JP2019105081A - Safety fence to install in reinforced earth wall - Google Patents

Safety fence to install in reinforced earth wall Download PDF

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JP2019105081A
JP2019105081A JP2017238194A JP2017238194A JP2019105081A JP 2019105081 A JP2019105081 A JP 2019105081A JP 2017238194 A JP2017238194 A JP 2017238194A JP 2017238194 A JP2017238194 A JP 2017238194A JP 2019105081 A JP2019105081 A JP 2019105081A
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panel
safety fence
shaped base
fence
panels
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JP7083243B2 (en
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有美 河野
Yumi Kono
有美 河野
吉実 大西
Yoshimi Onishi
吉実 大西
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Taisei Corp
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Abstract

To provide a safety fence 2 for preventing falling from a step that occurs when installing on a reinforced earth wall.SOLUTION: A safety fence 2 is configured of a pair of saddle-shaped bases 21, a support post 22 attached to the side of the saddle-shaped base 21, and a protective body 23 attached so as to connect the support post 22. The saddle-shaped base 21 is attached so as to sandwich the end of an upper panel 1. The support posts 22 are attached to the side of the saddle-shaped base 21, and the protective body 23 is also attached to connect the support post 22 and is located out of the plane of the panel 1.SELECTED DRAWING: Figure 5

Description

本発明は補強土壁に設置する安全柵に関するものである。   The present invention relates to a safety fence installed on a reinforced earth wall.

補強土壁工法の一種類として、「テールアルメ工法」（登録商標）と称する工法が広く採用されている。この工法は、ストリップと称する帯鋼の補強材を盛土内に層状に配置して、ストリップと盛土材との摩擦力による引抜抵抗力で土留効果を発揮させる工法である。
その盛土の露出面には、薄いコンクリート製のパネルを鉛直に近い角度に積み上げて崩壊を防止する。このパネルは、外側の正面から見て十字状に形成してあり、中央部を中心として上方に上片、両側に側片を、下方に下片を備えている。そのような形状のパネルを、裏込め盛土の作業と同時進行によって高さ方向に千鳥状に積み上げる。
図７に示すように、パネルの積み上げに際しては上段のパネルｘと、下段のパネルｙとの間には常にパネル高さの半分の段差ｚが生じるので、そのような段差部分からの転落事故を防止するための措置が必要となる。 A method called “tail alme method” (registered trademark) is widely adopted as one type of reinforced soil wall method. This method is a method in which reinforcing materials of strip steel called strips are arranged in layers in a filling and the retention effect is exhibited by the pullout resistance force due to the frictional force between the strips and the filling material.
On the exposed surface of the embankment, thin concrete panels are stacked at an angle close to the vertical to prevent collapse. This panel is formed in a cross shape as viewed from the front of the outside, and is provided with an upper piece at the center, a side piece at both sides, and a lower piece at the lower side. Panels of such a shape are stacked in a zigzag form in the height direction by simultaneously working with the backfilling work.
As shown in FIG. 7, when stacking panels, a step z which is half the height of the panel always occurs between the panel x in the upper stage and the panel y in the lower stage. Measures are needed to prevent this.

そのような転落防止措置として、パネルの盛土側に強固な部材を設置すると、盛土の度に盛り変えが必要となり、手数を要する。
簡易なロープを張り渡す方法では、安全性に問題がある。 If a strong member is installed on the embankment side of the panel as such a fall prevention measure, the degree of embankment needs to be changed, and it takes time.
There is a problem with safety in the simple rope stretching method.

本出願人は対策の１つとして特許文献１に提案した。水平桁２１ の一端にはパネル１のジベル１４を上下に貫通する貫通穴２１ｂを備え、水平桁２１の他端の下面には、パネル１の受穴１５に挿入する挿入棒２１ａを下向きに備え、水平桁２１には縦桟２２を備え、縦桟２２には横桟２３を備える。そして横桟２３の長さは、上段パネル１の間隔よりも長く設定した、補強土壁に設置する際に生じる段差からの転落防止用の安全柵２である。この発明は、上段パネルの側片に挿入支持部を設け、上方に向けて柵を設けた物である。   The applicant has proposed in Patent Document 1 as one of the measures. The horizontal girder 21 is provided at one end with a through hole 21b penetrating the dowel 14 of the panel 1 up and down, and at the lower surface of the other end of the horizontal girder 21 with an insertion rod 21a inserted downward into the receiving hole 15 of the panel 1 downward. The horizontal girder 21 is provided with a longitudinal bar 22 and the longitudinal bar 22 is provided with a lateral bar 23. The length of the horizontal crosspiece 23 is set to be longer than the distance between the upper panels 1, and is the safety fence 2 for preventing the fall from the step caused when installing on the reinforced earth wall. According to the present invention, the insertion support portion is provided on the side piece of the upper panel, and the fence is provided upward.

特許文献２には、容易に設置及び撤去が可能で、且つ開口部からの足の踏み外しや土砂等の落下を好適に防止することのできる簡易式防護柵として、開口部の両側に配置された各壁面部材にそれぞれ固定される支持体と、両支持体間に架け渡される棒状の横材と、開口部下端を閉鎖するように配置される上下に幅のある帯状の幅板材とを備える。さらに、各支持体に壁面部材の表面側又は裏面側に上下方向に向けて配置される棒状の縦材と、縦材の上端を壁面部材の上端部に着脱可能に固定させる取付具と、縦材に横材の端部を着脱可能に固定させる横材支持手段と、縦材に幅板材の端部を着脱可能に固定させる幅板材支持手段とを備えた簡易式防護柵が提案されている。この発明は、上段の上片パネルに係止部を設け、下段との間に生じた段差空間部に柵を設けた物である。   Patent Document 2 is disposed on both sides of the opening as a simple protection fence that can be easily installed and removed, and that can preferably prevent foot fall off from the opening and dropping of soil and the like. A support body fixed to each wall surface member, a bar-like cross member bridged between the two support bodies, and a band-like width board having a width in the upper and lower sides disposed so as to close the lower end of the opening. Furthermore, a rod-like longitudinal member disposed vertically on the front surface side or the back surface side of the wall member on each support, a fixture for detachably fixing the upper end of the longitudinal member to the upper end portion of the wall member, longitudinal A simplified protection fence has been proposed which includes cross member support means for detachably fixing the end of the cross member to the member and width plate support means for detachably fixing the end portion of the width plate to the longitudinal member. . According to the present invention, the upper upper panel in the upper stage is provided with the locking portion, and the step space formed between the upper stage panel and the lower stage is provided with the fence.

特開２０１６−１２１４５７号公報JP, 2016-121457, A 実用新案登録第３１８０８９１号公報Utility model registration 3180891 gazette

本願発明は、パネルを積み上げる補強土壁工法において、段違いに配置された空間に設ける安全柵であって、安全柵を取り付けた状態で、次のパネルの積み上げができる安全柵を開発することを課題とする。   The present invention is a safety fence provided in a staggered space, in a reinforced soil wall construction method in which panels are stacked, and it is an object to develop a safety fence which can stack the next panel in a state where the safety fence is attached. I assume.

上記のような課題を解決する本発明は次の構成を主とする。
１．補強土壁に設置する安全柵は、盛土層の外側に、高さ方向に段差を設けてパネルを積み上げる補強土壁において、水平方向の隔パネル間に形成される開口部に設置され、上段パネルである隔パネルの上片に取付けられた鞍型基部と、鞍型基部側面に設置した支柱と、支柱に取付けられた防護体からなり、防護体は上記隔パネルの外側面の面外に配置されることを特徴とする安全柵。
２．鞍型基部は、パネル外面側の外側板とパネル上片側に配置された上板とパネル内面側の内側片から形成され、外側板の下端に緩衝材が設けられており、外側板の外面側に防護柵の支柱取付部が設けられていることを特徴とする１．記載の安全柵。
３．防護柵の支柱は鞍型基部から上方に向けて設置されていることを特徴とする１．又は２．記載の安全柵。
４．防護体が開口部にも設けられていることを特徴する１．〜３．のいずれかに記載の安全柵。 The present invention for solving the problems as described above mainly has the following configuration.
1. The safety fence installed on the reinforced earth wall is installed on the opening formed between the horizontal panels in the reinforced earth wall where the panels are stacked by providing steps in the height direction outside the embankment layer. And a column mounted on the upper piece of the partition panel, a column mounted on the side surface of the column, and a guard attached to the column, the shield being disposed out of the plane of the outer surface of the panel A safety fence that is characterized by
2. The wedge-shaped base is formed of an outer plate on the outer surface side of the panel, an upper plate disposed on one side of the panel, and an inner piece on the inner surface of the panel, and a buffer is provided at the lower end of the outer plate. Are provided with support posts for guard fences. Safety fence described.
3. The columns of the guard fence are installed upward from the bowl-shaped base. Or 2. Safety fence described.
4. A protective body is also provided at the opening. ~ 3. Safety fence described in any of the.

本願発明によって、鞍型基部は、すでに設置されている上段パネルに設置され、防護柵は補強土壁の面外に位置するので、次段のパネルの設置空間は確保されるので、安全柵を外すことなく、次段のパネルの積み上げ作業を行うことができる。したがって、パネルを積み上げる補強土壁工法において、段違いに配置された空間に設ける安全柵であって、安全柵を取り付けた状態で、次のパネルの積み上げができる安全柵を実現できた。
１．本発明の安全柵は、安全柵の鞍型基部が工事箇所ですでに設置されている上段パネルで隔てられている隔パネルの上片に取付けられ、防護体は隔てられた空間に配置され、土留壁の面外に位置している。このため、本発明の安全柵を取り外すことがなく、隔パネル間に次段のパネルを設置することができる。これによって、次段のパネルを設置する間でも、開口部に安全柵が設置された状態となり、安全に施工することができる。
２．鞍型基部の外側板の下端に緩衝材が設けられているとともに、外面側に防護柵の支柱取付部が設けられているので、防護柵は確実に面外側に重心があることとなり、面外側に付勢される。このため、鞍型基部の外側板の下端部は取り付けられているパネルに圧接することとなり、パネルに圧接痕が残って、完成した補強土壁に汚れが残る恐れがあるが、本発明では緩衝材を設けることによって、これが防止され、きれいな仕上がりになる。
３．防護柵の支柱を鞍型基部から上方に向けて設けたので、既設のパネルに上に防護柵が設けられており、次段のパネル積み上げ操作の空間である上方作業が安全である。
４．防護体を隔パネル間に形成された空間にも設けることにより、この隙間からの落下も防止できる。 According to the present invention, the vertical base is installed on the upper panel already installed, and the guard fence is located out of the plane of the reinforced earth wall, so the installation space for the next stage panel is secured. It is possible to carry out the work of stacking the next panel without removing it. Therefore, in the reinforced earth wall construction method in which panels are stacked, it is possible to realize a safety fence which can be stacked in the next panel while the safety fence is provided in a space arranged in a staggered manner and the safety fence is attached.
1. The safety fence of the present invention is attached to the upper piece of the separation panel which is separated by the upper panel already installed at the construction site, and the protective body is placed in the separated space; It is located out of the surface of the earth retaining wall. For this reason, without removing the safety fence of this invention, the panel of the next step can be installed between space panels. By this, even while installing the next-stage panel, the safety fence is installed at the opening, and construction can be performed safely.
2. The shock absorbing material is provided at the lower end of the outer plate of the bowl-shaped base, and the pole attachment part of the guard fence is provided on the outer surface side, so the guard fence will surely have the center of gravity outside the plane. It is urged to. For this reason, the lower end portion of the outer side plate of the bowl-shaped base is pressed against the attached panel, and there is a possibility that the press-contact mark remains on the panel and dirt may remain on the completed reinforced earth wall. By providing the material, this is prevented and the finish is clean.
3. Since the support fence of the guard fence is provided upward from the vertical base, the guard fence is provided on the existing panel, and the upper work which is the space for the next panel stacking operation is safe.
4. By providing the protective body also in the space formed between the separation panels, it is possible to prevent the drop from the space.

補強土壁の構造を示す断面図。Sectional drawing which shows the structure of a reinforcement earth wall. 補強土壁に用いるパネルの構造の説明図であり、（ａ）パネルの例を示す図、（ｂ）パネル積み上げ途中の状態を示す概略図である。It is explanatory drawing of the structure of the panel used for a reinforcement earth wall, and is a figure which shows the example of (a) panel, (b) It is the schematic which shows the state in the middle of panel stacking. 鞍型基部の要部拡大図である。It is a principal part enlarged view of a bowl-shaped base. 鞍型基部のその他の例を示し、（ａ）は補強板を設けた鞍型基部の側面図であり、（ｂ）は補強板付き鞍型基部を組み立てた状態を示す図である。The other example of a wedge-shaped base is shown, (a) is a side view of the wedge-shaped base which provided the reinforcement board, (b) is a figure which shows the state which assembled the wedge-shaped base with a reinforcement plate. 本発明の安全柵の設置過程を示す説明図であり、（ａ）は取り付け概略図、（ｂ）は設置状態図、（ｃ）は平面図である。It is explanatory drawing which shows the installation process of the safety fence of this invention, (a) is an attachment schematic, (b) is an installation state figure, (c) is a top view. 安全柵を取り付けた状態を示す図であり、（ａ）は断面図、（ｂ）は平面図である。It is a figure which shows the state which attached the safety fence, (a) is sectional drawing, (b) is a top view. 補強土壁の構造を示す図。The figure which shows the structure of a reinforcement earth wall.

本発明は、板状のコンクリート製の十字型パネルを外面側に積み上げ、裏面に盛土壁して補強土壁を構築する工事に用いる工事用の安全柵である。このパネルは、１ｍ以上あって、１トン以上あり、これを急勾配で積み上げる作業であるので、落下などの危険対策を十分に行う必要がある。   The present invention is a safety fence for work used in construction in which plate-like concrete cross panels are stacked on the outer surface side and a back wall is embanked to construct a reinforced earth wall. This panel is 1 m or more, 1 t or more, and it is work to pile it up with a steep slope, so it is necessary to take sufficient measures against danger such as falling.

本発明の安全柵は、上段パネルに嵌合する鞍型基部と鞍型基部の外側面に取り付けられて支柱に設けられた防護柵を備えた防護体から構成されている。防護体は、鞍型基部の外面側に設けられているので、外側に倒れるように形成される。このため、防護柵があっても、次段のパネルの積み込みができる。そして、既設の上段パネルの上方に防護柵が形成されるので、安全に作業することができる。したがって、本発明の安全柵は、既設の上段パネル間の空間に設置された状態で次段のパネルの積み上げ作業することができる。   The safety fence of the present invention comprises a cage base fitted to the upper panel and a guard provided with a guard fence attached to the outer surface of the cage base and provided on a column. The protective body is provided on the outer surface side of the wedge-shaped base, and thus is formed to fall outward. Therefore, even if there is a guard fence, loading of the next panel can be performed. And since a guard fence is formed above the existing upper stage panel, it can operate safely. Therefore, the safety fence of the present invention can be stacked in the next stage while being installed in the space between the existing upper panels.

以下、図面を参照しながら本発明の補強土壁に設置する安全柵の実施の形態を詳細に説明する。   Hereinafter, an embodiment of a safety fence installed on a reinforced earth wall of the present invention will be described in detail with reference to the drawings.

まず、図１，２を用いて前提条件を説明する。
発明の安全柵は補強土壁工法の施工中に用いる柵である。
補強土壁工法は、図１に示すように、盛土層４の間にストリップ３と称する鋼材の帯を敷設し、その盛土層４の前面にパネル１を千鳥状に積み上げる。パネル１を積み上げた後に、ストリップ３の上にさらに盛り土を行う、これらを繰り返して補強土壁を形成するものである。
その際に使用するパネル１の形状と名称を図２（ａ）で説明する。パネル１は、前記したように補強土壁の正面から見た場合に十文字状に形成されている。
四角の中央部５の上方に上片５１、両側に側片５２を、下方に下片５３を備えている。そして一方の側片５２の上縁には鉛直方向にボルト材であるジベル５４が突出している。
また他方の側片５２の上縁には、鉛直方向にジベル５４の直径よりも多少大きい直径の穴である受穴５５が形成してある。 First, the preconditions will be described with reference to FIGS.
The safety fence of the invention is a fence used during construction of a reinforced soil wall construction method.
In the reinforced earth wall construction method, as shown in FIG. 1, a steel strip called strip 3 is laid between the embankment layers 4 and panels 1 are stacked in a zigzag on the front surface of the embankment layers 4. After the panels 1 are stacked, filling is further performed on the strip 3, which is repeated to form a reinforced earth wall.
The shape and name of the panel 1 used at that time will be described with reference to FIG. The panel 1 is formed in a cross shape when viewed from the front of the reinforced earth wall as described above.
The upper piece 51 is provided above the central portion 5 of the square, the side pieces 52 are provided on both sides, and the lower piece 53 is provided below. At the upper edge of one side piece 52, a dowel 54, which is a bolt material, protrudes in the vertical direction.
In the upper edge of the other side piece 52, a receiving hole 55 which is a hole whose diameter is slightly larger than the diameter of the dowel 54 in the vertical direction is formed.

図２（ｂ）に示すように、パネル１を千鳥状に積み上げる際は、上段パネル間には次段のパネルを組み込むための空間Ａが形成されている。上段パネル１１ａと上段パネル１１ｂの間に段差が生じる。地盤面（盛土上端）は下段パネル１２より下に位置しており、段差は開口となる。その為、段差から作業員が転落する虞があり、パネル間の段差に転落防止の安全柵２を設ける必要がある。   As shown in FIG. 2B, when stacking the panels 1 in a zigzag form, a space A is formed between the upper panels for incorporating the next panel. A step is generated between the upper panel 11a and the upper panel 11b. The ground surface (the upper end of the filling) is located below the lower panel 12, and the step is an opening. Therefore, there is a possibility that a worker may fall from the step, and it is necessary to provide the fall-preventing safety fence 2 in the step between the panels.

本発明の安全柵は、パネル間の段差から作業員が転落することを防止するため、および上段パネル上方も取付けるものであり、パネル間のパネルを設置する際には取り外す必要がなく、施工の妨げとならずに、常に安全柵が取付けられた状態で施工を続けることができる。また、上段パネルの上方の安全性も確保できる。
そのため、一時的にも安全柵を取り外すことがないため、安全に工事をすすめることができる。 The safety fence of the present invention is to prevent the worker from falling down from the step between the panels and also to mount the upper side of the upper panel, and there is no need to remove it when installing the panel between the panels. The construction can be continued with the safety fence always attached without any hindrance. In addition, the safety above the upper panel can be secured.
Therefore, since the safety fence is not removed temporarily, construction can be carried out safely.

図３は、鞍型基部の要部拡大図である。
図４は、鞍型基部のその他の例を示し、（ａ）は補強板を設けた鞍型基部の側面図であり、（ｂ）は補強板付き鞍型基部を組み立てた状態を示す図である。
図５は、本発明の安全柵の設置過程を示す説明図であり、（ａ）は取り付け概略図、（ｂ）は設置状態図、（ｃ）は平面図である。 FIG. 3 is an enlarged view of the main part of the bowl-shaped base.
4A and 4B show other examples of the wedge-shaped base, where FIG. 4A is a side view of the wedge-shaped base provided with a reinforcing plate, and FIG. 4B is a view showing the wedge-shaped base with the reinforcing plate assembled. is there.
FIG. 5 is an explanatory view showing the installation process of the safety fence of the present invention, wherein (a) is a schematic view of installation, (b) is an installation state, and (c) is a plan view.

図５に示すように、安全柵２は、鞍型基部２１と防護体２３を備えている。鞍型基部２１は、パネルの上片を跨いでパネルに装着される構造である。
そして、図３に示すように、鞍型基部２１は、上板２１ｂの一方端からパネルの外面側に添う外側板２１ａと他方端からパネルの内面側に添う内側板２１ｃを備えており、外側板の下方には緩衝材２４が設けられている。そして、外側板２１ａの外面には支柱取付部２１ｄが設けられている。支柱の取り付けは、鞍型基部に固定接合あるいは差し込みなど取り外し可能にする。
上板、外側板、内側板は、よじれなどの十分に耐えられる幅と厚みを持っている。
また、上板はパネルの厚さと同程度か、若干長い幅である。
したがって、安全柵２は一対の鞍型基部２１と鞍型基部２１の側面に取付けられた支柱２２、支柱２２を連結するように取付けられた防護体２３によって構成されており、鞍型基部２１は上段パネル11の端部を挟むように取り付ける。 As shown in FIG. 5, the safety fence 2 includes a hook-shaped base 21 and a protective body 23. The wedge-shaped base 21 is structured to be mounted on the panel across the upper piece of the panel.
And as shown in FIG. 3, the wedge-shaped base 21 is equipped with the outer side plate 21a which follows the outer surface side of a panel from one end of the upper plate 21b, and the inner side plate 21c which follows the inner surface side of a panel from the other end. A buffer 24 is provided below the plate. And the support | pillar attaching part 21d is provided in the outer surface of the outer side board 21a. To attach the columns, make them removable by means of fixed connection or insertion in the wedge base.
The upper plate, the outer plate, and the inner plate have sufficient width and thickness such as kinks.
In addition, the upper plate is as wide as or slightly longer than the thickness of the panel.
Therefore, the safety fence 2 is constituted by a pair of hook-shaped base portions 21, a support 22 attached to the side surface of the hook-shaped base 21, and a protective body 23 attached to connect the supports 22. Attach the end of the upper panel 11 so as to sandwich it.

安全柵は、面外に設けられた支柱の体重によって、積み上げられたパネルの外側に自然と傾くように設定されているので、特に、外側に傾くように強制する必要は無いが、鞍型基部はパネル上端幅よりも長いので、隙間があって、作業員が掴まるなどした場合、振れて不安定になることがある。
そこで、図４（ａ）に示すように外側板の内面上端にスペーサ２５を設けておくと、防護体が面外に確実に傾斜し、内側に倒れ込むことを防止することができる。 Since the safety fence is set to tilt naturally to the outside of the stacked panels by the weight of the column provided out of the plane, it is not necessary to force the tilting especially to the outside, but the wedge-shaped base Is longer than the upper end width of the panel, there is a gap, and if the operator grasps it, it may shake and become unstable.
Therefore, as shown in FIG. 4A, if the spacer 25 is provided at the upper end of the inner surface of the outer side plate, the protective body can be surely prevented from being inclined out of the plane and can be prevented from falling inside.

また、鞍型基部の外側板と内側板は、下端部がフリーの支点となり、上板との接合部に応力が集中するので、図４（ａ）に示すように、アングル状の補強板２６を設けて、損傷抑制を図ることができる。この場合、パネルに接しない外面側に設けることとなり、上板は、補強板に設置分広くする。
なお、鞍型基部は、図４（ａ）では、板材で示しているが、パイプや棒材などの線材を組み合わせてコ字型に形成することもできる。また、線材で設けた場合、外側板は支柱を兼用することができる。すなわち「ｈ」形となる。 Further, since the lower end portion of the outer and inner plates of the bowl-shaped base serves as a fulcrum for free movement and stress is concentrated at the joint portion with the upper plate, as shown in FIG. To prevent damage. In this case, the upper plate is provided on the outer surface side not in contact with the panel, and the upper plate is wider than the reinforcing plate.
In addition, although the wedge-shaped base is shown with the board | plate material in Fig.4 (a), it can also form in square shape combining wire materials, such as a pipe and a bar material. Moreover, when providing with a wire, an outer side board can be used as a support | pillar. That is, it becomes "h" form.

また、図４（ｂ）に示すように、Ｌ字部材を対向するように配置して外側板および内側板とし、上方から平板をビスで固定して上板とすることで鞍型基部を形成することもできる。   Also, as shown in FIG. 4 (b), the L-shaped members are disposed to face each other to form an outer side plate and an inner side plate, and a flat plate is fixed from above with screws to form an upper plate to form a bowl-shaped base. You can also

図５（ａ）に示すように、防護体２３は、複数設けられた支柱２２と支柱間に渡された杆状体で形成されている。防護柵の数、設置位置は任意である。上段パネル１１ａ、１１ｂの間の間に存在する段差空間から作業員の転落防止できる位置に設けられる。特に、次段のパネルを積み上げる作業時に安全性が確保できる位置に設けることが好ましい。   As shown to Fig.5 (a), the protection body 23 is formed by the rod-shaped body passed between several support | pillars 22 and support | pillars provided. The number of guard fences and the installation position are arbitrary. It is provided in the position which can prevent a worker's fall from the level | step difference space which exists between upper stage panels 11a and 11b. In particular, it is preferable to provide at a position where safety can be secured at the time of the work of stacking the next panel.

防護体２３は、図３に図示の例では、下段は鞍型基部の位置に設けられた防護柵２３ｃであり、上段は、上段パネル１１ａ、１１ｂよりも高い位置に配置された防護体２３ａであり、その中間に防護体２３ｂである、３本で構成されている。
図５（ａ）では、下段パネル１２に２つの上段パネル１１（１１ａ、１１ｂ）が空間Ａを隔てて配置されている状態となっている。この空間Ａに次段のパネルを積み上げる作業が行われる。作業員は、盛土の上あるいは既設のパネルの上で作業を行うこととなる。
図５（ｂ）（ｃ）に示すように、本発明の防護柵の設置後は、作業空間となる空間Ａと上方空間をカバーしており安全性が高い。また、防護柵は、上段パネルの上端に設けられるので、空間Ａよりも広い幅に設けられ、次段パネルの積み上げ作業を横方向からアクセスするときにもカバーすることができる。 In the example shown in FIG. 3, the lower part of the protective body 23 is the protective fence 23c provided at the position of the bowl-shaped base, and the upper part is the protective body 23a disposed at a higher position than the upper panels 11a and 11b. In the middle, there are three protection bodies 23b.
In FIG. 5A, two upper panels 11 (11a and 11b) are arranged on the lower panel 12 with a space A therebetween. The work of stacking the next panel in this space A is performed. Workers will work on the embankment or on the existing panels.
As shown in FIGS. 5 (b) and 5 (c), after the installation of the protection fence of the present invention, the space A and the upper space serving as the working space are covered, and the safety is high. In addition, since the guard fence is provided at the upper end of the upper panel, it is provided wider than the space A, and can also cover the stacking operation of the next panel when accessing from the lateral direction.

図６は本発明の安全柵２を取付けた状態での断面図である。鞍型基部２１の下端の内側のパネル１と当接する箇所には、緩衝材２４を設置する。
鞍型基部２１の端部は安全柵２を設置した際に、パネル１の正面に当接する。緩衝材を設けなかった場合、安全柵２を設置する際にパネル１をの欠けや擦れ痕を防止することができる。また、安全柵２を鋼材で製作した際に、パネル１に錆汁などやが付着し汚れることを防止することができる。
緩衝材２４の材質は、スポンジ、ゴム、ウレタンフォーム等をクッション性の高いものを使用するのがよい。
また、安全柵２の設置時の妨げとならないように、緩衝材24にテーパーを設けるのが良い。
なお、最下端の防護柵２３ｃを介して緩衝材２４を取り付けることもできる。あるいは、緩衝材２４を防護柵２３ｃの上下に配置する、あるいは、防護柵２３ｃを外面側に取り付けることもできる。 FIG. 6 is a cross-sectional view of the safety fence 2 of the present invention in a mounted state. A shock absorbing material 24 is installed at a position in contact with the inner panel 1 at the lower end of the bowl-shaped base 21.
When the safety fence 2 is installed, the end of the wedge-shaped base 21 abuts on the front of the panel 1. When the buffer material is not provided, it is possible to prevent chipping or rubbing marks on the panel 1 when installing the safety fence 2. In addition, when the safety fence 2 is made of steel, rust and the like can be prevented from adhering to the panel 1 and becoming dirty.
As a material of the shock absorbing material 24, it is preferable to use a sponge, rubber, urethane foam or the like having high cushioning properties.
In addition, it is preferable that the cushioning material 24 be tapered so as not to hinder the installation of the safety fence 2.
In addition, the shock absorbing material 24 can also be attached via the guard fence 23c of the lowest end. Alternatively, the cushioning material 24 can be disposed above and below the guard fence 23c, or the guard fence 23c can be attached to the outer surface side.

上記の構成のとおり、本発明の安全柵２は、支柱２２が鞍型基部２１の外側面に取付けら、防護体２３が支柱２２を連結するように取付けられているので、支柱２２および防護体２３はパネル１の面外に位置する。そのため、上段パネル１１ａと上段パネル１１ｂの間の次段のパネル１を設置する際に安全柵２が干渉することがなく設置できる。支柱２２、防護体２３が外側面の位置するように安全柵２が設置されるとで、パネル設置作業に支障がない。ここに「外側面」とは、盛土側でない面のことである。
安全柵２が常に段差に設置されているので、開口部がない状態で隔パネルの間のパネル設置作業が行えるので、安全性が向上する。
鞍型基部と防護柵が一体型の安全柵の場合は、パネル設置に使用するクレーンなどの機材を使用して、次の場所へ盛り変え作業を行う。鞍型基部と防護柵を別体する、あるいは防護体も支柱と防護柵も別体とするなどの組み立て形の場合は、部品毎に移動して組み立てることができる。
パネル間の設置作業を終えたら、安全柵２を吊り上げて取外し、一つ上段のパネル間に設置してから、盛土を行う。安全柵２の設置、パネル１の設置、安全柵２の盛替え、盛土を繰り返すことで、パネル１は欠けや汚れもなく、補強土壁工法を常に安全な状態で施工することができる。 As described above, since the safety fence 2 of the present invention is mounted so that the support 22 is attached to the outer surface of the wedge-shaped base 21 and the guard 23 connects the support 22, the support 22 and the guard are attached. 23 is located out of the plane of the panel 1. Therefore, when installing the panel 1 of the next step between the upper panel 11a and the upper panel 11b, the safety fence 2 can be installed without interference. By installing the safety fence 2 so that the support 22 and the protective body 23 are positioned on the outer side, there is no hindrance to the panel installation work. Here, the "outside surface" is a surface that is not the embankment side.
Since the safety fence 2 is always installed at the step, the panel installation work between the separate panels can be performed without the opening, so the safety is improved.
In the case of a safety fence where the vertical base and the guard fence are integrated, the equipment will be raised to the next place using equipment such as a crane used for panel installation. In the case of an assembly type in which the cage base and the guard fence are separated, or the guard body and the support pillar and guard fence are also separated, the parts can be moved and assembled one by one.
When the installation work between the panels is completed, the safety fence 2 is lifted and removed, installed between the upper panels, and embankment is performed. By repeating the installation of the safety fence 2, the installation of the panel 1, the replacement of the safety fence 2, and the filling of the soil, the panel 1 can be constructed with the reinforced earth wall construction method always in a safe state without chipping or dirt.

１：パネル
１１、１１ａ、１１ｂ：上段パネル
１２：下段パネル
２：安全柵
２１：鞍型基部
２１ａ：外側板
２１ｂ：上板
２１ｃ：内側板
２１ｄ：支柱取付部
２２：支柱
２３、２３ａ、２３ｂ、２３ｃ：防護体
２４：緩衝材
２５：スペーサ
３：ストリップ
４：盛土
５：中央部
５１：上片
５２：側片
５３：下片
５４：ジベル
５５：受穴
１０：補強土壁
ｘ：上段のパネル
ｙ：下段のパネル
ｚ：段差 1: panel 11, 11a, 11b: upper panel 12: lower panel 2: safety fence 21: vertical base 21a: outer plate 21b: upper plate 21c: inner plate 21d: column mounting portion 22: column 23, 23a, 23b, 23c: Protective body 24: Shock absorbing material 25: Spacer 3: Strip 4: Embankment 5: Central part 51: Upper piece 52: Side piece 53: Lower piece 54: Lower 55: Reception hole 10: Reinforcing earth wall x: Upper panel y: lower panel z: level difference

Claims (4)

盛土層の外側に、高さ方向に段差を設けてパネルを積み上げる補強土壁において、上段パネルであって水平方向に隔てられて隣接する隔パネル間に形成される開口部に設置する、工事用安全柵であって、
隔パネルの上片に取付けられた鞍型基部と、鞍型基部側面に設置した支柱と、支柱に取付けられた防護体からなり、
防護体は隔パネルの外面側の面外に配置されることを特徴とする、安全柵。 A reinforced soil wall in which steps are provided in the height direction on the outer side of the embankment layer to pile up panels, which is an upper panel and installed in an opening formed between horizontally adjacent separated panels which are horizontally separated It is a safety fence,
It consists of a bowl-shaped base attached to the top piece of the panel, a column installed on the side of the column-shaped base, and a guard attached to the column,
A safety fence characterized in that the protective body is disposed outside the outer surface of the partition panel. 鞍型基部は、パネル外面側の外側板とパネル上片側に配置された上板とパネル内面側の内側片から形成され、外側板の下端に緩衝材が設けられていることを特徴とする請求項１記載の安全柵。   The wedge-shaped base is formed of an outer plate on the outer surface side of the panel, an upper plate disposed on one side on the panel, and an inner piece disposed on the inner surface of the panel, and a shock absorbing material is provided at the lower end of the outer plate. The safety fence according to Item 1. 防護柵の支柱は鞍型基部から上方に向けて設置されていることを特徴とする請求項１又は２記載の安全柵。   The safety fence according to claim 1 or 2, wherein the support fence of the protection fence is installed upward from the bowl-shaped base. 防護体が開口部に設けられていることを特徴する請求項１〜３のいずれかに記載の安全柵。   The safety fence according to any one of claims 1 to 3, wherein a protective body is provided at the opening.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1068232A (en) * 1996-08-29 1998-03-10 Sekisui House Ltd Temporary enclosure stanchion support metal
JP2005188170A (en) * 2003-12-26 2005-07-14 Fukuda Corp Safety fence
JP3180891U (en) * 2012-10-29 2013-01-17 五洋建設株式会社 Simple protective fence
US20140263904A1 (en) * 2013-03-14 2014-09-18 Heritage Research Group Mse wall guardrail system
JP2017025594A (en) * 2015-07-23 2017-02-02 株式会社 功創 Column fixture

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1068232A (en) * 1996-08-29 1998-03-10 Sekisui House Ltd Temporary enclosure stanchion support metal
JP2005188170A (en) * 2003-12-26 2005-07-14 Fukuda Corp Safety fence
JP3180891U (en) * 2012-10-29 2013-01-17 五洋建設株式会社 Simple protective fence
US20140263904A1 (en) * 2013-03-14 2014-09-18 Heritage Research Group Mse wall guardrail system
JP2017025594A (en) * 2015-07-23 2017-02-02 株式会社 功創 Column fixture

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