JP4083615B2

JP4083615B2 - Radio wave absorption panel mounting structure

Info

Publication number: JP4083615B2
Application number: JP2003093960A
Authority: JP
Inventors: 政博福井; 勝宣細谷; 睦和田; 聡坂井
Original assignee: Mitsubishi Cable Industries Ltd
Current assignee: Mitsubishi Cable Industries Ltd
Priority date: 2003-03-31
Filing date: 2003-03-31
Publication date: 2008-04-30
Anticipated expiration: 2023-03-31
Also published as: JP2004300725A

Description

【０００１】
【発明の属する技術分野】
本発明は、電波吸収パネル取付構造に関する。
【０００２】
【従来の技術】
近年、高速道路交通システムの一分野である有料道路の自動料金収受（ＥＴＣ）システムが採用されている。このＥＴＣシステムによって、料金所での自動車のノンストップによる渋滞解消、キャッシュレス化への対応、料金所での無人化等を図ろうとしている。
【０００３】
このＥＴＣシステムに於て、アーチ状のゲート（ガントリー）の上辺に設置した路側アンテナから道路に向けて電波を発信し、この道路を走行通過する自動車の車載器と上記路側アンテナとの間で双方向通信を行う。その際、上記路側アンテナから直接的に車載器の電波が到達するのみであれば、問題は生じないのであるが、上記路側アンテナから発信された電波が一旦道路面にて反射し、さらに、該料金所近傍にて上記道路と交差してあるいは平行に設けられた別の高架道路の裏面側───高架裏───で再反射すると、次のような問題を生ずる。即ち、上記高架裏で電波が再反射すると、再び上記車載器へ電波が到達し、一度の通過にかかわらず、二度の料金徴収を行う等の誤操作のおそれがあった。
そこで、上記料金所等の近傍の高架道路の裏面側───高架裏───に、電波の反射を低減乃至無くするための電波吸収パネルを取付けている。
【０００４】
従来、高架裏（桁裏ということもある）に電波吸収パネルを取付ける方法としては、地上から足場を組み立てて、高架裏に対しこの足場から作業して電波吸収パネルを取付け、その後、この足場で解体するという方法が用いられ、また、補修作業時も同様に高架裏側に組立てた足場から補修作業を行い、その後、この足場を解体していた。
しかしながら、このような電波吸収パネルの取付方法では、高架の桁下を往来する車を、長い期間にわたり通行規制を行う必要があった。
そのような問題を解決するため、電波吸収パネルを足場に兼用する構成が提案されている（例えば、特許文献１、特許文献２参照）。
【０００５】
【特許文献１】
特許第３０８４００９号公報
【特許文献２】
特開２０００−２３４３１２公報
【０００６】
【発明が解決しようとする課題】
しかしながら、電波吸収パネルの上面を足場に兼用する構造では、以下のような問題がある。つまり、▲１▼交換するパネルの枚数によってはパネルが足場として使用できず、作業効率を低下させる。▲２▼パネルを取り外した箇所が存在した場合、作業者の足元が危険であり、落下するおそれが生じる。また、足場が無いので高架裏（桁裏）の補修を行うことが困難である。▲３▼高架裏には、多数の梁（桁）が存在し作業者が足を引っ掛けるおそれが多分にあり危険である。
【０００７】
以上のような問題▲１▼▲２▼▲３▼があった。本発明は、このような問題▲１▼▲２▼▲３▼を解決して、短い工期にて確実かつ簡単に電波吸収パネルの取付作業が可能であり、かつ、安全性が高い取付構造を提供することを一つの目的とし、また、布設後は、安全な足場を構成でき、また、足場を残したまま電波吸収パネルの取り外しが可能な電波吸収パネル取付構造を、提供することを他の目的とする。
【０００８】
【課題を解決するための手段】
上述の目的を達成するために、本発明に係る電波吸収パネル取付構造は、上層の足場板と下層の電波吸収パネルとが上下所定間隔をもって連結中間部材にて一体状に連結された複合パネル体を備え、該複合パネル体の上記所定間隔の間隔前後端部が、高架裏に配設された横梁が差し込み状となるように、該横梁を被覆して該横梁を上下両面側から隠すよう該複合パネル体が該横梁に取着されたものである。
また、上記足場板は上記横梁の上面に載置状となって該横梁に固定され、上記電波吸収パネルは該足場板に上記連結中間部材を介して吊り下げ状とされて該横梁の下面側を隠すよう被さるものである。
また、上記横梁は上記高架裏に配設された複数本の縦梁を介して該縦梁の下面側に取着され、該縦梁の下面側に配置される上記複合パネル体は該縦梁との干渉を避ける足場不存在領域を有するものである。
【０００９】
【発明の実施の形態】
以下、図示の実施の形態に基づき、本発明を詳説する。
【００１０】
図１に示した一部破断斜視説明図に於て、18は高架道路であって、その高架裏（桁裏）11には、長手方向にＨ型鋼等の高架道路主桁12が複数列配設されている。この主桁12と平行にその下方位置に、Ｈ型鋼等の縦梁３が吊部材（索条）２ａにて吊下状に保持されている。そして、図２の斜視説明図に示すように、平面視において縦梁３に直交状に、横梁４が複数本の縦梁３の下面に当接して固着される。即ち、多数本の横梁４が平行に、上記高架道路18の長手方向と直交する幅方向に配設され、縦梁３と横梁４とにより平面視井桁状となる。なお、この長手方向を前後方向とし、幅方向を左右方向と定義する。
【００１１】
横梁４は、足場板５と電波吸収パネル６とを備える複合パネル体１固定用部材であり、その長手方向に向かって見てＩ型断面であり（既成の）Ｈ型鋼等を使用すればよく、または、プレートを溶接してＩ型断面の構造としてもよい。即ち、横梁４は、上フランジ板部13と、下フランジ板部14と、これらを連結する中間連結板部15と、により構成され、上フランジ板部13が縦梁３の下面とボルト・ナット等の固定部材や溶接により接続される。また、横梁４は長手方向に同一Ｉ断面の長尺梁部材で、その端部４ｃにおいても図２に示すように断面Ｉ型である。
【００１２】
図４、図５、図６、図10は、複合パネル体１の平面図、側面図、側面断面図、斜視図であり、図５と図６は複合パネル体１が平行な横梁４，４間に取り付けられた状態である。
これらに於て、本発明に係る取付構造により高架裏11に取付けされる電波吸収パネル６は、足場板５と共に複合パネル体１として予め構成されたものであり、複合パネル体１は、上層の足場板５と下層の電波吸収パネル６とが上下所定間隔Ａをもって連結中間部材７にて───連結中間部材７を介在させて───分解可能に一体状に連結されたものである。
そして、本発明に係る取付構造は、複合パネル体１の上記所定間隔Ａの間隔前後端部10が、高架裏11に配設された横梁４がその間隔前後端部10に差し込み状となるように、横梁４を被覆して（覆い被さって）横梁４を上下両面側から隠すよう、複合パネル体１が横梁４に取着されたものである。
【００１３】
電波吸収パネル６は、電磁波吸収パネルとも呼ばれ、例えば、平面視矩形板状の電波吸収本体と、電波吸収本体の下面側に積層状とした表面板材（ＦＲＰ板）と、電波吸収本体の上面乃至側面を保護する保護板材等を有するよう構成し、矩形板状のパネル部材としている。なお、電波吸収本体は従来より知られている材料・構成によるものが適用できる。
【００１４】
足場板５は、図４〜図６及び図10に示すように、平面視、電波吸収パネル６の大きさ（縦・横寸法）と（略）同一とする。図示の足場板５は、金属製プレートを波型に折り曲げて形成した断面凹凸波型の足場部材とし、軽量でありながら剛性を有するものとしている。これにより、複合パネル体１を広面積としても、軽量で作業者が施工に際し取り扱いやすくしている。
【００１５】
図７と図８は、取付構造を説明する要部の正面図と側面図であり、複合パネル体１の足場板５と電波吸収パネル６との間の中間層に配設される連結中間部材７は、金属製プレートを略Ｚ字状、コ字状に折り曲げて形成したスペーサ部材であり、連結中間部材７は複数個のスペーサ部材から成る。
【００１６】
そして、連結中間部材７のスペーサ部材が、複合パネル体１の前後方向（長手方向）両端縁から所定寸法中央側寄りの位置に夫々配設され、図８に示すように、複合パネル体１の前後方向両端部の所定間隔Ａを有する上記間隔前後端部10，10が断面凹形状（コ字状）の差し込み凹部８，８とされる。複合パネル体１の間隔前後端部10（差し込み凹部８）は、複合パネル体１の左右方向（幅方向）に同一断面形状で貫通状の空間部であり、これにより、後に説明するが、複合パネル体１を横梁３の長手方向に沿ってスライドさせて取着させることができる。
【００１７】
そして、連結中間部材７（スペーサ部材）の上面板が足場板５と第一ボルトナット16により接続され、連結中間部材７（スペーサ部材）の下面板が電波吸収パネル６と第二ボルトナット17により接続される。また、第一・第二ボルトナット16，17により、図４等に示すように、複数箇所において夫々足場板５と電波吸収パネル６とを連結中間部材７を挟んで連結させているが、複数箇所の第一ボルトナット16のうち、複合パネル体１の前後方向両端部側においては、横梁４との連結固定用を兼ねた第一ボルトナット16───図４では符号16′で示し片側２個───としている。
【００１８】
複合パネル体１は、その前後方向両端部側の間隔前後端部10，10により、横梁４を隠蔽するよう、横梁４に沿って並べて複数枚取着されるものであるが、さらに説明すると、複合パネル体１の足場板５は横梁４の上面４ａに載置状となって横梁４を上面４ａから被覆して横梁４に固定され、そして、電波吸収パネル６は足場板５に連結中間部材７を介して吊り下げ状とされて横梁４の下面４ｂ側を隠すよう被さる構造となる。従って、複数枚の複合パネル体１の端部が横梁４の長手方向に沿って横梁４を上下面から隠した構造となる。
【００１９】
そして、この取付構造によれば、足場板５は横梁４の上フランジ板部13の上面に載置状となって固定されるため、足場板５上に荷重が作用しても───作業者が乗っても───極めて安全である。
さらに、電波吸収パネル６は、第二ボルトナット17を緩める（外す）ことにより分解可能とれ、足場板５を残したまま連結中間部材７から電波吸収パネル６を単独で取り外すことができる。
また、図４と図５に示すように、複合パネル体１の左右方向両側には薄板からなる化粧パネル板19，19を備える。
【００２０】
図８に示すように、複合パネル体１の前後方向の（最大の）長さ寸法Ｂは、隣り合う横梁４，４の中心線間隔寸法Ｅから３mm〜15mm程度の取付け用クリアランス寸法を引いた寸法に設定するのが好ましい。これにより、複合パネル体１の取付作業を容易にすると共に、隣り合う電波吸収パネル６，６間の隙間を小さくすることができる。
また、間隔Ａの寸法は横梁４の高さ寸法より十分大きく───２cm〜８cm程度大きく───設定するのが好ましく、複合パネル体１の取付作業を容易にすると共に不要に複合パネル体１を厚く（大きく）することがない。
【００２１】
次に、この複合パネル体１の高架裏（桁裏）11への取付方法（工法）について説明すると、図１に示すように、高架裏11の主桁12に吊部材２ａを垂下状に取り付け、縦梁３を吊部材２ａによって吊り下げ状に、かつ、主桁12の下方に平行に保持する。その後、図２に示すように、横梁４を縦梁３の下面にかつ平面視直交状に、ボルト・ナット等の固定部材や溶接により取付ける。複数本（多数本の）横梁４は、相互が平行として、高架裏11に道路の左右幅方向に配設されることとなる。
【００２２】
そして、足場板５と電波吸収パネル６との間の所定間隔Ａの間隔前後端部10により、横梁４全体を上下挟んで横梁４が間隔前後端部10（差し込み凹部８）に差し込み状となるよう、複合パネル体１を横梁４に取着させる。
複合パネル体１の横梁４への取着は、図３に示すように、横梁４の端部４ｃから複合パネル体１の前後方向両側の間隔前後端部10，10により差し入れ、矢印Ｓのように複合パネル体１を横梁４の長手方向にスライドさせながら順次取付けていく。そして、複合パネル体１を所定の固定位置に位置させてから、第一ボルトナット16′により横梁４の上フランジ板部13に設けた貫通孔において、横梁４と複合パネル体１とを固定する。
【００２３】
また、他の取着方法としては、図示省略するが、複合パネル体１の前後方向の長さ寸法Ｂと横梁４，４間の寸法Ｅを適切に調整し、複合パネル体１を上下方向に傾斜させて前後方向の一側縁部（上方側）を一方の横梁４に差し込み、次いで、他側縁部（下方側）を持ち上げて他方の横梁４に（前後方向にずらしながら）嵌め込むようしてもよい。
つまり、いずれの方法とも、複合パネル体１の自重を一旦横梁４に預けてから固定させるため安全である。
【００２４】
その後、図示省略するが、隣り合う複数枚の複合パネル体１の上面（足場板５）に夫々取着させたアイボルトやアイナット等に落下防止ワイヤを挿通させ、複合パネル体１の不意の落下を防止する。この落下防止ワイヤの両端部は縦梁３や横梁４に固着させればよい。
そして、図示省略するが、主桁12と縦梁３との間に板片をボルト・ナット又は溶接にて連結して固定吊り部材として機能させ、主桁12と縦梁３との間の構造を強固なものとする。なお、吊部材２ａはそのまま残し、あるいは、一部を除去して、電波吸収パネル６の取付作業は完了する。
【００２５】
図９は、本発明に係る取付構造を示す正面図であり、複数枚の複合パネル体１が横梁４の長手方向に沿って隙間なく並設されている。図10は、本発明に係る取付構造が備える複合パネル体１の実施の一形態を示す斜視図であるが、他の実施の形態としては、図11、図12のようなものがある。図11及び図12の複合パネル体１は、横梁４に固定された状態で縦梁３との干渉を避ける足場不存在領域９を有するものである。つまり、図３及び図９に示すように、横梁４は高架裏11に配設された複数本の縦梁３を介して縦梁３の下面側に取着されるため、縦梁３の下面側に配設される複合パネル体１は、複合パネル体１が有する足場板５と縦梁３の下部との干渉を防ぐため、縦梁３の形状（幅寸法）に対応させて足場板５の一部を帯状に省略した足場不存在領域９を形成している。
【００２６】
そして、図11の複合パネル体１（１ｂ）は、その左右方向端縁がその前後方向に沿って縦梁３の下面と重なる場合に使用され、図12の複合パネル体１（１ｃ）は、その左右方向中央部がその前後方向に沿って縦梁３の下面と重なる場合に使用される。つまり、図９に示すように、縦梁３の下面側に配置される複合パネル体１が、縦梁３の下部との干渉を避ける足場不存在領域９を備える。なお、図11と図12に示した複合パネル体１は、縦梁３の下方より嵌め込む手法により布設できる。
【００２７】
本発明は上記のような構成であり、地上から組み立てた足場を必要としないので、従来のように、桁下を行き来する車の通行規制を行う必要もない。そして、いつでも足場板５の上を歩いて、桁裏、及び、電波吸収パネル６のメンテナンス（点検・修理）を容易に行い得るという利点がある。さらに、高架道路18の振動に対して、耐久性がある。
【００２８】
【発明の効果】
本発明は上述の構成により次のような効果を奏する。
【００２９】
（請求項１によれば）足場板５と電波吸収パネル６とを予め組み立てた複合パネル体１として取り付けるため、取付作業が簡略化できる。また、従来のような地上から組み立てた足場を別途組立てたり解体する手間がなくなり、工期の短縮化が図れる。
そして、布設後は、横梁４が足場板５から突出せず（横梁４が露出せず）、複数枚による足場板５を広域にわたって平面状に布設できる。従って、高架裏11における作業が安全となり、かつ、横梁４の下面４ｂ側において隣り合う電波吸収パネル６，６間の隙間を無くすることができ、横梁４の下面４ｂにて電波を反射させず、電波吸収特性を低下させることがない。
【００３０】
（請求項２によれば）足場板５を安定して横梁４に固定でき安全である。また、電波吸収パネル６と連結中間部材７とを連結するボルトナット等を緩める（外す）ことにより、足場板５を残したまま電波吸収パネル６のみを取り外し、交換可能とできる。電波吸収パネル６が取り替えのために取り外されていても、残された足場板５により高架裏（桁裏）11等の補修を安全に行い得る。
【００３１】
（請求項３によれば）縦梁３の真下位置でも複合パネル体１を配置できる。つまり、高架裏11の幅寸法に左右されずに隙間なく全面に足場板５及び電波吸収パネル６を配設できる。また、足場板５と縦梁３との間に大きな隙間を空けることがなく、縦梁３，３間全面を平坦な足場とすることもできる。
【図面の簡単な説明】
【図１】本発明の実施の一形態を示し、第一の取付手順を示す斜視説明図である。
【図２】第二の取付手順を示す斜視説明図である。
【図３】第三の取付手順を示す斜視説明図である。
【図４】複合パネル体の平面図である。
【図５】取付構造を説明する複合パネル体の側面図である。
【図６】取付構造を説明する複合パネル体の側面断面図である。
【図７】取付構造を説明する複合パネル体の要部正面図である。
【図８】取付構造を説明する複合パネル体の要部側面図である。
【図９】取付構造の正面図である。
【図１０】複合パネル体の斜視図である。
【図１１】複合パネル体の他の実施の形態を示す斜視図である。
【図１２】複合パネル体のさらに別の実施の形態を示す斜視図である。
【符号の説明】
１複合パネル体
３縦梁
４横梁
４ａ上面
４ｂ下面
５足場板
６電波吸収パネル
７連結中間部材
９足場不存在領域
10 間隔前後端部
11 高架裏
Ａ間隔[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a radio wave absorption panel mounting structure.
[0002]
[Prior art]
In recent years, an automatic toll collection (ETC) system for toll roads, which is a field of highway traffic systems, has been adopted. With this ETC system, the company is trying to resolve non-stop traffic jams at the toll gate, deal with cashlessness, and unmanned at the toll gate.
[0003]
In this ETC system, radio waves are transmitted toward the road from the roadside antenna installed on the upper side of the arched gate (gantry), and both between the vehicle-mounted device and the roadside antenna traveling on this road. Communication. At that time, there is no problem if the radio wave of the vehicle-mounted device only reaches directly from the roadside antenna, but the radio wave transmitted from the roadside antenna is reflected once on the road surface, The following problems occur when re-reflecting on the back side of another elevated road that crosses or is parallel to the above road in the vicinity of the toll booth. That is, when the radio wave is re-reflected behind the overhead, the radio wave reaches the vehicle-mounted device again, and there is a risk of erroneous operations such as collecting charges twice regardless of whether the vehicle passes once.
In view of this, a radio wave absorption panel for reducing or eliminating radio wave reflection is attached to the back side of the elevated road in the vicinity of the toll booth.
[0004]
Conventionally, as a method of attaching a radio wave absorption panel to the back of the overhead (sometimes called the back of the girder), assemble a scaffold from the ground, work from this scaffold on the back of the overhead, attach the radio wave absorption panel, and then use this scaffold The method of dismantling was used, and during the repairing work, repair work was similarly performed from the scaffold assembled on the back side of the overhead, and then this scaffold was dismantled.
However, with such a method for mounting a radio wave absorption panel, it has been necessary to restrict traffic for a long period of time for vehicles traveling over the overhead girder.
In order to solve such a problem, a configuration in which the radio wave absorption panel is also used as a scaffold has been proposed (see, for example, Patent Document 1 and Patent Document 2).
[0005]
[Patent Document 1]
Japanese Patent No. 3084009 [Patent Document 2]
Japanese Patent Laid-Open No. 2000-234312
[Problems to be solved by the invention]
However, the structure in which the upper surface of the radio wave absorption panel is also used as a scaffold has the following problems. That is, (1) depending on the number of panels to be replaced, the panels cannot be used as a scaffold, and work efficiency is lowered. {Circle around (2)} When there is a place where the panel is removed, the operator's feet are dangerous and may fall. In addition, since there is no scaffold, it is difficult to repair the back of the elevated (the back of the girder). {Circle around (3)} Many beams (girder) exist on the back of the overpass, and there is a possibility that the operator may catch his / her foot, which is dangerous.
[0007]
There were the above problems (1), (2), and (3). The present invention solves such problems (1), (2), and (3), and enables a radio wave absorption panel to be installed securely and easily in a short construction period, and has a highly safe mounting structure. Another object is to provide a radio wave absorption panel mounting structure that can be configured as a safe scaffolding after installation and that can be removed while leaving the scaffolding. Objective.
[0008]
[Means for Solving the Problems]
In order to achieve the above-described object, the radio wave absorption panel mounting structure according to the present invention is a composite panel body in which an upper scaffolding plate and a lower radio wave absorption panel are integrally connected by a connecting intermediate member at a predetermined vertical interval. The front and rear end portions of the composite panel body at the predetermined interval are covered with the horizontal beam so that the horizontal beam disposed on the back of the elevated bridge is inserted, and the horizontal beam is hidden from both the upper and lower sides. A composite panel is attached to the cross beam.
In addition, the scaffold plate is placed on the upper surface of the transverse beam and fixed to the transverse beam, and the radio wave absorption panel is suspended from the scaffold plate via the connecting intermediate member, and the lower surface side of the transverse beam The cover is hidden.
Further, the horizontal beam is attached to the lower surface side of the vertical beam via a plurality of vertical beams arranged on the back of the elevated, and the composite panel body disposed on the lower surface side of the vertical beam is the vertical beam. It has a scaffold non-existence area that avoids interference with.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on the illustrated embodiment.
[0010]
In the partially broken perspective view shown in FIG. 1, reference numeral 18 denotes an elevated road, and an elevated road main girder 12 made of H-shaped steel or the like is arranged in a plurality of rows in the longitudinal direction (back of the girder) 11. It is installed. A vertical beam 3 such as H-shaped steel is held in a suspended state by a suspension member (strand) 2a at a position below the main girder 12 in parallel therewith. Then, as shown in the perspective explanatory view of FIG. 2, the horizontal beam 4 is abutted and fixed to the lower surface of the plurality of vertical beams 3 so as to be orthogonal to the vertical beam 3 in plan view. That is, a large number of transverse beams 4 are arranged in parallel and in the width direction perpendicular to the longitudinal direction of the elevated road 18, and the longitudinal beams 3 and the transverse beams 4 form a plane view girder shape. The longitudinal direction is defined as the front-rear direction, and the width direction is defined as the left-right direction.
[0011]
The cross beam 4 is a member for fixing the composite panel body 1 including the scaffolding plate 5 and the radio wave absorption panel 6 and has an I-shaped cross section when viewed in the longitudinal direction thereof. Alternatively, the plate may be welded to form an I-shaped cross section. That is, the horizontal beam 4 is composed of an upper flange plate portion 13, a lower flange plate portion 14, and an intermediate connecting plate portion 15 for connecting them, and the upper flange plate portion 13 is connected to the lower surface of the vertical beam 3, bolts and nuts. It is connected by fixing members, such as, and welding. Further, the cross beam 4 is a long beam member having the same I cross section in the longitudinal direction, and its end 4c is also of an I type cross section as shown in FIG.
[0012]
4, 5, 6, and 10 are a plan view, a side view, a side sectional view, and a perspective view of the composite panel body 1, and FIGS. 5 and 6 are cross beams 4 and 4 in which the composite panel body 1 is parallel. It is in a state of being attached in between.
In these, the radio wave absorption panel 6 attached to the elevated back 11 by the attachment structure according to the present invention is pre-configured as the composite panel body 1 together with the scaffold plate 5, and the composite panel body 1 is composed of an upper layer. The scaffolding plate 5 and the lower-layer radio wave absorption panel 6 are connected by a connecting intermediate member 7 with a predetermined interval A in the upper and lower directions, with the connecting intermediate member 7 interposed therebetween, so that they can be disassembled integrally.
In the mounting structure according to the present invention, the front and rear end portions 10 of the composite panel body 1 with the predetermined interval A are inserted into the front and rear end portions 10 of the horizontal beam 4 disposed on the elevated back 11. In addition, the composite panel 1 is attached to the horizontal beam 4 so as to cover (cover) the horizontal beam 4 and hide the horizontal beam 4 from both the upper and lower sides.
[0013]
The radio wave absorption panel 6 is also referred to as an electromagnetic wave absorption panel. For example, the radio wave absorption main body having a rectangular plate shape in plan view, a surface plate material (FRP plate) laminated on the lower surface side of the radio wave absorption main body, and the upper surface of the radio wave absorption main body. Or it is comprised so that it may have a protection board material etc. which protect a side surface, and it is set as the rectangular plate-shaped panel member. In addition, the electromagnetic wave absorption main body can be applied with a conventionally known material and configuration.
[0014]
As shown in FIGS. 4 to 6 and 10, the scaffold plate 5 is (substantially) the same as the size (vertical / horizontal dimensions) of the radio wave absorption panel 6 in plan view. The illustrated scaffold plate 5 is a corrugated cross-section scaffold member formed by bending a metal plate into a corrugated shape, and is lightweight but rigid. Thereby, even if the composite panel body 1 has a large area, it is lightweight and is easy for an operator to handle during construction.
[0015]
FIGS. 7 and 8 are a front view and a side view of a main part for explaining the mounting structure, and a connecting intermediate member disposed in an intermediate layer between the scaffolding plate 5 and the radio wave absorption panel 6 of the composite panel body 1. Reference numeral 7 denotes a spacer member formed by bending a metal plate into a substantially Z shape or a U shape, and the connecting intermediate member 7 includes a plurality of spacer members.
[0016]
And the spacer member of the connection intermediate member 7 is each arrange | positioned from the front-back direction (longitudinal direction) both ends edge of the composite panel body 1 in the position of the center side of a predetermined dimension, and as shown in FIG. The interval front and rear end portions 10 and 10 having a predetermined interval A at both ends in the front-rear direction are the insertion recesses 8 and 8 having a concave cross-section (a U-shape). The front and rear end portions 10 (insertion recesses 8) of the composite panel body 1 are space portions having the same cross-sectional shape in the left-right direction (width direction) of the composite panel body 1, and will be described later. The panel body 1 can be attached by sliding along the longitudinal direction of the cross beam 3.
[0017]
The upper surface plate of the connecting intermediate member 7 (spacer member) is connected to the scaffold plate 5 by the first bolt nut 16, and the lower surface plate of the connecting intermediate member 7 (spacer member) is connected to the radio wave absorbing panel 6 and the second bolt nut 17. Connected. Further, as shown in FIG. 4 and the like, the scaffolding plate 5 and the radio wave absorbing panel 6 are connected by the first and second bolt nuts 16 and 17 with the connecting intermediate member 7 interposed therebetween, as shown in FIG. Among the first bolts and nuts 16 at the locations, the first bolts and nuts 16 that also serve as connecting and fixing to the cross beam 4 at the front and rear ends of the composite panel body 1 are indicated by 16 'in FIG. There are two ───.
[0018]
A plurality of composite panel bodies 1 are attached along the horizontal beam 4 so as to conceal the horizontal beam 4 by the interval front and rear end portions 10 and 10 on both ends in the front-rear direction. The scaffold plate 5 of the composite panel body 1 is placed on the upper surface 4 a of the transverse beam 4 so as to cover the lateral beam 4 from the upper surface 4 a and is fixed to the transverse beam 4, and the radio wave absorption panel 6 is connected to the scaffold plate 5. 7 is hung through 7 so that the lower surface 4b side of the cross beam 4 is covered. Accordingly, the end portions of the plurality of composite panel bodies 1 have a structure in which the horizontal beam 4 is hidden from the upper and lower surfaces along the longitudinal direction of the horizontal beam 4.
[0019]
According to this mounting structure, the scaffold plate 5 is mounted and fixed on the upper surface of the upper flange plate portion 13 of the cross beam 4, so that even if a load acts on the scaffold plate 5, the work It is extremely safe for people to ride.
Further, the radio wave absorption panel 6 can be disassembled by loosening (removing) the second bolt nut 17, and the radio wave absorption panel 6 can be detached from the connecting intermediate member 7 while leaving the scaffold plate 5.
As shown in FIGS. 4 and 5, decorative panel plates 19, 19 made of thin plates are provided on both sides in the left-right direction of the composite panel body 1.
[0020]
As shown in FIG. 8, the longitudinal dimension B in the front-rear direction of the composite panel body 1 is obtained by subtracting the mounting clearance dimension of about 3 mm to 15 mm from the centerline interval dimension E of the adjacent horizontal beams 4 and 4. It is preferable to set the dimensions. Thereby, while attaching the composite panel body 1, the clearance gap between the adjacent electromagnetic wave absorption panels 6 and 6 can be made small.
Also, the dimension of the distance A is sufficiently larger than the height of the horizontal beam 4 ──2cm ~ 8cm larger ───────────────── 1 is not made thicker (larger).
[0021]
Next, an explanation will be given of the mounting method (construction method) of the composite panel body 1 to the elevated back (girder back) 11. As shown in FIG. 1, the suspension member 2 a is attached to the main girder 12 of the elevated back 11 in a suspended manner. The vertical beam 3 is held in a suspended manner by the suspension member 2 a and in parallel below the main beam 12. Thereafter, as shown in FIG. 2, the horizontal beam 4 is attached to the lower surface of the vertical beam 3 and orthogonal to the plan view by fixing members such as bolts and nuts or welding. The plural (multiple) transverse beams 4 are arranged in parallel to each other in the left-right width direction of the road.
[0022]
Then, the horizontal beam 4 is inserted into the interval front and rear end portion 10 (insertion recess 8) with the entire horizontal beam 4 sandwiched vertically by the interval front and rear end portion 10 of the predetermined interval A between the scaffold plate 5 and the radio wave absorption panel 6. Thus, the composite panel body 1 is attached to the cross beam 4.
As shown in FIG. 3, the composite panel body 1 is attached to the cross beam 4 by inserting the front and rear end portions 10 and 10 on both sides in the front-rear direction of the composite panel body 1 from the end portion 4 c of the cross beam 4 as shown by the arrow S. The composite panel body 1 is sequentially attached while sliding in the longitudinal direction of the cross beam 4. Then, after the composite panel body 1 is positioned at a predetermined fixing position, the cross beam 4 and the composite panel body 1 are fixed in the through hole provided in the upper flange plate portion 13 of the cross beam 4 by the first bolt nut 16 '. .
[0023]
As another attachment method, although not shown, the longitudinal dimension B of the composite panel body 1 and the dimension E between the lateral beams 4 and 4 are appropriately adjusted so that the composite panel body 1 is moved vertically. Tilt and insert one side edge (upper side) in the front-rear direction into one horizontal beam 4, then lift the other side edge (lower side) and fit it into the other horizontal beam 4 (while shifting in the front-rear direction) May be.
That is, both methods are safe because the weight of the composite panel body 1 is once deposited in the cross beam 4 and then fixed.
[0024]
Thereafter, although not shown in the drawing, a fall prevention wire is inserted into eye bolts or eye nuts attached to the upper surfaces (scaffold plates 5) of a plurality of adjacent composite panel bodies 1 to cause the composite panel body 1 to fall unexpectedly. To prevent. What is necessary is just to fix the both ends of this fall prevention wire to the vertical beam 3 or the horizontal beam 4. FIG.
Although not shown, a plate piece is connected between the main beam 12 and the vertical beam 3 by bolts, nuts or welding so as to function as a fixed suspension member, and the structure between the main beam 12 and the vertical beam 3 is used. To be solid. Note that the suspension member 2a is left as it is or a part thereof is removed, and the mounting operation of the radio wave absorption panel 6 is completed.
[0025]
FIG. 9 is a front view showing the mounting structure according to the present invention, in which a plurality of composite panel bodies 1 are arranged side by side along the longitudinal direction of the cross beam 4 without a gap. FIG. 10 is a perspective view showing an embodiment of the composite panel body 1 included in the mounting structure according to the present invention. Other embodiments include those shown in FIGS. The composite panel body 1 of FIGS. 11 and 12 has a scaffold non-existing region 9 that avoids interference with the vertical beam 3 while being fixed to the horizontal beam 4. That is, as shown in FIG. 3 and FIG. 9, the horizontal beam 4 is attached to the lower surface side of the vertical beam 3 through the plurality of vertical beams 3 arranged on the elevated back 11. The composite panel body 1 disposed on the side of the composite panel body 1 has a scaffold plate 5 corresponding to the shape (width dimension) of the vertical beam 3 in order to prevent interference between the scaffold plate 5 of the composite panel body 1 and the lower part of the vertical beam 3. A scaffold non-existing region 9 is formed by omitting a part of the region in a band shape.
[0026]
And the composite panel body 1 (1b) of FIG. 11 is used when the left-right direction edge overlaps the lower surface of the vertical beam 3 along the front-rear direction, and the composite panel body 1 (1c) of FIG. It is used when the center portion in the left-right direction overlaps the lower surface of the vertical beam 3 along the front-rear direction. That is, as shown in FIG. 9, the composite panel body 1 arranged on the lower surface side of the vertical beam 3 includes a scaffold absence region 9 that avoids interference with the lower portion of the vertical beam 3. The composite panel body 1 shown in FIGS. 11 and 12 can be laid by a method of fitting from below the vertical beam 3.
[0027]
Since the present invention is configured as described above and does not require a scaffold assembled from the ground, there is no need to restrict the passage of vehicles traveling under the girder as in the prior art. Then, there is an advantage that the maintenance (inspection / repair) of the back of the girders and the radio wave absorption panel 6 can be easily performed by walking on the scaffolding plate 5 at any time. Furthermore, it is durable against vibration of the elevated road 18.
[0028]
【The invention's effect】
The present invention has the following effects by the above-described configuration.
[0029]
(According to claim 1) Since the scaffolding plate 5 and the radio wave absorption panel 6 are attached as the pre-assembled composite panel body 1, the attaching operation can be simplified. In addition, there is no need to separately assemble or disassemble a scaffold assembled from the ground as in the prior art, and the construction period can be shortened.
And after laying, the horizontal beam 4 does not protrude from the scaffold plate 5 (the horizontal beam 4 is not exposed), and a plurality of scaffold plates 5 can be laid in a planar shape over a wide area. Accordingly, the work on the underpass 11 is safe, and the gap between the adjacent radio wave absorbing panels 6 and 6 on the lower surface 4b side of the horizontal beam 4 can be eliminated, so that the radio wave is not reflected by the lower surface 4b of the horizontal beam 4. The radio wave absorption characteristics are not deteriorated.
[0030]
(According to claim 2) The scaffolding plate 5 can be stably fixed to the cross beam 4 and is safe. Further, by loosening (removing) the bolts and nuts that connect the radio wave absorbing panel 6 and the connecting intermediate member 7, it is possible to remove and replace only the radio wave absorbing panel 6 while leaving the scaffold plate 5. Even if the radio wave absorption panel 6 is removed for replacement, the remaining scaffolding plate 5 can safely repair the elevated back (girder back) 11 and the like.
[0031]
(According to claim 3) The composite panel body 1 can also be arranged at a position directly below the longitudinal beam 3. That is, the scaffolding plate 5 and the radio wave absorption panel 6 can be disposed on the entire surface without any gap without being influenced by the width dimension of the elevated back 11. In addition, a large gap is not formed between the scaffold plate 5 and the longitudinal beam 3, and the entire surface between the longitudinal beams 3 and 3 can be a flat scaffold.
[Brief description of the drawings]
FIG. 1 is a perspective explanatory view showing a first attachment procedure according to an embodiment of the present invention.
FIG. 2 is an explanatory perspective view showing a second attachment procedure.
FIG. 3 is an explanatory perspective view showing a third attachment procedure.
FIG. 4 is a plan view of a composite panel body.
FIG. 5 is a side view of a composite panel body for explaining the mounting structure.
FIG. 6 is a side cross-sectional view of a composite panel body for explaining the mounting structure.
FIG. 7 is a front view of an essential part of a composite panel body for explaining a mounting structure.
FIG. 8 is a side view of the main part of the composite panel body for explaining the mounting structure.
FIG. 9 is a front view of the mounting structure.
FIG. 10 is a perspective view of a composite panel body.
FIG. 11 is a perspective view showing another embodiment of the composite panel body.
FIG. 12 is a perspective view showing still another embodiment of a composite panel body.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Composite panel body 3 Vertical beam 4 Horizontal beam 4a Upper surface 4b Lower surface 5 Scaffold board 6 Electric wave absorption panel 7 Connection intermediate member 9 No scaffolding area
10 interval front and rear end
11 Overpass back A distance

Claims

A composite panel body (1) in which an upper scaffold plate (5) and a lower radio wave absorption panel (6) are integrally connected by a connecting intermediate member (7) with a predetermined vertical distance (A) is provided. The transverse beam (4) is placed so that the front and rear end portions (10) of the predetermined interval (A) of the panel body (1) are inserted into the transverse beam (4) disposed on the underpass (11). A radio wave absorption panel mounting structure in which the composite panel body (1) is attached to the horizontal beam (4) so as to cover and hide the horizontal beam (4) from both the upper and lower sides.

The scaffold plate (5) is mounted on the upper surface (4a) of the transverse beam (4) and fixed to the transverse beam (4), and the radio wave absorbing panel (6) is connected to the scaffold plate (5). The radio wave absorption panel mounting structure according to claim 1, wherein the radio wave absorption panel mounting structure is formed so as to be suspended through the intermediate member (7) so as to cover the lower surface (4 b) side of the transverse beam (4).

The transverse beam (4) is attached to the lower surface side of the longitudinal beam (3) via a plurality of longitudinal beams (3) disposed on the elevated back surface (11), and the lower surface of the longitudinal beam (3). The radio wave absorption panel mounting structure according to claim 1 or 2, wherein the composite panel body (1) disposed on the side has a scaffold-free region (9) that avoids interference with the longitudinal beam (3).