JP2013231315A - Floor structure, and construction method for the same - Google Patents

Floor structure, and construction method for the same Download PDF

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JP2013231315A
JP2013231315A JP2012104360A JP2012104360A JP2013231315A JP 2013231315 A JP2013231315 A JP 2013231315A JP 2012104360 A JP2012104360 A JP 2012104360A JP 2012104360 A JP2012104360 A JP 2012104360A JP 2013231315 A JP2013231315 A JP 2013231315A
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floor
fixed
plate portion
ceiling
fixing
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JP5758839B2 (en
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Junichi Izumi
潤一 泉
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Mitsui Home Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a floor structure capable of enhancing strength and sound insulating performance, and to provide a construction method for the same.SOLUTION: The floor structure comprises: a plurality of floor joists 2 arranged at intervals from one another; a floor surface material 3 fixed to upper faces 2a of the floor joists 2; ceiling backing members 5 perpendicular to the floor joists 2 and fixed over lower faces 2b of the plurality of floor joists 2; reinforcing members 6 perpendicular to the floor joints 2 and fixed over the lower faces 2b of the plurality of floor joists 2; and ceiling surface materials 4 fixed to the ceiling backing members 5. The ceiling backing members 5 each have a first fixation plate part 11 fixed via a fixing member to the floor joist 2, a second fixation plate part 14 formed approximately parallel to the first fixation plate part 11, where the ceiling surface material 4 is fixed via the fixing member, and a connection plate part 13 elastically deformable and connecting the first fixation plate part 11 and the second fixation plate part 12. Clearances S1 are formed between each of the reinforcing members 6 and the ceiling surface material 4.

Description

本発明は、建物における床構造及び床構造の施工方法に関する。   The present invention relates to a floor structure in a building and a construction method of the floor structure.

従来、住宅の２階の床構造は、遮音性や施工性等に対応して様々な構成のものが知られている。例えば、従来の床構造は、間をあけて配設された複数の床根太と、床根太の上面に固定された床面材と、床根太の下面に固定された天井面材とで構成されている。この床構造のたわみ強度を向上させる場合、床根太の高さを大きくしたり、床根太の本数を増やしたりすることが考えられる。しかし、床根太の高さを大きくすると、建物階高が高くなり斜線制限に当たったりするという問題がある。また、床根太の本数を増やすと材料費が増大するという問題がある。   Conventionally, the floor structure on the second floor of a house is known in various configurations corresponding to sound insulation, workability, and the like. For example, a conventional floor structure is composed of a plurality of floor joists arranged at intervals, a floor surface material fixed to the upper surface of the floor joists, and a ceiling surface material fixed to the lower surface of the floor joists. ing. In order to improve the flexural strength of the floor structure, it is conceivable to increase the height of the floor joists or increase the number of floor joists. However, when the floor joist height is increased, there is a problem that the height of the building floor becomes higher and the oblique line is restricted. Moreover, there is a problem that increasing the number of floor joists increases the material cost.

ここで、図４は従来の住宅の２階の床構造Ａを示す一部破断斜視図である。図４に示すように、床構造Ａは、複数の床根太１０１と、床根太１０１の上面に固定された床面材１０２と、床根太１０１の下面に固定された天井面材１０３と、隣り合う床根太１０１，１０１の間において、床根太１０１に対して直交する方向に配設された複数の補強部材１０４とで構成されている。補強部材１０４が隣り合う床根太１０１，１０１に釘で固定されることにより複数の床根太１０１が一体化され、強度が高まる。また、床構造Ａによれば、階高が高くなることがなく、材料費の増大も抑制される。   Here, FIG. 4 is a partially broken perspective view showing a floor structure A on the second floor of a conventional house. As shown in FIG. 4, the floor structure A includes a plurality of floor joists 101, a floor material 102 fixed to the upper surface of the floor joists 101, and a ceiling surface material 103 fixed to the lower surface of the floor joists 101. Between the matching floor joists 101, 101, a plurality of reinforcing members 104 are arranged in a direction orthogonal to the floor joists 101. By fixing the reinforcing member 104 to the adjacent floor joists 101, 101 with nails, the plurality of floor joists 101 are integrated, and the strength is increased. Further, according to the floor structure A, the floor height does not increase, and an increase in material costs is suppressed.

しかし、床構造Ａでは、床根太１０１の上面に床面材１０２を直接固定するとともに、下面に天井面材１０３を直接固定するため、床面材１０２と天井面材１０３とが共振し、２階の振動が１階に伝達しやすくなる。   However, in the floor structure A, the floor surface material 102 is directly fixed to the upper surface of the floor joist 101 and the ceiling surface material 103 is directly fixed to the lower surface. The vibration of the floor is easily transmitted to the first floor.

一方、図５は、特許文献１に記載された従来の住宅の２階の床構造Ｂを示す斜視図である。床構造Ｂは、間をあけて配設された複数の床根太１１１と、床根太１１１の上面に固定された床面材１１２と、床根太１１１の間の下部に床根太１１１と平行に配設された吊り天井根太１１３と、吊り天井根太１１３に固定された天井面材１１４とで構成されている。床構造Ｂによれば、天井面材１１４が床根太１１１に直接固定されておらず、吊り天井根太１１３で天井面材１１４を吊り下げる構造になっているため、２階の振動が１階に伝達し難くなっている。   On the other hand, FIG. 5 is a perspective view showing a floor structure B on the second floor of a conventional house described in Patent Document 1. FIG. The floor structure B includes a plurality of floor joists 111 arranged at intervals, a floor material 112 fixed to the upper surface of the floor joists 111, and a lower portion between the floor joists 111 in parallel with the floor joists 111. The suspension ceiling joist 113 is provided, and the ceiling surface material 114 is fixed to the suspension ceiling joist 113. According to the floor structure B, the ceiling surface material 114 is not directly fixed to the floor joists 111, and the ceiling surface material 114 is suspended by the suspended ceiling joists 113. It is difficult to communicate.

特開平９−２４２２５１号公報JP-A-9-242251

ここで、床構造Ａに、床構造Ｂの遮音構造を採用すれば、強度及び遮音性能を高めることができるとも考えられる。しかし、床構造Ａには床根太１０１に対して直交する方向に補強部材１０４が配設されるため、床構造Ｂの吊り天井根太１１３を採用することができない。つまり、床構造における強度の向上と遮音性能の向上の両立を図ることが困難になっていた。   Here, if the sound insulation structure of the floor structure B is adopted as the floor structure A, it is considered that the strength and the sound insulation performance can be improved. However, since the reinforcing member 104 is disposed in the floor structure A in a direction orthogonal to the floor joists 101, the suspended ceiling joists 113 of the floor structure B cannot be employed. In other words, it has been difficult to achieve both improvement in strength and sound insulation performance in the floor structure.

本発明は、前記した問題に鑑みて創案されたものであり、強度及び遮音性能を高めることができる床構造及び床構造の施工方法を提供することを課題とする。   The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a floor structure and a construction method of the floor structure that can improve strength and sound insulation performance.

前記課題を解決するため、本発明は、互いに間をあけて配設された複数の床根太と、前記床根太の上面に固定された床面材と、前記床根太に直交し複数の前記床根太の下面に亘って固定された天井下地部材と、前記床根太に直交し複数の前記床根太の下面に亘って固定された補強部材と、前記天井下地部材に固定された天井面材と、を有し、前記天井下地部材は、固定部材を介して前記床根太に固定された第一固定板部と、前記第一固定板部に対して略平行に形成され固定部材を介して前記天井面材が固定された第二固定板部と、弾性変形可能であって、前記第一固定板部と前記第二固定板部とを連結する連結板部と、を有し、前記補強部材と前記天井面材との間に隙間が形成されていることを特徴とする。   In order to solve the above-mentioned problems, the present invention provides a plurality of floor joists disposed at intervals, a floor material fixed to the upper surface of the floor joists, and a plurality of the floors orthogonal to the floor joists. A ceiling base member fixed over the bottom surface of the joists, a reinforcing member orthogonal to the floor joists and fixed over the lower surfaces of the floor joists, and a ceiling surface material fixed to the ceiling base members; The ceiling base member is fixed to the floor joist via a fixing member; and the ceiling base member is formed substantially parallel to the first fixing plate portion and the ceiling via the fixing member. A second fixing plate portion to which a face material is fixed; and a connecting plate portion that is elastically deformable and connects the first fixing plate portion and the second fixing plate portion; and A gap is formed between the ceiling surface material.

かかる構成によれば、複数の床根太の下面に亘って補強部材が固定されることにより、複数の床根太が一体化するため、たわみを抑制することができる。また、天井下地部材の連結板部が弾性変形することにより、床根太に伝達された振動を吸収することができるため、遮音性能を発揮することができる。また、補強部材は床根太の下面において床根太とは直交して固定されるため、補強部材と天井下地部材とを容易に配設することができる。また、補強部材と天井面材とは隙間をあけて配設されているため、床面材の振動が補強部材から天井面材に直接伝達することがない。   According to such a configuration, since the plurality of floor joists are integrated by fixing the reinforcing member over the lower surfaces of the plurality of floor joists, the deflection can be suppressed. Further, since the connecting plate portion of the ceiling base member is elastically deformed, the vibration transmitted to the floor joist can be absorbed, so that the sound insulation performance can be exhibited. Further, since the reinforcing member is fixed orthogonally to the floor joist on the lower surface of the floor joist, the reinforcing member and the ceiling base member can be easily disposed. Further, since the reinforcing member and the ceiling surface material are disposed with a gap therebetween, the vibration of the floor surface material is not directly transmitted from the reinforcing member to the ceiling surface material.

また、前記補強部材は、炭素繊維を含んで構成されていることが好ましい。炭素繊維は引張強度が高いため、床根太のたわみをより抑制することができる。   Moreover, it is preferable that the said reinforcement member is comprised including carbon fiber. Since carbon fiber has high tensile strength, it is possible to further suppress the bending of floor joists.

また、本発明は、互いに間をあけて複数の床根太を配設する床根太配設工程と、前記床根太の上面に床面材を固定する床面材固定工程と、前記床根太に直交するように複数の前記床根太の下面に亘って補強部材を固定する補強部材固定工程と、前記床根太の下面に天井下地部材を介して天井面材を固定する天井面材固定工程と、を含み、前記天井下地部材は、固定部材を介して前記床根太に固定される第一固定板部と、前記第一固定板部に対して略平行に形成され固定部材を介して前記天井面材が固定される第二固定板部と、弾性変形可能であって、前記第一固定板部と前記第二固定板部とを連結する連結板部と、を有し、前記天井面材固定工程では、前記補強部材と前記天井面材との間に隙間が形成されるように、前記第一固定板部と前記床根太とを固定するとともに、前記第二固定板部と前記天井面材とを固定することを特徴とする。   Further, the present invention provides a floor joist arrangement step of arranging a plurality of floor joists spaced apart from each other, a floor surface material fixing step of fixing a floor material to the upper surface of the floor joists, and orthogonal to the floor joists A reinforcing member fixing step for fixing a reinforcing member across the lower surface of the floor joists, and a ceiling surface material fixing step for fixing a ceiling surface material to the lower surface of the floor joists via a ceiling base member. The ceiling base member includes a first fixing plate portion fixed to the floor joist via a fixing member, and the ceiling surface material formed substantially parallel to the first fixing plate portion via the fixing member. A second fixing plate portion to which the first fixing plate portion is fixed, and a connecting plate portion that connects the first fixing plate portion and the second fixing plate portion. Then, the first fixed plate portion and the first fixing plate portion are formed so that a gap is formed between the reinforcing member and the ceiling surface material. With fixing the joist, characterized in that to fix the said roof surface member and the second fixing plate portion.

かかる方法によれば、複数の床根太の下面に亘って補強部材が固定されることにより、複数の床根太が一体化するため、床根太のたわみを抑制することができる。また、天井下地部材の連結板部が弾性変形することにより、床根太に伝達された振動を吸収することができるため、遮音性能を発揮することができる。また、補強部材は床根太の下面において床根太とは直交して固定されるため、補強部材と天井下地部材とを容易に配設することができる。また、補強部材と天井面材とは隙間をあけて配設されているため、床面材の振動が補強部材から天井面材に直接伝達することがない。   According to this method, since the plurality of floor joists are integrated by fixing the reinforcing member over the lower surfaces of the plurality of floor joists, the deflection of the floor joists can be suppressed. Further, since the connecting plate portion of the ceiling base member is elastically deformed, the vibration transmitted to the floor joist can be absorbed, so that the sound insulation performance can be exhibited. Further, since the reinforcing member is fixed orthogonally to the floor joist on the lower surface of the floor joist, the reinforcing member and the ceiling base member can be easily disposed. Further, since the reinforcing member and the ceiling surface material are disposed with a gap therebetween, the vibration of the floor surface material is not directly transmitted from the reinforcing member to the ceiling surface material.

本発明に係る床構造及び床構造の施工方法によれば、強度及び遮音性能を高めることができる。   According to the floor structure and the floor structure construction method of the present invention, the strength and sound insulation performance can be improved.

本実施形態に係る床構造を示す斜視図である。It is a perspective view showing the floor structure concerning this embodiment. 本実施形態に係る天井下地部材を示す斜視図である。It is a perspective view which shows the ceiling base member which concerns on this embodiment. 本実施形態に係る床構造の断面図である。It is sectional drawing of the floor structure concerning this embodiment. 従来の住宅の２階の床構造Ａを示す一部破断斜視図である。It is a partially broken perspective view which shows the floor structure A of the 2nd floor of the conventional house. 特許文献１に記載された従来の住宅の２階の床構造Ｂを示す斜視図である。It is a perspective view which shows the floor structure B of the 2nd floor of the conventional house described in patent document 1. FIG.

以下、本発明の実施形態について、図面を参照して詳細に説明する。図１に示すように、床構造１は、本実施形態では、枠組壁工法で構築された木造２階建て住宅の２階の床に用いる場合を例示する。なお、説明における上下左右前後は図１の矢印に従う。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the floor structure 1 exemplifies a case where the floor structure 1 is used for a floor on the second floor of a wooden two-story house constructed by a frame wall construction method. In the description, the top, bottom, left, and right front and rear follow the arrows in FIG.

床構造１は、複数の床根太２と、床面材３と、床根太２の下に天井下地部材５を介して固定された天井面材４と、複数の補強部材６とで主に構成されている。   The floor structure 1 is mainly composed of a plurality of floor joists 2, a floor surface material 3, a ceiling surface material 4 fixed under the floor joists 2 via a ceiling base member 5, and a plurality of reinforcing members 6. Has been.

床根太２は、図示しない一対の壁組に架設される木製の部材である。床根太２は、一定の間隔をあけて互いに平行となるように複数本配設されている。床根太２の断面形状は、本実施形態では矩形としているが、他の形状であってもよい。   The floor joist 2 is a wooden member constructed on a pair of wall sets (not shown). A plurality of floor joists 2 are arranged so as to be parallel to each other at a predetermined interval. The cross-sectional shape of the floor joist 2 is rectangular in this embodiment, but may be other shapes.

床面材３は、２階の床を構成する面材である。床面材３は、本実施形態では合板を用いている。床面材３は、床根太２の上面２ａに例えば釘等の固定部材で固定されている。   The floor material 3 is a surface material constituting the floor of the second floor. The floor material 3 uses a plywood in this embodiment. The floor material 3 is fixed to the upper surface 2a of the floor joist 2 with a fixing member such as a nail.

天井面材４は、１階の天井を構成する面材である。天井面材４は、本実施形態では石膏ボードを用いている。天井面材４は、床根太２に天井下地部材５を介して固定されている。天井面材４は、本実施形態では２枚設けているが、何枚設けてもよい。   The ceiling face material 4 is a face material constituting the ceiling of the first floor. The ceiling surface material 4 uses a gypsum board in this embodiment. The ceiling surface material 4 is fixed to the floor joist 2 via a ceiling base member 5. Although two ceiling surface materials 4 are provided in this embodiment, any number may be provided.

天井下地部材５は、床根太２に直交し、複数の床根太２の下面２ｂに亘って固定されている。天井下地部材５は、図２に示すように、第一固定板部１１と、第二固定板部１２と、連結板部１３と、立上り部１４とで構成されている。   The ceiling base member 5 is orthogonal to the floor joists 2 and is fixed over the lower surfaces 2 b of the plurality of floor joists 2. As shown in FIG. 2, the ceiling base member 5 includes a first fixed plate portion 11, a second fixed plate portion 12, a connecting plate portion 13, and a rising portion 14.

第一固定板部１１は、板状を呈し一定の幅で左右方向に水平に延設されている。第一固定板部１１は、床根太２の下面２ｂ（図１参照）に固定される部位である。第一固定板部１１には、等間隔で複数のネジ孔１１ａが形成されている。なお、第一固定板部１１にリブを設けたり、端部を折り返したりして剛性を高めてもよい。   The first fixed plate portion 11 has a plate shape and extends horizontally in the left-right direction with a certain width. The first fixed plate portion 11 is a portion that is fixed to the lower surface 2 b (see FIG. 1) of the floor joist 2. A plurality of screw holes 11a are formed in the first fixed plate portion 11 at equal intervals. The first fixing plate portion 11 may be provided with a rib, or the end portion may be folded back to increase the rigidity.

第二固定板部１２は、板状を呈し一定の幅で第一固定板部１１と同等の長さで延設されている。また、第二固定板部１２は、第一固定板部１１と略平行になっている。第二固定板部１２は、天井面材４を固定する部位である。第二固定板部１２の下面は本実施形態では平坦になっているが、例えば、第二固定板部１２の下面に下方に突出する小さな凸を設けて天井面材４に対する滑り止め部を形成してもよい。また、第二固定板部１２の前後方向又は左右方向に沿ってリブを設けて剛性を高めてもよい。   The second fixed plate portion 12 has a plate shape and is extended with a constant width and the same length as the first fixed plate portion 11. The second fixed plate portion 12 is substantially parallel to the first fixed plate portion 11. The second fixed plate portion 12 is a portion for fixing the ceiling surface material 4. Although the lower surface of the second fixed plate portion 12 is flat in the present embodiment, for example, a small protrusion protruding downward is formed on the lower surface of the second fixed plate portion 12 to form a non-slip portion for the ceiling surface material 4. May be. Further, a rib may be provided along the front-rear direction or the left-right direction of the second fixed plate portion 12 to increase the rigidity.

連結板部１３は、板状を呈し、一定の幅で第一固定板部１１と同等の長さで延設されている。また、連結板部１３は、下に向かうほど第一固定板部１１から離間するように傾斜し、第一固定板部１１の後端部と第二固定板部１２の前端部とを連結している。連結板部１３は、弾性変形することにより床根太２の振動を吸収する部位である。   The connecting plate portion 13 has a plate shape and is extended with a constant width and the same length as the first fixed plate portion 11. Further, the connecting plate portion 13 is inclined so as to be separated from the first fixed plate portion 11 as it goes downward, and connects the rear end portion of the first fixed plate portion 11 and the front end portion of the second fixed plate portion 12. ing. The connecting plate portion 13 is a portion that absorbs vibration of the floor joists 2 by elastic deformation.

連結板部１３には、等間隔で複数の長孔１３ａが形成されている。長孔１３ａの大きさによって連結板部１３の開口率を変えることができ、連結板部１３の変形のしやすさを調整することができる。長孔１３ａは、本実施形態では、連結板部１３の上部に設けられているが、他の高さ位置に形成されていてもよい。連結板部１３が弾性変形するのであれば、長孔１３ａは設けなくてもよい。また、連結板部１３は、弾性変形可能であれば第一固定板部１１及び第二固定板部１２に対して垂直になっていてもよい。   A plurality of long holes 13 a are formed in the connecting plate portion 13 at equal intervals. The aperture ratio of the connecting plate portion 13 can be changed depending on the size of the long hole 13a, and the ease of deformation of the connecting plate portion 13 can be adjusted. Although the long hole 13a is provided in the upper part of the connection board part 13 in this embodiment, you may form in other height positions. If the connecting plate portion 13 is elastically deformed, the long hole 13a may not be provided. Further, the connecting plate portion 13 may be perpendicular to the first fixed plate portion 11 and the second fixed plate portion 12 as long as it can be elastically deformed.

立上り部１４は、第二固定板部１２の後端部から立ち上がっている。また、立上り部１４は、一定の高さで、かつ、第二固定板部１２と同等の長さで左右方向に延設されている。立上り部１４は、第一固定板部１１の上面に接する仮想水平線に近接する位置まで延設されている。立上り部１４は、天井下地部材５に天井面材４を留め付ける際に、第二固定板部１２の跳ね上がりを小さくするためのつっかいとして機能する部位である。   The rising portion 14 rises from the rear end portion of the second fixed plate portion 12. Further, the rising portion 14 is extended in the left-right direction at a constant height and the same length as the second fixed plate portion 12. The rising portion 14 is extended to a position close to a virtual horizontal line in contact with the upper surface of the first fixed plate portion 11. The rising portion 14 is a portion that functions as a support for reducing the jumping of the second fixed plate portion 12 when the ceiling surface material 4 is fastened to the ceiling base member 5.

また、立上り部１４は、本実施形態では第一固定板部１１から離間する方向に若干傾斜して立ち上がっている。立上り部１４をこのように傾斜させることで、保管時に複数の天井下地部材５を上下方向に積み重ねることができ、積み重ねた天井下地部材５の全体の高さを小さくすることができる。   In addition, the rising portion 14 rises slightly inclined in the direction away from the first fixed plate portion 11 in the present embodiment. By tilting the rising portion 14 in this way, a plurality of ceiling base members 5 can be stacked in the vertical direction during storage, and the overall height of the stacked ceiling base members 5 can be reduced.

また、立上り部１４には、基端から先端まで立ち上り方向に沿って切り欠かれた複数のスリット１４ａが形成されている。スリット１４ａは、左右方向の隙間が２ｍｍ程度になっている。隣り合うスリット１４ａは、例えば２５０ｍｍ間隔になっている。スリット１４ａの隙間寸法や間隔は適宜設定すればよい。また、スリット１４ａは、立上り部１４、第二固定板部１２及び連結板部１３に連続して設けられていてもよい。   In addition, the rising portion 14 is formed with a plurality of slits 14a cut out along the rising direction from the proximal end to the distal end. The slit 14a has a left-right clearance of about 2 mm. The adjacent slits 14a are, for example, at intervals of 250 mm. What is necessary is just to set suitably the clearance gap dimension and space | interval of the slit 14a. In addition, the slit 14 a may be provided continuously to the rising portion 14, the second fixed plate portion 12, and the connecting plate portion 13.

なお、立上り部１４は、第一固定板部１１に対して垂直に立ち上がっていてもよい。天井下地部材５は、本実施形態では、一定の板厚の鋼板を曲げ加工や穴あけ加工して形成されているが、他の製造方法で形成してもよい。   The rising portion 14 may rise vertically with respect to the first fixed plate portion 11. In the present embodiment, the ceiling base member 5 is formed by bending or punching a steel plate having a certain thickness, but may be formed by another manufacturing method.

図１に戻り、補強部材６は、床根太２に直交し複数の床根太２の下面２ｂに亘って固定されている。補強部材６は、本実施形態では、天井下地部材５と平行に、かつ、隣り合う天井下地部材５の中間に配設されている。補強部材６は、本実施形態では炭素繊維強化プラスチック（ＣＦＲＰ）からなり、板状に形成されている。補強部材６は、本実施形態では、接着剤を介して床根太２に固定されている。   Returning to FIG. 1, the reinforcing member 6 is fixed across the lower surface 2 b of the plurality of floor joists 2 perpendicular to the floor joists 2. In this embodiment, the reinforcing member 6 is disposed in parallel to the ceiling base member 5 and in the middle of the adjacent ceiling base member 5. In this embodiment, the reinforcing member 6 is made of carbon fiber reinforced plastic (CFRP) and is formed in a plate shape. In this embodiment, the reinforcing member 6 is fixed to the floor joist 2 via an adhesive.

なお、補強部材６は、本実施形態では、配設された全ての床根太２に跨って固定されているが、少なくとも２本以上に跨って固定されていればよい。また、補強部材６は、本実施形態では炭素繊維で構成したが、他の材料を用いてもよい。例えば、補強部材６として、帯状の合板や鋼板を用いてもよい。補強部材６は、引張強度の高い材料であることが好ましい。補強部材６として、合板や鋼板を用いた場合は、接着剤以外にもネジや釘等の固定部材を用いて床根太２に補強部材６を固定する場合もある。   In addition, in this embodiment, although the reinforcement member 6 is fixed over all the floor joists 2 arrange | positioned, it should just be fixed over at least 2 or more. The reinforcing member 6 is made of carbon fiber in the present embodiment, but other materials may be used. For example, a belt-like plywood or a steel plate may be used as the reinforcing member 6. The reinforcing member 6 is preferably a material having a high tensile strength. When a plywood or a steel plate is used as the reinforcing member 6, the reinforcing member 6 may be fixed to the floor joist 2 using a fixing member such as a screw or a nail in addition to the adhesive.

次に、本実施形態に係る床構造の施工方法について説明する。本実施形態に係る床構造の施工方法は、床根太配設工程と、床面材固定工程と、補強部材固定工程と、天井面材固定工程とを行う。   Next, the construction method of the floor structure concerning this embodiment is demonstrated. The floor structure construction method according to the present embodiment includes a floor joist arrangement step, a floor surface material fixing step, a reinforcing member fixing step, and a ceiling surface material fixing step.

床根太配設工程では、図１に示すように、図示しない壁組に床根太２の端部を配置しつつ、互いに平行となるように一定の間隔をあけて複数本配設する。   In the floor joist arrangement step, as shown in FIG. 1, a plurality of floor joists 2 are arranged at a predetermined interval so as to be parallel to each other while arranging the ends of the floor joists 2 on a wall set (not shown).

床面材固定工程では、図１に示すように、床根太２の上面２ａに床面材３を釘等の固定部材を用いて固定する。   In the floor material fixing step, the floor material 3 is fixed to the upper surface 2a of the floor joist 2 using a fixing member such as a nail, as shown in FIG.

補強部材固定工程では、図１及び図２に示すように、床根太２と直交するように床根太２の下面２ｂに補強部材６を接着剤で固定する。   In the reinforcing member fixing step, the reinforcing member 6 is fixed to the lower surface 2b of the floor joist 2 with an adhesive so as to be orthogonal to the floor joist 2 as shown in FIGS.

天井面材固定工程では、図１及び図２に示すように、天井下地部材５を介して天井面材４，４を固定する。具体的には図２及び図３に示すように、第一固定板部１１のネジ孔１１ａと床根太２とが対応する位置にビス等の固定部材を打ち込み、床根太２に対して第一固定板部１１を固定する。固定部材を留め付ける留付機具は特に制限されないが、ここではエアーコンプレッサーに接続され圧縮空気を動力源とするインパクトドライバーを用いる。   In the ceiling surface material fixing step, as shown in FIGS. 1 and 2, the ceiling surface materials 4 and 4 are fixed via the ceiling base member 5. Specifically, as shown in FIG. 2 and FIG. 3, a fixing member such as a screw is driven into a position where the screw hole 11 a of the first fixing plate portion 11 and the floor joist 2 correspond to each other. The fixing plate part 11 is fixed. The fastening device for fastening the fixing member is not particularly limited, but here, an impact driver connected to an air compressor and using compressed air as a power source is used.

第一固定板部１１のみを床根太２に固定したとき、床根太２の下面２ｂから立上り部１４の先端までは隙間が形成されている。この隙間は、適宜設定すればよいが、例えば２〜４ｍｍ、より好ましくは３ｍｍになっている。   When only the first fixed plate portion 11 is fixed to the floor joist 2, a gap is formed from the lower surface 2 b of the floor joist 2 to the tip of the rising portion 14. This gap may be set as appropriate, but is, for example, 2 to 4 mm, more preferably 3 mm.

次に、天井面材４の下面側から第二固定板部１２に対応する位置にビス等の固定部材を打ち込み、第二固定板部１２に対して天井面材４，４を固定する。天井面材４，４が固定された後は、図３に示すように、天井面材４と補強部材６との間に隙間Ｓ１が形成されるようにする。また、床根太２の下面２ｂと立上り部１４の先端との間に隙間Ｓ２が形成されるようにする。以上の工程を行うことにより、床構造１が構築される。   Next, a fixing member such as a screw is driven into a position corresponding to the second fixing plate portion 12 from the lower surface side of the ceiling surface material 4, and the ceiling surface materials 4 and 4 are fixed to the second fixing plate portion 12. After the ceiling surface materials 4 and 4 are fixed, a gap S1 is formed between the ceiling surface material 4 and the reinforcing member 6, as shown in FIG. Further, a gap S <b> 2 is formed between the lower surface 2 b of the floor joist 2 and the tip of the rising portion 14. By performing the above steps, the floor structure 1 is constructed.

なお、前記した工程の順番は例示であって各工程が前後してもよい。また、床構造１は、現場で構築してもよいが、工場等で予め構築してプレキャスト化したものを現場で設置してもよい。これにより、品質の向上を図ことができるとともに、現場での作業を省力化することができる。   The order of the steps described above is an example, and each step may be mixed. Moreover, although the floor structure 1 may be constructed on the spot, it may be installed on the spot that has been constructed in advance in a factory or the like and precast. As a result, quality can be improved, and work on site can be saved.

以上説明した床構造１によれば、強度の向上と遮音性能の向上の両立を図ることが可能になる。つまり、複数の床根太２の下面２ｂに亘って補強部材６が固定されることにより、複数の床根太２が一体化するため、床根太２の強度を高めることができる。これにより、床根太２のたわみを小さくすることができる。また、補強部材６を設けることにより、床根太２の強度が向上するため、床根太２の長さを大きくし、支点間距離を離すことができる。   According to the floor structure 1 described above, it is possible to achieve both improvement in strength and improvement in sound insulation performance. That is, since the plurality of floor joists 2 are integrated by fixing the reinforcing member 6 over the lower surfaces 2b of the plurality of floor joists 2, the strength of the floor joists 2 can be increased. Thereby, the deflection of the floor joist 2 can be reduced. Moreover, since the strength of the floor joist 2 is improved by providing the reinforcing member 6, the length of the floor joist 2 can be increased and the distance between the fulcrums can be increased.

また、天井下地部材５の連結板部１３が弾性変形することにより、床根太２に伝達された振動を吸収することができる。仮に、補強部材６と天井面材４とが接触していると、補強部材６を介して１階に振動が伝達する可能性があるが、補強部材６と天井面材４とは隙間Ｓ１をあけて配設されているため、補強部材６の設置によって遮音性能を損なうことがない。また、床根太２の下面２ｂと立上り部１４の先端の間にも隙間Ｓ２が確保されるため、連結板部１３の弾性変形を許容することができる。   Moreover, the vibration transmitted to the floor joist 2 can be absorbed by the elastic deformation of the connecting plate portion 13 of the ceiling base member 5. If the reinforcing member 6 and the ceiling member 4 are in contact with each other, vibration may be transmitted to the first floor via the reinforcing member 6, but the reinforcing member 6 and the ceiling member 4 have a gap S1. Since it is arranged open, the sound insulation performance is not impaired by the installation of the reinforcing member 6. In addition, since the gap S2 is secured between the lower surface 2b of the floor joist 2 and the tip of the rising portion 14, elastic deformation of the connecting plate portion 13 can be allowed.

また、補強部材６は床根太２の下面２ｂに床根太２とは直交して固定されるため、補強部材６と、天井下地部材５とを容易に配設することができる。また、補強部材６は、炭素繊維で構成されているため、床根太２の強度をより高めることができる。   Further, since the reinforcing member 6 is fixed to the lower surface 2b of the floor joist 2 so as to be orthogonal to the floor joist 2, the reinforcing member 6 and the ceiling base member 5 can be easily disposed. Moreover, since the reinforcement member 6 is comprised with the carbon fiber, the intensity | strength of the floor joist 2 can be raised more.

なお、天井下地部材５に立上り部１４が形成されていないと、第二固定板部１２に天井面材４を固定する作業が困難になる。つまり、立上り部１４が形成されていないと、ビス等の固定部材を打ち込む際に、第二固定板部１２が上方に跳ね上がってしまい、所望の位置とはズレた位置に天井面材４が固定されてしまう場合がある。
しかし、本実施形態のように天井下地部材５に立上り部１４が形成されていると、ビス等の固定部材を打ち込んでいる間は、インパクトドライバーの衝撃によって、天井面材４及び第二固定板部１２が上向きの力を受ける。これにより、連結板部１３が弾性変形し、立上り部１４の先端が床根太２の下面２ｂに当接する。よって、第二固定板部１２の変位を小さくすることができるため、所望の位置に固定部材を打ち込むことができる。 In addition, if the rising part 14 is not formed in the ceiling base member 5, the operation | work which fixes the ceiling surface material 4 to the 2nd fixing plate part 12 will become difficult. That is, if the rising portion 14 is not formed, the second fixing plate portion 12 jumps upward when the fixing member such as a screw is driven, and the ceiling surface material 4 is fixed at a position deviated from a desired position. It may be done.
However, when the rising portion 14 is formed on the ceiling base member 5 as in the present embodiment, the ceiling surface material 4 and the second fixing plate are caused by the impact of the impact driver while the fixing member such as a screw is driven. Part 12 receives an upward force. Thereby, the connecting plate portion 13 is elastically deformed, and the leading end of the rising portion 14 comes into contact with the lower surface 2 b of the floor joist 2. Therefore, since the displacement of the second fixing plate portion 12 can be reduced, the fixing member can be driven into a desired position.

また、また、立上り部１４にスリット１４ａを設けることにより、天井下地部材５のねじり剛性が低下するため、天井下地部材５が撓みやすくなる。これにより、連結板部１３が弾性変形しやすくなるため、より振動を吸収することで振動の伝達を低減することができる。   Moreover, since the torsional rigidity of the ceiling base member 5 is reduced by providing the slits 14 a in the rising portion 14, the ceiling base member 5 is easily bent. Thereby, since it becomes easy to elastically deform the connection board part 13, the transmission of a vibration can be reduced by absorbing a vibration more.

以上本発明の実施形態について説明したが、本発明の趣旨に反しない範囲において適宜設計変更が可能である。例えば、天井下地部材５の立上り部１４は必要に応じて適宜形成すればよい。   Although the embodiments of the present invention have been described above, design changes can be made as appropriate without departing from the spirit of the present invention. For example, the rising portion 14 of the ceiling base member 5 may be appropriately formed as necessary.

１ 床構造
２ 床根太
２ａ 上面
２ｂ 下面
３ 床面材
４ 天井面材
５ 天井下地部材
６ 補強部材
１１ 第一固定板部
１２ 第二固定板部
１３ 連結板部
１４ 立上り部
Ｓ１ 隙間
Ｓ２ 隙間 DESCRIPTION OF SYMBOLS 1 Floor structure 2 Floor joist 2a Upper surface 2b Lower surface 3 Floor surface material 4 Ceiling surface material 5 Ceiling base member 6 Reinforcement member 11 First fixed plate portion 12 Second fixed plate portion 13 Connecting plate portion 14 Rising portion S1 gap S2 gap

Claims (3)

互いに間をあけて配設された複数の床根太と、
前記床根太の上面に固定された床面材と、
前記床根太に直交し複数の前記床根太の下面に亘って固定された天井下地部材と、
前記床根太に直交し複数の前記床根太の下面に亘って固定された補強部材と、
前記天井下地部材に固定された天井面材と、を有し、
前記天井下地部材は、
固定部材を介して前記床根太に固定された第一固定板部と、
前記第一固定板部に対して略平行に形成され固定部材を介して前記天井面材が固定された第二固定板部と、
弾性変形可能であって、前記第一固定板部と前記第二固定板部とを連結する連結板部と、を有し、
前記補強部材と前記天井面材との間に隙間が形成されていることを特徴とする床構造。 A plurality of floor joists arranged at intervals,
A floor covering fixed to the upper surface of the floor joist,
A ceiling base member that is orthogonal to the floor joists and is fixed across the lower surfaces of the floor joists, and
A reinforcing member that is orthogonal to the floor joists and fixed across the lower surfaces of the floor joists, and
A ceiling surface material fixed to the ceiling base member,
The ceiling base member is
A first fixed plate portion fixed to the floor joist via a fixing member;
A second fixed plate portion formed substantially parallel to the first fixed plate portion and fixed with the ceiling surface material via a fixing member;
A connecting plate portion that is elastically deformable and connects the first fixed plate portion and the second fixed plate portion;
A floor structure, wherein a gap is formed between the reinforcing member and the ceiling member. 前記補強部材は、炭素繊維を含んで構成されていることを特徴とする請求項１に記載の床構造。   The floor structure according to claim 1, wherein the reinforcing member includes carbon fiber. 互いに間をあけて複数の床根太を配設する床根太配設工程と、
前記床根太の上面に床面材を固定する床面材固定工程と、
前記床根太に直交するように複数の前記床根太の下面に亘って補強部材を固定する補強部材固定工程と、
前記床根太の下面に天井下地部材を介して天井面材を固定する天井面材固定工程と、を含み、
前記天井下地部材は、
固定部材を介して前記床根太に固定される第一固定板部と、
前記第一固定板部に対して略平行に形成され固定部材を介して前記天井面材が固定される第二固定板部と、
弾性変形可能であって、前記第一固定板部と前記第二固定板部とを連結する連結板部と、を有し、
前記天井面材固定工程では、前記補強部材と前記天井面材との間に隙間が形成されるように、前記第一固定板部と前記床根太とを固定するとともに、前記第二固定板部と前記天井面材とを固定することを特徴とする床構造の施工方法。 A floor joist arrangement step of arranging a plurality of floor joists spaced from each other;
A floor surface material fixing step of fixing a floor surface material to the upper surface of the floor joist,
A reinforcing member fixing step of fixing a reinforcing member across the lower surfaces of the floor joists so as to be orthogonal to the floor joists;
A ceiling surface material fixing step of fixing a ceiling surface material to a lower surface of the floor joist via a ceiling base member,
The ceiling base member is
A first fixing plate portion fixed to the floor joist via a fixing member;
A second fixing plate portion that is formed substantially parallel to the first fixing plate portion and to which the ceiling surface material is fixed via a fixing member;
A connecting plate portion that is elastically deformable and connects the first fixed plate portion and the second fixed plate portion;
In the ceiling surface material fixing step, the first fixing plate portion and the floor joist are fixed so that a gap is formed between the reinforcing member and the ceiling surface material, and the second fixing plate portion And a method for constructing a floor structure, wherein the ceiling surface material is fixed.
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CN104612299A (en) * 2014-12-06 2015-05-13 朱赞成 Efficient-sound-insulation wood frame house floor system

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