JP2019157468A - Construction passage - Google Patents

Construction passage Download PDF

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JP2019157468A
JP2019157468A JP2018044487A JP2018044487A JP2019157468A JP 2019157468 A JP2019157468 A JP 2019157468A JP 2018044487 A JP2018044487 A JP 2018044487A JP 2018044487 A JP2018044487 A JP 2018044487A JP 2019157468 A JP2019157468 A JP 2019157468A
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piece
flooring
horizontal
main girder
bolt
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JP7002967B2 (en
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政人 鶴巻
Masato Tsurumaki
政人 鶴巻
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Sankyo Tateyama Inc
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Sankyo Tateyama Inc
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Abstract

To provide a construction passage with which the material costs are low, and which is easy to construct.SOLUTION: Each opposing main girder 3 of a construction passage 1A includes an upper piece 3a, a lower piece 3b, and a connection part 3c between the upper piece and the lower piece. The upper piece 3a protrudes in a horizontal direction to the opposing main girder side. The lower piece 3b protrudes in parallel with the upper piece 3a. The connecting part 3c, the upper piece 3a, and the lower piece 3b form a U-shaped cross section. A bolt head engaging groove 11 opened on the opposite side to the opposing main girder is formed in the longitudinal direction in the connecting part 3c. A transverse beam 5 has an L-shaped cross section with a horizontal piece 5a and a vertical piece 5b. The horizontal piece 5a is mounted across the pair of lower pieces 3b, 3b of the main girder. A brace 9 has an L-shaped horizontal cross section. An L-shaped one side piece 9a has a bolt shaft insertion hole 9c. A shaft 20b of a bolt 20 having a head 20a engaged with the bolt head engaging groove 11 of the main girder 3 is inserted into the bolt shaft insertion hole 9c and fixed with a nut 21.SELECTED DRAWING: Figure 1

Description

本発明は、橋梁や道路等の屋外構造物に設置される架設通路に関する。   The present invention relates to a construction passage installed in an outdoor structure such as a bridge or a road.

特許文献１には、一対のホロー形材からなる主桁間に横梁を架け渡してボルト・ナットで取り付けると共に主桁に支柱をボルト・ナットで取り付け、主桁間には床材を架け渡して取り付けた架設通路が開示されている。   In Patent Document 1, a horizontal beam is bridged between main beams made of a pair of hollow shapes and attached with bolts and nuts, and a column is attached to the main beams with bolts and nuts, and a floor material is bridged between the main beams. An attached erection passage is disclosed.

特許第５８７２９５７号公報Japanese Patent No. 5872957

しかし、各主桁はホロー形材であるため、材料の使用量が多いことから材料コストが嵩むという問題があった。
また、主桁はホロー形材の左右の各側面に形成したボルト頭係合溝に係合したボルトで横梁及び支柱を取り付けているため、主桁の左右の各側面で、ボルト頭係合溝に係合したボルトを、横梁及び支柱の取り付け位置に位置合わせする必要があるので、施工し難いという問題があった。 However, since each main girder is a hollow shape, there is a problem that the material cost increases due to the large amount of material used.
In addition, since the main beam is attached to the cross beam and the column with bolts engaged with the bolt head engaging grooves formed on the left and right side surfaces of the hollow shape member, the bolt head engaging grooves are formed on the left and right side surfaces of the main beam. Since it is necessary to align the bolt engaged with the horizontal beam and the mounting position of the column, there is a problem that it is difficult to construct.

そこで、本発明は、材料コストが安価であり、施工し易い架設通路の提供を目的とする。   Then, this invention aims at provision of the construction path | route which material cost is cheap and is easy to construct.

請求項１に記載の発明は、互いに対向配置した一対の主桁と、横梁と、支柱と、主桁間に取り付けた床材とを備え、主桁は、上片と、下片と、上片と下片との連結部を有し、上片は連結部の上端から対向する主桁側へ水平方向に突出しており、下片は連結部の下端から上片と並行に突出しており、連結部と上片と下片とで断面コ字形状を形成しており、連結部には対向する主桁と反対側に開口したボルト頭係合溝が長手方向に形成してあり、横梁は、水平片と垂直片とを有し、水平片と垂直片とで断面Ｌ字形状を成してあり、水平片を一対の主桁の下片間に架け渡して取り付けてあり、支柱は、水平断面がＬ字形状を成しており、Ｌ字の一側片にボルト軸挿通孔を有し、主桁のボルト頭係合溝に頭を係合したボルトの軸をボルト軸挿通孔に挿通してナットで固定してあることを特徴とする架設通路である。   The invention according to claim 1 includes a pair of main girders arranged in opposition to each other, a cross beam, a column, and a flooring attached between the main girders. The main girder includes an upper piece, a lower piece, and an upper piece. It has a connecting part between the piece and the lower piece, the upper piece protrudes in the horizontal direction from the upper end of the connecting part to the opposite main girder side, and the lower piece protrudes in parallel with the upper piece from the lower end of the connecting part, The connecting part, the upper piece, and the lower piece form a U-shaped cross section, and the connecting part has a bolt head engaging groove opened in the longitudinal direction on the opposite side of the opposing main girder. , Having a horizontal piece and a vertical piece, the horizontal piece and the vertical piece have an L-shaped cross section, and the horizontal piece is mounted across the lower pieces of the pair of main girders. The horizontal cross section has an L shape, a bolt shaft insertion hole is provided on one side piece of the L shape, and the bolt shaft with the head engaged with the bolt head engagement groove of the main girder is used as the bolt shaft insertion hole. Insertion It is a bridging passage, characterized in that is fixed with a nut to.

請求項１に記載の発明によれば、主桁は断面コ字形状を成しているので、ホロー形材に比較して材料の使用量を少なくでき、材料コストが安価で且つ軽量化ができる。
主桁と横梁との取り付けにボルト頭係合溝が不要であるから、施工性が良い。
主桁、横梁及び支柱はいずれもホロー形材を用いていないので、全体としても軽量であるから、工場での組み立や施工現場での組み立てのいずれも容易にできるので、この点においても施工性が良い。
横梁及び支柱は断面Ｌ字形状を成しているので、部材の兼用化及び軽量化ができるから、この点においてもコストダウンを図ることができる。 According to the first aspect of the present invention, since the main girder has a U-shaped cross section, the amount of material used can be reduced compared to the hollow shape material, the material cost can be reduced, and the weight can be reduced. .
Since the bolt head engagement groove is not required for the attachment of the main beam and the cross beam, the workability is good.
Since the main girder, cross beam, and column do not use hollow shapes, they are lightweight as a whole, so that they can be easily assembled at the factory or assembled at the construction site. Is good.
Since the cross beam and the support column have an L-shaped cross section, the member can be shared and reduced in weight, so that the cost can be reduced also in this respect.

本発明の第１実施の形態にかかる架設通路の側面図である。It is a side view of the construction channel concerning a 1st embodiment of the present invention. 図１に示すＡ部の拡大図である。It is an enlarged view of the A section shown in FIG. 図１に示すＢ部の拡大図である。It is an enlarged view of the B section shown in FIG. （ａ）は図１に示すＣ−Ｃ断面図であり、（ｂ）は（ａ）に示すＤ−Ｄ断面図である。(A) is CC sectional drawing shown in FIG. 1, (b) is DD sectional drawing shown to (a). 図１に示すＥ−Ｅ側から見た一部を示す正面図である。It is a front view which shows a part seen from the EE side shown in FIG. 図４に示すＦ部の拡大図である。It is an enlarged view of the F section shown in FIG. 図１に示す架設通路の全体の正面図である。It is a front view of the whole construction passage shown in FIG. 図１に示す架設通路の平面図である。It is a top view of the construction channel | path shown in FIG. 図８に示すＨ−Ｈ断面図であって、床材ユニット部分を示す図である。It is HH sectional drawing shown in FIG. 8, Comprising: It is a figure which shows a flooring unit part. 図１に示す架設通路の施工を工程毎に示す斜視図である。It is a perspective view which shows construction of the construction channel | path shown in FIG. 1 for every process. 第２実施の形態にかかる架設通路の側面図である。It is a side view of the construction channel concerning a 2nd embodiment. 第１及び第２実施の形態にかかる架設通路を設置した高架道路の概略図であり、（ａ）は（ｂ）に示すＫ−Ｋ断面図であり、（ｂ）は（ａ）に示すＧ−Ｇ断面図、（ｃ）は（ｂ）を斜め下から見た斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic of the elevated road which installed the construction path concerning 1st and 2nd embodiment, (a) is KK sectional drawing shown to (b), (b) is G shown to (a). -G sectional view, (c) is a perspective view of (b) seen from diagonally below.

以下に、添付図面を参照して本発明の実施の形態を説明する。図１２に本発明の第１実施の形態にかかる架設通路１Ａと第２実施の形態に係る架設通路１Ｂの設置例を示す。第１実施の形態にかかる架設通路１Ａは高架道路８０の下に設置されており、第２実施の形態にかかる架設通路１Ｂは橋脚８２の側面に設置されている。尚、図１２において、符号８３は梯子である。
まず、図１〜図１０を参照して第１実施の形態にかかる架設通路１Ａについて説明する。
図１及び図７に示すように、架設通路１Ａは、一対の主桁３、３と、横梁５と、床材ユニット７と、支柱９とを備えている。
一対の主桁３、３は互いに間隔をあけて対向配置している。
図１及び図２に示すように、主桁３は、上片３ａと、下片３ｂと、上片３ａと下片３ｂとの連結部３ｃを有しており、上片３ａは連結部３ｃの上端から対向する主桁３側へ水平方向に突出しており、下片３ｂは連結部３ｃの下端から上片３ａと並行に突出しており、連結部３ｃと上片３ａと下片３ｂとで断面コ字形状を形成している。
連結部３ｃには、対向する主桁３と反対側に開口したボルト頭係合溝１１が長手方向に形成してある。ボルト頭係合溝１１は、連結部３ｃの上端部と下端部とに形成されている。
各主桁３はアルミニウム合金形材であり、長さは約６ｍである。 Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 12 shows an installation example of the erection passage 1A according to the first embodiment of the present invention and the erection passage 1B according to the second embodiment. The construction passage 1A according to the first embodiment is installed under the elevated road 80, and the construction passage 1B according to the second embodiment is installed on the side surface of the pier 82. In FIG. 12, reference numeral 83 denotes a ladder.
First, an erection passage 1A according to the first embodiment will be described with reference to FIGS.
As shown in FIGS. 1 and 7, the erection passage 1 </ b> A includes a pair of main girders 3, 3, a cross beam 5, a flooring unit 7, and a column 9.
The pair of main girders 3 and 3 are opposed to each other with a space therebetween.
As shown in FIGS. 1 and 2, the main girder 3 has an upper piece 3a, a lower piece 3b, and a connecting portion 3c of the upper piece 3a and the lower piece 3b, and the upper piece 3a is connected to the connecting portion 3c. The lower piece 3b protrudes from the lower end of the connecting portion 3c in parallel with the upper piece 3a, and the connecting portion 3c, the upper piece 3a, and the lower piece 3b A U-shaped cross section is formed.
In the connecting portion 3c, a bolt head engaging groove 11 opened on the opposite side to the opposing main girder 3 is formed in the longitudinal direction. The bolt head engaging groove 11 is formed in the upper end part and lower end part of the connection part 3c.
Each main girder 3 is an aluminum alloy profile and has a length of about 6 m.

図１、図２及び図４に示すように、横梁５は、水平片５ａと垂直片５ｂとを有し、水平片５ａと垂直片５ｂとで断面Ｌ字形状を成しており、水平片５ａを一対の主桁３、３の下片３ｂ、３ｂ間に架け渡して、下片３ｂの下からボルト１４ａの軸を通して上からナット１４ｂで固定してある。
横梁５は、図１０（ａ）（ｂ）に示すように、主桁３、３の長手方向において略等間隔に４箇所に取り付けてある。横梁５はアルミニウム合金形材であり、長さは約６０ｃｍである。 As shown in FIGS. 1, 2 and 4, the cross beam 5 has a horizontal piece 5a and a vertical piece 5b. The horizontal piece 5a and the vertical piece 5b have an L-shaped cross section. 5a is spanned between the lower pieces 3b and 3b of the pair of main girders 3 and 3, and is fixed with a nut 14b from above through the shaft of the bolt 14a from below the lower piece 3b.
As shown in FIGS. 10 (a) and 10 (b), the cross beams 5 are attached at four locations at substantially equal intervals in the longitudinal direction of the main beams 3, 3. The cross beam 5 is an aluminum alloy profile and has a length of about 60 cm.

図１０（ｃ）及び図４に示すように、床材ユニット７は、複数の床材１３と爪先板１５とで一体に構成されている。
図１０（ｃ）及び図８に示すように、各床材１３は、平面視長方形状であり、長辺を隣合わせに並べてあり、本実施の形態では、一つの床材ユニット７に７枚の床材１３を列設してある。
図６に示すように、各床材１３には、天面部１３ａと天面部１３ａを支持する脚部１３ｂとを有し、脚部１３ｂの下端には水平方向に突出した載置片１３ｃが設けてある。各脚部１３ｂの上下方向略中央部にはタッピングホール１３ｄが形成されている。天面部１３ａの上面１３ｇには、ローレット１７が形成されている。
本実施の形態では、床材ユニット７に使用する床材１３には２種類のものが用いられている。図９に示すように、一方の床材１３Ａと他方の床材１３Ｂとである。一方の床材１３Ａは、床材１３の並び方向における一方側端部の上面に凹み段部１３ｅが形成してあり、他方側端部の上面には隣の床材１３の凹み段部１３ｅに重なる水平片部１３ｆが形成してある。図６に示すように、隣り合う床材１３、１３において、凹み段部１３ｅの底面１３ｈと水平片部１３ｆとの間には上下方向の隙間Ｓが形成してある。
図９に示すように、他方の床材１３Ｂは、床材ユニット７の他方側端に配置してあり、一方側端と他方側端との両方に凹み段部１３ｅ、１３ｅを形成してあり、水平片部１３ｆが形成されていない。即ち、他方の床材１３Ｂは、床材ユニット７においてその一方側端部と他方側端部との両方の端部に凹み段部１３ｅ、１３ｅを有する形態となっている。
尚、本実施の形態の説明において、一方の床材１３Ａと他方の床材１３Ｂとを区別して説明する以外は、一方の床材１３Ａと他方の床材１３Ｂともに床材１３として説明する。
各床材１３は、アルミニウム合金形材である。 As shown in FIG. 10C and FIG. 4, the flooring unit 7 is configured integrally with a plurality of flooring materials 13 and toe plates 15.
As shown in FIG. 10 (c) and FIG. 8, each flooring 13 has a rectangular shape in plan view, and its long sides are arranged next to each other. In this embodiment, seven flooring units 7 are arranged in one flooring unit 7. Floor materials 13 are arranged in a row.
As shown in FIG. 6, each flooring 13 has a top surface portion 13 a and a leg portion 13 b that supports the top surface portion 13 a, and a mounting piece 13 c that protrudes in the horizontal direction is provided at the lower end of the leg portion 13 b. It is. A tapping hole 13d is formed at a substantially central portion in the vertical direction of each leg portion 13b. A knurl 17 is formed on the upper surface 13g of the top surface portion 13a.
In the present embodiment, two types of flooring 13 used for the flooring unit 7 are used. As shown in FIG. 9, it is one flooring 13A and the other flooring 13B. One flooring 13 </ b> A has a recessed step 13 e formed on the upper surface of one side end in the direction in which the flooring 13 is arranged, and the upper surface of the other side end is provided with a recessed step 13 e of the adjacent flooring 13. An overlapping horizontal piece 13f is formed. As shown in FIG. 6, in the adjacent floor materials 13, 13, a vertical gap S is formed between the bottom surface 13 h of the recessed step portion 13 e and the horizontal piece portion 13 f.
As shown in FIG. 9, the other flooring 13B is disposed at the other side end of the flooring unit 7, and has recessed step portions 13e and 13e formed at both the one side end and the other side end. The horizontal piece 13f is not formed. In other words, the other floor material 13B has a configuration in which the floor material unit 7 has recessed step portions 13e and 13e at both ends of the one side end and the other side end.
In the description of the present embodiment, both the one floor material 13A and the other floor material 13B will be described as the floor material 13, except that one floor material 13A and the other floor material 13B will be described separately.
Each flooring 13 is an aluminum alloy profile.

図１０（ｃ）に示すように、爪先板１５は、複数の床材１３の両端（短辺側）に取り付けて、複数の床材１３と一体にしてある。
図２に示すように、各爪先板１５は、床材１３の端面から上方に突設する垂直片１５ａと、床材１３の上面１３ｇに当接する水平片１５ｂを有している。爪先板１５において、水平片１５ｂから垂直片１５ａの下端までの寸法Ｈ１は床材１３の厚さと同じ寸法としてある。
爪先板１５の垂直片１５ａには、水平片１５ｂの下側に、長手方向に所定間隔をあけてねじ挿通孔１５ｃが形成されており、ねじ挿通孔１５ｃに挿通するねじ１６で各床材１３のタッピングホール１３ｄに固定されている。
爪先板１５は、アルミニウム合金形材であり、床材ユニット７における爪先板１５の長さは約２ｍである。
図８及び図１０（ｃ）に示すように、本実施の形態では、一つの架設通路１Ａに対して、床材ユニット７を３つ設けてあり、図２に示すように、各床材ユニット７の床材１３を対向する主桁３、３の上片３ａ、３ａ間に架設して、所定の床材１３について上から止めるボルト１８で主桁３の上片３ａに固定されている。 As shown in FIG. 10 (c), the toe plate 15 is attached to both ends (short sides) of the plurality of flooring materials 13 and integrated with the plurality of flooring materials 13.
As shown in FIG. 2, each toe plate 15 has a vertical piece 15 a that protrudes upward from the end surface of the floor material 13 and a horizontal piece 15 b that abuts on the upper surface 13 g of the floor material 13. In the toe plate 15, the dimension H1 from the horizontal piece 15b to the lower end of the vertical piece 15a is the same as the thickness of the flooring 13.
The vertical pieces 15a of the toe plate 15 are formed with screw insertion holes 15c at predetermined intervals in the longitudinal direction below the horizontal pieces 15b, and each flooring 13 is formed by screws 16 inserted into the screw insertion holes 15c. The tapping hole 13d is fixed.
The toe plate 15 is an aluminum alloy profile, and the length of the toe plate 15 in the flooring unit 7 is about 2 m.
As shown in FIG. 8 and FIG. 10 (c), in this embodiment, three flooring units 7 are provided for one erection passage 1A. As shown in FIG. 7 is fixed between the upper pieces 3a and 3a of the main girders 3 and 3 facing each other, and is fixed to the upper piece 3a of the main girders 3 with bolts 18 for stopping the predetermined floor material 13 from above.

図１及び図４（ｂ）に示すように、支柱９は、各主桁３、３に間隔をあけて列設されている。各支柱９は、一側片９ａと他側片９ｂとを有し、一側片９ａと他側片９ｂで水平断面がＬ字形状を成している。図２に示すように、支柱９には、一側片９ａにボルト軸挿通孔９ｃが形成してあり、主桁３のボルト頭係合溝１１に頭２０ａを係合したボルト２０の軸２０ｂをボルト軸挿通孔９ｃに挿通してナット２１で固定してある。支柱９は主桁３に対して、上下２か所のボルト２０及びナット２１で固定されている。
支柱９は、アルミニウム合金形材であり、横梁５と同種のものを用いている。 As shown in FIGS. 1 and 4 (b), the columns 9 are arranged in a row at intervals between the main girders 3 and 3. Each column 9 has one side piece 9a and the other side piece 9b, and the horizontal section of the one side piece 9a and the other side piece 9b is L-shaped. As shown in FIG. 2, the column 9 has a bolt shaft insertion hole 9 c formed in one side piece 9 a, and the shaft 20 b of the bolt 20 in which the head 20 a is engaged with the bolt head engaging groove 11 of the main girder 3. Is inserted into the bolt shaft insertion hole 9 c and fixed with a nut 21. The support column 9 is fixed to the main girder 3 with bolts 20 and nuts 21 at two locations on the upper and lower sides.
The support column 9 is an aluminum alloy shape, and the same type as the cross beam 5 is used.

図１及び図７に示すように、一方の主桁３及び他方の主桁３において、それぞれ列設された支柱９には、横桟２３及び手摺２５が架設されている。
図３に示すように、横桟２３は、断面が略円形を成しており、一側に、ボルト頭係合溝２３ａがその長手方向に形成されている。ボルト頭係合溝２３ａに頭２４ａを係合したボルト２４の軸２４ｂを、支柱９の一側片９ａに形成されたボルト軸挿通孔９ｅに挿通してナット２６で固定してある。
手摺２５は、列設された各支柱９の上端に被せてあり、床材１３側に位置する内側部２５ａと、床材１３と反対側に位置する外側部２５ｂと、内側部２５ａと外側部２５ｂとに連続する天面部２５ｃを有し、内側部２５ａと外側部２５ｂと天面部２５ｃとで断面が略コ字形状を成している。
手摺２５の内側部２５ａには、長手方向に所定間隔をあけてボルト軸挿通孔２５ｄが形成されており、支柱９に形成したボルト軸挿通孔９ｄと手摺のボルト軸挿通孔２５ｄに軸２８ｂを挿通したボルト２８をナット２９で固定してある。
横桟２３及び手摺２５は、それぞれアルミニウム合金形材である。 As shown in FIGS. 1 and 7, in one main girder 3 and the other main girder 3, a horizontal rail 23 and a handrail 25 are installed on the columns 9 arranged in a row.
As shown in FIG. 3, the crosspiece 23 has a substantially circular cross section, and a bolt head engaging groove 23a is formed in the longitudinal direction on one side. The shaft 24b of the bolt 24 with the head 24a engaged with the bolt head engaging groove 23a is inserted into the bolt shaft insertion hole 9e formed in the one side piece 9a of the column 9 and fixed with the nut 26.
The handrail 25 covers the upper ends of the columns 9 arranged in a row, and includes an inner part 25a located on the flooring 13 side, an outer part 25b located on the opposite side of the flooring 13, and an inner part 25a and an outer part. The top surface portion 25c is continuous with 25b, and the inner portion 25a, the outer portion 25b, and the top surface portion 25c have a substantially U-shaped cross section.
Bolt shaft insertion holes 25d are formed in the inner portion 25a of the handrail 25 at a predetermined interval in the longitudinal direction, and the shaft 28b is connected to the bolt shaft insertion hole 9d formed in the support column 9 and the bolt shaft insertion hole 25d of the handrail. The inserted bolt 28 is fixed with a nut 29.
The crosspieces 23 and the handrails 25 are aluminum alloy shapes, respectively.

次に、第１実施の形態にかかる架設通路１Ａの施工（組み立て）について説明する。架設通路１Ａの施工は、工場又は設置現場のいずれで行っても良い。
（１）主桁ユニットの組立工程
図１０（ａ）に示すように、主桁３、３と横梁５で構成された主桁ユニット３５を組み立てる。
主桁ユニット３５の組み立ては、一対の主桁３、３について、互いに上片３ａ、下片３ｂが対向するように互いに間隔をあけて配置し、対向する下片３ｂ、３ｂ間に所定間隔で横梁５を架設する。図２に示すように、横梁５の取り付けは、横梁５の水平片５ａを各主桁３の下片３ｂに形成したボルト軸挿通孔に下からボルト１４ａの軸を通して、上からナット１４ｂで固定する。図１０（ａ）に示すように、横梁５は主桁３の長手方向に略等間隔で４本固定する。
主桁ユニット３５は、長さ約６ｍ、巾約６０ｃｍ、重量約７０ｋｇである。尚、主桁３は１本約３０ｋｇである。 Next, construction (assembly) of the erection passage 1A according to the first embodiment will be described. The construction of the construction passage 1A may be performed at either the factory or the installation site.
(1) Assembling process of main girder unit As shown in FIG. 10A, the main girder unit 35 composed of the main girders 3 and 3 and the cross beam 5 is assembled.
The main girder unit 35 is assembled with a pair of main girders 3 and 3 spaced apart from each other so that the upper piece 3a and the lower piece 3b face each other, and at a predetermined interval between the opposed lower pieces 3b and 3b. A horizontal beam 5 is installed. As shown in FIG. 2, the horizontal beam 5 is attached by fixing the horizontal piece 5a of the horizontal beam 5 through the bolt shaft insertion hole formed in the lower piece 3b of each main girder 3 from below and the nut 14b from above. To do. As shown in FIG. 10A, four horizontal beams 5 are fixed at substantially equal intervals in the longitudinal direction of the main beam 3.
The main girder unit 35 has a length of about 6 m, a width of about 60 cm, and a weight of about 70 kg. One main girder 3 is about 30 kg.

（２）支柱・手摺の取付工程
次に、図１０（ｂ）に示すように、主桁ユニット３５の各主桁３、３に間隔をあけて支柱９を取り付けると共に、支柱９には横桟２３、手摺２５を取り付ける。
図２に示すように、支柱９の取り付けは、主桁３、３に形成してある上下のボルト頭係合溝１１、１１に、その端から各々ボルト２０の頭２０ａを係合して、各ボルト２０を支柱９の取り付け位置まで移動し、支柱９の一側片９ａに形成されているボルト軸挿通孔９ｃにボルト２０の軸２０ｂを挿通して、ナット２１で横から止める。支柱９は主桁３にその上下２箇所で固定する。
図１０（ｂ）に示すように、本実施の形態では、横梁５の取り付け位置に対応して支柱９を取り付けてあり、一方の主桁３に合計４本取り付けている。
その後、図３に示すように、横桟２３のボルト頭係合溝２３ａの端からボルト２４の頭２４ａを係合して各支柱９の位置までずらして、対応する支柱９の位置で、支柱９のボルト軸挿通孔９ｅにボルト２４の軸２４ｂを挿通し、ナット２６で固定する。同様にして上下２本の横桟２３を４本の支柱９に架設して取り付ける。
手摺２５は、各支柱９の上端に天面部２５ｃを被せるように配置し、内側部２５ａのボルト軸挿通孔２５ｄ及び支柱９の一側片９ａに形成したボルト軸挿通孔９ｄにボルト２８の軸２８ｂを挿通して、ナット２９で固定する。
他方の主桁３についても、一方の主桁３と同様に支柱９、横桟２３及び手摺２５を取り付ける。 (2) Post / Handrail Installation Step Next, as shown in FIG. 10 (b), the post 9 is attached to each main girder 3, 3 of the main girder unit 35 with an interval, and the post 9 has a horizontal rail. 23, handrail 25 is attached.
As shown in FIG. 2, the column 9 is attached to the upper and lower bolt head engaging grooves 11 and 11 formed in the main girders 3 and 3 by engaging the heads 20a of the bolts 20 from the ends thereof. Each bolt 20 is moved to the attachment position of the column 9, the shaft 20 b of the bolt 20 is inserted into the bolt shaft insertion hole 9 c formed in the one side piece 9 a of the column 9, and is stopped from the side by the nut 21. The support column 9 is fixed to the main girder 2 at two locations above and below it.
As shown in FIG. 10 (b), in this embodiment, the columns 9 are attached corresponding to the attachment positions of the cross beams 5, and a total of four posts are attached to one main girder 3.
Thereafter, as shown in FIG. 3, the head 24 a of the bolt 24 is engaged from the end of the bolt head engaging groove 23 a of the horizontal rail 23 and shifted to the position of each column 9. The shaft 24b of the bolt 24 is inserted into the 9 bolt shaft insertion hole 9e and fixed with the nut 26. Similarly, two upper and lower horizontal bars 23 are installed on the four columns 9.
The handrail 25 is arranged so that the top surface portion 25c covers the upper end of each support column 9, and the shaft of the bolt 28 is inserted into the bolt shaft insertion hole 25d of the inner portion 25a and the bolt shaft insertion hole 9d formed in the one side piece 9a of the support column 9. 28 b is inserted and fixed with a nut 29.
For the other main girder 3, as in the case of the one main girder 3, the column 9, the horizontal rail 23 and the handrail 25 are attached.

（３）床材ユニットの取付工程
図１０（ｃ）に示すように、床材ユニット７を用意する。
図９に示すように、床材ユニット７は、床材１３の並び方向の一方側と他方側に凹み段部１３ｅを有する他方の床材１３Ｂを端に配置して、他方の床材１３Ｂの一方側の隣に一方の床材１３Ａを配置し、一方の床材１３Ａの水平片部１３ｆを他方の床材１３Ｂの凹み段部１３ｅの底面１３ｈに重ねて配置する。更に、一方の床材１３Ａの一方側の隣に一方の床材１３Ａを順次長辺を隣合わせにして配置するが、各一方の床材１３Ａは、水平片部１３ｆを他方の床材の凹み段部１３ｅの底面１３ｈに重ねる。このようにして、他方の床材１３Ｂを端にして一方の床材１３Ａを６枚、合計７枚の床材１３を並べる（図８及び図１０（ｃ）参照）。
次に、７枚並べた床材１３の左右端に爪先板１５を配置するが、図２に示すように、爪先板１５の水平片１５ｂが各床材１３の上面１３ｇに当接する位置に床材１３を位置決めした後、横から止めるねじ１６を爪先板１５のねじ挿通孔１５ｃに挿通して各床材１３のタッピングホール１３ｄに螺合する。
以上のようにして、図１０（ｃ）に示すように、並べて配置した７枚の床材１３に対してその左右端に爪先板１５を取り付けた床材ユニット７を組み立てる。
次に、図１０（ｃ）及び図１に示すように、各床材ユニット７の左右端を対向する主桁３、３の上片３ａ、３ａ間に架設し、床材１３の上からボルト１８で上片３ａに固定する。図８に示すように、ボルト１８による固定は、すべての床材１３に行わず、床材ユニット７の一方側端及び他方側端にある床材１３、１３とこれらの略中間に位置する床材１３の合計３枚の床材１３に対して行う。
本実施の形態では、合計３つの床材ユニット７を用意して、主桁３、３の長手方向に３つ並べて固定する。
以上のようにして、図１、図７及び図８に示す架設通路１Ａを組み立てる。 (3) Step of attaching flooring unit As shown in FIG. 10C, a flooring unit 7 is prepared.
As shown in FIG. 9, the flooring unit 7 has the other flooring 13 </ b> B having recessed step portions 13 e on one side and the other side in the arrangement direction of the flooring 13 at the end, One flooring 13A is placed next to one side, and the horizontal piece 13f of one flooring 13A is placed over the bottom surface 13h of the recessed step 13e of the other flooring 13B. Further, one floor material 13A is arranged next to one floor material 13A next to each other, with the long sides next to each other. Each of the floor materials 13A has a horizontal piece 13f formed in a recessed step of the other floor material. It overlaps with the bottom surface 13h of the part 13e. In this way, a total of seven flooring materials 13 are arranged, with the other flooring material 13B at the end and six flooring materials 13A (see FIG. 8 and FIG. 10C).
Next, the toe plate 15 is disposed on the left and right ends of the seven flooring materials 13 arranged. As shown in FIG. 2, the floor piece 15 b of the toe plate 15 is placed at a position where it abuts the upper surface 13 g of each flooring 13. After positioning the material 13, a screw 16 to be secured from the side is inserted into the screw insertion hole 15 c of the toe plate 15 and screwed into the tapping hole 13 d of each floor material 13.
As described above, as shown in FIG. 10 (c), the flooring unit 7 in which the toe plates 15 are attached to the left and right ends of the seven flooring materials 13 arranged side by side is assembled.
Next, as shown in FIG. 10 (c) and FIG. 1, the left and right ends of each flooring unit 7 are installed between the upper pieces 3 a, 3 a of the opposing main girders 3, 3, 18 is fixed to the upper piece 3a. As shown in FIG. 8, the fixing with the bolts 18 is not performed on all the flooring materials 13, but the flooring materials 13, 13 at the one side end and the other side end of the flooring unit 7 and the floor located substantially in the middle thereof. This is performed for a total of three flooring materials 13.
In the present embodiment, a total of three flooring units 7 are prepared, and three are arranged side by side in the longitudinal direction of the main girders 3 and 3 and fixed.
As described above, the erection passage 1A shown in FIGS. 1, 7, and 8 is assembled.

図１０（ｄ）に示すように、架設通路１Ａは、例えば、高所作業車３１や足場３３での作業により高架道路８０の橋脚８２や側壁８１に設けてあるＨ鋼材等の躯体８５にボルト・ナットで固定する。   As shown in FIG. 10 (d), for example, the erection passage 1 </ b> A is bolted to a housing 85 such as an H steel material provided on the bridge pier 82 or the side wall 81 of the elevated road 80 by work on the aerial work vehicle 31 or the scaffold 33.・ Fix with nuts.

第１実施の形態にかかる架設通路１Ａの作用効果について説明する。
図１及び図２に示すように、対向する一対の主桁３は、各々上片３ａ、下片３ｂ、これらの連結部３ｃで断面コ字形状を成しているので、ホロー形材に比較して材料の使用量を少なくでき、材料コストが安価で且つ軽量化ができる。
各主桁３、３と横梁５との取り付けは、主桁３の下片３ｂと横梁５の水平片５ａを上下方向から止めるボルト１４ａとナット１４ｂで固定しており、主桁３、３に横梁５を取り付けるためのボルト頭係合溝が不要であるから、施工性が良い。
主桁３は断面コ字形状であり、横梁５及び支柱９は断面Ｌ字形状であり、いずれもホロー形材を用いていないので、架設通路１Ａの全体としても軽量であるから、工場での組み立や施工現場での組み立てのいずれも容易にできるので、この点においても施工性が良い。
図４に示すように、横梁５及び支柱９は断面Ｌ字形状を成しているので、同種のものを用いることができ、横梁５と支柱９との間で部材の兼用化及び軽量化ができるから、この点においてもコストダウンを図ることができる。 The effects of the erection passage 1A according to the first embodiment will be described.
As shown in FIGS. 1 and 2, the pair of main girders 3 facing each other has an upper piece 3a, a lower piece 3b, and a connecting portion 3c that are U-shaped in cross section. Thus, the amount of material used can be reduced, the material cost is low, and the weight can be reduced.
The main girders 3 and 3 and the cross beam 5 are attached by fixing the lower piece 3b of the main girder 3 and the horizontal piece 5a of the cross beam 5 with bolts 14a and nuts 14b from above and below. Since the bolt head engaging groove for attaching the cross beam 5 is unnecessary, the workability is good.
The main girder 3 has a U-shaped cross section, and the cross beam 5 and the support column 9 have an L-shaped cross section. Since neither of them uses a hollow shape, the entire construction passage 1A is light in weight. Since assembly and assembly at the construction site can be easily performed, the workability is also good in this respect.
As shown in FIG. 4, since the cross beam 5 and the support column 9 have an L-shaped cross section, the same type can be used. Therefore, the cost can be reduced also in this respect.

図１及び図１０（ｃ）に示すように、爪先板１５と複数の床材１３とからなる床材ユニット７を形成しているため、施工時に床材ユニット７を主桁３、３に固定することで、複数の床材１３と爪先板１５とを同時に取り付けできるから、組み立て易い。
床材ユニット７には、爪先板１５が一体に設けてあるので、従来技術のように支柱に爪先板を固定していないので、爪先板１５の取り付け順序が支柱９との関係で制限されないから、組立順序の自由度が高い。 As shown in FIG.1 and FIG.10 (c), since the flooring unit 7 which consists of the toe board 15 and the several flooring 13 is formed, the flooring unit 7 is fixed to the main girders 3 and 3 at the time of construction. By doing so, the plurality of flooring materials 13 and the toe plate 15 can be attached at the same time, which makes it easy to assemble.
Since the toe plate 15 is integrally provided in the flooring unit 7, the toe plate is not fixed to the support column as in the prior art, so the order of attaching the toe plate 15 is not limited by the relationship with the support column 9. The degree of freedom in assembly order is high.

図８に示すように、複数の床材１３で床材ユニット７を構成しているので、床材１３は一枚ずつ主桁３に固定しなくて済み、所定の床材１３のみを固定すれば足りるので、固定箇所を少なくできる。
床材ユニット７は、床材１３の並び方向の一方側に凹み段部１３ｅを形成して他方側に水平片部１３ｆを形成した一方の床材１３Ａと、一方側及び他方側の両方に凹み段部１３ｅを形成した他方の床材１３Ｂを用いることで、床材ユニット７の一方側端と他方側端とに凹み段部１３ｅを設けることができるから左右勝手がない。
床材ユニット７は、その爪先板１５の長さを２ｍとして、複数の床材ユニット７で架設通路１Ａを組み立てているので、一つの床材ユニット７を軽量にでき、運搬や施工が容易である。 As shown in FIG. 8, since the flooring unit 7 is composed of a plurality of flooring materials 13, the flooring material 13 does not have to be fixed to the main beam 3 one by one, and only a predetermined flooring material 13 is fixed. Since it is sufficient, the number of fixing points can be reduced.
The flooring unit 7 has a recessed step 13e formed on one side in the direction in which the flooring 13 is arranged and a horizontal piece 13f formed on the other side, and is recessed on both one side and the other side. By using the other floor material 13B in which the step portion 13e is formed, the recessed step portion 13e can be provided at the one side end and the other side end of the floor material unit 7, so there is no right and left hand.
Since the flooring unit 7 has a toe plate 15 having a length of 2 m and the construction passage 1A is assembled with a plurality of flooring units 7, one flooring unit 7 can be reduced in weight and can be easily transported and constructed. is there.

図２に示すように、床材ユニット７において、爪先板１５は床材１３の上面１３ｇに当接する水平片１５ｂを有するから、床材１３を爪先板１５に取り付ける際に各床材１３の上下方向の位置決めができるので、ユニット化しやすい。
爪先板１５は水平片１５ｂから垂直片１５ａの下端までの寸法Ｈ１が床材１３の厚さと略同じであるから、床材１３の端部小口を垂直片１５ａで隠すことができ、外観が良い。
図１及び図２に示すように、主桁３は上片３ａ、下片３ｂ及び連結部３ｃとで断面コ字形状を成しており、床材ユニット７は、主桁３の上片３ａに上から止めるボルト１８により固定できるので、作業性が良い。
床材１３についても、床材１３は対向する主桁３の上片３ａ、３ａ間に架け渡して取り付けてあるので、床材１３の取り付けが容易にできる。
図２に示すように、爪先板１５にはその長手方向に所定間隔で床材１３に取り付けるねじ挿通孔１５ｃが形成してあるから、ねじ１６をねじ挿通孔１５ｃに挿通して床材１３に形成してあるタッピングホール１３ｄに固定できるから、爪先板１５の取り付けが容易にできる。
図６に示すように、床材１３は、配列方向の一方側に凹み段部１３ｅを形成して他方側に水平片部１３ｆを形成し、水平片部１３ｆが隣り合う床材１３の凹み段部１３ｅの底面１３ｈに重なり、凹み段部１３ｅの底面１３ｈと水平片部１３ｆとの間に上下方向の隙間Ｓを形成しているから、水平片部１３ｆで隣り合う床材との間の隙間を隠しながら、隙間Ｓで水抜きができる。
床材１３は、上面１３ｇにローレット１７を付けてあるから、滑り難い。
各支柱９の上端には手摺２５を被せて架設してあるので、架設通路１Ａでの移動がし易い。 As shown in FIG. 2, in the flooring unit 7, the toe plate 15 has a horizontal piece 15 b that comes into contact with the upper surface 13 g of the flooring 13, so that when the flooring 13 is attached to the toeboard 15, Easy to unitize because the direction can be positioned.
Since the toe plate 15 has a dimension H1 from the horizontal piece 15b to the lower end of the vertical piece 15a that is substantially the same as the thickness of the flooring 13, the end edge of the flooring 13 can be hidden by the vertical piece 15a and the appearance is good. .
As shown in FIGS. 1 and 2, the main girder 3 has a U-shaped cross section with an upper piece 3a, a lower piece 3b, and a connecting portion 3c, and the flooring unit 7 has an upper piece 3a of the main girder 3. Since it can fix with the volt | bolt 18 stopped from above, workability | operativity is good.
As for the flooring 13, the flooring 13 is mounted between the upper pieces 3 a and 3 a of the opposing main girder 3 so that the flooring 13 can be easily attached.
As shown in FIG. 2, the toe plate 15 is formed with screw insertion holes 15c attached to the flooring 13 at predetermined intervals in the longitudinal direction thereof, so that the screws 16 are inserted into the screw insertion holes 15c to the flooring 13. Since it can fix to the tapping hole 13d currently formed, attachment of the toe board 15 can be performed easily.
As shown in FIG. 6, the floor material 13 is formed with a recessed step portion 13 e on one side in the arrangement direction and a horizontal piece portion 13 f on the other side, and the horizontal piece portion 13 f is a recessed step of the adjacent floor material 13. Since the vertical gap S is formed between the bottom surface 13h of the recessed step portion 13e and the horizontal piece portion 13f, the gap between the floor piece adjacent to the horizontal piece portion 13f is overlapped with the bottom surface 13h of the portion 13e. Water can be drained in the gap S while concealing water.
The flooring 13 is difficult to slip because the knurling 17 is attached to the upper surface 13g.
Since the upper end of each support column 9 is covered with a handrail 25, it is easy to move in the installation path 1A.

以下に本発明の他の実施の形態を説明するが、以下に説明する実施の形態において、上述した第１実施の形態と同一の作用効果を奏する部分には同一の符号を付することによりその部分の詳細な説明を省略し、以下の説明では第１実施の形態と主に異なる点を説明する。
図１１に、本発明の第２実施の形態にかかる架設通路１Ｂを示す。この第２実施の形態では、一対の主桁３、３において、一方の主桁３にのみ支柱９を取り付けると共にその支柱９に横桟２３と手摺２５を取り付けてあり、他方の主桁３には支柱９、横桟２３及び手摺２５を設けていないことが、上述した第１実施の形態と異なっている。
この第２実施の形態にかかる架設通路１Ｂは、図１２に示すように、一対の主桁３について一方の主桁３側に屋外構造物の壁がある場合に使用するものである。
この第２実施の形態によれば、上述した第１実施の形態と同様の作用効果を奏することができる。
更に、第２実施の形態にかかる架設通路１Ｂは、第１実施の形態にかかる架設通路１Ａに対して、一方の主桁３側のみに支柱９、横桟２３及び手摺２５を取り付ける構成であるから、同じ構成部品と同じ工程で施工できる。 Other embodiments of the present invention will be described below. In the embodiments described below, parts having the same operational effects as those of the above-described first embodiment are denoted by the same reference numerals. A detailed description of the portion is omitted, and the following description will mainly describe differences from the first embodiment.
FIG. 11 shows an erection passage 1B according to the second embodiment of the present invention. In the second embodiment, in the pair of main girders 3 and 3, the support column 9 is attached only to one of the main girders 3 and the horizontal rail 23 and the handrail 25 are attached to the support column 9. Is different from the first embodiment described above in that the column 9, the cross rail 23, and the handrail 25 are not provided.
As shown in FIG. 12, the installation passage 1 </ b> B according to the second embodiment is used when a pair of main girders 3 has a wall of an outdoor structure on one main girder 3 side.
According to this 2nd Embodiment, there can exist an effect similar to 1st Embodiment mentioned above.
Furthermore, the construction passage 1B according to the second embodiment is configured to attach the column 9, the crosspiece 23, and the handrail 25 only to one main girder 3 side with respect to the construction passage 1A according to the first embodiment. Therefore, it can be constructed in the same process as the same component.

本発明は、上述した実施の形態に限らず、本発明の要旨を逸脱しない範囲で種々変形可能である。
例えば、図１０（ａ）〜（ｃ）で示す架設通路１Ａの組み立ては、すべて工場で行っても良いし、図１０（ａ）（ｂ）の組み立てと、床材ユニット７の組み立てを工場で行い、図１０（ｃ）に示す床材ユニット７を対向する主桁３、３を取り付ける工程を施工現場で行うものでも良い。また、床材ユニット７の組み立てのみを工場で行っても良い。
図１０（ｂ）で示すように、支柱９、横桟２３及び手摺２５を工場で組み立てて支柱ユニットにして、図１０（ａ）に示す主桁ユニット３５の各主桁３、３に支柱ユニットの支柱９を取り付けても良い。
図１０（ａ）〜（ｃ）に示す架設通路１Ａの組み立て工程において、（ａ）に示す主桁ユニット３５を組み立てた後に、（ｃ）に示す床材ユニット７を取り付け、その後（ｂ）に示すように、支柱９、横桟２３及び手摺２５を取り付けても良い。
複数の床材１３と爪先板１５とを一体にした床材ユニット７を形成することに限らず、
床材１３と爪先板１５を別体にして、各床材１３を対向する主桁３の上片３ａ、３ａ間に架け渡して上から止めるボルト１８で上片３ａ、３ａに取り付けた後に、各床材１３の両端に爪先板５を取り付けても良い。床材１３は上から止めるボルト１８で取り付けできるので、床材１３の取り付けが容易にできる。 The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention.
For example, the assembly of the erection passage 1A shown in FIGS. 10A to 10C may be performed at the factory, or the assembly of FIGS. 10A and 10B and the assembly of the flooring unit 7 may be performed at the factory. It is also possible to perform the process of attaching the main girders 3 and 3 facing the flooring unit 7 shown in FIG. Moreover, you may perform only the assembly of the flooring unit 7 in a factory.
As shown in FIG. 10 (b), the column 9, the cross rail 23 and the handrail 25 are assembled at the factory to form a column unit, and the column unit is attached to each main beam 3, 3 of the main beam unit 35 shown in FIG. 10 (a). A post 9 may be attached.
In the assembly process of the erection passage 1A shown in FIGS. 10 (a) to 10 (c), after assembling the main girder unit 35 shown in FIG. 10 (a), the flooring unit 7 shown in FIG. As shown, the column 9, the crosspiece 23, and the handrail 25 may be attached.
Not only to form the flooring unit 7 in which a plurality of flooring 13 and the toe plate 15 are integrated,
After attaching the flooring 13 and the toe plate 15 separately, the flooring 13 is attached to the upper pieces 3a, 3a with the bolts 18 that are bridged between the upper pieces 3a, 3a of the opposing main girder 3 and stopped from above. Toe plates 5 may be attached to both ends of each flooring 13. Since the flooring 13 can be attached with bolts 18 that are stopped from above, the flooring 13 can be easily attached.

１Ａ 架設通路（第１実施の形態）
１Ｂ 架設通路（第２実施の形態）
３ 主桁
３ａ 上片
３ｂ 下片
３ｃ 連結部
５ 横梁
５ａ 水平片
５ｂ 垂直片
９ 支柱
９ａ 一側片
９ｃ ボルト軸挿通孔
１１ ボルト頭係合溝
１３ 床材
２０ ボルト
２０ａ 頭
２０ｂ 軸
２１ ナット 1A Construction passage (first embodiment)
1B Construction passage (second embodiment)
3 main beam 3a upper piece 3b lower piece 3c connecting portion 5 horizontal beam 5a horizontal piece 5b vertical piece 9 post 9a one side piece 9c bolt shaft insertion hole 11 bolt head engaging groove 13 floor material 20 bolt 20a head 20b shaft 21 nut

Claims (1)

互いに対向配置した一対の主桁と、横梁と、支柱と、主桁間に取り付けた床材とを備え、主桁は、上片と、下片と、上片と下片との連結部を有し、上片は連結部の上端から対向する主桁側へ水平方向に突出しており、下片は連結部の下端から上片と並行に突出しており、連結部と上片と下片とで断面コ字形状を形成しており、連結部には対向する主桁と反対側に開口したボルト頭係合溝が長手方向に形成してあり、横梁は、水平片と垂直片とを有し、水平片と垂直片とで断面Ｌ字形状を成してあり、水平片を一対の主桁の下片間に架け渡して取り付けてあり、支柱は、水平断面がＬ字形状を成しており、Ｌ字の一側片にボルト軸挿通孔を有し、主桁のボルト頭係合溝に頭を係合したボルトの軸をボルト軸挿通孔に挿通してナットで固定してあることを特徴とする架設通路。   The main girder includes a pair of main beams arranged opposite to each other, a cross beam, a column, and a flooring attached between the main beams. The main beam includes an upper piece, a lower piece, and a connecting portion between the upper piece and the lower piece. The upper piece protrudes in the horizontal direction from the upper end of the connecting portion to the opposing main girder side, and the lower piece protrudes from the lower end of the connecting portion in parallel with the upper piece, and the connecting portion, the upper piece, and the lower piece The connecting part has a bolt head engaging groove opened in the longitudinal direction on the opposite side of the opposing main beam, and the cross beam has a horizontal piece and a vertical piece. The horizontal piece and the vertical piece are L-shaped in cross section, and the horizontal piece is mounted between the lower pieces of the pair of main girders. The support has a L-shaped horizontal cross section. A bolt shaft insertion hole is provided on one side piece of the L-shape, and the bolt shaft with the head engaged with the bolt head engagement groove of the main girder is inserted into the bolt shaft insertion hole and fixed with a nut. Erection passage, characterized in that.
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Publication number Priority date Publication date Assignee Title
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JP2000352015A (en) * 1999-06-11 2000-12-19 Nikkei Katazai Kk Bridge lower part permanent passage
JP2003239532A (en) * 2002-02-21 2003-08-27 Shinoda Seisakusho:Kk Walkway unit and manufacturing method for the same
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JP2015034394A (en) * 2013-08-08 2015-02-19 東日本高速道路株式会社 Inspection passage
JP5872957B2 (en) * 2012-04-27 2016-03-01 株式会社住軽日軽エンジニアリング Bridge inspection passage

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Publication number Priority date Publication date Assignee Title
JP2000352015A (en) * 1999-06-11 2000-12-19 Nikkei Katazai Kk Bridge lower part permanent passage
JP2003239532A (en) * 2002-02-21 2003-08-27 Shinoda Seisakusho:Kk Walkway unit and manufacturing method for the same
JP5872957B2 (en) * 2012-04-27 2016-03-01 株式会社住軽日軽エンジニアリング Bridge inspection passage
JP2015034394A (en) * 2013-08-08 2015-02-19 東日本高速道路株式会社 Inspection passage
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