JP2012102490A - Guard fence - Google Patents

Guard fence Download PDF

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JP2012102490A
JP2012102490A JP2010250366A JP2010250366A JP2012102490A JP 2012102490 A JP2012102490 A JP 2012102490A JP 2010250366 A JP2010250366 A JP 2010250366A JP 2010250366 A JP2010250366 A JP 2010250366A JP 2012102490 A JP2012102490 A JP 2012102490A
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plate portion
flange portion
base
flange
attached
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Mitsuhiro Kitano
充洋 北野
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Sekisui Jushi Corp
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Sekisui Jushi Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a guard fence having a column which absorbs a collision load caused by vehicle impact to the guard fence, and prevents a base of the guard fence column from being rolled up.SOLUTION: A rear flange 5 has a bent part 52 at the bottom end of a support plate 51 which rises upward in a state opposed to a horizontal beam mounting plate 45 of a front flange 4. A projecting plate 53 inclined downward toward the rear side projects from the bent part 52. Since the lower end of the projecting plate 52 is fixed to the top surface 31 of a base 3, the rear flange 5 is not tilted down at the lower end, that is, the lower end of the projecting plate 53. Since the rear flange 5 is tilted down toward the rear side around the bent part 52 as a fulcrum, force in the direction of rolling up of the front portion of the base 3 is reduced, resulting in suppression of rolling up of the front portion.

Description

本発明は、主に道路や橋梁の側縁の地覆部上に設けられた支柱に横ビームが取付けられた防護柵に関するものである。   The present invention relates to a protective fence in which a lateral beam is attached to a support column provided on a ground covering portion on a side edge of a road or a bridge.

従来、支柱に横ビームが取付けられて形成された防護柵の支柱として、例えば、道路に面する前面フランジと、この前面フランジの後方に配置された前記前面フランジより細幅の後面フランジと、前面フランジと後面フランジとを繋ぐウェブとを備え、そして前面フランジは下端が溶接によりベース部（後記の特許文献１では台座と称している。）の前端面に取付けられ、また後面フランジはその下端が前記ベース部の上面に取付けられると共に、前記ベース部には後面フランジを挟んでその前後部にそれぞれ２個一対のボルト挿通孔が設けられ、該ボルト挿通孔にアンカーボルトを挿通して、道路に固定するようになされた防護柵用支柱を備えた防護柵が開示されている（特許文献１の図２、４参照）。   Conventionally, as a protective fence post formed by attaching a lateral beam to a post, for example, a front flange facing a road, a rear flange narrower than the front flange disposed behind the front flange, The front flange includes a web connecting the flange and the rear flange, and the lower end of the front flange is attached to the front end surface of the base portion (referred to as a pedestal in Patent Document 1 described later) by welding, and the lower end of the rear flange is Attached to the upper surface of the base portion, the base portion is provided with two pairs of bolt insertion holes on the front and rear portions with a rear flange interposed therebetween, and anchor bolts are inserted into the bolt insertion holes so that the A guard fence having a guard fence post that is fixed is disclosed (see FIGS. 2 and 4 of Patent Document 1).

特開２００８−１３８４２５号公報JP 2008-138425 A

上記特許文献１に記載された防護柵用支柱は、後面フランジの幅を前面フランジより細幅として、車両等の衝突によって、この支柱の前面フランジに後方向の衝突荷重が作用した場合に、該支柱を後方側に傾倒させることにより、該衝突荷重を吸収させ、もって衝突車両が受ける衝撃や損傷を緩和するようにしたものと思われる。   The protective fence post described in the above-mentioned Patent Document 1 has a rear flange having a narrower width than the front flange, and when a rear collision load is applied to the front flange of the post due to a collision of a vehicle or the like, It seems that the collision load is absorbed by tilting the column to the rear side, thereby reducing the impact and damage to the collision vehicle.

しかしながら、上記支柱は、前面フランジの下端がベース部の前端面に取付けられているため、車両が衝突して前面フランジを後方側に傾倒させる荷重が加わった場合に、前面フランジからはベース部の前端部を捲り上げる方向の力が強く加わり、またベース部は２個一対のボルト挿通孔が後面フランジを挟んで前後部にそれぞれ形成され、このボルト挿通孔に挿通された計４個のアンカーボルトによって、道路に固定するようになされているが、車両が衝突して後面フランジを後方側に傾倒させる荷重が加わった場合に、この後面フランジを支点としてベース部の前側部分を捲り上げる方向の力が加わることから、このベース部の前側部分を捲り上げる方向の力に対しては、後面フランジと前面フランジとの間に設けられた前部のボルト挿通孔に挿通された２個のアンカーボルトが主に受けることとなり、この前部の２個のアンカーボルトに強い力が加わると思われる。   However, since the lower end of the front flange is attached to the front end surface of the base portion, the front flange has a load that tilts the front flange rearward when the vehicle collides. Strong force in the direction of raising the front end is strongly applied, and the base part has two pairs of bolt insertion holes formed on the front and rear sides of the rear flange, respectively, and a total of four anchor bolts inserted through the bolt insertion holes However, when a load is applied that causes the rear flange to tilt backwards when the vehicle collides, the force in the direction of lifting the front part of the base part with the rear flange as a fulcrum is applied. For this reason, the front bolt provided between the rear flange and the front flange is inserted against the force in the direction of raising the front portion of the base portion. Two anchor bolts inserted through the holes becomes possible to primarily receive a strong force is likely to join the two anchor bolts of this front.

したがって、上記防護柵用支柱においては、前面フランジによるベース部の前端部の捲り上げや、後面フランジを支点としてベース部の前側部分の捲り上げによる前部のアンカーボルトに加わる強い力に対して、対策を講じるための設計上の工夫が必要であると思われる。   Therefore, in the above-mentioned protective fence support, against the strong force applied to the front anchor bolt due to the front end of the base part by the front flange and the front part of the base part by using the rear flange as a fulcrum, It seems that design ingenuity is necessary to take measures.

本発明は、前記の如き問題点を解消し、防護柵に車両による衝撃が加わった際の、衝突荷重を吸収させると共に、防護柵用支柱のベース部の捲り上げについての対策が講じられた支柱を備えた防護柵を提供せんとするものである。   The present invention solves the above-mentioned problems, absorbs the collision load when the vehicle is subjected to an impact on the protective fence, and takes a measure for raising the base of the protective fence support. It is intended to provide a protective fence equipped with.

上記目的を達成するために、本発明は次のような構成としている。
すなわち、本発明に係る第一の防護柵は、道路側縁の地覆部に立設された支柱の間に横ビームが取付けられた防護柵であって、前記支柱は、支柱本体と平板状のベース部とを備え、前記支柱本体は、前後に相対する前フランジ部及び後フランジ部と、前後両フランジ部を連結する連結板部とからなる断面略Ｈ型となされ、前記前フランジ部は、その下端がベース部の上面に取付けられると共に、横ビームが取付けられる横ビーム取付板部が上方に向けて立ち上げられ、前記後フランジ部は、前記前フランジ部の横ビーム取付板部と相対向して上方に向けて立ち上がる支持板部が前フランジ部の幅より細幅で形成されると共に、下部において前記支持板部より後方側に張り出された張出板部の下端がベース部の上面に取付けられ、前記ベース部は、前後部にそれぞれ設けられたアンカーボルト挿通用孔にアンカーボルトが挿通されて地覆部に固定されると共に、前後部の前記アンカーボルト挿通用孔のいずれもが、ベース部の上面にそれぞれ取付けられた前フランジ部の下端と後フランジ部の張出板部の下端との間に設けられていることを特徴とするものである。 In order to achieve the above object, the present invention is configured as follows.
That is, the first guard fence according to the present invention is a guard fence in which a transverse beam is attached between the pillars erected on the ground covering portion of the road side edge, and the pillars are formed like a pillar body and a flat plate. The base body has a substantially H-shaped cross section including a front flange portion and a rear flange portion opposed to the front and rear, and a connecting plate portion connecting both the front and rear flange portions. The lower beam is attached to the upper surface of the base portion, and the horizontal beam mounting plate portion to which the horizontal beam is mounted is raised upward, and the rear flange portion is relative to the horizontal beam mounting plate portion of the front flange portion. The support plate portion that rises upward toward the upper side is formed to be narrower than the width of the front flange portion, and the lower end of the projecting plate portion that protrudes rearward from the support plate portion in the lower portion is the base portion The base part is mounted on the upper surface The anchor bolts are inserted into the anchor bolt insertion holes provided at the front and rear portions, respectively, and fixed to the ground cover portion, and the anchor bolt insertion holes at the front and rear portions are attached to the upper surface of the base portion, respectively. It is provided between the lower end of the formed front flange part and the lower end of the overhanging plate part of the rear flange part.

また本発明に係る第二の防護柵は、前記構成に加えて、前記前フランジ部は、ベース部の上面に下端が取付けられて前記上面から垂直に立ち上がる垂直立上部と、該垂直立上部の上端を第１の屈曲部として、この第１の屈曲部から斜め後方に向けて傾斜状に立ち上がる傾斜部と、該傾斜部の上端を第２の屈曲部として、この第２の屈曲部から上方に向けて立ち上がる横ビーム取付板部とを備え、前記後フランジ部は、前記前フランジ部の横ビーム取付板部と相対向して上方に向けて立ち上がる支持板部の下端を屈曲部として、この屈曲部から後方側に下り傾斜状で張り出された張出板部が形成され、該張出板部の下端がベース部の上面に取付けられていることを特徴とするものである。   In addition to the above configuration, the second protective fence according to the present invention includes, in addition to the above-described configuration, the front flange portion, which has a lower end attached to the upper surface of the base portion and rises vertically from the upper surface; An upper end is defined as a first bent portion, an inclined portion that rises in an inclined manner from the first bent portion obliquely rearward, and an upper end of the inclined portion is defined as a second bent portion. A horizontal beam mounting plate portion that rises toward the front flange portion, and the rear flange portion has a lower end of the support plate portion that rises upward facing the horizontal beam mounting plate portion of the front flange portion as a bent portion. A projecting plate portion projecting downward and inclined from the bent portion to the rear side is formed, and the lower end of the projecting plate portion is attached to the upper surface of the base portion.

本発明に係る第一の防護柵によれば、支柱において、前フランジ部の横ビーム取付板部と相対向して形成された後フランジ部の支持板部が、前フランジ部の幅より細幅で形成しているので、車両等の衝突によって、前面フランジに後方向の衝突荷重が作用した場合に、支柱が後方側に傾倒され、この傾倒によって、衝突荷重が吸収されて、衝突車両が受ける衝撃や損傷が緩和される。   According to the first guard fence according to the present invention, in the support column, the support plate portion of the rear flange portion formed opposite to the transverse beam mounting plate portion of the front flange portion is narrower than the width of the front flange portion. Therefore, when a rear collision load is applied to the front flange due to a collision of the vehicle or the like, the support column is tilted rearward, and this tilt absorbs the collision load and is received by the collision vehicle. Impact and damage are alleviated.

また前フランジ部の下端はベース部の前端面に取付けられておらず、ベース部の上面に取付けられているので、車両が衝突して前面フランジを後方側に傾倒させる荷重が加わった場合においても、ベース部の前端部を捲り上げる方向の力が強く加わらず、ベース部の前端部の捲り上げが抑制される。   Also, the lower end of the front flange is not attached to the front end of the base, but is attached to the upper surface of the base, so even when a load is applied that causes the vehicle to collide and tilt the front flange backward. The force in the direction of raising the front end portion of the base portion is not applied strongly, and the rise of the front end portion of the base portion is suppressed.

さらに、ベース部の前後部にそれぞれ設けられたアンカーボルト挿通用孔のいずれもが、ベース部の上面にそれぞれ取付けられた前フランジ部の下端と後フランジ部の張出板部の下端との間に設けられているので、車両が衝突して後フランジ部を後方側に傾倒させる荷重が加わった場合において、この後フランジ部を支点としてベース部の前側部分を捲り上げる方向の力が加わっても、このベース部の前側部分を捲り上げる方向の力を、前後部のアンカーボルト挿通用孔に挿通された少なくとも４個のアンカーボルトが受けることとなるので、各アンカーボルトが受ける力が分散され、前部のアンカーボルトに極端な強い力が加わると言った不都合がなくなる。   Furthermore, each of the anchor bolt insertion holes provided in the front and rear portions of the base portion is between the lower end of the front flange portion and the lower end of the overhanging plate portion of the rear flange portion respectively attached to the upper surface of the base portion. Therefore, when a load is applied that causes the rear flange to tilt backwards due to the collision of the vehicle, even if a force in the direction of lifting the front portion of the base portion is applied with the rear flange as a fulcrum, The force in the direction of lifting the front portion of the base portion is received by at least four anchor bolts inserted through the anchor bolt insertion holes in the front and rear portions, so that the force received by each anchor bolt is dispersed, The inconvenience that an extreme strong force is applied to the anchor bolt at the front part is eliminated.

次に本発明に係る第二の防護柵によれば、前フランジ部に前記構成の第１の屈曲部と第２の屈曲部とが形成されているので、車両等の衝突によって、前フランジ部に後方向の衝突荷重が作用した場合に、第１の屈曲部及び第２の屈曲部の部分が後方側に引き伸ばされて、効果的に支柱が後方側に傾倒される。   Next, according to the second guard fence according to the present invention, the first flange portion and the second bend portion having the above-described configuration are formed in the front flange portion. When a rearward collision load acts on the first and second bent portions, the first bent portion and the second bent portion are stretched rearward, and the column is effectively tilted rearward.

また後フランジ部は、前記構成の屈曲部が形成されると共に、この屈曲部から後方側に下り傾斜状で張り出された張出板部が形成されているので、後フランジ部は下端、すなわち張出板部の下端で傾倒されず、前記屈曲部を支点にして後方側に傾倒されることから、ベース部の前側部分を捲り上げる方向の力が低減され、前側部分の捲り上げが抑制される。   In addition, the rear flange portion is formed with the bent portion having the above-described configuration, and is formed with a protruding plate portion protruding in a downwardly inclined manner from the bent portion to the rear side. Since it is not tilted at the lower end of the overhanging plate portion but tilted backward with the bent portion as a fulcrum, the force in the direction of rolling up the front portion of the base portion is reduced, and the lifting of the front portion is suppressed. The

本発明に係る防護柵において実施の一形態を示す、（イ）は正面図、（ロ）は側面図である。One embodiment is shown in the protection fence which concerns on this invention, (I) is a front view, (B) is a side view. 図１に示す実施形態における支柱の、（イ）は正面図、（ロ）は側面図、（ハ）は背面図、（ニ）は平面図である。1A is a front view, FIG. 1B is a side view, FIG. 1C is a rear view, and FIG. （イ）は図２（ロ）のＡ−Ａ断面図、（ロ）は図２（ロ）のＢ−Ｂ断面図である。(A) is AA sectional drawing of FIG.2 (b), (b) is BB sectional drawing of FIG.2 (b). 図１に示す実施形態における支柱下部近傍の、（イ）は正面図、（ロ）は側面図である。In the embodiment shown in FIG. 1, (a) is a front view and (b) is a side view in the vicinity of the lower portion of the support.

次に、本発明を実施するための最良の形態について図面を参照し、具体的に説明する。
図面において、１は道路側縁の地覆部に立設された支柱、２は支柱１の間に架設された横ビームであり、本発明に係る防護柵Ｐは支柱１と横ビーム２とを備え、更に支柱１は、地覆部に固定されるベース部３と、ベース部３上面に取付けられる前後フランジ部４，５及びその間に配置される連結板部６とを備える支柱本体７とを備えている。 Next, the best mode for carrying out the present invention will be specifically described with reference to the drawings.
In the drawings, reference numeral 1 denotes a column that is erected on the ground covering portion of the road side edge, 2 is a horizontal beam that is installed between the columns 1, and the guard fence P according to the present invention includes the column 1 and the horizontal beam 2. Furthermore, the column 1 includes a column body 7 including a base portion 3 fixed to the ground cover portion, front and rear flange portions 4 and 5 attached to the upper surface of the base portion 3, and a connecting plate portion 6 disposed therebetween. I have.

支柱１は、図１に示すように、車両が車道から飛び出すのを防止するための防護柵Ｐにおいて、横ビーム２を支持するものであり、道路や橋梁の側縁に形成される地覆部に立設されている。   As shown in FIG. 1, the support column 1 supports the lateral beam 2 in the protective fence P for preventing the vehicle from jumping out from the roadway, and is a ground cover formed on the side edge of the road or bridge. Is erected.

横ビーム２は、支柱１の間に取付けられるものであり、車両が衝突した際の衝撃に必要な強度を考慮すると、強度的に安定しておりコストの安い鋼材を適宜加工したものが好適に用いられる。尚、耐食性を向上させるために、鋼材に亜鉛めっきや塗装を施してもよい。又、本実施形態では、横ビーム２の断面形状は、円形であるが方形状或いは矩形状でもよい。   The transverse beam 2 is attached between the columns 1 and, considering the strength required for impact when the vehicle collides, a suitably machined steel material that is stable in strength and inexpensive. Used. In order to improve the corrosion resistance, the steel material may be galvanized or painted. In the present embodiment, the cross-sectional shape of the transverse beam 2 is circular, but may be rectangular or rectangular.

支柱１は、支柱本体７と該支柱本体７をその上面に立設するための台座となるベース部３とを備え、前記支柱本体７は、前後に相対する前フランジ部４及び後フランジ部５と、前後両フランジ部４、５を連結する連結板部６とからなる断面略Ｈ型となされ、その下端が地覆部に固定されるベース部３上面に取付けられている。   The support column 1 includes a support column main body 7 and a base portion 3 that serves as a pedestal for standing the support column main body 7 on its upper surface. The support column main body 7 includes a front flange portion 4 and a rear flange portion 5 that face each other in the front-rear direction. The connecting plate portion 6 that connects the front and rear flange portions 4 and 5 is substantially H-shaped in cross section, and the lower end thereof is attached to the upper surface of the base portion 3 fixed to the ground covering portion.

前フランジ部４は、上下方向が長辺となり、左右方向が短辺となる下端から上端に至るほぼ等幅の正面視縦長の長方形板状体であり、上部に横ビーム取付板部４５が設けられ、その横ビーム取付板部４５に防護柵Ｐの横ビーム２が取付けできるように構成されている。   The front flange portion 4 is a rectangular plate body that is vertically long in a front view and has a substantially equal width from the lower end to the upper end where the vertical direction is the long side and the horizontal direction is the short side, and the horizontal beam mounting plate portion 45 is provided at the top. The transverse beam 2 of the protective fence P can be attached to the transverse beam attachment plate portion 45.

かかる前フランジ部４の構成を詳細に説明すると、本実施形態では、ベース部３の上面３１に下端が取付けられて該上面３１から垂直に立ち上がる垂直立上部４１と、該垂直立上部４１の上端を第１の屈曲部４２として、この第１の屈曲部４２から斜め後方に向けて傾斜状に立ち上がる傾斜部４３と、該傾斜部４３の上端を第２の屈曲部４４として、この第２の屈曲部４４から上端に向けて垂直に立ち上がる横ビーム取付板部４５とが形成され、そして前記横ビーム取付板部４５に横ビーム２が取付けられている。したがって、第１の屈曲部４２は第２の屈曲部４４より前方側に位置している。また、垂直立上部４１の下端がベース部３の上面３１の前方側に溶接等による接合手段を介して取付けられている。   The configuration of the front flange portion 4 will be described in detail. In the present embodiment, a lower end is attached to the upper surface 31 of the base portion 3 and the vertical rising portion 41 rises vertically from the upper surface 31, and an upper end of the vertical rising portion 41. As the first bent portion 42, the inclined portion 43 rising obliquely rearward from the first bent portion 42, and the upper end of the inclined portion 43 as the second bent portion 44. A horizontal beam mounting plate portion 45 that rises vertically from the bent portion 44 toward the upper end is formed, and the horizontal beam 2 is mounted on the horizontal beam mounting plate portion 45. Therefore, the first bent portion 42 is located on the front side of the second bent portion 44. Further, the lower end of the vertical upright portion 41 is attached to the front side of the upper surface 31 of the base portion 3 through a joining means such as welding.

前記横ビーム取付板部４５は、前面に横ビーム２が取付け可能な取付部４５ａが設けられている。本実施形態では、取付部４５ａは、横ビーム取付板部４５において後方側に凹んだ側面視凹円弧状に形成され、その凹円弧状の取付部４５ａに横ビーム２の背面側が当接されてボルト・ナットで固定されている。尚、取付部４５ａの他の実施形態としては、横ビーム取付板部４５に別体の取付具を取付け、これを取付部４５ａとして横ビーム２を取付ける形態を挙げることができる。さらに、前フランジ部４の上端には、最上段の横ビーム２を固定するための凹状の受け部４５ｂが形成されている。   The horizontal beam mounting plate portion 45 is provided with a mounting portion 45a to which the horizontal beam 2 can be mounted on the front surface. In the present embodiment, the attachment portion 45a is formed in a concave arc shape in side view that is recessed rearward in the horizontal beam attachment plate portion 45, and the back side of the horizontal beam 2 is in contact with the concave arcuate attachment portion 45a. It is fixed with bolts and nuts. In addition, as another embodiment of the attachment part 45a, the form which attaches a separate fixture to the horizontal beam attachment board part 45, and attaches the horizontal beam 2 as this as the attachment part 45a can be mentioned. Further, a concave receiving portion 45 b for fixing the uppermost horizontal beam 2 is formed at the upper end of the front flange portion 4.

尚、前フランジ部４の形態は本実施形態に限られるものではない。垂直立上部４１、傾斜部４３、横ビーム取付板部４５とが側面視において連続的な緩やかな曲面に接合されたものでもよく、或いは、側面視において略直線上に接合されたものでもよい。又、複数の部材を接合させてもよく、１個の板材を折り曲げ加工して形成したものを用いてもよい。   In addition, the form of the front flange part 4 is not restricted to this embodiment. The vertical upright portion 41, the inclined portion 43, and the horizontal beam mounting plate portion 45 may be joined to a continuous gentle curved surface in a side view, or may be joined on a substantially straight line in a side view. Further, a plurality of members may be joined, and one formed by bending a single plate material may be used.

次に、後フランジ部５は上下方向が長辺となり左右方向が短辺となる正面視縦長の長方形板状体であり、該後フランジ部５の横幅は、下端から上端に至る略等幅であって、かつ前記前フランジ部４の横幅よりも細幅で形成されていると共に、前記前フランジ部４の横ビーム取付板部４５と相対向して上方に向けてほぼ上端まで立ち上がる支持板部５１が形成され、その支持板部５１の下端を屈曲部５２として、該屈曲部５２から後方側に下り傾斜状で張り出された張出板部５３が延設され、該張出板部５３の下端がベース部３の上面３１に溶接等の適宜手段で取付けられている。   Next, the rear flange portion 5 is a rectangular plate-like body that is vertically long when viewed from the front and has a long side in the vertical direction and a short side in the left-right direction, and the lateral width of the rear flange portion 5 is substantially equal from the lower end to the upper end. And a support plate portion that is formed to be narrower than the lateral width of the front flange portion 4 and rises up to substantially the upper end facing the lateral beam mounting plate portion 45 of the front flange portion 4. 51 is formed, with the lower end of the support plate portion 51 as a bent portion 52, an extended plate portion 53 extending downward and inclined downward from the bent portion 52 is extended, and the extended plate portion 53 is extended. Is attached to the upper surface 31 of the base portion 3 by appropriate means such as welding.

尚、後フランジ部５の形態は本実施形態に限られるものではない。張出板部５３と支持板部５１とが側面視において連続的な緩やかな曲面に接合されたものでもよく、或いは、側面視において略直線上に接合されたものでもよい。又、複数の部材を接合させてもよく、１個の板材を折り曲げ加工して形成したものを用いてもよい。   In addition, the form of the rear flange part 5 is not restricted to this embodiment. The overhanging plate portion 53 and the support plate portion 51 may be joined to a continuous gentle curved surface in a side view, or may be joined to a substantially straight line in a side view. Further, a plurality of members may be joined, and one formed by bending a single plate material may be used.

連結板部６は、上下方向が長辺となり前後方向が短辺となる板状体であって、前フランジ部４と後フランジ部５とを連結すべく前後フランジ部４、５の間に配置されており、連結板部６の前端面部６１が前フランジ部４の背面の上下に亘って接続され、後端面部６２が後フランジ部５の前面の上下に亘って接続されている。また、連結板部６の下端面部６３は、前後端部が切欠かれ、その残余の中央部分がベース部３の上面３１に取付けられている。そして、連結板部６を挟んで、ベース部３の左右のアンカーボルト挿通用孔３４、３５が配置されている。   The connecting plate portion 6 is a plate-like body having a long side in the vertical direction and a short side in the front-rear direction, and is disposed between the front and rear flange portions 4 and 5 to connect the front flange portion 4 and the rear flange portion 5. The front end surface portion 61 of the connecting plate portion 6 is connected over the top and bottom of the back surface of the front flange portion 4, and the rear end surface portion 62 is connected over the top and bottom of the front surface of the rear flange portion 5. Further, the lower end surface portion 63 of the connecting plate portion 6 is notched at the front and rear end portions, and the remaining central portion is attached to the upper surface 31 of the base portion 3. Then, left and right anchor bolt insertion holes 34 and 35 of the base portion 3 are arranged with the connecting plate portion 6 interposed therebetween.

ベース部３は、平板状に構成されており、その上面３１及び下面３２は平面であり互いに平行となっている。そしてベース部３には、地覆部に支柱１を立設させるために、地覆部上面から上方に突設されたアンカーボルトＢが挿通可能なアンカーボルト挿通用孔３３、３４が上下方向に貫通して設けられている。   The base part 3 is configured in a flat plate shape, and its upper surface 31 and lower surface 32 are flat and parallel to each other. The base portion 3 has anchor bolt insertion holes 33 and 34 in the vertical direction through which anchor bolts B projecting upward from the upper surface of the ground covering portion can be inserted in order to make the support column 1 stand on the ground covering portion. It is provided through.

アンカーボルト挿通用孔３３、３４は、ベース部３の上面３１に取付けられた前フランジ部４の下端である垂直立上部４１の下端と後フランジ部５の下端である張出板部５３の下端との間の前部と後部とにおいて、それぞれ、支柱本体７の連結板部６を挟んで、ベース部３の左右に離間して少なくとも２個ずつ形成されている。すなわち、ベース部３の上面３１に取付けられた前フランジ部４の垂直立上部４１の下端と後フランジ部５の張出板部５３の下端との間において、垂直立上部４１の後方側に前部のアンカーボルト挿通用孔３３が左右に離間して２個形成され、張出板部５３の前方側に後部のアンカーボルト挿通用孔３４が左右に離間して２個形成されている。   The anchor bolt insertion holes 33 and 34 are provided at the lower end of the vertical upright portion 41 that is the lower end of the front flange portion 4 attached to the upper surface 31 of the base portion 3 and the lower end of the overhang plate portion 53 that is the lower end of the rear flange portion 5. The front part and the rear part between the base part 3 and the base part 3 are formed so as to be spaced apart from each other on the left and right sides with the connecting plate part 6 interposed therebetween. That is, between the lower end of the vertical upright portion 41 of the front flange portion 4 attached to the upper surface 31 of the base portion 3 and the lower end of the overhang plate portion 53 of the rear flange portion 5, Two anchor bolt insertion holes 33 are formed apart from each other on the left and right sides, and two rear anchor bolt insertion holes 34 are formed on the front side of the overhanging plate portion 53 so as to be separated from each other on the left and right.

したがって、車両が衝突して後フランジ部５を後方側に傾倒させる荷重が加わった場合において、後フランジ部５を支点としてベース部３の前側部分を捲り上げる方向の力が加わっても、この力を、この前後部のアンカーボルト挿通用孔３３、３４に挿通された少なくとも４個のアンカーボルトＢが受けることとなる。なお本実施形態では、アンカーボルト挿通用孔３３、３４は、前後方向に長軸となる長孔であるが、これに限定されず、左右方向に長軸となる長孔であってもよく、或いは、円孔であってもよい。   Therefore, when a load is applied that causes the rear flange portion 5 to tilt rearward due to the collision of the vehicle, this force is applied even if a force in the direction of lifting the front portion of the base portion 3 with the rear flange portion 5 as a fulcrum is applied. Are received by at least four anchor bolts B inserted through the anchor bolt insertion holes 33 and 34 at the front and rear portions. In the present embodiment, the anchor bolt insertion holes 33 and 34 are long holes having a long axis in the front-rear direction, but are not limited thereto, and may be a long hole having a long axis in the left-right direction. Alternatively, it may be a circular hole.

また前記アンカーボルト挿通用孔３３、３４は、前フランジ部４の垂直立上部４１の下端と後フランジ部５の張出板部５３の下端との間において、少なくとも前後に２個ずつ計４個のアンカーボルトが挿通できるようになされていればよく、それ以上の数のアンカーボルト挿通用孔を形成していてもよい。また図４（ロ）に示す如く、地覆部に設置された４個のアンカーボルトＢは、前側２個の方が後側２個よりも長くなされており、支柱１の前側から荷重を受けた際に、前側の長尺なアンカーボルトＢにより、荷重を効果的に受け止めることができる。   Further, the anchor bolt insertion holes 33 and 34 are at least two in the front-rear direction between the lower end of the vertical upright portion 41 of the front flange portion 4 and the lower end of the overhanging plate portion 53 of the rear flange portion 5, for a total of four. As long as the anchor bolts can be inserted, more anchor bolt insertion holes may be formed. Also, as shown in FIG. 4 (b), the four anchor bolts B installed on the ground cover portion are longer on the front two than on the rear two, and receive a load from the front side of the column 1. The load can be effectively received by the long anchor bolt B on the front side.

以上のような構成の支柱１は、前フランジ部４の前面を車道側に向けて、前記地覆部に埋設されたアンカーボルトＢをベース部３のアンカーボルト挿通用孔３３、３４に挿通してナットＮで締め付けることにより地覆部上に設置され、前フランジ部４の横ビーム取付板部４５に横ビーム２を取付けることにより、防護柵Ｐが構成される。   The strut 1 having the above-described configuration is configured such that the anchor bolt B embedded in the ground covering portion is inserted into the anchor bolt insertion holes 33 and 34 of the base portion 3 with the front surface of the front flange portion 4 facing the roadway side. The protective fence P is constructed by installing the horizontal beam 2 on the horizontal beam mounting plate portion 45 of the front flange portion 4.

かかる防護柵Ｐによれば、支柱１の前側から荷重を受けた際に、アンカーボルトにかかる力が分散されるので、前フランジ部４及び後フランジ部５の傾倒時によるアンカーボルトＢにかかる引抜き力を緩和することができる。   According to such a protective fence P, the force applied to the anchor bolt is dispersed when a load is applied from the front side of the support column 1, so that the pull-out applied to the anchor bolt B when the front flange portion 4 and the rear flange portion 5 are tilted. Can ease the power.

尚、本実施形態では、前フランジ部４及び後フランジ部５の横幅が上下方向全域に亘って一定幅である場合について説明したが、これに限ったものではなく、いずれか一方、又は両方とも、例えば上側ほど幅狭となる場合など一定幅でなくてもよい。   In addition, although this embodiment demonstrated the case where the horizontal width of the front flange part 4 and the rear flange part 5 was a fixed width over the up-down direction whole region, it was not restricted to this, either one or both For example, when the width is narrower toward the upper side, the width may not be constant.

また、本発明の趣旨を逸脱しない範囲で、上記の実施形態に対し適宜変更、改良等が加えられたものも本発明の範囲内である。例えば、前フランジ部４の垂直立上部４１、横ビーム取付板部４５及び後フランジ部５の支持板部５３については、ベース部３と直角となされることには限定されず、前フランジ部４の垂直立上部４１及び横ビーム取付板部４５については、後フランジ部５側に傾斜して形成されていてもよく、また後フランジ部５の支持板部５１についても、前フランジ部５側に傾斜して形成されていてもよい。   In addition, it is within the scope of the present invention to appropriately modify or improve the above embodiment without departing from the spirit of the present invention. For example, the vertical upright portion 41 of the front flange portion 4, the horizontal beam mounting plate portion 45, and the support plate portion 53 of the rear flange portion 5 are not limited to being perpendicular to the base portion 3, and the front flange portion 4 The vertical upright portion 41 and the horizontal beam mounting plate portion 45 may be formed to be inclined toward the rear flange portion 5, and the support plate portion 51 of the rear flange portion 5 is also located toward the front flange portion 5. It may be formed to be inclined.

そして図２に記載の、ベース部３の後端と後フランジ部５の張出板部５３下端との距離Ｔが２０ｍｍ以下であり、かつ後フランジ部５の屈曲部５２の角度αが１４０°〜１７０°の範囲である時、後フランジ部５が張出板部５３の下端で傾倒されず、屈曲部５２を支点にして後方側に良好に傾倒される。なおベース部３の後端と後フランジ部５の張出板部５３下端との距離Ｔについては、支柱の製造上、１０ｍｍ以上とするのが好ましい。   2, the distance T between the rear end of the base portion 3 and the lower end of the overhang plate portion 53 of the rear flange portion 5 is 20 mm or less, and the angle α of the bent portion 52 of the rear flange portion 5 is 140 °. When the angle is in a range of ˜170 °, the rear flange portion 5 is not tilted at the lower end of the overhanging plate portion 53 and is favorably tilted rearward with the bent portion 52 as a fulcrum. The distance T between the rear end of the base portion 3 and the lower end of the overhang plate portion 53 of the rear flange portion 5 is preferably 10 mm or more in terms of manufacturing the support.

１ 支柱
２ 横ビーム
３ ベース部
３１ 上面
３２ 下面
３３ アンカーボルト挿通用孔
３４ アンカーボルト挿通用孔
４ 前フランジ部
４１ 垂直立上部
４２ 第１の屈曲部
４３ 傾斜部
４４ 第２の屈曲部
４５ 横ビーム取付板部
５ 後フランジ部
５１ 支持板部
５２ 屈曲部
５３ 張出板部
６ 連結板部
７ 支柱本体
Ｂ アンカーボルト
Ｎ ナット
Ｐ 防護柵 DESCRIPTION OF SYMBOLS 1 Support | pillar 2 Lateral beam 3 Base part 31 Upper surface 32 Lower surface 33 Anchor bolt insertion hole 34 Anchor bolt insertion hole 4 Front flange part 41 Vertical upright part 42 First bent part 43 Inclined part 44 Second bent part 45 Lateral beam Mounting plate portion 5 Rear flange portion 51 Support plate portion 52 Bending portion 53 Overhang plate portion 6 Connecting plate portion 7 Column body B Anchor bolt N Nut P Guard fence

Claims (2)

道路側縁の地覆部に立設された支柱の間に横ビームが取付けられた防護柵であって、前記支柱は、支柱本体と平板状のベース部とを備え、前記支柱本体は、前後に相対する前フランジ部及び後フランジ部と、前後両フランジ部を連結する連結板部とからなる断面略Ｈ型となされ、前記前フランジ部は、その下端がベース部の上面に取付けられると共に、横ビームが取付けられる横ビーム取付板部が上方に向けて立ち上げられ、前記後フランジ部は、前記前フランジ部の横ビーム取付板部と相対向して上方に向けて立ち上がる支持板部が前フランジ部の幅より細幅で形成されると共に、下部において前記支持板部より後方側に張り出された張出板部の下端がベース部の上面に取付けられ、前記ベース部は、前後部にそれぞれ設けられたアンカーボルト挿通用孔にアンカーボルトが挿通されて地覆部に固定されると共に、前後部の前記アンカーボルト挿通用孔のいずれもが、ベース部の上面にそれぞれ取付けられた前フランジ部の下端と後フランジ部の張出板部の下端との間に設けられていることを特徴とする防護柵。   A protective fence in which a transverse beam is attached between columns that are erected on the ground covering portion of the road side edge, wherein the column includes a column body and a flat base, and the column body includes front and rear The front flange portion and the rear flange portion opposed to each other, and a connecting plate portion that connects the front and rear flange portions are substantially H-shaped in cross section, and the front flange portion has its lower end attached to the upper surface of the base portion, A horizontal beam mounting plate portion to which the horizontal beam is mounted is raised upward, and the rear flange portion is opposed to the horizontal beam mounting plate portion of the front flange portion and a support plate portion that rises upward is opposed to the front flange portion. The lower end of the projecting plate portion that is formed to be narrower than the width of the flange portion and projecting rearward from the support plate portion at the lower portion is attached to the upper surface of the base portion, and the base portion is attached to the front and rear portions. Each provided anchor Anchor bolts are inserted through the bolt insertion holes and fixed to the ground cover, and both the front and rear anchor bolt insertion holes are respectively attached to the lower surface of the front flange portion and the rear of the front flange portion. A protective fence provided between the flange plate and the lower end of the overhang plate portion. 前記前フランジ部は、ベース部の上面に下端が取付けられて前記上面から垂直に立ち上がる垂直立上部と、該垂直立上部の上端を第１の屈曲部として、この第１の屈曲部から斜め後方に向けて傾斜状に立ち上がる傾斜部と、該傾斜部の上端を第２の屈曲部として、この第２の屈曲部から上方に向けて立ち上がる横ビーム取付板部とを備え、前記後フランジ部は、前記前フランジ部の横ビーム取付板部と相対向して上方に向けて立ち上がる支持板部の下端を屈曲部として、この屈曲部から後方側に下り傾斜状で張り出された張出板部が形成され、該張出板部の下端がベース部の上面に取付けられていることを特徴とする請求項１に記載の防護柵。   The front flange portion has a lower end attached to the upper surface of the base portion and rises vertically from the upper surface, and an upper end of the vertical upright portion is defined as a first bent portion, and obliquely rearward from the first bent portion. And a lateral beam mounting plate portion rising upward from the second bent portion with the upper end of the inclined portion as a second bent portion, and the rear flange portion is The projecting plate portion projecting in a downwardly inclined manner from the bent portion to the rear side with the lower end of the support plate portion rising upward facing the transverse beam mounting plate portion of the front flange portion as a bent portion The protective fence according to claim 1, wherein a lower end of the projecting plate portion is attached to an upper surface of the base portion.
JP2010250366A 2010-11-09 2010-11-09 Guard fence Pending JP2012102490A (en)

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JP2020084645A (en) * 2018-11-28 2020-06-04 エフエムレーリング株式会社 Pole for guard fence and guard fence

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JP2007315055A (en) * 2006-05-26 2007-12-06 Sumikei-Nikkei Engineering Co Ltd Post for protective fence
JP2009185480A (en) * 2008-02-05 2009-08-20 Sekisui Jushi Co Ltd Strut for road

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020084645A (en) * 2018-11-28 2020-06-04 エフエムレーリング株式会社 Pole for guard fence and guard fence

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