JP6117961B1 - Suspended ceiling foundation structure on sloped roof and method of repairing existing suspended ceiling foundation - Google Patents
Suspended ceiling foundation structure on sloped roof and method of repairing existing suspended ceiling foundation Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 18
- 239000012779 reinforcing material Substances 0.000 claims abstract description 125
- 239000000463 material Substances 0.000 claims abstract description 81
- 239000000725 suspension Substances 0.000 claims abstract description 75
- 230000002787 reinforcement Effects 0.000 claims abstract description 33
- 230000003014 reinforcing effect Effects 0.000 claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 230000008439 repair process Effects 0.000 claims description 9
- 238000007689 inspection Methods 0.000 claims description 5
- 210000000078 claw Anatomy 0.000 description 5
- 238000004132 cross linking Methods 0.000 description 5
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000003351 stiffener Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000001629 suppression Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
【課題】勾配屋根における吊り天井の下地構造に関し、耐震性を向上させる。【解決手段】当課題に対して提案する吊り天井下地構造は、野縁１と、野縁１と直交する方向に延伸し、野縁１と接続される野縁受け２と、梁Ｈから垂下し、野縁受け２を懸吊する吊りボルト３と、野縁受け２から所定の距離上がった位置において野縁受け２と同じ方向に延伸し、野縁受け方向に配列されている吊りボルト３と接続される野縁受け方向補強材１０と、梁Ｈと梁Ｈの間に架け渡される梁間架橋材１１と、梁間架橋材１１と野縁受け方向補強材１０とを接続する懸吊補強材１２と、野縁受け２と野縁受け方向補強材１０との間に設けられるブレース材１４と、を少なくとも含む。【選択図】図１An object of the present invention is to improve seismic resistance of a foundation structure of a suspended ceiling in a sloped roof. A suspended ceiling foundation structure proposed for this problem includes a field edge 1, a field edge receiver 2 that extends in a direction orthogonal to the field edge 1, is connected to the field edge 1, and is suspended from a beam H. The suspension bolt 3 for suspending the field receiver 2 and the suspension bolt 3 extending in the same direction as the field receiver 2 at a position a predetermined distance above the field receiver 2 and arranged in the field receiver direction A field-reception direction reinforcing material 10 connected to the beam H, a beam-to-beam bridge material 11 bridged between the beams H and the beam H, and a suspension reinforcement material that connects the beam-to-beam bridge material 11 and the field-edge receiving direction reinforcement material 10 12 and the brace material 14 provided between the field edge receiver 2 and the field edge receiving direction reinforcing material 10. [Selection] Figure 1
Description
吊り天井、特に、折板屋根などの勾配屋根における吊り天井の下地構造に対する耐震補強に関し、以下に開示する。 Disclosed below is seismic reinforcement for suspension ceilings, particularly for foundation structures of suspended ceilings such as folded roofs.
平行に並べた野縁に化粧ボード等の天井材を取り付け、この野縁を、野縁と直交する方向に並べた野縁受けに固定し、そして、この野縁受けを吊りボルトにて懸吊する、吊り天井の下地構造に関し、特許文献１，２に開示されるような耐震補強の構造が採用されている。すなわち、野縁受けと吊りボルトの上部とをつなぐ斜めのブレース材を導入し、耐震性を高める構造である。しかし、体育館などの折板屋根における吊り天井の下地構造の場合、勾配屋根になっているので、梁から垂下する吊りボルトが、軒先部から棟部へ向かうにつれて長くなり、単にブレース材を導入するだけでは耐震性を十分に上げることができない。 A ceiling material such as a decorative board is attached to the field edges arranged in parallel, this field edge is fixed to a field edge receiver arranged in a direction perpendicular to the field edge, and this field edge receiver is suspended by a suspension bolt. As for the base structure of the suspended ceiling, the structure of seismic reinforcement as disclosed in Patent Documents 1 and 2 is adopted. That is, it is a structure in which an oblique brace material connecting the field edge receiver and the upper part of the suspension bolt is introduced to improve the earthquake resistance. However, in the case of the base structure of the suspended ceiling in a folded-plate roof such as a gymnasium, it is a sloped roof. It is not possible to improve the earthquake resistance sufficiently.
このような背景に鑑みて本発明は、吊りボルトが長くなる勾配屋根における吊り天井の下地構造に関し、耐震性を向上させる補強構造を提案する。 In view of such a background, the present invention relates to a base structure of a suspended ceiling in a sloped roof where a suspension bolt becomes long, and proposes a reinforcing structure that improves earthquake resistance.
当課題に対して提案する吊り天井下地構造は、
野縁と、
該野縁と直交する方向に延伸し、前記野縁と接続される野縁受けと、
勾配屋根の梁から垂下し、前記野縁受けを懸吊する吊りボルトと、
前記野縁受けから所定の距離上がった位置において前記野縁受けと同じ方向に延伸し、前記野縁受けの方向に配列されている前記吊りボルトと接続される野縁受け方向補強材と、
前記勾配屋根の梁と梁の間に架け渡される梁間架橋材と、
該梁間架橋材と前記野縁受け方向補強材とを接続する懸吊補強材と、
前記野縁受けと前記野縁受け方向補強材との間に設けられるブレース材と、
を含むことを特徴とする。
The suspended ceiling foundation structure proposed for this issue is
With the edge
A field receiver that extends in a direction perpendicular to the field edge and is connected to the field edge;
A hanging bolt that hangs down from the beam of the sloped roof and suspends the field edge receiver,
A field edge direction reinforcing material that extends in the same direction as the field edge receiver at a position a predetermined distance above the field edge receiver and is connected to the suspension bolts arranged in the direction of the field edge receiver,
A bridge material between beams spanned between the beams of the sloped roof;
A suspension reinforcing material connecting the inter-beam bridge material and the field edge receiving direction reinforcing material;
A brace material provided between the field edge receiver and the field edge receiving direction reinforcing material;
It is characterized by including.
上記吊り天井下地構造はさらに、前記野縁と同じ方向に延伸し、前記野縁受け方向補強材と接続される野縁方向補強材を含む構造とすることができる。この野縁方向補強材は、前記野縁受け方向補強材と前記吊りボルトとの交差位置を通って延伸し、当該交差位置において前記野縁受け方向補強材及び前記吊りボルトの両方と接続されるものとすると、耐震性向上の面でより好ましい。 The suspended ceiling foundation structure may further include a field edge direction reinforcing material that extends in the same direction as the field edge and is connected to the field edge receiving direction reinforcing material. The field edge direction reinforcing material extends through an intersection position between the field edge receiving direction reinforcement material and the suspension bolt, and is connected to both the field edge receiving direction reinforcement material and the suspension bolt at the intersection position. If it is, it is more preferable in terms of improving earthquake resistance.
一態様によると、前記野縁受け方向補強材、梁間架橋材、懸吊補強材及びブレース材には筒形鋼材（閉断面材）が使用される。また、前記野縁方向補強材にも筒形鋼材が使用され得る。前記野縁受け方向補強材、懸吊補強材及びブレース材のいずれか１つ以上に、断面ハット形のリインフォース部材を取り付けると強度がさらに向上する。 According to one aspect, a tubular steel material (closed cross-section material) is used for the field edge receiving direction reinforcing material, the inter-beam bridge material, the suspension reinforcing material and the brace material. Moreover, a cylindrical steel material can be used also for the said field edge direction reinforcing material. When a reinforcement member having a cross-sectional hat shape is attached to any one or more of the field edge receiving direction reinforcing material, the suspension reinforcing material, and the brace material, the strength is further improved.
この下地構造は、既存の吊り天井における下地改修に応用できる。
すなわち、野縁と、該野縁と直交して延伸し、前記野縁と接続される野縁受けと、勾配屋根の梁から垂下し、前記野縁受けを懸吊する吊りボルトと、を用いて構成されている既存の吊り天井における下地改修方法として、
前記既設の野縁受けから所定の距離上がった位置に、前記野縁受けと同じ方向に延伸する野縁受け方向補強材を追加して、前記野縁受けの方向に配列されている前記既設の吊りボルトと接続し、
前記勾配屋根の梁と梁の間に梁間架橋材を架け渡し、
該梁間架橋材と前記野縁受け方向補強材とを懸吊補強材により接続し、
前記既設の野縁受けと前記野縁受け方向補強材との間にブレース材を設ける、
ことを含む下地改修方法を提案する。
This foundation structure can be applied to the foundation modification of existing suspended ceilings.
That is, using a field edge, a field edge receiver that extends perpendicular to the field edge and is connected to the field edge, and a suspension bolt that hangs down from a beam of a sloped roof and suspends the field edge receiver As a method for repairing the foundation of existing suspended ceilings,
A field edge receiving direction reinforcing material extending in the same direction as the field edge receiver is added to a position that is a predetermined distance above the existing field edge receiver, and the existing edge array arranged in the direction of the field edge receiver. Connect with hanging bolts
Bridge the beam bridge between the beams of the sloped roof,
The inter-beam bridge material and the field edge receiving direction reinforcing material are connected by a suspended reinforcing material,
A brace material is provided between the existing field edge receiver and the field edge receiving direction reinforcing material,
We propose a method for repairing the groundwork.
上記吊り天井の下地改修方法においてはさらに、前記既設の野縁と同じ方向に延伸する野縁方向補強材を前記野縁受け方向補強材と接続してもよい。この野縁方向補強材の接続工程においては、前記野縁受け方向補強材と前記吊りボルトとの交差位置において、前記野縁受け方向補強材及び前記吊りボルトの両方に前記野縁方向補強材を接続するとよい。 In the above-described suspended ceiling base repairing method, a field edge direction reinforcing material extending in the same direction as the existing field edge may be connected to the field edge receiving direction reinforcing material. In the step of connecting the field edge direction reinforcing material, the field edge direction reinforcing material is applied to both the field edge receiving direction reinforcing material and the suspension bolt at the intersection of the field edge receiving direction reinforcing material and the hanging bolt. It is good to connect.
一態様において、前記野縁受け方向補強材、梁間架橋材、懸吊補強材及びブレース材には筒形鋼材（閉断面材）を使用する。また、前記野縁方向補強材にも筒形鋼材を使用するとよい。前記野縁受け方向補強材、懸吊補強材及びブレース材のいずれか１つ以上に、断面ハット形のリインフォース部材を取り付けることもできる。 In one aspect, a tubular steel material (closed cross-section material) is used for the field edge receiving direction reinforcing material, the inter-beam bridge material, the suspension reinforcing material, and the brace material. Moreover, it is good to use a cylindrical steel material also for the said field edge direction reinforcing material. A cross-section hat-shaped reinforcement member can also be attached to any one or more of the field edge receiving direction reinforcing material, the suspension reinforcing material, and the brace material.
上記特徴をもつ勾配屋根における吊り天井の下地構造は、屋根の勾配に従って長くなる吊りボルトの途中位置に補強材が配設され、且つこの補強材が吊りボルトとは別の懸吊補強材を介して梁から懸吊されて負荷を担当する。加えて、吊りボルトとは別に懸吊した補強材と野縁受けとの間にブレース材を設けて負荷を分担させている。したがって、吊りボルトの変形抑制と負荷分散により、従来の下地構造に比べて格段に揺れに強く変形し難い下地構造が実現される。さらに、既存の勾配屋根の吊り天井において、既設の野縁受けから上の適宜位置において吊りボルトに架け渡して野縁受け方向補強材を追加設置し、これに懸吊補強材及びブレース材を固定する方法により、既存の吊り天井に対して、その下地構造を耐震補強することが比較的容易にできる。 The foundation structure of the suspended ceiling in the sloped roof having the above-described characteristics is that a reinforcing material is disposed in the middle of the hanging bolt that becomes longer according to the slope of the roof, and this reinforcing material is interposed via a suspension reinforcing material different from the hanging bolt. It is suspended from the beam and takes charge of the load. In addition, a brace material is provided between the reinforcing material hung separately from the suspension bolt and the field edge receiver to share the load. Therefore, by suppressing the deformation of the suspension bolt and the load distribution, a base structure that is much more resistant to shaking and hardly deformed compared to the conventional base structure is realized. In addition, on existing suspended ceilings with sloped roofs, additional stiffeners and brace members are installed on the suspended bolts at appropriate positions above the existing staircases. By this method, it is relatively easy to seismically reinforce the foundation structure of an existing suspended ceiling.
図１に、一例として、勾配屋根である折板屋根の吊り天井について、本発明に係る下地構造の実施形態を示してある。
この吊り天井下地構造は、化粧ボード等の天井材を固定するための野縁１と、この野縁１と直交する方向に延伸し、野縁１と接続される野縁受け２と、折板屋根のＨ形鋼材からなる梁Ｈから垂下し、野縁受け２を懸吊する吊りボルト３と、を含んでいる。野縁１にはシングル野縁とダブル野縁とが使用され、シングル野縁の２本おきにダブル野縁を設けてある。野縁受け２には図２に示す筒形鋼材が使用され、野縁１との交差点において、図３に示すクリップ４を使用し野縁１と接続されている。吊りボルト３は、梁Ｈを貫通してボルト止めされ、該梁Ｈから垂下して、下端にボルト止めされたハンガーによって野縁受け２を保持し懸吊している。梁Ｈの位置が軒先部から棟部へ向かって高くなるので、棟部に近い吊りボルト３ほど長さが長くなる。
FIG. 1 shows, as an example, an embodiment of a ground structure according to the present invention for a suspended ceiling of a folded-plate roof that is a sloped roof.
The suspended ceiling foundation structure includes a field edge 1 for fixing a ceiling material such as a decorative board, a field edge receiver 2 extending in a direction orthogonal to the field edge 1 and connected to the field edge 1, and a folded plate A suspension bolt 3 that hangs down from a beam H made of an H-shaped steel material of the roof and suspends the field edge receiver 2 is included. For the field edge 1, a single field edge and a double field edge are used, and a double field edge is provided every two single field edges. A cylindrical steel material shown in FIG. 2 is used for the field edge receiver 2, and is connected to the field edge 1 using a clip 4 shown in FIG. 3 at an intersection with the field edge 1. The suspension bolt 3 is bolted through the beam H, hangs down from the beam H, and holds and suspends the field receiver 2 by a hanger bolted to the lower end. Since the position of the beam H becomes higher from the eaves portion toward the ridge, the length of the suspension bolt 3 closer to the ridge becomes longer.
野縁１と野縁受け２との接続に使用する図３に示すクリップ４は、例えば特願２０１４−１６９１９９にて特許出願済みのクリップと同類のものである。クリップ４は、Ｍバーの野縁１の端縁に形成されている折り返し部に係止部４ａを係止させて使用し、この係止部４ａから上方へ延びた挟持板部４ｂの間に、野縁受け２を挟み込んで挟持する。挟持板部４ｂは先端が鉤形に屈曲し、ここから上方へ締め付け板部４ｃが延出しており、この締め付け板部４ｃどうしをボルトで締め付けることで、野縁１と野縁受け２とが接続される。接続後、挟持板部４ｂに開けられたビス孔を通してビス留めもされる。また、クリップ４を設置した後、野縁１に対する当該クリップ４の位置が変わらないように、下向きコ字形のクリップストッパ４ｄをクリップ４の横に添えて野縁１へビス留めしておく。 The clip 4 shown in FIG. 3 used for connection between the field edge 1 and the field edge receiver 2 is similar to the clip for which a patent application has been filed in Japanese Patent Application No. 2014-169199, for example. The clip 4 is used by locking the locking portion 4a to the folded portion formed at the end edge of the field edge 1 of the M bar, and between the holding plate portion 4b extending upward from the locking portion 4a. , Sandwich the field edge receiver 2. The clamping plate portion 4b has a distal end bent into a bowl shape, and a clamping plate portion 4c extends upward from here. By tightening the clamping plate portions 4c with bolts, the field edge 1 and the field edge receiver 2 are connected to each other. Connected. After the connection, it is also screwed through a screw hole opened in the clamping plate portion 4b. In addition, after the clip 4 is installed, a downward U-shaped clip stopper 4d is attached to the side of the clip 4 and screwed to the field edge 1 so that the position of the clip 4 with respect to the field edge 1 does not change.
以上の野縁１、野縁受け２、吊りボルト３に追加して、野縁受け方向補強材１０、梁間架橋材１１、懸吊補強材１２、野縁方向補強材１３、ブレース材１４が設けられ、耐震補強構造が構成されている。本実施形態において、これら野縁受け方向補強材１０、梁間架橋材１１、懸吊補強材１２、野縁方向補強材１３、ブレース材１４には、いずれも図２に示す、高さ３２ｍｍ、幅１４ｍｍの筒形鋼材（すなわち、閉断面をもつ）が使用される。 In addition to the above field edge 1, field edge receiver 2, and suspension bolt 3, a field edge receiving direction reinforcing material 10, an inter-beam bridge material 11, a suspension reinforcing material 12, a field edge direction reinforcing material 13, and a brace material 14 are provided. Seismic reinforcement structure. In the present embodiment, the field edge receiving direction reinforcing material 10, the inter-beam bridge material 11, the suspension reinforcing material 12, the field edge direction reinforcing material 13 and the brace material 14 are all shown in FIG. A 14 mm tubular steel (ie with a closed cross section) is used.
野縁受け方向補強材１０は、野縁受け２から所定の距離上がった位置、すなわち本実施形態においては、一番長い棟部の吊りボルト３の中間位置（当該吊りボルトが３ｍとすれば野縁受けから１．５ｍ程度、あるいは１ｍ程度でもよい）において野縁受け２と同じ方向に延伸する。そして、野縁受け２の方向に配列されている吊りボルト３と接続される。 The field edge receiving direction reinforcing member 10 is positioned at a predetermined distance from the field edge receiver 2, that is, in this embodiment, the middle position of the suspension bolt 3 of the longest ridge (if the suspension bolt is 3 m, the field (It may be about 1.5 m or 1 m from the edge receiver). And it is connected with the suspension bolt 3 arranged in the direction of the field edge receiver 2.
梁間架橋材１１は、隣り合った梁Ｈと梁Ｈの間にそれぞれ架け渡される。この梁間架橋材１１を設置するための金具として、図４に示すフランジグリップ２０を使用する。フランジグリップ２０は、平行に向かい合った２枚の側壁部２１と、これら側壁部２１を連結する連結部２２とを備えている。連結部２２は側壁部２１よりも丈が短く、これにより、梁間架橋材１１を斜めに刺し通すための切欠部２３が形成されている。切欠部２３から２枚の側壁部２１の間に差し込まれた梁間架橋材１１は、ビス留めされる。両側壁部２１においては、連結部２２と反対側の側縁から切込部２４が形成されており、この切込部２４に、梁Ｈのフランジが差し込まれる。切込部２４内には上側に凹部２４ａが形成されていて、この凹部２４ａに平板ナット２５を受け入れられるようにしてある。平板ナット２５を通して上からボルトＢを締め込むことで、梁Ｈに固定したフランジグリップ２０の位置ずれが防止される。該ボルトＢには緩み止めナットＮが螺合される（図４Ｂ）。フランジグリップ２０は、梁Ｈの左右のフランジそれぞれに向かい合わせで差し込んだ２つを１組として使用し、その連結部２２にあるボルト孔２６を通し両者を貫通するボルトＢを利用して互いに対し締め付けることで、堅固に梁Ｈに固定される（図４Ａ）。 The cross-beam cross-linking material 11 is bridged between the beams H adjacent to each other. A flange grip 20 shown in FIG. 4 is used as a metal fitting for installing the inter-beam cross-linking material 11. The flange grip 20 includes two side wall portions 21 that face each other in parallel, and a connecting portion 22 that connects the side wall portions 21. The connecting part 22 is shorter than the side wall part 21, thereby forming a notch part 23 for piercing the cross-beam cross-linking material 11 obliquely. The inter-beam bridge member 11 inserted between the notch portion 23 and the two side wall portions 21 is screwed. In both side wall portions 21, a cut portion 24 is formed from a side edge opposite to the connecting portion 22, and a flange of the beam H is inserted into the cut portion 24. A recess 24a is formed in the cut portion 24 on the upper side, and the flat nut 25 can be received in the recess 24a. By tightening the bolt B from above through the flat nut 25, displacement of the flange grip 20 fixed to the beam H is prevented. A locking nut N is screwed onto the bolt B (FIG. 4B). The flange grip 20 is used as a set of two flanges that are inserted facing each of the left and right flanges of the beam H, and a bolt B passing through both of the bolt holes 26 in the connecting portion 22 is used. By tightening, it is firmly fixed to the beam H (FIG. 4A).
このようにして梁Ｈの間に架橋した梁間架橋材１１に対し、懸吊補強材１２によって野縁受け方向補強材１０が接続される。すなわち、懸吊補強材１２は、吊りボルト３とは別に、梁間架橋材１１から垂下して野縁受け方向補強材１０を懸吊する。 The edge receiving direction reinforcing material 10 is connected to the cross-beam cross-linking material 11 bridged between the beams H by the suspension reinforcing material 12. That is, the suspension reinforcing material 12 hangs from the inter-beam bridge material 11 and suspends the field edge receiving direction reinforcement material 10 separately from the suspension bolt 3.
本実施形態では、野縁１と同じ方向に延伸し（すなわち、野縁受け方向補強材１０と交差して）、野縁受け方向補強材１０と接続される野縁方向補強材１３が、さらに配設される。特に本実施形態における野縁方向補強材１３は、野縁受け方向補強材１０と吊りボルト３との交差位置を通って延伸しており、当該交差位置において野縁受け方向補強材１０及び吊りボルト３の両方と接続されている。このように吊りボルト３と野縁受け方向補強材１０及び野縁方向補強材１３とを接続する接続金具３０について、図５に示す。この接続金具３０は、特願２０１５−２３１４１１にて特許出願済みの接続金具で、補強材１０，１３を内側に収容してビス留めすることで保持する断面“コ”字形の補強材保持片３１と、この補強材保持片３１と組み合わさって吊りボルト３をくわえ込む断面“つ”字形ボルト固定片３２と、から構成されている。補強材保持片３１には“Ｕ”字形のボルト挿通切欠３１ａが側縁から切り欠き形成されていて、ここに吊りボルト３が通される。ボルト固定片３２にも“Ｕ”字形のボルト挿通切欠３２ａが前縁から切り欠き形成されていて、補強材保持片３１のボルト挿通切欠３１ａに通した吊りボルト３をそこに通すことができる。これらボルト挿通切欠３１ａとボルト挿通切欠３２ａとを直交させて補強材保持片３１へボルト固定片３２を組み付けることにより、補強材１０，１３と吊りボルト３とが接続される。野縁受け方向補強材１０と野縁方向補強材１３とは直交するので、両者に組み付けられた接続金具３０は９０°向きを違えて上下に重なり、その上と下から吊りボルト３に通したナットＮＷを締め込むことで（図５Ａ）、野縁受け方向補強材１０と野縁方向補強材１３と吊りボルト３とが互いに接続される。このときに使用するナットＮＷは、図５Ｃに示すような中間挿入ナット（割り込みナット）である。 In the present embodiment, the field edge direction reinforcing material 13 that extends in the same direction as the field edge 1 (that is, intersects with the field edge receiving direction reinforcing material 10) and is connected to the field edge receiving direction reinforcing material 10 is further provided. Arranged. In particular, the field edge direction reinforcing member 13 in the present embodiment extends through the crossing position of the field edge receiving direction reinforcing material 10 and the suspension bolt 3, and the field edge receiving direction reinforcing material 10 and the suspension bolt at the crossing position. 3 is connected. FIG. 5 shows the connection fitting 30 that connects the suspension bolt 3 to the field edge receiving direction reinforcing material 10 and the field edge direction reinforcing material 13 as described above. This connection fitting 30 is a connection fitting for which a patent application has been filed in Japanese Patent Application No. 2015-231411. The reinforcement holding piece 31 having a “U” -shaped cross section is held by accommodating the reinforcing members 10 and 13 and screwing them inside. And a cross-section “T” shaped bolt fixing piece 32 for holding the suspension bolt 3 in combination with the reinforcing material holding piece 31. A “U” -shaped bolt insertion notch 31 a is notched from the side edge of the reinforcing material holding piece 31, and the suspension bolt 3 is passed therethrough. The bolt fixing piece 32 is also formed with a “U” -shaped bolt insertion notch 32 a from the front edge, and the suspension bolt 3 passed through the bolt insertion notch 31 a of the reinforcing material holding piece 31 can be passed therethrough. The reinforcing members 10 and 13 and the suspension bolt 3 are connected by assembling the bolt fixing piece 32 to the reinforcing material holding piece 31 with the bolt inserting notch 31a and the bolt inserting notch 32a orthogonal to each other. Since the field edge direction reinforcing material 10 and the field edge direction reinforcing material 13 are orthogonal to each other, the connection fitting 30 assembled to both of them overlaps vertically with different 90 ° directions, and the nut NW passed through the suspension bolt 3 from above and below. By tightening (FIG. 5A), the field edge receiving direction reinforcing material 10, the field edge direction reinforcing material 13, and the suspension bolt 3 are connected to each other. The nut NW used at this time is an intermediate insertion nut (interrupt nut) as shown in FIG. 5C.
野縁受け２と野縁受け方向補強材１０との間には、ブレース材１４が筋交いに設けられる。ブレース材１４は、野縁受け方向に配列されている吊りボルト３の間に筋交いにして配設される。 A brace material 14 is provided between the field edge receiver 2 and the field edge receiving direction reinforcing material 10 in a brace. The brace material 14 is arranged in a brace between the suspension bolts 3 arranged in the field receiving direction.
野縁受け方向補強材１０と懸吊補強材１２、野縁受け２とブレース材１４、ブレース材１４と野縁受け方向補強材１０、及び懸吊補強材１２と梁間架橋材１１は、図６に示すブレースホルダー４０により接続される。このブレースホルダー４０は、例えば特願２０１４−１６９１９９にて特許出願済みのブレースホルダーと同類のものである。ブレースホルダー４０は、Ｈ字形の鋼板を折り曲げることで形成可能であり、野縁受け２、補強材１０，１２，１３、梁間架橋材１１、ブレース材１４を両側から挟持する２つのクランプ板部４１を有する。クランプ板部４１には多数のビス孔を開けてあり、このクランプ板部４１の間に野縁受け２、補強材１０，１２，１３、梁間架橋材１１、ブレース材１４を所望の相対角度で挟み込んでビス留めすることができる。 The edge receiving direction reinforcing material 10 and the suspension reinforcing material 12, the field edge receiving 2 and the brace material 14, the brace material 14 and the field receiving direction reinforcing material 10, and the suspension reinforcing material 12 and the inter-beam bridge material 11 are shown in FIG. 6. Are connected by a brace holder 40 shown in FIG. The brace holder 40 is similar to the brace holder for which a patent application has been filed in Japanese Patent Application No. 2014-169199, for example. The brace holder 40 can be formed by bending an H-shaped steel plate, and includes two clamp plate portions 41 that sandwich the field edge receiver 2, the reinforcing members 10, 12, 13, the inter-beam bridge member 11, and the brace member 14 from both sides. Have A large number of screw holes are formed in the clamp plate portion 41. Between the clamp plate portions 41, the edge receiver 2, the reinforcing members 10, 12, 13, the inter-beam bridge member 11, and the brace member 14 are formed at a desired relative angle. Can be pinched and screwed.
本実施形態では、最も高い棟部の梁Ｈから垂下する、一番長い吊りボルト３に対して、野縁受け方向補強材１０及び野縁方向補強材１３がもう一組、棟部に追加接続されている。当該野縁受け方向補強材１０は、両端が梁間架橋材１１へブレースホルダー４０を利用して接続されている。この野縁受け方向補強材１０と野縁方向補強材１３とは、接続金具３０により他の補強材同様に接続される。 In the present embodiment, another set of the field edge direction reinforcing material 10 and the field edge direction reinforcing material 13 is additionally connected to the ridge portion with respect to the longest suspension bolt 3 depending from the beam H of the highest ridge portion. Has been. Both ends of the field edge receiving direction reinforcing material 10 are connected to the cross-beam cross-linking material 11 using a brace holder 40. The field edge direction reinforcing material 10 and the field edge direction reinforcing material 13 are connected to each other by the connection fitting 30 in the same manner as other reinforcing materials.
本実施形態において、野縁受け方向補強材１０、懸吊補強材１２及びブレース材１４には、図７に示す断面ハット形のリインフォース部材５０をビス留めして取り付けてあり、耐荷重性能を上げて変形し難くしてある。このリインフォース部材５０は、後述する足場板を設置する場合にも利用可能である。 In this embodiment, the cross-sectional hat-shaped reinforcement member 50 shown in FIG. 7 is screwed and attached to the field edge direction reinforcing member 10, the suspension reinforcing member 12, and the brace member 14 to increase load bearing performance. It is difficult to deform. This reinforcement member 50 can be used also when installing the scaffold board mentioned later.
野縁受け方向補強材１０と野縁方向補強材１３とは、図８に示す連結金具６０を使用してそれぞれ長さを延長することができる。すなわち、連結金具６０に補強材１０，１３の端部を挿入してビス留めすることで、継ぎ足し延長される。 The lengths of the field edge direction reinforcing material 10 and the field edge direction reinforcing material 13 can be extended by using the connection fitting 60 shown in FIG. In other words, the ends of the reinforcing members 10 and 13 are inserted into the connecting fitting 60 and screwed to extend the connection.
上記の耐震構造は、屋根が長く（あるいは勾配が急で）、野縁受けと梁との間隔がより広くなる場合には、多層構造とすることもできる。すなわち、野縁受け方向補強材１０、懸吊補強材１２、野縁方向補強材１３、ブレース材１４を１層のセットにしてジャングルジムのように組んだ多層構造を形成してもよい。 The above earthquake-resistant structure may be a multi-layer structure when the roof is long (or the slope is steep) and the gap between the field edge receiver and the beam becomes wider. In other words, a multi-layer structure in which the field edge receiving direction reinforcing material 10, the suspension reinforcing material 12, the field edge direction reinforcing material 13, and the brace material 14 are assembled as a set of one layer may be formed.
以上の下地構造は、既存の吊り天井における下地改修方法として施工可能である。すなわち、上記の野縁１、野縁受け２、吊りボルト３を用いて構成されている既存の吊り天井に対して、天井材を野縁１から取り外した後、次のようにして耐震構造を組み入れることができる。なお、以下の各工程の順番は、施工現場の状況により入替可能である。 The above foundation structure can be constructed as a foundation repair method for an existing suspended ceiling. That is, after the ceiling material is removed from the field edge 1 with respect to the existing suspended ceiling configured using the field edge 1, field edge receiver 2, and suspension bolt 3, the earthquake resistant structure is formed as follows. Can be incorporated. In addition, the order of the following processes can be changed depending on the situation at the construction site.
既設の野縁受け２から所定の距離上がった位置、本実施形態では上述のように一番長い吊りボルト３の中間位置に、野縁受け２と同じ方向に延伸する野縁受け方向補強材１０を追加して、野縁受け方向に配列されている既設の吊りボルト３と、接続金具３０を使用して接続する。本実施形態ではさらに、既設の野縁１と同じ方向に延伸する野縁方向補強材１３を、野縁受け方向補強材１０と接続する。この野縁方向補強材１３を接続するときには、野縁受け方向補強材１０と吊りボルト３との交差位置において、接続金具３０を使用し、野縁受け方向補強材１０及び吊りボルト３の両方に野縁方向補強材１３を接続する。次に、勾配屋根の梁Ｈと梁Ｈの間に、フランジグリップ２０を使用して梁間架橋材１１を架け渡し設置する。そして、梁間架橋材１１と野縁受け方向補強材１０との間に、ブレースホルダー４０を使用して懸吊補強材１２を接続する。これにより、梁間架橋材１１を利用して懸吊補強材１２により野縁受け方向補強材１０が懸吊される。次に、既設の野縁受け２と野縁受け方向補強材１０との間にブレース材１４を、ブレースホルダー４０を使用して設ける。 A field edge direction reinforcing member 10 extending in the same direction as the field edge receiver 2 at a position a predetermined distance above the existing field edge receiver 2, in the present embodiment, at an intermediate position of the longest suspension bolt 3 as described above. And connecting with the existing suspension bolts 3 arranged in the field receiving direction using the connection fitting 30. In the present embodiment, the field edge direction reinforcing material 13 extending in the same direction as the existing field edge 1 is further connected to the field edge receiving direction reinforcing material 10. When connecting the field edge direction reinforcing material 13, the connection fitting 30 is used at the intersection of the field edge receiving direction reinforcing material 10 and the suspension bolt 3, and both the field edge receiving direction reinforcement material 10 and the suspension bolt 3 are used. The field edge reinforcement 13 is connected. Next, the bridge 11 between the beams is installed between the beams H of the sloped roof using the flange grip 20. Then, the suspension reinforcement member 12 is connected between the cross-beam bridge member 11 and the field edge receiving direction reinforcement member 10 using the brace holder 40. Thereby, the field edge receiving direction reinforcing material 10 is suspended by the suspension reinforcing material 12 using the inter-beam bridge material 11. Next, the brace material 14 is provided using the brace holder 40 between the existing field edge receiver 2 and the field edge receiving direction reinforcing material 10.
上述の通り、当該改修方法においては、野縁受け方向補強材１０、梁間架橋材１１、懸吊補強材１２、野縁方向補強材１３、そしてブレース材１４に、閉断面をもち変形に強い筒形鋼材を使用する。また、野縁受け方向補強材１０、懸吊補強材１２及びブレース材１４のいずれか１つ以上に、好ましくはこれら全てに、断面ハット形のリインフォース部材５０を取り付ける。 As described above, in the repair method, the field edge receiving direction reinforcing material 10, the cross-beam bridge material 11, the suspension reinforcing material 12, the field edge direction reinforcing material 13, and the brace material 14 have a closed cross section and are resistant to deformation. Use shape steel. Further, a reinforcement member 50 having a hat-shaped cross section is attached to any one or more of the field receiving direction reinforcing material 10, the suspension reinforcing material 12, and the brace material 14, preferably all of them.
以上説明した実施形態に係る勾配屋根の吊り天井下地構造によると、屋根の勾配に従って長くなる吊りボルト３の途中位置に補強材１０（及び１３）が配設され、且つこの補強材１０が吊りボルト３とは別の懸吊補強材１２を介して梁間架橋材１１、つまり梁Ｈから懸吊されて負荷を担当する。加えて、吊りボルト３とは別に懸吊した補強材１０と野縁受け２との間にブレース材１４を設けて負荷を分担させている。したがって、吊りボルト３の変形抑制と負荷分散により、従来の下地構造に比べて格段に揺れに強く変形し難い下地構造が実現される。さらに、既存の勾配屋根の吊り天井において、既設の野縁受け２から上の適宜位置において吊りボルト３に架け渡して野縁受け方向補強材１０を追加設置し、これに懸吊補強材１２及びブレース材１４を固定する方法により、既存の吊り天井に対して、その下地構造を耐震補強することが比較的容易にできる。 According to the suspended ceiling foundation structure of the sloped roof according to the embodiment described above, the reinforcing material 10 (and 13) is disposed in the middle of the hanging bolt 3 that becomes longer according to the slope of the roof, and the reinforcing material 10 is the hanging bolt. 3 is suspended from an inter-beam bridge member 11, that is, a beam H, via a suspension reinforcing member 12 different from 3, and takes charge of a load. In addition, a brace material 14 is provided between the reinforcing material 10 suspended separately from the suspension bolt 3 and the field edge receiver 2 to share the load. Therefore, the deformation | transformation suppression and load distribution of the suspension bolt 3 implement | achieve the foundation | substrate structure which cannot be deform | transformed strongly and hardly changed compared with the conventional foundation | substrate structure. Further, in the suspended ceiling of the existing sloped roof, a stiffener receiving direction reinforcing material 10 is additionally installed across the hanger bolt 3 at an appropriate position above the existing stiffener receiving 2, and the suspended reinforcing material 12 and By the method of fixing the brace material 14, it is relatively easy to reinforced the foundation structure with respect to an existing suspended ceiling.
上記吊り天井下地構造においては、図９に示す足場板７０を、野縁受け２の間又は野縁受け方向補強材１０の間に架け渡して足場とし、点検作業を行うことができる。すなわち、吊りボルト３に加えて懸吊補強材１２によって荷重が支えられるので、作業員の体重を十分に支えうる足場を形成することができる。足場板７０は、例えばアルミ製で、その両端から引き出すことのできる係止アーム７１を備えている。係止アーム７１は、ボルトＢにより適当な引き出し位置に固定することができ、野縁受け２間又は野縁受け方向補強材１０間の長さに適合させることが可能である。係止アーム７１の先端には回動爪７２が軸支されており、この回動爪７２を回転させ、該回動爪７２に設けたスリットをリインフォース部材５０の鍔部に噛み合わせることにより、足場板７０は確実に設置される。 In the above suspended ceiling foundation structure, the scaffold plate 70 shown in FIG. 9 can be bridged between the field edge receivers 2 or between the field edge receiving direction reinforcing members 10 to be used as a scaffold to perform inspection work. That is, since the load is supported by the suspension reinforcing material 12 in addition to the suspension bolt 3, a scaffold that can sufficiently support the weight of the worker can be formed. The scaffold plate 70 is made of, for example, aluminum and includes a locking arm 71 that can be pulled out from both ends thereof. The locking arm 71 can be fixed at an appropriate pull-out position by the bolt B, and can be adapted to the length between the field edge receivers 2 or between the field edge receiving direction reinforcing members 10. A rotation claw 72 is pivotally supported at the tip of the locking arm 71. By rotating the rotation claw 72, the slit provided in the rotation claw 72 is engaged with the flange portion of the reinforcement member 50, The scaffold board 70 is securely installed.
足場板７０を野縁受け２に架け渡す場合、隣り合う２本の野縁受け２に断面ハット形のリインフォース部材５０を取り付け、この取り付けたリインフォース部材５０に、足場板７０の端部となる係止アーム７０を回動爪７２により引っ掛けて固定する。これにより、当該野縁受け２の間に足場板７０を架け渡しておいて、この足場板７０を使用して点検を行う。 When the scaffold board 70 is bridged to the field receiver 2, a hat-shaped cross-section reinforcement member 50 is attached to two adjacent field receivers 2, and the attached reinforcement member 50 serves as an end of the scaffold board 70. The stop arm 70 is hooked and fixed by the rotating claw 72. As a result, the scaffold board 70 is bridged between the field receivers 2, and the scaffold board 70 is used for inspection.
足場板７０を野縁受け方向補強材１０に架け渡す場合、隣り合う２本の野縁受け方向補強材１０に取り付けられているリインフォース部材５０に、足場板７０の端部となる係止アーム７０を回動爪７２により引っ掛けて固定する。これにより、当該野縁受け方向補強材１０の間に足場板７０を架け渡しておいて、この足場板７０を使用して点検を行う。 When the scaffold plate 70 is bridged over the field edge receiving direction reinforcing member 10, the locking arm 70 serving as an end portion of the scaffold plate 70 is attached to the reinforcement member 50 attached to two adjacent field edge receiving direction reinforcing members 10. Is fixed by being hooked by the rotating claw 72. Thereby, the scaffold board 70 is spanned between the said field edge receiving direction reinforcing materials 10, and it checks using this scaffold board 70. FIG.
１ 野縁
２ 野縁受け
３ 吊りボルト
１０ 野縁受け方向補強材
１１ 梁間架橋材
１２ 懸吊補強材
１３ 野縁方向補強材
１４ ブレース材
DESCRIPTION OF SYMBOLS 1 Field edge 2 Field edge receiver 3 Suspension bolt 10 Field edge receiving direction reinforcement 11 Cross-beam bridge material 12 Suspension reinforcement 13 Field edge direction reinforcing material 14 Brace material
Claims (14)
該野縁と直交する方向に延伸し、前記野縁と接続される野縁受けと、
勾配屋根の梁から垂下し、前記野縁受けを懸吊する吊りボルトと、
前記野縁受けから所定の距離上がった位置において前記野縁受けと同じ方向に延伸し、前記野縁受けの方向に配列されている前記吊りボルトと接続される野縁受け方向補強材と、
前記勾配屋根の梁と梁の間に架け渡される梁間架橋材と、
該梁間架橋材と前記野縁受け方向補強材とを接続する懸吊補強材と、
前記野縁受けと前記野縁受け方向補強材との間に設けられるブレース材と、
を含む、吊り天井下地構造。 With the edge
A field receiver that extends in a direction perpendicular to the field edge and is connected to the field edge;
A hanging bolt that hangs down from the beam of the sloped roof and suspends the field edge receiver,
A field edge direction reinforcing material that extends in the same direction as the field edge receiver at a position a predetermined distance above the field edge receiver and is connected to the suspension bolts arranged in the direction of the field edge receiver,
A bridge material between beams spanned between the beams of the sloped roof;
A suspension reinforcing material connecting the inter-beam bridge material and the field edge receiving direction reinforcing material;
A brace material provided between the field edge receiver and the field edge receiving direction reinforcing material;
Suspended ceiling foundation structure including
前記既設の野縁受けから所定の距離上がった位置に、前記野縁受けと同じ方向に延伸する野縁受け方向補強材を追加して、前記野縁受けの方向に配列されている前記既設の吊りボルトと接続し、
前記勾配屋根の梁と梁の間に梁間架橋材を架け渡し、
該梁間架橋材と前記野縁受け方向補強材とを懸吊補強材により接続し、
前記既設の野縁受けと前記野縁受け方向補強材との間にブレース材を設ける、
ことを含む下地改修方法。 A field edge, a field edge receiver that extends perpendicular to the field edge and is connected to the field edge, and a suspension bolt that hangs down from a beam of a sloped roof and suspends the field edge receiver. It is a groundwork repair method for existing suspended ceilings,
A field edge receiving direction reinforcing material extending in the same direction as the field edge receiver is added to a position that is a predetermined distance above the existing field edge receiver, and the existing edge array arranged in the direction of the field edge receiver. Connect with hanging bolts
Bridge the beam bridge between the beams of the sloped roof,
The inter-beam bridge material and the field edge receiving direction reinforcing material are connected by a suspended reinforcing material,
A brace material is provided between the existing field edge receiver and the field edge receiving direction reinforcing material,
The groundwork repair method including that.
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| JP2014231680A (en) * | 2013-05-28 | 2014-12-11 | 鹿島建設株式会社 | Earthquake-resistant reinforcement structure of suspension ceiling |
| JP2015155632A (en) * | 2014-01-15 | 2015-08-27 | 株式会社佐藤型鋼製作所 | Ceiling backing structure |
| JP2015175156A (en) * | 2014-03-14 | 2015-10-05 | 株式会社佐藤型鋼製作所 | Installation metal fitting for diagonal reinforcement member |
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| JP2014231680A (en) * | 2013-05-28 | 2014-12-11 | 鹿島建設株式会社 | Earthquake-resistant reinforcement structure of suspension ceiling |
| JP2015155632A (en) * | 2014-01-15 | 2015-08-27 | 株式会社佐藤型鋼製作所 | Ceiling backing structure |
| JP2015175156A (en) * | 2014-03-14 | 2015-10-05 | 株式会社佐藤型鋼製作所 | Installation metal fitting for diagonal reinforcement member |
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