JP2011226165A - Banking reinforcing structure and mounting metal fitting used therefor - Google Patents

Banking reinforcing structure and mounting metal fitting used therefor Download PDF

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JP2011226165A
JP2011226165A JP2010097338A JP2010097338A JP2011226165A JP 2011226165 A JP2011226165 A JP 2011226165A JP 2010097338 A JP2010097338 A JP 2010097338A JP 2010097338 A JP2010097338 A JP 2010097338A JP 2011226165 A JP2011226165 A JP 2011226165A
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embankment
sheet material
metal fitting
wall
wall plate
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JP5268163B2 (en
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Hiroyuki Nakanishi
裕之 中西
Toshiaki Kawai
俊章 川合
Kaname Kimura
要 木村
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KIMURA SEKKEI CO Ltd
KUKI E&T CO Ltd
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KIMURA SEKKEI CO Ltd
KUKI E&T CO Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a banking reinforcing structure preventing the deformation of a banking slope surface.SOLUTION: A banking reinforcing structure 1 comprises a retaining wall 2 formed by a plurality of wallboards 5 raised in surface shapes, sheet materials 6, and a mounting metal fitting 7 coupling the adjacent wallboards 5 with each other and fixing the sheet materials 6 to the back surfaces of the wallboards 5. The sheet materials 6 are embedded in a banking 3, and fixed to a lower end and an upper end on the back surfaces of the wallboards 5 at the intermediate pats thereof and folded back, thereby dividing the banking 3 into layers 8. Consequently, the retaining wall 2 is formed on a slope surface 11 of the banking 3, and the retaining wall 2 is integrated with the banking 3.

Description

本発明は、道路などの盛土を補強する盛土の補強構造、及びそれに用いられる取付金具に関する。   The present invention relates to an embankment reinforcing structure that reinforces an embankment such as a road, and an attachment fitting used therefor.

従来から、シート材を用いて盛土の補強を図った盛土の補強構造が知られている（例えば、特許文献１参照）。このような盛土の補強構造を図９乃至図１１を参照して説明する。図９に示されるように、盛土の補強構造１００において、盛土３及び砕石４１内にシート材１０６が埋設され、シート材１０６の中間部が法面１１１を覆っている。盛土３及び砕石４１は、シート材１０６で区分され、層１０８を形成する。各層１０８の盛土３及び砕石４１は、法面１１１側がシート材１０６で包まれることによって補強される。盛土３及び砕石４１から成る層１０８は、複数層重ねられて盛土の補強構造１００を構成する。   Conventionally, a reinforcement structure for embankment in which embankment is reinforced using a sheet material is known (for example, see Patent Document 1). Such a reinforcing structure for embankment will be described with reference to FIGS. As shown in FIG. 9, in the embankment reinforcing structure 100, the sheet material 106 is embedded in the embankment 3 and the crushed stone 41, and an intermediate portion of the sheet material 106 covers the slope 111. The embankment 3 and the crushed stone 41 are divided by a sheet material 106 to form a layer 108. The embankment 3 and the crushed stone 41 of each layer 108 are reinforced by wrapping the slope 111 side with the sheet material 106. A plurality of layers 108 composed of the embankment 3 and the crushed stone 41 are stacked to constitute the embankment reinforcement structure 100.

しかしながら、図１０に示されるように、この盛土の補強構造１００においては、法面１１１を覆っているシート材１０６が、盛土３の土圧を砕石４１を介して受けて張り出し、法面１１１に変形が生じることがある。また、図１１に示されるように、砕石４１がシート材１０６内で法面１１１側に滑り落ち、法面１１１に変形が生じることがある。   However, as shown in FIG. 10, in the embankment reinforcing structure 100, the sheet material 106 covering the slope 111 receives the earth pressure of the embankment 3 through the crushed stone 41 and extends to the slope 111. Deformation may occur. Further, as shown in FIG. 11, the crushed stone 41 may slide down to the slope 111 side in the sheet material 106 and the slope 111 may be deformed.

特開２００９−１８５５１６号公報JP 2009-185516 A

本発明は、上記問題を解決するものであり、盛土の法面の変形を防ぐ補強構造及びそれに用いられる取付金具を提供することを目的とする。   This invention solves the said problem, and aims at providing the reinforcement structure which prevents the deformation | transformation of the slope of embankment, and the attachment metal fitting used therefor.

上記目的を達成するために請求項１の発明は、面状に立設された複数の壁板により形成した擁壁を用いて、この擁壁の背面側に設けられる盛土を補強する構造であって、シート材と、前記壁板の隣り合うもの同士を連結すると共に、前記シート材を前記壁板の背面に固定する取付金具と、を備え、前記シート材は、前記盛土内に埋設され、該シート材の中間部が前記壁板背面の下端及び上端に固定されて折り返され、盛土を層として区分するものである。   In order to achieve the above object, the invention of claim 1 is a structure in which a bank wall formed by a plurality of wall plates standing upright is used to reinforce the embankment provided on the back side of the wall. The sheet material and the wall plate adjacent to each other, and a mounting bracket for fixing the sheet material to the back surface of the wall plate, the sheet material is embedded in the embankment, An intermediate portion of the sheet material is fixed to the lower end and the upper end of the back surface of the wall plate and folded, and the embankment is divided into layers.

請求項２の発明は、請求項１に記載の盛土の補強構造において、前記擁壁の背面に固定された前記シート材と盛土との間に、盛土から該擁壁に加わる土圧を低減すると共に、盛土内の水を排水して盛土の形成を保存する形成保存層を有するものである。   According to a second aspect of the present invention, in the reinforcing structure for embankment according to the first aspect, the earth pressure applied from the embankment to the retaining wall is reduced between the sheet material fixed to the back surface of the retaining wall and the embankment. At the same time, it has a formation preservation layer that drains the water in the embankment and preserves the formation of the embankment.

請求項３の発明は、請求項１又は請求項２に記載の盛土の補強構造に用いられる取付金具であって、前記壁板の背面上端に取り付けられる上段金具と、前記壁板の背面下端に取り付られる下段金具と、を有し、前記上段金具及び下段金具は、それぞれ前記壁板の背面に前記シート材を挟んで取り付られ、横方向に隣り合う前記壁板を連結し、前記上段金具及び下段金具が互いに結合されることによって上下に隣り合う前記壁板を連結するものである。   Invention of Claim 3 is a mounting bracket used for the embankment reinforcement structure of Claim 1 or Claim 2, Comprising: The upper stage metal fitting attached to the back upper end of the said wall board, and the back lower end of the said wall board A lower bracket that is attached, and the upper bracket and the lower bracket are attached to the back surface of the wall plate with the sheet material interposed therebetween, and connect the wall plates adjacent in the lateral direction, By connecting the metal fitting and the lower metal fitting to each other, the wall plates adjacent in the vertical direction are connected.

請求項４の発明は、請求項３に記載の取付金具において、前記シート材は、網状であり、前記上段金具は、前記シート材の網目と係合する突起を有するものである。   According to a fourth aspect of the present invention, in the mounting bracket according to the third aspect, the sheet material has a mesh shape, and the upper metal fitting has a protrusion that engages with the mesh of the sheet material.

請求項１の発明によれば、盛土の法面に擁壁が形成されるので、法面の変形を防止することができる。擁壁は、その背面に固定したシート材が盛土の荷重によって挟まれるので、盛土と一体化され、擁壁の転倒及び滑動が防止される。また、盛土がシート材によって層として区分されるので、盛土の滑り面がシート材によって遮断されることになり、盛土の滑り崩落が防止される。   According to the first aspect of the present invention, since the retaining wall is formed on the slope of the embankment, deformation of the slope can be prevented. Since the sheet material fixed to the back surface of the retaining wall is sandwiched by the load of the embankment, the retaining wall is integrated with the embankment, and the retaining wall is prevented from falling and sliding. Moreover, since the embankment is divided into layers by the sheet material, the sliding surface of the embankment is blocked by the sheet material, and slippage of the embankment is prevented.

請求項２の発明によれば、形成保存層４が土圧低減機能と排水機能を有するので、盛土の補強構造１の強度が向上する。   According to invention of Claim 2, since the formation preservation | save layer 4 has an earth pressure reduction function and a drainage function, the intensity | strength of the reinforcement structure 1 of embankment improves.

請求項３の発明によれば、取付金具を用いて複数の壁板を連結し、擁壁を構成するので、一体構造の擁壁を形成するよりも、盛土の補強構造の施工が容易となる。また、取付金具は、シート材を壁板に固定する機能と、壁板同士を連結する機能とを兼有するので、施工に必要な金具の種類を少なくすることができる。   According to the invention of claim 3, since the plurality of wall plates are connected using the mounting bracket to constitute the retaining wall, the construction of the embankment reinforcement structure becomes easier than the formation of the integral retaining wall. . Moreover, since the mounting bracket has both a function of fixing the sheet material to the wall plate and a function of connecting the wall plates to each other, it is possible to reduce the types of brackets necessary for construction.

請求項４の発明によれば、シート材において、盛土の土圧によって受ける張力が、上段金具の突起によって分散されるので、張力による損傷が防がれる。   According to the invention of claim 4, in the sheet material, since the tension received by the earth pressure of the embankment is dispersed by the protrusions of the upper metal fitting, damage due to the tension can be prevented.

本発明の一実施形態に係る盛土の補強構造の断面図。Sectional drawing of the reinforcement structure of the embankment which concerns on one Embodiment of this invention. 同構造における擁壁の背面図。The rear view of the retaining wall in the structure. （ａ）は同擁壁に用いられる取付金具における上段金具の平面図、（ｂ）は同金具の側面図、（ｃ）は同金具の正面図。(A) is a top view of the upper metal fitting in the attachment metal used for the retaining wall, (b) is a side view of the metal fitting, and (c) is a front view of the metal fitting. （ａ）は同擁壁に用いられる取付金具における下段金具の平面図、（ｂ）は同金具の側面図、（ｃ）は同金具の正面図。(A) is a top view of the lower metal fitting in the attachment metal used for the retaining wall, (b) is a side view of the metal fitting, and (c) is a front view of the metal fitting. 上記構造におけるシート材及び上段金具の平面図。The top view of the sheet | seat material in the said structure and an upper stage metal fitting. （ａ）（ｂ）（ｃ）は上記盛土の補強構造の施工を順に示す施工手順図。(A) (b) (c) is a construction procedure figure which shows construction of the reinforcement structure of the said embankment in order. （ａ）（ｂ）は図６（ｃ）に続く施工を順に示す施工手順図。(A) (b) is a construction procedure figure which shows the construction following FIG.6 (c) in order. （ａ）（ｂ）は図７（ｂ）に続く施工を順に示す施工手順図。(A) (b) is a construction procedure figure which shows the construction following FIG.7 (b) in order. 従来の盛土の補強構造の断面図。Sectional drawing of the reinforcement structure of the conventional embankment. 同構造における法面の変形を示す断面図。Sectional drawing which shows the deformation | transformation of the slope in the structure. 同構造における法面の別の変形を示す断面図。Sectional drawing which shows another deformation | transformation of the slope in the structure.

本発明の一実施形態に係る盛土の補強構造を図１及び図２を参照して説明する。盛土の補強構造１は、擁壁２を用いて、この擁壁２の背面側に設けられる盛土３を補強する構造である。擁壁２は、面状に立設された複数の壁板５を用いて形成される。盛土の補強構造１は、複数のシート材６と、複数の取付金具７とを備える。取付金具７は、複数の壁板５の隣り合うもの同士を連結すると共に、各々のシート材６を各々の壁板５の背面に固定する。シート材６は、壁板５の背面側に設けられた盛土３内に埋設され、シート材６の中間部が壁板５背面の下端及び上端に固定されて折り返され、盛土３を層８として区分する。盛土の補強構造１は、シート材６材によって区分された層８を複数層有する。また、盛土の補強構造１は、擁壁２の背面に固定されたシート材６と盛土３との間に、形成保存層４を有する。形成保存層４は、砕石４１を有する層であり、盛土３から擁壁２に加わる土圧を低減すると共に、盛土３内の水を排水して盛土３の形成を保存する。ここで、擁壁２又は壁板５の背面は、擁壁２又は壁板５の盛土３に臨む側の面である。なお、図２において、盛土３、形成保存層４、シート材６は図示を省略している。   An embankment reinforcement structure according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. The embankment reinforcing structure 1 is a structure in which a retaining wall 2 is used to reinforce the embankment 3 provided on the back side of the retaining wall 2. The retaining wall 2 is formed using a plurality of wall plates 5 erected in a planar shape. The embankment reinforcement structure 1 includes a plurality of sheet materials 6 and a plurality of mounting brackets 7. The mounting bracket 7 connects adjacent ones of the plurality of wall plates 5, and fixes each sheet material 6 to the back surface of each wall plate 5. The sheet material 6 is embedded in the embankment 3 provided on the back side of the wall plate 5, the middle part of the sheet material 6 is fixed to the lower end and the upper end of the back surface of the wall plate 5, and is folded back. Break down. The embankment reinforcing structure 1 has a plurality of layers 8 separated by six sheet members. Further, the embankment reinforcement structure 1 includes a formation preservation layer 4 between the sheet material 6 fixed to the back surface of the retaining wall 2 and the embankment 3. The formation preservation layer 4 is a layer having the crushed stone 41 and reduces the earth pressure applied to the retaining wall 2 from the embankment 3 and drains the water in the embankment 3 to preserve the formation of the embankment 3. Here, the back surface of the retaining wall 2 or the wall plate 5 is a surface on the side facing the embankment 3 of the retaining wall 2 or the wall plate 5. In addition, in FIG. 2, the embankment 3, the formation preservation layer 4, and the sheet | seat material 6 are abbreviate | omitting illustration.

取付金具７は、壁板５の背面上端に取り付けられる上段金具７ａと、壁板５の背面下端に取り付られる下段金具７ｂとを有する。上段金具７ａ及び下段金具７ｂは、それぞれ壁板５の背面にシート材６を挟んで取り付られ、横方向に隣り合う壁板５を連結する。取付金具７は、上段金具７ａ及び下段金具７ｂが互いに結合されることによって上下に隣り合う壁板５を連結する。   The mounting bracket 7 includes an upper metal fitting 7 a that is attached to the upper rear end of the wall plate 5 and a lower metal fitting 7 b that is attached to the lower lower end of the wall plate 5. The upper metal fitting 7a and the lower metal fitting 7b are attached to the back surface of the wall plate 5 with the sheet material 6 interposed therebetween, and connect the wall plates 5 adjacent in the horizontal direction. The mounting bracket 7 connects the upper and lower adjacent wall plates 5 by connecting the upper bracket 7a and the lower bracket 7b to each other.

盛土の補強構造１は、地盤９上に構築され、法面１１に擁壁２が形成される。盛土３における擁壁２の反対側（図１の右側）には、地山又は別の擁壁等がある（図示せず）。形成保存層４の砕石４１は、一般の土よりも崩壊角が大きいので摩擦抵抗が大きい。このため、形成保存層４は、擁壁２に加わる土圧を低減する。また、形成保存層４は、盛土３内に浸透した水を排水するための透水層として機能する。盛土３内の水は、形成保存層４を透過し、壁板５間の隙間から盛土の補強構造１の外部に排水される。排水を促進するため、壁板５に水抜き孔を設けることが望ましい。   The embankment reinforcement structure 1 is constructed on the ground 9 and the retaining wall 2 is formed on the slope 11. On the opposite side of the retaining wall 2 in the embankment 3 (the right side in FIG. 1), there is a natural mountain or another retaining wall (not shown). Since the crushed stone 41 of the formation preservation layer 4 has a larger decay angle than general soil, the frictional resistance is large. For this reason, the formation preservation layer 4 reduces the earth pressure applied to the retaining wall 2. Moreover, the formation preservation layer 4 functions as a water permeable layer for draining the water that has permeated into the embankment 3. The water in the embankment 3 passes through the formation preservation layer 4 and is drained from the gaps between the wall plates 5 to the outside of the embankment reinforcement structure 1. In order to promote drainage, it is desirable to provide a drain hole in the wall plate 5.

壁板５は、板状の構造部材であり、例えばＰＣ板（プレキャストコンクリート板）である。ＰＣ板は、工場で製造される矩形のコンクリート板である。壁板５の寸法は、現場の作業員が一人で持つことができる大きさ及び重量（３０ｋｇ以下）にするため、例えば約５０ｃｍ角で厚さ３〜４ｃｍ程度とすることが望ましい。壁板５の背面コーナー部には、取付金具７をボルトで取り付けるための袋ナット５１が製造時に埋め込まれる。袋ナット５１は、壁板５内からの抜け落ちを防止するフランジを有し、耐食性を持たせるために溶融亜鉛めっきが施される。なお、図１及び図２では、壁板５を横方向に４枚、上下方向に２枚立設したものを示しているが、擁壁２を構成する壁板５の数は、これに限定されるものではない。   The wall board 5 is a plate-shaped structural member, for example, a PC board (precast concrete board). The PC board is a rectangular concrete board manufactured in a factory. The size of the wall plate 5 is desirably about 50 cm square and about 3 to 4 cm thick, for example, in order to make the size and weight (30 kg or less) that an on-site worker can have alone. A cap nut 51 for attaching the mounting bracket 7 with a bolt is embedded in the rear corner portion of the wall plate 5 at the time of manufacture. The cap nut 51 has a flange that prevents the cap nut 51 from falling out of the wall plate 5 and is hot dip galvanized to provide corrosion resistance. 1 and 2 show four wall plates 5 erected in the horizontal direction and two in the vertical direction, the number of wall plates 5 constituting the retaining wall 2 is limited to this. Is not to be done.

シート材６は、透水性、可撓性及び非伸縮性を有するシート状の材料であり、本実施形態では合成樹脂製の網状シートである。シート材６は、展開した状態で矩形であり、例えば、幅が壁板５の横幅の４倍に相当する約２ｍ（０．５ｍ×４）とされ、長さが盛土の補強構造１に応じて定められる。シート材６は、その両端部が壁板５背面から遠ざかる方向に延びるように盛土３内に埋設され、中間部が壁板５の背面に接するように固定される。シート材６の一端は、ピン６１又はアンカーによって盛土３に留められる。シート材６は、盛土３を層８として区分し、砕石４１を包み込む。各層８は、シート材６によって包まれ、法面１１側が壁板５によって保持される。   The sheet material 6 is a sheet-like material having water permeability, flexibility, and non-stretchability, and is a net-like sheet made of synthetic resin in the present embodiment. The sheet material 6 is rectangular in the unfolded state. For example, the width is about 2 m (0.5 m × 4) corresponding to four times the lateral width of the wall plate 5, and the length is in accordance with the reinforcing structure 1 with embankment. Determined. The sheet material 6 is embedded in the embankment 3 so that both end portions thereof extend in a direction away from the back surface of the wall plate 5, and the intermediate portion is fixed so as to contact the back surface of the wall plate 5. One end of the sheet material 6 is fastened to the embankment 3 by a pin 61 or an anchor. The sheet material 6 divides the embankment 3 as a layer 8 and wraps the crushed stone 41. Each layer 8 is wrapped by the sheet material 6, and the slope 11 side is held by the wall plate 5.

上記のように構築された盛土の補強構造１は、盛土３の法面１１に擁壁２が形成されるので、法面１１の変形を防止することができる。擁壁２は、その背面に固定したシート材６が盛土３の荷重によって挟まれるので、盛土３と一体化され、擁壁２の転倒及び滑動が防止される。また、盛土３がシート材６によって層８として区分されるので、盛土３の滑り面がシート材６によって遮断されることになり、盛土３の滑り崩落が防止される。盛土３の層８を複数層積み重ねることにより、所望の高さの盛土の補強構造１を構築することができる。   In the embankment reinforcing structure 1 constructed as described above, the retaining wall 2 is formed on the slope 11 of the bank 3, so that deformation of the slope 11 can be prevented. Since the sheet material 6 fixed to the back surface of the retaining wall 2 is sandwiched by the load of the embankment 3, the retaining wall 2 is integrated with the embankment 3, and the retaining wall 2 is prevented from falling and sliding. Moreover, since the embankment 3 is divided as the layer 8 by the sheet material 6, the sliding surface of the embankment 3 will be interrupted | blocked by the sheet material 6, and the slip collapse of the embankment 3 will be prevented. By stacking a plurality of layers 8 of the embankment 3, the embankment reinforcement structure 1 having a desired height can be constructed.

また、形成保存層４は、シート材６によって包まれ、シート材６を介して擁壁２によって法面１１側が保持されるので、法面１１の形状が保たれる。形成保存層４が土圧低減機能と排水機能を有するので、盛土の補強構造１の強度が向上する。   Moreover, since the formation preservation layer 4 is wrapped by the sheet material 6 and the slope 11 side is held by the retaining wall 2 through the sheet material 6, the shape of the slope 11 is maintained. Since the formation preservation layer 4 has an earth pressure reduction function and a drainage function, the strength of the embankment reinforcement structure 1 is improved.

擁壁２に用いられる取付金具７について説明する。取付金具７は、成形した鋼材であり、耐食性を持たせるために例えば溶融亜鉛めっきが施される。図３（ａ）（ｂ）（ｃ）及び図４（ａ）（ｂ）（ｃ）に示されるように、取付金具７の上段金具７ａ及び下段金具７ｂは、断面がＬ字形状の長尺状の金具、すなわちＬ型アングル金具であり、互いに上下逆向きに配置される。上段金具７ａは、側面視で逆Ｌ字形であり、天板７１ａ及び側板７２ａを有する。天板７１ａは、複数のボルト孔７３ａ及び突起７５を有する。突起７５は、天板７１ａを切り起こして形成される。側板７２ａは、複数のボルト孔７４ａを有する。上段金具７ａの長さは、壁板５の横幅の２倍に相当する約１ｍとされる。下段金具７ｂは、側面視でＬ字形であり、底板７１ｂ及び側板７２ｂを有する。底板７１ｂは、複数のボルト孔７３ｂ及び突起７５と嵌合する孔７６を有する。側板７２ｂは、複数のボルト孔７４ｂを有する。下段金具７ｂの長さは、上段金具７ａの長さと同じである。   The mounting bracket 7 used for the retaining wall 2 will be described. The mounting bracket 7 is a molded steel material, and is subjected to, for example, hot dip galvanizing to give corrosion resistance. As shown in FIGS. 3 (a), (b), (c) and FIGS. 4 (a), (b), and (c), the upper metal fitting 7a and the lower metal fitting 7b of the attachment metal 7 are long and have an L-shaped cross section. Shaped metal fittings, that is, L-shaped angle fittings, which are arranged upside down. The upper metal fitting 7a has an inverted L shape in a side view and includes a top plate 71a and a side plate 72a. The top plate 71 a has a plurality of bolt holes 73 a and protrusions 75. The protrusion 75 is formed by cutting and raising the top plate 71a. The side plate 72a has a plurality of bolt holes 74a. The length of the upper metal fitting 7a is about 1 m corresponding to twice the lateral width of the wall plate 5. The lower metal fitting 7b is L-shaped in a side view and has a bottom plate 71b and a side plate 72b. The bottom plate 71 b has a plurality of bolt holes 73 b and holes 76 that fit into the protrusions 75. The side plate 72b has a plurality of bolt holes 74b. The length of the lower metal fitting 7b is the same as the length of the upper metal fitting 7a.

ボルト孔７３ａ及びボルト孔７３ｂを貫通するボルトは、上段金具７ａ及び下段金具７ｂを互いに結合する。ボルト孔７４ａを貫通するボルトは、上段金具７ａを壁板５の背面上端に取り付ける。ボルト孔７４ｂを貫通するボルトは、下段金具７ｂを壁板５の背面下端に取り付ける。ボルト孔７３ａ、７３ｂ、７４ａ、７４ｂは、施工誤差を吸収するため、横方向に長い長孔であることが望ましい。   Bolts passing through the bolt hole 73a and the bolt hole 73b couple the upper metal fitting 7a and the lower metal fitting 7b to each other. A bolt that penetrates the bolt hole 74 a attaches the upper metal fitting 7 a to the upper rear end of the wall plate 5. The bolt that penetrates the bolt hole 74 b attaches the lower metal fitting 7 b to the lower back end of the wall plate 5. The bolt holes 73a, 73b, 74a, 74b are preferably long holes in the lateral direction in order to absorb construction errors.

上段金具７ａは、シート材６を壁板５の背面上端に固定する。下段金具７ｂは、シート材６を壁板５の背面下端に固定する（図１参照）。   The upper metal fitting 7 a fixes the sheet material 6 to the rear upper end of the wall plate 5. The lower metal fitting 7b fixes the sheet material 6 to the lower back end of the wall plate 5 (see FIG. 1).

図５は、上段金具７ａの突起７５及びボルト孔７３ａと、網状シートであるシート材６の網目６２との位置関係を示す。突起７５は、シート材６の網目６２と係合する。天板７１ａのボルト孔７３ａは、平面視で網目６２内に位置する。   FIG. 5 shows the positional relationship between the protrusions 75 and the bolt holes 73a of the upper metal fitting 7a and the mesh 62 of the sheet material 6 which is a mesh sheet. The protrusion 75 is engaged with the mesh 62 of the sheet material 6. The bolt holes 73a of the top plate 71a are located in the mesh 62 in plan view.

シート材６において、盛土３の土圧によって受ける張力が、上段金具７ａのボルト孔７３ａを貫通するボルトと、突起７５とに分散されるので、張力による損傷が防がれる。   In the sheet material 6, the tension received by the earth pressure of the embankment 3 is distributed to the bolts that penetrate the bolt holes 73 a of the upper metal fitting 7 a and the protrusions 75, thereby preventing damage due to the tension.

再び図２を参照して、擁壁２を背面から見た上段金具７ａ及び下段金具７ｂの配置について説明する。上段金具７ａ及び下段金具７ｂは、シート材６を固定する機能に加え、壁板５同士を連結する機能を有する。例えば、壁板５ａに取り付けられた上段金具７ａが壁板５ａを右隣の壁板５ｂと連結し、壁板５ａに取付られた下段金具７ｂが壁板５ａを左隣の壁板５ｃと連結する。このような上段金具７ｃ及び下段金具７ｄの配置によって、横方向に３枚以上の壁板５を連結することが可能となる。また、壁板５ａに取り付けられた上段金具７ａと、壁板５ｄに取り付けられた下段金具７ｂが互いに結合されて、上下に隣り合う壁板５ａと壁板５ｄ、及び壁板５ｂと壁板５ｅが連結される。   With reference to FIG. 2 again, the arrangement of the upper metal fitting 7a and the lower metal fitting 7b when the retaining wall 2 is viewed from the back will be described. The upper metal fitting 7a and the lower metal fitting 7b have a function of connecting the wall plates 5 to each other in addition to a function of fixing the sheet material 6. For example, the upper metal fitting 7a attached to the wall plate 5a connects the wall plate 5a to the right adjacent wall plate 5b, and the lower metal fitting 7b attached to the wall plate 5a connects the wall plate 5a to the left adjacent wall plate 5c. To do. With the arrangement of the upper metal fittings 7c and the lower metal fittings 7d, it is possible to connect three or more wall plates 5 in the horizontal direction. In addition, the upper metal fitting 7a attached to the wall plate 5a and the lower metal fitting 7b attached to the wall plate 5d are coupled to each other, and the wall plate 5a and the wall plate 5d adjacent to each other in the vertical direction, and the wall plate 5b and the wall plate 5e. Are concatenated.

また、擁壁２の左右端に配置される壁板５用に、壁板５の横幅と同じ長さの上段金具７ｃ及び下段金具７ｄが用意される。上段金具７ｃ及び下段金具は、シート材６を壁板５の背面に固定する共に、互いに結合されることによって上下に隣り合う壁板５を連結する。   Further, for the wall plate 5 arranged at the left and right ends of the retaining wall 2, an upper metal fitting 7 c and a lower metal fitting 7 d having the same length as the horizontal width of the wall plate 5 are prepared. The upper metal fittings 7c and the lower metal fittings fix the sheet material 6 to the back surface of the wall plate 5, and connect the wall plates 5 adjacent to each other by being coupled to each other.

このように、取付金具７を用いて複数の壁板５を連結し、擁壁２を構成するので、一体構造の擁壁を形成するよりも、盛土の補強構造１の施工が容易となる。また、取付金具７は、シート材６を壁板５に固定する機能と、壁板５同士を連結する機能とを兼有するので、施工に必要な金具の種類を少なくすることができる。   As described above, since the plurality of wall plates 5 are connected using the mounting bracket 7 to form the retaining wall 2, the construction of the embankment reinforcing structure 1 is easier than the formation of an integral retaining wall. Moreover, since the attachment metal fitting 7 has both the function of fixing the sheet material 6 to the wall plate 5 and the function of connecting the wall plates 5 to each other, the types of metal fittings necessary for construction can be reduced.

次に、盛土の補強構造１の施工手順を、図６乃至図８を参照して説明する。図６（ａ）に示されるように、シート材６が地盤９上に敷設され、壁板５が地盤９上に１段立設される。シート材６の一端が、壁板５の上端に背面側から前面側に掛けられ、シート材６の中間部が、下段金具７ｂによって、壁板５の背面下端に固定される。１段目の複数の壁板５は、下段金具７ｂによって、横方向に連結される。   Next, the construction procedure of the embankment reinforcement structure 1 will be described with reference to FIGS. As shown in FIG. 6A, the sheet material 6 is laid on the ground 9, and the wall plate 5 is erected on the ground 9 in one stage. One end of the sheet material 6 is hung on the upper end of the wall plate 5 from the back side to the front side, and an intermediate portion of the sheet material 6 is fixed to the lower back end of the wall plate 5 by the lower metal fitting 7b. The plurality of first-stage wall plates 5 are connected in the horizontal direction by the lower metal fitting 7b.

図６（ｂ）に示されるように、シート材６の中間部が、上段金具７ａによって、壁板５の背面上端に固定される。１段目の複数の壁板５は、上段金具７ａによっても、横方向に連結される。次に、シート材６上に盛土３が盛られ、盛土３と壁板５背面との間に砕石４１が充填される。砕石４１は、形成保存層４を構成する。盛土３と砕石４１は、転圧機械によって締め固め、すなわち転圧され、壁板５の高さの約半分の高さに転圧面８１が形成される。   As shown in FIG. 6B, the middle portion of the sheet material 6 is fixed to the upper rear end of the wall plate 5 by the upper metal fitting 7a. The plurality of first-stage wall plates 5 are also connected in the horizontal direction by the upper metal fitting 7a. Next, the embankment 3 is accumulated on the sheet material 6, and the crushed stone 41 is filled between the embankment 3 and the back of the wall plate 5. The crushed stone 41 constitutes the formation preservation layer 4. The embankment 3 and the crushed stone 41 are compacted, that is, compacted by a compaction machine, and a compaction surface 81 is formed at a height that is approximately half the height of the wall plate 5.

図６（ｃ）に示されるように、盛土３が転圧面８１上に盛られ、盛土３と壁板５背面との間に砕石４１が充填される。盛土３と砕石４１は、転圧され、壁板５の高さとほぼ同じ高さにされる。   As shown in FIG. 6 (c), the embankment 3 is accumulated on the rolling surface 81, and the crushed stone 41 is filled between the embankment 3 and the back of the wall plate 5. The embankment 3 and the crushed stone 41 are rolled to a height substantially equal to the height of the wall plate 5.

図７（ａ）に示されるように、壁板５の前面側に掛けられていたシート材６は、矢印Ａの方向、すなわち、盛土３側に折り返され、折り返された端部がピン６１によって盛土３に仮留めされる。１段の壁板に対応して、盛土３及び砕石４１から成る層８が１層形成される。   As shown in FIG. 7A, the sheet material 6 hung on the front surface side of the wall plate 5 is folded in the direction of arrow A, that is, on the embankment 3 side, and the folded end is pinned by a pin 61. Temporarily secured to the fill 3. One layer 8 composed of the embankment 3 and the crushed stone 41 is formed corresponding to the one-stage wall plate.

図７（ｂ）に示されるように、１層目の層８の上に、シート材６がさらに敷設される。２枚のシート材６が重なった部分が、ピン６１によって一括して盛土３に留められる。上段金具７ａの上に、下段金具７ｂが取り付けられる。シート材６は、上段金具７ａ及び下段金具７ｂによって挟まれる。この上段金具７ａ及び下段金具７ｂは、ボルトとナットによって互いに結合される。   As shown in FIG. 7B, the sheet material 6 is further laid on the first layer 8. The portion where the two sheet materials 6 overlap is collectively fastened to the embankment 3 by the pins 61. The lower metal fitting 7b is attached on the upper metal fitting 7a. The sheet material 6 is sandwiched between the upper metal fitting 7a and the lower metal fitting 7b. The upper metal fitting 7a and the lower metal fitting 7b are coupled to each other by bolts and nuts.

図８（ａ）に示されるように、１段目の壁板５の上に２段目の壁板５が立設される。シート材６の中間部が、下段金具７ｂによって、２段目の壁板５の背面下端に固定される。２段目の複数の壁板５は、下段金具７ｂによって、横方向に連結される。シート材６の一端が、２段目の壁板５の上端に掛けられる。   As shown in FIG. 8A, the second-stage wall plate 5 is erected on the first-stage wall plate 5. An intermediate portion of the sheet material 6 is fixed to the lower back end of the second-stage wall plate 5 by the lower metal fitting 7b. The plurality of second-stage wall plates 5 are connected in the lateral direction by the lower metal fitting 7b. One end of the sheet material 6 is hung on the upper end of the second-stage wall plate 5.

図８（ｂ）に示されるように、以下、１層目と同様の施工手順によって、２層目が形成される。所要の高さまで複数の壁板５及び層８が積み重ねられ、盛土の補強構造１が構築される（図１参照）。   As shown in FIG. 8B, the second layer is formed by the same construction procedure as the first layer. A plurality of wall plates 5 and layers 8 are stacked up to a required height, and the embankment reinforcement structure 1 is constructed (see FIG. 1).

なお、本発明は、上記の実施形態の構成に限られず、発明の要旨を変更しない範囲で種々の変形が可能である。例えば、地盤９における壁板５を支える部分に、予めコンクリートを打設してもよい。その場合、１段目の壁板５に取り付けられる下段金具７ｂは、打設されたコンクリートにアンカーボルト等によって固定される。１段目の壁板５をコンクリートに固定することにより、軟らかい地盤上にも擁壁２を形成することができる。   In addition, this invention is not restricted to the structure of said embodiment, A various deformation | transformation is possible in the range which does not change the summary of invention. For example, concrete may be placed in advance on a portion of the ground 9 that supports the wall plate 5. In that case, the lower metal fitting 7b attached to the first-stage wall plate 5 is fixed to the placed concrete by an anchor bolt or the like. By fixing the first-stage wall plate 5 to the concrete, the retaining wall 2 can be formed on the soft ground.

１ 盛土の補強構造
２ 擁壁
３ 盛土
４ 形成保存層
５、５ａ、５ｂ、５ｃ、５ｄ 壁板
６ シート材
６２ 網目
７ 取付金具
７ａ 上段金具
７ｂ 下段金具
７５ 突起 DESCRIPTION OF SYMBOLS 1 Reinforcement structure of embankment 2 Retaining wall 3 Embankment 4 Formation preservation layer 5, 5a, 5b, 5c, 5d Wall board 6 Sheet material 62 Net | network 7 Mounting metal fitting 7a Upper metal fitting 7b Lower metal fitting 75 Protrusion

Claims (4)

面状に立設された複数の壁板により形成した擁壁を用いて、この擁壁の背面側に設けられる盛土を補強する構造であって、
シート材と、
前記壁板の隣り合うもの同士を連結すると共に、前記シート材を前記壁板の背面に固定する取付金具と、を備え、
前記シート材は、前記盛土内に埋設され、該シート材の中間部が前記壁板背面の下端及び上端に固定されて折り返され、盛土を層として区分することを特徴とする盛土の補強構造。 A structure that reinforces the embankment provided on the back side of the retaining wall using a retaining wall formed by a plurality of wall plates erected in a plane,
Sheet material,
The adjacent ones of the wall plates are connected to each other, and a mounting bracket for fixing the sheet material to the back surface of the wall plates,
The reinforcing structure for embankment according to claim 1, wherein the sheet material is embedded in the embankment, and an intermediate portion of the sheet material is fixed to the lower end and the upper end of the back of the wall plate and folded, and the embankment is divided into layers. 前記擁壁の背面に固定された前記シート材と盛土との間に、盛土から該擁壁に加わる土圧を低減すると共に、盛土内の水を排水して盛土の形成を保存する形成保存層を有することを特徴とする請求項１に記載の盛土の補強構造。   A formation preserving layer for reducing earth pressure applied to the retaining wall from the embankment between the sheet material and the embankment fixed to the back surface of the retaining wall, and draining water in the embankment to preserve the formation of the embankment The embankment reinforcing structure according to claim 1, comprising: 請求項１又は請求項２に記載の盛土の補強構造に用いられる取付金具であって、
前記壁板の背面上端に取り付けられる上段金具と、前記壁板の背面下端に取り付られる下段金具と、を有し、
前記上段金具及び下段金具は、それぞれ前記壁板の背面に前記シート材を挟んで取り付られ、横方向に隣り合う前記壁板を連結し、
前記上段金具及び下段金具が互いに結合されることによって上下に隣り合う前記壁板を連結することを特徴とする取付金具。 A mounting bracket for use in the embankment reinforcing structure according to claim 1 or 2,
An upper metal fitting attached to the upper rear end of the wall plate, and a lower metal fitting attached to the lower lower end of the wall plate,
The upper metal fitting and the lower metal fitting are each attached to the back surface of the wall plate with the sheet material interposed therebetween, and connect the wall plates adjacent in the lateral direction,
A mounting bracket characterized in that the upper and lower brackets are connected to each other to connect the wall plates adjacent to each other in the vertical direction. 前記シート材は、網状であり、
前記上段金具は、前記シート材の網目と係合する突起を有することを特徴とする請求項３に記載の取付金具。 The sheet material is net-like,
The mounting bracket according to claim 3, wherein the upper metal fitting has a protrusion that engages with a mesh of the sheet material.
JP2010097338A 2010-04-20 2010-04-20 Reinforcement structure of embankment and mounting bracket used for it Expired - Fee Related JP5268163B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101676016B1 (en) * 2016-06-22 2016-11-15 더원건설(주) A reinforced earth retaining walls increasing drainage capacity and construction method thereof
JP2017025679A (en) * 2015-07-28 2017-02-02 東日本旅客鉄道株式会社 Aseismic embankment structure, and construction method of aseismic embankment

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04108914A (en) * 1990-08-28 1992-04-09 Tokyu Constr Co Ltd Structure for reinforced banking body
JPH05171644A (en) * 1991-12-24 1993-07-09 Mitsui Sekika Sanshi Kk Banking structure, construction method thereof and construction material
JPH09235731A (en) * 1996-03-04 1997-09-09 Oyo Kikaku:Kk Grating crib, composite grating crib and execution method of reinforcing banking
JP2005146623A (en) * 2003-11-14 2005-06-09 Kyokado Eng Co Ltd Reinforced earth wall structure and its construction method
JP2009185516A (en) * 2008-02-06 2009-08-20 Maeda Kosen Co Ltd Reinforcement structure for road banking

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04108914A (en) * 1990-08-28 1992-04-09 Tokyu Constr Co Ltd Structure for reinforced banking body
JPH05171644A (en) * 1991-12-24 1993-07-09 Mitsui Sekika Sanshi Kk Banking structure, construction method thereof and construction material
JPH09235731A (en) * 1996-03-04 1997-09-09 Oyo Kikaku:Kk Grating crib, composite grating crib and execution method of reinforcing banking
JP2005146623A (en) * 2003-11-14 2005-06-09 Kyokado Eng Co Ltd Reinforced earth wall structure and its construction method
JP2009185516A (en) * 2008-02-06 2009-08-20 Maeda Kosen Co Ltd Reinforcement structure for road banking

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017025679A (en) * 2015-07-28 2017-02-02 東日本旅客鉄道株式会社 Aseismic embankment structure, and construction method of aseismic embankment
KR101676016B1 (en) * 2016-06-22 2016-11-15 더원건설(주) A reinforced earth retaining walls increasing drainage capacity and construction method thereof

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