JP4309809B2 - Building floor joists - Google Patents

Building floor joists Download PDF

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Publication number
JP4309809B2
JP4309809B2 JP2004177226A JP2004177226A JP4309809B2 JP 4309809 B2 JP4309809 B2 JP 4309809B2 JP 2004177226 A JP2004177226 A JP 2004177226A JP 2004177226 A JP2004177226 A JP 2004177226A JP 4309809 B2 JP4309809 B2 JP 4309809B2
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Prior art keywords
floor
joist
joists
supported
frame
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JP2006002362A (en
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昌崇 川久保
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Sekisui Chemical Co Ltd
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Sekisui Chemical Co Ltd
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Description

本発明は、金属製の角型鋼管からなる根太が一定間隔を置いて複数平行に並べられた建
物の床根太に関する発明である。 The present invention relates to a floor joist of a building in which a plurality of joists made of metal square steel pipes are arranged in parallel at regular intervals.

従来の建物の床根太（以下、床根太という）としては、図３に示すようなものが知られている（例えば、特許文献１、２参照）。
Conventional floor joists (hereinafter referred to as floor joists) of buildings are known as shown in FIG. 3 (see, for example, Patent Documents 1 and 2 ).

この床根太１は、一対の床桁梁２、２間に平行に渡した複数の床小梁３に下面が支持さ
れるとともに、一対の妻床梁４に両端部５Ａ、５Ａが支持された複数の根太５を備えてい
る。そして、この複数の根太５は、床小梁３及び床妻梁４と直交する方向に沿って平行に
並べられている。 The floor joist 1 has a lower surface supported by a plurality of floor beams 3 that are parallel to each other between a pair of floor beams 2 and 2, and both ends 5 </ b> A and 5 </ b> A are supported by a pair of wife floor beams 4. A plurality of joists 5 are provided. The plurality of joists 5 are arranged in parallel along a direction perpendicular to the floor beam 3 and the floor girder 4.

また、この複数の根太５の上面には、例えば厚さ１５ｍｍのパーチクルボードからなる
床板６が設けられ、各根太５はこの床板６によって覆われている。なお、図３において、
床板６は複数の根太５の一部を覆っているが、通常すべての根太５が床板６によって覆わ
れる。 Further, a floor plate 6 made of a particle board having a thickness of 15 mm, for example, is provided on the upper surface of the plurality of joists 5, and each joist 5 is covered with the floor plate 6. In FIG. 3,
Although the floor board 6 covers a part of the plurality of joists 5, all the joists 5 are usually covered with the floor board 6.

そして、各根太５の両端部５Ａ、５Ａには、図３（ｂ）及び図４に示すように、下部が
切り取られて長手方向に突出した支持部５Ｂがそれぞれ形成されている。支持部５Ｂは妻
床梁４によって支持され、根太５は、支持部５Ｂ及び床板６を貫通するタッピンネジ７に
よって床妻梁４に固定されている。 And as shown in FIG.3 (b) and FIG. 4, the support part 5B which the lower part was cut off and protruded in the longitudinal direction is formed in both ends 5A and 5A of each joist 5, respectively. The supporting portion 5B is supported by the end floor beam 4, and the joist 5 is fixed to the floor end beam 4 by a tapping screw 7 that passes through the supporting portion 5B and the floor plate 6.

さらに、この従来の床根太１を備えた建物を、いわゆる準耐火建築物に適合させるため
には、床板６を加熱開始後４５分間変形等に耐えうる構造としなければならなかった。 Furthermore, in order to adapt the building having the conventional floor joist 1 to a so-called quasi-refractory building, the floorboard 6 must have a structure that can withstand deformation and the like for 45 minutes after the start of heating.

そのため、このような準耐火建築物に適合した建物の場合では、例えば床板６´を厚さ
１２ｍｍのパーチクルボード６Ａと厚さ１２ｍｍの硬質木片セメント板６Ｂとを張り合わ
せて厚さ２４ｍｍに形成していた。 Therefore, in the case of a building suitable for such a quasi-refractory building, for example, a floor board 6 'is formed to a thickness of 24 mm by laminating a particle board 6A having a thickness of 12 mm and a hard wood cement board 6B having a thickness of 12 mm. .

また、異種用途区画等に使用するために所定の防火性能が必要な床である界床であって
も、床板は上述の厚さ２４ｍｍに形成されていた。 Moreover, even if the floor is a floor that requires a predetermined fire prevention performance for use in different types of application sections, the floor board has been formed with the above-mentioned thickness of 24 mm.

このように、床板６の厚さが、１５ｍｍから２４ｍｍに変更される場合、床板６の増加
した厚み分だけ床板６の上面が上方に位置することとなってしまう。そのため、図５（ａ
）に示すように、根太５の支持部５Ｂの高さＨ１を床板６の増加した厚み分だけ低く（小
さく）し、設置面Ｓから根太５の上面までの高さＨ２を低く（小さく）することが考えら
れた。 Thus, when the thickness of the floor board 6 is changed from 15 mm to 24 mm, the upper surface of the floor board 6 is positioned upward by the increased thickness of the floor board 6. Therefore, FIG.
As shown in), the height H 1 of the support portion 5B of the joist 5 by increased thickness of the floor panel 6 depressed (small), reduce the height H 2 of up to the upper surface of the joist 5 from the installation surface S (small ) Was considered.

しかし、このように支持部５Ｂの高さＨ１を低くすると、この支持部５Ｂの根元の強度
が低下し、上方から荷重Ｆが負荷された場合、図５（ｂ）に示すように、支持部５Ｂの根
元が破損するおそれがあった。 However, in this manner to reduce the height H 1 of the support portion 5B, if the root of the strength is lowered in the support portion 5B, the load F from above is loaded, as shown in FIG. 5 (b), the support There was a possibility that the base of the portion 5B was damaged.

そこで、床板６の厚みが変更された場合には、図６に示すように、妻床梁４の開放側に
断面コ字状の支持部材８を合せるように設けて、この支持部材８の側面に根太受プレート
９を溶接固定し、この根太受プレート９の上面に根太５の端部５Ａをタッピンネジ７によ
って固定したものが考えられていた。 Therefore, when the thickness of the floor plate 6 is changed, as shown in FIG. 6, a support member 8 having a U-shaped cross section is provided on the open side of the end floor beam 4, and a side surface of the support member 8 is provided. It has been considered that the joist receiving plate 9 is fixed by welding and the end 5A of the joist 5 is fixed to the upper surface of the joist receiving plate 9 with a tapping screw 7.

一方、根太５の強度を高めるために、根太５を金属製の角型鋼管によって形成したものも知られている（例えば、特許文献３参照）。
特公平７−６２３３号公報 特公昭５８−３７４６２号公報 特開２００４−１９１９１号公報 On the other hand, in order to increase the strength of the joists 5, it is also known that the joists 5 are formed of a metal square steel pipe (for example, see Patent Document 3 ).
Japanese Patent Publication No. 7-6233 Japanese Patent Publication No.58-37462 JP 2004-19191 A

しかしながら、従来の床根太１において、準耐火建築物に適合した建物とするために床
板６の厚みを変更した場合、妻床梁４の開放側に設けられた支持部材８の側面に根太受プ
レート９を溶接固定しなければならず、溶接工程が必要であった。 However, in the conventional floor joist 1, when the thickness of the floor board 6 is changed in order to make the building suitable for a semi-refractory building, the joist receiving plate is provided on the side surface of the support member 8 provided on the open side of the end floor beam 4. 9 had to be fixed by welding, and a welding process was required.

また、支持部材８及び根太受プレート９が必要となるために部品点数が増加し、製造コ
ストも増加するという問題も生じていた。 Further, since the support member 8 and the joist receiving plate 9 are necessary, there are problems that the number of parts increases and the manufacturing cost also increases.

さらに、根太５を金属製の角型鋼管によって形成した場合では、根太５の長手方向中間
部を切断し、この切断した端部近傍の上壁５Ｃにタッピンネジ７を貫通させて床小梁３等
に固定する際に（図７（ａ）参照）、タッピンネジ７の周囲に荷重や衝撃が加わって根太
５の上壁５Ｃが変形することがあった（図７（ｂ）参照）。 Furthermore, when the joist 5 is formed of a metal square steel pipe, the longitudinal intermediate portion of the joist 5 is cut, and a tapping screw 7 is passed through the upper wall 5C in the vicinity of the cut end so that the floor beam 3 and the like When fixing to (see FIG. 7A), a load or an impact is applied around the tapping screw 7 and the upper wall 5C of the joist 5 may be deformed (see FIG. 7B).

そこで、この発明は、床板の厚みに対応して設置面から根太の上面までの高さを容易に
変更することができるとともに、根太と床フレームとの接合部の強度を低下させることの
ない建物の床根太を提供することを課題としている。 Therefore, the present invention can easily change the height from the installation surface to the upper surface of the joist according to the thickness of the floor board and does not reduce the strength of the joint between the joist and the floor frame. The issue is to provide the floor joists.

上記課題を解決するために、請求項１に記載の発明は、上面が床板で覆われ、下面が方形枠状の床フレームに保持された床小梁で支持されるとともに、両端部が前記床フレームに支持される金属製の角型鋼管からなる根太を有し、該根太が一定間隔を置いて複数平行に並べられた建物の床根太であって、前記根太の両端部には、下部を切り取ることにより断面逆Ｕ字状で、且つ、前記床フレームの上面に支持される支持部が形成されてなり、前記支持部の内側にはスペーサが配設され、前記根太は、前記スペーサを介して前記床フレームに支持されるとともに、前記支持部及び前記スペーサを貫通する固定部材によって前記床フレームに固定されることを特徴としている。
In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that the upper surface is covered with a floor plate, the lower surface is supported by a floor beam supported by a square frame-like floor frame, and both ends are the floor. A floor joist of a building having a joist made of a metal square steel pipe supported by a frame, the joists being arranged in parallel at regular intervals, and at both ends of the joist, there are lower portions A support portion that is inverted U-shaped in cross section and is supported on the upper surface of the floor frame is formed by cutting, and a spacer is disposed inside the support portion, and the joist is interposed through the spacer. And is fixed to the floor frame by a fixing member penetrating the support portion and the spacer .

請求項２に記載の発明は、上面が床板で覆われ、下面が方形枠状の床フレームに保持された床小梁で支持されるとともに、両端部が前記床フレーム上に支持される金属製の角型鋼管からなる根太を有し、該根太が一定間隔を置いて複数平行に並べられた建物の床根太であって、前記根太の両端部の上壁には、端部を折り曲げられて形成された補剛部が設けられていることを特徴としている。
According to the second aspect of the present invention, the upper surface is covered with a floor board, the lower surface is supported by a floor beam supported by a square frame-like floor frame, and both ends are supported on the floor frame. A floor joist of a building in which a plurality of the joists are arranged in parallel at regular intervals, and the upper walls of both ends of the joists are bent at the ends. A formed stiffening portion is provided .

請求項３に記載の発明は、前記根太の両端部には、下部を切り取ることにより断面逆Ｕ字状で、且つ、前記床フレームの上面に支持される支持部が形成され、該支持部の内側にはスペーサが配設され、前記根太は、前記スペーサを介して前記床フレームに支持されるとともに、前記支持部及び前記スペーサを貫通する固定部材によって前記床フレームに固定されることを特徴としている。
According to a third aspect of the present invention, at both ends of the joist, a support portion supported by the upper surface of the floor frame is formed by cutting the lower portion and having an inverted U-shaped cross section. spacer is disposed on the inner side, the joists is supported on the underframe via the spacer, as a feature to be fixed to the floor frame by a fixing member penetrating the supporting portion and the spacer Yes.

本願請求項１の発明によれば、根太の両端部に断面逆Ｕ字状で妻床梁の上面に支持され
る支持部が形成されたので、この支持部の高さを変更することによって、床板の厚みに応
じて設置面から根太の上面までの高さを適宜変更することができる。 According to the invention of claim 1 of the present application, since the support portion supported by the upper surface of the wife floor beam in the inverted U-shaped cross section is formed at both ends of the joist, by changing the height of this support portion, The height from the installation surface to the upper surface of the joist can be appropriately changed according to the thickness of the floor board.

そのため、床板の厚みに関わらず、容易な構造で設置面から床板上面までの高さを一定
にすることができる。 Therefore, regardless of the thickness of the floor board, the height from the installation surface to the upper surface of the floor board can be made constant with an easy structure.

また、根太が金属製の角型鋼管であるため、根太と床フレームとの接合部の強度の低下
を防止することができる。 Moreover, since the joist is a metal square steel pipe, it is possible to prevent the strength of the joint between the joist and the floor frame from being lowered.

また、根太が支持部及びこの支持部の内側に配設されたスペーサを貫通する固定部材によって床フレームに固定されたので、根太を床フレームに容易に固定することができるとともに、支持部の変形を確実に防止することができる。
 Further, since the joist is fixed to the floor frame by the support member and a fixing member that penetrates the spacer disposed inside the support portion, the joist can be easily fixed to the floor frame and the support portion is deformed. Can be reliably prevented.

本願請求項２の発明によれば、根太の両端部の上壁には、折り曲げられて形成された補剛部が設けられたので、根太の両端部の上壁の強度を増加させることができる。そのため、この根太の両端部を釘等で床フレームに固定する場合であっても、根太の上壁が変形することを防止できる。
According to the invention of claim 2 of the present application, since the stiffening portions formed by bending are provided on the upper walls of both ends of the joists, the strength of the upper walls of both ends of the joists can be increased. . Therefore, even when both ends of the joists are fixed to the floor frame with nails or the like, the upper wall of the joists can be prevented from being deformed.

本願請求項３の発明によれば、請求項２の効果に加え、根太が補剛部を形成された支持部及びこの支持部の内側に配設されたスペーサを貫通する固定部材によって床フレームに固定されたので、根太を床フレームに容易に固定することができるとともに、よりいっそう支持部の変形を防止することができる。
According to the invention of claim 3 of the present application, in addition to the effect of claim 2 , the floor joist is attached to the floor frame by the support member having the stiffening portion formed therein and the fixing member penetrating the spacer disposed inside the support portion. Since it is fixed, the joist can be easily fixed to the floor frame, and deformation of the support portion can be further prevented.

次に、図面に基づいて、この発明を実施するための最良の実施の形態の建物の床根太を
説明する。 Next, a floor joist of a building according to the best mode for carrying out the present invention will be described with reference to the drawings.

図１（ａ）に示す建物ユニット１０は、床梁１１と、床梁（床フレーム）１１上に立設
された柱１２と、柱１２の上部に支持された天井梁１３とを備えた鉄骨構造体を有してい
る。 A building unit 10 shown in FIG. 1A is a steel frame including a floor beam 11, a column 12 erected on the floor beam (floor frame) 11, and a ceiling beam 13 supported on the top of the column 12. It has a structure.

床梁１１は、平行に配置された一対の妻床梁１４、１４と、この一対の妻床梁１４、１
４の端部に掛け渡された一対の桁床梁１５、１５とを備え、方形枠状を呈している。そし
て、一対の桁床梁１５、１５間には複数の床小梁１６が掛け渡されている。 The floor beam 11 includes a pair of end floor beams 14 and 14 arranged in parallel, and the pair of end floor beams 14 and 1
4 is provided with a pair of girder beams 15 and 15 spanning the end portions of 4 and has a rectangular frame shape. A plurality of floor beams 16 are spanned between the pair of girder floor beams 15 and 15.

また、妻床梁１４の上側には、複数の根太２０が各床小梁１６と直交する方向に沿って
平行に配設され、各根太２０の下面は床小梁１６によって支持されている。 In addition, a plurality of joists 20 are arranged in parallel along the direction perpendicular to each floor beam 16 above the end floor beam 14, and the lower surface of each joist 20 is supported by the floor beam 16.

根太２０の上側には、床板１７が配設されており、この床板１７によって各根太２０の
上面が覆われている。なお、図１（ａ）における床板１７は一部の根太２０をのみを覆っ
ているが、通常すべての根太２０が床板１７によって覆われる。 On the upper side of the joist 20, a floor board 17 is disposed, and the upper face of each joist 20 is covered with the floor board 17. Although the floor board 17 in FIG. 1A covers only some joists 20, all joists 20 are usually covered by the floor boards 17.

柱１２は、妻床梁１４と桁床梁１５との接合部分にそれぞれ設けられ、ほぼ垂直に起立
している。 The pillars 12 are respectively provided at the joint portions between the end floor beam 14 and the girder floor beam 15 and stand substantially vertically.

天井梁１３は、妻床梁１４と平行に配設されるとともに柱１２間に掛け渡された一対の
妻天井梁１８、１８と、桁床梁１５と平行に配設されるとともに柱１２間に掛け渡された
一対の桁天井梁１９、１９と、桁天井梁１９、１９間に掛け渡された複数の補助梁１９ａ
とを備えている。 The ceiling beam 13 is disposed in parallel with the end floor beam 14 and is disposed in parallel with the pair of end ceiling beams 18 and 18 spanned between the columns 12 and the girder floor beam 15 and between the columns 12. A pair of girder ceiling beams 19, 19 spanned across the plurality of auxiliary beams 19 a spanned between the girder ceiling beams 19, 19
And.

そして、補助梁１９ａの下面側に図示しない天井パネルが取り付けられて、天井が形成
される。 And the ceiling panel which is not illustrated is attached to the lower surface side of the auxiliary beam 19a, and a ceiling is formed.

根太２０は、短手方向の断面がほぼ正方形を成す金属製の角型鋼管によって形成されて
いる。なお、この角型鋼管は中空となっており、各壁面２０Ａ〜２０Ｃの板厚Ｔ（図１（
ｂ）参照）はここでは、それぞれ８ｍｍとなっている。また、この厚みＴはこれに限らず
、適宜所望の厚みに変更してもよい。 The joist 20 is formed of a metal square steel pipe whose cross section in the short side direction is substantially square. The square steel pipe is hollow, and the wall thicknesses 20A to 20C of the wall surfaces 20A to 20C (FIG. 1 (
Here b) is 8 mm each. Moreover, this thickness T is not restricted to this, You may change to desired thickness suitably.

そして、この根太２０の長手方向の両端部２１、２１には、図１（ｂ）に示すように、
下部を切り取られることによって短手方向の断面が逆Ｕ字状になった支持部２２がそれぞ
れ形成されている。 And in both ends 21 and 21 of the longitudinal direction of this joist 20, as shown in FIG.1 (b),
The lower portions are cut off to form support portions 22 each having a reverse U-shaped cross section in the short direction.

つまり、この支持部２２は、根太２０の一方の側壁２０Ｂの上下方向中間部から下壁２
０Ｃ、他方の側壁（図示せず）の上下方向中間部に渡って切り取られ、上壁２０Ａと一対
の側壁２０Ｂ（他方図示せず）がそれぞれ長手方向に突出することで形成されている。 That is, the support portion 22 extends from the vertical middle portion of the one side wall 20B of the joist 20 to the lower wall 2.
0C is formed by cutting off the middle part in the vertical direction of the other side wall (not shown), and the upper wall 20A and a pair of side walls 20B (the other side not shown) project in the longitudinal direction.

そのため、一対の側壁２０Ｂの上下方向中間部の切り取る位置を変更することによって
、支持部２２の高さＨ３を適宜変更することが可能となる。 Therefore, by changing the position to cut the vertically intermediate portions of the pair of side walls 20B, it is possible to change the height H 3 of the supporting portion 22 appropriately.

そして、この支持部２２の内側（開放側）には、直方体形状を呈したスペーサ２３が内
接するように配設されている。このスペーサ２３の高さＨ４は、支持部２２の高さＨ３よ
りも大きくされ、側壁２０Ｂの下端よりも下面が僅かに下方に突出している。これにより
、後述するように、根太２０を妻床梁１４上に配置した際に、支持部２２の下端が妻床梁
１４に当接しないようになっている。 A spacer 23 having a rectangular parallelepiped shape is disposed on the inner side (open side) of the support portion 22 so as to be inscribed therein. This height H 4 of the spacer 23 is larger than the height H 3 of the support portion 22, a lower surface than the lower end of the side wall 20B is slightly projected downward. Thereby, as will be described later, when the joists 20 are arranged on the end floor beam 14, the lower end of the support portion 22 does not come into contact with the end floor beam 14.

また、スペーサ２３は、合板や火山性ガラス質複層板等によって形成され、ねじや釘等
を打ち込んでも割れや欠けが生じにくいものとなっている。 The spacer 23 is formed of plywood, a volcanic glassy multilayer board, or the like, and is not easily cracked or chipped even when a screw, a nail, or the like is driven.

なお、ここでは、根太２０の上壁２０Ａ及び両側壁２０Ｂに密着しているが、両側壁２
０Ｂに密着していなくともよい。 Here, the joists 20 are in close contact with the upper wall 20A and both side walls 20B.
It may not be in close contact with 0B.

そして、この建物ユニット１０の床根太を形成するには、まず、角型鋼管によって形成
された根太２０の長手方向の両端部２１、２１の下部をそれぞれ切り取り、断面逆Ｕ字状
の支持部２２を形成する。 And in order to form the floor joist of this building unit 10, first, the lower part of the both ends 21 and 21 of the longitudinal direction of the joist 20 formed by the square steel pipe is cut off, respectively, and the support part 22 having an inverted U-shaped cross section is obtained. Form.

次に、支持部２２の内側に、あらかじめ支持部２２に内接するように形成されたスペー
サ２３を挿入し、図示しない接着剤等で接着固定する。 Next, a spacer 23 formed in advance so as to be inscribed in the support portion 22 is inserted inside the support portion 22 and bonded and fixed with an adhesive (not shown) or the like.

そして、スペーサ２３が内側に接着固定された支持部２２を妻床梁１４上に配置し、支
持部２２とスペーサ２３とを共に貫通する固定部材であるタッピンネジ７によって妻床梁
１４に根太２０を固定する。 Then, the support portion 22 having the spacer 23 bonded and fixed to the inside is disposed on the end floor beam 14, and the joist 20 is attached to the end floor beam 14 by a tapping screw 7 that is a fixing member that penetrates both the support portion 22 and the spacer 23. Fix it.

このように、根太２０を長手方向の両端部２１、２１に形成された断面逆Ｕ字状の支持
部２２によって妻床梁１４上に固定したので、この支持部２２の高さＨ３を変更すること
によって、設置面から根太２０の上壁２０Ａまでの高さを適宜変更することができる。 Thus, since the joists 20 and secured to the wife floor beams 14 by a longitudinal section opposite formed at both ends 21, 21 U-shaped support portion 22, changing the height H 3 of the support portion 22 By doing so, the height from the installation surface to the upper wall 20A of the joist 20 can be appropriately changed.

そして、床板１７の厚みに応じて設置面から根太２０の上壁２０Ａまでの高さを変更で
きるので、床板１７の厚みに関わらず、常に設置面から床板１７の上面までの高さを一定
にすることが可能となる。 Since the height from the installation surface to the upper wall 20A of the joist 20 can be changed according to the thickness of the floor plate 17, the height from the installation surface to the upper surface of the floor plate 17 is always constant regardless of the thickness of the floor plate 17. It becomes possible to do.

さらに、根太２０が金属製の角型鋼管によって形成されているので、支持部２２の高さ
Ｈ３が根太２０の中間部の太さよりも小さくなっても強度がほとんど低下せず、根太２０
と妻床梁１４との接合部の強度の低下を防止することができる。 Further, since the floor joists 20 are formed by square steel pipes made of metal, strength without almost drops smaller than the height H 3 is the thickness of the middle portion of the joists 20 of the support portion 22, joists 20
It is possible to prevent a decrease in the strength of the joint between the floor floor beam 14 and the end floor beam 14.

そして、支持部２２の内側にスペーサ２３を介してタッピンネジ７を貫通させたので、
支持部２２が内側からスペーサ２３で支持され、タッピンネジ７を打ち込む衝撃で支持部
２２の上壁２０Ａが変形することを防止できる。 And since the tapping screw 7 was penetrated inside the support part 22 via the spacer 23,
The support portion 22 is supported by the spacer 23 from the inside, and the upper wall 20A of the support portion 22 can be prevented from being deformed by the impact of driving the tapping screw 7.

また、スペーサ２３によって支持部２２を妻床梁１４上に容易に位置決めして、配置す
ることができ、容易に固定することが可能となる。 In addition, the support portion 22 can be easily positioned and arranged on the floor floor beam 14 by the spacer 23, and can be easily fixed.

一方、玄関、階段等を形成するために床根太が長手方向中間部で分断される場合には、
図２に示すように、根太２０を長手方向中間部で切断する。 On the other hand, when floor joists are divided at the middle in the longitudinal direction to form entrances, stairs, etc.
As shown in FIG. 2, the joists 20 are cut at the intermediate portion in the longitudinal direction.

そして、図２（ａ）、（ｂ）に示すように、根太２０の上壁２０Ａの端部を下側に折り
曲げて補剛部２４を形成する。 Then, as shown in FIGS. 2A and 2B, the end portion of the upper wall 20 </ b> A of the joist 20 is bent downward to form the stiffening portion 24.

この補剛部２４は、上壁２０Ａの端部を全長に渡ってへこませることで形成され、上壁
２０Ａの強度を向上させている。 The stiffening portion 24 is formed by denting the end of the upper wall 20A over its entire length, and improves the strength of the upper wall 20A.

そのため、図２（ｃ）に示すように、タッピンネジ７を根太２０の上壁２０Ａに打ち込
んだ際に、タッピンネジ７の周囲に荷重や衝撃が加わっても、図２（ｄ）に示すように、
上壁２０Ａの変形を防止することができる。 Therefore, as shown in FIG. 2C, even when a load or impact is applied around the tapping screw 7 when the tapping screw 7 is driven into the upper wall 20A of the joist 20, as shown in FIG.
Deformation of the upper wall 20A can be prevented.

また、図示しないが、上述の支持部２２の端部に補剛部２４を形成しても良い。この場
合、補剛部２４によって支持部２２の上壁２０Ａの強度が向上し、さらに根太２０と妻床
梁１４との接合部の強度の低下を防止することができる。 Although not shown, a stiffening portion 24 may be formed at the end of the support portion 22 described above. In this case, the strength of the upper wall 20 </ b> A of the support portion 22 is improved by the stiffening portion 24, and further, the strength of the joint portion between the joist 20 and the end floor beam 14 can be prevented from being lowered.

そして、補剛部２４を形成した支持部２２の内側にスペーサ２３を配置した場合では、
スペーサ２３によって支持部２２の上壁２０Ａの変形が防止されることに加え、補剛部２
４によって上壁２０Ａの強度を向上させることが可能となる。 And in the case where the spacer 23 is arranged inside the support part 22 in which the stiffening part 24 is formed,
In addition to preventing deformation of the upper wall 20A of the support portion 22 by the spacer 23, the stiffening portion 2
4 makes it possible to improve the strength of the upper wall 20A.

そのため、根太２０を妻床梁１４に容易に固定することができるとともに、よりいっそ
う支持部２２の変形を防止することができる。 Therefore, the joist 20 can be easily fixed to the end floor beam 14 and the deformation of the support portion 22 can be further prevented.

以上、この発明にかかる実施の形態の一つを図面により詳述してきたが、この発明の床
根太を備えた建物ユニット１０を複数組み合わせてユニット建物を形成してもよい。この
場合、床板１７の厚みに対応して設置面から根太２０の上面までの高さを容易に変更する
ことができるとともに、根太２０と妻床梁１４との接合部の強度を低下させることのない
ユニット建物を提供することが可能となる。 Although one embodiment according to the present invention has been described in detail with reference to the drawings, a unit building may be formed by combining a plurality of building units 10 having floor joists according to the present invention. In this case, the height from the installation surface to the upper surface of the joist 20 can be easily changed corresponding to the thickness of the floor board 17, and the strength of the joint portion between the joist 20 and the end floor beam 14 can be reduced. It becomes possible to provide no unit building.

また、この発明の建物の床根太は、建物ユニットの床に限られずプレハブ住宅等の床に
も適用することが可能である。この場合であっても、床板の厚みに対応して設置面から根
太の上面までの高さを容易に変更することができるとともに、根太と妻床梁との接合部の
強度を低下させることのないプレハブ住宅を提供することが可能となる。 Moreover, the floor joist of the building of this invention is not restricted to the floor of a building unit, It can be applied also to floors, such as a prefab house. Even in this case, it is possible to easily change the height from the installation surface to the top surface of the joist according to the thickness of the floor board, and to reduce the strength of the joint between the joist and the floor beam. It will be possible to provide no prefabricated houses.

この発明の実施の形態の床根太を備えた建物ユニットの全体を示す斜視図である。It is a perspective view showing the whole building unit provided with floor joists of an embodiment of this invention. 図１（ａ）におけるＡ部の拡大図である。It is an enlarged view of the A section in Fig.1 (a). （ａ）はこの発明の床根太が長手方向で切断された場合を示す斜視図であり、（ｂ）は図２（ａ）におけるＢ−Ｂ断面図であり、（ｃ）は図２（ａ）においてタッピンネジを貫通させる際の説明図であり、（ｄ）は図２（ａ）においてタッピンネジが貫通した場合を示す説明図である。(A) is a perspective view which shows the case where the floor joist of this invention is cut | disconnected by the longitudinal direction, (b) is BB sectional drawing in Fig.2 (a), (c) is FIG.2 (a). ) Is an explanatory diagram when the tapping screw is passed through, and (d) is an explanatory diagram showing a case where the tapping screw is penetrated in FIG. （ａ）は従来の床根太を備えた建物の全体を示す斜視図であり、（ｂ）は図３（ａ）におけるＣ部の拡大図である。(A) is a perspective view which shows the whole building provided with the conventional floor joist, (b) is an enlarged view of the C section in Fig.3 (a). 図３（ａ）におけるＤ−Ｄ断面図である。It is DD sectional drawing in Fig.3 (a). （ａ）は従来の床根太において床板の厚みを変更した場合を示す説明図である、（ｂ）は図５（ａ）において、上方から荷重が負荷した場合を示す説明図である。(A) is explanatory drawing which shows the case where the thickness of a floor board is changed in the conventional floor joist, (b) is explanatory drawing which shows the case where a load is loaded from upper direction in Fig.5 (a). 従来の床根太において、床板の厚みに応じてさらに変更した場合を示す説明図である。It is explanatory drawing which shows the case where it changes further according to the thickness of a floor board in the conventional floor joist. （ａ）、（ｂ）は従来の床根太を鋼管にした例を示す説明図である。(A), (b) is explanatory drawing which shows the example which used the conventional floor joist as the steel pipe.

符号の説明Explanation of symbols

７ タッピンネジ（固定部材）
１０ 建物ユニット（建物）
１１ 床梁（床フレーム）
１６ 床小梁
１７ 床板
２０ 根太
２１、２１ 両端部
２２ 支持部
２３ スペーサ
２４ 補剛部 7 Tapping screw (fixing member)
10 Building unit (building)
11 Floor beams (floor frame)
16 floor beam 17 floor board 20 joist 21, 21 both ends 22 support part
23 Spacer
24 Stiffening part

Claims (3)

上面が床板で覆われ、下面が方形枠状の床フレームに保持された床小梁で支持されるとともに、両端部が前記床フレームに支持される金属製の角型鋼管からなる根太を有し、該根太が一定間隔を置いて複数平行に並べられた建物の床根太であって、
前記根太の両端部には、下部を切り取ることにより断面逆Ｕ字状で、且つ、前記床フレームの上面に支持される支持部が形成されてなり、
前記支持部の内側にはスペーサが配設され、前記根太は、前記スペーサを介して前記床フレームに支持されるとともに、前記支持部及び前記スペーサを貫通する固定部材によって前記床フレームに固定されることを特徴とする建物の床根太。 The upper surface is covered with a floor plate, the lower surface is supported by a floor beam supported by a square frame-like floor frame, and both ends have joists made of a metal square steel pipe supported by the floor frame. , The joists are floor joists of a building that are arranged in parallel at regular intervals,
At both ends of the joists, by forming a support portion that is supported by the upper surface of the floor frame, and having an inverted U-shaped cross section by cutting off the lower part ,
A spacer is disposed inside the support portion, and the joist is supported by the floor frame via the spacer and is fixed to the floor frame by a fixing member that penetrates the support portion and the spacer. The floor joist of the building characterized by that. 上面が床板で覆われ、下面が方形枠状の床フレームに保持された床小梁で支持されるとともに、両端部が前記床フレーム上に支持される金属製の角型鋼管からなる根太を有し、該根太が一定間隔を置いて複数平行に並べられた建物の床根太であって、
前記根太の両端部の上壁には、端部を折り曲げられて形成された補剛部が設けられていることを特徴とする建物の床根太。 The upper surface is covered with a floor plate, the lower surface is supported by a floor beam supported by a rectangular frame-like floor frame, and both ends have a joist made of a metal square steel pipe supported on the floor frame. And the joists are floor joists of a building that are arranged in parallel at regular intervals,
A floor joist of a building, wherein a stiffening portion formed by bending the end portion is provided on the upper wall of both ends of the joist. 前記根太の両端部には、下部を切り取ることにより断面逆Ｕ字状で、且つ、前記床フレームの上面に支持される支持部が形成され、該支持部の内側にはスペーサが配設され、前記根太は、前記スペーサを介して前記床フレームに支持されるとともに、前記支持部及び前記スペーサを貫通する固定部材によって前記床フレームに固定されることを特徴とする請求項２に記載の建物の床根太。 At both ends of the joist, a lower U-shaped cross section is formed by cutting off the lower part, and a support part supported on the upper surface of the floor frame is formed, and a spacer is disposed inside the support part, the joists is supported on the underframe through said spacer, the fixing member penetrating the supporting portion and the spacer of the building according to claim 2, characterized in that it is fixed to the bed frame Floor joists.
JP2004177226A 2004-06-15 2004-06-15 Building floor joists Expired - Fee Related JP4309809B2 (en)

Priority Applications (1)

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JP2004177226A JP4309809B2 (en) 2004-06-15 2004-06-15 Building floor joists

Applications Claiming Priority (1)

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JP2004177226A JP4309809B2 (en) 2004-06-15 2004-06-15 Building floor joists

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JP4309809B2 true JP4309809B2 (en) 2009-08-05

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107386443A (en) * 2017-08-10 2017-11-24 中国二十冶集团有限公司 Kink steel structure module, installation settings and modularization installation method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107386443A (en) * 2017-08-10 2017-11-24 中国二十冶集团有限公司 Kink steel structure module, installation settings and modularization installation method

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