JP5866261B2 - Ceiling fall prevention structure - Google Patents

Ceiling fall prevention structure Download PDF

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JP5866261B2
JP5866261B2 JP2012136440A JP2012136440A JP5866261B2 JP 5866261 B2 JP5866261 B2 JP 5866261B2 JP 2012136440 A JP2012136440 A JP 2012136440A JP 2012136440 A JP2012136440 A JP 2012136440A JP 5866261 B2 JP5866261 B2 JP 5866261B2
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ceiling
fall prevention
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JP2014001536A (en
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英二 宮▲崎▼
英二 宮▲崎▼
野口 浩
浩 野口
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本田技研工業株式会社
大成建設株式会社
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本発明は、天井落下防止構造に関する。詳しくは、天井材の落下を防止する天井落下防止構造に関する。   The present invention relates to a ceiling fall prevention structure. Specifically, the present invention relates to a ceiling fall prevention structure that prevents the ceiling material from falling.

従来より、大地震や長周期地震動が加わった建物では、天井材が落下するおそれがあるため、天井下地を耐震補強することが行われている。
天井は、例えば、上階の床躯体から吊り下げられた吊りボルトと、この吊りボルトに支持されて略水平に延びる野縁受けと、略水平でかつ野縁受けに交差する方向に延びるとともに野縁受けに支持される野縁と、この野縁の下面に張り付けられた天井面材と、を備える。
Conventionally, in a building subjected to a large earthquake or long-period ground motion, there is a possibility that the ceiling material may fall, so that the ceiling base is seismically reinforced.
The ceiling is, for example, a suspension bolt suspended from a floor frame of an upper floor, a field edge receiver that extends substantially horizontally supported by the suspension bolt, and extends in a direction that is substantially horizontal and intersects the field edge receiver. A field edge supported by the edge holder and a ceiling surface material attached to the lower surface of the field edge.

ここで、吊りボルトに螺合されたハンガーに野縁受けを嵌め込むことで、野縁受けが吊りボルトに支持される。また、野縁と野縁受けとが交差する箇所では、野縁と野縁受けとの間にクリップを嵌め込むことで、野縁が野縁受けに支持される。
よって、このような構造の天井では、大きな地震荷重が作用すると、クリップが外れたり野縁受けがハンガーから外れたりして、天井材が落下するおそれがある。
Here, the field edge receiver is supported by the suspension bolt by fitting the field edge receiver into the hanger threadedly engaged with the suspension bolt. Moreover, in a location where the field edge and the field edge receiver intersect, the field edge is supported by the field edge receiver by inserting a clip between the field edge and the field edge receiver.
Therefore, when a large seismic load is applied to the ceiling having such a structure, the clip may be detached or the field edge receiver may be detached from the hanger, and the ceiling material may fall.

耐震補強としては、例えば、以下のような方法が提案されている。
まず、天井下地を構成する吊りボルトと野縁受けとの間や、吊りボルトと床躯体との間に、斜めに延びるブレースを取り付けたりする方法が提案されている(特許文献1、2参照)。これにより、天井面全体の揺れを抑え、地震時の天井の挙動を小さくできるから、天井材が落下するのを防止できる。
For example, the following methods have been proposed as seismic reinforcement.
First, there has been proposed a method of attaching a brace extending obliquely between a suspension bolt constituting a ceiling base and a field edge receiver, or between a suspension bolt and a floor frame (see Patent Documents 1 and 2). . Thereby, since the shaking of the whole ceiling surface can be suppressed and the behavior of the ceiling at the time of an earthquake can be made small, it can prevent that a ceiling material falls.

また、吊りボルトと野縁とをワイヤーで連結する方法が提案されている(特許文献3参照)。これにより、地震動でクリップが外れたり、野縁受けがハンガーから外れたりした場合でも、野縁が吊りボルトに支持されるので、天井材が落下するのを防止できる。   Moreover, the method of connecting a suspension bolt and a field edge with a wire is proposed (refer patent document 3). Thereby, even when the clip is detached due to the earthquake motion or the field edge receiver is detached from the hanger, the field edge is supported by the suspension bolt, so that the ceiling material can be prevented from falling.

特開2010−24625号公報JP 2010-24625 A 特開2008−255735号公報JP 2008-255735 A 特開2005−127362号公報JP 2005-127362 A

しかしながら、天井下地材を含む天井材は、動的で複雑に変化する地震動を、地震水平力や地震鉛直力などの取り扱い容易な静的外力として捉えて設計されてきた。また、実際に地震動が加わった建物内部では、建物立地場所の地盤特性および建物の構造形式によって、天井材に作用する地震力が静的荷重の数倍に増幅される場合がある。この場合、地震荷重がどの程度増幅されるのか算定するのは難しく、地震荷重に耐えうる天井を設計するのは困難である。したがって、上述のような耐震補強を行っていても、想定外の大きな揺れが天井に加わると、天井が落下するおそれがあった。   However, ceiling materials including ceiling base materials have been designed with dynamic and complex seismic motions as static external forces that are easy to handle, such as seismic horizontal force and seismic vertical force. In addition, in a building where earthquake motion is actually applied, the seismic force acting on the ceiling material may be amplified several times the static load depending on the ground characteristics of the building location and the structure type of the building. In this case, it is difficult to calculate how much the seismic load is amplified, and it is difficult to design a ceiling that can withstand the seismic load. Therefore, even if the earthquake-proof reinforcement as described above is performed, there is a possibility that the ceiling may fall if an unexpected large shake is applied to the ceiling.

また、既存建物の天井に上述のような耐震補強を行う場合、天井裏空間には空調ダクト、衛生配管、照明設備の配線などが複雑に収容されているので、必要な箇所に補強材を取り付けることができず、確実に施工できない場合があった。また、天井裏空間の全域に亘ってブレース材を配置して耐震補強を行おうとしても、天井下で居住者の執務が継続中である場合は、確実に施工できない、という問題があった。   In addition, when the above-mentioned seismic reinforcement is applied to the ceiling of an existing building, air conditioning ducts, sanitary piping, wiring of lighting equipment, etc. are housed in a complicated space in the space behind the ceiling. In some cases, the work could not be performed reliably. In addition, there is a problem that even if a brace material is arranged over the entire space behind the ceiling to perform seismic reinforcement, if the work of the resident is continuing under the ceiling, the work cannot be reliably performed.

本発明は、地震時に想定外の大きな揺れが天井に加わっても、天井材が落下するのを防止できるとともに、既存建物にも執務を継続しながら簡易かつ確実に施工できる天井落下防止構造を提供することを目的とする。   The present invention provides a ceiling fall prevention structure that can prevent a ceiling material from falling even if an unexpected large shake is applied to the ceiling during an earthquake, and that can be easily and reliably applied to an existing building while continuing work. The purpose is to do.

請求項1、2に記載の天井落下防止構造(例えば、後述の天井落下防止装置10)は、天井(例えば、後述の天井1)の落下を防止する天井落下防止構造であって、前記天井の天井裏空間の構造体(例えば、後述の鉄骨梁4)に支持されて前記天井の天井面(例えば、後述の天井面材24)よりも下方まで延びる複数の束材(例えば、後述の束材11)と、当該複数の束材間に架設された複数の受け材(例えば、後述の受け材12)と、当該複数の受け材間に架設されて前記天井面の下方に位置する防護材(例えば、後述の防護材13)と、を備えることを特徴とする。また、前記束材の少なくとも一部には、前記構造体から当該束材に延びるブレースが設けられることを特徴とする。 The ceiling fall prevention structure according to claim 1 or 2 (for example, a ceiling fall prevention device 10 described later) is a ceiling fall prevention structure for preventing a ceiling (for example, ceiling 1 described later) from falling, A plurality of bundle members (for example, a bundle material described later) supported by a structure (for example, a steel beam 4 described later) in the ceiling space and extending below a ceiling surface (for example, a ceiling surface material 24 described later) of the ceiling. 11), a plurality of receiving members (for example, receiving member 12 described later) installed between the plurality of bundle members, and a protective material (being described later receiving member 12) and positioned below the ceiling surface. For example, a protective material 13) described later is provided. Further, at least a part of the bundle material is provided with a brace extending from the structure to the bundle material.

この発明によれば、想定外に大きな揺れが天井に加わって、野縁や野縁受けなどの天井材同士の連結が外れても、天井全体または天井材の一部が防護材に引っ掛かるので、天井材や、ダクト、配線ラックなどの天井内重量物が落下するのを防止できる。   According to this invention, unexpectedly large shaking is added to the ceiling, even if the connection between the ceiling materials such as the field edge and the field edge receiver is disconnected, the entire ceiling or a part of the ceiling material is caught by the protective material, It is possible to prevent a ceiling material, a heavy object in the ceiling such as a duct and a wiring rack from falling.

また、既存建物に本発明の天井落下防止構造を構築する場合でも、天井裏空間では配管や配線を避けて束材を取り付けるだけでよいので、確実に施工できる。
また、天井下で居住者の執務が継続中であっても、執務場所から離れた位置に束材および受け材を設置しておき、執務の合間に防護材を受け材間に取り付ければよいので、執務を継続しながら簡易かつ確実に施工できる。
Moreover, even when the ceiling fall prevention structure of the present invention is constructed in an existing building, construction can be reliably performed because it is only necessary to attach a bundle material while avoiding piping and wiring in the space behind the ceiling.
In addition, even if the resident's work is ongoing under the ceiling, it is only necessary to install a bundle and receiving material at a position away from the work place and to receive a protective material between the materials between work. It can be constructed easily and reliably while continuing the work.

請求項2に記載の天井落下防止構造は、前記天井面には、前記束材が貫通する貫通孔(例えば、後述の貫通孔241)が形成され、当該天井面の貫通孔と前記束材との間には、隙間が形成されることを特徴とする。   In the ceiling fall prevention structure according to claim 2, a through hole (for example, a through hole 241 described later) through which the bundle material passes is formed in the ceiling surface, and the through hole of the ceiling surface and the bundle material are formed. A gap is formed between the two.

この発明によれば、天井面の貫通孔束材との間に隙間を形成したので、地震動により天井が大きく揺れても、天井落下防止構造は天井の揺れの影響を受けないので、天井材が落下するのを確実に防止できる。   According to this invention, since the gap is formed between the ceiling surface through-hole bundle material, the ceiling fall prevention structure is not affected by the shaking of the ceiling even if the ceiling is greatly shaken by the earthquake motion. It can be surely prevented from falling.

請求項3に記載の天井落下防止構造は、前記防護材は、鉄骨材、ワイヤー、または膜状の部材であることを特徴とする。
請求項4に記載の天井落下防止構造は、前記受け材は、前記複数の束材の下端に固定されて、前記天井面に略平行に延びることを特徴とする。
The ceiling fall prevention structure according to claim 3 is characterized in that the protective material is a steel frame material, a wire, or a film-like member.
The ceiling fall prevention structure according to claim 4 is characterized in that the receiving member is fixed to lower ends of the plurality of bundle members and extends substantially parallel to the ceiling surface.

請求項に記載の天井落下防止構造は、天井の落下を防止する天井落下防止構造であって、前記天井の天井裏空間の構造体に支持されて前記天井の天井面よりも下方まで貫通して延びる複数の束材と、当該複数の束材の下端部に設けられた網状の防護材と、を備えることを特徴とする。また、前記束材の少なくとも一部には、前記構造体から当該束材に延びるブレースが設けられることを特徴とする。 The ceiling fall prevention structure according to claim 5 is a ceiling fall prevention structure for preventing the ceiling from falling, and is supported by a structure in a ceiling back space of the ceiling and penetrates below the ceiling surface of the ceiling. And a net-like protective material provided at the lower ends of the plurality of bundle members. Further, at least a part of the bundle material is provided with a brace extending from the structure to the bundle material.

この発明によれば、防護材を網状としたので、天井落下防止構造を軽量化できる。   According to this invention, since the protective material has a net shape, the ceiling fall prevention structure can be reduced in weight.

本発明によれば、想定外に大きな揺れが天井に加わって、野縁や野縁受けなどの天井材同士の連結が外れても、天井全体または天井材の一部が防護材に引っ掛かるので、天井材や、ダクト、配線ラックなどの天井内重量物が落下するのを防止できる。また、既存建物に本発明の天井落下防止構造を構築する場合、天井裏空間では、配管や配線を避けて束材を取り付けるだけでよいので、確実に施工できる。また、天井下で居住者の執務が継続中であっても、執務場所から離れた位置に束材および受け材を設置しておき、執務の合間に防護材を受け材間に取り付ければよいので、執務を継続しながら天井材を補強できるから、簡易かつ確実に施工できる。   According to the present invention, unexpectedly large shaking is applied to the ceiling, even if the connection between the ceiling materials such as the field edge and the field edge receiver is disconnected, the entire ceiling or a part of the ceiling material is caught by the protective material, It is possible to prevent a ceiling material, a heavy object in the ceiling such as a duct and a wiring rack from falling. In addition, when the ceiling fall prevention structure of the present invention is constructed in an existing building, construction can be reliably performed because it is only necessary to attach a bundle material while avoiding piping and wiring in the space behind the ceiling. In addition, even if the resident's work is ongoing under the ceiling, it is only necessary to install a bundle and receiving material at a position away from the work place and to receive a protective material between the materials between work. Because the ceiling material can be reinforced while continuing work, it can be constructed easily and reliably.

本発明の第1実施形態に係る天井落下防止構造が適用された天井の縦断面図および平面図である。It is the longitudinal cross-sectional view and top view of the ceiling to which the ceiling fall prevention structure concerning 1st Embodiment of this invention was applied. 前記実施形態に係る天井落下防止構造の拡大した縦断面図である。It is the expanded longitudinal cross-sectional view of the ceiling fall prevention structure which concerns on the said embodiment. 本発明の第2実施形態に係る天井落下防止構造の拡大斜視図である。It is an expansion perspective view of the ceiling fall prevention structure concerning a 2nd embodiment of the present invention. 本発明の第3実施形態に係る天井落下防止構造の拡大斜視図である。It is an expansion perspective view of the ceiling fall prevention structure concerning a 3rd embodiment of the present invention.

以下、本発明の実施形態を図面に基づいて説明する。なお、以下の実施形態の説明にあたって、同一構成要件については同一符号を付し、その説明を省略もしくは簡略化する。
〔第1実施形態〕
図1は、本発明の第1実施形態に係る天井落下防止構造としての天井落下防止装置10が適用された天井1の断面図および平面図である。
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description of the embodiments, the same constituent elements are denoted by the same reference numerals, and the description thereof is omitted or simplified.
[First Embodiment]
FIG. 1 is a cross-sectional view and a plan view of a ceiling 1 to which a ceiling fall prevention device 10 as a ceiling fall prevention structure according to a first embodiment of the present invention is applied.

天井1は、在来天井であり、鉄骨造の既存建物2内に設けられている。この既存建物2には、天井1全体の落下を防止する天井落下防止装置10が設けられている。
天井1は、上階の床躯体3から吊り下げられた吊りボルト21と、この吊りボルト21に支持されて略水平に延びる野縁受け22と、略水平でかつ野縁受け22に交差する方向に延びるとともに野縁受け22に支持される野縁23と、この野縁23の下面に張り付けられた天井面材24と、を備える。
The ceiling 1 is a conventional ceiling and is provided in an existing steel-framed building 2. The existing building 2 is provided with a ceiling fall prevention device 10 that prevents the entire ceiling 1 from falling.
The ceiling 1 has a suspension bolt 21 suspended from the floor frame 3 on the upper floor, a field edge receiver 22 that is supported by the suspension bolt 21 and extends substantially horizontally, and a direction that is substantially horizontal and intersects the field edge receiver 22. And a ceiling surface material 24 attached to the lower surface of the field edge 23.

野縁受け22を吊りボルト21に螺合されたハンガー211に嵌め込むことで、野縁受け22が吊りボルト21に支持される。また、野縁受け22と野縁23とが交差する箇所では、これら野縁受け22と野縁23との間に図示しないクリップを嵌め込むことで、野縁23が野縁受け22に支持される。   The field edge receiver 22 is supported by the suspension bolt 21 by fitting the field edge receiver 22 into the hanger 211 screwed to the suspension bolt 21. In addition, at the location where the field edge receiver 22 and the field edge 23 intersect, the field edge 23 is supported by the field edge receiver 22 by inserting a clip (not shown) between the field edge receiver 22 and the field edge 23. The

天井落下防止装置10は、天井1の天井裏空間の構造体としての鉄骨梁4に支持されて天井面材24よりも下方まで延びる複数の束材11と、これら複数の束材11間に架設された複数の受け材12と、これら複数の受け材12間に架設されて天井面材24の下方に位置する防護材13と、鉄骨梁4から束材11に延びるブレース14と、を備える。   The ceiling fall prevention device 10 is supported by a steel beam 4 as a structure of a ceiling space of the ceiling 1 and extends below the ceiling surface material 24, and is installed between the plurality of bundle materials 11. A plurality of receiving members 12, a protection member 13 that is installed between the plurality of receiving members 12 and is positioned below the ceiling surface member 24, and a brace 14 that extends from the steel beam 4 to the bundle member 11.

図2は、天井落下防止装置10の拡大した縦断面図である。
束材11は、例えば100×100のH鋼であり、接続プレート111を介して鉄骨梁4の下フランジにボルト固定されている。
天井面材24には、貫通孔241が形成されており、束材11は、この貫通孔241を通って天井面材24の下方に露出している。この貫通孔241と束材11との間には、地震動により天井1が揺れても、天井面材24が束材11に衝突しない程度の大きさの隙間が形成されている。
FIG. 2 is an enlarged longitudinal sectional view of the ceiling fall prevention device 10.
The bundle material 11 is, for example, 100 × 100 H steel, and is bolted to the lower flange of the steel beam 4 via the connection plate 111.
A through hole 241 is formed in the ceiling surface material 24, and the bundle material 11 is exposed below the ceiling surface material 24 through the through hole 241. A gap is formed between the through hole 241 and the bundle member 11 so that the ceiling member 24 does not collide with the bundle member 11 even if the ceiling 1 is shaken by the earthquake motion.

受け材12は、例えば100×100のH鋼であり、略水平かつ互いに略平行に延びている。具体的には、受け材12は、天井1の野縁受け22と略平行に延びている。これら受け材12は、接続プレート121を介して束材11の下端にボルト固定されている。   The receiving material 12 is, for example, 100 × 100 H steel, and extends substantially horizontally and substantially parallel to each other. Specifically, the receiving material 12 extends substantially in parallel with the field edge receiver 22 of the ceiling 1. These receiving members 12 are bolted to the lower ends of the bundle members 11 via connection plates 121.

防護材13は、例えば100×100のH鋼であり、略水平かつ互いに略平行に延びている。具体的には、防護材13は、受け材12と交差する方向、つまり天井1の野縁23と略平行に延びている。これら防護材13は、接続プレート131を介して受け材12の側面にボルト固定されている。   The protective material 13 is, for example, 100 × 100 H steel, and extends substantially horizontally and substantially parallel to each other. Specifically, the protective material 13 extends in a direction intersecting with the receiving material 12, that is, substantially parallel to the field edge 23 of the ceiling 1. These protective members 13 are bolted to the side surfaces of the receiving member 12 via connection plates 131.

ブレース14は、例えば100×100のH鋼である。このブレース14の一端側は接続プレート111を介して鉄骨梁4にボルト固定され、他端側は接続プレート141を介して束材11にボルト固定されている。   The brace 14 is, for example, 100 × 100 H steel. One end side of the brace 14 is bolted to the steel beam 4 via the connection plate 111, and the other end side is bolted to the bundle member 11 via the connection plate 141.

以上の天井落下防止装置10を、既存建物2の在来天井である天井1に取り付ける手順について説明する。
まず、天井1の天井面材24に貫通孔241を設け、この貫通孔241に束材11を挿通して、束材11を既存建物の鉄骨梁4に取り付ける。次に、束材11の下端同士の間に受け材12を取り付けて、その後、受け材12間に防護材13を取り付ける。
A procedure for attaching the above-described ceiling fall prevention device 10 to the ceiling 1 which is a conventional ceiling of the existing building 2 will be described.
First, a through hole 241 is provided in the ceiling surface material 24 of the ceiling 1, and the bundle material 11 is inserted into the through hole 241, and the bundle material 11 is attached to the steel beam 4 of the existing building. Next, the receiving material 12 is attached between the lower ends of the bundle material 11, and then the protective material 13 is attached between the receiving materials 12.

本実施形態によれば、以下のような効果がある。
(1)、想定外に大きな揺れが天井1に加わって、野縁23や野縁受け22などの天井材同士の連結が外れてしまっても、天井1は全体として防護材13に引っ掛かるので、天井1の構成部材や、ダクト、配線ラックなどの天井内重量物が落下するのを防止できる。
According to this embodiment, there are the following effects.
(1) Even if unexpectedly large shaking is applied to the ceiling 1 and the ceiling materials such as the field edge 23 and the field edge receiver 22 are disconnected from each other, the ceiling 1 is caught by the protective material 13 as a whole. It is possible to prevent falling of heavy components in the ceiling, such as components of the ceiling 1, ducts, and wiring racks.

また、既存建物2に天井落下防止装置10を取り付ける場合、天井裏空間では、配管や配線を避けて束材11を取り付けるだけでよいので、天井落下防止装置10を確実に施工できる。   Further, when the ceiling fall prevention device 10 is attached to the existing building 2, the ceiling fall prevention device 10 can be reliably constructed because it is only necessary to attach the bundle 11 while avoiding piping and wiring in the space behind the ceiling.

また、天井1の下で居住者の執務が継続中であっても、執務場所から離れた位置に束材11および受け材12を設置しておき、執務の合間に防護材13を受け材12の間に取り付ければよいので、天井落下防止装置10を確実に施工できる。   Even if the resident's work is ongoing under the ceiling 1, the bundle material 11 and the receiving material 12 are installed at a position away from the work place, and the protective material 13 is received between the work 12 and the receiving material 12. Therefore, the ceiling fall prevention device 10 can be reliably constructed.

(2)天井面材24の貫通孔241と束材11との間に隙間を形成したので、地震動により天井1が大きく揺れても、天井落下防止装置10は天井1の揺れの影響を受けないので、天井1の部材が落下するのを確実に防止できる。   (2) Since a gap is formed between the through hole 241 of the ceiling surface material 24 and the bundle material 11, the ceiling fall prevention device 10 is not affected by the shaking of the ceiling 1 even if the ceiling 1 is greatly shaken by the earthquake motion. Therefore, it can prevent reliably that the member of the ceiling 1 falls.

〔第2実施形態〕
図3は、本発明の第2実施形態に係る天井落下防止装置10Aの拡大斜視図である。
本実施形態では、防護材13Aの構造が、第1実施形態と異なる。
すなわち、受け材12の上フランジには、U字ピース122が溶接固定されている。
防護材13Aは、ワイヤー30の両端をU字ピース122の内部に挿通し、その後リング状に折り曲げて、ワイヤークランプ31およびワイヤークリップ32でかしめることにより形成される。
[Second Embodiment]
FIG. 3 is an enlarged perspective view of a ceiling fall prevention device 10A according to the second embodiment of the present invention.
In the present embodiment, the structure of the protective material 13A is different from that of the first embodiment.
That is, the U-shaped piece 122 is fixed to the upper flange of the receiving member 12 by welding.
The protective material 13 </ b> A is formed by inserting both ends of the wire 30 into the U-shaped piece 122, then bending the ring 30 into a ring shape, and caulking with the wire clamp 31 and the wire clip 32.

本実施形態によれば、上述の(1)、(2)と同様の効果がある。   According to the present embodiment, there are the same effects as the above (1) and (2).

〔第3実施形態〕
図4は、本発明の第3実施形態に係る天井落下防止装置10Bの拡大斜視図である。
本実施形態では、防護材13Bの構造が、第1実施形態と異なる。
すなわち、防護材13Bは、膜状の部材であり、受け材12の下フランジを覆うように設けられる。
[Third Embodiment]
FIG. 4 is an enlarged perspective view of a ceiling drop prevention device 10B according to the third embodiment of the present invention.
In the present embodiment, the structure of the protective material 13B is different from that of the first embodiment.
That is, the protective material 13B is a film-like member and is provided so as to cover the lower flange of the receiving material 12.

この防護材13Bは、以下の手順で取り付けられる。
図4中右側の受け材12の下フランジには、巻取り機40が設置されている。巻取り機40は、受け材12に沿って延びて防護材13が巻かれた円柱形状の巻取り芯41と、この巻取り芯41の中心軸を回転軸として、巻取り芯41を回転可能に支持する支持部42と、を備える。
This protective material 13B is attached in the following procedure.
A winder 40 is installed on the lower flange of the right receiving member 12 in FIG. The winding machine 40 can rotate the winding core 41 with the cylindrical winding core 41 extending along the receiving material 12 and wound with the protective material 13 and the central axis of the winding core 41 as a rotation axis. And a support portion 42 to be supported.

巻取り機40から防護材13Bを引き出して、先端側を図4中左側の受け材12の下フランジに固定し、次に、巻取り機40の巻取り芯41を回転させて、防護材13Bを巻き取ることにより、防護材13Bに張力を与える。その後、この状態で、防護材13Bを図4中右側の受け材12に固定する。   The protective material 13B is pulled out from the winder 40, the front end side is fixed to the lower flange of the receiving material 12 on the left side in FIG. 4, and then the winding core 41 of the winder 40 is rotated to protect the protective material 13B. Is applied to the protective material 13B. Thereafter, in this state, the protective material 13B is fixed to the receiving material 12 on the right side in FIG.

本実施形態によれば、上述の(1)、(2)と同様の効果がある。   According to the present embodiment, there are the same effects as the above (1) and (2).

なお、本発明は前記実施形態に限定されるものではなく、本発明の目的を達成できる範囲での変形、改良等は本発明に含まれるものである。
例えば、上述の各実施形態では、防護材13、13A、13Bとして、鉄骨材、ワイヤー、膜状の部材を用いたが、これに限らず、防護材としてメッシュ筋やパンチングメタルを用いてもよい。
It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.
For example, in each of the above-described embodiments, the steel material, the wire, and the film-like member are used as the protective material 13, 13A, and 13B. However, the present invention is not limited to this, and a mesh line or a punching metal may be used as the protective material. .

また、上述の各実施形態では、受け材12を鉄骨としたが、これに限らず、必要な強度を確保できれば、ワイヤーやロープのような紐材でもよい。
また、例えば、紐材を用いて、この紐材を編んだネットを構成し、このネットを天井より下方に突出する束材の下端部分に取り付けてもよい。このようにすれば、天井落下防止構造を軽量化できる。
また、上述の各実施形態では、天井1を在来天井としたが、これに限らず、システム天井にも適用できる。
Moreover, in each above-mentioned embodiment, although the receiving material 12 was made into the steel frame, not only this but a string material like a wire and a rope may be sufficient if required intensity | strength is securable.
Further, for example, a net knitted from the string material may be formed using a string material, and the net may be attached to the lower end portion of the bundle material protruding downward from the ceiling. In this way, the ceiling fall prevention structure can be reduced in weight.
Further, in each of the above-described embodiments, the ceiling 1 is a conventional ceiling, but the present invention is not limited to this and can be applied to a system ceiling.

1…天井
2…既存建物
3…上階の床躯体
4…鉄骨梁(構造体)
10、10A、10B…天井落下防止装置(天井落下防止構造)
11…束材
12…受け材
13、13A、13B…防護材
14…ブレース
21…ボルト
22…野縁受け
23…野縁
24…天井面材
30…ワイヤー
31…ワイヤークランプ
32…ワイヤークリップ
40…巻取り機
41…巻取り芯
42…支持部
111…接続プレート
121…接続プレート
122…U字ピース
131…接続プレート
141…接続プレート
211…ハンガー
241…貫通孔
DESCRIPTION OF SYMBOLS 1 ... Ceiling 2 ... Existing building 3 ... Floor structure of upper floor 4 ... Steel beam (structure)
10, 10A, 10B ... Ceiling fall prevention device (ceiling fall prevention structure)
DESCRIPTION OF SYMBOLS 11 ... Bundle material 12 ... Receiving material 13, 13A, 13B ... Protective material 14 ... Brace 21 ... Bolt 22 ... Field edge receiving 23 ... Field edge 24 ... Ceiling surface material 30 ... Wire 31 ... Wire clamp 32 ... Wire clip 40 ... Winding Take-up machine 41 ... Winding core 42 ... Supporting part 111 ... Connection plate 121 ... Connection plate 122 ... U-shaped piece 131 ... Connection plate 141 ... Connection plate 211 ... Hanger 241 ... Through hole

Claims (5)

天井の落下を防止する天井落下防止構造であって、
前記天井の天井裏空間の構造体に支持されて前記天井の天井面よりも下方まで貫通して延びる複数の束材と、
当該複数の束材間に架設された複数の受け材と、
当該複数の受け材間に架設されて前記天井面の下方に位置する防護材と、を備え、
前記束材の少なくとも一部には、前記構造体から当該束材に延びるブレースが設けられることを特徴とする天井落下防止構造。
A ceiling fall prevention structure that prevents the ceiling from falling,
A plurality of bundles that are supported by the structure of the ceiling space of the ceiling and extend downward from the ceiling surface of the ceiling; and
A plurality of receiving members constructed between the plurality of bundles;
A protective material provided between the plurality of receiving materials and positioned below the ceiling surface , and
At least a part of the bundle member is provided with a brace extending from the structure to the bundle member to prevent the ceiling from falling.
天井の落下を防止する天井落下防止構造であって、
前記天井の天井裏空間の構造体に支持されて前記天井の天井面よりも下方まで延びる複数の束材と、
当該複数の束材間に架設された複数の受け材と、
当該複数の受け材間に架設されて前記天井面の下方に位置する防護材と、を備え、
前記天井面には、前記束材が貫通する貫通孔が形成され、
当該天井面の貫通孔と前記束材との間には、隙間が形成されることを特徴とする天井落下防止構造。
A ceiling fall prevention structure that prevents the ceiling from falling,
A plurality of bundle members supported by the structure of the ceiling space of the ceiling and extending below the ceiling surface of the ceiling;
A plurality of receiving members constructed between the plurality of bundles;
A protective material provided between the plurality of receiving materials and positioned below the ceiling surface, and
The ceiling surface is formed with a through-hole through which the bundle material passes,
, The ceiling fall prevention structure you characterized in that a gap is formed between the through hole of the ceiling surface and the flux material.
前記防護材は、鉄骨材、ワイヤー、または膜状の部材であることを特徴とする請求項1または2に記載の天井落下防止構造。   The ceiling fall prevention structure according to claim 1 or 2, wherein the protection material is a steel frame material, a wire, or a film-like member. 前記受け材は、前記複数の束材の下端に固定されて、前記天井面に略平行に延びることを特徴とする請求項1から3のいずれかに記載の天井落下防止構造。4. The ceiling fall prevention structure according to claim 1, wherein the receiving member is fixed to lower ends of the plurality of bundle members and extends substantially parallel to the ceiling surface. 5. 天井の落下を防止する天井落下防止構造であって、
前記天井の天井裏空間の構造体に支持されて前記天井の天井面よりも下方まで貫通して延びる複数の束材と、
当該複数の束材の下端部に設けられた網状の防護材と、を備え、
前記束材の少なくとも一部には、前記構造体から当該束材に延びるブレースが設けられることを特徴とする天井落下防止構造。
A ceiling fall prevention structure that prevents the ceiling from falling,
A plurality of bundles that are supported by the structure of the ceiling space of the ceiling and extend downward from the ceiling surface of the ceiling; and
A net-like protective material provided at the lower end of the plurality of bundles ,
At least a part of the bundle member is provided with a brace extending from the structure to the bundle member to prevent the ceiling from falling.
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