JP2004176441A

JP2004176441A - Floor structure and construction method therefor

Info

Publication number: JP2004176441A
Application number: JP2002345081A
Authority: JP
Inventors: Daisaku Nishimoto; 大策西本
Original assignee: Dow Kakoh KK
Current assignee: Dow Kakoh KK
Priority date: 2002-11-28
Filing date: 2002-11-28
Publication date: 2004-06-24

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor structure in which a synthetic resin foamed board 3 and concrete 5 are used in combination and which structurally facilitates demolition and partial repair. <P>SOLUTION: The top surface of the synthetic resin foamed board 3 is partitioned into a plurality of areas with partition materials 6, and the concrete 5 is preplaced by being infilled into respective areas which are partitioned with the partition materials 6, so that the concrete 5 is precedently made peelable in the respective areas which are partitioned with the partition materials 6. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、例えば断熱性を有する床や嵩上げした床として用いられる、合成樹脂発泡板とコンクリートとを併用した床構造体及びその構築方法に関する。
【０００２】
【従来の技術】
従来、合成樹脂発泡板とコンクリートとを併用した床構造体としては、地盤に割栗の敷設や砂による表面均しなどの下処理を施した床下地上に、予め両面に合成樹脂フィルムを接合した合成樹脂発泡板を敷き並べて、その上にコンクリートを打設した土間床が知られている（例えば特許文献１参照）。
【０００３】
【特許文献１】
特公平５−３９２２３号公報
【０００４】
【発明が解決しようとする課題】
しかしながら、上記従来の床構造体には次のような問題がある。
【０００５】
（１）床構造体を解体するときに、合成樹脂発泡板上に打設された一連のコンクリート層を破砕し、合成樹脂発泡板と分離して搬出しなければならず、手間がかかり、また解体持の騒音などによりリフォームに適さない。
【０００６】
（２）例えばコンクリート層の一部に亀裂を生じた場合などの部分的な補修を行う場合に、補修領域のコンクリート層のみを、下に敷かれている合成樹脂発泡板や合成樹脂フィルムを傷付けないように除去しなければならず、作業が行いにくい。
【０００７】
本発明は、上記従来の問題点に鑑みてなされたもので、合成樹脂発泡板とコンクリートとを併用した床構造体を、解体や部分補修が容易な構造とすることと、当該床構造体の簡便な構築方法を提供することを目的とする。
【０００８】
【課題を解決するための手段】
上記目的のために、本発明の第１は、床下地面上に敷き並べられた複数の合成樹脂発泡板の上面上が仕切り材で複数領域に仕切られており、仕切り材で仕切られた各領域を充填して合成樹脂発泡板上に打設されたコンクリート上に床面が形成されていることを特徴とする床構造体を提供するものである。
【０００９】
上記本発明の第１は、仕切り材が、合成樹脂発泡板の上面上を格子状に仕切っていること、
仕切り材が、断面形状が等脚台形又は二等辺三角形の棒材であること、
仕切り材が、合成樹脂発泡体で構成されていること、
仕切り材の表面にスキン層が形成されていること、
合成樹脂発泡板間の合わせ目を覆って粘着テープが貼着されていること、
敷き並べられた複数の合成樹脂発泡板の上面がカバーシートで覆われていること、
合成樹脂発泡板の上面に、少なくとも一側縁部が合成樹脂発泡板の一側縁部より外方に延出したカバーシートが積層されており、このカバーシートの延出部が隣接する合成樹脂発泡板の上面に被せられていること、
をその好ましい態様として含むものである。
【００１０】
また、本発明の第２は、床下地面上に複数の合成樹脂発泡板を敷き並べ、敷き並べた複数の合成樹脂発泡板の上面上を複数領域に仕切って仕切り材を付設し、この仕切り材で仕切られた各領域を充填して合成樹脂発泡板上にコンクリートを打設し、このコンクリート上に床面を形成することを特徴とする床構造体の構築方法を提供するものである。
【００１１】
上記本発明の第２は、仕切り材の設置前に、敷き並べた合成樹脂発泡板の合わせ目に沿って粘着テープを貼着すること、
床下地面上に複数の合成樹脂発泡板を敷き並べた後、仕切り材の設置前に、敷き並べた合成樹脂発泡板上をカバーシートで覆うこと、
少なくとも一側縁部が合成樹脂発泡板の一側縁部より外方に延出したカバーシートを予め上面に積層した合成樹脂発泡板を用い、この合成樹脂発泡板を床下地面上に敷き並べると共に、カバーシートの延出部を隣接する合成樹脂発泡板の上面に被せること、
をその好ましい態様として含むものである。
【００１２】
【発明の実施の形態】
まず、本発明の第１の例を図１〜５に基づいて説明する。
【００１３】
図１は本発明に係る床構造体の第１の例を示す断面図、図２は仕切り材の配置状態を示す平面図、図３は仕切り材の拡大斜視図、図４は仕切り材の他の例を示す拡大斜視図、図５は本発明の効果の説明図である。
【００１４】
図１において、１は床下地である。床下地１は、既存の建物の床の嵩上げに本発明を用いる場合には既存の床であり、床下空間を有さない土間床の構築に本発明を用いる場合には下地処理（例えば砂利や割繰りの敷設、砂による表面均しなど）を施した地盤である。また、２は建物の壁部である。
【００１５】
下地１上には、嵩上げ用又は断熱用の合成樹脂発泡板３が、隣接する合成樹脂発泡板３の側端面同志を突き合わせて複数枚敷き並べられている。この合成樹脂発泡板３としては、軽量で機械的強度に優れ、耐水性、断熱性に優れたものが好ましく、独立気泡を有する合成樹脂発泡体で構成されていることが好ましい。具体的には、ポリスチレン発泡体、ポリエチレン発泡体、ポリウレタン発泡体などを用いることができるが、機械的強度、耐水性、断熱性に優れることから、特に押出発泡ポリスチレン発泡体（例えばダウ化工社製の「スタイロフォーム」）が好ましい。
【００１６】
合成樹脂発泡板３の少なくとも上面は、後述するコンクリート５の付着を抑制できるよう、スキン層を有することが好ましい。このスキン層とは、未発泡又は他の発泡層に比べて低発泡の層をいう。
【００１７】
上記合成樹脂発泡板３の敷設は、壁部２との間に板状の枠材４を幅方向に立てて介在させて行うことが好ましい。つまり、壁部２に沿って床下地１上に配置された枠材４に囲まれた領域内に合成樹脂発泡板３を敷き詰めるようにすることがことが好ましい。
【００１８】
上記枠材４の幅は合成樹脂発泡板３の厚みより大きく、設置された枠材４の上面は合成樹脂発泡板３上に突出して、敷設された合成樹脂発泡板３の周囲を取り囲んでいる。この枠材４は、後述するコンクリート５を打設する時の周辺枠の役割をなすもので、この枠材４を設けることによって、コンクリート５の壁部２への付着を抑制することができる。
【００１９】
枠材４の材質としては、コンクリート５の付着を抑制できるものであれば特に制限はなく、例えばコンクリートの付着防止処理を施した木の板材などを用いることもできるが、施工性、耐水性、断熱性などに優れる点から、前記合成樹脂発泡板３と同様の合成樹脂発泡体で構成されていることが好ましい。また、合成樹脂発泡体製とする場合、コンクリート５の付着を抑制できるよう、少なくとも合成樹脂発泡板３側の表面はスキン層を有することが好ましい。
【００２０】
前記敷き並べられた複数の合成樹脂発泡板３の上面には、所定の間隔をあけて縦横に仕切り材６が設けられており、この仕切り材６によって、合成樹脂発泡板３の上面上が複数領域に仕切られている。具体的には、図２に示されるように、仕切り材６が合成樹脂発泡板３の上面に格子状に設けられており、合成樹脂発泡板３上をそれぞれ方形の領域に仕切っている。
【００２１】
仕切り材６は、縦横とも長尺の棒材又は板材を用い、交差部に形成した溝を介して組み合わせて格子状に形成することもできるが、図２に示されるように、ほぼ各格子の１辺に対応する長さのものとし、縦横の仕切り材６の交差部を、平面三角形状に形成された仕切り材６の端部同志を突き合わせることで形成することが好ましい。このようにすることによって、仕切り材６の部分的交換が容易となり、部分補修が容易となる。
【００２２】
本例における仕切り材６は、図１及び図３に示されるように、断面等脚台形の棒材となっている。仕切り材６としては、例えば断面正方形又は長方形の棒材又は板材を用いることもできるが、上記断面等脚台形の棒材とすることが好ましい。断面等脚台形の棒材は、合成樹脂発泡板３上へ設置したときの安定性が良いだけでなく、側面が上向きの傾斜面となるので、後述するコンクリート５の剥離作業が行いやすくなる。また、図４に示されるように、断面二等辺三角形の棒材としても、同様の利点を得ることができる。
【００２３】
仕切り材６の材質としては、コンクリート５の付着を抑制できるものであれば特に制限はなく、例えばコンクリートの付着防止処理を施した木の棒材又は板材などを用いることもできるが、施工性、耐水性などに優れる点から、前記合成樹脂発泡板３と同様の合成樹脂発泡体で構成されていることが好ましい。また、合成樹脂発泡体製とする場合、コンクリート５の付着を抑制できるよう、少なくとも両側面はスキン層を有することが好ましい。
【００２４】
上記仕切り材６で複数領域に仕切られた合成樹脂発泡板３上には、敷設された合成樹脂発泡板３を押さえ付けて安定させると共に、必要な床強度を得るためのコンクリート５が、仕切り材６で仕切られた各領域内を充填して打設されている。このコンクリート５の打設は、打設後の表面周縁に凹凸が残らないよう、打設されたコンクリート５の上面が枠材４の上面とほぼ一致した高さとなるように行うことが好ましい。また同様の理由から、前記仕切り材６の高さは、枠材４の合成樹脂発泡板３上への突出高さと同等かややそれよりもやや低くしておくことが好ましい。仕切り材６の高さを上記のように調整しておき、枠材４の上面までコンクリート５を打設すると、コンクリート５の表面と仕切り材６の上面がほぼ同じ高さに揃うか、仕切り材６の上面が薄くコンクリート５で覆われて、コンクリート５の表面が平坦に形成されることになる。
【００２５】
上記コンクリート５の上面は、モルタル７によって均され、このモルタル７上に床材８が設けられている。
【００２６】
上記本例の床構造体は、断熱や嵩上げのために敷設された合成樹脂発泡板３の上に打設されたコンクリート５が、仕切り材６によって複数の領域に仕切られているので、例えばその解体時や補修時に、モルタル７及び床材８を必要に応じて剥がした後、図５に示されるように、仕切り材６で仕切られた１領域単位にコンクリート５を分離して取り出すことができる。従って、敷設された合成樹脂発泡板３上に全面かつ一連にコンクリート５が打設されている場合のように、除去しやすい大きさに切断したり破砕する必要がなく、解体除去や補修作業が行いやすくなる。また、この１領域単位のコンクリート５の剥離除去作業を伴う補修時に周囲の枠材６が損傷しても、前述のように、枠材６をほぼ各格子の１辺に対応する長さのものとし、縦横の仕切り材６の交差部を、平面三角形状に形成された仕切り材６の端部同志を突き合わせることで形成しておけば、損傷した仕切り材６交換して再度コンクリート５を打設し直すことができる。
【００２７】
上記床構造体は、床下地１上に合成樹脂発泡板３と枠材４を敷設した後、又は合成樹脂発泡板３と枠材４を敷設しながら、敷設した合成樹脂発泡板３上に仕切り材６を付設し、合成樹脂発泡板３と枠材４の敷設と仕切り材６の付設を完了した後、合成樹脂発泡板３上にコンクリート５を打設し、養生期間をおいた後、モルタル７による表面均しと床材８の設置を行うことで得ることができる。
【００２８】
合成樹脂発泡板３と枠材４の設置は、設置した合成樹脂発泡板３同志や合成樹脂発泡板３と枠材４間を、例えば粘着テープなどで仮止めしてつなぎ、ずれを防止しながら行うことが好ましい。また、合成樹脂発泡板３上への仕切り材６の付設は、仕切り材６の底面に予め付設しておいた粘着剤や現場で付設した両面テープを用いて粘着することで容易に行うことができる。
【００２９】
次に、図６〜図１０に基づいて、本発明の第２の例〜第４の例について説明する。なお、以下に述べる図６〜図１０において、既に説明した図１〜図５に示される符号と同じ符号は同じ部材又は部位を示す。
【００３０】
図６は、本発明に係る床構造体の第２の例を示す断面図で、基本的には図１に示す第１の例と同様であるが、合成樹脂発泡板３同志の合わせ目と、合成樹脂発泡板３と枠材４間の合わせ目とに沿って粘着テープ９が貼着され、これらの合わせ目が粘着テープ９で覆われたものとなっている。
【００３１】
上記粘着テープ９としては、防水性のテープを用いることが好ましい。このようにすることによって、コンクリート５の打設時に水分が上記合わせ目から漏れ出るのを防止することができ、例えば上階での床の嵩上げ工事時における下の階への水漏れを防止しやすくなる。また、粘着テープ９の貼着を合成樹脂発泡板３を敷き並べつつ行えば、合わせ目の封止と同時に、敷き並べ作業中の合成樹脂発泡板３のずれ防止をも図ることができる。
【００３２】
図７は、本発明に係る床構造体の第３の例を示す断面図で、やはり基本的には図１に示す第１の例と同様であるが、敷き並べられた合成樹脂発泡板３の上面がカバーシート１０で覆われたものとなっている。
【００３３】
上記カバーシート１０としては、コンクリート５の付着を抑制でき、かつ防水性を有するシート又はフィルム状材料が好ましく、例えばポリエチレン、ポリプロピレン、ポリ塩化ビニルなどの合成樹脂フィルム、表面にコンクリート５の付着防止処理を施した防水紙、アルミニウム箔などを用いることができる。
【００３４】
カバーシート１０の壁部２に沿った縁部は、枠材４に沿って立ち上げ、粘着テープ（図示されていない）で止めておくことが好ましい。また、カバーシート１０は、通常、複数枚を合成樹脂発泡板３上に広げて設けられるが、隣接するカバーシート１０の端部は重ね合わせてやはり粘着テープ（図示されていない）などで止めておくことが好ましい。
【００３５】
このように、合成樹脂発泡板３上をカバーシート１０で覆っておくと、カバーシート１０により、コンクリート５の付着防止と防水性の付与を図ることができると同時に、合成樹脂発泡板３を保護を図ることができる。
【００３６】
本第３の例の床構造体は、合成樹脂発泡板３及び枠材４の設置後、仕切り材６の設置前に、敷き並べた合成樹脂発泡板３上にカバーシート１０を広げてこれを覆い、その後カバーシート１０上に仕切り板６を設け、コンクリート５を打設することで得ることができる。
【００３７】
図８は、本発明に係る床構造体の第４の例を示す断面図、図９はこの第４の例における合成樹脂発泡板３の斜視図、図１０は第４の例における合成樹脂発泡板３同志の合わせ目付近の拡大断面図である。
【００３８】
第４の例は、上述の第３の例と同様に、敷き並べた合成樹脂発泡板３上をカバーシート１０で覆ったものであるが、カバーシート１０が予め合成樹脂発泡板３上に積層されたものとなっている。本例におけるカバーシート１０は、図９に明示されるように、各合成樹脂発泡板３毎に積層されているもので、少なくとも一側縁部が合成樹脂発泡板３の一側縁部より外方に延出した延出部１１を構成している。また、図１０に明示されるように、このカバーシート１０の延出部１１が隣接する合成樹脂発泡板３上に被せられている。
【００３９】
このように予めカバーシート１０が積層された合成樹脂発泡板３を用いると、合成樹脂発泡板３上にカバーシート１０を被せる手間を省略することができ、施工性が向上し、工期の短縮を図ることができる。
【００４０】
本例におけるカバーシート１０としては、合成樹脂発泡板３に熱融着によって容易に積層できるよう、例えばポリエチレン、ポリプロピレン、ポリ塩化ビニルなどの合成樹脂フィルムの表面（合成樹脂発泡板３への接合面）に、エチレン−酢酸ビニル共重合体、エチレン−アクリル酸共重合体などのヒートシール性の良好な合成樹脂をコーティング又はラミネートしたものが好ましい。
【００４１】
本例の床構造体は、予め積層されたカバーシート１０の延出部１１を隣接する合成樹脂発泡板３上に被せながら合成樹脂発泡板４を敷設し、その後仕切り材６の付設やコンクリート５の打設などを行うことで得ることができる。延出部１１は、隣接する合成樹脂発泡板３上に被せることで合わせ目を覆って防水性を付与するためのもので、総ての合わせ目を覆いやすくするためには２方向以上に形成されていることが好ましい。また、隣接する合成樹脂発泡板３上に被せた延出部１１の端部を粘着テープ（図示されていない）で止めておくと、防水性を向上させることができると共に、合成樹脂発泡板３の敷設作業中のずれを防止することもできる。
【００４２】
【発明の効果】
本発明は、以上説明したとおりのものであり、本発明の床構造体は、合成樹脂発泡板上に打設されたコンクリートを、仕切り材で仕切られた領域毎に容易に剥離分離することができるので、解体や部分補修が容易であり、解体持の騒音などもなく、リフォームに適しており、また本発明の構築方法によれば、当該床構造体を容易に得ることができるものである。
【図面の簡単な説明】
【図１】本発明に係る床構造体の第１の例を示す断面図である。
【図２】仕切り材のの配置状態を示す平面図である。
【図３】仕切り材の拡大斜視図である。
【図４】仕切り材の他の例を示す拡大斜視図である。
【図５】本発明の効果の説明図である。
【図６】本発明に係る床構造体の第２の例を示す断面図である。
【図７】本発明に係る床構造体の第３の例を示す断面図である。
【図８】本発明に係る床構造体の第４の例を示す断面図である。
【図９】第４の例における合成樹脂発泡板３の斜視図である。
【図１０】第４の例における合成樹脂発泡板３同志の合わせ目付近の拡大断面図である
【符号の説明】
１床下地
２壁部
３合成樹脂発泡板
４枠材
５コンクリート
６仕切り材
７モルタル
８床材
９粘着テープ
１０カバーシート
１１延出部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a floor structure using a synthetic resin foam plate and concrete in combination, which is used as, for example, a floor having heat insulating properties or a raised floor, and a method of constructing the floor structure.
[0002]
[Prior art]
Conventionally, as a floor structure using both a synthetic resin foam board and concrete, a synthetic resin film was previously bonded to both sides on a floor base that had been subjected to pretreatment such as laying split chestnuts on the ground and leveling the surface with sand BACKGROUND ART A clay floor in which synthetic resin foam plates are laid side by side and concrete is cast thereon is known (for example, see Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Publication No. 5-39223
[Problems to be solved by the invention]
However, the conventional floor structure has the following problems.
[0005]
(1) When the floor structure is dismantled, a series of concrete layers cast on the synthetic resin foam board must be crushed, separated from the synthetic resin foam board and carried out, which takes time and effort. Not suitable for renovation due to the noise of dismantling.
[0006]
(2) For example, when performing a partial repair such as a case where a crack is generated in a part of the concrete layer, only the concrete layer in the repair area is damaged by a synthetic resin foam plate or a synthetic resin film laid below. It must be removed so that it is difficult to work.
[0007]
The present invention has been made in view of the above-mentioned conventional problems, and a floor structure using a synthetic resin foam plate and concrete in combination has a structure that can be easily dismantled and partially repaired. It is intended to provide a simple construction method.
[0008]
[Means for Solving the Problems]
To achieve the above object, a first aspect of the present invention is that a plurality of synthetic resin foam boards laid on a floor base surface are divided into a plurality of areas by a partition material on an upper surface, and each area divided by the partition material is divided into a plurality of areas. And a floor surface is formed on concrete cast on a synthetic resin foam board.
[0009]
The first aspect of the present invention is that the partitioning material partitions the upper surface of the synthetic resin foam plate into a lattice.
The partition member is a bar having a cross-sectional shape of an isosceles trapezoid or an isosceles triangle,
That the partition member is made of synthetic resin foam,
That a skin layer is formed on the surface of the partitioning material,
An adhesive tape is stuck over the joint between the synthetic resin foam boards,
The upper surface of the multiple synthetic resin foam boards laid out is covered with a cover sheet,
A cover sheet having at least one side edge extending outward from one side edge of the synthetic resin foam plate is laminated on the top surface of the synthetic resin foam plate, and the extending portion of the cover sheet is adjacent to the synthetic resin. Being covered on the top surface of the foam board,
Is included as a preferable embodiment.
[0010]
A second aspect of the present invention is that a plurality of synthetic resin foam plates are laid out on a floor base surface, and a partition member is provided by dividing an upper surface of the laid-out plurality of synthetic resin foam plates into a plurality of regions. The present invention provides a method for constructing a floor structure, characterized by filling each area partitioned by the above with concrete and casting concrete on a synthetic resin foam plate, and forming a floor surface on the concrete.
[0011]
The second aspect of the present invention is that, prior to the installation of the partition member, an adhesive tape is stuck along the seam of the synthetic resin foam plate laid out,
After laying out a plurality of synthetic resin foam boards on the floor base surface, before installing the partitioning material, covering the laid-out synthetic resin foam boards with a cover sheet,
Using a synthetic resin foam plate in which at least one side edge portion has been previously laminated on the upper surface with a cover sheet extending outward from one side edge portion of the synthetic resin foam plate, and laying the synthetic resin foam plate on the floor base surface and , Covering the extended portion of the cover sheet on the upper surface of the adjacent synthetic resin foam plate,
Is included as a preferable embodiment.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
First, a first example of the present invention will be described with reference to FIGS.
[0013]
FIG. 1 is a sectional view showing a first example of a floor structure according to the present invention, FIG. 2 is a plan view showing an arrangement state of partition members, FIG. 3 is an enlarged perspective view of the partition members, and FIG. FIG. 5 is an explanatory view of the effect of the present invention.
[0014]
In FIG. 1, reference numeral 1 denotes a floor base. The floor substrate 1 is an existing floor when the present invention is used for raising the floor of an existing building, and when the present invention is used for constructing a dirt floor having no underfloor space, a ground treatment (for example, gravel or the like) is performed. (E.g., laying the floor, leveling the surface with sand, etc.). Reference numeral 2 denotes a wall of the building.
[0015]
On the base 1, a plurality of synthetic resin foam plates 3 for raising or heat insulation are laid side by side with the side end surfaces of adjacent synthetic resin foam plates 3 facing each other. The synthetic resin foam plate 3 is preferably lightweight, excellent in mechanical strength, excellent in water resistance and heat insulation, and is preferably made of a synthetic resin foam having closed cells. Specifically, polystyrene foam, polyethylene foam, polyurethane foam and the like can be used. However, extruded foam polystyrene foam (for example, manufactured by Dow Chemical Co., Ltd.) is particularly preferable because of its excellent mechanical strength, water resistance, and heat insulation. “Styrofoam”) is preferred.
[0016]
At least the upper surface of the synthetic resin foam plate 3 preferably has a skin layer so that adhesion of concrete 5 described later can be suppressed. The skin layer refers to a layer that is not foamed or has a lower foaming than other foamed layers.
[0017]
The laying of the synthetic resin foam plate 3 is preferably performed by interposing a plate-shaped frame member 4 in the width direction between the wall portion 2 and the wall portion 2. That is, it is preferable that the synthetic resin foam plate 3 be spread all over the area surrounded by the frame member 4 arranged on the floor base 1 along the wall portion 2.
[0018]
The width of the frame member 4 is larger than the thickness of the synthetic resin foam plate 3, and the upper surface of the installed frame member 4 protrudes above the synthetic resin foam plate 3 and surrounds the laid synthetic resin foam plate 3. . The frame member 4 plays a role of a peripheral frame when the concrete 5 described below is poured. By providing the frame member 4, the adhesion of the concrete 5 to the wall 2 can be suppressed.
[0019]
The material of the frame member 4 is not particularly limited as long as it can suppress the adhesion of the concrete 5. For example, a wooden plate material that has been subjected to a concrete adhesion preventing treatment can be used. It is preferable to be made of the same synthetic resin foam as the synthetic resin foam plate 3 from the viewpoint of excellent heat insulating properties. In the case of using a synthetic resin foam, it is preferable that at least the surface on the synthetic resin foam plate 3 side has a skin layer so that the adhesion of the concrete 5 can be suppressed.
[0020]
On the upper surface of the plurality of synthetic resin foam plates 3 arranged in a row, a partition member 6 is provided vertically and horizontally at a predetermined interval, and the upper surface of the synthetic resin foam plate 3 is formed by a plurality of partitions. It is divided into areas. Specifically, as shown in FIG. 2, partition members 6 are provided in a grid pattern on the upper surface of the synthetic resin foam plate 3, and partition the synthetic resin foam plate 3 into rectangular regions.
[0021]
The partition member 6 can be formed in a lattice shape by using a bar or a plate member that is long in both the vertical and horizontal directions and combined through a groove formed at the intersection, but as shown in FIG. It is preferable that the partition member 6 has a length corresponding to one side, and the intersection of the vertical and horizontal partition members 6 is formed by abutting end portions of the partition member 6 formed in a planar triangular shape. This facilitates partial replacement of the partition member 6, and facilitates partial repair.
[0022]
As shown in FIGS. 1 and 3, the partition member 6 in this example is a bar having a trapezoidal cross section with equal legs. As the partition member 6, for example, a bar or plate having a square or rectangular cross section may be used, but it is preferable to use a bar having a trapezoidal cross section having the same shape. The trapezoidal bar having an equilateral cross section not only has good stability when installed on the synthetic resin foam plate 3, but also has an inclined side surface facing upward, so that the concrete 5 described later can be easily peeled off. Further, as shown in FIG. 4, similar advantages can be obtained by using a bar having an isosceles triangular cross section.
[0023]
The material of the partition member 6 is not particularly limited as long as it can suppress the adhesion of the concrete 5, and for example, a wooden bar or a plate that has been subjected to a concrete adhesion preventing treatment can be used. It is preferable to be made of the same synthetic resin foam as the synthetic resin foam plate 3 in terms of excellent water resistance and the like. When made of a synthetic resin foam, it is preferable that at least both side surfaces have skin layers so that the adhesion of the concrete 5 can be suppressed.
[0024]
On the synthetic resin foam plate 3 divided into a plurality of regions by the partition member 6, concrete 5 for holding down the laid synthetic resin foam plate 3 to stabilize it and obtaining a required floor strength is provided by a partition member. Each area partitioned by 6 is filled and cast. It is preferable that the casting of the concrete 5 is performed so that the upper surface of the cast concrete 5 has a height substantially coincident with the upper surface of the frame material 4 so that no irregularities remain on the peripheral edge of the surface after the casting. For the same reason, it is preferable that the height of the partition member 6 is equal to or slightly lower than the height of the frame member 4 protruding above the synthetic resin foam plate 3. When the height of the partition member 6 is adjusted as described above and the concrete 5 is poured to the upper surface of the frame member 4, it is determined whether the surface of the concrete 5 and the upper surface of the partition member 6 are almost the same height. The upper surface of the concrete 6 is thinly covered with the concrete 5, so that the surface of the concrete 5 is formed flat.
[0025]
The upper surface of the concrete 5 is leveled by a mortar 7, and a floor material 8 is provided on the mortar 7.
[0026]
In the floor structure of the present embodiment, the concrete 5 cast on the synthetic resin foam plate 3 laid for heat insulation and raising the height is partitioned into a plurality of regions by the partition member 6. At the time of disassembly or repair, after the mortar 7 and the floor material 8 are peeled off as necessary, the concrete 5 can be separated and taken out in units of one area partitioned by the partition material 6, as shown in FIG. . Therefore, unlike the case where the concrete 5 is cast all over the laid synthetic resin foam plate 3 in a continuous manner, there is no need to cut or crush the concrete 5 to a size that can be easily removed. Easier to do. In addition, even if the surrounding frame member 6 is damaged during the repair involving the work of peeling and removing the concrete 5 in one area unit, as described above, the frame member 6 has a length substantially corresponding to one side of each lattice. If the intersections of the vertical and horizontal partition members 6 are formed by abutting the ends of the partition members 6 formed in a plane triangular shape, the damaged partition member 6 is replaced and the concrete 5 is struck again. Can be reconfigured.
[0027]
The floor structure is partitioned on the laid synthetic resin foam plate 3 after laying the synthetic resin foam plate 3 and the frame material 4 on the floor substrate 1 or while laying the synthetic resin foam plate 3 and the frame material 4. After the material 6 is attached, the laying of the synthetic resin foam plate 3 and the frame material 4 and the attachment of the partition material 6 are completed, concrete 5 is cast on the synthetic resin foam plate 3 and a curing period is allowed. It can be obtained by leveling the surface by 7 and installing the floor material 8.
[0028]
The synthetic resin foam plate 3 and the frame material 4 are installed by temporarily fixing the synthetic resin foam plate 3 and the synthetic resin foam plate 3 and the frame material 4 together with, for example, an adhesive tape or the like to prevent displacement. It is preferred to do so. In addition, the partition member 6 can be easily attached to the synthetic resin foam plate 3 by using a pressure-sensitive adhesive previously attached to the bottom surface of the partition member 6 or a double-sided tape attached on site to adhere. it can.
[0029]
Next, second to fourth examples of the present invention will be described with reference to FIGS. In FIGS. 6 to 10 described below, the same reference numerals as those shown in FIGS. 1 to 5 indicate the same members or parts.
[0030]
FIG. 6 is a cross-sectional view showing a second example of the floor structure according to the present invention, which is basically the same as the first example shown in FIG. An adhesive tape 9 is adhered along a joint between the synthetic resin foam plate 3 and the frame member 4, and these joints are covered with the adhesive tape 9.
[0031]
It is preferable to use a waterproof tape as the adhesive tape 9. In this way, it is possible to prevent the water from leaking from the seam at the time of placing the concrete 5, and to prevent water leakage to the lower floor at the time of raising the floor on the upper floor, for example. It will be easier. Further, if the adhesive tape 9 is adhered while laying out the synthetic resin foam plates 3, the joints can be sealed, and at the same time, the displacement of the synthetic resin foam plate 3 during the laying operation can be prevented.
[0032]
FIG. 7 is a sectional view showing a third example of the floor structure according to the present invention, which is also basically the same as the first example shown in FIG. Is covered with a cover sheet 10.
[0033]
The cover sheet 10 is preferably a sheet or film-like material that can suppress the adhesion of the concrete 5 and has a waterproof property, for example, a synthetic resin film such as polyethylene, polypropylene, or polyvinyl chloride, and a treatment for preventing the adhesion of the concrete 5 on the surface. Waterproof paper, aluminum foil, or the like can be used.
[0034]
The edge of the cover sheet 10 along the wall 2 is preferably raised along the frame member 4 and stopped with an adhesive tape (not shown). In addition, the cover sheet 10 is usually provided by spreading a plurality of sheets on the synthetic resin foam plate 3, but the ends of the adjacent cover sheets 10 are overlapped and also stopped with an adhesive tape (not shown) or the like. It is preferable to keep it.
[0035]
By covering the synthetic resin foam plate 3 with the cover sheet 10 in this way, the cover sheet 10 can prevent the adhesion of the concrete 5 and impart waterproofness, and at the same time protect the synthetic resin foam plate 3 Can be achieved.
[0036]
In the floor structure of the third example, after the synthetic resin foam plate 3 and the frame member 4 are installed, and before the partition member 6 is installed, the cover sheet 10 is spread on the synthetic resin foam plate 3 that is laid out. It can be obtained by covering, then providing the partition plate 6 on the cover sheet 10 and pouring the concrete 5.
[0037]
8 is a cross-sectional view showing a fourth example of the floor structure according to the present invention, FIG. 9 is a perspective view of the synthetic resin foam plate 3 in the fourth example, and FIG. 10 is a synthetic resin foam in the fourth example. It is an expanded sectional view near the joint of two boards.
[0038]
In the fourth example, similarly to the above-described third example, the synthetic resin foam plate 3 is laid and covered with the cover sheet 10, and the cover sheet 10 is previously laminated on the synthetic resin foam plate 3. It has been done. As clearly shown in FIG. 9, the cover sheet 10 in this example is laminated for each synthetic resin foam plate 3, and at least one side edge portion is outside the one side edge portion of the synthetic resin foam plate 3. The extension portion 11 extends in the direction. As clearly shown in FIG. 10, the extending portion 11 of the cover sheet 10 is covered on the adjacent synthetic resin foam plate 3.
[0039]
When the synthetic resin foam plate 3 on which the cover sheet 10 is previously laminated is used as described above, it is possible to save time and effort for putting the cover sheet 10 on the synthetic resin foam plate 3, thereby improving workability and shortening the construction period. Can be planned.
[0040]
As the cover sheet 10 in this example, for example, a surface of a synthetic resin film such as polyethylene, polypropylene, or polyvinyl chloride (joining surface to the synthetic resin foam plate 3) so that the cover sheet 10 can be easily laminated to the synthetic resin foam plate 3 by heat fusion. ) Is preferably coated or laminated with a synthetic resin having good heat sealability such as an ethylene-vinyl acetate copolymer or an ethylene-acrylic acid copolymer.
[0041]
In the floor structure of this example, the synthetic resin foam plate 4 is laid while the extension portion 11 of the cover sheet 10 laminated in advance is placed on the adjacent synthetic resin foam plate 3, and then the partition member 6 is added and the concrete 5 Can be obtained. The extension portion 11 is provided for covering the joints to provide waterproofness by being placed on the adjacent synthetic resin foam plate 3, and is formed in two or more directions in order to easily cover all the joints. It is preferred that In addition, when the end of the extension portion 11 placed on the adjacent synthetic resin foam plate 3 is stopped with an adhesive tape (not shown), the waterproof property can be improved, and the synthetic resin foam plate 3 can be improved. Can be prevented during the installation work.
[0042]
【The invention's effect】
The present invention is as described above, and the floor structure of the present invention can easily separate and separate concrete cast on a synthetic resin foam plate for each region partitioned by a partition material. Since it is possible, dismantling and partial repair are easy, there is no noise of dismantling, etc., and it is suitable for renovation. According to the construction method of the present invention, the floor structure can be easily obtained. .
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a first example of a floor structure according to the present invention.
FIG. 2 is a plan view showing an arrangement state of partition members.
FIG. 3 is an enlarged perspective view of a partition member.
FIG. 4 is an enlarged perspective view showing another example of a partition member.
FIG. 5 is an explanatory diagram of an effect of the present invention.
FIG. 6 is a cross-sectional view showing a second example of the floor structure according to the present invention.
FIG. 7 is a sectional view showing a third example of the floor structure according to the present invention.
FIG. 8 is a sectional view showing a fourth example of the floor structure according to the present invention.
FIG. 9 is a perspective view of a synthetic resin foam plate 3 in a fourth example.
FIG. 10 is an enlarged cross-sectional view near a joint between synthetic resin foam plates 3 in a fourth example.
DESCRIPTION OF SYMBOLS 1 Floor base 2 Wall part 3 Synthetic resin foam board 4 Frame material 5 Concrete 6 Partition material 7 Mortar 8 Floor material 9 Adhesive tape 10 Cover sheet 11 Extension part

Claims

The upper surface of the plurality of synthetic resin foam boards laid on the floor substrate is divided into a plurality of regions by a partition material, and each region partitioned by the partition material is filled and cast on the synthetic resin foam plate. A floor structure, wherein a floor surface is formed on concrete.

2. The floor structure according to claim 1, wherein the partition member partitions a top surface of the synthetic resin foam plate in a lattice shape. 3.

The floor structure according to claim 1, wherein the partition member is a bar having a cross-sectional shape of an isosceles trapezoid or an isosceles triangle.

The floor structure according to any one of claims 1 to 3, wherein the partition member is formed of a synthetic resin foam.

The floor structure according to claim 4, wherein a skin layer is not formed on a surface of the partition member.

The floor structure according to any one of claims 1 to 5, wherein a skin layer is formed on a surface of the plurality of synthetic resin foam boards laid out.

The floor structure according to any one of claims 1 to 6, wherein an adhesive tape is attached so as to cover joints between the synthetic resin foam plates.

The floor structure according to any one of claims 1 to 7, wherein upper surfaces of the plurality of synthetic resin foam boards laid out are covered with a cover sheet.

A cover sheet having at least one side edge extending outward from one side edge of the synthetic resin foam plate is laminated on the upper surface of the synthetic resin foam plate, and the extending portion of the cover sheet is adjacent to the synthetic resin. The floor structure according to any one of claims 1 to 6, wherein the floor structure is covered on an upper surface of the foam board.

A plurality of synthetic resin foam boards are laid out on the floor base, and the upper surface of the laid out plurality of synthetic resin foam boards is divided into a plurality of areas and a partition material is attached, and each area partitioned by this partition material is filled. A method for constructing a floor structure, wherein concrete is cast on a synthetic resin foam plate and a floor is formed on the concrete.

The method for constructing a floor structure according to claim 10, wherein an adhesive tape is attached along a seam of the synthetic resin foam boards laid out before the partition member is installed.

The floor structure according to claim 10, wherein after laying a plurality of synthetic resin foam plates on the floor substrate and before installing the partition member, the laid synthetic resin foam plates are covered with a cover sheet. How to build.

Using a synthetic resin foam plate in which at least one side edge portion has been previously laminated on the upper surface with a cover sheet extending outward from one side edge of the synthetic resin foam plate, and laying the synthetic resin foam plate on the floor base surface and The method for constructing a floor structure according to claim 10, wherein the extending portion of the cover sheet is placed on the upper surface of the adjacent synthetic resin foam plate.