JP5872957B2

JP5872957B2 - Bridge inspection passage

Info

Publication number: JP5872957B2
Application number: JP2012103901A
Authority: JP
Inventors: 勤大島; 望堀江; 宏明金澤; 剛彦中東
Original assignee: Sumikei Nikkei Engineering Co Ltd
Current assignee: Nippon Engineering Co Ltd
Priority date: 2012-04-27
Filing date: 2012-04-27
Publication date: 2016-03-01
Anticipated expiration: 2032-04-27
Also published as: JP2013231305A

Description

本発明は、橋梁の点検や補修のために設けられた橋梁用点検通路に関する。 The present invention relates to a bridge inspection passage provided for inspection and repair of a bridge.

橋梁には、点検により損傷箇所を早期発見しその損傷箇所を補修するために、点検通路が設けられている。こういった点検通路は、従来、鋼材を用いて製作されていたが、施工性、耐食性を考慮して、特許文献１に示されたような、床材、柱材等の主要な構成部材をアルミニウム合金製の押出形材で製作した点検通路が提案されている。 The bridge is provided with an inspection passage in order to detect the damaged part at an early stage by inspection and repair the damaged part. Conventionally, such inspection passages have been manufactured using steel materials, but in consideration of workability and corrosion resistance, main components such as floor materials and column materials as shown in Patent Document 1 are used. An inspection passage made of an aluminum alloy extruded profile has been proposed.

特開２０００−３５２０１５号公報JP 2000-352015 A

特許文献１に記載されたアルミニウム合金製の点検通路では、床材と橋梁の主桁の延在方向が同じであるため、主桁に直交する方向に張り出す副梁に床材を載置する必要がある。このような点検通路では、多くの副梁を必要とするため、副梁と主桁とのボルト接合箇所が多くなる結果、副梁を構成する押出形材の形状も多くのボルト接合を考慮した複雑なものとなってしまい、アルミニウム合金の長所の一つである施工性の良さが低下してしまうという問題があった。 In the inspection passage made of aluminum alloy described in Patent Document 1, since the extending direction of the main girder of the flooring and the bridge is the same, the flooring is placed on the secondary beam extending in a direction orthogonal to the main girder. There is a need. In such an inspection path, many secondary beams are required, and as a result, the number of bolt joints between the secondary beam and the main girder increases. As a result, the shape of the extruded profile constituting the secondary beam also takes into account many bolt joints. There is a problem in that it becomes complicated and the workability, which is one of the advantages of the aluminum alloy, decreases.

このような観点から、本発明は、軽量且つ耐食性に優れたアルミニウム合金製の押出形材を用いて、施工性に優れた橋梁用点検通路を提供することを課題とする。 From such a viewpoint, an object of the present invention is to provide an inspection passage for a bridge excellent in workability using an extruded shape made of aluminum alloy that is lightweight and excellent in corrosion resistance.

このような課題を解決するための請求項１に係る発明は、アルミニウム合金製の押出形材からなる一対の主梁と、これら主梁同士を連結する複数の副梁と、一対の前記主梁間に架け渡される複数の床材と、前記主梁に固定された手摺支柱と、前記床材の通路幅方向端部に設けられた爪先板とを備えた橋梁用点検通路であって、前記床材の下部には、補強リブが形成され、前記補強リブが前記主梁の押出方向に直交する方向に延在するように、前記床材が配置されており、前記主梁の側面には、前記副梁および前記手摺支柱の少なくとも一方を固定するボルトの頭部が挿入されるボルト用溝が前記主梁の押出方向に沿って形成され、前記爪先板は、前記手摺支柱に固定されていることを特徴とする橋梁用点検通路である。 The invention according to claim 1 for solving such a problem includes a pair of main beams made of an extruded shape made of an aluminum alloy, a plurality of sub beams connecting the main beams, and a pair of the main beams. A bridge inspection passage comprising a plurality of flooring materials spanned over, a handrail post fixed to the main beam, and a toe plate provided at an end of the flooring in the passage width direction , Reinforcing ribs are formed in the lower part of the material, and the flooring is arranged so that the reinforcing ribs extend in a direction orthogonal to the extrusion direction of the main beam. A bolt groove into which a bolt head for fixing at least one of the sub beam and the handrail post is inserted is formed along the pushing direction of the main beam, and the toe plate is fixed to the handrail post. This is a bridge inspection passage.

このような構成によれば、床材が主梁の上に載置されており、さらに補強リブを有しているので、副梁に対する強度上の負荷を低減することができる。つまり、副梁は、床材を支持する必要がなく、主梁同士を一定の間隔を保持しながら連結できればよい。したがって、床材と副梁との取り合いや、床材から副梁への荷重負荷を考慮する必要がなくなるので、接合箇所の低減および副梁の形状の簡略化を図ることができ、施工性の向上が達成できる。また、床材は一対の主梁間に架け渡されているので、床材の長さは通路幅程度で済み、取扱いが容易になる。また、ボルト用溝を主梁の押出方向に沿って形成したことによって、ボルトの設置位置を任意に設定できる。つまり、副梁や手摺支柱を任意の位置に設置できるので、副梁や手摺支柱の設置位置を他の構造物等と干渉しない位置にずらすことができる。また、ボルト用溝は、主梁の押出時に一体成型できるので、容易に形成できる。さらに、爪先板を手摺支柱に固定するという簡単な作業で、施工中および完成後に床材上からの物が落下するのを防止できる。 According to such a configuration, since the flooring is placed on the main beam and further has the reinforcing rib, it is possible to reduce the load on the strength of the secondary beam. That is, it is not necessary for the secondary beam to support the floor material, and it is only necessary to connect the main beams while maintaining a certain distance. Therefore, there is no need to consider the connection between the flooring and the secondary beam and the load load from the flooring to the secondary beam, so that the number of joints can be reduced and the shape of the secondary beam can be simplified. Improvement can be achieved. Further, since the flooring material is bridged between the pair of main beams, the length of the flooring material is only about the width of the passage, and the handling becomes easy. Moreover, the bolt installation position can be arbitrarily set by forming the bolt groove along the extrusion direction of the main beam. That is, since the sub beam and the handrail post can be installed at an arbitrary position, the installation position of the sub beam and the handrail post can be shifted to a position that does not interfere with other structures. Moreover, since the bolt groove can be integrally formed when the main beam is extruded, it can be easily formed. Furthermore, the simple work of fixing the toe plate to the handrail post can prevent objects from falling from the floor material during construction and after completion.

請求項２に係る発明は、前記床材同士は継手材を介して接合されており、前記床材の接合側端部となる端部の前記補強リブには、接合方向外側に向かって開口するとともに、上部垂直片と下部垂直片とによって狭隘開口状に形成された係合溝が設けられ、前記継手材は、接合される前記床材同士の前記係合溝の開口部内に挿入可能な基部と、この基部の上端および下端の両側にそれぞれ突設されるとともに、前記係合溝と係合する係合片とを備えてなり、前記床材の接合側端部同士が当接した状態で、且つ隣り合う前記上部垂直片同士が前記継手材の上側の一対の前記係合片で挟まれるとともに、隣り合う前記下部垂直片同士が前記継手材の下側の一対の前記係合片で挟まれた状態で、前記床材同士が連結されていることを特徴とする。 In the invention according to claim 2, the floor materials are joined to each other through a joint material, and the reinforcing ribs at the end portions that become the joining side end portions of the floor materials are opened toward the outside in the joining direction. In addition, an engagement groove formed in a narrow opening shape by the upper vertical piece and the lower vertical piece is provided, and the joint material can be inserted into the opening of the engagement groove between the floor materials to be joined. And an engagement piece that engages with the engagement groove and protrudes on both sides of the upper end and the lower end of the base portion, and the joining side end portions of the flooring material are in contact with each other. The adjacent upper vertical pieces are sandwiched between the pair of engaging pieces on the upper side of the joint material, and the adjacent lower vertical pieces are sandwiched between the pair of engaging pieces on the lower side of the joint material. In this state, the floor materials are connected to each other .

このような構成によれば、係合溝と係合片が接触して係合するので、床材同士を長手方向全長に渡って連結させることができ、床材同士を確実に接合できる。また、継手部材が補強リブの係合溝内に収容されるので、床材の接合強度の向上と外観の向上が両立できる。床材の厚さ方向に負荷がかかって接合部に変形が生じる場合であっても、係合溝と係合片が接触して係合することができる。 According to such a configuration, since the engaging groove and the engaging piece come into contact with each other, the flooring materials can be connected over the entire length in the longitudinal direction, and the flooring materials can be reliably joined. In addition, since the joint member is accommodated in the engagement groove of the reinforcing rib, it is possible to improve both the bonding strength of the flooring and the appearance. Even when a load is applied in the thickness direction of the flooring and the joint portion is deformed, the engagement groove and the engagement piece can be brought into contact and engaged.

請求項３に係る発明は、前記上部垂直片と前記下部垂直片の内方側面には、凹凸曲面からなる係合受け部が形成され、前記係合片には、前記凹凸曲面に摺接可能な凹凸係合面が形成されており、前記凹凸曲面と前記凹凸係合面とが接触した状態で、前記係合溝と前記係合片とが係合されていることを特徴とする。ここで、接触とは、面接触と線接触の両方を含む。面接触とは、凹凸曲面と凹凸係合面の少なくとも一部が面同士で接触することをいい、線接触とは、凹凸曲面と凹凸係合面の少なくとも一部が線状に接触することをいう。このような構成によれば、係合溝と係合片との接触が確実に為され、床材同士をガタツキなく接合できる。 According to a third aspect of the present invention, an engagement receiving portion made of an uneven curved surface is formed on the inner side surface of the upper vertical piece and the lower vertical piece, and the engagement piece can slide on the uneven curved surface. An uneven engagement surface is formed , and the engagement groove and the engagement piece are engaged with each other in a state where the uneven curved surface and the uneven engagement surface are in contact with each other. Here, the contact includes both surface contact and line contact. Surface contact means that at least a part of the concave and convex curved surface and the concave and convex engaging surface are in contact with each other, and line contact means that at least a part of the concave and convex curved surface and the concave and convex engaging surface are in linear contact. Say. According to such a configuration, the engagement groove and the engagement piece are reliably brought into contact with each other, and the flooring materials can be joined without backlash.

請求項４に係る発明は、前記爪先板は、アルミニウム合金製の押出形材からなり、前記爪先板の外側面には、ボルトの頭部が挿入されるボルト用溝が押出方向に沿って形成されていることを特徴とする。 According to a fourth aspect of the present invention, the toe plate is made of an extruded shape made of an aluminum alloy, and a bolt groove into which a bolt head is inserted is formed on the outer surface of the toe plate along the extrusion direction. It is characterized by being.

このような構成によれば、手摺支柱の位置に応じて、爪先板の固定位置を設定できるので、施工性が向上する。また、ボルト用溝は、爪先板の押出時に一体成型できるので、容易に形成できる。 According to such a configuration, since the fixing position of the toe plate can be set according to the position of the handrail support column, the workability is improved. Moreover, since the bolt groove can be integrally formed when the toe plate is extruded, it can be easily formed.

請求項５に係る発明は、前記爪先板が、前記ボルト用溝が形成された基部と、基部の上方に立ち上がる立上り壁部とを備えてなり、前記基部は、前記爪先板の内側に突出しており、前記床材の端部は、前記基部と前記主梁とで挟まれていることを特徴とする。 According to a fifth aspect of the present invention, the toe plate includes a base portion in which the bolt groove is formed and a rising wall portion that rises above the base portion, and the base portion projects inward of the toe plate. And the edge part of the said flooring material is pinched | interposed by the said base and the said main beam, It is characterized by the above-mentioned.

このような構成によれば、床材が爪先板の設置の位置決めガイドとなるので、爪先板の設置が容易となり施工性が向上する。
請求項６に係る発明は、前記爪先板は、前記基部の下方に垂れ下がる蓋板部をさらに備えており、前記蓋板部は、前記床材の端部を覆っていることを特徴とする。 According to such a configuration, since the floor material serves as a positioning guide for the installation of the toe plate, the installation of the toe plate is facilitated and the workability is improved.
The invention according to claim 6 is characterized in that the toe plate further includes a lid plate portion hanging below the base portion, and the lid plate portion covers an end portion of the flooring.

本発明に係る連結構造によれば、軽量且つ耐食性に優れたアルミニウム合金製の押出形材を用いて、施工性に優れた橋梁用点検通路を提供することができる。 According to the connection structure according to the present invention, it is possible to provide an inspection passage for a bridge excellent in workability by using an aluminum alloy extruded shape that is lightweight and excellent in corrosion resistance.

本発明の実施形態に係る橋梁用点検通路を示した一部破断斜視図である。It is a partially broken perspective view showing a bridge inspection passage according to an embodiment of the present invention. 主梁の正面図である。It is a front view of a main beam. 橋梁用点検通路を示した通路幅方向の断面図である。It is sectional drawing of the channel width direction which showed the inspection channel | path for bridges. 橋梁用点検通路を示した通路長手方向の断面図である。橋梁用点検通路の床材端部周辺を示した要部拡大斜視図である。It is sectional drawing of the channel | path longitudinal direction which showed the inspection channel | path for bridges. It is the principal part expansion perspective view which showed the floor-material edge part periphery of the inspection path for bridges. 床材を示した図であって、（ａ）は通路長手方向の断面図、（ｂ）は通路長手方向の端部拡大断面図、（ｃ）は隣接する床材との接合状態を示した通路長手方向の拡大断面図である。It is the figure which showed the flooring, Comprising: (a) is sectional drawing of a channel | path longitudinal direction, (b) is the edge part expanded sectional view of a channel | pass longitudinal direction, (c) showed the joining state with the adjacent flooring material. It is an expanded sectional view of a passage longitudinal direction. 主梁と手摺支柱と爪先板との取合いを示した通路幅方向の断面図である。It is sectional drawing of the passage width direction which showed the connection with a main beam, a handrail support | pillar, and a toe board. 主梁と床材との取合いを示した通路幅方向の断面図である。It is sectional drawing of the passage width direction which showed the connection with a main beam and a flooring. 主梁と床材との取合いを示した通路長手方向の断面図である。It is sectional drawing of the channel | route longitudinal direction which showed the connection with a main beam and a flooring.

本発明を実施するための形態について、添付図面を参照しながら詳細に説明する。
図１に示すように、本実施形態に係る橋梁用点検通路１は、一対の主梁１０，１０と、複数の副梁３０（図１では一つのみ図示）と、複数の床材５０，５０…とを備えている。主梁１０と副梁３０と床材５０は、それぞれアルミニウム合金製の押出形材にて構成されている。橋梁用点検通路１は、爪先板７０と手摺９０とを、さらに備えている。手摺９０は、横材９１と手摺支柱９２とから構成されている。 EMBODIMENT OF THE INVENTION The form for implementing this invention is demonstrated in detail, referring an accompanying drawing.
As shown in FIG. 1, a bridge inspection passage 1 according to the present embodiment includes a pair of main beams 10, 10, a plurality of sub-beams 30 (only one is shown in FIG. 1), a plurality of floor materials 50, 50 ... and so on. The main beam 10, the sub beam 30, and the flooring 50 are each made of an extruded shape made of an aluminum alloy. The bridge inspection passage 1 further includes a toe plate 70 and a handrail 90. The handrail 90 includes a cross member 91 and a handrail support 92.

一対の主梁１０は、同じ高さ位置で互いに平行に配置されている。主梁１０は、中空の押出形材にて構成されており、図２に示すように、上板部１１、下板部１２、一対の側板部１３，１３および四隅に設けられた溝構成部１４，１４・・を備えている。溝構成部１４は、主梁１０の断面方向四隅にそれぞれ配置されている。上部に形成された溝構成部１４，１４が上板部１１によって接続され、下部に形成された溝構成部１４，１４が下板部１２によって接続され、上下に並ぶ溝構成部１４，１４が側板部１３によって接続されている。上板部１１と下板部１２とは、互いに平行になっている。側板部１３，１３は、互いに平行になっている。上板部１１および下板部１２と、側板部１３，１３とは互いに直交する方向に配置され、溝構成部１４，１４・・を介して一体化されている。橋梁用点検通路１が橋梁に沿って設けられる場合は、主梁１０は、橋梁の主桁方行と同一の方向に延在するように配置される。なお、主梁１０の延在方向は前記方向に限定されるものではなく、例えば、並列する橋梁間に橋梁用点検通路１を架け渡す場合には、主梁１０の延在方向と、橋梁の主桁方行とは交差する。 The pair of main beams 10 are arranged in parallel to each other at the same height position. The main beam 10 is composed of a hollow extruded shape, and as shown in FIG. 2, an upper plate portion 11, a lower plate portion 12, a pair of side plate portions 13 and 13, and groove constituent portions provided at four corners. 14, 14... The groove constituting portions 14 are respectively disposed at the four cross-sectional direction corners of the main beam 10. The groove constituent parts 14 and 14 formed in the upper part are connected by the upper plate part 11, the groove constituent parts 14 and 14 formed in the lower part are connected by the lower plate part 12, and the groove constituent parts 14 and 14 arranged vertically are Connected by the side plate 13. The upper plate portion 11 and the lower plate portion 12 are parallel to each other. The side plate portions 13 and 13 are parallel to each other. The upper plate portion 11 and the lower plate portion 12 and the side plate portions 13 and 13 are arranged in directions orthogonal to each other, and are integrated via the groove constituting portions 14, 14. When the bridge inspection passage 1 is provided along the bridge, the main beam 10 is arranged so as to extend in the same direction as the main girder direction of the bridge. The extending direction of the main beam 10 is not limited to the above-mentioned direction. For example, when the bridge inspection path 1 is bridged between the parallel bridges, the extending direction of the main beam 10 and the bridge It intersects the main girder direction.

図１および図２に示すように、溝構成部１４には、ボルト用溝１５が形成されている。ボルト用溝１５は、副梁３０および手摺支柱９２の少なくとも一方を固定するためのボルトＢ１の頭部が挿入される。ボルト用溝１５は、主梁１０の押出方向に沿って形成されており、外側に向かって開口している。ボルト用溝１５は、両側の側板部１３の上方と下方の溝構成部１４それぞれに形成されている。主梁１０の側面のうち、通路の内側に位置する側面（隣り合う主梁１０に対向する側面）には副梁３０が固定され、通路の外側に位置する側面には手摺支柱９２が固定される。 As shown in FIGS. 1 and 2, a groove 15 for bolts is formed in the groove constituting portion 14. The bolt groove 15 is inserted with the head of the bolt B 1 for fixing at least one of the auxiliary beam 30 and the handrail column 92. The bolt groove 15 is formed along the extrusion direction of the main beam 10 and opens outward. The bolt groove 15 is formed in each of the upper and lower groove constituent portions 14 of the side plate portions 13 on both sides. Of the side surfaces of the main beam 10, the sub beam 30 is fixed to the side surface located on the inner side of the passage (the side surface facing the adjacent main beam 10), and the handrail column 92 is fixed to the side surface positioned outside the passage. The

ボルト用溝１５は、矩形断面形状を呈している。ボルト用溝１５の内法寸法は、ボルト頭部の二面幅の寸法より大きく、対角距離より小さくなっている。これによって、ボルトＢ１は、ボルト用溝１５内を長手方向に移動可能でありながらも、回転が阻止された状態となる。ボルト用溝１５の深さ寸法は、ボルト頭部の厚さ寸法より長くなっている。ボルト用溝１５の開口端には、上下両側の溝側壁のそれぞれから内側に延出する一対の係止部１６，１６（図２のみ符号を記載）が形成されている。 The bolt groove 15 has a rectangular cross-sectional shape. The internal dimension of the bolt groove 15 is larger than the dimension of the width across flats of the bolt head and smaller than the diagonal distance. As a result, the bolt B1 can move in the longitudinal direction in the bolt groove 15, but is prevented from rotating. The depth dimension of the bolt groove 15 is longer than the thickness dimension of the bolt head. At the opening end of the bolt groove 15, a pair of locking portions 16, 16 (indicated by reference numerals only in FIG. 2) extending inwardly from the upper and lower groove sidewalls are formed.

係止部１６は、ボルト用溝１５の底面と平行になっており、ボルト用溝１５の延在方向に沿って形成されている。図６に示すように、係止部１６は、ボルト頭部の座面を係止して、ボルト頭部の抜け出しを阻止する。係止部１６，１６間の隙間寸法は、ボルトＢ１の軸部が挿通可能な幅寸法となっている。 The locking portion 16 is parallel to the bottom surface of the bolt groove 15 and is formed along the extending direction of the bolt groove 15. As shown in FIG. 6, the locking portion 16 locks the seating surface of the bolt head to prevent the bolt head from coming out. The gap dimension between the locking parts 16 is a width dimension through which the shaft part of the bolt B1 can be inserted.

図１および図３に示すように、副梁３０は、主梁１０，１０同士を連結する部材であって、主梁１０の延在方向に所定間隔をあけて複数配置されている。副梁３０は、断面Ｌ字状を呈したアルミニウム合金製の押出形材にて構成されている。副梁３０は、垂直板部３０ａと水平板部３０ｂとを備えてなる。垂直板部３０ａと水平板部３０ｂは互いに直交している。副梁３０は、その延在方向（押出方向）が主梁１０の側板部１３に直交する方向（主梁１０，１０間に架け渡される水平方向）となるように配置されている。 As shown in FIG. 1 and FIG. 3, the sub-beams 30 are members that connect the main beams 10, 10, and a plurality of sub-beams 30 are arranged at predetermined intervals in the extending direction of the main beam 10. The secondary beam 30 is made of an extruded shape made of an aluminum alloy having an L-shaped cross section. The sub beam 30 includes a vertical plate portion 30a and a horizontal plate portion 30b. The vertical plate portion 30a and the horizontal plate portion 30b are orthogonal to each other. The secondary beam 30 is arranged so that its extending direction (extrusion direction) is a direction orthogonal to the side plate portion 13 of the main beam 10 (horizontal direction spanned between the main beams 10, 10).

図６にも示すように、副梁３０は、断面Ｌ字状の接続ブラケット３１を介して主梁１０に接続されている。
接続ブラケット３１は、第一板部３１ａと第二板部３１ｂとを備えてなる。第一板部３１ａと第二板部３１ｂは互いに直交している。接続ブラケット３１は、その延在方向がボルト用溝１５に直交する方向（垂直方向）となるように配置されている。第一板部３１ａは、主梁１０の内側の側板部１３に当接しており、上下２つのボルトＢ１およびナットＮ１にて側板部１３に固定されている。ボルトＢ１の頭部は、上下二列のボルト用溝１５内にそれぞれ挿入されており、ボルトＢ１の軸部の先端部側が側板部１３から突出している。ボルトＢ１の軸部の先端部は、第一板部３１ａの貫通孔を挿通して突出している。第一板部３１ａから突出した軸部の先端部にナットＮ１が螺合されて締め付けられており、これによって、接続ブラケット３１が主梁１０に固定されている。接続ブラケット３１の第二板部３１ｂと、副梁３０の垂直板部３０ａとは当接しており、上下２つのボルトＢ２およびナットＮ２にて互いに固定されている。ボルトＢ２およびナットＮ２は、主梁１０に装着されるボルトＢ１およびナットＮ１よりも小さいサイズのものが用いられているが、このサイズに限定する趣旨ではない。 As shown in FIG. 6, the secondary beam 30 is connected to the main beam 10 via a connection bracket 31 having an L-shaped cross section.
The connection bracket 31 includes a first plate portion 31a and a second plate portion 31b. The first plate portion 31a and the second plate portion 31b are orthogonal to each other. The connection bracket 31 is arranged so that the extending direction thereof is a direction (vertical direction) perpendicular to the bolt groove 15. The first plate portion 31a is in contact with the side plate portion 13 on the inner side of the main beam 10, and is fixed to the side plate portion 13 with upper and lower two bolts B1 and nuts N1. The heads of the bolts B1 are respectively inserted into the upper and lower two rows of bolt grooves 15, and the tip end side of the shaft part of the bolt B1 projects from the side plate part 13. The tip of the shaft portion of the bolt B1 protrudes through the through hole of the first plate portion 31a. A nut N1 is screwed and tightened to the tip of the shaft protruding from the first plate portion 31a, whereby the connection bracket 31 is fixed to the main beam 10. The second plate portion 31b of the connection bracket 31 and the vertical plate portion 30a of the auxiliary beam 30 are in contact with each other and are fixed to each other by two upper and lower bolts B2 and a nut N2. The bolts B2 and nuts N2 are smaller in size than the bolts B1 and nuts N1 attached to the main beam 10, but the size is not limited to this.

図４に示すように、副梁３０は、主梁１０の延在方向に沿って所定ピッチで複数配置されている。副梁３０は、手摺支柱９２と同等のピッチ（例えば１９００ｍｍピッチ）にて配置されている。なお、副梁３０の配置ピッチは一例であって、前記ピッチに限定されるものではない。副梁３０は、ボルト用溝１５に挿入されたボルトＢ１を介して主梁１０に接続されているので、主梁１０の長手方向における副梁３０の配置位置は、主梁１０および副梁３０の強度を確保できる範囲であれば、任意の位置に設定可能である。したがって、副梁３０が他の部材に干渉するのを防止することができる。 As shown in FIG. 4, a plurality of sub beams 30 are arranged at a predetermined pitch along the extending direction of the main beam 10. The sub beams 30 are arranged at a pitch (for example, 1900 mm pitch) equivalent to the handrail support column 92. In addition, the arrangement pitch of the sub beams 30 is an example, and is not limited to the pitch. Since the secondary beam 30 is connected to the main beam 10 via the bolt B1 inserted into the bolt groove 15, the arrangement position of the secondary beam 30 in the longitudinal direction of the main beam 10 is the main beam 10 and the secondary beam 30. As long as the strength can be secured, it can be set at an arbitrary position. Therefore, it is possible to prevent the secondary beam 30 from interfering with other members.

なお、副梁３０および接続ブラケット３１は、鋼製のアングル材で構成してもよいが、軽量化の観点から、アルミニウム合金製の押出形材とするのが好ましい。 The sub-beams 30 and the connection brackets 31 may be made of steel angle members, but are preferably made of aluminum alloy extruded shapes from the viewpoint of weight reduction.

図１に示すように、主梁１０の外側の側面には、手摺９０の手摺支柱９２が固定されており、手摺支柱９２には、横材９１が横架されている。
手摺支柱９２は、２つの押出形材９２ａ，９２ａを組み合わせて構成されている。押出形材９２ａは、アルミニウム合金製で、断面Ｌ字状を呈している。手摺支柱９２は、押出形材９２ａ，９２ａのＬ字の片面同士を当接させて、断面Ｔ字状に形成されている。手摺支柱９２の背面部は、主梁１０の外側の側板部１３に当接しており、ボルトＢ１およびナットＮ１にて側面に固定されている。ボルトＢ１の頭部は、上下二列のボルト用溝１５内にそれぞれ挿入されており、ボルトＢ１の軸部の先端部側が側板部１３から突出している。ボルトＢ１の軸部の先端部は、手摺支柱９２の背面部の貫通孔を挿通して突出している。背面部から突出した軸部の先端部にナットＮ１が螺合されて締め付けられており、これによって、手摺支柱９２が主梁１０に固定されている。 As shown in FIG. 1, a handrail column 92 of a handrail 90 is fixed to the outer side surface of the main beam 10, and a cross member 91 is horizontally mounted on the handrail column 92.
The handrail support 92 is configured by combining two extruded shapes 92a and 92a. The extruded shape member 92a is made of an aluminum alloy and has an L-shaped cross section. The handrail support column 92 is formed in a T-shaped cross section by bringing the L-shaped one surfaces of the extruded shape members 92a and 92a into contact with each other. The back surface portion of the handrail post 92 is in contact with the side plate portion 13 outside the main beam 10 and is fixed to the side surface with bolts B1 and nuts N1. The heads of the bolts B1 are respectively inserted into the upper and lower two rows of bolt grooves 15, and the tip end side of the shaft part of the bolt B1 projects from the side plate part 13. The tip end portion of the shaft portion of the bolt B 1 protrudes through the through hole in the back surface portion of the handrail column 92. A nut N1 is screwed and tightened to the tip of the shaft protruding from the back surface, and thereby the handrail support 92 is fixed to the main beam 10.

図１および図３に示すように、横材９１は、主梁１０の延在方向（押出方向）に沿って設けられている。横材９１は、アルミニウム合金製の押出形材からなる。横材９１は、上下に所定間隔をあけて複数本（本実施形態では３本）配置されている。横材９１は、側面に形成された係止溝９３にボルトＢ２の頭部が挿入されている。係止溝９３の開口部の両端には、内側に突出する一対の突条が形成されており、ボルトＢ２の頭部が突条に形成されている。係止溝９３から突出したボルトＢ２の軸部を、手摺支柱９２のＴ字の背面部に形成された貫通孔に挿通させ、背面部から突出したボルトＢ２の軸部の先端部にナットＮ２を螺合して締め付けている。これによって、横材９１が手摺支柱９２に固定されている。 As shown in FIGS. 1 and 3, the cross member 91 is provided along the extending direction (extrusion direction) of the main beam 10. The cross member 91 is made of an extruded shape made of an aluminum alloy. A plurality of cross members 91 (three in the present embodiment) are arranged at predetermined intervals in the vertical direction. In the cross member 91, the head of the bolt B 2 is inserted into a locking groove 93 formed on the side surface. A pair of protrusions protruding inward are formed at both ends of the opening of the locking groove 93, and the head of the bolt B2 is formed on the protrusion. The shaft portion of the bolt B2 protruding from the locking groove 93 is inserted into a through hole formed in the T-shaped back surface portion of the handrail support column 92, and a nut N2 is attached to the tip portion of the shaft portion of the bolt B2 protruding from the back surface portion. It is screwed and tightened. Thereby, the cross member 91 is fixed to the handrail support 92.

図１および図３に示すように、床材５０は、一対の主梁１０，１０間に架け渡される部材であって、主梁１０の延在方向に複数連設されている。床材５０は、アルミニウム合金製の押出形材にて構成されている。図５の（ａ）に示すように、床材５０の下部には、補強リブ５１が形成されている。補強リブ５１は、床材５０の押出方向に延在している。床材５０は、押出方向が主梁１０に直交するように配置されているので、補強リブ５１が主梁１０の延在方向に直交する方向に延在する。床材５０の床面部５２の表面には、ローレット加工が施され浅い溝５２ａが形成されており、滑り難くなっている。 As shown in FIGS. 1 and 3, the flooring 50 is a member spanned between a pair of main beams 10 and 10, and a plurality of flooring members 50 are continuously provided in the extending direction of the main beam 10. The flooring 50 is made of an extruded shape made of aluminum alloy. As shown in FIG. 5A, reinforcing ribs 51 are formed in the lower part of the flooring 50. The reinforcing ribs 51 extend in the direction in which the flooring 50 is extruded. Since the floor material 50 is disposed so that the extrusion direction is orthogonal to the main beam 10, the reinforcing rib 51 extends in a direction orthogonal to the extending direction of the main beam 10. The surface of the floor surface portion 52 of the floor material 50 is knurled to form a shallow groove 52a, which makes it difficult to slip.

補強リブ５１は、床面部５２の下面から下方に突出している。補強リブ５１は、合計四列形成されている。なお、以下では、床材５０の幅方向両端部に位置する補強リブ５１を「端部補強リブ５４」と称し、その内側の二列の補強リブ５１を、「内側補強リブ５３」と称して、区別する場合がある。
内側補強リブ５３は、床面部５２の下面から下方に垂下する垂直板部５３ａと、垂直板部５３ａの下端から連接方向両側に水平に広がる水平板部５３ｂとを備えている。内側補強リブ５３は、断面逆Ｔ字状を呈している。 The reinforcing rib 51 protrudes downward from the lower surface of the floor surface portion 52. The reinforcing ribs 51 are formed in a total of four rows. In the following, the reinforcing ribs 51 positioned at both ends in the width direction of the flooring 50 are referred to as “end reinforcing ribs 54”, and the two rows of reinforcing ribs 51 inside thereof are referred to as “inner reinforcing ribs 53”. , May be distinguished.
The inner reinforcing rib 53 includes a vertical plate portion 53a that hangs downward from the lower surface of the floor surface portion 52, and a horizontal plate portion 53b that extends horizontally on both sides in the connecting direction from the lower end of the vertical plate portion 53a. The inner reinforcing rib 53 has an inverted T-shaped cross section.

図５の（ｂ）に示すように、床材５０の接合側端部となる端部補強リブ５４は、床材５０の連接方向外側に向かって開口する係合溝５５を備えている。係合溝５５の開口部には、上部垂直片５６と下部垂直片５７とが設けられており、狭隘開口状に形成されている。
上部垂直片５６および下部垂直片５７の内側面（係合溝５５の内方側面）には、垂直方向に複数（例えば二つ）連続する表面円弧状の凸曲面５８を有する凹凸曲面（係合受け部）５９がそれぞれ形成されている。上部垂直片５６および下部垂直片５７の外側面（凹凸曲面５９の裏面）には、上下端部よりも内方側に凹んだ段部６０がそれぞれ形成されている。
段部６０が形成された位置での上部垂直片５６および下部垂直片５７の厚さは、弾性変形が可能な程度の厚さになっている。段部６０を設けることにより、床材５０，５０を隣接させたときに、隣り合う上部垂直片５６，５６同士の間、および隣り合う下部垂直片５７，５７同士の間に、隙間が形成される。この隙間は、上部垂直片５６または下部垂直片５７が弾性変形可能なスペースとすることができる。 As shown in FIG. 5B, the end reinforcing ribs 54 that become the joining side end of the flooring 50 are provided with engaging grooves 55 that open toward the outside in the connecting direction of the flooring 50. An upper vertical piece 56 and a lower vertical piece 57 are provided in the opening of the engagement groove 55 and are formed in a narrow opening shape.
A concave / convex curved surface (engagement surface) having a plurality of (for example, two) continuous surface arc-shaped convex curved surfaces 58 on the inner side surfaces (inner side surfaces of the engaging grooves 55) of the upper vertical piece 56 and the lower vertical piece 57. Receiving portions) 59 are respectively formed. On the outer surfaces of the upper vertical piece 56 and the lower vertical piece 57 (the back surface of the uneven curved surface 59), step portions 60 that are recessed inward from the upper and lower end portions are formed.
The thickness of the upper vertical piece 56 and the lower vertical piece 57 at the position where the step portion 60 is formed is such that elastic deformation is possible. By providing the step portion 60, when the flooring 50, 50 is made adjacent, a gap is formed between the adjacent upper vertical pieces 56, 56 and between the adjacent lower vertical pieces 57, 57. The This gap can be a space in which the upper vertical piece 56 or the lower vertical piece 57 can be elastically deformed.

図５の（ｃ）に示すように、隣接する床材５０，５０は継手材６３によって連結されている。継手材６３は、アルミニウム合金製の押出形材にて構成されている。継手材６３は、隣接する床材５０，５０の係合溝５５，５５の開口部内に挿入可能な基部６４と、基部６４の上端および下端の両側にそれぞれ垂直方向に突設される四つの係合片６５，６５・・とを備えている。
基部６４は、断面矩形を呈している。係合片６５の内方側面（凹凸曲面５９に対向する位置）には、垂直方向に複数（凸曲面５８と同じ二つ）連続する表面円弧状の凹曲面６６を有する凹凸係合面６７が形成されている。係合片６５の厚さは、継手材６３を係合溝５５，５５に挿入する際に弾性変形が可能な程度の厚さになっている。 As shown in (c) of FIG. 5, adjacent floor materials 50, 50 are connected by a joint material 63. The joint material 63 is made of an extruded shape made of an aluminum alloy. The joint material 63 includes a base portion 64 that can be inserted into the openings of the engaging grooves 55 and 55 of the adjacent floor materials 50 and 50, and four members that protrude vertically on both sides of the upper end and the lower end of the base portion 64. It has a pair of pieces 65, 65,.
The base 64 has a rectangular cross section. On the inner side surface of the engagement piece 65 (position facing the concave / convex curved surface 59), there is a concave / convex engagement surface 67 having a concave surface 66 having a surface arc shape continuous in the vertical direction (the same two as the convex curved surface 58). Is formed. The thickness of the engagement piece 65 is such that it can be elastically deformed when the joint material 63 is inserted into the engagement grooves 55, 55.

床材５０，５０同士を接合するには、まず、床材５０，５０を隣接させ、それぞれの上部垂直片５６，５６同士、および下部垂直片５７，５７同士を当接させて、係合溝５５，５５同士を対面させる。次に、床材５０の延在方向の一端から、係合溝５５，５５内に継手材６３を挿入する。継手材６３の基部６４は、互いに対面した係合溝５５，５５の開口部内に挿入し、継手材６３の凹凸係合面６７は、床材５０の凹凸曲面５９に摺接させながら係合溝５５内に挿入する。このとき、上部垂直片５６、下部垂直片５７および係合片６５は弾性変形可能に構成されているので、継手材６３の挿入が容易に行える。そして、上側の係合片６５，６５が隣り合う上部垂直片５６，５６を挟み込むとともに、下側の係合片６５，６５が隣り合う下部垂直片５７，５７を挟み込むので、凹凸曲面５９と凹凸係合面６７が接触した状態で、床材５０，５０同士が連結される。ここで、接触とは、面接触と線接触の両方を含む。面接触とは、凹凸曲面と凹凸係合面の少なくとも一部が面同士で接触することをいい、線接触とは、凹凸曲面と凹凸係合面の少なくとも一部が線状に接触することをいう。なお、係合受け部と係合片６５の互いに接触する面の形状は曲面状に限定されるものではなく、互いに噛み合う形状であれば屈曲平面形状であってもよい。
このような構成によれば、係合溝５５と係合片６５が長手方向に接触して係合するので、床材同士を長手方向全長に渡って連結させることができ、床材同士を確実に接合できる。また、床材５０の凹凸曲面５９と継手材６３の凹凸係合面６７とを接触させているので、係合溝５５と係合片６５との接触が確実に為され、床材５０，５０同士をガタツキなく接合できる。さらに、床材５０の厚さ方向に負荷がかかって接合部に変形が生じる場合であっても、凹凸曲面５９と凹凸係合面６３の少なくとも一部が接触して係合することができる。また、継手材６３を、床材５０の延在方向の一端から係合溝５５，５５内に挿入するという簡単な作業で、床材５０，５０同士を接合できる。また、継手部材が補強リブの係合溝内に収容されるので、床材の接合強度の向上と外観の向上が両立できる。 In order to join the floor materials 50, 50, first, the floor materials 50, 50 are adjacent to each other, the upper vertical pieces 56, 56 and the lower vertical pieces 57, 57 are brought into contact with each other, and the engagement grooves are formed. 55, 55 face each other. Next, the joint material 63 is inserted into the engagement grooves 55 and 55 from one end in the extending direction of the floor material 50. The base 64 of the joint material 63 is inserted into the openings of the engagement grooves 55, 55 facing each other, and the concave / convex engagement surface 67 of the joint material 63 is in sliding contact with the concave / convex curved surface 59 of the flooring 50. Insert into 55. At this time, since the upper vertical piece 56, the lower vertical piece 57, and the engagement piece 65 are configured to be elastically deformable, the joint member 63 can be easily inserted. Since the upper engaging pieces 65, 65 sandwich the adjacent upper vertical pieces 56, 56 and the lower engaging pieces 65, 65 sandwich the adjacent lower vertical pieces 57, 57, the uneven curved surface 59 and the uneven The floor materials 50 and 50 are connected to each other with the engagement surface 67 in contact. Here, the contact includes both surface contact and line contact. Surface contact means that at least a part of the concave and convex curved surface and the concave and convex engaging surface are in contact with each other, and line contact means that at least a part of the concave and convex curved surface and the concave and convex engaging surface are in linear contact. Say. In addition, the shape of the surfaces of the engagement receiving portion and the engagement piece 65 that are in contact with each other is not limited to a curved surface shape, and may be a bent flat shape as long as the shapes mesh with each other.
According to such a configuration, the engagement groove 55 and the engagement piece 65 are engaged in contact with each other in the longitudinal direction, so that the floor materials can be connected over the entire length in the longitudinal direction, and the floor materials can be securely connected to each other. Can be joined. Further, since the concave / convex curved surface 59 of the flooring 50 and the concave / convex engaging surface 67 of the joint member 63 are brought into contact with each other, the contact between the engaging groove 55 and the engaging piece 65 is ensured, and the flooring 50, 50. They can be joined together without rattling. Furthermore, even when a load is applied in the thickness direction of the flooring 50 and the joint is deformed, at least a part of the concave / convex curved surface 59 and the concave / convex engaging surface 63 can be brought into contact with each other. In addition, the floor materials 50 and 50 can be joined to each other by a simple operation of inserting the joint material 63 into the engagement grooves 55 and 55 from one end in the extending direction of the floor material 50. In addition, since the joint member is accommodated in the engagement groove of the reinforcing rib, it is possible to improve both the bonding strength of the flooring and the appearance.

図７および図８に示すように、互いに接合されて一体化された床材５０，５０・・は、床材用の接続ブラケット６８を介して主梁１０に接続されている。
接続ブラケット６８は、断面Ｌ字状を呈しており、第一板部６８ａと第二板部６８ｂとを備えてなる。第一板部６８ａと第二板部６８ｂは互いに直交している。第一板部６８ａは、主梁１０の内側の側板部１３に当接しており、上下２つのボルトＢ１およびナットＮ１にて側板部１３に固定されている。ボルトＢ１の頭部は、上下二列のボルト用溝１５内にそれぞれ挿入されており、ボルトＢ１の軸部の先端部側が側板部１３から突出している。ボルトＢ１の軸部の先端部は、第一板部６８ａの貫通孔を挿通して突出している。第一板部６８ａから突出した軸部の先端部にナットＮ１が螺合されて締め付けられており、これによって、接続ブラケット６８が主梁１０に固定されている。 As shown in FIGS. 7 and 8, the floor materials 50, 50,... Joined together and connected to the main beam 10 via a floor connection bracket 68. As shown in FIG.
The connection bracket 68 has an L-shaped cross section, and includes a first plate portion 68a and a second plate portion 68b. The first plate portion 68a and the second plate portion 68b are orthogonal to each other. The first plate portion 68a is in contact with the side plate portion 13 inside the main beam 10, and is fixed to the side plate portion 13 with upper and lower two bolts B1 and nuts N1. The heads of the bolts B1 are respectively inserted into the upper and lower two rows of bolt grooves 15, and the tip end side of the shaft part of the bolt B1 projects from the side plate part 13. The tip of the shaft portion of the bolt B1 protrudes through the through hole of the first plate portion 68a. A nut N1 is screwed and tightened to the tip of the shaft portion protruding from the first plate portion 68a, whereby the connection bracket 68 is fixed to the main beam 10.

接続ブラケット６８の上端部は、主梁１０の上面よりも上方に延出しており、上方に延出した第二板部６８ｂの上端部は、床材５０の端部補強リブ５４に当接している。第二板部６８ｂの上端部は、端部補強リブ５４の内側面（垂直板部５３ａの内側補強リブ５３に対向する面）に当接している。第二板部６８ｂと、床材５０の端部補強リブ５４とは、ボルトＢ３およびナットＮ３にて互いに固定されている。ボルトＢ３およびナットＮ３は、床材５０内に収容できるように、前記ボルトＢ２およびナットＮ２よりもさらに小さいサイズのものが用いられているが、このサイズに限定する趣旨ではない。 The upper end portion of the connection bracket 68 extends above the upper surface of the main beam 10, and the upper end portion of the second plate portion 68 b extending upward is in contact with the end reinforcing rib 54 of the floor material 50. Yes. The upper end portion of the second plate portion 68b is in contact with the inner side surface of the end portion reinforcing rib 54 (the surface facing the inner reinforcing rib 53 of the vertical plate portion 53a). The 2nd board part 68b and the edge part reinforcement rib 54 of the flooring 50 are mutually fixed with the volt | bolt B3 and the nut N3. The bolt B3 and the nut N3 are smaller in size than the bolt B2 and the nut N2 so that they can be accommodated in the flooring 50, but the size is not limited to this.

図８に示すように、床材５０、は、隣接する床材５０，５０同士が継手材６３によって接合された状態で、接続ブラケット６８に固定されている。ボルトＢ２の軸部が、継手材６３の高さ方向中間部を通過するように、端部補強リブ５４および継手材６３の各貫通孔（図示せず）が形成されている。ボルトＢ２の頭部とナットＮ２とで、接続ブラケット６８の第二板部６８ｂ、一対の端部補強リブ５４，５４を挟み込むことで、床材５０が接続ブラケット６８に固定されている。 As shown in FIG. 8, the floor material 50 is fixed to the connection bracket 68 in a state where the adjacent floor materials 50, 50 are joined together by the joint material 63. The through holes (not shown) of the end reinforcing ribs 54 and the joint material 63 are formed so that the shaft portion of the bolt B2 passes through the intermediate portion in the height direction of the joint material 63. The floor 50 is fixed to the connection bracket 68 by sandwiching the second plate portion 68b of the connection bracket 68 and the pair of end portion reinforcing ribs 54, 54 between the head of the bolt B2 and the nut N2.

図１に示すように、爪先板７０は、床材５０の床表面よりも上方に立ちあがる部材であって、床材５０の通路幅方向両端部に設けられている。爪先板７０は、通路長手方向（主梁１０の延在方向）に沿って延在している。
爪先板７０は、アルミニウム合金製の押出形材にて構成されている。爪先板７０は、手摺支柱９２に固定されている。具体的には、爪先板７０の外側面（床材５０とは反対側（手摺支柱９２側）の面）には、ボルト用溝７１が形成されている。ボルト用溝７１には、手摺支柱９２を固定するためのボルトＢ１の頭部が挿入される。ボルト用溝７１は、主梁１０の延在方向（爪先板７０の延在方向）に沿って形成されている。ボルト用溝７１の内法寸法は、ボルト頭部の二面幅の寸法より大きく、対角距離より小さくなっている。これによって、ボルトＢ２は、ボルト用溝７１内を長手方向に移動可能でありながらも、回転が阻止された状態となる。ボルト用溝７１の深さ寸法は、ボルト頭部の厚さ寸法より長くなっている。ボルト用溝７１の開口端には、上下両側の溝側壁のそれぞれから内側に延出する一対の係止部７２，７２（図７参照）が形成されている。 As shown in FIG. 1, the toe plate 70 is a member that rises above the floor surface of the flooring 50 and is provided at both ends of the flooring 50 in the passage width direction. The toe plate 70 extends along the passage longitudinal direction (extending direction of the main beam 10).
The toe plate 70 is made of an extruded shape made of an aluminum alloy. The toe plate 70 is fixed to the handrail support 92. Specifically, bolt grooves 71 are formed on the outer surface of the toe plate 70 (the surface on the side opposite to the flooring 50 (handrail post 92 side)). In the bolt groove 71, the head of the bolt B1 for fixing the handrail support 92 is inserted. The bolt groove 71 is formed along the extending direction of the main beam 10 (the extending direction of the toe plate 70). The internal dimension of the bolt groove 71 is larger than the dimension of the two-sided width of the bolt head and smaller than the diagonal distance. As a result, the bolt B 2 is prevented from rotating while being able to move in the longitudinal direction in the bolt groove 71. The depth dimension of the bolt groove 71 is longer than the thickness dimension of the bolt head. At the opening end of the bolt groove 71, a pair of locking portions 72, 72 (see FIG. 7) extending inwardly from the upper and lower groove sidewalls are formed.

係止部７２は、ボルト用溝７１の底面と平行になっており、ボルト用溝７１の延在方向に沿って形成されている。係止部７２は、ボルト頭部の座面を係止して、ボルト頭部の抜け出しを阻止する。係止部７２，７２間の隙間寸法は、ボルトＢ２の軸部が挿通可能な幅寸法となっている。 The locking portion 72 is parallel to the bottom surface of the bolt groove 71 and is formed along the extending direction of the bolt groove 71. The locking portion 72 locks the seat surface of the bolt head to prevent the bolt head from coming off. The gap dimension between the locking parts 72, 72 is a width dimension through which the shaft part of the bolt B2 can be inserted.

ボルト用溝７１には、ボルトＢ２の頭部が挿入されており、ボルトＢ２の軸部がボルト用溝７１から突出している。突出したボルトＢ２の軸部は、手摺支柱９２のＴ字の背面部に形成された貫通孔に挿通しており、背面部から突出している。背面部から突出したボルトＢ２の軸部の先端部には、ナットＮ２が螺合しており、手摺支柱９２の背面部が締め付けてられている。これによって、手摺支柱９２と爪先板７０とが固定されている。 The head of the bolt B 2 is inserted into the bolt groove 71, and the shaft portion of the bolt B 2 protrudes from the bolt groove 71. The protruding shaft portion of the bolt B 2 is inserted through a through-hole formed in the T-shaped back surface portion of the handrail column 92 and protrudes from the back surface portion. A nut N2 is screwed to the tip of the shaft portion of the bolt B2 protruding from the back surface portion, and the back surface portion of the handrail column 92 is tightened. Thereby, the handrail support 92 and the toe plate 70 are fixed.

爪先板７０は、ボルト用溝７１が形成された断面Ｃ字状の基部７３と、基部７３の上方に立ち上がる立上り壁部７４と、基部７３の下方に垂れ下がる蓋板部７５とを備えてなる。立上り壁部７４と蓋板部７５は、同一面内に形成されている。蓋板部７５の高さ寸法は、床材５０の厚さ（高さ）寸法と同等になっている。蓋板部７５によって、床材５０の端部が覆い隠される（補強リブ５１が目隠しされる）。爪先板７０の基部７３は、立上り壁部７４と蓋板部７５の面より内側に向かって突出しており、基部７３が床材５０の端部に載置されている。つまり、床材５０は、主梁１０と基部７３とで挟まれた状態となる。 The toe plate 70 includes a base portion 73 having a C-shaped cross section in which a bolt groove 71 is formed, a rising wall portion 74 that rises above the base portion 73, and a lid plate portion 75 that hangs down below the base portion 73. The rising wall portion 74 and the cover plate portion 75 are formed in the same plane. The height dimension of the cover plate portion 75 is equivalent to the thickness (height) dimension of the flooring 50. The end part of the flooring 50 is covered and covered by the cover plate part 75 (the reinforcing rib 51 is hidden). The base portion 73 of the toe plate 70 protrudes inward from the surfaces of the rising wall portion 74 and the lid plate portion 75, and the base portion 73 is placed on the end portion of the flooring 50. That is, the flooring 50 is sandwiched between the main beam 10 and the base 73.

前記構成の橋梁用点検通路１を形成するに際しては、まず、一対の主梁１０，１０を並列させて、複数の副梁３０，３０・・で連結して梯子状構造体を形成する。梯子状構造体の形成後、または形成と並行して、床材５０，５０同士を接合する。床材５０は、数枚を単位に接合して容易に移動可能な大きさの床材接合体を形成し、床材接合体を主梁上に架け渡して設置し固定する。床材接合体同士は、主梁１０に設置した状態で互いに固定する。床材５０の固定が完了した後に、爪先板７０を床材５０の端部に載置して、手摺支柱９２で押さえつつ、手摺支柱９２を主梁１０に固定するとともに、爪先板７０を手摺支柱９２に固定する。その後、手摺支柱９２に横材９１を固定して橋梁用点検通路１が完成する。 When the bridge inspection passage 1 having the above-described configuration is formed, first, a pair of main beams 10 and 10 are juxtaposed and connected by a plurality of sub-beams 30, 30. After the formation of the ladder-like structure or in parallel with the formation, the floor materials 50 and 50 are joined together. The flooring 50 is joined in units of several pieces to form a flooring joined body having a size that can be easily moved, and the flooring joined body is installed and fixed on the main beam. The flooring joined bodies are fixed to each other while being installed on the main beam 10. After the fixing of the flooring 50 is completed, the toe plate 70 is placed on the end of the flooring 50 and pressed by the handrail post 92 to fix the handrail post 92 to the main beam 10 and the toe plate 70 is handrailed. Fix to the column 92. Thereafter, the cross member 91 is fixed to the handrail support 92 to complete the bridge inspection passage 1.

前記橋梁用点検通路１は、工場等で予め組み付けて形成して、施工現場に搬送するため、運搬可能な長さに形成しておく。なお、工場等でどの部位まで固定するかは、適宜設定することが可能である。例えば、梯子状構造体に床材を固定する工程までを工場で行って、施工現場に搬送した後、橋梁に設置する前に、爪先板７０および手摺９０を固定してもよいし、施工現場において、全ての組付け作業を行ってもよい。 The bridge inspection passage 1 is formed in advance in a factory or the like, and is formed to have a transportable length in order to be transported to a construction site. In addition, it is possible to set suitably to which part it fixes in a factory etc. For example, after the process of fixing the flooring to the ladder-like structure is performed at the factory and transported to the construction site, the toe plate 70 and the handrail 90 may be fixed before being installed on the bridge. In the above, all assembling operations may be performed.

橋梁用点検通路１は、橋梁から張り出した片持ち梁（図示せず）の上に載置され、主梁１０が片持ち梁に固定される。主梁１０と片持ち梁との固定は、断面Ｌ字状の接続ブラケット（図示せず）を用いて行う。接続ブラケットの一方の平板部が主梁１０の内側の側板部１３に当接しボルトナットにて固定され、他方の平板部が片持ち梁の上面に当接しボルトナットにて固定される。主梁１０と接続ブラケットを固定するボルトは、主梁１０を水平方向に貫通する通しボルトを用いるのが強度上好ましい。 The bridge inspection passage 1 is placed on a cantilever beam (not shown) protruding from the bridge, and the main beam 10 is fixed to the cantilever beam. The main beam 10 and the cantilever are fixed using a connection bracket (not shown) having an L-shaped cross section. One flat plate portion of the connection bracket comes into contact with the inner side plate portion 13 of the main beam 10 and is fixed with a bolt and nut, and the other flat plate portion comes into contact with the upper surface of the cantilever and is fixed with a bolt and nut. As for the bolt for fixing the main beam 10 and the connection bracket, it is preferable in terms of strength to use a through bolt that penetrates the main beam 10 in the horizontal direction.

前記橋梁用点検通路１によれば、床材５０は、主梁１０に直交する方向で主梁１０の上に載置固定されており、さらに補強リブ５１を有している。これによって、副梁３０に対する強度上の負荷を低減することができる。つまり、副梁３０は、床材５０を支持する必要がなく、主梁１０，１０同士を一定の間隔を保持しながら連結できればよい。したがって、床材５０と副梁３０との取り合いや、副梁３０への荷重負荷を考慮する必要がなくなるので、副梁３０において、接合箇所の低減および形状の簡略化を図ることができ、施工性の向上が達成できる。また、床材５０は一対の主梁１０，１０間に架け渡されているので、床材５０の長さは通路幅程度で済み、移動や組付け時の取扱いが容易になる。 According to the bridge inspection passage 1, the floor material 50 is placed and fixed on the main beam 10 in a direction orthogonal to the main beam 10, and further includes the reinforcing rib 51. As a result, the strength load on the secondary beam 30 can be reduced. That is, the secondary beam 30 does not need to support the floor material 50, and it is only necessary that the main beams 10 and 10 can be connected to each other while maintaining a certain distance. Therefore, it is not necessary to consider the relationship between the flooring 50 and the secondary beam 30 and the load applied to the secondary beam 30, so that it is possible to reduce the number of joints and simplify the shape of the secondary beam 30. Improvement in performance can be achieved. Moreover, since the flooring 50 is spanned between the pair of main beams 10 and 10, the length of the flooring 50 is only about the width of the passage, and handling during movement and assembly becomes easy.

また、通路の幅方向両端部に爪先板７０を設けたことで、施工中および完成後に床材５０上から物が落下するのを防止できる。爪先板７０は、手摺支柱９２にボルトＢ２およびナットＮ２で簡単に固定することができる。爪先板７０には、ボルトＢ２の頭部が挿入されるボルト用溝７１が主梁１０の延在方向に沿って形成されているので、ボルトＢ２の設置位置を、爪先板７０の長手方向において任意に設定できる。これによって、手摺支柱９２の位置に応じて、ボルトＢ２の固定位置を設定できるので、施工性が向上する。また、ボルト用溝７１は、爪先板の押出時に一体成型できるので、容易に形成できる。 Moreover, by providing the toe plates 70 at both ends in the width direction of the passage, it is possible to prevent an object from falling from the floor 50 during construction and after completion. The toe plate 70 can be easily fixed to the handrail support 92 with bolts B2 and nuts N2. In the toe plate 70, a bolt groove 71 into which the head of the bolt B2 is inserted is formed along the extending direction of the main beam 10. Therefore, the installation position of the bolt B2 is set in the longitudinal direction of the toe plate 70. Can be set arbitrarily. As a result, the fixing position of the bolt B2 can be set according to the position of the handrail column 92, so that the workability is improved. Moreover, since the groove | channel 71 for bolts can be integrally molded at the time of extrusion of a toe board, it can be formed easily.

さらに、本実施形態では、爪先板７０の内側面には、ボルト用溝７１の設置高さより下方に段差部７３が形成されて、床材５０の端部が段差部７３に嵌着されている。つまり、床材５０の端部に爪先板７０の段差部７３が載置されることになるので、床材５０が爪先板７０の設置時の位置決めガイドとなる。したがって、爪先板７０の設置が容易となり施工性が向上するとともに、爪先板７０の設置位置精度が向上する。 Further, in the present embodiment, a stepped portion 73 is formed below the installation height of the bolt groove 71 on the inner surface of the toe plate 70, and the end of the flooring 50 is fitted to the stepped portion 73. . That is, since the stepped portion 73 of the toe plate 70 is placed on the end portion of the floor material 50, the floor material 50 serves as a positioning guide when the toe plate 70 is installed. Therefore, the installation of the toe plate 70 is facilitated and the workability is improved, and the installation position accuracy of the toe plate 70 is improved.

主梁１０の側面には、ボルトＢ１の頭部が挿入されるボルト用溝１５が主梁１０の延在方向に沿って形成されているので、ボルトＢ１の設置位置を主梁１０の延在方向において任意に設定できる。これによって、副梁３０や手摺支柱９２の設置位置を自由に設定できるので、副梁３０や手摺支柱９２が他の構造物等と干渉するのを防ぐことができ、施工性が向上する。また、ボルト用溝１５は、主梁１０の押出時に一体成型できるので、容易に形成できる。 Since the bolt groove 15 into which the head of the bolt B1 is inserted is formed on the side surface of the main beam 10 along the extending direction of the main beam 10, the installation position of the bolt B1 is extended to the main beam 10. Any direction can be set. Accordingly, the installation positions of the sub beam 30 and the handrail column 92 can be freely set, so that the sub beam 30 and the handrail column 92 can be prevented from interfering with other structures and the workability is improved. Further, since the bolt groove 15 can be integrally formed when the main beam 10 is pushed out, it can be easily formed.

また、橋梁用点検通路１を構成する各部材はアルミニウム合金製の押出形材にて構成されているので、橋梁用点検通路１全体の軽量化が達成できるとともに、各部材の寸法精度を向上させることができ、施工性がより一層向上する。 Moreover, since each member which comprises the bridge inspection channel | path 1 is comprised by the extruded shape made from aluminum alloy, weight reduction of the whole bridge inspection channel | path 1 can be achieved, and the dimensional accuracy of each member is improved. It is possible to improve the workability.

以上、本発明を実施するための形態について説明したが、本発明は前記実施形態に限定されず、本発明の趣旨を逸脱しない範囲で適宜設計変更が可能である。例えば、前記実施形態では、床材５０の床面部５２は下部が視認できない目隠し状の板材にて構成されているが、メッシュ状の板材としてもよい。このようにすればさらなる軽量化が達成できる。 As mentioned above, although the form for implementing this invention was demonstrated, this invention is not limited to the said embodiment, In the range which does not deviate from the meaning of this invention, a design change is possible suitably. For example, in the said embodiment, although the floor surface part 52 of the flooring 50 is comprised by the blindfold board | plate material which cannot visually recognize the lower part, it is good also as a mesh-like board | plate material. In this way, further weight reduction can be achieved.

また、前記実施形態では、副梁３０は断面Ｌ字状を呈しているが、この形状に限定されるものではなく、断面矩形の角パイプ状や、断面Ｔ字状の押出形材であってもよい。 Moreover, in the said embodiment, although the sub-beam 30 is exhibiting the cross-section L-shape, it is not limited to this shape, It is a square pipe shape of a cross-section rectangle, or an extrusion shape material of a cross-section T shape. Also good.

１橋梁用点検通路
１０主梁
１５ボルト用溝
３０副梁
５０床材
７０爪先板
７１ボルト用溝
７３基部
９０手摺
９２手摺支柱
Ｂ１ボルト
Ｂ２ボルト 1 Bridge Inspection Passage 10 Main Beam 15 Bolt Groove 30 Secondary Beam 50 Floor Material 70 Toe Plate 71 Bolt Groove 73 Base 90 Handrail 92 Handrail Post B1 Bolt B2 Bolt

Claims

A pair of main beams made of an extruded product made of aluminum alloy, a plurality of sub beams connecting the main beams, a plurality of floor members spanned between the pair of main beams, and fixed to the main beams A bridge inspection passage provided with a handrail post and a toe plate provided at an end portion in the passage width direction of the floor material,
Reinforcing ribs are formed in the lower part of the flooring,
The flooring is arranged such that the reinforcing rib extends in a direction perpendicular to the extrusion direction of the main beam,
On the side surface of the main beam, a bolt groove into which a head portion of a bolt that fixes at least one of the sub beam and the handrail column is inserted is formed along the extrusion direction of the main beam,
The bridge inspection passage, wherein the toe plate is fixed to the handrail post.

The floor materials are joined together through a joint material,
The reinforcing rib at the end that becomes the joining side end of the flooring material is provided with an engagement groove formed in a narrow opening shape by an upper vertical piece and a lower vertical piece that opens toward the outside in the joining direction. And
The joint material protrudes from both sides of an upper end and a lower end of the base portion that can be inserted into the opening portion of the engagement groove between the floor materials to be joined, and engages with the engagement groove. And an engaging piece
In the state where the joining side end portions of the flooring material are in contact with each other, the adjacent upper vertical pieces are sandwiched between the pair of engaging pieces on the upper side of the joint material, and the adjacent lower vertical pieces are The bridge inspection passage according to claim 1 , wherein the floor materials are connected to each other in a state of being sandwiched between a pair of the engagement pieces on the lower side of the joint material .

On the inner side surface of the upper vertical piece and the lower vertical piece, an engagement receiving portion made of an uneven curved surface is formed,
The engaging piece is formed with a concave and convex engaging surface that can slide on the concave and convex curved surface,
The bridge inspection passage according to claim 2 , wherein the engagement groove and the engagement piece are engaged with each other in a state where the uneven curved surface and the uneven engagement surface are in contact with each other.

The toe plate is made of an extruded shape made of aluminum alloy,
Wherein the outer surface of the toe board, according to any one of claims 1 to 3 volts groove the bolt head is inserted, characterized in that it is formed along the extrusion direction Inspection passage for bridges.

The toe plate includes a base portion in which the bolt groove is formed, and a rising wall portion that rises above the base portion.
The base protrudes inside the toe plate;
The bridge inspection passage according to claim 4 , wherein an end portion of the flooring material is sandwiched between the base portion and the main beam.

The toe plate further includes a lid plate portion that hangs downward from the base portion,
The lid plate portion covers an end portion of the flooring.
The bridge inspection passage according to claim 5, wherein: