JP3636510B2

JP3636510B2 - Electromagnetic wave shielding structure of buildings

Info

Publication number: JP3636510B2
Application number: JP22062095A
Authority: JP
Inventors: 伸幸三宅; 寿昭木下; 達也長嶋; 政司浅見; 圭二郎野村
Original assignee: Taisei Corp
Current assignee: Taisei Corp
Priority date: 1995-08-29
Filing date: 1995-08-29
Publication date: 2005-04-06
Anticipated expiration: 2015-08-29
Also published as: JPH0960148A

Description

【０００１】
【発明の属する技術分野】
本発明は、建物内に対して電磁気的に絶縁された電磁波遮蔽空間を構成する建物の電磁波遮蔽構造に関するものである。
【０００２】
【従来の技術】
従来における建物の電磁波遮蔽構造では、例えば、建物内の所定階層部分の空間５０を電磁波遮蔽空間とする場合、図１２に示すように、対象とする空間５０の内側全面を覆うように電磁波遮蔽層を設けることで当該空間５０内を外部から電磁気的に絶縁している。即ち、対象とする空間５０の中に電磁波遮蔽層で閉鎖された別の空間を構成している。なお、図１２中、破線で示されるものが電磁波遮蔽層である。また、５２は上記空間５０を貫通する中間柱を、５３はシャフトをそれぞれ示している。
【０００３】
このとき、上記図１２に示すように、床スラブ５４を挟んだ上層階の空間５０と下層階の空間５１とを共に電磁波遮蔽空間とする場合、従来では、各空間５０，５１の内面側全面にそれぞれ電磁波遮蔽層を配設することで、上記両空間５０，５１内を、それぞれ独立した電磁波遮蔽空間として建物の外部や建物内の他の空間から電磁気的に絶縁していた。
【０００４】
なお、図１３に示すように、床スラブ５４を挟んで隣接する上層階の床部分５０ａ及び下層階の天井部分５１ｂの少なくとも一方に電磁波遮蔽層を設けない場合には、床スラブ５４や中間柱５２等を通って上記電磁波遮蔽空間に電磁波が侵入したり、床スラブ５４や中間柱５２等を通って電磁波遮蔽空間から電磁波が漏洩してしまう。
【０００５】
【発明が解決しようとする課題】
上記のような従来の電磁波遮蔽構造においては、各階層の各空間単位に閉鎖した電磁波遮蔽空間５０，５１を構成するので、床スラブ５４を挟んで連続する上層階と下層階の空間５０，５１を共に建物の外部等から区画された電磁波遮蔽空間とする場合であっても、上記のように、床スラブを挟んで隣接する床部分５０ａと天井部分５１ｂに重複して個々に電磁波遮蔽層を施す必要があるという問題がある。
【０００６】
本発明は、上記のような問題点に着目してなされたもので、床スラブを挟んで配置される建物内の２以上の空間を共に電磁波遮蔽空間とする場合に、上記のような重複した電磁波遮蔽層の配置が不要となる電磁波遮蔽構造を提供することを目的としている。
【０００７】
【課題を解決するための手段】
上記目的を達成するために、本発明の電磁波遮蔽構造は、次の通りである。
【０００８】
ここで、上記垂直部材とは、壁、柱、軸を上下に向けたシャフト等、上下方向に延設される部材を指し、後述の貫通部材を含むものである。
この請求項１に記載した発明においては、上層階の垂直部材に設けた電磁波遮蔽層と下層階の垂直部材に設けた電磁波遮蔽層とを連通させることで、上層階の床部分と下層階の天井部分とに個別に電磁波遮蔽層を設けることなく、上層階の空間及び下層階の空間は、建物の外部や他の部屋から電磁気的に絶縁される。即ち、床スラブを挟んだ上層階の空間と下層階の空間とからなる空間が、外部から電磁気的に閉鎖された一つの電磁波遮蔽空間となる。
【０００９】
すなわち、請求項１に記載した発明の電磁波遮蔽構造は、建物内の空間を空間の内面に沿って配設した電磁波遮蔽層により区画して電磁波遮蔽空間を構成する電磁波遮蔽構造において、
床スラブで画成された上層階の空間と下層階の空間との間を区画する電磁波遮蔽層を設けることなく、上層階の外壁部と下層階の外壁部との間に配置される床スラブの外側を覆い且つ上記上層階の空間を画成する外壁部に設けた電磁波遮蔽層及び下層階の空間を画成する外壁部に設けた電磁波遮蔽層に連通する電磁波遮蔽材を備えることを特徴としている。
【００１０】
この請求項１に記載した発明においては、上層階の外壁部に設けた電磁波遮蔽層と下層階の外壁部に設けた電磁波遮蔽層とを電磁波遮蔽材で連通することで、上層階の床部分と下層階の天井部分とに個別に電磁波遮蔽層を設けなくても、上記上層階及び下層階の電磁波遮蔽空間は、共に建物の外部から電磁的に絶縁され、建物の外部への電磁波の漏洩や外部からの電磁波の侵入が防止される。
【００１１】
このとき、上記上層階の電磁波遮蔽層と下層階の電磁波遮蔽層とを連通する電磁波遮蔽材は、床スラブの外側を覆うように配置されることで、当該電磁波遮蔽材は床スラブを貫通して配置する必要はない。この結果、上記上下階層の電磁波遮蔽層を連通する電磁波遮蔽材を設けても、当該電磁波遮蔽材によって床スラブ端部の強度等が低減する恐れは回避される。
【００１２】
次に、請求項２に記載した発明は、請求項１に記載された構成に対して、上記床スラブを上下に貫通する貫通部材に設けた上層階側の電磁波遮蔽層と下層階側の電磁波遮蔽層とを、床スラブと貫通部材との取合い部を通って連通する連通用電磁波遮蔽材を設けたことを特徴としている。
上記請求項１に記載したようにして、上層階の外壁部と下層階の外壁部との電磁波遮蔽層を連通しても、建物内の空間を上下に貫通する中間柱等を介した電磁波の漏洩や侵入の恐れがあるが、本請求項２の発明では、その貫通部材における上層階部分に設けた電磁波遮蔽層と下層階に設けた電磁波遮蔽層とが連通用電磁波遮蔽層で連通されることで、電磁波遮蔽空間は、上記貫通部材から電磁気的に絶縁される。この結果、上記貫通部材を介しての電磁波の漏洩や侵入が防止される。
【００１３】
次に、請求項３に記載した発明は、請求項２に記載された構成に対して、上記貫通部材は柱部材であると共に、上記連通用電磁波遮蔽材に、床スラブの鉄筋を貫通可能な複数の鉄筋貫通穴を設けたことを特徴としている。
柱部材は床スラブを支持するので、柱部材と床スラブとの取合い部に上記連通用電磁波遮断部材を設けると、その取合い部での柱部材と床スラブの結合が低減する。しかし、本請求項３の発明では、上記連通用電磁波遮蔽材に鉄筋を貫通する鉄筋貫通穴が開設されているので、その鉄筋貫通穴を介して床スラブの鉄筋を柱部材に結合でき、上記のように連通用電磁波遮蔽材を設けても、柱部材と床スラブとの取合い部に所定の強度が確保可能となる。
【００１４】
【発明の実施の形態】
本発明の実施の形態を、図面に基づいて説明する。
本実施の形態を適用する建物１は、各階層の床の平面図を示す図１や、その図１におけるＡ−Ａで切断した側面図である図２に示すような構成となっている。即ち、建物１は、複数の階層から構成され、各階層には、それぞれ一つの空間が設けられている。その建物１内には、上下に貫通する中間柱２やシャフト３が配置されている。
【００１５】
そして、本実施の形態は、建物１の上層の連続する二階層部分Ｂ，Ｃを一つの電磁波遮蔽空間とする一例である。
その電磁波遮蔽空間を構成する上層階Ｂ及び下層階Ｃの空間には、従来と同様に、垂直部材を構成する各壁面に沿って電磁波遮蔽材が施されて電磁波遮蔽層４が設けられている。また、各階層Ｂ，Ｃの空間に配置されて垂直部材及び貫通部材を構成する中間柱２やシャフト３の外面にも電磁波遮蔽材が施されて当該中間柱２やシャフト３周りにも電磁波遮蔽層５，６が形成されている。さらに、下層階Ｃの床に沿って電磁波遮蔽材が施されて当該床部分の電磁波遮蔽層７が形成され、また、上層階Ｂの天井に沿って電磁波遮蔽材が施されて当該天井部分の電磁波遮蔽層８が構成されている。
【００１６】
これによって、上記上層階Ｂ及び下層階Ｃの空間は、床スラブ９部分を除いて電磁気的に閉鎖された空間を構成する。
ここで、上記壁面等に沿って施される電磁波遮蔽材としては、要求されるシールド性能、耐久性、コスト等を考慮して、以下のものを使い分ける。
即ち、スチールパーティションの流用、金属板（鉄板、鋼板、アルミニウム板等）、金属箔（鉄箔、銅箔、鋼箔、アルミニウム箔等）、エキスパンドメタル、パンチングメタル、金網、新素材（金属を被覆した布状，紙状素材等、金属ファイバー含有布状，紙状素材等）、導電性塗料など、その他の導電性物質からなるものを使用する。
【００１７】
次に、床スラブ９を挟んで配置される、上層階Ｂの外壁部１０に設けた電磁波遮蔽層４と下層階Ｃの外壁部１１に設けた電磁波遮蔽層４との連通構造について説明する。
図３に示すように、上層階Ｂの外壁部１０と下層階Ｃの外壁部１１とに挟まれる床スラブ９の外側の面に沿って、鉄板等からなる電磁波遮蔽材１２が設けられている。その電磁波遮蔽材１２の上端部側は、上層階Ｂの外壁下面と対向する床スラブ９上面を覆い、且つ、その先端部が上層階Ｂの外壁部１０に配設された電磁波遮蔽層４の下端部分に連通している。
【００１８】
また、上記床スラブ９を覆う電磁波遮蔽材１２の下端部側は、鉄骨梁１３と上下に対向する床スラブ９の下面側に被着し、当該鉄骨梁１３に連通している。そして、下層階Ｃ側の外壁部１１に配置した電磁波遮蔽層４を上記鉄骨梁１３に連結させておくことで、上記電磁波遮蔽材１２は、鉄骨梁１３を介して下層階Ｃの外壁部１１に設けた電磁波遮蔽層４と連通する。このとき、鉄骨梁１３は導電性物質であるので電磁波遮蔽材の一部とみなすことができる。
【００１９】
なお、図３に示すように、本実施の形態では、床スラブ９を覆う電磁波遮蔽材１２は、上側部材１２ａと下側部材１２ｂとの二つのプレートから構成され、下側部材１２ｂは、床スラブ９内への現場コンクリート打込みの際の型枠も兼ねている。勿論、上記電磁波遮蔽材１２は、一つのプレートから構成してもよいし、３分割以上に分割されて構成されていてもよい。また、上記上側部材１２ａと下側部材１２ｂとは、スラブコンクリート打設後にビス止め、点溶接、全溶接等によって結合させる。
【００２０】
上記床スラブ９を覆う電磁波遮蔽材１２は、図４及び図５に示すように、床スラブ９に沿って横方向に延びることで、当該床スラブ９の外側全面を覆っている。
これによって、上層階Ｂの外壁部１０に設けた電磁波遮蔽層４と下層階Ｃの外壁部１１に設けた電磁波遮蔽層４とが連通され、その間に配される床スラブ９の外側部分からの電磁波の漏洩や侵入が防止される。
【００２１】
しかも、上記電磁波遮蔽材１２は床スラブ９の端部を貫通していないので、上下層の電磁波遮蔽層４を連通するために当該電磁波遮蔽材１２を設けても、床スラブ９端部の強度を低減させることはない。
ここで、図４及び図５における１４は、外壁部１０側に配置される柱部材を示している。この柱部材１４の床スラブ９との取合い部には、後述する連通用電磁波遮蔽材１５が配設され、その連通用電磁波遮蔽材１５と上記床スラブ９を覆う電磁波遮蔽材１２の端部とは連結されている。これによって、外壁部１０側に配置される柱部材１４部分及び当該柱部材１４部分と床スラブ９との取合い部分も電磁気的に閉鎖されることになる。
【００２２】
また、カーテンウォール１９を取り付けるために床スラブ９の外側上面に設けられたファスナ１６部分では、図６に示すように、上記床スラブ９を覆う電磁波遮蔽材１２は切り欠かれて、その部分の床スラブ９を覆わないが、上記ファスナ１６は導電性物質であり、当該ファスナ１６が電磁波遮蔽材１２の一部を構成するので問題はない。
【００２３】
ここで、上記実施の形態では、床スラブ９を覆う電磁波遮蔽材１２は、床スラブ９の外側の面に沿って被着するように配設されているが、これに限定されるものではない。要は床スラブ９の外側を覆うように配置されればよいので、上記床スラブ９との間に所定の隙間があいていても構わない。
ここで、上記床スラブを覆う電磁波遮蔽材１２としては、各種の導電性部材が使用可能であるが、施工後のメンテナンスが困難なため、所定の耐久性を備えた材料によって所定の厚さを確保する必要がある。従って、上記電磁波遮蔽材１２は、例えば、鉄板、鋼板、アルミニウム板等の金属板や、エキスパンドメタル、パンチングメタル（目が細かく厚みのあるもの）を使用するとよい。但し、エキスパンドメタルよりも鉄板の方がシールド性能や耐久性等の観点上有利である。
【００２４】
次に、貫通部材である柱部材２の上層階部分２ａの電磁波遮蔽層５と下層階部分２ｂの電磁波遮蔽層５とを連通用電磁波遮蔽材２０で連通する構造について説明する。
上述したように、柱部材２の下層階側部分２ｂ及び上層階側部分２ａには、それぞれ電磁波遮蔽材が貼り付けられることで、各階層Ｂ，Ｃでの柱周りの電磁波遮蔽層５が形成されている。また、図７に示すように、梁接合部での柱周りには電磁波遮蔽材としての鉄板２１が巻き付けられている。なお、上記電磁波遮蔽材としては鉄板２１に限定されない。例えば、鋼板、アルミニウム板等の金属板や、エキスパンドメタル、パンチングメタル（目が細かく厚みのあるもの）を使用するとよい。但し、エキスパンドメタルよりも鉄板２１の方がシールド性能や耐久性等の観点上有利である。
【００２５】
そして、上記図７に示すように、床スラブ９と柱部材２との取合い部の柱周りには、その柱周りに沿って連通用電磁波遮蔽材２０が配置されている。この連通用電磁波遮蔽材２０は、鉄板によって形成され、上記図７や図８（ａ）に示すように、柱周りに沿って配置される本体部分２０ａと、その本体部分２０ａの上端部及び下端部にそれぞれ設けられる外向きフランジ２０ｂ，２０ｃとから構成されている。
【００２６】
上記本体部分２０ａは、柱周りに沿ってその柱周りを覆うように配置されて、横断面コ字形状をしている。この本体部分２０ａには、床スラブ９の主筋等の鉄筋２５を貫通可能な鉄筋貫通穴２０ｄが複数個，厚さ方向に開設されている。
ここで、上記図７においては、一個の連通用電磁波遮蔽材２０によって、柱周りの半分だけを覆った状態を示しているが、残りの半分にも別の連通用電磁波遮蔽材２０が配置されている。この結果、床スラブ９との取合い部における柱周りの全周が２個の連通用電磁波遮蔽材２０で囲まれている。
【００２７】
なお、上述の外壁部１０に配置される柱部材１４に対しては、図４及び図５に示すように、電磁波遮蔽空間を構成する建物１の内側を向く側だけにあれば良いので、一個の連通用電磁波遮蔽材１５を設けるだけでよい。
また、上記連通用電磁波遮蔽材２０の下端部側の外向きフランジ２０ｃは、鉄骨梁１３及び鉄板２１を介して、下層階Ｃの柱部材２に貼り付けた電磁波遮蔽層５に連通している。また、連通用電磁波遮蔽材２０の上端部側の外向きフランジ２０ｂは、上層階Ｂの柱部材２に貼り付けた電磁波遮蔽層５に連通している。
【００２８】
なお、上記外向きフランジ２０ｂ，２０ｃは、連通用電磁波遮蔽材２０と各電磁波遮蔽層５との十分な接触面積を確保して確実に各電磁波遮蔽層４と連通させる役割と、床スラブ９との結合を高める役割を有している。
これによって、柱部材２に形成された下層階側２ｂの電磁波遮蔽層５と上層階側２ａの電磁波遮蔽層５とは上記床スラブ９との取合い部に配置される連通用電磁波遮蔽材２０を介して連通される。この結果、上層階Ｂ及び下層階Ｃの空間は、柱部材２から電磁気的に絶縁され、上層階Ｂの床部分及び下層階Ｃの天井部分に電磁波遮蔽層を設けなくても、上記柱部材２からの電磁波の漏洩や侵入が防止される。
【００２９】
また、床スラブ９に配筋される鉄筋２５を、図８（ｂ）に示すように、上記連通用電磁波遮蔽材２０に設けた鉄筋貫通穴２０ｄを貫通させて柱部材２側に配筋し当該柱部材２部分に固定することで、上記床スラブ９は柱部材２に対して従来と略同様な強度で結合される。このように柱部材２と床スラブ９との取合い部に連通用電磁波遮蔽材２０を配置しても問題はない。
【００３０】
なお、上記柱と床スラブとの取合い部の施工は、例えば、床スラブ９用の型枠及び柱部分の型枠を配設し、その後に、柱周りに上記連通用電磁波遮蔽材２０を配置すると共に床スラブ９の鉄筋２５を上記のように連通用電磁波遮蔽材２０の鉄筋貫通穴２０ｄを貫通されて配置する。そして、現場打ちコンクリートを打設して床スラブ９及び床スラブ９に接合される柱部分を構築する。
【００３１】
同様に、床スラブ９を貫通するシャフト３における床スラブ９のとの取合い部においても、上記と同様な形状の連通用電磁波遮蔽材２６を、上記床スラブ９との取合い部に配置するシャフト３の外周面部分に配置し、その連通用電磁波遮蔽材２６を介して、シャフト３周りの下層階Ｃ側の電磁波遮蔽層６と上層階Ｂの電磁波遮蔽層６とを連通させる。これによって、上層階Ｂ及び下層階Ｃの空間は、シャフト３から電磁気的に絶縁され、上層階Ｂの床部分及び下層階Ｃの天井部分に電磁波遮蔽層を設けなくても、上記シャフト３からも電磁波の漏洩や侵入が防止される。
【００３２】
ここで、上記シャフト３は床スラブ９を支持しないので、連通用電磁波遮蔽材２６に鉄筋貫通穴は不要である。
なお、上記連通用電磁波遮蔽材２０，２６は、取り付けられる柱部材２やシャフト３が横断面四角形形状をしているために、横断面コ字形状となっているが、上記柱部材２の横断面が円形等であれば、その形状に合わせて横断面円弧形状等に構成する。
【００３３】
また、上記連通用電磁波遮蔽材２０，２６においては、一対の外向きフランジを有しているが、当該外向きフランジはなくても構わない。例えば、図１０（ａ）に示すように、縦断面Ｌ字状に設定してもよいし、図１０（ｂ）に示すように、外向きフランジを省略してもよい。
さらに、上記連通用電磁波遮蔽材２０，２６を、図１１に示すように、上下に二分割された部材によって構成して、スラブのコンクリート天端に合わせて上側位置を調整可能に構成してもよい。
【００３４】
また、上記連通用電磁波遮蔽材２０の配置位置は、上記実施の形態で示す位置よりも柱部材２内に埋め込むように配置されてもよいし、上記実施の形態で示す位置よりも床スラブ９側に張り出して配置させてもよい。連通用電磁波遮蔽材２０の上端部及び下端部がそれぞれ対応する電磁波遮蔽層４に電磁気的に隙間無く連通していればよい。
【００３５】
ここで、上記連通用電磁波遮蔽材２０としては、各種の導電性部材が使用可能であるが、施工後のメンテナンスが困難なため、所定の耐久性を備えた材料によって所定の厚さを確保する必要がある。従って、上記連通用電磁波遮蔽材２０は、例えば、鉄板、鋼板、アルミニウム板等の金属板や、エキスパンドメタル、パンチングメタル、金網（目が細かく厚みのあるもの）などを使用するとよい。但し、エキスパンドメタルよりも鉄板の方がシールド性能や耐久性等の観点上有利である。
【００３６】
上記のように構成することで、上層階Ｂの空間と下層階Ｃの空間とは、建物１の外部や建物１内の他の空間から電磁気的に絶縁され、もって、上記上層階Ｂの空間と下層階Ｃの空間とによって一つの区画された電磁波遮蔽空間が構成されることとなる。
即ち、上層階Ｂの床部分及び下層階Ｃの天井部分にそれぞれ重複して電磁波遮蔽層４を設けることなく、上層階Ｂの空間と下層階Ｃの空間とが電磁気的に閉鎖した空間を構成する。
【００３７】
さらに、上層階Ｂの空間と下層階Ｃの空間とを独立した電磁波遮蔽空間として使用する場合にも、例えば、上層階Ｂの床部分にのみ電磁波遮蔽層４を設けることで、上層階Ｂの空間と下層階Ｃの空間とが電磁気的に絶縁され、個々に独立した電磁波遮蔽空間を構成可能となる。即ち、従来のように床スラブ９を挟んで設けられる床部分と天井部分に重複して電磁波遮蔽層を設ける必要はない。
【００３８】
なお、上記実施の形態では、一つの床スラブ９を挟んだ上層階Ｂと下層階Ｃの二つの空間を一つの電磁波遮蔽空間に区間する例で説明しているが、これに限定されるものではない。例えば、上下に重なる３階層分を一つの電磁波遮蔽空間に区画したり、建物１を構成する全空間を一つの電磁波遮蔽空間となるように、各床スラブ９を挟んで上下に配置される空間の垂直部材の電磁波遮蔽層４間を連通させてもよい。
【００３９】
次に、第２の実施の形態について説明する。上記実施の形態と同様な部材には同一の符号を付して説明する。
この第２の実施の形態の形態では、各階の床スラブ９を構築する際に、デッキプレート３０を床型枠として使用して各床スラブ９を構築する。これによって、上記デッキプレート３０は、各階の天井部の電磁波遮蔽層を構成する。
【００４０】
他の構成は、上記第１の実施の形態と同様である。
但し、床スラブ９の外側を覆うように配設された電磁波遮蔽材１２や連通用電磁波遮蔽材２０は、図１４に示すように、下層階Ｃの天井部の電磁波遮蔽層を構成する上記デッキプレート３０に連通させておく。
これによって、上層階Ｂの床部に電磁波遮蔽層を設けなくても、上記デッキプレート３０を利用して、上層階Ｂの空間が電磁気的に閉鎖された電磁波遮蔽空間となる。このように、本実施の形態では、上記デッキプレート３０は天井部の電磁波遮蔽層として流用されると共に、床部に別途、電磁波遮蔽層を施工しなくても電磁気的に閉鎖された電磁波遮蔽空間を構築することができる。
【００４１】
ここで、本実施の形態を採用しない従来の方法で電磁波遮蔽空間を構築する場合には、上記のように床型枠としてデッキプレート３０を使用して床スラブ９を構築しても、図１５に示すように、上記デッキプレート３０は天井部の電磁波遮蔽層とはなるが床部の電磁波遮蔽層とはならないので、別途、床部に電磁波遮蔽層６０を施工する必要がある。
【００４２】
【発明の効果】
以上説明してきたように、本発明の建物の電磁波遮蔽構造では、床スラブで画成される上下の空間が一つの電磁波遮蔽空間を構成する。この結果、従来のように上層階側の床部分及び下層階側の天井部分に重複して電磁波遮蔽層を設けなくても、建物の外側や建物内の他の空間から電磁気的に絶縁された電磁波遮蔽空間を構成可能となるという効果がある。
【００４３】
そして、上記上下層の空間を独立した電磁波遮蔽空間にする場合でも、上層階側の床部分か下層階側の天井部分のいずれか一方にのみ電磁波遮蔽層を設けるだけで、床スラブを挟んだ上層階側と下層階側とが電磁気的に絶縁し、独立した個別の電磁波遮蔽空間とすることができるという効果がある。
このとき、請求項１に記載した発明を採用すると、上層階の外壁部及び下層階の外壁部の各電磁波遮蔽層を床スラブの外側を介して連通しているので、上記上層階の外壁部及び下層階の外壁部の各電磁波遮蔽層を連通する電磁波遮蔽材は、床スラブを貫通することが防止される。これによって、上層階の外壁部及び下層階の外壁部の各電磁波遮蔽層を連通しても、床スラブ端部の強度などを低下させる恐れがないという効果がある。
【００４４】
また、上記のように上下層の外壁部の電磁波遮蔽層を連通しても、中間柱やシャフト等の貫通部材があるとその部分を介して電磁波が漏洩したり電磁波が侵入したりするが、請求項２に記載した発明を採用することで、電磁波遮蔽空間は、上記貫通部材からも電磁的に絶縁されて、上下層を連通して構成した電磁波遮蔽空間は、完全に外部と電気的に絶縁されるという効果がある。
【００４５】
このとき、連通用電磁波遮蔽材は、貫通部材と床スラブとの取合い部を通るが、貫通部材が床スラブを支持する柱部材の場合には、請求項３に記載した発明を採用することで、上記のように上下層の貫通部材周りの電磁波遮蔽層間を連通用電磁波遮蔽材で連通しても、柱部材と床スラブとの取合い部に所定の強度が確保されるという効果がある。即ち、柱部材と床スラブとの取合い部に所定の強度を確保しつつ、上下層の柱部材周りの電磁波遮蔽層を連通可能となる。
【図面の簡単な説明】
【図１】本発明の実施の形態に係る電磁波遮蔽空間を構成する各階層の平面図である。
【図２】本発明の実施の形態に係る電磁波遮蔽空間を示す図１におけるＡ−Ａでの断面図である。
【図３】本発明の実施の形態に係る上下層階の外壁部に設けた電磁波遮蔽層の連通状態を示す側面図である。
【図４】本発明の実施の形態に係る床スラブを覆う電磁波遮蔽材と外壁部に配置された柱部材位置との取合いを示す斜視図である。
【図５】本発明の実施の形態に係る床スラブを覆う電磁波遮蔽材と外壁部に配置された柱部材位置との取合いを示す図である。
【図６】本発明の実施の形態に係るカーテンウォール用ファスナ取付け部での電磁波遮蔽材の配置を示す図である。
【図７】本発明の実施の形態に係る柱部材と床スラブとの取合い部に配置される連通用電磁波遮蔽材を示す図である。
【図８】本発明の実施の形態に係る連通用電磁波遮蔽材を示す図であり、（ａ）は、その斜視図を、（ｂ）はその一部の拡大図をそれぞれ示している。
【図９】本発明の実施の形態に係るシャフトと床スラブとの取合い部に配置される連通用電磁波遮蔽材を示す図である。
【図１０】本発明の実施の形態に係る別例の連通用電磁波遮蔽材を示す別の図であり、（ａ）は、断面Ｌ字状とした場合の断面図を、（ｂ）はフランジを省略した場合の断面図をそれぞれ示している。
【図１１】本発明の実施の形態に係る別例の連通用電磁波遮蔽材を示す断面図である。
【図１２】従来の建物における電磁波遮蔽構造を示す図である。
【図１３】従来の建物における電磁波遮蔽構造における重複する電磁波遮蔽層が無い場合を示す図である。
【図１４】本発明の第２の実施の形態に係る電磁波遮蔽空間を示す断面図である。
【図１５】従来の電磁波遮蔽空間を示す断面図である。
【符号の説明】
１建物
２柱部材（中間柱）
３シャフト
４，５，６，７，８
電磁波遮蔽層
９床スラブ
１０，１１外壁部
１２電磁波遮蔽材
２０連通用電磁波遮蔽材
２０ｄ鉄筋貫通穴[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electromagnetic wave shielding structure for a building that constitutes an electromagnetic wave shielding space that is electromagnetically insulated from the inside of the building.
[0002]
[Prior art]
In the conventional electromagnetic wave shielding structure of a building, for example, when the space 50 of a predetermined layer portion in the building is an electromagnetic wave shielding space, an electromagnetic wave shielding layer is provided so as to cover the entire inner surface of the target space 50 as shown in FIG. By providing this, the inside of the space 50 is electromagnetically insulated from the outside. That is, another space closed by the electromagnetic wave shielding layer is formed in the target space 50. In addition, what is shown with a broken line in FIG. 12 is an electromagnetic wave shielding layer. Reference numeral 52 denotes an intermediate column penetrating the space 50, and 53 denotes a shaft.
[0003]
At this time, as shown in FIG. 12, when both the upper floor space 50 and the lower floor space 51 sandwiching the floor slab 54 are electromagnetic shielding spaces, conventionally, the entire inner surface side of each space 50, 51 is used. By arranging the electromagnetic shielding layers respectively, the spaces 50 and 51 are electromagnetically insulated from the outside of the building and other spaces in the building as independent electromagnetic shielding spaces.
[0004]
As shown in FIG. 13, when an electromagnetic wave shielding layer is not provided on at least one of the floor portion 50a on the upper floor and the ceiling portion 51b on the lower floor adjacent to each other with the floor slab 54 interposed therebetween, The electromagnetic wave enters the electromagnetic wave shielding space through 52 or the like, or the electromagnetic wave leaks from the electromagnetic wave shielding space through the floor slab 54 or the intermediate column 52 or the like.
[0005]
[Problems to be solved by the invention]
In the conventional electromagnetic wave shielding structure as described above, since the electromagnetic wave shielding spaces 50 and 51 closed in each space unit of each layer are configured, the upper and lower floor spaces 50 and 51 continuous with the floor slab 54 interposed therebetween. Even when the electromagnetic wave shielding space is divided from the outside of the building or the like, as described above, the electromagnetic wave shielding layers are individually overlapped with the floor portion 50a and the ceiling portion 51b adjacent to each other with the floor slab interposed therebetween. There is a problem that it is necessary to apply.
[0006]
The present invention has been made by paying attention to the above-described problems. When two or more spaces in a building arranged with a floor slab sandwiched between them are both electromagnetic wave shielding spaces, the above-described duplication is made. An object of the present invention is to provide an electromagnetic wave shielding structure that eliminates the need for an electromagnetic wave shielding layer.
[0007]
[Means for Solving the Problems]
To achieve the above object, wave shielding structure electrodeposition of the present invention is as follows.
[0008]
Here, the vertical member refers to a member extending in the vertical direction, such as a wall, a column, or a shaft whose axis is directed up and down, and includes a penetrating member described later.
In the first aspect of the invention, the electromagnetic wave shielding layer provided on the upper member of the upper floor and the electromagnetic wave shielding layer provided on the lower member of the lower floor are connected to each other so that the floor portion of the upper floor and the lower floor of the lower floor are communicated. The space on the upper floor and the space on the lower floor are electromagnetically insulated from the outside of the building and other rooms without providing an electromagnetic shielding layer separately on the ceiling portion. That is, the space composed of the upper floor space and the lower floor space sandwiching the floor slab becomes one electromagnetic wave shielding space electromagnetically closed from the outside.
[0009]
That is, the electromagnetic wave shielding structure of the invention described in claim 1 is an electromagnetic wave shielding structure in which a space in a building is partitioned by an electromagnetic wave shielding layer disposed along the inner surface of the space to constitute an electromagnetic wave shielding space.
Floor slabs placed between the outer wall of the upper floor and the outer wall of the lower floor without providing an electromagnetic shielding layer that partitions the space between the upper floor and the lower floor, which is defined by the floor slab An electromagnetic wave shielding layer that covers the outside of the upper wall and that is provided on the outer wall portion that defines the space on the upper floor, and an electromagnetic wave shielding material that communicates with the electromagnetic wave shielding layer that is provided on the outer wall portion that defines the space on the lower floor. It is said.
[0010]
In the invention described in claim 1 , the electromagnetic wave shielding layer provided on the outer wall portion of the upper floor and the electromagnetic wave shielding layer provided on the outer wall portion of the lower floor are communicated with each other by an electromagnetic wave shielding material, so that the floor portion of the upper floor The electromagnetic shielding space on the upper and lower floors is both electromagnetically insulated from the outside of the building without electromagnetic wave shielding layers being separately provided on the ceiling of the lower floor and the electromagnetic wave leakage to the outside of the building. And electromagnetic waves from outside are prevented.
[0011]
At this time, the electromagnetic shielding material that communicates the electromagnetic shielding layer on the upper floor and the electromagnetic shielding layer on the lower floor is disposed so as to cover the outside of the floor slab, so that the electromagnetic shielding material penetrates the floor slab. There is no need to place them. As a result, even if an electromagnetic wave shielding material that communicates with the upper and lower electromagnetic wave shielding layers is provided, the possibility that the strength of the floor slab edge is reduced by the electromagnetic wave shielding material is avoided.
[0012]
Next, the invention described in claim 2 is an electromagnetic wave shielding layer on the upper floor side and an electromagnetic wave on the lower floor side provided in a penetrating member penetrating the floor slab vertically with respect to the configuration described in claim 1. An electromagnetic wave shielding material for communication is provided, which communicates the shielding layer with the floor slab and the penetrating member through the joint portion.
As described in the claim 1, also communicates an electromagnetic wave shielding layer of the upper floors of the outer wall and the lower floor of the outer wall, the electromagnetic waves through the studs or the like in passing through the space in the building in the vertical Although there is a risk of leakage or intrusion, in the invention of claim 2 , the electromagnetic wave shielding layer provided on the upper floor portion of the penetrating member and the electromagnetic wave shielding layer provided on the lower floor are communicated with each other by the electromagnetic wave shielding layer for communication. Thus, the electromagnetic shielding space is electromagnetically insulated from the penetrating member. As a result, leakage or intrusion of electromagnetic waves through the penetrating member is prevented.
[0013]
Next, the invention described in claim 3 is the configuration described in claim 2 , wherein the penetrating member is a column member and can penetrate the reinforcing bar of the floor slab into the communicating electromagnetic wave shielding material. A plurality of reinforcing bar through holes are provided.
Since the column member supports the floor slab, when the electromagnetic wave shielding member for communication is provided at the joint between the column member and the floor slab, the coupling between the column member and the floor slab at the joint is reduced. However, in the invention of claim 3 , since the reinforcing bar through hole penetrating the reinforcing bar is established in the electromagnetic wave shielding material for communication, the reinforcing bar of the floor slab can be coupled to the column member through the reinforcing bar through hole, Even if the electromagnetic wave shielding material for communication is provided as described above, a predetermined strength can be secured at the joint portion between the column member and the floor slab.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
The building 1 to which the present embodiment is applied has a configuration as shown in FIG. 1 showing a plan view of a floor of each level and FIG. 2 which is a side view cut along AA in FIG. That is, the building 1 is composed of a plurality of levels, and each level is provided with one space. In the building 1, an intermediate pillar 2 and a shaft 3 penetrating vertically are arranged.
[0015]
The present embodiment is an example in which two consecutive layered portions B and C on the upper layer of the building 1 are used as one electromagnetic wave shielding space.
In the space of the upper floor B and the lower floor C constituting the electromagnetic wave shielding space, an electromagnetic wave shielding layer 4 is provided by applying an electromagnetic wave shielding material along each wall surface constituting the vertical member, as in the past. . Further, an electromagnetic shielding material is also applied to the outer surface of the intermediate column 2 and the shaft 3 which are arranged in the spaces of the respective layers B and C and constitute the vertical member and the penetrating member, and the electromagnetic column is also shielded around the intermediate column 2 and the shaft 3. Layers 5 and 6 are formed. Further, an electromagnetic shielding material is applied along the floor of the lower floor C to form the electromagnetic shielding layer 7 of the floor portion, and an electromagnetic shielding material is applied along the ceiling of the upper floor B to An electromagnetic wave shielding layer 8 is configured.
[0016]
As a result, the space of the upper floor B and the lower floor C constitutes an electromagnetically closed space except for the floor slab 9 portion.
Here, as the electromagnetic wave shielding material applied along the wall surface or the like, the following are properly used in consideration of required shielding performance, durability, cost, and the like.
That is, diversion of steel partition, metal plate (iron plate, steel plate, aluminum plate, etc.), metal foil (iron foil, copper foil, steel foil, aluminum foil, etc.), expanded metal, punching metal, wire mesh, new material (metal coating) Fabrics, paper-like materials, metal fiber-containing fabrics, paper-like materials, etc.), conductive paints, and other conductive materials are used.
[0017]
Next, a communication structure between the electromagnetic wave shielding layer 4 provided on the outer wall portion 10 of the upper floor B and the electromagnetic wave shielding layer 4 provided on the outer wall portion 11 of the lower floor C, which is disposed with the floor slab 9 interposed therebetween, will be described.
As shown in FIG. 3, an electromagnetic wave shielding material 12 made of an iron plate or the like is provided along the outer surface of the floor slab 9 sandwiched between the outer wall portion 10 of the upper floor B and the outer wall portion 11 of the lower floor C. . The upper end portion side of the electromagnetic wave shielding material 12 covers the upper surface of the floor slab 9 facing the lower surface of the outer wall of the upper floor B, and the tip portion of the electromagnetic wave shielding layer 4 disposed on the outer wall portion 10 of the upper floor B. It communicates with the lower end part.
[0018]
The lower end side of the electromagnetic shielding material 12 covering the floor slab 9 is attached to the lower surface side of the floor slab 9 facing the steel beam 13 in the vertical direction, and communicates with the steel beam 13. Then, by connecting the electromagnetic wave shielding layer 4 disposed on the outer wall portion 11 on the lower floor C side to the steel beam 13, the electromagnetic wave shielding material 12 is connected to the outer wall portion 11 of the lower floor C via the steel beam 13. It communicates with the electromagnetic wave shielding layer 4 provided on the surface. At this time, since the steel beam 13 is a conductive substance, it can be regarded as a part of the electromagnetic shielding material.
[0019]
As shown in FIG. 3, in this embodiment, the electromagnetic shielding material 12 covering the floor slab 9 is composed of two plates, an upper member 12a and a lower member 12b, and the lower member 12b is a floor It also serves as a formwork for in-situ concrete placement into the slab 9. Of course, the electromagnetic wave shielding material 12 may be composed of one plate or may be divided into three or more parts. The upper member 12a and the lower member 12b are joined by screwing, spot welding, full welding, or the like after slab concrete placement.
[0020]
As shown in FIGS. 4 and 5, the electromagnetic shielding material 12 covering the floor slab 9 extends in the horizontal direction along the floor slab 9 to cover the entire outer surface of the floor slab 9.
As a result, the electromagnetic wave shielding layer 4 provided on the outer wall portion 10 of the upper floor B communicates with the electromagnetic wave shielding layer 4 provided on the outer wall portion 11 of the lower floor C, and from the outer portion of the floor slab 9 disposed therebetween. Electromagnetic leakage and intrusion are prevented.
[0021]
In addition, since the electromagnetic shielding material 12 does not penetrate the end of the floor slab 9, even if the electromagnetic shielding material 12 is provided to communicate the upper and lower electromagnetic shielding layers 4, the strength of the end of the floor slab 9 is increased. Is not reduced.
Here, 14 in FIG.4 and FIG.5 has shown the pillar member arrange | positioned at the outer wall part 10 side. An electromagnetic wave shielding material 15 for communication, which will be described later, is disposed at the joint portion of the column member 14 with the floor slab 9, and the electromagnetic wave shielding material 15 for communication and the end of the electromagnetic wave shielding material 12 covering the floor slab 9 are provided. Are concatenated. As a result, the column member 14 portion disposed on the outer wall portion 10 side and the connecting portion between the column member 14 portion and the floor slab 9 are also electromagnetically closed.
[0022]
Moreover, in the fastener 16 part provided in the outer upper surface of the floor slab 9 for attaching the curtain wall 19, the electromagnetic wave shielding material 12 covering the floor slab 9 is cut out as shown in FIG. Although the floor slab 9 is not covered, the fastener 16 is a conductive material, and since the fastener 16 constitutes a part of the electromagnetic wave shielding material 12, there is no problem.
[0023]
Here, in the said embodiment, although the electromagnetic wave shielding material 12 which covers the floor slab 9 is arrange | positioned so that it may adhere along the outer surface of the floor slab 9, it is not limited to this. . The point is that the floor slab 9 may be disposed so as to cover the outside, and therefore a predetermined gap may be provided between the floor slab 9 and the floor slab 9.
Here, as the electromagnetic wave shielding material 12 covering the floor slab, various conductive members can be used. However, since maintenance after construction is difficult, a predetermined thickness is determined by a material having predetermined durability. It is necessary to secure. Therefore, the electromagnetic wave shielding material 12 may be, for example, a metal plate such as an iron plate, a steel plate, or an aluminum plate, an expanded metal, or a punching metal (having a fine and thick eye). However, an iron plate is more advantageous than expanded metal in terms of shielding performance and durability.
[0024]
Next, a structure in which the electromagnetic wave shielding layer 5 of the upper floor portion 2a of the pillar member 2 that is a penetrating member and the electromagnetic wave shielding layer 5 of the lower floor portion 2b are communicated by the electromagnetic wave shielding material 20 for communication will be described.
As described above, the electromagnetic wave shielding layer 5 around the pillars in the layers B and C is formed by attaching the electromagnetic wave shielding material to the lower floor side portion 2b and the upper floor side portion 2a of the pillar member 2, respectively. Has been. Further, as shown in FIG. 7, an iron plate 21 as an electromagnetic wave shielding material is wound around the column at the beam joint. The electromagnetic wave shielding material is not limited to the iron plate 21. For example, it is preferable to use a metal plate such as a steel plate or an aluminum plate, an expanded metal, or a punching metal (thin with fine eyes and thickness). However, the iron plate 21 is more advantageous than the expanded metal in terms of shielding performance and durability.
[0025]
And as shown in the said FIG. 7, the electromagnetic wave shielding material 20 for communication is arrange | positioned along the circumference | surroundings of the pillar of the connection part of the floor slab 9 and the pillar member 2 along the circumference of the pillar. The communication electromagnetic shielding material 20 is formed of an iron plate, and as shown in FIGS. 7 and 8A, the main body portion 20a is disposed along the periphery of the pillar, and the upper and lower ends of the main body portion 20a. It is comprised from outward flange 20b, 20c each provided in a part.
[0026]
The main body portion 20a is arranged so as to cover the periphery of the column along the periphery of the column, and has a U-shaped cross section. In the main body portion 20a, a plurality of reinforcing bar through holes 20d that can penetrate the reinforcing bars 25 such as the main reinforcing bars of the floor slab 9 are formed in the thickness direction.
Here, FIG. 7 shows a state in which only one half of the periphery of the pillar is covered with one communication electromagnetic shielding material 20, but another communication electromagnetic shielding material 20 is arranged in the other half. ing. As a result, the entire circumference around the column at the joint with the floor slab 9 is surrounded by the two electromagnetic wave shielding materials 20 for communication.
[0027]
In addition, as shown in FIG.4 and FIG.5, as long as it is only in the side which faces the inner side of the building 1 which comprises electromagnetic wave shielding space, it is sufficient with respect to the pillar member 14 arrange | positioned at the above-mentioned outer wall part 10. It is only necessary to provide the electromagnetic wave shielding material 15 for communication.
Further, the outward flange 20c on the lower end side of the electromagnetic wave shielding material 20 for communication communicates with the electromagnetic wave shielding layer 5 attached to the column member 2 on the lower floor C via the steel beam 13 and the iron plate 21. . Further, the outward flange 20b on the upper end side of the electromagnetic wave shielding material 20 for communication communicates with the electromagnetic wave shielding layer 5 attached to the column member 2 on the upper floor B.
[0028]
The outward flanges 20b and 20c have a role of ensuring a sufficient contact area between the electromagnetic wave shielding material 20 for communication and the electromagnetic wave shielding layers 5 to ensure communication with the electromagnetic wave shielding layers 4, and the floor slabs 9 and It has a role to enhance the bond.
As a result, the electromagnetic wave shielding layer 5 on the lower floor side 2b and the electromagnetic wave shielding layer 5 on the upper floor side 2a formed on the column member 2 are connected to the electromagnetic wave shielding material 20 for communication disposed at the joint portion with the floor slab 9. Is communicated via. As a result, the space of the upper floor B and the lower floor C is electromagnetically insulated from the pillar member 2, and the above-mentioned pillar member can be obtained without providing an electromagnetic wave shielding layer on the floor portion of the upper floor B and the ceiling portion of the lower floor C. Leakage and intrusion of electromagnetic waves from 2 are prevented.
[0029]
Further, as shown in FIG. 8 (b), the reinforcing bars 25 arranged in the floor slab 9 are arranged on the column member 2 side through the reinforcing bar through holes 20 d provided in the communication electromagnetic shielding material 20. By fixing to the column member 2 portion, the floor slab 9 is coupled to the column member 2 with substantially the same strength as before. Thus, there is no problem even if the electromagnetic wave shielding material 20 for communication is arranged at the joint portion between the column member 2 and the floor slab 9.
[0030]
In addition, the construction of the joint portion between the pillar and the floor slab is, for example, arranging a formwork for the floor slab 9 and a formwork of the pillar portion, and then placing the communication electromagnetic shielding material 20 around the pillar. At the same time, the reinforcing bars 25 of the floor slab 9 are disposed through the reinforcing bar through holes 20d of the electromagnetic wave shielding material 20 for communication as described above. Then, the cast-in-place concrete is placed to construct the floor slab 9 and the column portion joined to the floor slab 9.
[0031]
Similarly, also in the joint part with the floor slab 9 in the shaft 3 penetrating the floor slab 9, the shaft 3 in which the electromagnetic shielding material 26 for communication having the same shape as described above is disposed in the joint part with the floor slab 9. The electromagnetic wave shielding layer 6 on the lower floor C side around the shaft 3 and the electromagnetic wave shielding layer 6 on the upper floor B are communicated with each other through the communicating electromagnetic wave shielding material 26. As a result, the space of the upper floor B and the lower floor C is electromagnetically insulated from the shaft 3, so that the electromagnetic wave shielding layer is not provided on the floor portion of the upper floor B and the ceiling portion of the lower floor C. Also prevents leakage and intrusion of electromagnetic waves.
[0032]
Here, since the shaft 3 does not support the floor slab 9, a rebar through hole is not necessary for the electromagnetic wave shielding material 26 for communication.
The communication electromagnetic shielding materials 20 and 26 have a U-shaped cross section because the column member 2 and the shaft 3 to be attached have a square shape in the cross section. If the surface is circular or the like, it is configured in a circular arc shape or the like in accordance with its shape.
[0033]
The communication electromagnetic shielding materials 20 and 26 have a pair of outward flanges, but the outward flanges may not be provided. For example, as shown to Fig.10 (a), you may set to a longitudinal cross-section L shape, and as shown to FIG.10 (b), you may abbreviate | omit an outward flange.
Further, as shown in FIG. 11, the communication electromagnetic shielding materials 20 and 26 may be constituted by members divided into two parts in the vertical direction so that the upper position can be adjusted according to the concrete top end of the slab. Good.
[0034]
Moreover, the arrangement position of the electromagnetic wave shielding material 20 for communication may be arranged so as to be embedded in the column member 2 rather than the position shown in the above embodiment, or the floor slab 9 than the position shown in the above embodiment. It may be arranged so as to project to the side. The upper end part and the lower end part of the electromagnetic wave shielding material 20 for communication only need to communicate electromagnetically with the corresponding electromagnetic wave shielding layer 4 without a gap.
[0035]
Here, as the electromagnetic wave shielding material 20 for communication, various conductive members can be used. However, since maintenance after construction is difficult, a predetermined thickness is secured by a material having a predetermined durability. There is a need. Accordingly, the communication electromagnetic shielding material 20 is preferably made of, for example, a metal plate such as an iron plate, a steel plate, or an aluminum plate, an expanded metal, a punching metal, or a wire mesh (having a fine mesh and a thickness). However, an iron plate is more advantageous than expanded metal in terms of shielding performance and durability.
[0036]
By configuring as described above, the space of the upper floor B and the space of the lower floor C are electromagnetically insulated from the outside of the building 1 and other spaces in the building 1, and thus the space of the upper floor B. And the space of the lower floor C constitute one partitioned electromagnetic shielding space.
That is, the space of the upper floor B and the space of the lower floor C are electromagnetically closed without providing the electromagnetic wave shielding layer 4 overlapping the floor portion of the upper floor B and the ceiling portion of the lower floor C, respectively. To do.
[0037]
Furthermore, when using the space of the upper floor B and the space of the lower floor C as independent electromagnetic shielding spaces, for example, by providing the electromagnetic shielding layer 4 only on the floor portion of the upper floor B, The space and the space of the lower floor C are electromagnetically insulated, and it is possible to configure an independent electromagnetic shielding space. That is, it is not necessary to provide an electromagnetic wave shielding layer overlapping between the floor portion and the ceiling portion provided with the floor slab 9 interposed therebetween as in the prior art.
[0038]
In addition, although the said embodiment demonstrated the example which divides two space of the upper floor B and the lower floor C which sandwiched one floor slab 9 into one electromagnetic wave shielding space, it is limited to this. is not. For example, a space that is arranged above and below each floor slab 9 so as to divide the upper and lower three layers into one electromagnetic wave shielding space, or so that the entire space constituting the building 1 becomes one electromagnetic wave shielding space. The electromagnetic shielding layers 4 of the vertical members may be communicated with each other.
[0039]
Next, a second embodiment will be described. The same members as those in the above embodiment will be described with the same reference numerals.
In the form of this 2nd Embodiment, when building the floor slab 9 of each floor, each floor slab 9 is built using the deck plate 30 as a floor formwork. Accordingly, the deck plate 30 constitutes an electromagnetic wave shielding layer on the ceiling of each floor.
[0040]
Other configurations are the same as those in the first embodiment.
However, the electromagnetic wave shielding material 12 and the communication electromagnetic wave shielding material 20 arranged so as to cover the outside of the floor slab 9 are, as shown in FIG. 14, the above-described deck constituting the electromagnetic wave shielding layer of the ceiling portion of the lower floor C. The plate 30 is kept in communication.
Thereby, even if an electromagnetic wave shielding layer is not provided on the floor portion of the upper floor B, the space of the upper floor B becomes an electromagnetic wave shielding space that is electromagnetically closed using the deck plate 30. As described above, in the present embodiment, the deck plate 30 is used as an electromagnetic shielding layer for the ceiling, and the electromagnetic shielding space is electromagnetically closed without separately providing an electromagnetic shielding layer on the floor. Can be built.
[0041]
Here, when the electromagnetic wave shielding space is constructed by a conventional method that does not employ this embodiment, even if the floor slab 9 is constructed using the deck plate 30 as a floor mold as described above, FIG. As described above, the deck plate 30 serves as an electromagnetic shielding layer for the ceiling, but does not serve as an electromagnetic shielding layer for the floor. Therefore, it is necessary to separately construct the electromagnetic shielding layer 60 on the floor.
[0042]
【The invention's effect】
As described above, in the electromagnetic wave shielding structure for a building according to the present invention, the upper and lower spaces defined by the floor slab constitute one electromagnetic wave shielding space. As a result, it is electromagnetically insulated from the outside of the building and other spaces in the building without providing an electromagnetic shielding layer overlapping the floor portion on the upper floor side and the ceiling portion on the lower floor side as in the past. There is an effect that an electromagnetic wave shielding space can be configured.
[0043]
And even when the space above and below the layer is made into an independent electromagnetic shielding space, the floor slab is sandwiched only by providing an electromagnetic shielding layer only on either the upper floor portion or the lower floor portion. There is an effect that the upper floor side and the lower floor side are electromagnetically insulated, and an independent electromagnetic shielding space can be obtained.
At this time, when the invention described in claim 1 is adopted, the electromagnetic wave shielding layers of the outer wall portion of the upper floor and the outer wall portion of the lower floor are communicated via the outside of the floor slab. And the electromagnetic shielding material which connects each electromagnetic shielding layer of the outer wall part of a lower floor is prevented from penetrating a floor slab. Thereby, even if each electromagnetic wave shielding layer of the outer wall part of the upper floor and the outer wall part of the lower floor communicate with each other, there is an effect that there is no fear of reducing the strength of the floor slab end.
[0044]
In addition, even if the electromagnetic wave shielding layers of the outer wall portions of the upper and lower layers are communicated as described above, if there is a penetrating member such as an intermediate column or a shaft, electromagnetic waves leak or electromagnetic waves invade through that part, By adopting the invention described in claim 2 , the electromagnetic wave shielding space is electromagnetically insulated from the penetrating member, and the electromagnetic wave shielding space constituted by communicating the upper and lower layers is completely electrically connected to the outside. There is an effect that it is insulated.
[0045]
At this time, the electromagnetic wave shielding material for communication passes through the joint portion between the penetrating member and the floor slab, but when the penetrating member is a pillar member that supports the floor slab, the invention described in claim 3 is adopted. As described above, even if the electromagnetic wave shielding layers around the penetrating members of the upper and lower layers are communicated with each other by the electromagnetic wave shielding material for communication, there is an effect that a predetermined strength is ensured in the joint portion between the column member and the floor slab. That is, the electromagnetic wave shielding layers around the upper and lower column members can be communicated with each other while ensuring a predetermined strength at the joint between the column member and the floor slab.
[Brief description of the drawings]
FIG. 1 is a plan view of each layer constituting an electromagnetic wave shielding space according to an embodiment of the present invention.
2 is a cross-sectional view taken along line AA in FIG. 1 showing an electromagnetic wave shielding space according to an embodiment of the present invention.
FIG. 3 is a side view showing a communication state of the electromagnetic wave shielding layer provided on the outer wall portion of the upper and lower floors according to the embodiment of the present invention.
FIG. 4 is a perspective view showing a connection between an electromagnetic wave shielding material covering a floor slab according to an embodiment of the present invention and column member positions arranged on an outer wall portion.
FIG. 5 is a view showing the relationship between the electromagnetic wave shielding material covering the floor slab according to the embodiment of the present invention and the column member positions arranged on the outer wall portion.
FIG. 6 is a diagram showing an arrangement of electromagnetic shielding materials at a curtain wall fastener mounting portion according to an embodiment of the present invention.
FIG. 7 is a view showing an electromagnetic wave shielding material for communication arranged at a joint portion between a column member and a floor slab according to the embodiment of the present invention.
8A and 8B are diagrams showing a communication electromagnetic shielding material according to an embodiment of the present invention, in which FIG. 8A is a perspective view thereof and FIG. 8B is an enlarged view of a part thereof.
FIG. 9 is a view showing an electromagnetic wave shielding material for communication disposed in a joint portion between a shaft and a floor slab according to an embodiment of the present invention.
FIG. 10 is another view showing another example of the electromagnetic wave shielding material for communication according to the embodiment of the present invention, in which (a) is a cross-sectional view when the cross section is L-shaped, and (b) is a flange. Cross-sectional views in the case where is omitted are shown.
FIG. 11 is a cross-sectional view showing another example of the electromagnetic wave shielding material for communication according to the embodiment of the present invention.
FIG. 12 is a diagram showing an electromagnetic wave shielding structure in a conventional building.
FIG. 13 is a diagram showing a case where there are no overlapping electromagnetic shielding layers in an electromagnetic shielding structure in a conventional building.
FIG. 14 is a cross-sectional view showing an electromagnetic wave shielding space according to a second embodiment of the present invention.
FIG. 15 is a cross-sectional view showing a conventional electromagnetic wave shielding space.
[Explanation of symbols]
1 Building 2 Column member (intermediate column)
3 Shaft 4, 5, 6, 7, 8
Electromagnetic wave shielding layer 9 Floor slabs 10, 11 Outer wall portion 12 Electromagnetic wave shielding material 20 Electromagnetic wave shielding material 20d for communication Reinforcing bar through hole

Claims

In the electromagnetic wave shielding structure that constitutes the electromagnetic wave shielding space by partitioning the space in the building by the electromagnetic wave shielding layer arranged along the inner surface of the space,
Floor slabs placed between the outer wall of the upper floor and the outer wall of the lower floor without providing an electromagnetic shielding layer that partitions the space between the upper floor and the lower floor, which is defined by the floor slab An electromagnetic wave shielding layer that covers the outside of the upper wall and that is provided on the outer wall portion that defines the space on the upper floor, and an electromagnetic wave shielding material that communicates with the electromagnetic wave shielding layer that is provided on the outer wall portion that defines the space on the lower floor. The electromagnetic shielding structure of the building.

An electromagnetic wave shielding material for communication that communicates the electromagnetic wave shielding layer on the upper floor side and the electromagnetic wave shielding layer on the lower floor side provided in the penetrating member that vertically penetrates the floor slab through the joint portion between the floor slab and the penetrating member. The electromagnetic wave shielding structure for a building according to claim 1 , wherein:

The building according to claim 2 , wherein the penetrating member is a column member, and the electromagnetic wave shielding material for communication is provided with a plurality of reinforcing bar through holes that can penetrate the reinforcing bars of the floor slab. Electromagnetic shielding structure.