JP4691201B1 - Building reinforcement structure - Google Patents

Building reinforcement structure Download PDF

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JP4691201B1
JP4691201B1 JP2010208118A JP2010208118A JP4691201B1 JP 4691201 B1 JP4691201 B1 JP 4691201B1 JP 2010208118 A JP2010208118 A JP 2010208118A JP 2010208118 A JP2010208118 A JP 2010208118A JP 4691201 B1 JP4691201 B1 JP 4691201B1
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floor
ceiling
opening
reinforcing
beams
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JP2012062698A (en
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幸一郎 吉村
臣利 羽田
健浩 竹中
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Sekisui Chemical Co Ltd
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Abstract

【課題】改装時に開口部を設けるときでも容易に実施することが可能な建物の補強構造を提供する。
【解決手段】ユニット建物１０の２階を構成する建物ユニット１Ａの天井部１９の一部を切断して開口部１９０を形成した際に、開口部又はその周辺に補強天井根太６を設ける。
また、建物ユニット１Ａの床部１７の一部を切断して開口部１７９を形成した際に、開口部又はその周辺に位置する床小梁１７２に対して、桁方向に向けた床補強小梁３Ａを、床小梁１７２と妻側床梁１３との間に差し渡す。
さらに、１階の建物ユニット１Ｂの床部の一部を切断して開口部１７０Ａを形成した際に、桁方向に向けた床補強小梁２Ａ，２Ｂを、床小梁１７２と妻側床梁１３との間及び床小梁１７２，１７２間に差し渡す。
【選択図】図１To provide a reinforcing structure for a building which can be easily implemented even when an opening is provided at the time of renovation.
When a part of a ceiling portion 19 of a building unit 1A constituting the second floor of a unit building 10 is cut to form an opening 190, a reinforced ceiling joist 6 is provided at or around the opening.
In addition, when a part of the floor portion 17 of the building unit 1A is cut to form the opening 179, the floor reinforcing beam is directed to the girder direction with respect to the floor beam 172 located at or around the opening 3A is passed between the floor beam 172 and the wife side floor beam 13.
Furthermore, when a part of the floor of the building unit 1B on the first floor is cut to form the opening 170A, the floor reinforcing beam 2A, 2B facing the beam direction is replaced with the floor beam 172 and the wife side floor beam. 13 and between floor beams 172, 172.
[Selection] Figure 1

Description

本発明は、梁材と柱材とによって骨組構造体が形成される建物に、鉛直方向に開放される開口部を設ける際の建物の補強構造に関するものである。   The present invention relates to a reinforcing structure for a building when an opening that is opened in a vertical direction is provided in a building in which a frame structure is formed by beams and pillars.

従来、建物としてのユニット建物に吹き抜け空間等の開口部を形成するために、開口部の周辺に位置する床梁や天井梁に、補強部材（スチフナー）を溶接接合又はボルト接合するユニット建物の補強構造が知られている（例えば、特許文献１，２等を参照）。   Conventionally, in order to form an opening, such as an atrium, in a unit building as a building, reinforcement of a unit building in which a reinforcing member (stiffener) is welded or bolted to a floor beam or a ceiling beam located around the opening. The structure is known (see, for example, Patent Documents 1 and 2).

この特許文献１，２に開示された開口部の補強は、ユニット建物を新築する際におこなわれるものであって、工場において建物ユニットを組み立てる工程の中でおこなわれるため、溶接による接合が可能であるうえに、ボルト接合の場合も取付箇所の制約をほとんど受けることがなく、任意の箇所でおこなうことができる。   The reinforcement of the opening disclosed in Patent Documents 1 and 2 is performed when a unit building is newly constructed, and since it is performed in the process of assembling the building unit at the factory, joining by welding is possible. In addition, in the case of bolt joining, there is almost no restriction on the mounting location, and it can be performed at any location.

他方、改装時に既存のユニット建物の床や天井を開口して収納庫を設けたり、下階から上階にわたる吹き抜け空間を設けたり、エレベータを設置したりする場合があるが、開口部を設けるために天井根太や床小梁や床根太が切断されたり切り欠かれたりすると、既存のユニット建物に比べて強度が低下することになるので、開口部又はその周辺を補強する必要がある。   On the other hand, when renovating, there are cases where the floor or ceiling of an existing unit building is opened to provide a storage, a ventilated space from the lower floor to the upper floor, or an elevator may be installed, but in order to provide an opening If the ceiling joists, floor beams and floor joists are cut or notched, the strength will be lower than that of an existing unit building, so it is necessary to reinforce the opening or its periphery.

特開２００８−２９１４８９号公報JP 2008-291489 A 特開２００２−５４２３７号公報JP 2002-54237 A

しかしながら、特許文献１，２に開示されているような溶接接合を使った補強は、既存の建物の中で火器を使用することになるため、火災の危険を考えると実施しにくい。   However, reinforcement using a welded joint as disclosed in Patent Documents 1 and 2 uses a firearm in an existing building and is difficult to implement in view of the risk of fire.

また、補強部材を梁のフランジにボルト接合で接合しようとすると、上下階で重なり合う梁などが邪魔となり、ボルト孔の穿孔やドリルねじの螺入ができない箇所があるため、新築時と同じように補強することができない。   Also, if you try to join the reinforcing member to the flange of the beam by bolting, the beams that overlap on the upper and lower floors will be in the way, and there are places where you can not drill bolt holes or screw drill screws. It cannot be reinforced.

そこで、本発明は、改装時に開口部を設けるときでも容易に実施することが可能な建物の補強構造を提供することを目的としている。   Accordingly, an object of the present invention is to provide a reinforcing structure for a building that can be easily implemented even when an opening is provided during refurbishment.

前記目的を達成するために、本発明の建物の補強構造は、梁材と柱材とによって形成される骨組構造体を複数、備えた建物の補強構造であって、前記骨組構造体の上縁は、第１方向に向けて略平行に配置される一対の第１天井梁と、前記第１方向に略直交する第２方向に向けて略平行に配置される一対の第２天井梁とによって形成されるとともに、前記第１天井梁間には、前記第２方向に向けた天井根太が前記第１方向に間隔を置いて複数、差し渡されており、前記骨組構造体の下縁は、前記第１方向に向けて略平行に配置される一対の第１床梁と、前記第２方向に向けて略平行に配置される一対の第２床梁とによって形成されるとともに、前記第１床梁間には、前記第２方向に向けた床小梁が前記第１方向に間隔を置いて複数、差し渡されており、少なくとも一つの前記骨組構造体の天井部の一部を切断して第１開口部を形成した際に、前記第１開口部又はその周辺に補強天井根太を設け、少なくとも一つの前記骨組構造体の床部の一部を切断して第２開口部を形成した際に、前記第２開口部又はその周辺に位置する前記床小梁に対して、前記第１方向に向けた床補強小梁を、前記床小梁と前記第２床梁との間又は前記床小梁間に差し渡し、前記床補強小梁の両端をそれぞれ側方から挿入される締結部材によって固定させることを特徴とする。   In order to achieve the above object, a reinforcing structure for a building according to the present invention is a reinforcing structure for a building including a plurality of frame structures formed by beams and columns, and the upper edge of the frame structure. Is a pair of first ceiling beams disposed substantially parallel to the first direction and a pair of second ceiling beams disposed substantially parallel to the second direction substantially orthogonal to the first direction. And a plurality of ceiling joists facing in the second direction are provided between the first ceiling beams at intervals in the first direction, and the lower edge of the framework structure is The first floor is formed by a pair of first floor beams arranged substantially parallel to the first direction and a pair of second floor beams arranged substantially parallel to the second direction. Between the beams, a plurality of floor beams directed in the second direction are passed at intervals in the first direction. When the first opening is formed by cutting a part of the ceiling of at least one of the frame structures, a reinforcing ceiling joist is provided at or around the first opening, and at least one of the frame structures When a part of the floor of the body is cut to form the second opening, the floor reinforcement small in the first direction with respect to the second beam located at or around the second opening. A beam is passed between the floor beam and the second floor beam or between the floor beam, and both ends of the floor reinforcing beam are fixed by fastening members inserted from the sides.

ここで、前記第１開口部と前記第２開口部は、鉛直方向に投影した際に重なる位置に形成されていてもよい。また、前記補強天井根太は、前記第１開口部又はその周辺の下面の位置を既存の天井根太の下面の位置より上方に上げる上げ越し処理が施されている構成とすることができる。   Here, the first opening and the second opening may be formed at positions that overlap when projected in the vertical direction. Further, the reinforcing ceiling joist can be configured to be subjected to a lifting process in which the position of the lower surface of the first opening or its periphery is raised above the position of the lower surface of the existing ceiling joist.

さらに、前記床補強小梁の端部には、軸直交方向に張り出された張出部を有する取付部が設けられており、前記張出部に装着される締結部材によって前記第２床梁又は前記床小梁と前記床補強小梁とが連結される構成とすることができる。   Furthermore, an attachment portion having an overhanging portion projecting in the direction perpendicular to the axis is provided at an end of the floor reinforcing beam, and the second floor beam is formed by a fastening member attached to the overhanging portion. Or it can be set as the structure by which the said floor beam and the said floor reinforcement beam are connected.

また、前記床補強小梁は、少なくとも１本の床小梁を下方から支持するとともに、それとは別の前記床小梁と前記第２床梁との間に差し渡される構成であってもよい。   The floor reinforcing beam may be configured to support at least one floor beam from below and to be passed between another floor beam and the second floor beam. .

また、前記第１開口部若しくは前記第２開口部又はそれらの周辺に位置する前記第１天井梁、前記第２天井梁、前記第１床梁又は前記第２床梁の少なくとも一つは、天井内部側又は床内部側が開放されるように凹部が向けられた溝形鋼又はリップ付き溝形鋼によって形成されており、その凹部の開放側に前記第１天井梁、前記第２天井梁、前記第１床梁又は前記第２床梁に沿って補強梁が配置され、前記凹部を形成するウエブと前記補強梁とが、前記補強梁を取り付けるための固定片が形成された曲げ板状の連結部材と締結部材とによって連結される構成とすることができる。さらに、前記補強梁は、前記凹部の開放側に、凹部の開放側を向かい合わせにした溝形鋼又はリップ付き溝形鋼であってもよい。   In addition, at least one of the first ceiling beam, the second opening beam, the second ceiling beam, the first floor beam, or the second floor beam located at or around the first opening or the second opening is a ceiling. It is made of groove steel or grooved steel with a lip so that the inner side or the floor inner side is opened, and the first ceiling beam, the second ceiling beam, A reinforcing plate is arranged along the first floor beam or the second floor beam, and the web forming the recess and the reinforcing beam are connected in a bent plate shape in which a fixing piece for attaching the reinforcing beam is formed. It can be set as the structure connected with a member and a fastening member. Further, the reinforcing beam may be a grooved steel or a grooved steel with a lip with the open side of the recess facing the open side of the recess.

このように構成された本発明の建物の補強構造は、第１開口部又はその周辺に補強天井根太を設ける。また、第２開口部又はその周辺に位置する床小梁を、床小梁と第２床梁との間又は床小梁間に差し渡された床補強小梁によって補強する。さらに、床小梁と第２床梁との間に床補強小梁を介在させることで、第２床梁の横補剛剛性も向上する。そして、床補強小梁の両端は、それぞれ側方から挿入される締結部材によって固定される。   In the reinforcing structure for a building according to the present invention configured as described above, a reinforcing ceiling joist is provided in the first opening or its periphery. In addition, the floor beam located in the second opening or the vicinity thereof is reinforced by the floor reinforcing beam that is inserted between the floor beam and the second floor beam or between the floor beams. Further, by interposing the floor reinforcing beam between the floor beam and the second floor beam, the lateral stiffening rigidity of the second floor beam is also improved. Then, both ends of the floor reinforcing beam are fixed by fastening members inserted from the sides.

このため、既存の建物に床部と天井部とを貫通させる開口部を設ける際にも、補強天井根太を設けて補強することによって天井梁に必要な横補剛剛性を充分に確保することができるうえに、開口部から床補強小梁の固定をおこなうことができるので、容易に建物を補強することができる。   For this reason, even when providing an opening that penetrates the floor and ceiling in an existing building, it is possible to sufficiently secure the lateral stiffening rigidity necessary for the ceiling beam by providing a reinforcing ceiling joist to reinforce it. In addition, since the floor reinforcing beam can be fixed from the opening, the building can be easily reinforced.

また、床部と天井部に投影位置が重なって貫通する開口部を設けることができれば、エレベータの設置や吹き抜け空間の構築を容易におこなうことができる。   Moreover, if the opening part which a projection position overlaps and penetrates a floor part and a ceiling part can be provided, installation of an elevator and construction of a blow-off space can be performed easily.

さらに、第２開口部又はその周辺の第２床梁や床小梁に対して床補強小梁による支持点を加えることで、床根太や床小梁の切断による支持点の減少を補うことができるうえに、新たに鉛直荷重が追加される場合であっても、充分に耐力を確保することができる。   Furthermore, by adding a support point by a floor reinforcing beam to the second floor beam or floor beam around the second opening, it is possible to compensate for the decrease in the support point due to cutting of the floor joists or floor beam. In addition, even when a vertical load is newly added, sufficient proof strength can be secured.

また、第２開口部を形成する際に床小梁や床根太などの横補剛効果部材が取り除かれても、床補強小梁を差し渡すことによって水平方向の剛性を充分に確保することができる。   Further, even when the lateral stiffening effect member such as the floor beam or floor joist is removed when forming the second opening, the horizontal rigidity can be sufficiently secured by passing the floor reinforcing beam. it can.

さらに、第１開口部又はその周辺に位置する補強天井根太の下面を既存の天井根太の下面の位置より上方に上げる上げ越し処理を施すことによって、開口部に新たに配置するエレベータの資機材や部材などと干渉する天井根太の一部を取り除くことができ、目的に合った開口部を構築することができる。   Furthermore, by performing an over-raising process that raises the lower surface of the reinforced ceiling joists located at or around the first opening above the position of the lower surface of the existing ceiling joists, A part of the ceiling joist that interferes with a member or the like can be removed, and an opening suitable for the purpose can be constructed.

また、床補強小梁の端部に軸直交方向に張り出された張出部を設けることで、容易に締結部材の装着箇所を確保することができる。ここで、床補強小梁によって床小梁を下方から支持させる構成にすることで、第２開口部周辺の床のたわみや床鳴りなどの発生を抑えることができる。特に、第２開口部を形成する際に床小梁が切断された場合は、床小梁の一端と第１床梁との連結が解除されて床小梁がたわみ易くなるが、床補強小梁によって切断された床小梁の端部を下方から支持させることで、第２開口部周辺の強度の低下を防ぐことができる。   Moreover, the installation location of a fastening member is easily securable by providing the overhang | projection part projected in the direction orthogonal to an axis at the edge part of a floor reinforcement beam. Here, by adopting a configuration in which the floor beam is supported from below by the floor reinforcing beam, it is possible to suppress the occurrence of floor deflection and floor noise around the second opening. In particular, when the floor beam is cut when forming the second opening, the connection between one end of the floor beam and the first floor beam is released and the floor beam is easily bent. By supporting the end portion of the floor beam cut by the beam from below, it is possible to prevent a decrease in strength around the second opening.

また、第１開口部若しくは第２開口部又はそれらの周辺に位置する天井梁又は床梁の長手方向に沿って補強梁を配置し、天井梁又は床梁のウエブと補強梁とを固定片が形成された曲げ板状の連結部材と締結部材とによって連結させることで、さらに開口部を補強することができる。   Further, the reinforcing beam is arranged along the longitudinal direction of the first opening or the second opening or the ceiling beam or the floor beam located around the first opening, the web of the ceiling beam or the floor beam and the reinforcing beam are fixed pieces. The opening can be further reinforced by connecting the formed bent plate-like connecting member and the fastening member.

さらに、このような構成であれば、改装時に天井梁や床梁への補強梁の取り付けを開口部から容易におこなうことができる。また、補強梁を天井梁や床梁に沿って配置することで、天井梁や床梁の強軸方向の許容曲げ応力度を低下させることなく、弱軸方向の強度を高めることができる。すなわち、補強梁の配置によって天井梁や床梁の横補剛剛性が高められるので、建物の耐力を落とすことなく吹き抜け空間を設けることができる。   Further, with such a configuration, it is possible to easily attach the reinforcing beam to the ceiling beam or the floor beam from the opening during renovation. Further, by arranging the reinforcing beam along the ceiling beam or the floor beam, the strength in the weak axis direction can be increased without reducing the allowable bending stress degree in the strong axis direction of the ceiling beam or the floor beam. That is, since the lateral stiffening rigidity of the ceiling beam and the floor beam is enhanced by the arrangement of the reinforcing beams, it is possible to provide an atrium space without reducing the strength of the building.

また、補強梁を、天井梁又は床梁の凹部の開放側に凹部の開放側を向かい合わせにした溝形鋼又はリップ付き溝形鋼によって形成した場合は、既存の建物に下階から上階にわたる吹き抜け空間を設けるなどの改装時において、補強梁にフランジを設けた分、板状の補強梁を使用した場合に比べて水平方向の剛性を高めることができる。さらに、補強梁のフランジが天井梁側又は床梁側を向いているので、開口部への突出量を最小限に抑えることができ、内壁材などを取り付ける際にも邪魔になることがない。   In addition, when the reinforcing beam is formed of grooved steel with the open side of the concave part facing the open side of the concave part of the ceiling beam or floor beam, or the grooved steel with a lip, the existing building has the lower floor to the upper floor. At the time of refurbishment such as providing a wide space, it is possible to increase the rigidity in the horizontal direction as compared with the case where a plate-like reinforcing beam is used because the reinforcing beam is provided with a flange. Furthermore, since the flange of the reinforcing beam faces the ceiling beam side or the floor beam side, the amount of protrusion to the opening can be minimized, and there is no hindrance when attaching the inner wall material or the like.

本発明の実施の形態のユニット建物の補強構造の構成を説明する斜視図である。It is a perspective view explaining the structure of the reinforcement structure of the unit building of embodiment of this invention. 建物ユニットの構成を説明する斜視図である。It is a perspective view explaining the structure of a building unit. 実施例１の天井部の補強構造の構成を説明する断面図である。It is sectional drawing explaining the structure of the reinforcement structure of the ceiling part of Example 1. FIG. 天井根太の構成を説明する断面図である。It is sectional drawing explaining the structure of a ceiling joist. 実施例１の天井部の補強構造の構成を説明する斜視図である。It is a perspective view explaining the structure of the reinforcement structure of the ceiling part of Example 1. FIG. 実施例１の別の天井部の補強構造の構成を説明する断面図である。FIG. 6 is a cross-sectional view illustrating a configuration of another ceiling portion reinforcing structure according to the first embodiment. 図６のＡ−Ａ矢視方向で見た断面図である。It is sectional drawing seen in the AA arrow direction of FIG. 実施例２の床部の補強構造の構成を説明する斜視図である。It is a perspective view explaining the structure of the reinforcement structure of the floor part of Example 2. FIG. 実施例２の床部の補強構造の構成を説明する断面図である。It is sectional drawing explaining the structure of the reinforcement structure of the floor part of Example 2. FIG. （ａ）は図９のＢ−Ｂ矢視方向で見た断面図、（ｂ）は図９のＣ−Ｃ矢視方向で見た断面図、（ｃ）は図９のＤ−Ｄ矢視方向で見た断面図である。(A) is a cross-sectional view seen in the direction of arrows BB in FIG. 9, (b) is a cross-sectional view seen in the direction of arrows CC in FIG. 9, and (c) is a view in the direction of arrows DD in FIG. It is sectional drawing seen in the direction. 実施例２の別の床部の補強構造の構成を説明する斜視図である。It is a perspective view explaining the structure of the reinforcement structure of another floor part of Example 2. FIG. 図１１で示した床部の補強構造の構成を説明する断面図である。It is sectional drawing explaining the structure of the reinforcement structure of the floor part shown in FIG. （ａ）は図１２のＥ−Ｅ矢視方向で見た断面図、（ｂ）は図１２のＦ−Ｆ矢視方向で見た断面図である。(A) is sectional drawing seen in the EE arrow direction of FIG. 12, (b) is sectional drawing seen in the FF arrow direction of FIG. 実施例３のユニット建物の補強構造の構成を説明する斜視図である。It is a perspective view explaining the structure of the reinforcement structure of the unit building of Example 3. FIG. 実施例３のユニット建物の補強構造の構成を説明する平面図である。It is a top view explaining the structure of the reinforcement structure of the unit building of Example 3. FIG. 実施例３の床梁と補強梁の取付構造を説明する断面図である。It is sectional drawing explaining the attachment structure of the floor beam of Example 3, and a reinforcement beam. 図１６のＧ−Ｇ矢視方向で見た断面図である。It is sectional drawing seen in the GG arrow direction of FIG. 実施例３の天井梁と補強梁の取付構造を説明する断面図である。It is sectional drawing explaining the attachment structure of the ceiling beam and reinforcement beam of Example 3. FIG. 実施例３の天井梁と補強梁の取付構造を説明する正面図である。It is a front view explaining the attachment structure of the ceiling beam and reinforcement beam of Example 3.

以下、本発明の実施の形態について図面を参照して説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は、本実施の形態の建物としてのユニット建物１０の補強構造の構成を説明する斜視図である。ここで、ユニット建物１０は、図２に示すような建物ユニット１を現場で複数、隣接して設置することによって構築される。   FIG. 1 is a perspective view illustrating a configuration of a reinforcing structure of a unit building 10 as a building according to the present embodiment. Here, the unit building 10 is constructed by installing a plurality of building units 1 adjacent to each other as shown in FIG.

この建物ユニット１は、図２に示すように、隅角部に配置される柱材としての柱１１，・・・と、柱１１，・・・の下端間に架け渡される梁材としての床梁（１２，１３）と、柱１１，・・・の上端間に架け渡される梁材としての天井梁（１５，１６）とによってボックス形のラーメン構造体（骨組構造体）に形成される。   As shown in FIG. 2, the building unit 1 includes a pillar 11,... As a pillar disposed at a corner, and a floor, a beam, spanned between the lower ends of the pillars 11,. A box-shaped frame structure (frame structure) is formed by the beams (12, 13) and the ceiling beams (15, 16) as beam members spanned between the upper ends of the columns 11,.

この建物ユニット１は、平面視矩形に形成されており、長辺側（桁側）の床梁を桁側床梁１２（第１床梁）とし、短辺側（妻側）の床梁を妻側床梁１３（第２床梁）とする。また、長辺側の天井梁を桁側天井梁１５とし、短辺側の天井梁を妻側天井梁１６とする。   This building unit 1 is formed in a rectangular shape in plan view. The floor beam on the long side (girder side) is used as the girder side floor beam 12 (first floor beam), and the floor beam on the short side (wife side) is used. The wife side floor beam 13 (second floor beam) is used. Further, the ceiling beam on the long side is referred to as the girder side ceiling beam 15, and the ceiling beam on the short side is referred to as the wife side ceiling beam 16.

ここで、桁側床梁１２、妻側床梁１３、桁側天井梁１５及び妻側天井梁１６は、溝形鋼又はリップ付き溝形鋼によって成形される。本実施の形態では、図１の桁側天井梁１５で図示されているように、平行な上下のフランジ１５２，１５２間がウエブ１５１によって連結された断面視略コ字形の溝形鋼を使用する場合について説明する。   Here, the girder-side floor beam 12, the end-side floor beam 13, the girder-side ceiling beam 15, and the end-side ceiling beam 16 are formed of channel steel or channel steel with a lip. In the present embodiment, as shown by the girder-side ceiling beam 15 in FIG. 1, a substantially U-shaped channel steel in which the upper and lower flanges 152, 152 are connected by a web 151 is used. The case will be described.

この溝形鋼（桁側天井梁１５など）は、図１から明らかなように、フランジ１５２，１５２及びウエブ１５１によって形成される凹部の開放側が天井内部側（開口部１９０側）に向けられている。   As is apparent from FIG. 1, the grooved steel (girder-side ceiling beam 15 or the like) is such that the open side of the recess formed by the flanges 152, 152 and the web 151 is directed to the ceiling inner side (opening 190 side). Yes.

また、図２に示すように、桁側床梁１２，１２間には長辺方向（第１方向又は桁方向ともいう。）に間隔を置いて複数の床小梁１７２，・・・が差し渡される。すなわち、この床小梁１７２は、妻側床梁１３と同じく短辺方向（第２方向又は妻方向ともいう。）に向いて略平行に配置される。   Further, as shown in FIG. 2, a plurality of floor beams 172,... Are inserted between the beam-side floor beams 12 and 12 at intervals in the long side direction (also referred to as the first direction or the beam direction). Passed. That is, the floor beam 172 is arranged substantially parallel to the short side direction (also referred to as the second direction or the wife direction), similarly to the wife side floor beam 13.

この床小梁１７２は、四角筒状の角形鋼管によって成形される。また、床小梁１７２の両端には、断面視コ字形の取付金具１７５（図８参照）が接合されており、その取付金具１７５は桁側床梁１２に溶接によって接合される。   The floor beam 172 is formed by a rectangular tubular steel pipe. Further, a mounting bracket 175 (see FIG. 8) having a U-shaped cross section is joined to both ends of the floor beam 172, and the mounting bracket 175 is joined to the girder-side floor beam 12 by welding.

さらに、床小梁１７２，・・・上には妻側床梁１３，１３間に複数の木製の床根太１７３，・・・が差し渡され、その上には床材１７１が貼り付けられる。すなわち、床部１７は、桁側床梁１２，１２間に差し渡された複数の床小梁１７２，・・・と、床小梁１７２，・・・上において妻側床梁１３，１３間に差し渡される複数の床根太１７３，・・・と、面状の床材１７１とによって主に構成される。   Further, a plurality of wooden floor joists 173,... Are passed between the wife side floor beams 13, 13 on the floor beam 172,. That is, the floor portion 17 includes a plurality of floor beams 172,... Passed between the girder floor beams 12, 12, and the floor beams 172,. Are mainly composed of a plurality of floor joists 173,...

一方、桁側天井梁１５，１５間には、短辺方向に向けた複数の木製の天井根太１９２，・・・が架け渡され、それらの天井根太１９２，・・・の下面に天井材１９１が取り付けられることによって天井部１９が形成される。また、柱１１，１１間には壁部１８が設けられる。   On the other hand, a plurality of wooden ceiling joists 192,... Extending in the short side direction are bridged between the girder-side ceiling beams 15, 15, and the ceiling material 191 is provided on the lower surface of the ceiling joists 192,. Is attached to form the ceiling portion 19. A wall portion 18 is provided between the columns 11 and 11.

さらに、図２に示すように、柱１１と桁側床梁１２又は妻側床梁１３との接合部には、断面視略コ字形の接合枠材１４が配置される。すなわち、柱１１の側面に接合枠材１４の端面が当接されて溶接によって接合がおこなわれ、接合枠材１４に対して桁側床梁１２又は妻側床梁１３が溶接によって接合される。この接合枠材１４は、柱１１と桁側天井梁１５又は妻側天井梁１６との接合にも使用される。   Further, as shown in FIG. 2, a joint frame member 14 having a substantially U-shaped cross-sectional view is disposed at a joint portion between the column 11 and the girder side floor beam 12 or the wife side floor beam 13. That is, the end face of the joining frame member 14 is brought into contact with the side surface of the column 11 and is joined by welding, and the girder-side floor beam 12 or the wife-side floor beam 13 is joined to the joining frame member 14 by welding. The joining frame member 14 is also used for joining the column 11 and the girder-side ceiling beam 15 or the wife-side ceiling beam 16.

そして、ユニット建物１０を改装する際に、階段、エレベータ、エントランスやリビング等に設けられる吹き抜け空間などを構築する場合がある。図１は、ユニット建物１０にエレベータを設置するために、鉛直方向に投影した際に重なる位置に複数の開口部１９０，１７９，１７０Ａを設けた構成を示している。   And when renovating the unit building 10, there may be a case where a staircase, an elevator, an atrium space provided in an entrance, a living room, or the like is constructed. FIG. 1 shows a configuration in which a plurality of openings 190, 179, 170A are provided at positions overlapping when projected in the vertical direction in order to install an elevator in the unit building 10.

すなわち、２階の建物ユニット１Ａの天井部１９には開口部１９０を設け、実施例１で説明する補強天井根太６，・・・を配置する。また、２階の建物ユニット１Ａの床部１７と１階の建物ユニット１Ｂの天井部１９を貫通させた開口部１７９を設ける。さらに、１階の建物ユニット１Ｂの床部１７には開口部１７０Ａを設け、エレベータの資機材などの荷重を支持させるために実施例２で説明する床補強小梁２Ａ，２Ｂを配置する。   That is, an opening 190 is provided in the ceiling 19 of the building unit 1A on the second floor, and the reinforcing ceiling joists 6,... Described in the first embodiment are arranged. Moreover, the opening part 179 which penetrated the floor part 17 of the building unit 1A on the second floor and the ceiling part 19 of the building unit 1B on the first floor is provided. Further, an opening 170A is provided in the floor 17 of the building unit 1B on the first floor, and floor reinforcing beams 2A and 2B described in the second embodiment are arranged to support loads such as elevator materials and equipment.

以下、実施例において開口部の補強構造について説明する。   Hereinafter, the reinforcement structure of an opening part is demonstrated in an Example.

以下、実施例１では、図３−７を参照しながら天井部１９に設ける第１開口部としての開口部１９０の構成について説明する。なお、前記実施の形態で説明した内容と同一乃至均等な部分の説明については同一符号を付して説明する。   Hereinafter, in Example 1, the structure of the opening part 190 as a 1st opening part provided in the ceiling part 19 is demonstrated, referring FIGS. 3-7. The description of the same or equivalent parts as those described in the above embodiment will be given the same reference numerals.

図５は、建物ユニット１Ａの天井部１９の一部を切断して開口部１９０を設けた斜視図を示している。また、図３は、開口部１９０に差し渡される補強天井根太６の構成を説明する断面図である。   FIG. 5 shows a perspective view in which a part of the ceiling portion 19 of the building unit 1A is cut and an opening 190 is provided. FIG. 3 is a cross-sectional view illustrating the configuration of the reinforcing ceiling joists 6 passed through the opening 190.

この図５では、開口部１９０の形状に合わせて一部が切り取られた天井材１９１が、天井根太１９２，・・・下に貼り付けられている。すなわち、この開口部１９０は、開口部１９０を設ける位置の天井材１９１を切断し、開口部１９０を横断する天井根太１９２を上げ越し処理することによって開口される。この上げ越し処理は、開口部１９０において既存の天井根太１９２の下面の位置のままでは他の部材と干渉するなど支障がある場合におこなわれる。   In FIG. 5, a ceiling material 191 partially cut off in accordance with the shape of the opening 190 is attached to the bottom of the ceiling joists 192. In other words, the opening 190 is opened by cutting the ceiling material 191 at the position where the opening 190 is provided, and lifting the ceiling joist 192 across the opening 190. This over-rolling process is performed when there is a problem such as interference with other members if the position of the lower surface of the existing ceiling joist 192 remains at the opening 190.

図４は、開口部１９０を設ける前に桁側天井梁１５，１５間に架け渡されていた天井根太１９２に対して、開口部１９０の位置の下面を既存の位置より上方に上げるために切取部１９２ａを切り取った天井根太１９２Ａを示した断面図である。   FIG. 4 is a cutaway view of the ceiling joist 192 spanned between the girder-side ceiling beams 15 and 15 before the opening 190 is provided in order to raise the lower surface of the position of the opening 190 above the existing position. It is sectional drawing which showed ceiling joist 192A which cut off the part 192a.

このように天井根太１９２Ａの一部である切取部１９２ａが取り除かれると、桁側天井梁１５，１５の横補剛剛性が低下することになるが、設計的に必要とされる水平方向の剛性が確保できていれば、そのまま既存の天井根太１９２Ａを使用し続けることができる。   If the cutout portion 192a, which is a part of the ceiling joist 192A, is removed in this way, the lateral stiffening rigidity of the girder-side ceiling beams 15 and 15 will be lowered, but the horizontal rigidity required for the design will be reduced. Can be maintained, the existing ceiling joist 192A can be used as it is.

これに対して、切取部１９２ａの除去によって必要とされる水平方向の剛性が確保できなくなる場合は、図３，５に示すように補強天井根太６を開口部１９０に配置することになる。   On the other hand, when the horizontal rigidity required by the removal of the cut-out portion 192a cannot be secured, the reinforcing ceiling joists 6 are arranged in the opening 190 as shown in FIGS.

この補強天井根太６は、桁側天井梁１５，１５間に架け渡される。この補強天井根太６は、開口部１９０に差し渡される上側根太材６１と、その上側根太材６１の一端に重ね合わされる下側根太材６２と、上側根太材６１と下側根太材６２とを接合する連結金具６４と、上側根太材６１の端部と桁側天井梁１５とを繋ぐ端接合金具６３とを主に備えている。   The reinforcing ceiling joists 6 are bridged between the girder-side ceiling beams 15 and 15. The reinforcing ceiling joist 6 includes an upper joist member 61 passed to the opening 190, a lower joist member 62 superimposed on one end of the upper joist member 61, an upper joist member 61, and a lower joist member 62. It mainly includes a connecting fitting 64 to be joined and an end joining fitting 63 that connects the end of the upper joist member 61 and the girder-side ceiling beam 15.

この上側根太材６１は、長尺状の木製の角材によって成形される。また、下側根太材６２も、長尺状の木製の角材によって成形される。さらに、下側根太材６２の一端には、桁側天井梁１５のフランジ１５２に引っ掛けるための引掛部６２ａが形成される。また、上側根太材６１又は下側根太材６２は、開口部１９０に架け渡されていた既存の天井根太１９２を加工することによって形成することができる。   The upper joist 61 is formed of a long wooden square. Further, the lower joist member 62 is also formed of a long wooden square member. Further, a hook 62 a for hooking on the flange 152 of the girder ceiling beam 15 is formed at one end of the lower joist member 62. Further, the upper joist member 61 or the lower joist member 62 can be formed by processing the existing ceiling joist 192 spanned over the opening 190.

そして、下側根太材６２の端部の上に上側根太材６１の端部が載置される。さらに、上下に重ね合わされた上側根太材６１と下側根太材６２とは、上側根太材６１と下側根太材６２の側面に跨って取り付けられる連結金具６４によって接合される。   Then, the end portion of the upper joist member 61 is placed on the end portion of the lower joist member 62. Further, the upper joist member 61 and the lower joist member 62 that are stacked one above the other are joined by a connecting metal fitting 64 that is attached across the side surfaces of the upper joist member 61 and the lower joist member 62.

この連結金具６４は、矩形状の鋼板によって成形される。また、連結金具６４は、締結部材としてのドリルねじ６６，・・・を捩じ込むことによって上側根太材６１と下側根太材６２のそれぞれに固定される。   The connection fitting 64 is formed of a rectangular steel plate. Further, the coupling fitting 64 is fixed to each of the upper joist member 61 and the lower joist member 62 by screwing drill screws 66 as a fastening member.

さらに、この連結金具６４は、上側根太材６１及び下側根太材６２を挟んで両側面に取り付けられる。また、下側根太材６２の開口部１９０側の端面には、図１，３に示すように枠板１９５を直交させる。   Further, the connecting metal fitting 64 is attached to both side surfaces with the upper joist member 61 and the lower joist member 62 interposed therebetween. Further, as shown in FIGS. 1 and 3, a frame plate 195 is orthogonal to the end face of the lower joist member 62 on the opening 190 side.

このように下側根太材６２の上に載置された上側根太材６１の桁側天井梁１５側の端部は、図３に示すようにウエブ１５１の中ほどに当接される。そこで、上側根太材６１の端部と桁側天井梁１５とを繋ぐために端接合金具６３を使用する。   As shown in FIG. 3, the end of the upper joist member 61 placed on the lower joist member 62 on the side of the beam-side ceiling beam 15 is brought into contact with the middle of the web 151. Therefore, an end fitting 63 is used to connect the end of the upper joist 61 and the girder ceiling beam 15.

この端接合金具６３は、上側根太材６１の両側面に沿ってそれぞれ配置される略Ｌ字状に形成された長Ｌ金具６３１と、上側根太材６１の下面より下方に垂下された下端に形成された座金６３２とを備えている。この座金６３２は、桁側天井梁１５の下側のフランジ１５２上に載置され、締結部材としてのドリルねじ６５によって桁側天井梁１５に固定される。   The end fitting 63 is formed at a substantially L-shaped metal fitting 631 that is disposed along both side surfaces of the upper joist member 61 and at a lower end that hangs downward from the lower surface of the upper joist member 61. The washer 632 is provided. The washer 632 is placed on the lower flange 152 of the spar-side ceiling beam 15 and is fixed to the spar-side ceiling beam 15 by a drill screw 65 as a fastening member.

また、この座金６３２と上側根太材６１の端部との間には、台材６１１を介在させる。さらに、端接合金具６３は、ドリルねじ６６，・・・を使って上側根太材６１及び台材６１１に固定させる。   A base material 611 is interposed between the washer 632 and the end portion of the upper joist member 61. Further, the end joining metal fitting 63 is fixed to the upper joist member 61 and the base material 611 using the drill screws 66.

このように構成された補強天井根太６を開口部１９０に配置したユニット建物１０の補強構造は、開口部１９０又はその周辺に位置する天井根太１９２の下面を既存の位置より上方に上げる上げ越し処理を施す。   The reinforcing structure of the unit building 10 in which the reinforced ceiling joists 6 configured as described above are arranged in the opening 190 is a lifting process in which the lower surface of the ceiling joist 192 located in the opening 190 or its periphery is raised above the existing position. Apply.

このように既存のユニット建物１０に開口部を設ける際に、開口部１９０に新たに配置する資機材や部材などと干渉する切取部１９２ａを除去した天井根太１９２Ａとすることで、目的に合った開口部１９０を構築することができる。   Thus, when providing an opening in the existing unit building 10, the ceiling joist 192 </ b> A from which the cutout 192 a that interferes with materials and materials newly arranged in the opening 190 is removed is suitable for the purpose. An opening 190 can be constructed.

例えば、この実施例１のように改装時にエレベータを設ける場合に、最上階の天井部１９に設けた開口部１９０においては、エレベータの取り付けに支障となる天井根太１９２の下部を除去しなければならないことがある。   For example, when an elevator is provided at the time of refurbishment as in the first embodiment, in the opening 190 provided in the ceiling 19 on the uppermost floor, the lower part of the ceiling joist 192 that obstructs the installation of the elevator must be removed. Sometimes.

この際、上げ越し処理をすることによって既存の天井根太１９２の一部が取り除かれると、横補剛効果部材が取り除かれることになって風荷重や地震荷重などの水平方向の荷重が桁側天井梁１５の側方から作用したときの剛性が低下することになる。このため、必要に応じて補強天井根太６を設けることによって水平方向の剛性を充分に確保した上げ越し処理をおこなうこととする。   At this time, if a part of the existing ceiling joist 192 is removed by the over-rolling process, the lateral stiffening effect member is removed, and a horizontal load such as wind load or earthquake load is applied to the girder ceiling. The rigidity when acting from the side of the beam 15 is lowered. For this reason, it is assumed that the over-rolling process in which the horizontal rigidity is sufficiently secured by providing the reinforcing ceiling joists 6 as necessary is performed.

ここで、補強天井根太６を上下に配置する上側根太材６１と下側根太材６２とを使って構成するのであれば、上側根太材６１と下側根太材６２とをスライドさせるだけで容易に既存の桁側天井梁１５，１５間の間隔に合わせることができる。さらに、下側根太材６２の長さを調整することで、容易に上げ越し処理をおこなう範囲を変更することができる。   Here, if the reinforced ceiling joist 6 is configured using the upper joist member 61 and the lower joist member 62 arranged vertically, it is easy to slide the upper joist member 61 and the lower joist member 62 easily. The distance between the existing girder-side ceiling beams 15 and 15 can be adjusted. Furthermore, by adjusting the length of the lower joist material 62, it is possible to easily change the range where the over-rolling process is performed.

また、補強天井根太６の端部に取り付けられる端接合金具６３に、桁側天井梁１５のフランジ１５２に載置させる座金６３２を設けることで、補強天井根太６の端部と桁側天井梁１５とを容易に連結させることができる。   Further, the end joint fitting 63 attached to the end of the reinforced ceiling joist 6 is provided with a washer 632 to be placed on the flange 152 of the spar-side ceiling beam 15, so that the end of the reinforced ceiling joist 6 and the spar-side ceiling beam 15 are provided. Can be easily connected.

さらに、上側根太材６１と下側根太材６２の側面に跨って取り付けられる連結金具６４を使用することで、上下に何ら部材を突出させることなく２つの部材を接合させることができる。すなわち、側面に取り付ける連結金具６４を使用するのであれば、補強天井根太６の上下に突出する箇所がなく、他の部材と干渉することもない。   Furthermore, by using the connecting metal fitting 64 attached across the side surfaces of the upper joist member 61 and the lower joist member 62, the two members can be joined without causing any members to protrude vertically. That is, if the connecting metal fitting 64 attached to the side surface is used, there is no portion protruding above and below the reinforcing ceiling joists 6, and there is no interference with other members.

また、任意の位置にドリルねじ６６，・・・を捩じ込むことで連結金具６４を固定する構成であれば、上側根太材６１及び下側根太材６２に対する位置合わせを正確におこなう必要がなく、容易に上側根太材６１と下側根太材６２とを接合させることができる。   Moreover, if it is the structure which fixes the connection metal fitting 64 by screwing the drill screw 66, ... in arbitrary positions, it is not necessary to perform alignment with respect to the upper joist material 61 and the lower joist material 62 correctly. The upper joist member 61 and the lower joist member 62 can be easily joined.

次に、図６，７を参照しながら、別の形態の補強天井根太７について説明する。上述した補強天井根太６は、上下に２つの根太材を重ねることによって構成されたが、以下で説明する補強天井根太７は、横方向に２つの根太材を重ねることによって構成される。   Next, another form of the reinforcing ceiling joist 7 will be described with reference to FIGS. The reinforced ceiling joists 6 described above are configured by overlapping two joist members on the upper and lower sides. However, the reinforced ceiling joists 7 described below are configured by stacking two joist members in the horizontal direction.

この補強天井根太７は、桁側天井梁１５，１５間に差し渡される主根太材７１と、その主根太材７１の側面に固定される副根太材７２と、主根太材７１と副根太材７２とを接合させる締結部材としての複数の木ねじ７３，・・・とを主に備えている。   This reinforced ceiling joist 7 includes a main joist member 71 passed between the girder-side ceiling beams 15, an auxiliary joist member 72 fixed to the side surface of the main joist member 71, and the main joist member 71 and the sub joist member. A plurality of wood screws 73,.

この主根太材７１は、長尺状の木製の角材によって成形されている。また、主根太材７１は、開口部１９０を跨いで桁側天井梁１５，１５間に架け渡し可能な長さに形成され、端部には桁側天井梁１５のフランジ１５２に引っ掛ける引掛部７１ａが形成される。   The main joist 71 is formed of a long wooden square. Further, the main joist 71 is formed to have a length that can be bridged between the girder-side ceiling beams 15 and 15 across the opening 190, and a hook portion 71 a that is hooked on the flange 152 of the girder-side ceiling beam 15 at the end. Is formed.

さらに、主根太材７１には、開口部１９０に配置される箇所の下部が切り取られた切欠部７１ｂが形成される。この切欠部７１ｂが、下面を既存の位置より上方に上げる上げ越し処理を施した箇所となる。そして、このような主根太材７１は、既存の天井根太１９２を加工することによって形成される。   Further, the main joist material 71 is formed with a notch portion 71b in which a lower portion of a portion arranged in the opening 190 is cut off. This notch 71b is a portion subjected to a lifting process for raising the lower surface upward from the existing position. Such a main joist material 71 is formed by processing an existing ceiling joist 192.

一方、副根太材７２は、長尺状の木製の角材によって主根太材７１よりも短く形成される。また、副根太材７２は、主根太材７１よりも高さが低く形成される。この副根太材７２の高さは、主根太材７１の切欠部７１ｂの高さと略同じ高さになる。   On the other hand, the secondary joist member 72 is formed shorter than the main joist member 71 by a long wooden square member. Further, the secondary joist material 72 is formed to be lower than the main joist material 71. The height of the secondary joist member 72 is substantially the same as the height of the notch 71 b of the main joist member 71.

そして、側方から見て主根太材７１の切欠部７１ｂの軸方向の少なくとも一部と合致するように副根太材７２を重ね合わせ、複数の木ねじ７３，・・・を使って双方を接合する（図６参照）。   Then, the secondary joist members 72 are overlapped so as to coincide with at least a part of the notched portion 71b of the main joist member 71 when viewed from the side, and both are joined using a plurality of wood screws 73,. (See FIG. 6).

また、この補強天井根太７の上には、受け材１９３を載置する。この受け材１９３は、折板屋根のタイトフレーム（図示省略）を支持させる部材である。例えば、折板屋根の上に太陽光パネルを設置する場合は、桁側天井梁１５や妻側天井梁１６の上だけでなく、天井根太１９２上に受け材１９３を載せて、荷重を支持させる場合がある。そのような場合に、補強天井根太７を架け渡した位置でも受け材１９３を支持できる強度に補強をおこなう。   A receiving material 193 is placed on the reinforcing ceiling joists 7. The receiving material 193 is a member that supports a tight frame (not shown) of the folded plate roof. For example, when installing a solar panel on a folded-plate roof, the receiving material 193 is placed not only on the girder-side ceiling beam 15 and the wife-side ceiling beam 16 but also on the ceiling joists 192 to support the load. There is a case. In such a case, the reinforcing material is reinforced so as to support the receiving material 193 even at the position where the reinforcing ceiling joists 7 are bridged.

このように構成された補強天井根太７は、主根太材７１の上部の側面に沿って切欠部７１ｂと同じ高さの副根太材７２を重ねることによって構成される。このため、開口部１９０の上げ越し処理を施した箇所だけでなく、その他の箇所においても主根太材７１よりも上方や下方に突出される箇所がなく、他の部材と干渉するなどの支障を起こさせることなく軸方向の広い範囲にわたって補強をおこなうことができる。   The reinforced ceiling joists 7 configured in this way are configured by overlapping the sub joists 72 having the same height as the cutouts 71 b along the upper side surfaces of the main joists 71. For this reason, there are no places protruding upward or downward from the main joist material 71 in other places as well as places where the opening 190 is subjected to the over-rolling process, and there is a problem such as interference with other members. Reinforcement can be performed over a wide range in the axial direction without causing it.

特に、折板屋根の上に太陽光パネルを設置する際など補強天井根太７の上から荷重を載荷させる場合は、その載荷点周辺を副根太材７２によって部分的に補強することが容易にできる。   In particular, when a load is loaded from above the reinforced ceiling joist 7 such as when installing a solar panel on a folded plate roof, it is easy to partially reinforce the periphery of the loading point with the sub joist member 72. .

なお、他の構成及び作用効果については、上述した補強天井根太６、前記実施の形態又は他の実施例と略同様であるので説明を省略する。   In addition, about another structure and an effect, since it is substantially the same as the reinforcement ceiling joist 6 mentioned above, the said embodiment, or another Example, description is abbreviate | omitted.

以下、実施例２では、図８−１３を参照しながら床部１７に設ける第２開口部としての開口部１７０Ａ，１７０Ｂについて説明する。なお、前記実施の形態又は実施例１で説明した内容と同一乃至均等な部分の説明については同一符号を付して説明する。   Hereinafter, in Example 2, the openings 170A and 170B as the second openings provided in the floor 17 will be described with reference to FIGS. 8-13. The description of the same or equivalent parts as those described in the above embodiment or Example 1 will be given the same reference numerals.

この図８では、構成をわかりやすくするために床材１７１を取り除いた状態を示している。本来であれば、開口部１７０Ａの形状に合わせて一部が切り取られた床材１７１が、床根太１７３，・・・上に貼り付けられている。   FIG. 8 shows a state in which the floor material 171 has been removed for easy understanding of the configuration. Originally, a floor material 171 partially cut off in accordance with the shape of the opening 170A is pasted on the floor joists 173,.

すなわち、この建物ユニット１Ｂの開口部１７０Ａは、開口部１７０Ａの直上の床材１７１と、開口部１７０Ａを横断する床根太１７３Ａ，・・・を切断することによって開口される。   That is, the opening 170A of the building unit 1B is opened by cutting the floor material 171 immediately above the opening 170A and the floor joists 173A that cross the opening 170A.

この床根太１７３Ａは、切断される前は他の床根太１７３と同様に、端部が妻側床梁１３上に載置され、固定ビス１７４によって妻側床梁１３のフランジ１３２に固定されていた。また、開口部１７０Ａの位置に存在していた床材１７１は、切断される前の床根太１７３Ａ，・・・によって支持されていた。   Before the floor joist 173A is cut, like the other floor joists 173, the end portion is placed on the wife side floor beam 13 and fixed to the flange 132 of the wife side floor beam 13 by a fixing screw 174. It was. Moreover, the flooring 171 that existed at the position of the opening 170A was supported by the floor joists 173A before being cut.

これに対して、開口部１７０Ａを設けた後は、開口部１７０Ａ又はその周辺の拘束が開放され、水平方向の剛性が低下することになるため、床補強小梁２Ａ，２Ｂを配置することによって開口部１７０Ａ周辺の床部１７や床梁（１２，１３）の補強をおこなうこととする。   On the other hand, after the opening 170A is provided, the restraint on the opening 170A or its periphery is released and the horizontal rigidity is lowered. Therefore, by arranging the floor reinforcing beamlets 2A and 2B, The floor 17 and the floor beams (12, 13) around the opening 170A are reinforced.

すなわち、図８，９に示すように、妻側床梁１３とそれに隣接する床小梁１７２との間に床補強小梁２Ａを差し渡し、床小梁１７２，１７２間に床補強小梁２Ｂを差し渡す。これらの床補強小梁２Ａ，２Ｂは、例えば四角筒状の角形鋼管によって成形される。   That is, as shown in FIGS. 8 and 9, the floor reinforcing beam 2A is passed between the wife side floor beam 13 and the floor beam 172 adjacent thereto, and the floor reinforcing beam 2B is inserted between the floor beams 172 and 172. Give it away. These floor reinforcing beam 2A, 2B are formed of, for example, a rectangular tubular steel tube.

この床補強小梁２Ａは、一端が妻側床梁１３のウエブ１３１に接合され、他端が床小梁１７２の側面に接合される。この妻側床梁１３に接合される床補強小梁２Ａの端部には、図１０（ａ）に示すように、取付部としての端面板２１が溶接部２３，２３を介して接合される。   One end of the floor reinforcing beam 2A is bonded to the web 131 of the wife side floor beam 13 and the other end is bonded to the side surface of the floor beam 172. As shown in FIG. 10A, an end face plate 21 as an attachment portion is joined to the end portion of the floor reinforcing beam 2A to be joined to the wife side floor beam 13 through welded portions 23 and 23. .

この端面板２１は、床補強小梁２Ａの断面よりも大きな面積を有し、図１０（ａ）に示すように、床補強小梁２Ａの側方（軸直交方向）に張り出した部分が張出部２１ａ，２１ａとなる。   The end face plate 21 has a larger area than the cross section of the floor reinforcing beam 2A, and as shown in FIG. 10A, the portion protruding to the side (axis orthogonal direction) of the floor reinforcing beam 2A is stretched. It becomes the output parts 21a and 21a.

そして、端面板２１の背面をウエブ１３１の床内部側の側面に当接させ、締結部材としてのドリルねじ２２，・・・を床内部側から張出部２１ａ，２１ａに捩じ込むことで、床補強小梁２Ａの一端が妻側床梁１３に固定される。   Then, the back surface of the end face plate 21 is brought into contact with the side surface on the floor inner side of the web 131, and the drill screws 22 as a fastening member are screwed into the projecting portions 21a and 21a from the floor inner side, One end of the floor reinforcing beam 2A is fixed to the wife side floor beam 13.

一方、床補強小梁２Ａの他端及び床補強小梁２Ｂの一端は、図１０（ｂ）に示すように、端面板２１とＬ金具２４とによって構成される取付部を介して床小梁１７２の側面に接合される。   On the other hand, the other end of the floor reinforcing beam 2A and the other end of the floor reinforcing beam 2B are connected to the floor beam via an attachment portion constituted by the end face plate 21 and the L bracket 24 as shown in FIG. 172 is joined to the side surface.

この床補強小梁２Ｂ（２Ａ）の端部は、端面板２１に溶接部２３を介して接合された断面視略Ｌ字形のＬ金具２４の上に載置され、ドリルねじ２２，２２によってＬ金具２４に固定される。   The end portion of the floor reinforcing beam 2B (2A) is placed on an L-shaped metal fitting 24 having a substantially L-shaped cross section joined to the end face plate 21 via a welded portion 23. It is fixed to the metal fitting 24.

また、端面板２１は、その背面を床小梁１７２の側面に当接させ、ドリルねじ２２，・・・を側方から張出部２１ａ，２１ａに捩じ込むことで、床補強小梁２Ｂ（２Ａ）の端部が床小梁１７２に固定される。   Further, the end face plate 21 is brought into contact with the side surface of the floor beam 172, and the drill screws 22,... Are screwed into the projecting portions 21a and 21a from the side, whereby the floor reinforcing beam 2B. The end of (2A) is fixed to the floor beam 172.

さらに、もう一方の床補強小梁２Ｂの端部は、図１０（ｃ）に示すように、取付部としての端面板２１を介して床小梁１７２の側面に接合される。すなわち、端面板２１の背面を床小梁１７２の開口部１７０Ａ側の側面に当接させ、締結部材としてのドリルねじ２２，・・・を開口部１７０Ａ側から張出部２１ａ，２１ａに捩じ込むことで、床補強小梁２Ｂの端部が床小梁１７２に固定される。   Furthermore, the end of the other floor reinforcing beam 2B is joined to the side surface of the floor beam 172 via an end face plate 21 as an attachment portion, as shown in FIG. 10 (c). That is, the rear surface of the end face plate 21 is brought into contact with the side surface of the floor beam 172 on the opening 170A side, and the drill screws 22 as a fastening member are twisted from the opening 170A side to the projecting portions 21a and 21a. As a result, the end of the floor reinforcing beam 2B is fixed to the floor beam 172.

また、図８に示すように、妻側床梁１３とそれに隣接する床小梁１７２との間には、開口部１７０Ａ周辺の２箇所において床補強小梁２Ａ，２Ａが平行に差し渡される。   Further, as shown in FIG. 8, between the wife side floor beam 13 and the floor beam 172 adjacent thereto, the floor reinforcement beam 2A, 2A is passed in parallel at two locations around the opening 170A.

これらの床補強小梁２Ａ，２Ａ，２Ｂの配置位置は、開口部１７０Ａの利用目的に応じて適宜、変更することができる。例えば、図１に示すようにエレベータを設置するに際して１階の建物ユニット１Ｂの床部１７に開口部１７０Ａを設ける場合は、エレベータに使用する資機材や部材の自重などの鉛直荷重が追加されることになるので、その荷重の作用位置に合わせて床補強小梁２Ａ，２Ａ，２Ｂを配置すればよい。   The arrangement positions of these floor reinforcing beam 2A, 2A, 2B can be appropriately changed according to the purpose of use of the opening 170A. For example, as shown in FIG. 1, when installing the opening 170A in the floor 17 of the building unit 1B on the first floor when installing the elevator, a vertical load such as the weight of materials and materials used for the elevator is added. Therefore, the floor reinforcing beamlets 2A, 2A, and 2B may be arranged in accordance with the position where the load is applied.

このように構成された床補強小梁２Ａ，２Ｂを開口部１７０Ａに配置したユニット建物１０の補強構造は、開口部１７０Ａ又はその周辺に位置する床小梁１７２，１７２を、床小梁１７２と妻側床梁１３との間及び床小梁１７２，１７２間に差し渡された床補強小梁２Ａ，２Ｂによって補強する。   The reinforcing structure of the unit building 10 in which the floor reinforcing beam beams 2A and 2B configured as described above are arranged in the opening portion 170A, the floor beam beams 172 and 172 located in the opening portion 170A or its periphery are replaced with the floor beam beam 172. Reinforcement is performed by the floor-reinforcing beam beams 2A and 2B passed between the wife side floor beam 13 and the floor beam beams 172 and 172.

また、開口部１７０Ａを形成する際に床根太１７３Ａ，・・・を切断すると、横補剛効果部材が取り除かれることになって風荷重や地震荷重などの水平方向の荷重が妻側床梁１３の側方から作用したときの剛性が低下することになるが、床補強小梁２Ａ，２Ａ，２Ｂを介在させて支持させることで水平方向の剛性が補われ、妻側床梁１３の変形を抑えることができる。   Further, when the floor joists 173A,... Are cut when the opening 170A is formed, the lateral stiffening effect member is removed, and a horizontal load such as a wind load or an earthquake load is applied to the wife side floor beam 13. However, the rigidity in the horizontal direction is compensated by interposing the floor reinforcing beam beams 2A, 2A, 2B, and the deformation of the wife side floor beam 13 is reduced. Can be suppressed.

そして、床補強小梁２Ａ，２Ｂの両端は、それぞれ開口部１７０Ａ側となる側方から挿入されるドリルねじ２２，・・・によって固定される。このため、既存のユニット建物１０に開口部１７０Ａを設ける際にも、開口部１７０Ａから床補強小梁２Ａ，２Ｂの固定をおこなうことができるので、容易にユニット建物１０を補強することができる。   And both ends of floor reinforcement beam 2A, 2B are fixed by drill screw 22, ... inserted from the side which becomes the opening 170A side, respectively. For this reason, also when providing the opening part 170A in the existing unit building 10, since the floor reinforcement beam 2A, 2B can be fixed from the opening part 170A, the unit building 10 can be easily reinforced.

また、開口部１７０Ａを使って床置きエレベータなどを新たに設ける場合は、開口部１７０Ａの床小梁１７２及び床補強小梁２Ａ，２Ｂにエレベータに使用する部材や機器などの鉛直方向の上載荷重が作用することになる。   In addition, when a floor-mounted elevator or the like is newly provided using the opening 170A, the vertical loading of a member or equipment used for the elevator on the floor beam 172 and the floor reinforcing beam 2A, 2B of the opening 170A Will act.

このようにユニット建物１０に新たな荷重が追加される場合でも、床補強小梁２Ａ，２Ｂによって床小梁１７２や妻側床梁１３の支持点が設けられていれば、充分に耐力を確保することができる。   Even when a new load is added to the unit building 10 as described above, if the supporting points of the floor beam 172 and the wife side floor beam 13 are provided by the floor reinforcing beam 2A, 2B, sufficient strength is secured. can do.

また、床補強小梁２Ａ，２Ｂの端部に軸直交方向に張り出された張出部２１ａを設けることで、開口部１７０Ａを利用して側方から容易にドリルねじ２２，・・・を装着することが可能な装着箇所を確保することができる。   Further, by providing an overhanging portion 21a protruding in the direction perpendicular to the axis at the end of the floor reinforcing beam 2A, 2B, the drill screw 22,... Can be easily made from the side using the opening 170A. It is possible to secure a mounting location that can be mounted.

さらに、床補強小梁２Ａ，２Ｂが床小梁１７２と略同じ高さに配置されれば、床小梁１７２と妻側床梁１３との間及び床小梁１７２，１７２間に軸力材として介在されることになり、妻側床梁１３の側方から作用する力による水平方向の変形（弱軸方向の変形）に対して、床補強小梁２Ａ，２Ｂの軸方向強さによって充分に対抗させることができる。   Furthermore, if the floor reinforcing beam 2A, 2B is disposed at substantially the same height as the floor beam 172, the axial force member between the floor beam 172 and the wife side floor beam 13 and between the floor beams 172, 172. The axial strength of the floor-reinforcing beam beams 2A and 2B is sufficient for horizontal deformation (deformation in the weak axis direction) due to the force acting from the side of the wife side floor beam 13. Can be countered.

次に、図１１−１３を参照しながら、別の形態の床補強小梁３を配置した開口部１７０Ｂについて説明する。すなわち、上述した開口部１７０Ａは、床材１７１と床根太１７３Ａを切断することによって形成されたが、この開口部１７０Ｂは、図１１に示すように建物ユニット１Ｃの床材１７１と床根太１７３Ａと床小梁１７２Ａを切断することによって形成される。   Next, an opening 170B in which another form of the floor reinforcing beam 3 is arranged will be described with reference to FIGS. In other words, the opening 170A described above is formed by cutting the floor material 171 and the floor joist 173A. It is formed by cutting the floor beam 172A.

このようにして形成された開口部１７０Ｂ又はその周辺には、床補強小梁３を使った補強をおこなう。この床補強小梁３は、例えば四角筒状の角形鋼管によって成形される。   Reinforcement using the floor reinforcing beam 3 is performed on the opening 170B thus formed or in the vicinity thereof. The floor reinforcing beam 3 is formed of, for example, a rectangular tubular steel pipe.

この床補強小梁３は、切断された床小梁１７２Ａの下を通ってそれに隣接する別の床小梁１７２と妻側床梁１３との間に差し渡される。また、切断された床小梁１７２Ａの端部は、床補強小梁３の上に載置され、床補強小梁３によって下方から支持される。   The floor reinforcing beam 3 passes under the cut floor beam 172A and is passed between another floor beam 172 adjacent thereto and the wife side floor beam 13. The end of the cut floor beam 172A is placed on the floor reinforcing beam 3 and supported from below by the floor reinforcing beam 3.

この床補強小梁３は、図１２に示すように、一端が妻側床梁１３のウエブ１３１に接合され、他端が床小梁１７２の側面に接合される。この妻側床梁１３に接合される床補強小梁３の端部には、図１２及び図１３（ａ）に示すように、取付部としての梁側取付部３１が設けられている。   As shown in FIG. 12, one end of the floor reinforcing beam 3 is joined to the web 131 of the wife side floor beam 13, and the other end is joined to the side surface of the floor beam 172. As shown in FIGS. 12 and 13A, a beam-side attachment portion 31 as an attachment portion is provided at the end of the floor reinforcing beam 3 joined to the end-side floor beam 13.

この梁側取付部３１は、ウエブ１３１に当接させる取付板３１１と、その取付板３１１の開口部１７０Ｂ側の面に溶接部２３を介して接合される側面視略逆Ｌ字形の接続金具３１２と、接続金具３１２と床補強小梁３の端部との間に介在させるＬ金具３１３とによって主に構成される。   The beam-side mounting portion 31 includes a mounting plate 311 to be brought into contact with the web 131, and a connection bracket 312 having a substantially inverted L shape in side view joined to the surface of the mounting plate 311 on the opening 170B side via the welded portion 23. And an L metal fitting 313 interposed between the connecting metal fitting 312 and the end of the floor reinforcing beam 3.

この接続金具３１２は、図１２に示すように、取付板３１１に側縁が当接されてフランジ１３２より張り出された後に下方に向けて垂下される逆Ｌ字形のＬ状板３１２ａと、間隔を置いて平行に取付板３１１に取り付けられたＬ状板３１２ａ，３１２ａの床内部側（開口部１７０Ｂ側）の側縁間を塞ぐ矩形板３１２ｂとによって形成される。   As shown in FIG. 12, the connection fitting 312 has an inverted L-shaped plate 312a which is lowered downward after the side edge is brought into contact with the mounting plate 311 and protrudes from the flange 132. And a rectangular plate 312b that closes between the side edges of the L-shaped plates 312a and 312a on the floor inner side (opening 170B side) attached to the mounting plate 311 in parallel.

この妻側床梁１３の凹部から張り出して下方に延設される接続金具３１２を介在させることで、床補強小梁３の取り付け位置を、床小梁１７２Ａ，１７２や妻側床梁１３よりも低い位置にすることができる。   By interposing a connection fitting 312 extending from the recessed portion of the wife side floor beam 13 and extending downward, the mounting position of the floor reinforcing beam 3 is set higher than the floor beams 172A and 172 and the wife side floor beam 13. Can be in a low position.

そして、この矩形板３１２ｂの下部に、溶接部２３を介してＬ金具３１３を接合する。また、Ｌ金具３１３の上には、床補強小梁３の端部を載置し、ドリルねじ２２，２２によってＬ金具３１３に固定させる。   And the L metal fitting 313 is joined to the lower part of this rectangular plate 312b via the welding part 23. FIG. Further, the end portion of the floor reinforcing beam 3 is placed on the L metal fitting 313 and fixed to the L metal fitting 313 by the drill screws 22 and 22.

一方、床補強小梁３の他端は、図１２及び図１３（ｂ）に示すように、取付部としての長板３２を介して床小梁１７２の側面に接合される。この長板３２は、床小梁１７２の高さよりも長い長辺を有する長方形状の鋼板によって成形される。   On the other hand, the other end of the floor reinforcing beam 3 is joined to the side surface of the floor beam 172 via a long plate 32 as an attachment portion, as shown in FIGS. 12 and 13B. The long plate 32 is formed of a rectangular steel plate having a long side longer than the height of the floor beam 172.

そして、長板３２の下部に溶接部２３を介して床補強小梁３の端部を接合する。また、床補強小梁３の上方に張り出された長板３２の張出部３２ａには、開口部１７０Ｂ側から締結部材としてのドリルねじ２２，２２を捩じ込むことで、床補強小梁３の端部を床小梁１７２に固定させる。   Then, the end portion of the floor reinforcing beam 3 is joined to the lower portion of the long plate 32 via the welded portion 23. Further, by inserting the drill screws 22, 22 as fastening members from the opening 170 </ b> B side into the protruding portion 32 a of the long plate 32 protruding above the floor reinforcing beam 3, the floor reinforcing beam 3 is fixed to the floor beam 172.

このように床小梁１７２より低い位置に配置される床補強小梁３によって、開口部１７０Ｂを形成する際に切断された床小梁１７２Ａの端部を下方から支持させることで、切断された床小梁１７２Ａ周辺の強度の低下を防ぐことができる。   In this way, the floor reinforcing beam 3 arranged at a position lower than the floor beam 172 is cut by supporting the end portion of the floor beam 172A that is cut when forming the opening 170B from below. It is possible to prevent a decrease in strength around the floor beam 172A.

例えば、エレベータボックスが通過可能な空間や広い吹き抜け空間を形成するには少なくとも一本の床小梁１７２を切断する必要があるが、切断された床小梁１７２Ａは桁側床梁１２との連結が解除されるので、補強がなければたわみ易い状態になる。そして、床小梁１７２Ａがたわみ易い状態になると、床根太１７３を介して床小梁１７２Ａに支持される開口部１７０Ｂ周辺の床材１７１の支持が不充分になり、床のたわみや床鳴りが発生する原因になる。   For example, it is necessary to cut at least one floor beam 172 in order to form a space through which an elevator box can pass or a wide space, but the cut floor beam 172A is connected to the girder floor beam 12. Is released, it will be in a state where it will bend easily without reinforcement. When the floor beam 172A is easily bent, the floor material 171 around the opening 170B supported by the floor beam 172A via the floor joists 173 is insufficiently supported, and floor deflection and floor noise are caused. Cause it to occur.

これに対して切断された床小梁１７２Ａの端部を床補強小梁３によって下方から支持させれば、床小梁１７２Ａの変形が抑制され、開口部１７０Ｂ周辺の床のたわみや床鳴りの発生を防ぐことができる。   On the other hand, if the end of the cut floor beam 172A is supported by the floor reinforcing beam 3 from below, the deformation of the floor beam 172A is suppressed, and the floor deflection and floor noise around the opening 170B are suppressed. Occurrence can be prevented.

また、妻側床梁１３の水平方向（弱軸方向）の剛性についても、妻側床梁１３と床小梁１７２とを連結させる床補強小梁３によって補われるため、妻側床梁１３の側方から作用する水平方向の荷重に対して妻側床梁１３の変形を抑えることができる。   Further, the rigidity in the horizontal direction (weak axis direction) of the wife side floor beam 13 is also compensated by the floor reinforcing beam 3 that connects the wife side floor beam 13 and the floor beam 172. It is possible to suppress the deformation of the wife side floor beam 13 against a horizontal load acting from the side.

また、このように床小梁１７２，１７２Ａよりも低い位置に床補強小梁３を配置する際には、ウエブ１３１に当接させる取付板３１１から下方に延設される接続金具３１２を使用することによって、端部の強度を低下させることなく、床補強小梁３と妻側床梁１３とを容易に連結させることができる。   Further, when the floor reinforcing beam 3 is arranged at a position lower than the floor beams 172 and 172A in this way, a connection fitting 312 extending downward from the mounting plate 311 to be brought into contact with the web 131 is used. Thus, it is possible to easily connect the floor reinforcing beam 3 and the wife side floor beam 13 without reducing the strength of the end portion.

さらに、床補強小梁３が床小梁１７２Ａの下を通過させる低い位置に配置されていれば、床小梁１７２，１７２Ａの高さの空間を有効に活用することができる。   Furthermore, if the floor reinforcing beam 3 is disposed at a low position where it passes under the floor beam 172A, the space at the height of the floor beams 172 and 172A can be used effectively.

なお、他の構成及び作用効果については、上述した床補強小梁２Ａ，２Ｂ、前記実施の形態又は他の実施例と略同様であるので説明を省略する。   In addition, about another structure and an effect, since it is substantially the same as the floor reinforcement beam 2A, 2B mentioned above, the said embodiment, or another Example, description is abbreviate | omitted.

以下、実施例３では、図１４−１９を参照しながら補強梁４，５を使った開口部１７９の補強について説明する。なお、前記実施の形態又は他の実施例で説明した内容と同一乃至均等な部分の説明については同一符号を付して説明する。   Hereinafter, in Example 3, reinforcement of the opening 179 using the reinforcing beams 4 and 5 will be described with reference to FIGS. Note that the description of the same or equivalent parts as those described in the embodiment or other examples will be given with the same reference numerals.

この実施例３では、前記実施例２で説明したような床補強小梁２Ａ，２Ｂ，３による補強だけでなく、開口部１７９周辺の桁側床梁１２及び妻側床梁１３を補強梁４によって直接、補強する構成について説明する。   In the third embodiment, not only the reinforcement by the floor reinforcing beam 2A, 2B, 3 as described in the second embodiment but also the girder-side floor beam 12 and the wife-side floor beam 13 around the opening 179 are used as the reinforcing beam 4. A configuration for direct reinforcement will be described.

例えば、エレベータ経路を形成したり吹き抜け空間を形成したりするために、図１４に示すような大きな開口部１７９を形成すると、床小梁１７２Ａが切断されることになって桁側床梁１２の横補剛剛性が低下することになる。   For example, when a large opening 179 as shown in FIG. 14 is formed in order to form an elevator path or a blow-off space, the floor beam 172A is cut and the beam-side floor beam 12 Lateral stiffening rigidity will decrease.

また、開口部１７９として部材が横たわることのない広い空間を確保するためには、床補強小梁２Ｃ，３Ａを配置する位置も開口部１７９周辺の床材１７１の下に制限されることになる。   Further, in order to secure a wide space where the member does not lie as the opening 179, the position where the floor reinforcing beam 2C, 3A is arranged is also limited below the floor material 171 around the opening 179. .

そこで、この実施例３では、補強梁４を使って、開口部１７９に面する桁側床梁１２及び妻側床梁１３の補強をおこなう。この補強梁４は、図１４，１５に示すように、桁側床梁１２及び妻側床梁１３の軸方向に沿って配置される長尺状の鋼材である。   Therefore, in the third embodiment, the reinforcing beam 4 is used to reinforce the beam-side floor beam 12 and the wife-side floor beam 13 that face the opening 179. As shown in FIGS. 14 and 15, the reinforcing beam 4 is a long steel material disposed along the axial direction of the girder side floor beam 12 and the wife side floor beam 13.

例えば、補強梁４は、図１６に示すように、平行な上下のフランジ４２，４２間がウエブ４１によって連結された断面視略コ字形の溝形鋼によって形成される。また、補強梁４は、妻側床梁１３（又は桁側床梁１２）の凹部の開放側に、補強梁４の凹部の開放側を向かい合わせにした状態で配置される。   For example, as shown in FIG. 16, the reinforcing beam 4 is formed of channel steel having a substantially U-shaped cross-sectional view in which parallel upper and lower flanges 42 and 42 are connected by a web 41. Further, the reinforcing beam 4 is arranged in a state where the opening side of the recessed portion of the reinforcing beam 4 is opposed to the opening side of the recessed portion of the wife side floor beam 13 (or the girder side floor beam 12).

そして、補強梁４は、鉛直方向（補強梁４の短手方向）に間隔を置いて配置される連結部材４３，４３によって妻側床梁１３（又は桁側床梁１２）のウエブ１３１に連結される。この連結部材４３，４３は、図１４，１５に示すように補強梁４の長手方向に、複数個間隔を置いて設けられる。   The reinforcing beam 4 is connected to the web 131 of the wife side floor beam 13 (or the girder side floor beam 12) by connecting members 43 and 43 arranged at intervals in the vertical direction (short direction of the reinforcing beam 4). Is done. As shown in FIGS. 14 and 15, the connecting members 43 and 43 are provided at intervals in the longitudinal direction of the reinforcing beam 4.

この連結部材４３は、図１６に示すように、鋼板を折り曲げ加工することによって形成される。具体的には、連結部材４３の本体部４３１はフランジ１３２と略平行になり、本体部４３１の妻側床梁１３側の端部は、本体部４３１に対して直角上向きに折り曲げられて固定片４３２が形成される。また、補強梁４側の端部は、本体部４３１に対して直角下向きに折り曲げられて固定片４３３が形成される。すなわち、本体部４３１の両端に形成された固定片４３２，４３３同士は、上下逆向きに突出された形状となる。   As shown in FIG. 16, the connecting member 43 is formed by bending a steel plate. Specifically, the main body portion 431 of the connecting member 43 is substantially parallel to the flange 132, and the end portion of the main body portion 431 on the side of the end floor beam 13 is bent upward at a right angle with respect to the main body portion 431, thereby fixing pieces. 432 is formed. Further, the end on the reinforcing beam 4 side is bent at a right angle downward with respect to the main body 431 to form a fixed piece 433. That is, the fixing pieces 432 and 433 formed at both ends of the main body 431 have a shape protruding in the upside down direction.

また、妻側床梁１３のウエブ１３１に当接される固定片４３２は、締結部材としてのドリルねじ４３４によってウエブ１３１に固定される。このドリルねじ４３４の捩じ込みは、開口部１７９を利用して側方からおこなうことができる。   Further, the fixing piece 432 that comes into contact with the web 131 of the wife side floor beam 13 is fixed to the web 131 by a drill screw 434 as a fastening member. The drill screw 434 can be screwed in from the side using the opening 179.

図１７は、図１６のＧ−Ｇ矢視方向で見た連結部材４３，４３の正面を示した図である。下側の連結部材４３の固定片４３２に捩じ込まれるドリルねじ４３４は、上側の連結部材４３の固定片４３３に覆われて側方から見えなくなるが、下側の連結部材４３を先に取り付けるようにすれば、上下の連結部材４３，４３を側方から容易に固定することができる。   FIG. 17 is a view showing the front of the connecting members 43, 43 as seen in the direction of arrows G-G in FIG. 16. The drill screw 434 screwed into the fixing piece 432 of the lower connecting member 43 is covered with the fixing piece 433 of the upper connecting member 43 and cannot be seen from the side, but the lower connecting member 43 is attached first. By doing so, the upper and lower connecting members 43, 43 can be easily fixed from the side.

また、このような形状をした連結部材４３であれば、外壁材に設けられた桟材や補強柱の取付ボルトなどの既存の仕様に干渉しないようにして妻側床梁１３に取り付けることができる。さらに、間隔を置いて配置される連結部材４３，４３を使用する構成であれば、床梁（１２，１３）の水平方向の剛性を少ない部材量で高めることができる。   Moreover, if it is the connection member 43 which has such a shape, it can be attached to the wife side floor beam 13 without interfering with the existing specifications such as a crosspiece provided on the outer wall material and a mounting bolt of the reinforcing column. . Furthermore, if it is the structure which uses the connection members 43 and 43 arrange | positioned at intervals, the rigidity of the horizontal direction of a floor beam (12, 13) can be raised with a small amount of members.

また、開口部１７９側に露出された固定片４３３，４３３に対しては、補強梁４のウエブ４１を当接させ、ドリルねじ４３４，４３４を開口部１７９側から捩じ込むことで、補強梁４を連結部材４３，４３に固定することが容易にできる。   In addition, the web 41 of the reinforcing beam 4 is brought into contact with the fixing pieces 433 and 433 exposed on the opening 179 side, and the drill screws 434 and 434 are screwed in from the opening 179 side, thereby reinforcing the reinforcing beam. 4 can be easily fixed to the connecting members 43 and 43.

このように開口部１７９又はその周辺に位置する床梁（１２，１３）の長手方向に沿って補強梁４，４を配置し、床梁（１２，１３）のウエブ１３１と補強梁４とを両端に固定片４３２，４３３が形成された曲げ板状の連結部材４３とドリルねじ４３４とによって連結させれば、床梁（１２，１３）自体の強軸方向の許容曲げ応力度を低下させることなく、床梁の弱軸方向の強度（床梁の側方から作用する力に対する水平方向の剛性）を高めることができる。   In this way, the reinforcing beams 4 and 4 are arranged along the longitudinal direction of the floor beam (12, 13) located in the opening 179 or the periphery thereof, and the web 131 and the reinforcing beam 4 of the floor beam (12, 13) are arranged. If the bending plate-like connecting member 43 having the fixing pieces 432 and 433 formed at both ends is connected by the drill screw 434, the allowable bending stress degree in the strong axis direction of the floor beam (12, 13) itself is reduced. In addition, the strength of the floor beam in the weak axis direction (horizontal rigidity against the force acting from the side of the floor beam) can be increased.

また、図１４，１５に示すように、開口部１７９の周辺には床補強小梁２Ｃ，３Ａを配置する。この床補強小梁２Ｃによって、切断された床根太１７３Ａ，・・・の端部を下方から支持させる。   Further, as shown in FIGS. 14 and 15, floor reinforcing beam beams 2 </ b> C and 3 </ b> A are arranged around the opening 179. By the floor reinforcing beam 2C, the ends of the cut floor joists 173A,... Are supported from below.

この床補強小梁２Ｃは、床小梁１７２と略平行となるとともに、床小梁１７２と略同じ高さに配置される。また、床補強小梁２Ｃの桁側床梁１２側の端部は、図１５に示すように、取付部としての端面板２１とＬ金具２４を介して、ドリルねじ２２によって桁側床梁１２に固定される。なお、床補強小梁２Ｃの開口部１７９側は枠板１７６Ａによって塞がれる。   The floor reinforcing beam 2C is substantially parallel to the floor beam 172 and is disposed at substantially the same height as the floor beam 172. Further, as shown in FIG. 15, the end portion of the floor reinforcing beam 2C on the side of the girder-side floor beam 12 is drilled by a drill screw 22 via an end face plate 21 and an L bracket 24 as an attachment portion. Fixed to. Note that the opening 179 side of the floor reinforcing beam 2C is closed by the frame plate 176A.

また、床補強小梁２Ｃの他方の端部は、床補強小梁３Ａの上に載置される。この床補強小梁３Ａは、切断された床小梁１７２Ａと、床補強小梁２Ｃの下を通って、妻側床梁１３と床小梁１７２との間に差し渡される。   The other end of the floor reinforcing beam 2C is placed on the floor reinforcing beam 3A. The floor reinforcing beam 3A passes between the cut floor beam 172A and the floor reinforcing beam 2C, and is passed between the wife floor beam 13 and the floor beam 172.

この床補強小梁３Ａの妻側床梁１３側の端部には、図１５に示すように、取付板３１１と接続金具３１２とＬ金具３１３とによって取付部が形成されており、取付板３１１の張出部３１１ａにドリルねじ２２，・・・を捩じ込むことによって妻側床梁１３に固定される。   As shown in FIG. 15, an attachment portion is formed by an attachment plate 311, a connection fitting 312, and an L fitting 313 at the end of the floor reinforcing beam 3 </ b> A on the end side beam 13 side. Are fixed to the wife side floor beam 13 by screwing drill screws 22,... Into the overhanging portion 311a.

また、床補強小梁３Ａの他方の端部には、長板３２が取付部として設けられており、開口部１７９周辺の切断されていない床小梁１７２の側面に長板３２を当接させ、ドリルねじ２２を捩じ込むことによって固定される。   Further, a long plate 32 is provided as an attachment portion at the other end of the floor reinforcing beam 3A, and the long plate 32 is brought into contact with the side surface of the floor beam 172 that is not cut around the opening 179. It is fixed by screwing in the drill screw 22.

さらに、床補強小梁３Ａの上に載置された切断された床小梁１７２Ａの端部は、取付部としての取付金具３３とドリルねじ２２，・・・によって床補強小梁３Ａに固定される。なお、床補強小梁３Ａの開口部１７９側は枠板１７６Ｂによって塞がれる。   Further, the end portion of the cut floor beam 172A placed on the floor reinforcing beam 3A is fixed to the floor reinforcing beam 3A by a mounting bracket 33 as a mounting portion and a drill screw 22,. The Note that the opening 179 side of the floor reinforcing beam 3A is closed by the frame plate 176B.

そして、床補強小梁３Ａの上に載置された床補強小梁２Ｃの端部は、床小梁１７２Ａの端部と同様に、取付部としての取付金具３３とドリルねじ２２，・・・によって床補強小梁３Ａに固定される。   And the end of the floor reinforcing beam 2C placed on the floor reinforcing beam 3A is the same as the end of the floor beam 172A, the mounting bracket 33 as the mounting part and the drill screw 22,. Is fixed to the floor reinforcing beam 3A.

一方、大きな開口部１７９を形成すると、下階の建物ユニット１Ｂの天井部１９では、天井根太１９２が大きく切り欠かれたり切断されたりして、桁側天井梁１５の横補剛剛性が低下することがある。また、図２に示すように、妻側天井梁１６の横補剛剛性は、隣接する天井根太１９２との間に差し渡された端根太１９４，・・・によって確保されているが、この端根太１９４が取り除かれると妻側天井梁１６の横補剛剛性が低下することになる。   On the other hand, when the large opening 179 is formed, the ceiling joist 192 is largely cut or cut in the ceiling 19 of the building unit 1B on the lower floor, and the lateral stiffening rigidity of the girder-side ceiling beam 15 is lowered. Sometimes. Further, as shown in FIG. 2, the lateral stiffening rigidity of the end-side ceiling beam 16 is ensured by end joists 194,... Passed between adjacent ceiling joists 192. When the joist 194 is removed, the lateral stiffening rigidity of the wife side ceiling beam 16 is lowered.

そこで、補強梁５を使って開口部１７９に面する桁側天井梁１５及び妻側天井梁１６の補強をおこなう。この補強梁５は、図１４，１９に示すように、桁側天井梁１５及び妻側天井梁１６の軸方向に沿って配置される長尺状の鋼材である。   Therefore, the beam-side ceiling beam 15 and the wife-side ceiling beam 16 that face the opening 179 are reinforced using the reinforcing beam 5. As shown in FIGS. 14 and 19, the reinforcing beam 5 is a long steel material disposed along the axial direction of the girder-side ceiling beam 15 and the wife-side ceiling beam 16.

例えば、補強梁５は、図１８に示すように、平行な上下のフランジ５２，５２間がウエブ５１によって連結された断面視略コ字形の溝形鋼によって形成される。また、補強梁５は、桁側天井梁１５（又は妻側天井梁１６）の凹部の開放側に、補強梁５の凹部の開放側を向かい合わせにした状態で配置される。   For example, as shown in FIG. 18, the reinforcing beam 5 is formed of channel steel having a substantially U-shape in cross section in which parallel upper and lower flanges 52 and 52 are connected by a web 51. Further, the reinforcing beam 5 is disposed in a state where the opening side of the concave portion of the reinforcing beam 5 is opposed to the opening side of the concave portion of the girder side ceiling beam 15 (or the wife side ceiling beam 16).

そして、補強梁５は、鉛直方向（補強梁５の短手方向）に間隔を置いて２箇所に形成される固定片５３２，５３２を有する連結部材５３によって桁側天井梁１５（又は妻側天井梁１６）のウエブ１５１に連結される。この連結部材５３は、図１４，１９に示すように補強梁５の長手方向に、複数個間隔を置いて設けられる。   The reinforcing beam 5 is connected to the girder-side ceiling beam 15 (or the wife-side ceiling) by a connecting member 53 having fixed pieces 532 and 532 formed at two positions at intervals in the vertical direction (short direction of the reinforcing beam 5). It is connected to the web 151 of the beam 16). As shown in FIGS. 14 and 19, the connecting members 53 are provided at intervals in the longitudinal direction of the reinforcing beam 5.

この連結部材５３は、図１８に示すように、鋼板を折り曲げ加工することによって形成される。具体的には、連結部材５３の梁側固定部５３１はウエブ１５１に沿って平板状に形成され、その梁側固定部５３１の上下の両縁部５３３，５３３はフランジ１５２，１５２と略平行となるように直角に折り曲げられることによって形成される。   As shown in FIG. 18, the connecting member 53 is formed by bending a steel plate. Specifically, the beam side fixing portion 531 of the connecting member 53 is formed in a flat plate shape along the web 151, and both upper and lower edges 533 and 533 of the beam side fixing portion 531 are substantially parallel to the flanges 152 and 152. It is formed by being bent at right angles.

そして、上側の縁部５３３の補強梁５側を直角上向きに折り曲げることによって上側の固定片５３２が形成される。また、下側の縁部５３３の補強梁５側を直角下向きに折り曲げることによって下側の固定片５３２が形成される。すなわち、連結部材５３の上縁と下縁に形成された固定片５３２，５３２同士は、上下逆向きに突出された形状となる。   Then, the upper fixing piece 532 is formed by bending the upper edge portion 533 toward the reinforcing beam 5 at a right angle upward. Further, the lower fixing piece 532 is formed by bending the lower edge portion 533 on the side of the reinforcing beam 5 downward at a right angle. That is, the fixing pieces 532 and 532 formed on the upper edge and the lower edge of the connecting member 53 have a shape protruding in the upside down direction.

また、桁側天井梁１５のウエブ１５１に当接される梁側固定部５３１は、締結部材としてのドリルねじ５３４によってウエブ１５１に固定される。このドリルねじ５３４の捩じ込みは、開口部１７９を利用して側方からおこなうことができる。   The beam-side fixing portion 531 that is in contact with the web 151 of the girder-side ceiling beam 15 is fixed to the web 151 by a drill screw 534 as a fastening member. The drill screw 534 can be screwed in from the side using the opening 179.

図１９は、連結部材５３，５３によって桁側天井梁１５に固定された補強梁５を開口部１７９の中央側から見た正面図である。この図に示すように、開口部１７９側に露出される固定片５３２，５３２に対しては、補強梁５のウエブ５１を当接させ、ドリルねじ５３４，５３４を開口部１９０側から捩じ込むことで、補強梁５を連結部材５３に固定することが容易にできる。   FIG. 19 is a front view of the reinforcing beam 5 fixed to the girder-side ceiling beam 15 by the connecting members 53, 53 as viewed from the center side of the opening 179. As shown in this figure, the web 51 of the reinforcing beam 5 is brought into contact with the fixing pieces 532 and 532 exposed on the opening 179 side, and the drill screws 534 and 534 are screwed from the opening 190 side. Thus, the reinforcing beam 5 can be easily fixed to the connecting member 53.

このように開口部１７９又はその周辺に位置する桁側天井梁１５の長手方向に沿って補強梁５を配置し、桁側天井梁１５のウエブ１５１と補強梁５とを両端に固定片５３２，５３２が形成された曲げ板状の連結部材５３とドリルねじ５３４とによって連結させれば、桁側天井梁１５自体の強軸方向の許容曲げ応力度を低下させることなく、桁側天井梁１５の弱軸方向の強度（桁側天井梁１５の側方から作用する力に対する水平方向の剛性）を高めることができる。   In this way, the reinforcing beam 5 is arranged along the longitudinal direction of the girder-side ceiling beam 15 located in the opening 179 or the periphery thereof, and the web 151 and the reinforcing beam 5 of the girder-side ceiling beam 15 are fixed to both ends by the fixing pieces 532. If the bending plate-like connecting member 53 formed with 532 and the drill screw 534 are connected, the allowable bending stress in the strong axis direction of the girder-side ceiling beam 15 itself is not lowered, and the girder-side ceiling beam 15 is reduced. The strength in the weak axis direction (the horizontal rigidity against the force acting from the side of the girder-side ceiling beam 15) can be increased.

このように開口部１７９又はその周辺に位置する天井梁（１５，１６）の長手方向に沿って補強梁５を配置し、天井梁（１５，１６）のウエブ１５１と補強梁５とを両端に固定片５３２，５３２が形成された曲げ板状の連結部材５３とドリルねじ５３４，・・・とによって連結させることで開口部１７９を補強することができる。   In this way, the reinforcing beam 5 is arranged along the longitudinal direction of the ceiling beam (15, 16) located at the opening 179 or its periphery, and the web 151 and the reinforcing beam 5 of the ceiling beam (15, 16) are arranged at both ends. The opening 179 can be reinforced by being connected by a bending plate-like connecting member 53 in which the fixing pieces 532 and 532 are formed and the drill screws 534.

このように実施例３では、図１４に示すように開口部１７９の上階側の四辺が、補強梁４，４及び床補強小梁２Ｃ，３Ａによって補強される。ここで、床補強小梁２Ｃが配置されることによって、切断された床根太１７３Ａ，・・・の端部が下方から支持されることになり、開口部１７９周辺の床部１７が補強される。   Thus, in Example 3, as shown in FIG. 14, the four sides on the upper floor side of the opening 179 are reinforced by the reinforcing beams 4 and 4 and the floor reinforcing beam 2C and 3A. Here, by arranging the floor reinforcing beam 2C, the cut ends of the floor joists 173A, ... are supported from below, and the floor 17 around the opening 179 is reinforced. .

また、桁側床梁１２の横補剛効果部材であった床小梁１７２Ａの切断によって低下した水平方向の剛性を、床補強小梁２Ｃによる支持点を追加することによって補うことができる。   Further, the horizontal rigidity reduced by the cutting of the floor beam 172A, which is the lateral stiffening effect member of the girder-side floor beam 12, can be compensated by adding a support point by the floor reinforcing beam 2C.

さらに、床補強小梁３Ａが配置されることによって、切断された床小梁１７２Ａ及び床補強小梁２Ｃの端部が下方から支持されることになり、開口部１７９周辺の床部１７が補強される。   Furthermore, by arranging the floor reinforcing beam 3A, the ends of the cut floor beam 172A and the floor reinforcing beam 2C are supported from below, and the floor 17 around the opening 179 is reinforced. Is done.

また、妻側床梁１３の横補剛効果部材であった床根太１７３Ａ，・・・の切断によって低下した水平方向の剛性を、床補強小梁３Ａによる支持点を追加することによって補うことができる。   Moreover, the horizontal rigidity reduced by the cutting of the floor joists 173A,... Which was the lateral stiffening effect member of the wife side floor beam 13 can be compensated by adding a support point by the floor reinforcing beam 3A. it can.

このように開口部１７９又はその周辺に位置する床梁（１２，１３）の長手方向に沿って補強梁４，４を配置し、床梁（１２，１３）のウエブ１３１と補強梁４とを両端に固定片４３２，４３３が形成された曲げ板状の連結部材４３，４３とドリルねじ４３４，・・・とによって連結させることで、床補強小梁２Ｃ，３Ａによる補強効果に加えて、さらに開口部１７９を補強することができる。   In this way, the reinforcing beams 4 and 4 are arranged along the longitudinal direction of the floor beam (12, 13) located in the opening 179 or the periphery thereof, and the web 131 and the reinforcing beam 4 of the floor beam (12, 13) are arranged. In addition to the reinforcing effect by the floor reinforcing beam beams 2C, 3A, by connecting the connecting members 43, 43 having the bent pieces 432, 433 formed at the both ends with the drill screws 434,. The opening 179 can be reinforced.

一方、開口部１７９の下階側は、開口部１７９に面する桁側天井梁１５及び妻側天井梁１６に沿って配置される補強梁５，５によって補強される。さらに、図示していないが、開口部１７９の下階側には、実施例１で説明した補強天井根太６，７を配置して補強することができる。   On the other hand, the lower floor side of the opening 179 is reinforced by the reinforcing beams 5 and 5 arranged along the girder-side ceiling beam 15 and the wife-side ceiling beam 16 facing the opening 179. Further, although not shown, the reinforcing ceiling joists 6 and 7 described in the first embodiment can be arranged and reinforced on the lower floor side of the opening 179.

このため、既存のユニット建物１０の耐力を落とすことなく、改装時にエレベータ経路となる開口部１７９を、１階の建物ユニット１Ｂと２階の建物ユニット１Ａとの境界に新たに設けることができる。   For this reason, the opening part 179 which becomes an elevator path | route at the time of renovation can be newly provided in the boundary of the 1st floor building unit 1B and the 2nd floor building unit 1A, without reducing the yield strength of the existing unit building 10. FIG.

また、連結部材４３，４３が補強梁４の短手方向に少なくとも２個設けられている場合は、床梁（１２，１３）と連結部材４３，４３と補強梁４とで閉断面に近い断面が形成されるので、床梁（１２，１３）の許容曲げ応力度を増加させることができる。さらに、連結部材５３の固定片５３２，５３２が補強梁５の短手方向の２箇所に設けられている場合も、天井梁（１５，１６）と固定片５３２，５３２を有する連結部材５３と補強梁５とで閉断面に近い断面が形成されるので、同様の効果を得ることができる。   When at least two connecting members 43, 43 are provided in the short direction of the reinforcing beam 4, the floor beam (12, 13), the connecting members 43, 43, and the reinforcing beam 4 are close to a closed cross section. Thus, the allowable bending stress degree of the floor beams (12, 13) can be increased. Further, when the fixing pieces 532 and 532 of the connecting member 53 are provided at two places in the short direction of the reinforcing beam 5, the connecting member 53 having the ceiling beam (15, 16) and the fixing pieces 532 and 532 and the reinforcing member 53 are also reinforced. Since a cross section close to the closed cross section is formed with the beam 5, the same effect can be obtained.

また、連結部材４３，５３を、図１４に示すように、補強梁４，５の長手方向に複数個間隔を置いて設ける構成とすることで、床小梁１７２や天井根太１９２や端根太１９４が取り付けられていた箇所を避けて連結部材４３，５３を取り付けることができる。このため、床小梁１７２や天井根太１９２の端部をそのまま切り残したり、その取付金具１７５などをそのまま残したりしても、補強梁４，５を取り付けることができる。   Further, as shown in FIG. 14, a plurality of connecting members 43 and 53 are provided at intervals in the longitudinal direction of the reinforcing beams 4 and 5, so that the floor beam 172, the ceiling joist 192, and the end joist 194 are provided. The connecting members 43 and 53 can be attached while avoiding the place where the is attached. For this reason, the reinforcing beams 4 and 5 can be attached even if the ends of the floor beam 172 and the ceiling joist 192 are left as they are, or the mounting brackets 175 are left as they are.

さらに、補強梁４，５を、床梁（１２，１３）及び天井梁（１５，１６）の凹部の開放側に凹部の開放側を向かい合わせにした溝形鋼又はリップ付き溝形鋼によって形成することで、既存のユニット建物に下階から上階にわたる吹き抜け空間を設けるなどの改装時において、補強梁４，５にフランジ４２，５２を設けた分、板状の補強梁を使用した場合に比べて水平方向の剛性を高めることができる。   Further, the reinforcing beams 4 and 5 are formed of a grooved steel in which the opening side of the recessed part faces the opening side of the recessed part of the floor beam (12, 13) and the ceiling beam (15, 16) or a grooved steel with a lip. Therefore, when renovating the existing unit building, such as providing an atrium space from the lower floor to the upper floor, when the reinforcing beams 4 and 5 are provided with the flanges 42 and 52, the plate-shaped reinforcing beams are used. Compared to this, the rigidity in the horizontal direction can be increased.

また、補強梁４，５のフランジ４２，５２が床梁側又は天井梁側を向いて床梁（１２，１３）又は天井梁（１５，１６）の凹部に収容されるのであれば、開口部１７９への突出量を最小限に抑えることができ、内壁材１８１（図１参照）などを取り付ける際にも邪魔になることがない。   If the flanges 42 and 52 of the reinforcing beams 4 and 5 face the floor beam side or the ceiling beam side and are accommodated in the recesses of the floor beam (12, 13) or the ceiling beam (15, 16), the opening portion The amount of protrusion to 179 can be minimized, and there is no hindrance when attaching the inner wall material 181 (see FIG. 1) or the like.

なお、他の構成及び作用効果については、前記実施の形態又は他の実施例と略同様であるので説明を省略する。   Other configurations and functions and effects are substantially the same as those of the above-described embodiment or other examples, and thus description thereof is omitted.

以上、図面を参照して、本発明の実施の形態を詳述してきたが、具体的な構成は、この実施の形態及び実施例に限らず、本発明の要旨を逸脱しない程度の設計的変更は、本発明に含まれる。   The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration is not limited to the embodiment and the example, and the design change is within a range not departing from the gist of the present invention. Are included in the present invention.

例えば、前記実施の形態又は実施例では、第１天井梁を桁側天井梁１５とし、第２天井梁を妻側天井梁１６としたが、これに限定されるものではなく、第１天井梁を妻側天井梁とし、第２天井梁を桁側天井梁としてもよい。また、第１天井梁と第２天井梁の長さが同じであってもよい。また、第１床梁を桁側床梁１２とし、第２床梁を妻側床梁１３としたことについても、これに限定されるものではない。   For example, in the above-described embodiment or example, the first ceiling beam is the girder-side ceiling beam 15 and the second ceiling beam is the wife-side ceiling beam 16, but the present invention is not limited to this. May be the wife side ceiling beam, and the second ceiling beam may be the girder side ceiling beam. Further, the lengths of the first ceiling beam and the second ceiling beam may be the same. Further, the first floor beam is the girder-side floor beam 12 and the second floor beam is the wife-side floor beam 13, but the present invention is not limited to this.

さらに、前記実施例１では、締結部材としてドリルねじ６５，６６，５３４又は木ねじ７３を使用する場合について説明したが、これに限定されるものではなく、例えば、ドリルなどの穿孔機で孔を開けたり既存の孔が利用できたりするのであれば、ワンサイドボルト、ネジ、ビスなどを締結部材として使用することができる。また、端接合金具６３及び連結金具６４の固定にはドリルねじ６６に代えて木ねじや釘などを使用することもできる。さらに、主根太材７１と副根太材７２との接合には、木ねじ７３に代えてドリルねじや釘などを使用することもできる。また、前記実施例２では、締結部材としてドリルねじ２２，４３４を使用する場合について説明したが、前記実施例１と同様にこれに限定されるものではない。   Further, in the first embodiment, the case where the drill screw 65, 66, 534 or the wood screw 73 is used as the fastening member has been described. However, the present invention is not limited to this. If existing holes can be used, one-side bolts, screws, screws or the like can be used as fastening members. Further, instead of the drill screw 66, a wood screw or a nail can be used for fixing the end joining metal fitting 63 and the connection metal fitting 64. Further, a drill screw, a nail, or the like can be used instead of the wood screw 73 for joining the main joist member 71 and the sub joist member 72. Moreover, in the said Example 2, although the case where the drill screws 22 and 434 were used as a fastening member was demonstrated, it is not limited to this similarly to the said Example 1. FIG.

また、前記実施例１では、補強される天井根太として桁側天井梁１５，１５間に架け渡される補強天井根太６，７について説明したが、これに限定されるものではなく、妻側天井梁１６と天井根太１９２との間に架け渡される端根太１９４を上げ越し処理する場合にも同様の補強をおこなうことができる。例えば、前記実施例１で説明した端接合金具６３を使って端根太１９４の下面の位置を上方に移動させることができる。   In the first embodiment, the reinforced ceiling joists 6 and 7 spanned between the girder-side ceiling beams 15 and 15 have been described as the reinforced ceiling joists. However, the present invention is not limited to this example. The same reinforcement can be performed when the edge joist 194 spanned between the upper joist 16 and the ceiling joist 192 is subjected to an over-rolling process. For example, the position of the bottom surface of the end joist 194 can be moved upward using the end joint fitting 63 described in the first embodiment.

また、前記実施例２では、開口部１７０Ａの床小梁１７２を、床補強小梁２Ａ，２Ｂによって両側から支持させたが、これに限定されるものではなく、所望される強度によってはいずれか一方の床補強小梁２Ａ（２Ｂ）のみの配置であってもよい。   Further, in the second embodiment, the floor beam 172 of the opening 170A is supported from both sides by the floor reinforcing beam 2A, 2B. However, the present invention is not limited to this, and depending on the desired strength, Only one floor reinforcing beam 2A (2B) may be arranged.

さらに、前記実施例２では、床補強小梁３，３Ａは、一本の床小梁１７２Ａの下を通過しているだけであるが、これに限定されるものではなく、複数の床小梁１７２，・・・の下を通過させる床補強小梁であってもよい。   Further, in the second embodiment, the floor reinforcing beam 3 and 3A only pass under one floor beam 172A, but the present invention is not limited to this. 172,... May be a floor reinforcing beam.

また、前記実施例３では、開口部１７９に面した桁側床梁１２と妻側床梁１３の両方を補強梁４，４によって補強し、桁側天井梁１５と妻側天井梁１６の両方を補強梁５，５によって補強したが、これに限定されるものではなく、いずれかの梁を補強するだけでもよい。   In the third embodiment, both the beam-side floor beam 12 and the wife-side floor beam 13 facing the opening 179 are reinforced by the reinforcing beams 4, 4, and both the beam-side ceiling beam 15 and the wife-side ceiling beam 16 are reinforced. However, the present invention is not limited to this, and any one of the beams may be reinforced.

さらに、前記実施の形態又は実施例では、ラーメン構造体である建物ユニット１Ａ，１Ｂを複数、隣接させて構成されるユニット建物１０の補強構造について説明したが、これに限定されるものではない。例えば、軽量形鋼を使った梁材と柱材とによって組み立てられる骨組構造体が形成される鉄骨造の建物にも本発明を適用することができる。   Furthermore, although the said embodiment or Example demonstrated the reinforcement structure of the unit building 10 comprised by making two or more building units 1A and 1B which are ramen structures adjacent, it is not limited to this. For example, the present invention can be applied to a steel structure building in which a frame structure assembled by a beam material and a column material using lightweight steel is formed.

１０ ユニット建物（建物）
１，１Ａ−１Ｃ 建物ユニット（骨組構造体）
１１ 柱（柱材）
１２ 桁側床梁（第１床梁、梁材）
１３ 妻側床梁（第２床梁、梁材）
１３１ ウエブ
１３２ フランジ
１５ 桁側天井梁（第１天井梁、梁材）
１５１ ウエブ
１５２ フランジ
１６ 妻側天井梁（第２天井梁、梁材）
１７ 床部
１７２，１７２Ａ 床小梁
１７３，１７３Ａ 床根太
１７０Ａ，１７０Ｂ 開口部（第２開口部）
１９ 天井部
１９２，１９２Ａ 天井根太
１９０ 開口部（第１開口部）
２Ａ−２Ｃ 床補強小梁
２１ 端面板（取付部）
２１ａ 張出部
３，３Ａ 床補強小梁
３１ 梁側取付部（取付部）
３１１ 取付板
３１１ａ 張出部
３２ 長板（取付部）
３２ａ 張出部
３３ 取付金具（取付部）
４ 補強梁
４１ ウエブ
４２ フランジ
４３ 連結部材
４３１ 本体部
４３２，４３３ 固定片
４３４ ドリルねじ（締結部材）
５ 補強梁
５１ ウエブ
５２ フランジ
５３ 連結部材
５３２ 固定片
５３４ ドリルねじ（締結部材）
６ 補強天井根太
７ 補強天井根太 10 unit building (building)
1,1A-1C Building unit (frame structure)
11 Pillar (column material)
12 Girder-side floor beam (first floor beam, beam material)
13 Wife side floor beam (second floor beam, beam material)
131 Web 132 Flange 15 Girder-side ceiling beam (first ceiling beam, beam material)
151 Web 152 Flange 16 Wife side ceiling beam (second ceiling beam, beam material)
17 Floor portion 172, 172A Floor beam 173, 173A Floor joist 170A, 170B Opening (second opening)
19 Ceiling part 192, 192A Ceiling joist 190 opening (first opening)
2A-2C Floor reinforcement beam 21 End plate (Mounting part)
21a Overhang part 3, 3A Floor reinforcement beam 31 Beam side attachment part (attachment part)
311 Mounting plate 311a Overhang portion 32 Long plate (mounting portion)
32a Overhang part 33 Mounting bracket (Mounting part)
4 Reinforcement beam 41 Web 42 Flange 43 Connecting member 431 Main body 432, 433 Fixing piece 434 Drill screw (fastening member)
5 Reinforcement beam 51 Web 52 Flange 53 Connecting member 532 Fixing piece 534 Drill screw (fastening member)
6 Reinforced ceiling joists 7 Reinforced ceiling joists

Claims (6)

梁材と柱材とによって形成される骨組構造体を複数、備えた建物の補強構造であって、
前記骨組構造体の上縁は、第１方向に向けて略平行に配置される一対の第１天井梁と、前記第１方向に略直交する第２方向に向けて略平行に配置される一対の第２天井梁とによって形成されるとともに、前記第１天井梁間には、前記第２方向に向けた天井根太が前記第１方向に間隔を置いて複数、差し渡されており、
前記骨組構造体の下縁は、前記第１方向に向けて略平行に配置される一対の第１床梁と、前記第２方向に向けて略平行に配置される一対の第２床梁とによって形成されるとともに、前記第１床梁間には、前記第２方向に向けた床小梁が前記第１方向に間隔を置いて複数、差し渡されており、
少なくとも一つの前記骨組構造体の天井部の一部を切断して第１開口部を形成した際に、前記第１開口部又はその周辺に補強天井根太を設け、
少なくとも一つの前記骨組構造体の床部の一部を切断して第２開口部を形成した際に、前記第２開口部又はその周辺に位置する前記床小梁に対して、前記第１方向に向けた床補強小梁を、前記床小梁と前記第２床梁との間又は前記床小梁間に差し渡し、前記床補強小梁の両端をそれぞれ側方から挿入される締結部材によって固定させる構造であって、
前記床補強小梁は、少なくとも１本の床小梁を下方から支持するとともに、それとは別の前記床小梁と前記第２床梁との間に差し渡されることを特徴とする建物の補強構造。 Reinforcement structure of a building provided with a plurality of frame structures formed by beams and pillars,
The upper edge of the frame structure is a pair of first ceiling beams arranged substantially parallel to the first direction and a pair arranged substantially parallel to the second direction substantially orthogonal to the first direction. And a plurality of ceiling joists facing in the second direction are provided between the first ceiling beams at intervals in the first direction.
The lower edges of the frame structure are a pair of first floor beams disposed substantially parallel to the first direction, and a pair of second floor beams disposed substantially parallel to the second direction. And a plurality of floor beams extending in the second direction are provided between the first floor beams at intervals in the first direction.
When a first opening is formed by cutting a part of the ceiling of at least one of the frame structures, a reinforcing ceiling joist is provided on or around the first opening,
When the second opening is formed by cutting a part of the floor of at least one of the frame structures, the first direction with respect to the second beam at or near the second opening The floor reinforcing beam is directed between the floor beam and the second floor beam or between the floor beams, and both ends of the floor reinforcing beam are fixed by fastening members inserted from the sides. Structure,
The floor-reinforcing beam supports at least one floor beam from below and is extended between the other floor beam and the second floor beam. Construction. 前記第１開口部と前記第２開口部は、鉛直方向に投影した際に重なる位置に形成されていることを特徴とする請求項１に記載の建物の補強構造。   The building reinforcement structure according to claim 1, wherein the first opening and the second opening are formed at positions overlapping when projected in the vertical direction. 前記補強天井根太は、前記第１開口部又はその周辺の下面の位置を既存の天井根太の下面の位置より上方に上げる上げ越し処理が施されていることを特徴とする請求項１又は２に記載の建物の補強構造。   The reinforced ceiling joist is subjected to an uplift process in which the position of the lower surface of the first opening or its periphery is raised above the position of the lower surface of the existing ceiling joist. Reinforcement structure of the building described. 前記床補強小梁の端部には、軸直交方向に張り出された張出部を有する取付部が設けられており、前記張出部に装着される締結部材によって前記第２床梁又は前記床小梁と前記床補強小梁とが連結されることを特徴とする請求項１乃至３のいずれか一項に記載の建物の補強構造。   The end of the floor reinforcing beam is provided with a mounting portion having a protruding portion protruding in the direction perpendicular to the axis, and the second floor beam or the above-mentioned member is attached by a fastening member attached to the protruding portion. The building reinforcing structure according to any one of claims 1 to 3, wherein a floor beam is connected to the floor reinforcing beam. 前記第１開口部若しくは前記第２開口部又はそれらの周辺に位置する前記第１天井梁、前記第２天井梁、前記第１床梁又は前記第２床梁の少なくとも一つは、天井内部側又は床内部側が開放されるように凹部が向けられた溝形鋼又はリップ付き溝形鋼によって形成されており、その凹部の開放側に前記第１天井梁、前記第２天井梁、前記第１床梁又は前記第２床梁に沿って補強梁が配置され、
前記凹部を形成するウエブと前記補強梁とが、前記補強梁を取り付けるための固定片が形成された曲げ板状の連結部材と締結部材とによって連結されることを特徴とする請求項１乃至４のいずれか一項に記載の建物の補強構造。 At least one of the first ceiling beam, the second ceiling beam, the first floor beam, or the second floor beam located at or around the first opening or the second opening is on the ceiling inner side Alternatively, it is formed of a grooved steel or a grooved steel with a lip so that the inner side of the floor is opened, and the first ceiling beam, the second ceiling beam, the first A reinforcing beam is disposed along the floor beam or the second floor beam,
It claims 1 to 4 and the web and the reinforcing beams forming said recess, characterized in that it is connected with the a fastening member connecting member fixing piece is formed bent plate shape for mounting the reinforcing beams The building reinforcing structure according to any one of the above. 前記補強梁は、前記凹部の開放側に、凹部の開放側を向かい合わせにした溝形鋼又はリップ付き溝形鋼であることを特徴とする請求項５に記載の建物の補強構造。 6. The building reinforcement structure according to claim 5 , wherein the reinforcing beam is a grooved steel or a grooved steel with a lip facing the open side of the recess facing the open side of the recess.
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JP2012241465A (en) * 2011-05-23 2012-12-10 Sekisui Chem Co Ltd Staircase structure of unit building, building unit and unit building

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JP2012241465A (en) * 2011-05-23 2012-12-10 Sekisui Chem Co Ltd Staircase structure of unit building, building unit and unit building

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