JP2016056661A

JP2016056661A - Suspended ceiling structure

Info

Publication number: JP2016056661A
Application number: JP2014186379A
Authority: JP
Inventors: 記彦櫻庭; Norihiko Sakuraba; 鈴木　健司; Kenji Suzuki; 健司鈴木
Original assignee: Shimizu Construction Co Ltd; Shimizu Corp
Current assignee: Shimizu Construction Co Ltd; Shimizu Corp
Priority date: 2014-09-12
Filing date: 2014-09-12
Publication date: 2016-04-21

Abstract

PROBLEM TO BE SOLVED: To provide a suspended ceiling structure capable of effectively and efficiently reinforcing a lower end side joining part of a reinforcement brace.SOLUTION: A brace joining part reinforcement structure 12 is provided around a lower end side joining part S of a reinforcement brace 7. The brace joining part reinforcement structure 12 also comprises a reinforcing main steel material 13 extended along one direction T1, a reinforcing connection steel material 14 extended along the other direction T2 and a suspended ceiling reinforcing metal fitting 15 for connecting and holding two steel materials among mutually orthogonally arranged reinforcing steel material 13, reinforcing connection steel material 14, main steel material 1 and connection steel material 5.SELECTED DRAWING: Figure 1

Description

本発明は、吊り天井の構造に関する。 The present invention relates to a suspended ceiling structure.

従来、例えば学校、病院、生産施設、体育館、プール、空港ターミナルビル、オフィスビル、劇場、シネコン等の建物の天井として、吊り天井が多用されている（例えば、特許文献１、特許文献２参照）。そして、吊り天井（吊り天井構造）Ａには、例えば図１３に示すように、水平の一方向Ｔ１に延設された複数のＴバー（断面逆Ｔ型の支持部材）１と、上端側を上階の床材（上部構造）等に固着し、下端側をＴバー１に接続して配設された複数の吊りボルト（吊り部材）２と、隣り合うＴバー１に架け渡すように配設されて天井面（天井部３）を形成する天井パネル４とを備えて構成したものがある。 Conventionally, suspended ceilings are frequently used as ceilings of buildings such as schools, hospitals, production facilities, gymnasiums, pools, airport terminal buildings, office buildings, theaters, cinecones, etc. (see, for example, Patent Document 1 and Patent Document 2). . The suspended ceiling (suspended ceiling structure) A has, for example, a plurality of T-bars (inverted T-shaped support members) 1 extending in one horizontal direction T1 and an upper end side as shown in FIG. A plurality of suspension bolts (suspension members) 2 which are fixed to the floor material (upper structure) on the upper floor and the lower end side is connected to the T-bar 1 and are arranged so as to be bridged between the adjacent T-bars 1. Some have a ceiling panel 4 that is provided and forms a ceiling surface (ceiling portion 3).

また、例えば図１４に示すように、複数のＴバー（断面逆Ｔ型の支持部材）１と、上端を上部構造に固着し、下端側をＴバー１に接続して配設された複数の吊り部材２と、隣り合うＴバー１に架け渡すように水平の一方向Ｔ１に直交する他方向Ｔ２に延設されるとともに一方向Ｔ１に所定の間隔をあけて配設された断面逆Ｔ型の連結Ｔバー（Ｔバー）５と、Ｔバー１と連結Ｔバー５からなる格子状の天井下地６にビス留めして一体に取り付けられて天井面（天井部３）を形成する天井パネル４とを備えて構成した吊り天井Ａが用いられている。 Further, for example, as shown in FIG. 14, a plurality of T bars (inverted T-shaped support members) 1 and a plurality of upper bars fixed to the upper structure and lower ends connected to the T bars 1 are arranged. An inverted T-shaped cross section that extends in the other direction T2 orthogonal to the horizontal one direction T1 so as to span between the suspension member 2 and the adjacent T-bar 1 and is disposed at a predetermined interval in one direction T1. And a ceiling panel 4 that is integrally attached by screwing to a lattice-like ceiling base 6 composed of the T bar 1 and the connecting T bar 5 to form a ceiling surface (ceiling portion 3). Suspended ceiling A is used.

一方、上記の吊り天井Ａにおいては、その構造上、地震時に作用する水平力によって横揺れしやすく、この横揺れにより、天井部３の端部が壁や柱、梁などの建物構成部材に衝突し、天井パネル４に破損が生じたり、脱落が生じるおそれがあった。このため、従来、図１３、図１４に示すように、上部構造などに上端側を接続し、下端側を吊りボルト２や、Ｔバー１、連結Ｔバー５などからなる天井下地６に接続して補強ブレース７を設け、天井下地６及び天井パネル４からなる天井部３の地震時の横揺れを抑えるようにしている。 On the other hand, the suspended ceiling A is easy to roll due to the horizontal force acting at the time of the earthquake because of the structure, and the end of the ceiling portion 3 collides with a building component such as a wall, a column, or a beam due to this roll. However, there is a possibility that the ceiling panel 4 is damaged or falls off. For this reason, conventionally, as shown in FIGS. 13 and 14, the upper end side is connected to the upper structure and the like, and the lower end side is connected to the ceiling base 6 composed of the suspension bolt 2, the T bar 1, the connecting T bar 5, and the like. The brace 7 is provided to suppress the rolling of the ceiling portion 3 including the ceiling base 6 and the ceiling panel 4 during an earthquake.

特開２００３−１３５４０号公報JP 2003-13540 A 特開２００３−１３８６８９号公報Japanese Patent Laid-Open No. 2003-138689

しかしながら、上記従来の吊り天井構造Ａにおいては、図１４及び図１５に示すように、地震時に外力が作用し、補強ブレース７に軸力が作用するとともに補強ブレース７の下端側の接合部Ｓに集中応力が作用し、この接合部Ｓに微小に面外倒れの変形が生じるケースがあった。 However, in the conventional suspended ceiling structure A, as shown in FIGS. 14 and 15, an external force acts during an earthquake, an axial force acts on the reinforcement brace 7, and a joint S on the lower end side of the reinforcement brace 7. In some cases, concentrated stress is applied, and the joint S is slightly deformed to fall out of the plane.

さらに、図１６に示すように、終局ではＴバー１（５）の引き抜け（すなわち、Ｔバー１（５）に天井パネル４を固着するビス８の引き抜け）が生じ、天井パネル４の落下を招くおそれがある。 Furthermore, as shown in FIG. 16, at the end, pulling out of the T bar 1 (5) occurs (that is, pulling out of the screw 8 for fixing the ceiling panel 4 to the T bar 1 (5)), and the ceiling panel 4 falls. May be incurred.

このため、特に、より線形な荷重変位曲線が求められる吊り天井に対し、補強ブレースの下端側の接合部を効果的且つ効率的に補強する手法が強く求められていた。 For this reason, there has been a strong demand for a method for effectively and efficiently reinforcing the joint portion on the lower end side of the reinforcing brace, particularly for a suspended ceiling that requires a more linear load displacement curve.

本発明は、上記事情に鑑み、補強ブレースの下端側の接合部を効果的且つ効率的に補強することを可能にした吊り天井構造を提供することを目的とする。 In view of the above circumstances, an object of the present invention is to provide a suspended ceiling structure that can effectively and efficiently reinforce a joint portion on the lower end side of a reinforcing brace.

上記の目的を達するために、この発明は以下の手段を提供している。 In order to achieve the above object, the present invention provides the following means.

本発明の吊り天井構造は、水平の一方向に延設される主鋼材及び他方向に延設される連結鋼材を格子状に組み付けてなる天井下地と、前記天井下地に下端側を接合して配設された補強ブレースとを備えた吊り天井構造において、前記補強ブレースの下端側の接合部の周囲にブレース接合部補強構造が設けられ、前記ブレース接合部補強構造が、前記一方向に沿って延設される補強用主鋼材と、前記他方向に沿って延設される補強用連結鋼材と、互いに直交配置される前記補強用主鋼材、前記補強用連結鋼材、前記主鋼材、前記連結鋼材のうちの２つの鋼材を接続して保持する吊り天井補強用金具とを備えて構成されていることを特徴とする。 The suspended ceiling structure of the present invention has a ceiling base formed by assembling a main steel material extending in one horizontal direction and a connecting steel material extending in the other direction in a lattice shape, and a lower end side is joined to the ceiling base. In the suspended ceiling structure provided with the reinforced brace disposed, a brace joint reinforcement structure is provided around the joint on the lower end side of the reinforcement brace, and the brace joint reinforcement structure extends along the one direction. The reinforcing main steel material extended, the connecting steel material reinforcing extending along the other direction, the reinforcing main steel material arranged orthogonal to each other, the reinforcing connecting steel material, the main steel material, and the connecting steel material It is characterized by being provided with the bracket for reinforcement of a suspended ceiling which connects and holds two of these steel materials.

本発明の吊り天井構造は、水平の一方向に延設される主鋼材及び他方向に延設される連結鋼材を格子状に組み付けてなる天井下地と、補強ブレース接続用金具を用いて前記天井下地に下端側を接合して配設された補強ブレースとを備えた吊り天井構造において、前記補強ブレース接続用金具が、略直交配置された一側壁板部と他側壁板部とを備えて略Ｌ字状に形成された４つの補強ブレース接続用金具片を備え、前記主鋼材と前記連結鋼材が十字状に配されてなる４つの入隅部にそれぞれ、前記一側壁板部を前記主鋼材に、前記他側壁板部を前記連結鋼材に接続して前記補強ブレース接続用金具片を設置するとともに、前記一側壁板部と前記主鋼材に、及び／又は前記他側壁板部と前記連結鋼材に前記補強ブレースの下端側を接続するように構成されていることを特徴とする。 The suspended ceiling structure according to the present invention includes a ceiling base formed by assembling a main steel material extending in one horizontal direction and a connecting steel material extending in the other direction in a lattice shape, and a reinforcing brace connecting bracket. In the suspended ceiling structure provided with a reinforcing brace arranged by joining the lower end side to the base, the reinforcing brace connecting bracket is substantially provided with one side wall plate portion and another side wall plate portion arranged substantially orthogonally. Four reinforcing brace connecting metal pieces formed in an L-shape are provided, and the one side wall plate portion is provided in each of four corners formed by arranging the main steel material and the connecting steel material in a cross shape. The other side wall plate portion is connected to the connecting steel material to install the reinforcing brace connecting metal piece, and the one side wall plate portion and the main steel material and / or the other side wall plate portion and the connecting steel material. So that the lower end of the reinforcing brace is connected to Made is characterized in that is.

本発明の吊り天井構造は、水平の一方向に延設される主鋼材及び他方向に延設される連結鋼材を格子状に組み付けてなる天井下地と、前記天井下地に下端側を接合して配設された補強ブレースとを備えた吊り天井構造において、上記のブレース接合部補強構造と、上記の補強ブレース接続用金具とを備えて構成されていることを特徴とする。 The suspended ceiling structure of the present invention has a ceiling base formed by assembling a main steel material extending in one horizontal direction and a connecting steel material extending in the other direction in a lattice shape, and a lower end side is joined to the ceiling base. A suspended ceiling structure provided with a reinforcing brace arranged is characterized by comprising the brace joint reinforcing structure and the reinforcing brace connection fitting.

本発明の吊り天井構造においては、第一に、吊り天井補強用金具で接続して補強ブレースの下端側接合部の周囲に補強用主鋼材や補強用連結鋼材を追加することができ（ブレース接合部補強構造を設けることができ）、さらに補強ブレースの下端側接合部の周囲のビス止め数が増やすことができ、補強ブレースの下端側接合部の周囲の面外剛性を大幅に向上させることができる。 In the suspended ceiling structure of the present invention, first, a reinforcing main steel material and a reinforcing connecting steel material can be added around the lower end side joint portion of the reinforcing brace by connecting with a suspended ceiling reinforcing bracket (brace bonding). Part reinforcement structure can be provided), the number of screws around the lower end side joint part of the reinforcement brace can be increased, and the out-of-plane rigidity around the lower end side joint part of the reinforcement brace can be greatly improved. it can.

これにより、補強ブレースの下端側接合部を効果的且つ効率的に補強することができるとともに、復元力特性を大幅に向上させ、優れた耐震性能を付与することが可能になる。 Thereby, while being able to reinforce the lower end side junction part of a reinforcement brace effectively and efficiently, it becomes possible to improve a restoring force characteristic significantly and to provide the outstanding seismic performance.

また、本発明の吊り天井構造においては、第二に、主鋼材と連結鋼材が十字状に配されてなる４つの入隅部にそれぞれ略Ｌ字状の補強ブレース接続用金具片を設置し、略十字状を呈するように補強ブレース接続用金具が設置される。このため、補強ブレース接続用金具片の一側壁板部と主鋼材に下端側を接続した補強ブレースに軸力が作用して、補強ブレースの下端側の接合部に面外倒れを生じさせる力が作用した場合であっても、この面外倒れを生じさせる力を各補強ブレース接続用金具片の他側壁板部で受けることができる。 In addition, in the suspended ceiling structure of the present invention, secondly, each of the approximately L-shaped reinforcing brace connecting bracket pieces is installed at the four corners in which the main steel material and the connecting steel material are arranged in a cross shape, Reinforcing brace fittings are installed so as to have a substantially cross shape. For this reason, an axial force acts on the reinforcing brace in which the lower end side is connected to the one side wall plate portion of the reinforcing brace connecting metal piece and the main steel material, and there is a force that causes the joint portion on the lower end side of the reinforcing brace to fall out of plane. Even if it acts, the force that causes the out-of-plane tilting can be received by the other side wall plate portion of each reinforcing brace connecting bracket piece.

これにより、地震時に補強ブレースに軸力が作用し、補強ブレースの下端側の接合部に集中応力が作用した場合であっても、この接合部に微小に面外倒れの変形が生じることを防止できる。 As a result, even if an axial force acts on the reinforcement brace during an earthquake and concentrated stress acts on the joint on the lower end side of the reinforcement brace, it is possible to prevent this joint from undergoing slight out-of-plane deformation. it can.

よって、補強ブレースの下端側の接合部に面外倒れの変形が生じて、主鋼材（Ｔバー）に引き抜け、すなわち、主鋼材に天井パネルを固着するビスの引き抜けが生じて天井パネルの落下を招くおそれを確実に解消することが可能になり、補強ブレースの下端側接合部を効果的且つ効率的に補強することができるとともに、復元力特性を大幅に向上させ、優れた耐震性能を付与することが可能になる。 Therefore, the joint part on the lower end side of the reinforcing brace is deformed to fall out of the plane and pulled out to the main steel material (T bar), that is, the screw for fixing the ceiling panel to the main steel material is pulled out, and the ceiling panel It is possible to reliably eliminate the possibility of falling, and it is possible to effectively and efficiently reinforce the lower end side joint part of the reinforcement brace, while greatly improving the restoring force characteristics, and excellent earthquake resistance performance It becomes possible to grant.

本発明の一実施形態に係る吊り天井構造を示す天井裏側からの平面視図である。It is a top view from the ceiling back side which shows the suspended ceiling structure which concerns on one Embodiment of this invention. （ａ）Ｔバーと、（ｂ）Ｔバーを切断して形成した補強用Ｔバー（補強用連結Ｔバー）を示す斜視図である。It is a perspective view which shows (a) T bar and (b) T bar for reinforcement (cutting connection T bar) formed by cut | disconnecting T bar. 本発明の一実施形態に係る吊り天井構造のＴバーと連結Ｔバーの接続部分を示す斜視図である。It is a perspective view which shows the connection part of T bar and connection T bar of the suspended ceiling structure which concerns on one Embodiment of this invention. 本発明の一実施形態に係る吊り天井補強用金具を示す正面図である。It is a front view which shows the hanging ceiling reinforcement metal fitting which concerns on one Embodiment of this invention. 図４のＸ１−Ｘ１線矢視図である。It is a X1-X1 line arrow directional view of FIG. 図４のＸ２−Ｘ２線矢視図である。FIG. 5 is a view taken along line X2-X2 in FIG. 4. 本発明の一実施形態に係る吊り天井の補強ブレース接続用金具を用いて補強ブレースの下端側を接続した接合部を示す斜視図である。It is a perspective view which shows the junction part which connected the lower end side of the reinforcement brace using the metal fitting for reinforcement brace connection of the suspended ceiling which concerns on one Embodiment of this invention. 本発明の一実施形態に係る吊り天井の補強ブレース接続用金具を用いて補強ブレースの下端側を接続した接合部を示す平面図である。It is a top view which shows the junction part which connected the lower end side of the reinforcement brace using the bracket for reinforcement brace connection of the suspended ceiling which concerns on one Embodiment of this invention. 本発明の一実施形態に係る吊り天井の補強ブレース接続用金具を示す平面図である。It is a top view which shows the bracket for reinforcement brace connection of the suspended ceiling which concerns on one Embodiment of this invention. 図９のＸ１−Ｘ１線矢視図であり、本発明の一実施形態に係る吊り天井の補強ブレース接続用金具を示す側面図である。FIG. 10 is a side view taken along the line X1-X1 of FIG. 9 and shows a bracket for reinforcing brace connection for a suspended ceiling according to an embodiment of the present invention. 図９のＸ２−Ｘ２線矢視図であり、本発明の一実施形態に係る吊り天井の補強ブレース接続用金具を示す側面図である。FIG. 10 is a side view taken along line X2-X2 of FIG. 9 and shows a bracket for reinforcing brace connection for a suspended ceiling according to an embodiment of the present invention. 本発明の一実施形態に係る吊り天井構造と、従来の吊り天井構造のスリップモデルを比較した図である。It is the figure which compared the slip model of the suspended ceiling structure which concerns on one Embodiment of this invention, and the conventional suspended ceiling structure. 従来の吊り天井構造を示す天井裏側からの斜視図である。It is a perspective view from the ceiling back side which shows the conventional suspended ceiling structure. 吊り天井構造を示す天井裏側からの斜視図である。It is a perspective view from the ceiling back side which shows a suspended ceiling structure. 従来の補強ブレースの下端側接合部を示す斜視図である。It is a perspective view which shows the lower end side junction part of the conventional reinforcement brace. 補強ブレースの下端側接合部を示す正面図である。It is a front view which shows the lower end side junction part of a reinforcement brace.

以下、図１から図１２（及び図１４、図１５、図１６）を参照し、本発明の一実施形態に係る吊り天井構造について説明する。 Hereinafter, a suspended ceiling structure according to an embodiment of the present invention will be described with reference to FIGS. 1 to 12 (and FIGS. 14, 15, and 16).

図１（及び図１４）に示すように、本実施形態の吊り天井構造Ｂは、従来の吊り天井構造Ａと同様、水平の一方向Ｔ１に延設され、一方向Ｔ１に直交する他方向Ｔ２に所定の間隔をあけて配設される複数のＴバー（断面逆Ｔ型の主鋼材、鋼材）１と、上端を上部構造に固着し、下端側をＴバー１に接続して配設された複数の吊りボルト（吊り部材）２と、他方向Ｔ２に延び、隣り合うＴバー１に架け渡して連結し、一方向Ｔ１に所定の間隔をあけて配設される複数の断面逆Ｔ型の連結Ｔバー（連結鋼材、鋼材）５と、天井下地６にビス留めして一体に取り付けられて天井面（天井部３）を形成する天井パネル（天井材）４とを備えて構成されている。 As shown in FIG. 1 (and FIG. 14), the suspended ceiling structure B of the present embodiment is extended in one horizontal direction T1 and is orthogonal to the one direction T1, similarly to the conventional suspended ceiling structure A. A plurality of T bars (inverted T-shaped main steel, steel) 1 arranged at predetermined intervals, and an upper end fixed to the upper structure and a lower end connected to the T bar 1 are arranged. A plurality of suspension bolts (suspension members) 2 extending in the other direction T2, connected across the adjacent T-bars 1 and arranged in the one direction T1 at a predetermined interval and having a plurality of inverted T-sections. And a ceiling panel (ceiling material) 4 that is screwed to the ceiling base 6 and integrally attached to form a ceiling surface (ceiling part 3). Yes.

また、Ｔバー１と連結Ｔバー５、すなわち、格子状に組み付けられた鋼材によって天井下地６が構成されている。さらに、本実施形態では、隣り合うＴバー１の間隔を９１０ｍｍ、隣り合う連結Ｔバー５の間隔を４５５ｍｍとして天井下地６が構成されている。 Further, the ceiling base 6 is composed of the T bar 1 and the connecting T bar 5, that is, a steel material assembled in a lattice shape. Furthermore, in the present embodiment, the ceiling base 6 is configured with the interval between adjacent T bars 1 being 910 mm and the interval between adjacent connecting T bars 5 being 455 mm.

また、図１４に示すように、補強ブレース７は、ブレース接続用金具３０を用いて、天井下地６に接続して設けられている。このとき、本実施形態では、一方向Ｔ１に一対の補強ブレース７がＶ型を呈するように並設されている。 Further, as shown in FIG. 14, the reinforcing brace 7 is provided by being connected to the ceiling base 6 using a brace connection fitting 30. At this time, in this embodiment, the pair of reinforcing braces 7 are arranged side by side so as to exhibit a V shape in one direction T1.

また、吊りボルト２は、吊り部材接続用金具１１を介して天井下地６のＴバー１に下端側を接続して設けられ、天井下地６を吊り下げ支持している。 In addition, the suspension bolt 2 is provided by connecting the lower end side to the T bar 1 of the ceiling base 6 via the suspension member connection metal fitting 11 and supports the ceiling base 6 in a suspended manner.

さらに、天井下地６の下面に、例えば直貼岩綿吸音板のような軽量の天井パネル４が、ビス８を下側からこの天井パネル４、天井下地６に貫通させて固設されている。このように複数の天井パネル４を天井下地６に取り付けることで天井面が形成されている。 Further, a lightweight ceiling panel 4 such as a directly-attached rock wool sound absorbing board is fixed on the lower surface of the ceiling base 6 with a screw 8 penetrating from the lower side to the ceiling panel 4 and the ceiling base 6. In this way, the ceiling surface is formed by attaching the plurality of ceiling panels 4 to the ceiling base 6.

そして、上記のようなブレース接続用金具３０を用いて補強ブレース７が天井下地６に強固に固着され、さらに吊り部材接続用金具１１を用いて吊りボルト２が天井下地６に強固に固着されているため、地震が発生した際に、天井慣性力（水平力）が天井下地６を通じて補強ブレース７に伝達されることになる。 The reinforcing brace 7 is firmly fixed to the ceiling base 6 using the brace connecting bracket 30 as described above, and the suspension bolt 2 is firmly fixed to the ceiling base 6 using the hanging member connecting bracket 11. Therefore, when an earthquake occurs, the ceiling inertia force (horizontal force) is transmitted to the reinforcing brace 7 through the ceiling base 6.

一方、本実施形態の吊り天井構造Ｂにおいては、図１に示すように、補強ブレース７の下端側の接合部Ｓ（ブレース接続用金具３０）を中央とし、この接合部Ｓの周囲（天井下地６の一部）にブレース接合部補強構造１２が設けられている。 On the other hand, in the suspended ceiling structure B of the present embodiment, as shown in FIG. 1, the joint portion S (brace connecting bracket 30) on the lower end side of the reinforcing brace 7 is the center, and the periphery of the joint portion S (ceiling base) 6) is provided with a brace joint reinforcement structure 12.

このブレース接合部補強構造１２は、一方向Ｔ１に沿って延設され、両端部をそれぞれ隣り合う連結Ｔバー５に接続して配設される補強用Ｔバー（補強用主鋼材）１３と、他方向Ｔ２に沿って延設され、両端部をＴバー１及び／又は補強用Ｔバー１３に接続して配設される補強用連結Ｔバー（補強用連結鋼材）１４と、互いに直交配置される補強用Ｔバー１３、補強用連結Ｔバー１４、Ｔバー１、連結Ｔバー５のうちの２つの鋼材を接続して保持するための吊り天井補強用金具１５とを備えて構成されている。 The brace joint reinforcement structure 12 extends along one direction T1, and has a reinforcing T bar (reinforcing main steel material) 13 that is disposed by connecting both ends to the adjacent connecting T bars 5. Reinforcing connection T-bars (reinforcing connecting steel members) 14 that extend along the other direction T2 and are connected to both ends of the T-bar 1 and / or the reinforcing T-bar 13 are arranged orthogonal to each other. A reinforcing T bar 13, a reinforcing connecting T bar 14, a T bar 1, and a suspended ceiling reinforcing metal fitting 15 for connecting and holding two steel members of the connecting T bar 5. .

また、本実施形態の補強用Ｔバー１３は、図２に示すように、Ｔバー１を切断し所定の長さ寸法にして形成したものであり、４５５ｍｍの長さで形成されている。そして、本実施形態では、補強ブレース７の下端側の接合部ＳのＴバー１を間にした他方向Ｔ２の前後にそれぞれ２２７．５ｍｍの間隔をあけ、計４本の補強用Ｔバー１３が配設されている。 Further, as shown in FIG. 2, the reinforcing T-bar 13 of the present embodiment is formed by cutting the T-bar 1 to have a predetermined length, and has a length of 455 mm. In this embodiment, a total of four reinforcing T bars 13 are provided at intervals of 227.5 mm before and after the other direction T2 with the T bar 1 of the joint S on the lower end side of the reinforcing brace 7 in between. It is arranged.

補強用連結Ｔバー１４は、図２に示すように、連結Ｔバー５を切断し所定の長さ寸法にして形成したものであり、２２７．５ｍｍの長さで形成されている。そして、本実施形態では、補強ブレース７の下端側の接合部Ｓを間にした一方向Ｔ１の前後にそれぞれ２２７．５ｍｍの間隔をあけ、計４本の補強用連結Ｔバー１４が配設されている。 As shown in FIG. 2, the reinforcing connection T-bar 14 is formed by cutting the connection T-bar 5 to have a predetermined length, and has a length of 227.5 mm. In the present embodiment, a total of four reinforcing connecting T-bars 14 are arranged with a spacing of 227.5 mm before and after one direction T1 with the joint S on the lower end side of the reinforcing brace 7 therebetween. ing.

ここで、図２及び図３に示すように、Ｔバー１や連結Ｔバー５は、所定の長さに形成されるとともに、その両端部に固着して固定金具１６が長さ方向外側に突設されている。また、Ｔバー１や連結Ｔバー５には、固定金具１６を差し込んで接続するための接続用孔１７が貫通形成されている。そして、一方向Ｔ１または他方向Ｔ２に隣り合うＴバー１や連結Ｔバー５の固定金具１６を接続用孔１７に差し込み、互いの固定金具を折り曲げる（かしめる）ことで一体に接続するように構成されている。 Here, as shown in FIGS. 2 and 3, the T bar 1 and the connecting T bar 5 are formed to have a predetermined length, and are fixed to both ends thereof so that the fixing bracket 16 protrudes outward in the length direction. It is installed. The T-bar 1 and the connecting T-bar 5 are formed with through-holes 17 for inserting and connecting the fixing bracket 16 therethrough. Then, the fixing brackets 16 of the T bar 1 and the connecting T bar 5 adjacent to each other in one direction T1 or the other direction T2 are inserted into the connection holes 17, and the respective fixing brackets are bent (caulked) so as to be integrally connected. It is configured.

一方、本実施形態では、図２に示すように、補強用Ｔバー１３や補強用連結Ｔバー１４としてＴバー１や連結Ｔバー５を所定の長さに切断したものを使用するため、各補強用Ｔバー１３や補強用連結Ｔバー１４は、例えば一端部に固定金具１６があるのに対し、切断して形成された他端部に固定金具１６がない。 On the other hand, in the present embodiment, as shown in FIG. 2, as the reinforcing T bar 13 and the reinforcing connecting T bar 14, those obtained by cutting the T bar 1 and the connecting T bar 5 to a predetermined length are used. The reinforcing T-bar 13 and the reinforcing connecting T-bar 14 have, for example, a fixing bracket 16 at one end, but do not have the fixing bracket 16 at the other end formed by cutting.

このような補強用Ｔバー１３や補強用連結Ｔバー１４の固定金具１６がない端部をＴバー１や連結Ｔバー５、補強用Ｔバー１３に接続するために、本実施形態では吊り天井用補強金具１５を用いる。 In order to connect the ends of the reinforcing T bar 13 and the reinforcing connecting T bar 14 without the fixing bracket 16 to the T bar 1, the connecting T bar 5, and the reinforcing T bar 13, in this embodiment, the suspended ceiling The reinforcing metal fitting 15 is used.

本実施形態の吊り天井用補強金具１５は、図４から図６に示すように、所定の間隔をあけて対向配置される一対の側板部２０、２１と一対の側板部２０、２１の上端を連結する天板部２２とからなる第１接続部２３と、所定の間隔をあけて対向配置される一対の側板部２４、２５と一対の側板部２４、２５の上端を連結する天板部２６とからなり、第１接続部２３の長さ方向略中央に一側端を繋げ、直交配置された第２接続部２７とを備えて略Ｔ字状に形成されている。
また、各側板部２０、２１、２４、２５には、ビス（あるいはボルト）を挿通するすための挿通孔２８が貫通形成されている。 As shown in FIG. 4 to FIG. 6, the suspended ceiling reinforcing bracket 15 of the present embodiment has a pair of side plate portions 20, 21 and an upper end of the pair of side plate portions 20, 21 arranged to face each other at a predetermined interval. A first connecting portion 23 composed of a top plate portion 22 to be connected, a pair of side plate portions 24 and 25 arranged to face each other at a predetermined interval, and a top plate portion 26 for connecting the upper ends of the pair of side plate portions 24 and 25. The first connection portion 23 is formed in a substantially T-shape with a second connection portion 27 that is connected to one side end at substantially the center in the length direction and arranged orthogonally.
Each side plate portion 20, 21, 24, 25 is formed with an insertion hole 28 through which a screw (or bolt) is inserted.

そして、図１、図４から図６に示すように、固定金具１６で一端部を接続し各補強用Ｔバー１３や補強用連結Ｔバー１４を補強ブレース７の下端側の接合部Ｓの周囲に配設する。これとともに、補強用Ｔバー１３や補強用連結Ｔバー１４の他端部側が配され、Ｔ字状に交差する連結Ｔバー５、補強用Ｔバー１３や補強用連結Ｔバー１４の各交差部に、第１接続部２３の一対の側板部２０、２１、第２接続部２７の一対の側板部２４、２５の間に連結Ｔバー５、補強用Ｔバー１３や補強用連結Ｔバー１４を上方から嵌め込んでＴ字状の吊り天井補強用金具１５を取り付ける。 As shown in FIGS. 1 and 4 to 6, one end portion is connected by a fixing bracket 16, and each reinforcing T bar 13 or reinforcing connecting T bar 14 is surrounded by a joint S on the lower end side of the reinforcing brace 7. It arranges in. At the same time, the other end side of the reinforcing T bar 13 and the reinforcing connecting T bar 14 is arranged, and each of the intersecting portions of the connecting T bar 5, the reinforcing T bar 13 and the reinforcing connecting T bar 14 intersecting in a T shape. The connecting T bar 5, the reinforcing T bar 13, and the reinforcing connecting T bar 14 are disposed between the pair of side plate portions 20 and 21 of the first connection portion 23 and the pair of side plate portions 24 and 25 of the second connection portion 27. The T-shaped suspended ceiling reinforcing metal fitting 15 is attached by fitting from above.

また、各吊り天井補強用金具１５の各側板部２０、２１、２４、２５に形成された挿通孔２８にビスやボルトを挿通させ、吊り天井補強用金具１５の第１接続部２３、第２接続部２７をそれぞれ連結Ｔバー５、補強用Ｔバー１３や補強用連結Ｔバー１４に固着する。 Further, screws and bolts are inserted into the insertion holes 28 formed in the side plate portions 20, 21, 24, 25 of each suspended ceiling reinforcing bracket 15, so that the first connection portion 23, second of the suspended ceiling reinforcing bracket 15 is inserted. The connecting portions 27 are fixed to the connecting T bar 5, the reinforcing T bar 13, and the reinforcing connecting T bar 14, respectively.

さらに、天井面側からビス８を打ち込み、天井パネル４を補強用Ｔバー１３や補強用連結Ｔバー１４に固着する。 Further, screws 8 are driven in from the ceiling surface side, and the ceiling panel 4 is fixed to the reinforcing T bar 13 and the reinforcing connecting T bar 14.

次に、本実施形態の補強ブレース接続用金具３０は、図７から図１１に示すように、略直交配置された一側壁板部３２と他側壁板部３１とを備えて略Ｌ字状に形成された４つの補強ブレース接続用金具片３３から構成されている。 Next, as shown in FIG. 7 to FIG. 11, the reinforcing brace connecting metal fitting 30 of the present embodiment is provided with one side wall plate portion 32 and another side wall plate portion 31 that are arranged substantially orthogonally, and is substantially L-shaped. The four reinforcing brace connecting metal pieces 33 are formed.

また、本実施形態の補強ブレース接続用金具片３３は、一側壁板部３２と他側壁板部３１の接続部分に、一側壁板部３２に直交して他側壁板部３１に沿って延び、さらに直交して延びて他側壁板部３１に繋がる出隅部３４を備えて略Ｌ字状に形成されている。 Further, the reinforcing brace connecting metal piece 33 of the present embodiment extends along the other side wall plate part 31 at a connection portion between the one side wall plate part 32 and the other side wall plate part 31, orthogonal to the one side wall plate part 32, Furthermore, it has a protruding corner portion 34 that extends perpendicularly and is connected to the other side wall plate portion 31, and is formed in a substantially L shape.

そして、Ｔバー１と連結バー５が十字状に配されてなる４つの入隅部３５にそれぞれ、一側壁板部３２をＴバー１に、他側壁板部３１を連結バー５にビス止めするなどして接続して補強ブレース接続用金具片３３を設置する。また、このとき、互いに隣設する補強ブレース接続用金具片３３の一側壁板部３２同士の間、他側壁板部３１同士の間にスペーサ３６が介設される。これにより、略十字状を呈するように補強ブレース接続用金具３０が設置される。
なお、スペーサ３６は補強ブレース接続用金具片３３の一側壁板部３２及び／又は他側壁板部３１に予め一体に設けられていてもよい。 Then, the four side corners 35 in which the T-bar 1 and the connecting bar 5 are arranged in a cross shape are screwed to the T-bar 1 and the other side-wall plate 31 to the connecting bar 5, respectively. For example, the reinforcing brace connecting metal piece 33 is installed. At this time, the spacers 36 are interposed between the one side wall plate portions 32 of the reinforcing brace connecting bracket pieces 33 adjacent to each other and between the other side wall plate portions 31. Thereby, the reinforcing brace connecting metal fitting 30 is installed so as to have a substantially cross shape.
In addition, the spacer 36 may be integrally provided in advance on the one side wall plate portion 32 and / or the other side wall plate portion 31 of the reinforcing brace connecting metal piece 33.

また、本実施形態では、このように４つの補強ブレース接続用金具片３３を設置すると、各補強ブレース接続用金具片３３の一側壁板部３２と他側壁板部３１の接続部分に形成された出隅部３４によってＴバー１と連結バー５の十字状の交差部を囲繞する連通空間が形成される。 Further, in this embodiment, when the four reinforcing brace connecting bracket pieces 33 are installed in this manner, the reinforcing brace connecting bracket pieces 33 are formed at the connecting portions of the one sidewall plate portion 32 and the other sidewall plate portion 31. A communication space that surrounds the cross-shaped intersection of the T bar 1 and the connecting bar 5 is formed by the protruding corner portion 34.

これにより、本実施形態では、この連通空間を通じて、吊りボルト２を接続するための吊り部材接続用金具１１の下端側をＴバー１に接続し、連通空間から上方に突出した吊り部材接続用金具１１の上端側に吊りボルト２の下端部を接続することができる。 Thereby, in this embodiment, the lower end side of the suspension member connection bracket 11 for connecting the suspension bolt 2 is connected to the T-bar 1 through this communication space, and the suspension member connection bracket protruding upward from the communication space. 11 can be connected to the lower end of the suspension bolt 2.

一方、このように補強ブレース接続用金具片３３を設置するとともに、一側壁板部３２とＴバー１に補強ブレース７の下端側を接続する。
なお、補強ブレース接続用金具片３３の他側壁板部３１と連結バー５に補強ブレース７の下端側を接続してもよい。 On the other hand, the reinforcing brace connecting bracket piece 33 is installed as described above, and the lower end side of the reinforcing brace 7 is connected to the one side wall plate portion 32 and the T bar 1.
The lower end side of the reinforcing brace 7 may be connected to the other side wall plate portion 31 and the connecting bar 5 of the reinforcing brace connecting metal piece 33.

上記のように構成した本実施形態の吊り天井用補強金具１５及びこれを備えた吊り天井構造Ｂにおいては、固定金具１６がない補強用Ｔバー１３や補強用連結Ｔバー１４の端部側の連結Ｔバー５、補強用Ｔバー１３や補強用連結Ｔバー１４への接続作業が、吊り天井補強用金具１５を用いることで容易に行える。 In the suspended ceiling reinforcing bracket 15 and the suspended ceiling structure B provided with the same according to the present embodiment configured as described above, the end of the reinforcing T bar 13 or the reinforcing connecting T bar 14 without the fixing bracket 16 is provided. The connection work to the connecting T bar 5, the reinforcing T bar 13, and the reinforcing connecting T bar 14 can be easily performed by using the suspended ceiling reinforcing bracket 15.

また、吊り天井補強用金具１５、固定金具１６で接続して補強ブレース７の下端側接合部Ｓの周囲に補強用Ｔバー１３や補強用連結Ｔバー１４を追加することで、さらに補強ブレース７の下端側接合部Ｓの周囲のビス止め数が増えることで、補強ブレース７の下端側接合部Ｓの周囲の面外剛性が大幅に向上する。 Further, the reinforcing brace 7 is further connected by adding the reinforcing T bar 13 and the reinforcing connecting T bar 14 around the lower end side joint portion S of the reinforcing brace 7 by connecting with the suspended ceiling reinforcing metal 15 and the fixing metal 16. By increasing the number of screws around the lower end side joint S, the out-of-plane rigidity around the lower end side joint S of the reinforcing brace 7 is greatly improved.

また、Ｔバー１と連結バー５が十字状に配されてなる４つの入隅部３５にそれぞれ略Ｌ字状の補強ブレース接続用金具片３３を設置し、略十字状を呈するように補強ブレース接続用金具３０が設置されている。 In addition, reinforcing L brace connecting metal pieces 33 are installed in four corners 35 where the T bar 1 and the connecting bar 5 are arranged in a cross shape. A connection fitting 30 is installed.

このため、地震が発生し、補強ブレース７に軸力が作用して補強ブレース７の下端側を接続した各補強ブレース接続用金具片３３の一側壁板部３２に面外倒れを生じさせる力が作用した場合であっても、この面外倒れを生じさせる力が各補強ブレース接続用金具片３３の他側壁板部３１で受け止められる。 For this reason, an earthquake occurs and an axial force acts on the reinforcing brace 7 to cause a force that causes an out-of-plane tilt on the one side wall plate portion 32 of each reinforcing brace connecting bracket piece 33 that connects the lower end side of the reinforcing brace 7. Even if it acts, the force that causes this out-of-plane tilting is received by the other side wall plate portion 31 of each reinforcing brace connecting metal piece 33.

これにより、従来のように地震時に補強ブレース７に軸力が作用し、補強ブレース７の下端側の接合部Ｓに集中応力が作用した場合であっても、この接合部Ｓに微小に面外倒れの変形が生じることがない。 Thus, even when an axial force acts on the reinforcing brace 7 during an earthquake and a concentrated stress acts on the joint S on the lower end side of the reinforcing brace 7 as in the conventional case, the joint S is slightly out of plane. There will be no deformation of falling.

ここで、図１２のスリップモデルに示すように、従来の吊り天井構造と比較し、本実施形態の吊り天井構造Ｂは、吊り天井用補強金具１５を用いて補強ブレース７の下端側接合部Ｓの周囲に補強用Ｔバー１３や補強用連結Ｔバー１４を追加することで、さらに補強ブレース７の下端側接合部Ｓの周囲のビス止め数が増えることで、また、略十字状を呈するように補強ブレース接続用金具３０を用いることで、補強ブレース７の下端側接合部Ｓの周囲の面外剛性が高く、優れた復元力特性を付与することができることが実証されている。 Here, as shown in the slip model of FIG. 12, the suspended ceiling structure B according to the present embodiment uses the suspended ceiling reinforcing bracket 15 to connect the lower end side joint S of the reinforcing brace 7 as compared with the conventional suspended ceiling structure. By adding the reinforcing T-bar 13 and the reinforcing connecting T-bar 14 to the periphery, the number of screws around the lower end side joint portion S of the reinforcing brace 7 is further increased, and a substantially cross shape is obtained. It has been proved that the use of the reinforcing brace connection fitting 30 has high out-of-plane rigidity around the lower end side joint S of the reinforcing brace 7 and can impart excellent restoring force characteristics.

したがって、まず、本実施形態の吊り天井用補強金具１５及びこれを備えた吊り天井構造Ｂにおいては、固定金具１６がない補強用Ｔバー１３や補強用連結Ｔバー１４を吊り天井補強用金具１５によって容易に連結Ｔバー５、補強用Ｔバー１３や補強用連結Ｔバー１４に接続することができる。 Therefore, first, in the suspended ceiling reinforcing bracket 15 and the suspended ceiling structure B including the same, the reinforcing T bar 13 without the fixing bracket 16 and the reinforcing connection T bar 14 are attached to the suspended ceiling reinforcing bracket 15. Thus, it is possible to easily connect to the connecting T bar 5, the reinforcing T bar 13, and the reinforcing connecting T bar 14.

また、吊り天井補強用金具１５、固定金具１６で接続して補強ブレース７の下端側接合部Ｓの周囲に補強用Ｔバー１３や補強用連結Ｔバー１４を追加することができ、さらに補強ブレース７の下端側接合部Ｓの周囲のビス止め数が増やすことができ、補強ブレース７の下端側接合部Ｓの周囲の面外剛性を大幅に向上させることができる。 Further, a reinforcing T-bar 13 and a reinforcing connecting T-bar 14 can be added around the lower end side joint S of the reinforcing brace 7 by connecting with the suspended ceiling reinforcing metal 15 and the fixing metal 16, and further the reinforcing brace. 7 can be increased, and the out-of-plane rigidity around the lower end side joint S of the reinforcing brace 7 can be greatly improved.

これにより、本実施形態の吊り天井用補強金具１５及びこれを備えた吊り天井構造Ｂによれば、補強ブレース７の下端側接合部Ｓを効果的且つ効率的に補強することができるとともに、復元力特性を大幅に向上させ、優れた耐震性能を付与することが可能になる。 Thus, according to the suspended ceiling reinforcing bracket 15 and the suspended ceiling structure B including the same, the lower end side joint portion S of the reinforcing brace 7 can be effectively and efficiently reinforced and restored. It is possible to greatly improve the force characteristics and provide excellent seismic performance.

よって、地震時に外力が作用し、補強ブレース７の下端側の接合部Ｓに集中応力が作用した場合に、この接合部Ｓに微小に面外倒れの変形が生じることを抑止でき、Ｔバー１の引き抜け（すなわち、Ｔバー１に天井パネル４を固着するビス８の引き抜け）が生じて天井パネル４が落下することを防止できる。 Therefore, when an external force is applied during an earthquake and concentrated stress is applied to the joint S on the lower end side of the reinforcing brace 7, it is possible to prevent the joint S from undergoing a slight out-of-plane deformation, and the T bar 1 Can be prevented from falling out (that is, pulling out of the screw 8 for fixing the ceiling panel 4 to the T-bar 1) and dropping the ceiling panel 4.

さらに、本実施形態の補強ブレース接続用金具３０及びこれを備えた吊り天井構造Ｂにおいては、補強ブレース接続用金具片３３の一側壁板部３２とＴバー１に下端側を接続した補強ブレース７に軸力が作用して、補強ブレース７の下端側の接合部Ｓに面外倒れを生じさせる力が作用した場合であっても、この面外倒れを生じさせる力を各補強ブレース接続用金具片３３の他側壁板部３１で受けることができる。 Furthermore, in the reinforcing brace connecting bracket 30 and the suspended ceiling structure B having the same according to the present embodiment, the reinforcing brace 7 having the lower end connected to the one side wall plate portion 32 and the T bar 1 of the reinforcing brace connecting bracket piece 33. Even if the axial force acts on the joint S on the lower end side of the reinforcing brace 7 and the force causing the out-of-plane toppling acts, the force to cause the out-of-plane toppling is applied to each reinforcing brace connecting bracket. It can be received by the other side wall plate portion 31 of the piece 33.

これにより、地震時に補強ブレース７に軸力が作用し、補強ブレース７の下端側の接合部Ｓに集中応力が作用した場合であっても、この接合部Ｓに微小に面外倒れの変形が生じることを防止できる。 As a result, even when an axial force acts on the reinforcing brace 7 during an earthquake and a concentrated stress acts on the joint S on the lower end side of the reinforcing brace 7, the joint S undergoes a slight out-of-plane deformation. It can be prevented from occurring.

よって、補強ブレース７の下端側の接合部Ｓに面外倒れの変形が生じて、Ｔバー１に引き抜け、すなわち、Ｔバー１に天井パネル４を固着するビスの引き抜けが生じて天井パネル４の落下を招くおそれを確実に解消することが可能になる。 Therefore, the joint S on the lower end side of the reinforcing brace 7 is deformed to fall out of the plane and pulled out to the T bar 1, that is, the screw for fixing the ceiling panel 4 to the T bar 1 is pulled out, and the ceiling panel The possibility of incurring the fall of 4 can be reliably eliminated.

以上、本発明に係る吊り天井用補強金具の一実施形態について説明したが、本発明は上記の一実施形態に限定されるものではなく、その趣旨を逸脱しない範囲で適宜変更可能である。 As mentioned above, although one Embodiment of the reinforcement metal fitting for suspended ceilings concerning this invention was described, this invention is not limited to said one Embodiment, In the range which does not deviate from the meaning, it can change suitably.

例えば、本実施形態では、４本の補強用Ｔバー１３と４本の補強用連結Ｔバー１４を追加してブレース接合部補強構造１２が構成されているものとし、これにより、吊り天井用補強金具１５がＴ字状に形成されているものとしたが、特に補強用Ｔバー１３と補強用連結Ｔバー１４の追加本数を限定する必要はない。そして、これに伴い、吊り天井用補強金具１５は十字状など他の形状で形成してもよい。 For example, in this embodiment, it is assumed that the brace joint reinforcing structure 12 is configured by adding four reinforcing T bars 13 and four reinforcing connecting T bars 14, thereby reinforcing the suspension ceiling. Although the metal fitting 15 is formed in a T shape, it is not necessary to limit the additional number of the reinforcing T bar 13 and the reinforcing connecting T bar 14 in particular. Accordingly, the suspended ceiling reinforcing bracket 15 may be formed in another shape such as a cross shape.

また、本実施形態では、補強ブレース７の下端側の接合部Ｓの周囲を補強するものとして説明を行ったが、本発明に係る吊り天井用補強金具は、補強ブレース７の下端側の接合部Ｓの周囲に限らず、吊り天井構造Ｂの所望の箇所を補強する際に用いても勿論構わない。 Moreover, although this embodiment demonstrated as what reinforces the circumference | surroundings of the junction part S by the side of the lower end of the reinforcement brace 7, the reinforcement metal fitting for suspended ceiling which concerns on this invention is a junction part by the side of the lower end of the reinforcement brace 7 Of course, it may be used when reinforcing a desired portion of the suspended ceiling structure B, not limited to the periphery of S.

さらに、本実施形態では、補強ブレース接続用金具３０を用いてＶ型を呈するように一方向Ｔ１に並設された一対の補強ブレース７を天井下地に接続するように図示、説明を行った。
これに対し、レ型を呈するように配設された１本の補強ブレース７を接続する場合、また、一方向Ｔ１及び他方向Ｔ２にそれぞれ一対の補強ブレース７を並設し、平面視で十字状を呈するように配設した４本の補強ブレース７を接続する場合においても、勿論、補強ブレース接続用金具３０を用いることができる。そして、これらの場合においても、本実施形態と同様に面外変形を抑えることが可能である。 Further, in the present embodiment, the pair of reinforcing braces 7 arranged in parallel in one direction T1 so as to have a V shape using the reinforcing brace connecting metal fitting 30 is illustrated and described.
On the other hand, when connecting one reinforcing brace 7 arranged so as to exhibit a reticular shape, a pair of reinforcing braces 7 are juxtaposed in one direction T1 and the other direction T2, respectively. In the case of connecting the four reinforcing braces 7 arranged so as to exhibit a shape, the reinforcing brace connecting metal fitting 30 can be used as a matter of course. In these cases, out-of-plane deformation can be suppressed as in the present embodiment.

１Ｔバー（主鋼材）
２吊りボルト（吊り部材）
３天井部
４天井パネル
５連結Ｔバー（連結鋼材）
６天井下地
７補強ブレース
８ビス
１０従来の補強ブレース接続用金具
１１吊り部材接続用金具
１２ブレース接合部補強構造
１３補強用Ｔバー（補強用主鋼材）
１４補強用連結Ｔバー（補強用連結鋼材）
１５吊り天井補強用金具
１６固定金具
１７接続用孔
２０側板部
２１側板部
２２天板部
２３第１接続部
２４側板部
２５側板部
２６天板部
２７第２接続部
２８挿通孔
３０補強ブレース接続用金具
３１他側壁板部
３２一側壁板部
３３補強ブレース接続用金具片
３４出隅部
３５入隅部
３６スペーサ
Ａ従来の吊り天井構造
Ｂ吊り天井構造
Ｓ補強ブレースの下端側の接合部
Ｔ１一方向
Ｔ２他方向
Ｔ３上下方向 1 T bar (main steel)
2 Suspension bolt (suspending member)
3 Ceiling part 4 Ceiling panel 5 Connection T bar (connection steel)
6 Ceiling base 7 Reinforcement brace 8 Screw 10 Conventional reinforcement brace connection bracket 11 Hanging member connection bracket 12 Brace joint reinforcement structure 13 T bar for reinforcement (main steel for reinforcement)
14 Reinforced connection T-bar (Reinforced connection steel)
DESCRIPTION OF SYMBOLS 15 Suspension ceiling reinforcement metal fitting 16 Fixing metal fitting 17 Connection hole 20 Side plate part 21 Side plate part 22 Top plate part 23 First connection part 24 Side plate part 25 Side plate part 26 Top plate part 27 Second connection part 28 Insertion hole 30 Reinforcement brace connection Metal fitting 31 Other side wall plate portion 32 One side wall plate portion 33 Reinforcing brace connecting metal piece 34 Outlet corner portion 35 Incoming corner portion 36 Spacer A Conventional suspended ceiling structure B Suspended ceiling structure S Joint T1 on the lower end side of the reinforcing brace Direction T2 Other direction T3 Vertical direction

Claims

水平の一方向に延設される主鋼材及び他方向に延設される連結鋼材を格子状に組み付けてなる天井下地と、前記天井下地に下端側を接合して配設された補強ブレースとを備えた吊り天井構造において、
前記補強ブレースの下端側の接合部の周囲にブレース接合部補強構造が設けられ、
前記ブレース接合部補強構造が、前記一方向に沿って延設される補強用主鋼材と、前記他方向に沿って延設される補強用連結鋼材と、互いに直交配置される前記補強用主鋼材、前記補強用連結鋼材、前記主鋼材、前記連結鋼材のうちの２つの鋼材を接続して保持する吊り天井補強用金具とを備えて構成されていることを特徴とする吊り天井構造。 A ceiling base formed by assembling a main steel material extending in one horizontal direction and a connecting steel material extending in the other direction in a lattice shape, and a reinforcing brace arranged by joining the lower end side to the ceiling base In the suspended ceiling structure provided,
A brace joint reinforcement structure is provided around the joint on the lower end side of the reinforcing brace,
The brace joint reinforcement structure includes a reinforcing main steel material extending along the one direction, a reinforcing connecting steel material extending along the other direction, and the reinforcing main steel material arranged orthogonal to each other. A suspended ceiling structure comprising: a reinforcing connecting steel material, a main steel material, and a suspended ceiling reinforcing metal fitting for connecting and holding two steel materials of the connecting steel materials.

水平の一方向に延設される主鋼材及び他方向に延設される連結鋼材を格子状に組み付けてなる天井下地と、補強ブレース接続用金具を用いて前記天井下地に下端側を接合して配設された補強ブレースとを備えた吊り天井構造において、
前記補強ブレース接続用金具が、略直交配置された一側壁板部と他側壁板部とを備えて略Ｌ字状に形成された４つの補強ブレース接続用金具片を備え、
前記主鋼材と前記連結鋼材が十字状に配されてなる４つの入隅部にそれぞれ、前記一側壁板部を前記主鋼材に、前記他側壁板部を前記連結鋼材に接続して前記補強ブレース接続用金具片を設置するとともに、前記一側壁板部と前記主鋼材に、及び／又は前記他側壁板部と前記連結鋼材に前記補強ブレースの下端側を接続するように構成されていることを特徴とする吊り天井構造。 A ceiling base formed by assembling a main steel material extending in one horizontal direction and a connecting steel material extending in the other direction in a lattice shape, and joining the lower end side to the ceiling base using a reinforcing brace connection fitting In suspended ceiling structure with reinforced braces arranged,
The reinforcing brace connecting bracket includes four reinforcing brace connecting bracket pieces formed in a substantially L shape with one sidewall plate portion and another sidewall plate portion arranged substantially orthogonally;
The reinforcing brace is formed by connecting the one side wall plate portion to the main steel material and the other side wall plate portion to the connection steel material at four corners formed by arranging the main steel material and the connecting steel material in a cross shape. It is configured to connect the lower end side of the reinforcing brace to the one side wall plate portion and the main steel material and / or to the other side wall plate portion and the connecting steel material while installing the connecting metal piece. Characteristic suspended ceiling structure.

水平の一方向に延設される主鋼材及び他方向に延設される連結鋼材を格子状に組み付けてなる天井下地と、前記天井下地に下端側を接合して配設された補強ブレースとを備えた吊り天井構造において、
請求項１記載のブレース接合部補強構造と、請求項２記載の補強ブレース接続用金具とを備えて構成されていることを特徴とする吊り天井構造。 A ceiling base formed by assembling a main steel material extending in one horizontal direction and a connecting steel material extending in the other direction in a lattice shape, and a reinforcing brace arranged by joining the lower end side to the ceiling base In the suspended ceiling structure provided,
A suspended ceiling structure comprising the brace joint reinforcing structure according to claim 1 and the reinforcing brace connecting metal fitting according to claim 2.