JP2006009378A - Foundation overturning prevention construction and foundation overturning prevention device of snow-fence - Google Patents

Foundation overturning prevention construction and foundation overturning prevention device of snow-fence Download PDF

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JP2006009378A
JP2006009378A JP2004187010A JP2004187010A JP2006009378A JP 2006009378 A JP2006009378 A JP 2006009378A JP 2004187010 A JP2004187010 A JP 2004187010A JP 2004187010 A JP2004187010 A JP 2004187010A JP 2006009378 A JP2006009378 A JP 2006009378A
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foundation
snow
fence
foundation concrete
support
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JP4336257B2 (en
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Kazuhiro Koseki
和廣 小関
Yasunori Yoshida
泰則 吉田
Hideki Ishiyama
秀樹 石山
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Tokyo Seiko Co Ltd
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Tokyo Seiko Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a construction method capable of preventing the foundation of a snow-fence from being turned over in against wind rather easily at low cost in a short period and a means suitable for performing the construction method. <P>SOLUTION: The anti-road side face of a foundation concrete 3 of the existing snow-fence 2 formed by installing snow preventive plates on columns 1 is exposed, an overturning prevention device 4 having a retaining part 4a and a support part 4b with a bottom side put on the retaining part is disposed near the anti-road side face of the foundation concrete 3, and the support part 4b is joined to the foundation concrete 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は防雪柵の基礎転倒防止工とこれに好適な転倒防止具に関する。   The present invention relates to a basic fall prevention work for a snow fence and a fall prevention tool suitable for this.

降雪地域においては、防雪、防風対策として、道路や駐車場などの側部に沿って防雪柵が設置されている。かかる防雪柵は種々のものがあり、支柱間に複数の防雪板をある範囲の角度たとえば２０〜３０度の傾斜を持たせて多段状に配置し、吹雪や強風時に畑などの道路外から道路側に風を誘導して雪を吹払う吹払い式のものが多く用いられており、降雪季を過ぎたときに折り畳むことができるものなども使用されている。   In snowfall areas, snow fences are installed along the sides of roads and parking lots as snow and wind protection measures. There are various types of snow fences, and a plurality of snow plates are arranged in multiple stages with a certain range of angles, for example, 20 to 30 degrees between pillars, and roads from outside roads such as fields during snowstorms and strong winds. A blower type that blows snow by guiding the wind to the side is often used, and one that can be folded when the snowy season is over is also used.

こうした防雪柵は、一般的に、「正風」すなわち反道路側から道路側ないし駐車場側へ向かう風に対する耐荷重を設計基準として、地盤にアンカー金具類を埋め込んだ基礎コンクリートをブロック状に形成して、鋼材からなる支柱基礎を構築していた。
しかしながら、防雪柵に対しては、正風のみならず、道路側から反道路側に吹く「逆風」も作用する。この逆風に対しては耐荷重不足になるので、基礎ボリュームが大荷重に耐えられず、基礎が反道路側に転倒して、上部構造(防雪柵本体)が破損する事故が頻発していた。 Such snow fences are generally made up of basic concrete in which anchor metal fittings are embedded in a block shape in the form of “normal wind”, that is, load resistance against the wind from the opposite road side to the road side or parking lot side. In the meantime, a pillar foundation made of steel was constructed.
However, not only the normal wind but also the “back wind” blowing from the road side to the opposite road side acts on the snow fence. Since the load resistance was insufficient for this headwind, the foundation volume could not withstand a heavy load, and the foundation fell to the opposite side of the road, causing accidents in which the upper structure (the snow fence main body) was damaged.

こうした場合、従来では、上部構造を取替え、基礎を再設置することで対応していたが、これは抜本的な対策ではないので、逆風により再び転倒することを避けられなかった。
この対策としては、逆風にも耐えられるようにコンクリートを使用して既存の基礎コンクリートに打ち継ぎを行うことで基礎のボリュームアップを図ることが挙げられるが、大掛りな工事となり、また、冬季におけるコンクリートの養生の難しさなどからの通年施工ができず、かつまた、土砂を掘削した場合には残土の処理も煩雑なものなり、施工性が芳しくないとともに工事費が高くなる問題があった。
特開平１０−１８２３３号公報 In such a case, conventionally, the superstructure was replaced and the foundation was re-installed, but this was not a drastic measure, so it was inevitable that the head would fall again due to headwind.
As measures against this, it is possible to increase the volume of the foundation by using concrete to be able to withstand headwinds, and to increase the volume of the foundation. Due to the difficulty in curing the concrete, year-round construction was not possible, and when excavating the earth and sand, the disposal of the remaining soil was complicated, resulting in poor workability and high construction costs.
Japanese Patent Laid-Open No. 10-18233

本発明は前記のような問題点を解消するためになされたもので、その目的とするところは、防雪柵基礎の逆風時の転倒防止を、比較的簡単に、短期間で安価に実現できる工法とこれの実施に好適な手段を提供することにある。   The present invention has been made to solve the above-described problems, and the object of the present invention is to provide a method for preventing the fall of the snow fence foundation during a headwind relatively easily and inexpensively in a short period of time. And providing a suitable means for implementing this.

上記目的を達成するため本発明は、基礎コンクリート上に立設した支柱に防雪板を装架させた防雪柵において、支圧部分とサポート部分を備えた転倒防止具を用い、支圧部分を基礎コンクリート反道路側面の近傍地盤に位置させ、サポート部分を前記基礎コンクリートに結合して転倒防止補強を行なうことを特徴としている。
また、本発明の防雪柵基礎転倒防具は、支圧板と、支圧板に固定される底部と、基礎コンクリートから突出するアンカーに連結される前部を有するサポート部材を備えていることを特徴としている。
また、本発明の防雪柵基礎転倒防具は、支圧板とサポート部材が一体化された成形体からなり、サポート部が基礎コンクリートから突出するアンカーに対して連結される前部を有していることを特徴としている。 To achieve the above object, the present invention provides a snow fence in which a snow prevention plate is mounted on a pillar erected on a foundation concrete, and uses a fall prevention tool having a bearing portion and a support portion. It is characterized in that it is positioned in the vicinity of the concrete anti-road side surface, and the support portion is connected to the foundation concrete to prevent overturning.
The snow fence foundation overturning protector of the present invention includes a support member having a bearing plate, a bottom portion fixed to the bearing plate, and a front portion connected to an anchor protruding from the foundation concrete. .
In addition, the snow fence foundation overturning protector of the present invention is formed of a molded body in which the bearing plate and the support member are integrated, and the support portion has a front portion connected to the anchor protruding from the foundation concrete. It is characterized by.

本発明の防雪柵基礎転倒防止工によるときには、転倒防止具をの基礎コンクリートの近傍に配してサポート部分を基礎コンクリートと結合することで基礎転倒防止を図るので、コンクリートのうち継ぎといった大規模な工事を要さず、簡単な作業により既設の防雪柵における転倒防止を達成することができ、短期間の工期でしかも通年施工で行なえ、使用する部材も簡単なもので足りるので、効果の割に施工費用を安くすることができるというすぐれた効果が得られる。   In the case of the snow fence foundation fall prevention work of the present invention, the fall prevention tool is arranged in the vicinity of the foundation concrete and the support portion is combined with the foundation concrete to prevent foundation fall. With no work required, it is possible to prevent the existing snow fence from falling over by simple work, and it can be done in a short period of time and through full-year construction, and simple materials can be used. The excellent effect that construction costs can be reduced is obtained.

また、本発明の防雪柵基礎転倒防止具によれば、支圧板を基礎コンクリートの反道路側面に隣接して配し、サポート部材を基礎コンクリート反道路側表面に当てて結合する簡易な作業で補強が完了する。また、サポート部材を共通部品とし、異なる寸法の支圧板への配設数を変えることで簡単に必要強度に対応することができる。
防雪柵基礎転倒防止具の他のものによれば、支圧部とサポート部が一体化された一部材であるため、部品数が少なくてすみ、施工も簡単であるという効果が得られる。 In addition, according to the snow fence foundation fall prevention device of the present invention, the bearing plate is arranged adjacent to the side of the foundation concrete on the anti-road side, and the support member is applied to the surface of the foundation concrete on the anti-road side for reinforcement. Is completed. In addition, it is possible to easily cope with the required strength by using the support member as a common component and changing the number of support plates arranged on different pressure bearing plates.
According to the other snow protection fence foundation overturn prevention device, since the supporting pressure part and the support part are an integrated member, the number of parts can be reduced and the construction can be easily performed.

転倒防止具の基礎コンクリートへの結合は、基礎コンクリート反道路側面に埋め込んだアンカーの反道路側に突出する端部にサポート分部を連結することで行なわれる。
これによれば、転倒防止具をしっかりと基礎コンクリートと一体化することができるので、逆風時の強い荷重を安定的に受け止めて、基礎の転倒を防止できる。 The fall prevention tool is connected to the foundation concrete by connecting a support portion to the end of the anchor embedded on the side of the foundation concrete anti-road and projecting to the anti-road side.
According to this, since the overturn prevention tool can be firmly integrated with the foundation concrete, a strong load during backwind can be stably received, and the foundation can be prevented from overturning.

サポート部材は鋼材を組付け接合したフレーム状をなしている。
これによればアングル効果により強度が高く、また比較的軽量で、現場での取扱いも容易になる。
支圧板ないし支圧部は後半域に傾斜部を有しているものを含んでいる。
これによれば、支圧板ないし支圧部の後部が地盤から浮かず、有効支圧面積が増し、全面積を支持面積とすることができるので、一段と強い逆風にも基礎転倒を防止できる。 The support member has a frame shape in which steel materials are assembled and joined.
According to this, the strength is high due to the angle effect, and it is relatively light weight and easy to handle on site.
The bearing plate or bearing part includes one having an inclined part in the second half region.
According to this, since the rear part of the bearing plate or the bearing part does not float from the ground, the effective bearing area increases, and the entire area can be used as the supporting area.

以下添付図面を参照して本発明の実施例を説明するが、これに限定されるものではない。
図１と図２は本発明による基礎転倒防止工を適用して強化された吹き払い式の防雪柵の一例を示しており、１、１はＨ形鋼や鋼パイプなどで作られ、道路端の道路延長方向に沿って所定の間隔で配された支柱、２は前記支柱１，１間に多段状に配された防雪板である。 Embodiments of the present invention will be described below with reference to the accompanying drawings, but are not limited thereto.
1 and 2 show an example of a blow-off type snow fence strengthened by applying the foundation fall prevention work according to the present invention. 1, 1 is made of H-shaped steel, steel pipe, etc. The pillars 2 and 2 arranged at predetermined intervals along the road extending direction are provided with snow protection plates arranged in multiple stages between the pillars 1 and 1.

この例においては、各防雪板２は、両端部に支柱にガイドされる支軸２ａを突設しており、かつ上位側の防雪板の支軸２ａは次位の防雪板の上端部とリンク２ｂにより連結されている。そして、２段目以降の防雪板の上端にはリンク２ｂの拡開角度を規制するストッパー２ｃが設けられ、最上位の防雪板をロープ２ｄで吊持し、最下位の防雪板をピン２eなどで支柱に固定することで各防雪板２，２が道路側にたとえば２０〜３０度で下傾し、それにより吹雪や強風を道路側に偏向させ、路面の積雪や吹溜りを吹払うようになっている。   In this example, each snow protection plate 2 is provided with a support shaft 2a that is guided by a column at both ends, and the support shaft 2a of the upper snow protection plate is linked to the upper end portion of the next snow protection plate. It is connected by 2b. A stopper 2c for restricting the expansion angle of the link 2b is provided at the upper end of the second and subsequent snow protection plates. The uppermost snow protection plate is suspended by a rope 2d, and the lowermost snow protection plate is pin 2e. By fixing the snowboards 2 and 2 to the road side, the snowboards 2 and 2 are inclined downward at, for example, 20 to 30 degrees, thereby deflecting snowstorms and strong winds toward the roadside, and blowing off snow and puddles on the road surface. It has become.

前記支柱１，１の鉛直上の地盤にはブロック状の基礎コンクリート３が構築され、これにアンカー金具３ａが埋設され、支柱基端部のステーつきの座盤１１が基礎コンクリート天面に載置されるとともに前記アンカー金具３０に締結一体化されている。   A block-shaped foundation concrete 3 is constructed on the ground vertically above the pillars 1, 1, anchor metal fittings 3 a are embedded therein, and a seat base 11 with a stay at the base end of the pillar is placed on the top surface of the foundation concrete. In addition, the anchor fitting 30 is fastened and integrated.

４は本発明で特徴とする転倒防止具であり、この例では、支圧板４ａとサポート部材４ｂ、４ｂを有し、前記基礎コンクリート３の反道路側部位に支圧板４ａが配置され、サポート部材４ｂ、４ｂをもって前記基礎コンクリートの反道路側面に結合一体化され、これにより基礎コンクリート３の底面積が広げられている。   Reference numeral 4 denotes a tipping prevention device characterized by the present invention. In this example, there is a support plate 4a and support members 4b and 4b, and the support plate 4a is arranged on the side of the foundation concrete 3 opposite to the road. 4b and 4b are combined and integrated with the side of the foundation concrete opposite to the road, thereby expanding the bottom area of the foundation concrete 3.

図２ないし図８は本発明の基礎転倒防止工を工程順に示しており、まず、図２（ａ）のように、基礎コンクリート３の反道路側に接している土層Ｄがあれば、基礎コンクリート３の反道路側面３０の好ましくは全高を露出させるように穴５を掘削する。
この穴５の大きさは、転倒防止具４を配置するに十分なものでよいが、栗石などの基礎層３´の表面とほぼ同じレベルの穴底地盤５０は均一に敷き均し、場合によっては砕石類を用いて固める。 FIGS. 2 to 8 show the foundation overturn prevention work of the present invention in the order of steps. First, as shown in FIG. 2 (a), if there is a soil layer D in contact with the anti-road side of the foundation concrete 3, the foundation The hole 5 is drilled so as to expose preferably the entire height of the anti-road side surface 30 of the concrete 3.
The size of the hole 5 may be sufficient to dispose the fall prevention tool 4, but the hole bottom ground 50 at the same level as the surface of the base layer 3 'such as chestnut is uniformly spread, and in some cases Is hardened using crushed stones.

次に、露出されている基礎コンクリート３の反道路側面３０にアンカー挿着用の横穴３００，３００をドリルなどの工具により穿設する。この状態が図３であり、横穴３００，３００はこの例では左右と上下に計４本、後述するサポート部材４ｂ、４ｂの結合用部に対応する高さレベルと幅方向位置に設けられる。   Next, the horizontal holes 300 and 300 for inserting anchors are drilled in the exposed side surface 30 of the foundation concrete 3 with a tool such as a drill. This state is shown in FIG. 3, and in this example, a total of four horizontal holes 300, 300 are provided at the height level and the width direction position corresponding to the connecting portions of support members 4b, 4b described later.

次いで、前記各横穴３００，３００に、所要長さが基礎コンクリート３の反道路側面３０から結合用自由端６０として突出するようにボルト状のアンカー６を打ち込む。前記アンカー６の限定はないが、速乾強度が出るタイプでかつマイナス気温でも対応できるように樹脂系の接着材を用いたいわゆるケミカルアンカーが好適である。   Next, the bolt-shaped anchor 6 is driven into each of the lateral holes 300 and 300 so that the required length protrudes from the anti-road side surface 30 of the foundation concrete 3 as the free end 60 for coupling. The anchor 6 is not limited, but a so-called chemical anchor using a resin-based adhesive is suitable so that it can be used in a type that provides quick drying strength and can be used even at minus temperatures.

こうして、アンカー６，６が固定されたならば、穴５内に前記転倒防止具４を装入する。転倒防止具４は、作業性と作業能率の点から、好適には、厚い鉄板、鋼板（好ましくは防錆処理を施したもの）、コンクリート板などから選択される支圧板４ａにサポート部材４ｂ、４ｂを固定したアッセンブリーが用いられる。サポート部材４ｂ、４ｂは、底部４０と前部４１とそれらを結ぶ連結部４２を有している。   Thus, when the anchors 6 and 6 are fixed, the fall prevention tool 4 is inserted into the hole 5. From the viewpoint of workability and work efficiency, the overturn prevention tool 4 is preferably provided with a support member 4b, a support plate 4a selected from a thick iron plate, steel plate (preferably subjected to rust prevention treatment), concrete plate, and the like. An assembly with 4b fixed is used. The support members 4b and 4b have a bottom portion 40, a front portion 41, and a connecting portion 42 that connects them.

この例ではサポート部材４ｂは、Ｌ形鋼などの鋼材（好ましくは防錆処理を施したもの）を側面から見て直角三角形状ないしそれに類する多角形状を呈するように組付溶接したフレームからなっており、底辺４０の板面にボルト挿通穴４００，４００が設けられ、これらにボルト４ｄを通し、支圧板４ａに穿設してある雌ねじ穴４０１に螺合することで支圧板４ａと一体化している。
もちろんこれに限定されるものではなく、ボルトを支圧板４ａ側に植え立て、これに底部４０のボルト穴を通し、ナットで緊締してもよいし、溶接などで底部４０を支圧板４ａと一体化してもよい。 In this example, the support member 4b is made of a frame in which a steel material such as L-shaped steel (preferably subjected to rust prevention treatment) is assembled and welded so as to have a right triangle shape or similar polygonal shape when viewed from the side. Bolt insertion holes 400, 400 are provided on the plate surface of the bottom 40, and bolts 4d are passed through these holes and screwed into female screw holes 401 formed in the pressure bearing plate 4a so as to be integrated with the pressure bearing plate 4a. Yes.
Of course, the present invention is not limited to this, and a bolt may be planted on the side of the bearing plate 4a, a bolt hole in the bottom 40 may be passed through this, and tightened with a nut, or the bottom 40 may be integrated with the bearing plate 4a by welding or the like. May be used.

前記サポート部材４ｂ、４ｂはこの例では２つ用いられ、支圧板４ａに平行状に配置されている。各サポート部材４ｂは、前部４１が支圧板４ａの前端と略一致させられており、前記アンカー６の突出部６０に対応する位置に、連結用部部分としての座片４１０，４１０を有している。座片４１０は帯板を鉛直辺部４１に溶接するなどして設けられ、突出部６０の貫通を許す穴４１１が設けられている。   Two support members 4b and 4b are used in this example, and are arranged in parallel to the support plate 4a. Each support member 4b has a front portion 41 substantially aligned with a front end of the bearing plate 4a, and has seat pieces 410 and 410 as connecting portions at positions corresponding to the protruding portions 60 of the anchor 6. ing. The seat piece 410 is provided, for example, by welding a strip to the vertical side portion 41, and is provided with a hole 411 that allows the protruding portion 60 to pass therethrough.

前記のような支圧板４ａを穴底地盤５０に接地させつつ、基礎コンクリート３の反道路側面３０にサポート部材４ｂ、４ｂを接近させれば、サポート部材４ｂ、４ｂの前部４１が反道路側面３０に当接し、座片４１０，４１０の各穴４１１からアンカー６の突出部６０が突出する。
そこで、突出部６０にナット４ｅを螺合して緊締すれば、基礎コンクリート３と転倒防止具４とが一体化される。これが図５の基本工事完了の状態である。 If the support members 4b and 4b are brought close to the anti-road side surface 30 of the foundation concrete 3 while the above-mentioned bearing plate 4a is grounded to the hole bottom ground 50, the front portion 41 of the support members 4b and 4b becomes the anti-road side surface. 30, the protruding portion 60 of the anchor 6 protrudes from each hole 411 of the seat pieces 410, 410.
Then, if the nut 4e is screwed and tightened to the protrusion part 60, the foundation concrete 3 and the fall prevention tool 4 will be integrated. This is the state of basic construction completion in FIG.

前記穴５を掘削した土砂Ｄは、図６のように転倒防止具４の全部または一部を覆うように埋め戻せばよい。したがって、残土処理が不要になるので施工性が向上するとともに、景観もよくなる。   The earth and sand D excavated in the hole 5 may be backfilled so as to cover all or part of the fall prevention tool 4 as shown in FIG. Therefore, since no remaining soil treatment is required, the workability is improved and the landscape is improved.

かかる実施例の作用を説明すると、正風時には、可傾している防雪板２の間隙から風が道路面に吹き当てられ、積った雪を吹払うが、逆風が作用した場合、可傾している防雪板２は受圧面積が広く、風が逃げにくいので強い風圧を受け、それにより支柱に反道路側への強い曲げモーメントが働き、基礎コンクリートが転倒荷重を受ける。
しかし、本発明では、基礎コンクリート反道路側面３０の下部域にサポート部材４ｂ、４ｂが前部４１をもって結合されていて、サポート部材の底部４０が基礎コンクリート反道路側面に近接した地盤５０に据えられた支圧板４ａに一体化している。
このため、図６の斜めの点線で示すように、基礎コンクリート３は実質的に底面積が広げられたものとなり、それにより反道路側への荷重に対する抵抗が著しく増大し、逆風による転倒事故の発生が防止される。 本発明は基礎コンクリート３の反道路側に腹付け土が全くない場合も有効である。 The operation of this embodiment will be described. When the wind is normal, the wind is blown against the road surface from the gap of the tilted snow protection plate 2 and blows off the accumulated snow. The snow-prevention plate 2 has a large pressure-receiving area and is difficult to escape from the wind, so that it receives a strong wind pressure, whereby a strong bending moment to the anti-road side acts on the column, and the foundation concrete receives a tipping load.
However, in the present invention, the support members 4b and 4b are joined to the lower region of the foundation concrete anti-road side surface 30 with the front portion 41, and the bottom portion 40 of the support member is placed on the ground 50 close to the side of the foundation concrete anti-road side. It is integrated with the supporting plate 4a.
For this reason, as shown by the slanted dotted line in FIG. 6, the foundation concrete 3 has a substantially expanded bottom area, which greatly increases the resistance to the load on the anti-road side, and the accident of a tipping accident due to headwinds. Occurrence is prevented. The present invention is also effective when there is no belly soil on the side of the foundation concrete 3 opposite to the road.

図９は本発明の基礎転倒防止具の第２実施例を示している。この例では、サポート部材４ｂが、基礎コンクリート３の反道路側面に対して３箇所結合されている。これは、基礎コンクリートの体積が大きい場合や，耐荷重を強くするのに好適である。
サポート部材４ｂは第１実施例と同様なものが用いられ、支圧板４ａ上に平行状に３個配列され、それぞれ底部４０が支圧板に固定され、各前部が基礎コンクリート３の反道路側面３０に結合される。
他の構成と工程は第１実施例と同様であるから、説明は援用する。 FIG. 9 shows a second embodiment of the basic overturn prevention device of the present invention. In this example, the support member 4b is coupled to the anti-road side surface of the foundation concrete 3 at three locations. This is suitable when the volume of the foundation concrete is large or when the load resistance is increased.
The same support member 4b as in the first embodiment is used, and three support members 4b are arranged in parallel on the bearing plate 4a, each bottom 40 is fixed to the bearing plate, and each front part is an anti-road side of the foundation concrete 3. 30.
Since other structures and processes are the same as those in the first embodiment, the description is incorporated.

本発明は図示するもののほか、種々の態様を採用することができる。
１）サポート部材４ｂは、側面が三角形状である場合に限らず任意であり、図１０のように、後部に立ち上がりを有していもよい。あるいは図１１のような斜部と突っ張り部を有するような異形状であってもよい。さらに、サポート部材４ｂは、底辺部４０と前辺部４１を多角状のプレートでつないだものでもよいし、断面が直角三角形などをなした筒状体あるいは、後述する図１２のサポート部（材）のように、前部の両側が９０度屈曲して後方に伸びる平面コ字状の部体を用いてもよい。
２）支圧板４ａは、それ自体の前端が図１１のようにＬ状などのブラケット４ｃによりアンカー６と結合されてもよい。 The present invention can employ various modes other than those shown in the drawings.
1) The support member 4b is not limited to the case where the side surface has a triangular shape, and may be arbitrary, and may have a rise at the rear as shown in FIG. Alternatively, it may be an irregular shape having a slanted part and a projecting part as shown in FIG. Further, the support member 4b may be formed by connecting the bottom side portion 40 and the front side portion 41 with a polygonal plate, a cylindrical body whose cross section is a right triangle or the like, or a support portion (material shown in FIG. 12 described later). As shown in FIG. 5B, a planar U-shaped part that is bent 90 degrees on both sides of the front part and extends backward may be used.
2) The bearing plate 4a may have its front end coupled to the anchor 6 by an L-shaped bracket 4c as shown in FIG.

３）作業性の面から支圧板４ａとサポート部材４ｂは穴外で組立ててアッセンブリーとされるが、場合によっては別々に持ち込んでアッセンブリー化を行なってもよい。
４）基礎コンクリート３の反道路側面に対する連結部分は、座片を用いずに、直接、前部の板面を用いてもよい。また、座片は場合によっては左右のサポート部材に渡される帯状であってもよい。
５）支圧板４ａの基礎コンクリート３の反道路側面に対する配置高さレベルは、通常、基礎コンクリート３の底面と同レベルとされるが、場合によっては、それよりも適度に高いレベルであってもよい。 3) From the standpoint of workability, the bearing plate 4a and the support member 4b are assembled outside the hole to form an assembly. However, depending on the case, they may be assembled separately for assembly.
4) As for the connection part with respect to the anti-road side surface of the foundation concrete 3, you may use the plate | board surface of a front part directly, without using a seat piece. Further, the seat piece may have a belt-like shape passed to the left and right support members depending on circumstances.
5) The placement height level of the bearing plate 4a with respect to the side of the anti-road of the foundation concrete 3 is usually the same level as the bottom surface of the foundation concrete 3, but in some cases even a moderately higher level than that Good.

６）本発明の基礎転倒防止具４は、サポート部と支圧部が一体でもよい。図１２はサポート部と支圧部をたとえばコンクリートや強化プラスチックなどの成形体で構成している。この成形体では、サポート部材４ｂは、壁状の前部４０にアンカー６の突出部６０を突出させる孔４１１を有している。
図１３と、図１４は図１２の基礎転倒防止具４を適用した例を示しており、前部４０を基礎コンクリート３の反道路側面に当接し、アンカー６の突出部６０にナットを螺合することで工事が完了するので、簡単である。 6) As for the basic fall prevention tool 4 of this invention, a support part and a support pressure part may be integral. In FIG. 12, the support part and the bearing part are formed of a molded body such as concrete or reinforced plastic. In this molded body, the support member 4b has a hole 411 through which the protruding portion 60 of the anchor 6 protrudes from the wall-shaped front portion 40.
FIGS. 13 and 14 show an example in which the foundation overturn prevention device 4 of FIG. 12 is applied. The front portion 40 abuts against the side of the foundation concrete 3 opposite to the road, and the nut is screwed into the protruding portion 60 of the anchor 6. It is easy because the work is completed.

７）支圧板４ａは、平らな盤である場合に限らず、図１０のように基礎コンクリートから離間する後半部域に傾斜部４ａ´を有していてもよい。
これによれば、傾斜部４ａ´は、基礎コンクリート３の反道路の土層が平らである場合には土層に食い込み、反道路の腹付け土が所定の水平状から先に傾斜がある場合にはその傾斜に合致して、支圧板の後半部を浮かさず支圧有効面積を十分なものにすることができる。 7) The bearing plate 4a is not limited to being a flat board, and may have an inclined portion 4a 'in the rear half area separated from the basic concrete as shown in FIG.
According to this, when the soil layer of the anti-road of the foundation concrete 3 is flat, the inclined portion 4a ′ bites into the soil layer, and the anti-road belly soil is inclined forward from a predetermined horizontal shape. In conformity with the inclination, the effective area of the bearing can be made sufficient without floating the latter half of the bearing plate.

本発明を実際に適用した結果を次に示す。
実験対象の防雪柵は既設の吹払い柵であり、支柱は１００×１００で高さ３５００ｍｍのＨ形鋼、支柱間隔は４ｍとし、防雪板は１．６ｔ×５５０×３８００ｍｍを左右の支柱間に４段、道路側に鉛直に対して２３度の角度で支架させた仕様のものである。基礎は、８００×８００ｍｍ、高さ１４００ｍｍのコンクリートである。 The results of actual application of the present invention are as follows.
The snow fence to be tested is an existing blow-off fence, the struts are 100 x 100, H-shaped steel with a height of 3500 mm, the strut spacing is 4 m, and the snow guard plates are 1.6 t x 550 x 3800 mm between the left and right struts. It is a specification of four stages and is supported at an angle of 23 degrees with respect to the vertical on the road side. The foundation is concrete of 800 × 800 mm and height of 1400 mm.

かかる防雪柵を試験場に設置し、風速計を使用して監視したところ、道路側から反道路側に風速１５〜２０ｍ/secの逆風が作用したときに基礎の転倒が発生した。   When such a snow fence was installed at the test site and monitored using an anemometer, the foundation was overturned when a reverse wind with a wind speed of 15 to 20 m / sec was applied from the road side to the opposite road side.

支圧板として５４０×７００ｍｍ、厚さ１２ｍｍの厚鋼板を用い、サポート部材として、４０×４０×4ｔｍｍのＬ形鋼を高さ５１６ｍｍ、奥行き５１６ｍｍの略直角正三角形状に溶接して組立て、鉛直辺部に５０×４．５ｍｍ×１００ｍｍの座片を溶接したものを用いた。このサポート部材を２つ、６００ｍｍの間隔をおいて支圧板に配し、底辺部をボルトで固定して転倒防止具とした。   A steel plate with a thickness of 540 × 700 mm and a thickness of 12 mm is used as a bearing plate, and an L-shaped steel with a size of 40 × 40 × 4 tmm is welded and assembled into a substantially right-angled triangular shape with a height of 516 mm and a depth of 516 mm as a support member. What welded the seat piece of 50x4.5mmx100mm to the part was used. Two of these support members were arranged on the bearing plate at an interval of 600 mm, and the bottom portion was fixed with bolts to form a tipping prevention tool.

前記基礎コンクリートの反道路側面に幅方向間隔５４０ｍｍ、下面から５０ｍｍの位置から高さ方向間隔４００ｍｍで計４つの横穴を明け、これらにエポキシアクリレート樹脂を接着剤として、太さ１２ｍｍ、長さ２００ｍｍのアンカーボルトを埋め込み、前記転倒防止金具を前記基礎コンクリートの直近に配し、サポート部材の座片をアンカーボルトに通してナットで固定した。   A total of four horizontal holes were made on the side of the foundation concrete on the side opposite to the road with a width direction interval of 540 mm and a height direction distance of 400 mm from the bottom surface, and epoxy acrylate resin was used as an adhesive with a thickness of 12 mm and a length of 200 mm. Anchor bolts were embedded, the fall-preventing metal fittings were arranged in the immediate vicinity of the foundation concrete, and the seat pieces of the support members were passed through the anchor bolts and fixed with nuts.

こうして得られた防雪柵を観察したところ、風速３０ｍ/sec.の逆風でも、全く転倒が発生せず、簡単に施工できる転倒防止金具でありながら、非常に効果的であることが確認された。   When the snow fence thus obtained was observed, it was confirmed that it was extremely effective even though it was a tip-proof metal fitting that could be easily constructed without any tipping even with a headwind of 30 m / sec.

また、基礎コンクリート１１００×１１００ｍｍ、高さ１５００ｍｍのコンクリートを使用した防雪柵は、本発明を適用しない場合、道路側から反道路側に風速１８〜３０ｍ/secの逆風が作用したときに基礎の転倒が発生した。
これに対し、支圧板として５４０×１０００ｍｍ、厚さ１２ｍｍの厚鋼板を用い、サポート部材として、４０×４０×4ｔｍｍのＬ形鋼を高さ５１６ｍｍ、奥行き５１６ｍｍの略直角正三角形状に溶接して組立て、鉛直辺部に５０×４．５ｍｍ×１００ｍｍの座片を溶接したものを用い、このサポート部材を３つ、４５０ｍｍの間隔をおいて支圧板に配し、底辺部をボルトで固定した転倒防止金具を使用した。 In addition, if the present invention is not applied to a snow fence using concrete with a foundation concrete of 1100 × 1100 mm and a height of 1500 mm, the foundation falls when a reverse wind with a wind speed of 18 to 30 m / sec acts from the road side to the opposite road side. There has occurred.
On the other hand, a steel plate having a thickness of 540 × 1000 mm and a thickness of 12 mm is used as the bearing plate, and an L-shaped steel having a size of 40 × 40 × 4 tmm is welded as a support member into a substantially right triangle having a height of 516 mm and a depth of 516 mm. Assembling, using a piece with 50 × 4.5 mm × 100 mm seat pieces welded to the vertical side, three support members, arranged on the bearing plate at an interval of 450 mm, and fixing the bottom with bolts Prevention brackets were used.

これを、基礎コンクリートの反道路側面に幅方向間隔４５０ｍｍ、下面から５０ｍｍの位置から高さ方向間隔４００ｍｍで計６つの横穴を明け、これらにエポキシアクリレート樹脂を接着剤として、太さ１２ｍｍ、長さ２００ｍｍのアンカーボルトを埋め込み、前記転倒防止金具を前記基礎コンクリートの直近に配し、サポート部材の座片をアンカーボルトに通してナットで固定した。   A total of six horizontal holes were drilled on the anti-road side of the foundation concrete at a distance of 450 mm in the width direction and at a distance of 400 mm in the height direction from the position 50 mm from the lower surface, and epoxy acrylate resin was used as an adhesive, and the thickness was 12 mm. A 200 mm anchor bolt was embedded, the fall prevention metal fitting was arranged in the immediate vicinity of the foundation concrete, and the seat piece of the support member was passed through the anchor bolt and fixed with a nut.

こうして得られた防雪柵を観察したところ、風速４０ｍ/sec.の逆風でも、全く転倒が発生せず、非常に効果的であることが確認された。
また、支圧板として、５４０×１０００ｍｍ、厚さ１２ｍｍ、３９５ｍｍの位置から後方１６０ｍｍを１３５度に屈曲したものを使用した結果、風速４５ｍ/secの逆風でも、全く転倒が発生せず、非常に効果的であることが確認された。 When the snow fence thus obtained was observed, it was confirmed that even if the wind speed was 40 m / sec.
In addition, as a support plate, using a 540 × 1000 mm, 12 mm thick, 395 mm position bent 160 mm rearward at 135 degrees, even if the wind speed is 45 m / sec, no tipping occurs and it is very effective. It was confirmed that

本発明で対象とする防雪柵は、防雪板が巻き上げ可能な自立巻上げ巻き下げ型に限らず、位置固定の自立型、自立オーバーハング型などに広く適用される。また、吹払い柵タイプのみならず、吹止め柵タイプ、吹溜柵タイプなど任意である。また、本発明は既設の防雪柵への適用が主であるが、新設防雪柵にも適用されうる。   The snow fence targeted by the present invention is not limited to the self-winding and lowering type in which the snow-preventing plate can be wound, but is widely applied to a self-standing type with a fixed position, a self-standing overhang type, and the like. Moreover, not only a blow-off fence type but also a blow-stop fence type, a puddle fence type, etc. are arbitrary. The present invention is mainly applied to existing snow fences, but can also be applied to new snow fences.

（ａ）は本発明による防雪柵の基礎転倒防止工法を適用した防雪柵の一例を示す側面図、（ｂ）は正面図である。(A) is a side view which shows an example of the snow fence which applied the basic fall prevention construction method of the snow fence by this invention, (b) is a front view. （ａ）は本発明工法の第１工程を示す側面図、（ｂ）はその側面図である。(A) is a side view which shows the 1st process of this invention construction method, (b) is the side view. 本発明の第２工程を示す側面図である。It is a side view which shows the 2nd process of this invention. （ａ）は本発明に使用する転倒防止具の部分切欠斜視図、（ｂ）はその部分図である。(A) is a partial notch perspective view of the fall prevention tool used for this invention, (b) is the fragmentary figure. 本発明の第３工程を示す側面図である。It is a side view which shows the 3rd process of this invention. （ａ）は完成状態を示す側面図、（ｂ）はその一部拡大図である。(A) is a side view showing a completed state, (b) is a partially enlarged view thereof. 完成状態を示す正面図である。It is a front view which shows a completion state. 完成状態を示す正面図である。It is a front view which shows a completion state. （ａ）は本発明の他の例を示す平面図、（ｂ）はその正面図である。(A) is a top view which shows the other example of this invention, (b) is the front view. （ａ）は支圧板の他の態様を示す斜視図、（ｂ）はその使用状態を示す側面図である。(A) is a perspective view which shows the other aspect of a bearing plate, (b) is a side view which shows the use condition. （ａ）は本発明のサポート部材の他の例を示す斜視図、（ｂ）はその使用状態の側面図である。(A) is a perspective view which shows the other example of the support member of this invention, (b) is the side view of the use condition. 本発明における転倒防止具の他の例を示す斜視図である。It is a perspective view which shows the other example of the fall prevention tool in this invention. 図１２の転倒防止具を用いて防雪柵の基礎転倒防止工法を実施した状態を示す側面図である。It is a side view which shows the state which implemented the basic fall prevention construction method of the snow fence using the fall prevention tool of FIG. 同じく平面図である。It is also a plan view.

符号の説明Explanation of symbols

１ 支柱
２ 防雪柵
３ 基礎コンクリート
４ 転倒防止金具４
４ａ 支圧板（支圧部）
４ｂ サポート部材（サポート部）
４０ 底部
４１ 前部
５ 穴
６ アンカー 1 support 2 snow guard 3 foundation concrete 4 fall prevention metal fitting 4
4a Supporting plate (supporting part)
4b Support member (support part)
40 Bottom 41 Front 5 Hole 6 Anchor

Claims (6)

基礎コンクリート上に立設した支柱に防雪板を装架させた防雪柵において、支圧部分とサポート部分を備えた転倒防止具を用い、支圧部分を基礎コンクリート反道路側面の近傍地盤に位置させ、サポート部分を前記基礎コンクリートに結合して転倒防止補強を行なうことを特徴とする防雪柵の基礎転倒防止工。   In a snow fence with a snow guard plate mounted on a pillar erected on the foundation concrete, use a fall prevention tool with a bearing part and a support part, and place the bearing part on the ground near the side of the foundation concrete anti-road. A foundation fall prevention work for a snow fence, characterized in that the support portion is joined to the foundation concrete to prevent the fall. 転倒防止具の基礎コンクリートへの結合は、基礎コンクリート反道路側面に埋め込んだアンカーの反道路側に突出する部分にサポート部分を連結することで行なわれる請求項１に記載の防雪柵の基礎転倒防止工。   The prevention of foundation fall of the snow fence according to claim 1, wherein the fall prevention device is joined to the foundation concrete by connecting a support portion to a portion of the anchor embedded in the side of the foundation concrete anti-road and projecting to the anti-road side. Engineering. 支圧板と、支圧板に固定される底部と、基礎コンクリートから突出するアンカーに連結される前部を有するサポート部材を備えていることを特徴とする防雪柵の基礎転倒防止具。   A foundation overturn prevention tool for a snow fence, comprising a support member having a support plate, a bottom portion fixed to the support plate, and a front portion connected to an anchor protruding from the foundation concrete. サポート部材が鋼材を組付け接合したフレーム状をなしている請求項３に記載の防雪柵の基礎転倒防止具。   The snowfall fence foundation overturn prevention device according to claim 3, wherein the support member has a frame shape in which steel materials are assembled and joined. 支圧板とサポート部材が一体化された成形体からなり、サポート部が基礎コンクリートから突出するアンカーに対して連結される前部を有していることを特徴とする防雪柵の基礎転倒防止具。   A foundation overturn prevention tool for a snow fence, comprising a molded body in which a bearing plate and a support member are integrated, and the support portion has a front portion connected to an anchor protruding from the foundation concrete. 支圧板が後半域に傾斜部を有しているものを含む請求項３または５に記載の防雪柵の基礎転倒防止具。   The snow fall fence foundation overturn prevention device according to claim 3 or 5, including a support plate having an inclined portion in the latter half region.
JP2004187010A 2004-06-24 2004-06-24 Snow fall fence foundation fall prevention work Expired - Fee Related JP4336257B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103290791A (en) * 2013-05-13 2013-09-11 新疆交通科学研究院 Circular-arc wind deflector
CN107905128A (en) * 2017-11-03 2018-04-13 中交第公路勘察设计研究院有限公司 Corrugated steel construction snow defence passage

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Publication number Priority date Publication date Assignee Title
JP6491002B2 (en) * 2015-03-23 2019-03-27 北海道ガソン株式会社 Foundation displacement prevention body for storm snow fence

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103290791A (en) * 2013-05-13 2013-09-11 新疆交通科学研究院 Circular-arc wind deflector
CN107905128A (en) * 2017-11-03 2018-04-13 中交第公路勘察设计研究院有限公司 Corrugated steel construction snow defence passage

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