記ベースを取り除いて、前記仮設手摺を撤去することを特徴としている。 In the method of constructing an opening of the present invention, a beam is erected on the outer periphery thereof so as to form a rectangular opening, and one end of a concrete floor slab is fixed to the beam to form a floor surface, and a distance from the beam. The base is fixed on the floor surface at a position away from the opening, a support is erected on the base, and a horizontal member is erected on the support to form any of the above temporary handrails. Then, the runner material is fixed along one end of the concrete floor slab, and studs are erected on the runner material to form a wall base, and then the wall panel is fixed to the wall base, and then the lateral side. It is characterized in that the temporary handrail is removed by removing the frame material, the support column, and the base.

本発明の仮設手摺によると、ベースが上階の床面に固定されているので、開口部の周縁に仮設手摺が干渉することがなく、梁を耐火被覆材で覆う作業の際や梁の上側のフランジの上にモルタルを打設して耐火性能を高める作業の際に、仮設手摺の下端が邪魔になることがない。また、仮設手摺は、壁体が形成される位置から開口部と反対側に、所定の長さ離れた位置に形成されるので、開口部の周縁に壁体を施工する際に、仮設手摺が干渉することとなるので、壁体の施工前に仮設手摺を撤去する必要がなく、壁体の施工を安全に行うことができる。 According to the temporary handrail of the present invention, since the base is fixed to the floor surface of the upper floor, the temporary handrail does not interfere with the peripheral edge of the opening, and the beam is covered with a fireproof coating material or the upper side of the beam. The lower end of the temporary handrail does not get in the way when the mortar is placed on the flange of the to improve the fire resistance performance. Further, since the temporary handrail is formed at a position opposite to the opening from the position where the wall body is formed and at a position separated by a predetermined length, the temporary handrail is formed when the wall body is constructed on the peripheral edge of the opening. Since it interferes, it is not necessary to remove the temporary handrail before the construction of the wall body, and the construction of the wall body can be performed safely.

本発明の仮設手摺によると、壁体が形成される位置から開口部と反対側に、壁体の表面から仮設手摺までの距離が１５０ｍｍ以上あるので、壁体を構成する壁パネルを下地に取り付ける際に仮設手摺が邪魔に成ることが無く、また、壁体の表面から仮設手摺までの距離が２５０ｍｍ以下であるので、壁パネルの上端をビス止めする際などに、仮設手摺に沿って脚立を配置した場合でも、壁パネルから大きく離れることがなく、ビス止めなどの作業を脚立の上で無理な姿勢をとることなく安全に行うことができる。 According to the temporary handrail of the present invention, since the distance from the surface of the wall body to the temporary handrail is 150 mm or more from the position where the wall body is formed to the opposite side of the opening, the wall panel constituting the wall body is attached to the base. Since the temporary handrail does not get in the way and the distance from the surface of the wall body to the temporary handrail is 250 mm or less, the stepladder should be installed along the temporary handrail when screwing the upper end of the wall panel. Even when it is placed, it does not move far from the wall panel, and work such as screwing can be performed safely without taking an unreasonable posture on the stepladder.

本発明の仮設手摺によると、コンクリート系床版の床面にベースをビス止めし、ベースの上面に形成された突起に支柱の下端を外嵌させるので、極めて簡単に、仮設手摺の支柱を立設させることができ、仮設手摺の設置作業を簡単なものとすることができる。また、逆の手順で仮設手摺を撤去することができるので、極めて簡単に仮設手摺を撤去することができる。そして、ベースがビス止め可能であるとともに、上面に突起が形成されて支柱を支えるものであるので、一般的なジャッキベースや固定ベースを流用することで、仮設手摺を安価に構成することができる。 According to the temporary handrail of the present invention, the base is screwed to the floor surface of the concrete floor slab, and the lower end of the support is fitted to the protrusion formed on the upper surface of the base, so that the support of the temporary handrail can be erected very easily. It can be installed, and the installation work of the temporary handrail can be simplified. Further, since the temporary handrail can be removed in the reverse procedure, the temporary handrail can be removed extremely easily. Since the base can be screwed and a protrusion is formed on the upper surface to support the support column, a temporary handrail can be constructed at low cost by diverting a general jack base or fixed base. ..

本発明の仮設手摺によると、開口部は、上下階を繋ぐ階段室を形成する開口部であるので、共用内階段が形成された共同住宅のように、階段室の周縁に界壁を形成する必要がある場合にも施工性を妨げることなく仮設手摺を設けることができ、安全に施工することができる。 According to the temporary handrail of the present invention, since the opening is an opening forming a staircase connecting the upper and lower floors, a boundary wall is formed on the periphery of the staircase like a condominium in which a common inner staircase is formed. Even when it is necessary, a temporary handrail can be provided without hindering the workability, and the work can be carried out safely.

本発明の開口部の施工方法によると、開口部から離れる位置の床面上にベースを固定し、ベースに支柱を立設し、支柱に横架材を架設するので、簡単に仮設手摺を形成することができ、仮設手摺がランナー材、スタッド、及び壁パネルなどの壁体を施工する際に邪魔になることが無く、しかも、壁パネルを固定した後に仮設手摺を撤去するので、作業者や工具の落下を確実に防止することができる。 According to the method of constructing the opening of the present invention, the base is fixed on the floor surface at a position away from the opening, the support column is erected on the base, and the horizontal member is erected on the support column, so that a temporary handrail can be easily formed. The temporary handrail does not interfere with the construction of wall bodies such as runner materials, studs, and wall panels, and the temporary handrail is removed after the wall panel is fixed. It is possible to reliably prevent the tool from falling.

開口部の施工の前にベースをＡＬＣ床版に取り付けた状態を示す斜視図。The perspective view which shows the state which attached the base to the ALC floor slab before construction of an opening. 開口部の施工の前にベースに支柱を立設させた状態を示す斜視図。A perspective view showing a state in which a support column is erected on a base before construction of an opening. 支柱に横架材を取り付けて仮設手摺を完成させた状態を示す斜視図。A perspective view showing a state in which a horizontal member is attached to a support column to complete a temporary handrail. 仮設手摺を完成させた状態を示す断面図。Sectional drawing which shows the state which completed the temporary handrail. 安全帯をつけた作業者が開口部の周りで作業する状態を示す図。The figure which shows the state which the worker who put on the safety belt works around the opening. 脚立に乗った作業者が開口部の周りで作業する状態を示す図。The figure which shows the state which the worker who got on a stepladder works around the opening. 下階の天井１３や階段室側の壁面１４等を施工し開口部２が完成した状態を示す図。The figure which shows the state which the opening 2 was completed by constructing the ceiling 13 of the lower floor, the wall surface 14 on the staircase side, and the like. 仮設手摺を撤去する状態を示す図。The figure which shows the state which removes a temporary handrail.

以下、本発明の仮設手摺１、及び開口部の施工方法の実施形態について各図を参照しつつ説明する。仮設手摺１は、階段室や吹き抜けなどのように、上階の床面を貫通して上下階に連通する開口部２が設けられる建物の施工の際に用いられる仮設手摺１である。仮設手摺１は、開口部２の周縁に形成されて、開口部２から下階側に作業員３や工具等が落下することを防止している。なお、本実施形態の開口部２には、建物が完成されたときには界壁で囲まれる階段室が形成される。したがって、本実施形態の仮設手摺１は界壁が形成されるまでの作業員３や工具の落下を防止するものである。なお、ここで界壁は本発明における壁体４である。 Hereinafter, embodiments of the temporary handrail 1 and the method of constructing the opening of the present invention will be described with reference to the respective drawings. The temporary handrail 1 is a temporary handrail 1 used in the construction of a building having an opening 2 that penetrates the floor surface of the upper floor and communicates with the upper and lower floors, such as a staircase or a stairwell. The temporary handrail 1 is formed on the peripheral edge of the opening 2 to prevent the worker 3 and tools from falling from the opening 2 to the lower floor side. In the opening 2 of the present embodiment, a staircase surrounded by a boundary wall is formed when the building is completed. Therefore, the temporary handrail 1 of the present embodiment prevents the worker 3 and the tool from falling until the boundary wall is formed. Here, the boundary wall is the wall body 4 in the present invention.

仮設手摺１を用いて開口部２を施工する建物は、例えば共同住宅、商業施設、宿泊施設などの、多人数の利用がある建物であってもよいし、戸建住宅のように、少数の家族が居住する建物であってもよい。建物は鉄骨造でＨ形鋼からなる複数の梁５を有している。建物は鉄骨造に限定されるものではなく、軽量鉄骨造、ＲＣ造、木造などの他の構造躯体を有するものであってもよい。複数の梁５の上にはＡＬＣ床版６が敷設されて上階の床面を形成している。なお、上階の床面はＡＬＣ床版６の上に図示しない床化粧材が貼り付けられて形成されるものであるが、仮設手摺１を設置する際には未だ床化粧材は貼り付けられていない。なお、本発明における「コンクリート系床版」は本実施形態においてはＡＬＣ床版６であるが、これに限定されるものではなく、ＰＣ板やＥＣＰのような押出成形セメント板、ＲＣスラブ等であっても良い。 The building in which the opening 2 is constructed using the temporary handrail 1 may be a building that is used by a large number of people, such as an apartment house, a commercial facility, and an accommodation facility, or a small number of buildings such as a detached house. It may be a building where a family lives. The building is a steel structure and has a plurality of beams 5 made of H-shaped steel. The building is not limited to the steel structure, and may have other structural structures such as a lightweight steel structure, an RC structure, and a wooden structure. ALC floor slabs 6 are laid on the plurality of beams 5 to form the floor surface of the upper floor. The floor surface of the upper floor is formed by pasting a floor decorative material (not shown) on the ALC floor slab 6, but when the temporary handrail 1 is installed, the floor decorative material is still attached. Not. The "concrete floor slab" in the present invention is the ALC floor slab 6 in the present embodiment, but is not limited to this, and may be an extruded cement board such as a PC board or ECP, an RC slab, or the like. There may be.

仮設手摺１は、図４に示すように、ＡＬＣ床版６の上面に固定されるベース７と、下端がベース７に固定されて立設される複数の支柱８と、支柱８の間に仮設される横架材９と、を備える。ベース７は金属製で、矩形の敷盤７０と、敷盤７０の中央から上方に延びる突起７１とを有する。敷盤７０には複数の貫通孔が設けられており、上側から貫通孔を通してＡＬＣ床版６に床版固定ビス７２を打ち込むことで、ベース７をＡＬＣ床版６に固定させる。突起７１は敷盤７０の中央に溶接されて上方に延びる円筒材である。ベース７は一般的に固定ベースと呼ばれる単管足場を固定する金物を流用することができ、専用の部品を設ける場合に比べて安価なものとすることができる。なお、ベース７は、円筒材の突起７１が形成される固定ベースに変えて、雄ネジの突起７１が敷盤７０から突出するジャッキベースを用いても良い。この場合でも一般的に流通しているジャッキベースを用いることで安価なものとすることができる。なお、床版固定ビス７２は下穴をもうけることなく、ＡＬＣ床版６にねじ込むことができるＡＬＣ用のステンレスビスである。下穴を事前に形成するものであっても良い。 As shown in FIG. 4, the temporary handrail 1 is temporarily installed between the base 7 fixed to the upper surface of the ALC floor slab 6, a plurality of columns 8 whose lower ends are fixed to the base 7 and erected, and the columns 8. The horizontal member 9 is provided. The base 7 is made of metal and has a rectangular floor board 70 and a protrusion 71 extending upward from the center of the floor board 70. The floor board 70 is provided with a plurality of through holes, and the base 7 is fixed to the ALC floor slab 6 by driving the floor slab fixing screw 72 into the ALC floor slab 6 through the through holes from above. The protrusion 71 is a cylindrical material that is welded to the center of the floor board 70 and extends upward. As the base 7, a metal fitting for fixing a single-tube scaffold, which is generally called a fixed base, can be diverted, and the cost can be reduced as compared with the case where a dedicated part is provided. The base 7 may be a jack base in which the protrusions 71 of the male screws protrude from the bed 70, instead of the fixed base on which the protrusions 71 of the cylindrical material are formed. Even in this case, it can be made inexpensive by using a jack base that is generally distributed. The floor slab fixing screw 72 is a stainless steel screw for ALC that can be screwed into the ALC floor slab 6 without making a pilot hole. The pilot hole may be formed in advance.

なお、本実施形態では、ベース７に設けられた貫通孔の上側から床版固定ビス７２をＡＬＣ床版６に打ち込んでいるが、ベース７に設けられた貫通孔の径が床版固定ビス７２の頭部よりも大きい場合には、ベース７の上に図示しない木製平板を配置し、その上から床版固定ビス７２を打ち込んでもよい。 In the present embodiment, the floor slab fixing screw 72 is driven into the ALC floor slab 6 from above the through hole provided in the base 7, but the diameter of the through hole provided in the base 7 is the floor slab fixing screw 72. If it is larger than the head of the floor slab, a wooden flat plate (not shown) may be placed on the base 7 and the floor slab fixing screw 72 may be driven from above.

支柱８は鋼製の単管パイプである。支柱８には上端部の近傍及び高さ方向の中間部にそれぞれ単管を固定するクランプ材８０が設けられている。クランプ材８０は支柱８に対して横架材９を直交するように固定させるものである。横架材９は、構成の単管パイプであり、水平方向に延びて手摺の本体を構成するものである。横架材９は上下に平行に２本設けられており、２本の横架材９によって作業者が開口部２から落下することを防止している。 The support column 8 is a single pipe made of steel. The support column 8 is provided with a clamp member 80 for fixing a single pipe in the vicinity of the upper end portion and in the middle portion in the height direction, respectively. The clamp member 80 fixes the horizontal member 9 so as to be orthogonal to the support column 8. The horizontal member 9 is a single pipe having a structure, and extends in the horizontal direction to form the main body of the handrail. Two horizontal members 9 are provided in parallel in the vertical direction, and the two horizontal members 9 prevent the operator from falling from the opening 2.

仮設手摺１は、開口部２の設計上の規準となるモジュール芯Ｎから３００ｍｍ開口部２から離れる方向にセットバックした位置に当該仮設手摺１の支柱８の中心が位置するように配置される。本実施形態においてはモジュール芯Ｎは開口部２を形成する梁５の中心線であり、ＡＬＣ床版６の開口部２側の端縁が配置される基準線である。壁体４の開口部２から離れる側の表面Ｓは、モジュール芯Ｎから９９．５ｍｍの位置となるように、配置されており、壁体４の表面Ｓから仮設手摺１の支柱８の中心までの長さは２００．５ｍｍとなる。仮設手摺１は、壁体４を施工する際に壁体４自体やドライバなどの工具と干渉することが無いように、壁体４から離れる必要があり、且つ、仮設手摺１は、壁体４の施工の際に、仮設手摺１に沿って開口部２から離れる側に脚立を置いたときに、作業者が壁体４にビスを打ち込むことができる程度に壁体４に近い必要がある。仮設手摺１の支柱８の中心までの長さは１５０ｍｍ以上、２５０ｍｍ以下であることが好ましい。 The temporary handrail 1 is arranged so that the center of the support column 8 of the temporary handrail 1 is located at a position set back in a direction away from the opening 2 by 300 mm from the module core N, which is a design standard of the opening 2. In the present embodiment, the module core N is the center line of the beam 5 forming the opening 2, and is the reference line on which the edge of the ALC floor slab 6 on the opening 2 side is arranged. The surface S on the side of the wall 4 away from the opening 2 is arranged so as to be 99.5 mm from the module core N, from the surface S of the wall 4 to the center of the support column 8 of the temporary handrail 1. The length of is 200.5 mm. The temporary handrail 1 needs to be separated from the wall body 4 so as not to interfere with the wall body 4 itself or tools such as a driver when constructing the wall body 4, and the temporary handrail 1 is a wall body 4 When the stepladder is placed along the temporary handrail 1 on the side away from the opening 2, it is necessary to be close to the wall body 4 so that the operator can drive the screw into the wall body 4. The length of the temporary handrail 1 to the center of the support column 8 is preferably 150 mm or more and 250 mm or less.

次に開口部の施工方法について説明する。建物を施工する際には、基礎上に建物の構造躯体を形成し、屋根や外壁を施工した後、建物の床を形成する。本実施形態の建物は、ＡＬＣ床版６の端縁が梁５の幅方向の中心線に配置されるように、梁５の上側のフランジの上にＡＬＣ床版６の端部を載置し、複数のＡＬＣ床版６を並べて敷設する。このとき、階段室が形成される位置には梁５を架設して外周が梁５に囲まれており、外周の梁５の間にＡＬＣ床版６を架設しないことで、上下階を貫通して開口部２が形成される。そして、開口部２廻りの作業の際に、作業者や工具の落下を防止するために、当該開口部２に沿って仮設手摺１が設けられる。 Next, the construction method of the opening will be described. When constructing a building, the structural frame of the building is formed on the foundation, the roof and outer walls are constructed, and then the floor of the building is formed. In the building of the present embodiment, the end portion of the ALC floor slab 6 is placed on the upper flange of the beam 5 so that the edge of the ALC floor slab 6 is arranged at the center line in the width direction of the beam 5. , A plurality of ALC floor slabs 6 are laid side by side. At this time, a beam 5 is erected at the position where the staircase is formed, and the outer circumference is surrounded by the beam 5. By not erection of the ALC floor slab 6 between the outer peripheral beams 5, the upper and lower floors are penetrated. The opening 2 is formed. Then, a temporary handrail 1 is provided along the opening 2 in order to prevent the operator and the tool from falling during the work around the opening 2.

仮設手摺１は、図１に示すように、モジュール芯Ｎから３００ｍｍ離れた位置、即ち、壁体４の開口部２と反対側の表面Ｓが配置されることとなる位置から約２００ｍｍの位置に、その中心に形成された突起７１が配置されるようにベース７がＡＬＣ床版６の上に載置される。そして、ベース７の貫通孔の上側から床版固定ビス７２をＡＬＣ床版６に打ち込んで、ベース７をＡＬＣ床版６に固定する。 As shown in FIG. 1, the temporary handrail 1 is located at a position 300 mm away from the module core N, that is, about 200 mm from a position where the surface S on the opposite side of the opening 2 of the wall body 4 is arranged. The base 7 is placed on the ALC floor slab 6 so that the protrusion 71 formed at the center thereof is arranged. Then, the floor slab fixing screw 72 is driven into the ALC floor slab 6 from above the through hole of the base 7, and the base 7 is fixed to the ALC floor slab 6.

次に、図２に示すように、単管で形成された支柱８をベース７の下端をベース７の突起７１に嵌め込んで支柱８をＡＬＣ床版６の上に立設させる。このときベース７の突起７１が壁体４の開口部２と反対側の表面Ｓが配置されることとなる位置から約２００ｍｍ離れた位置に配置されているので、支柱８も壁体４の表面Ｓから約２００ｍｍ離れた位置に配置されることとなる。 Next, as shown in FIG. 2, the support column 8 formed of a single pipe is fitted into the protrusion 71 of the base 7 at the lower end of the base 7, and the support column 8 is erected on the ALC floor slab 6. At this time, since the protrusion 71 of the base 7 is arranged at a position about 200 mm away from the position where the surface S on the side opposite to the opening 2 of the wall body 4 is arranged, the support column 8 is also arranged on the surface of the wall body 4. It will be arranged at a position about 200 mm away from S.

そして、支柱８を立設すると、次に、図３に示すように、支柱８の上端部及び中間部に形成されているクランプ材８０を操作して、２本の単管製の横架材９を支柱８に直交するように配置し、支柱８に横架材９を取り付ける。横架材９は開口部２に沿って複数並んでいる支柱８のクランプ材８０にそれぞれ取り付けられて、支柱８に架設される。ベース７に支柱８を立設し、横架材９を支柱８に架設すると、次に、図示しないが、支柱８の下端に長尺な木製平板を例えば鉄線などの結束線で固定し、開口部２から工具や資材が落下することを防止する手摺幅木を形成する。 Then, when the support column 8 is erected, then, as shown in FIG. 3, the clamp member 80 formed at the upper end portion and the intermediate portion of the support column 8 is operated to operate the two single-tube horizontal members. 9 is arranged so as to be orthogonal to the support column 8, and the horizontal member 9 is attached to the support column 8. The horizontal member 9 is attached to each of the clamp members 80 of the columns 8 arranged along the opening 2, and is erected on the column 8. When the support column 8 is erected on the base 7 and the horizontal member 9 is erected on the support column 8, then, although not shown, a long wooden flat plate is fixed to the lower end of the support column 8 with a binding wire such as an iron wire to open the opening. A handrail skirting board is formed to prevent tools and materials from falling from the part 2.

その後、例えば図５に示すように、作業者の安全帯３０を仮設手摺１の横架材９に固定して、梁５の周りを耐火被覆材５０で被覆するとともに、梁５の上側のフランジのＡＬＣ床版６が設けられていない部分に、アングル状のモルタル受鉄板を固定して、モルタル５１を打設し、梁５の耐火性を向上させる。このように仮設手摺１が形成されることで、作業者の安全性が向上するとともに、仮設手摺１が梁５のフランジなどに固定されるものではないので、梁５の耐火被覆などの作業の際に、仮設手摺１が干渉することがなく、容易に、且つ、確実に作業を行うことができる。 After that, for example, as shown in FIG. 5, the worker's safety belt 30 is fixed to the horizontal member 9 of the temporary handrail 1, the beam 5 is covered with the fireproof coating material 50, and the upper flange of the beam 5 is covered. An angle-shaped mortar receiving plate is fixed to a portion where the ALC floor slab 6 is not provided, and the mortar 51 is placed to improve the fire resistance of the beam 5. By forming the temporary handrail 1 in this way, the safety of the operator is improved, and since the temporary handrail 1 is not fixed to the flange of the beam 5, the work such as the fireproof coating of the beam 5 is performed. At that time, the temporary handrail 1 does not interfere with each other, and the work can be easily and surely performed.

そして、図５に示すように、ＡＬＣ床版６の上面に、当該ＡＬＣ床版６の一辺に沿うようにランナー材１０を固定する。ランナー材１０は図示を省略しているが上方に設けられる上階の梁下にも固定され、これら一対のランナー材１０の間にスタッド１１を立設して壁下地を形成する。そして、壁下地に石こうボードの壁パネル１２を２重に貼り付けてビス止めする。例えば、上側のランナー材１０を固定する際や壁パネル１２の上端部をビス止めする際には、図６に示すように、仮設手摺１の開口部２と反対側に近接させて脚立を配置し、作業者は脚立に乗って壁パネル１２などの施工を行う。このとき仮設手摺１が、壁体４の表面Ｓが配置されることとなる位置から約２００ｍｍの位置であるので、脚立が遠すぎることがなく、無理な姿勢をとることなく安全に作業することができる。なお、壁体４は、本実施形態では、共用の階段室と住戸とを隔てる界壁である。壁体４はこれに限定されるものではなく、戸建て住戸の間仕切壁や吹き抜け空間を見下ろすことができる腰壁であっても良い。 Then, as shown in FIG. 5, the runner material 10 is fixed to the upper surface of the ALC floor slab 6 along one side of the ALC floor slab 6. Although not shown, the runner material 10 is also fixed under the beam on the upper floor provided above, and a stud 11 is erected between the pair of runner materials 10 to form a wall base. Then, the wall panel 12 of the gypsum board is doubly attached to the wall base and fastened with screws. For example, when fixing the upper runner material 10 or when fixing the upper end portion of the wall panel 12 with screws, as shown in FIG. 6, the stepladder is arranged close to the side opposite to the opening 2 of the temporary handrail 1. Then, the worker rides on the stepladder to construct the wall panel 12 and the like. At this time, since the temporary handrail 1 is located at a position of about 200 mm from the position where the surface S of the wall body 4 is to be arranged, the stepladder is not too far away and the work can be safely performed without taking an unreasonable posture. Can be done. In the present embodiment, the wall body 4 is a boundary wall that separates the common staircase and the dwelling unit. The wall body 4 is not limited to this, and may be a partition wall of a detached dwelling unit or a waist wall overlooking the atrium space.

その後、図７に示すように、下階の天井１３や階段室側の壁面１４等を施工し開口部２を完成させる。そして、図８に示すように、横架材９をクランプ材８０から取り外し、支柱８をベース７の突起７１から引き抜いて、床版固定ビス７２を取り外してベース７をＡＬＣ床版６の上から取り除き仮設手摺１を撤去する。このように、壁体４が形成されてから仮設手摺１を取り除くので、壁体４を施工する作業などの際の安全性を高めることができる。そして、仮設手摺１を撤去した後に、図示しないが、床化粧材や壁クロスなどを施工して建物の内装を完成させる。 After that, as shown in FIG. 7, the ceiling 13 on the lower floor, the wall surface 14 on the staircase room side, and the like are constructed to complete the opening 2. Then, as shown in FIG. 8, the horizontal member 9 is removed from the clamp member 80, the support column 8 is pulled out from the protrusion 71 of the base 7, the floor slab fixing screw 72 is removed, and the base 7 is removed from above the ALC floor slab 6. Removal Remove the temporary handrail 1. In this way, since the temporary handrail 1 is removed after the wall body 4 is formed, it is possible to improve the safety during the work of constructing the wall body 4. Then, after removing the temporary handrail 1, although not shown, floor decorative materials, wall cloths, and the like are applied to complete the interior of the building.

以上のように、本実施形態の仮設手摺１及び開口部２の施工方法によると、壁体４を施工する際に干渉しない位置に仮設手摺１が設けられることとなるので、壁体４が形成される前に開口部２から工具や作業員３が落下することを防止することができる。 As described above, according to the construction method of the temporary handrail 1 and the opening 2 of the present embodiment, the temporary handrail 1 is provided at a position where it does not interfere with the construction of the wall body 4, so that the wall body 4 is formed. It is possible to prevent the tool and the worker 3 from falling from the opening 2 before the work is performed.

本発明の実施の形態は上述の形態に限ることなく、本発明の思想の範囲を逸脱しない範囲で適宜変更することができることは云うまでもない。 It goes without saying that the embodiment of the present invention is not limited to the above-described embodiment and can be appropriately changed without departing from the scope of the idea of the present invention.

本発明に係る仮設手摺１及び開口部の施工方法は、２階建て以上で、階段室や吹き抜けが設けられた建物における開口部２の施工時の安全性を高める仮設手摺１及び開口部の施工方法として好適に用いることができる。 The construction method of the temporary handrail 1 and the opening according to the present invention is the construction of the temporary handrail 1 and the opening which enhances the safety at the time of construction of the opening 2 in a building having two or more floors and provided with a staircase or a stairwell. It can be suitably used as a method.

１ 仮設手摺
２ 開口部
４ 壁体
６ ＡＬＣ床版（コンクリート系床版）
７ ベース
８ 支柱
９ 横架材
Ｓ 表面 1 Temporary handrail 2 Opening 4 Wall 6 ALC floor slab (concrete floor slab)
7 Base 8 Strut 9 Horizontal material S Surface

Claims (5)

上下階を貫通して形成される開口部の周縁に壁体が形成される建物の施工時に開口部からの転落を防止する仮設手摺であって、
上階の床面に固定される複数のベースと、
下端が前記ベースに固定されて立設される複数の支柱と、
前記支柱の間に仮設される横架材と、
を備え、
前記壁体が形成される位置から前記開口部と反対側に、所定の長さ離れた位置に形成されることを特徴とする仮設手摺。 A temporary handrail that prevents falling from the opening during construction of a building in which a wall body is formed on the periphery of the opening formed through the upper and lower floors.
With multiple bases fixed to the floor on the upper floor,
A plurality of columns whose lower ends are fixed to the base and erected,
A horizontal member temporarily installed between the columns and
With
A temporary handrail characterized in that it is formed at a position separated by a predetermined length from the position where the wall body is formed on the side opposite to the opening. 前記所定長さは前記壁体の表面から１５０ｍｍ以上２５０ｍｍ以下の長さであることを特徴とする請求項１に記載の仮設手摺。 The temporary handrail according to claim 1, wherein the predetermined length is 150 mm or more and 250 mm or less from the surface of the wall body. 前記床面はコンクリート系床版であり、前記ベースを前記床面にビス止めするとともに、
前記ベースの上面に形成された突起に前記支柱の下端が外嵌されることを特徴とする請求項１又は請求項２に記載の仮設手摺。 The floor surface is a concrete floor slab, and the base is screwed to the floor surface and at the same time.
The temporary handrail according to claim 1 or 2, wherein the lower end of the support column is fitted onto a protrusion formed on the upper surface of the base. 前記開口部は、前記上下階を繋ぐ階段室を形成する開口部であることを特徴とする請求項１から請求項３に記載の仮設手摺。 The temporary handrail according to claim 1 to 3, wherein the opening is an opening forming a staircase connecting the upper and lower floors. 矩形の開口部を形成するようにその外周に梁を架設し、
当該梁にコンクリート系床版の一端を固定して床面を形成し、
前記梁から距離を開けて前記開口部から離れる位置の前記床面上に前記ベースを固定し、前記ベースに前記支柱を立設し、前記支柱に前記横架材を架設して、請求項１から請求項４のいずれかに記載の仮設手摺を形成し、
前記コンクリート系床版の一端に沿ってランナー材を固定するとともに、前記ランナー材にスタッドを立設して壁下地を形成した後、前記壁下地に壁パネルを固定し、
その後、前記横架材、前記支柱、及び前記ベースを取り除いて、前記仮設手摺を撤去することを特徴とする開口部の施工方法。 A beam is erected on the outer circumference so as to form a rectangular opening,
One end of the concrete floor slab is fixed to the beam to form the floor surface.
The base is fixed on the floor surface at a position away from the opening at a distance from the beam, the support column is erected on the base, and the horizontal member is erected on the support column. To form the temporary handrail according to any one of claims 4
A runner material is fixed along one end of the concrete floor slab, and a stud is erected on the runner material to form a wall base, and then a wall panel is fixed to the wall base.
After that, a method of constructing an opening, which comprises removing the horizontal member, the support column, and the base, and removing the temporary handrail.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01203566A (en) * 1988-02-09 1989-08-16 Tokyu Constr Co Ltd Handrail fitting anchor at slab opening section and its prefitting construction
JPH0557218U (en) * 1991-12-27 1993-07-30 ミサワホーム株式会社 Assembled handrail
JPH0972096A (en) * 1995-09-07 1997-03-18 Takenaka Komuten Co Ltd Provisionally erected handrail unit
JPH1072939A (en) * 1996-08-30 1998-03-17 Tokyu Koken Kk Main rope support and main rope erection method in construction of prestressed concrete building using main rope support
JPH11152827A (en) * 1997-11-21 1999-06-08 Fujita Corp Frame structure of partition
JP2017179693A (en) * 2016-03-28 2017-10-05 ミサワホーム株式会社 Support structure for support post of handrail

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01203566A (en) * 1988-02-09 1989-08-16 Tokyu Constr Co Ltd Handrail fitting anchor at slab opening section and its prefitting construction
JPH0557218U (en) * 1991-12-27 1993-07-30 ミサワホーム株式会社 Assembled handrail
JPH0972096A (en) * 1995-09-07 1997-03-18 Takenaka Komuten Co Ltd Provisionally erected handrail unit
JPH1072939A (en) * 1996-08-30 1998-03-17 Tokyu Koken Kk Main rope support and main rope erection method in construction of prestressed concrete building using main rope support
JPH11152827A (en) * 1997-11-21 1999-06-08 Fujita Corp Frame structure of partition
JP2017179693A (en) * 2016-03-28 2017-10-05 ミサワホーム株式会社 Support structure for support post of handrail

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