JP4562773B2 - Belt-like fiber reinforcement for supporting reinforced earth wall and its construction method - Google Patents
Belt-like fiber reinforcement for supporting reinforced earth wall and its construction method Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
- E02D29/025—Retaining or protecting walls made up of similar modular elements stacked without mortar
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
- E02D29/0225—Retaining or protecting walls comprising retention means in the backfill
- E02D29/0241—Retaining or protecting walls comprising retention means in the backfill the retention means being reinforced earth elements
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2200/00—Geometrical or physical properties
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0006—Plastics
- E02D2300/0009—PE
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0051—Including fibers
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Abstract
Description
本発明は、補強土壁を支持するための帯状の繊維補強材の施工方法及びこの施工方法に使用される帯状の繊維補強材に関し、特に、アンカー及びアンカーピンなしに帯状の繊維補強材の先端部を半幅に折れ、土壁ブロックに形成された補強材の挿入溝に直接嵌合することにより強固に連結され、アンカーやアンカーピンのような副資材の消費を低減すると共に、連結作業の単純化が図れ、補強材の先端部の弛みが発生せず、応力が集中されなくて土壁面の施工瑕疵が発生せず、補強土体内に埋め込まれる帯状の繊維補強材は、全幅に展開された状態で設置されて補強土体との摩擦支持力を発揮し、繊維補強材の後端部は前部の摩擦力に加えて、手動支持抵抗力を発揮できるようにしたものである。 TECHNICAL FIELD The present invention relates to a method for constructing a belt-shaped fiber reinforcement for supporting a reinforcing earth wall, and a belt-shaped fiber reinforcement used for the construction method, and in particular, a tip of a belt-shaped fiber reinforcement without an anchor and an anchor pin. The part is folded in half and directly connected to the reinforcing material insertion groove formed in the earth wall block, so that it is firmly connected, reducing the consumption of secondary materials such as anchors and anchor pins, and simplifying the connection work The strip-shaped fiber reinforcement material embedded in the reinforced soil was expanded to the full width without any loosening of the tip of the reinforcement material, no stress concentration, and no dredging of the soil wall surface. It is installed in a state and exhibits a friction supporting force with the reinforced soil body, and the rear end portion of the fiber reinforcing material can exhibit a manual supporting resistance force in addition to the friction force of the front portion.
図10は、土壁築造用ブロック及び帯状の繊維補強材を使用して築造される一般の補強土壁の築造状態を示す斜視図であって、土壁の前面をなすブロック1を支持するための帯状の繊維補強材2の先端部(F)は、アンカー3及びアンカーピン4によりブロック1に連結され、残りの部分は展開状態で補強土体5内に埋め込まれる構造からなる。 FIG. 10 is a perspective view showing a construction state of a general reinforced soil wall constructed using a soil wall construction block and a belt-like fiber reinforcing material, in order to support the block 1 forming the front surface of the soil wall. The end portion (F) of the band-shaped fiber reinforcing material 2 is connected to the block 1 by the anchor 3 and the anchor pin 4, and the remaining portion is embedded in the reinforced earth body 5 in the expanded state.
一方、前述したような従来の帯状の繊維補強材を使用した典型的な補強土壁では、帯状の繊維補強材2とブロック1とを連結するためのアンカー3及びアンカーピン4が連結部位毎に設けられなければならないため、その数量が最小限のブロック数の数倍になって副資材に対する費用負担が大きくなり、その連結作業においても、帯状の繊維補強材2の先端部(F)がアンカーピン4を囲みながら連結されるため、この折れる部分が弛まないように小さな曲率半径になるように引っ張った後、その状態を維持できるように帯状の繊維補強材2の後端部(R)に仮固定鉄筋6及び固定杭7などを使用して固定しなければならないので、副資材が追加的に必要になるという問題点があった。また、このような副資材は、土壁の施工過程において補強土体5内にそのまま埋め込まれるため、リサイクルが不可能になって、資源の浪費且つ施工単価の上昇を招くことになった。前述した帯状の繊維補強材の引っ張り作業は、殆ど多数が同時に作業しなければならず、非常に大変な作業である。また、補強材を引っ張った状態で補強土体上に仮固定するための作業は非能率的なので、補強土壁の施工性の低下要因として作用した。 On the other hand, in a typical reinforced earth wall using the conventional belt-shaped fiber reinforcing material as described above, the anchor 3 and the anchor pin 4 for connecting the band-shaped fiber reinforcing material 2 and the block 1 are provided for each connecting portion. Since the number of blocks is several times the minimum number of blocks, the burden on the secondary material increases, and the tip (F) of the strip-shaped fiber reinforcement 2 is anchored in the connection work. Since it is connected while surrounding the pin 4, it is pulled to a small radius of curvature so that the bent portion does not loosen, and then the rear end portion (R) of the belt-like fiber reinforcement 2 can be maintained so that the state can be maintained. Since it has to be fixed using the temporarily fixed reinforcing bars 6 and the fixed piles 7, there is a problem that additional materials are additionally required. Moreover, since such a subsidiary material is embedded as it is in the reinforced earth body 5 in the construction process of the earth wall, it becomes impossible to recycle, resulting in a waste of resources and an increase in construction unit cost. The above-described pulling operation of the belt-shaped fiber reinforcing material is a very difficult operation because almost all of the pulling operations must be performed simultaneously. In addition, the work for temporarily fixing the reinforcing material on the reinforced soil body is inefficient, so that it acts as a factor that reduces the workability of the reinforced soil wall.
また、従来の帯状の繊維補強材は、ブロックとの連結部位自体が上下への流動性に対して柔軟でないため、施工後の補強土体の沈下に従う構造体、即ち、ブロックからなる土壁面の変位が大きく発生し、繊維補強材の先端部が曲率半径が小さくなって施工完了後の応力が集中されるという問題点がある。また、ブロックと繊維補強材との連結部位のサイズや形態に従って異なる形態や寸法の連結資材を使用しなければならないため、副資材の追加による施工費用が上昇し、且つ施工能率が低下するという問題点がある。これらの連結資材を使用する場合、ブロックと補強材との連結構造に対する安全性を確保するのに多くの努力をしなければならない。 In addition, since the conventional belt-shaped fiber reinforcing material is not flexible with respect to the fluidity in the vertical direction, the structure according to the subsidence of the reinforced earth body after construction, that is, the earth wall surface composed of blocks. There is a problem that a large displacement occurs, and the distal end portion of the fiber reinforcing material has a small radius of curvature, so that stress after the completion of construction is concentrated. In addition, since it is necessary to use connecting materials with different forms and dimensions according to the size and form of the connecting part between the block and the fiber reinforcement, there is a problem that the construction cost due to the addition of auxiliary materials increases and the construction efficiency decreases. There is a point. When these connecting materials are used, much efforts must be made to ensure the safety of the connecting structure between the block and the reinforcing material.
また、従来の帯状の繊維補強材は、ブロックのサイズに比べて相対的に幅が広いため、土壁体を構成するブロックのサイズ及び数量に比べて繊維補強材の付設密度が低くなることで、不安定な構造体が形成されるという問題点もある。 In addition, since the conventional belt-shaped fiber reinforcing material is relatively wide compared to the block size, the density of the fiber reinforcing material is reduced compared to the size and quantity of the blocks constituting the earth wall body. There is also a problem that an unstable structure is formed.
上記問題点を解消するために、前述した帯状の繊維補強材を1人でも容易に効率良く引っ張られるように、緊線器の原理を用いた多様な形態の補強材及びこのような緊線器を用いた補強材の引張方法を開発して、韓国特許第302139号、同特許第404128号、韓国実用新案登録第216353号、同登録第221457号、同登録第221903号、同登録第223133号及び同登録第314862号などを獲得し、実際に施工現場に適用している。 In order to solve the above-mentioned problems, various types of reinforcing materials using the principle of a stringer and such a stringer so that the above-described belt-shaped fiber reinforcing material can be easily and efficiently pulled by one person. Developed a method of pulling a reinforcing material using a rubber, Korean Patent No. 302139, Patent No. 404128, Korean Utility Model Registration No. 216353, Registration No. 221457, Registration No. 22903, Registration No. 223133 And the same registration No. 314862, etc. have been acquired and applied to the actual construction site.
それにも関わらず、前述したような従来の補強土壁の帯状の繊維補強材の設置構造では、補強材の引張作業は容易且つ迅速に行われるが、アンカー、アンカーピン及び仮固定鉄筋などの帯状の繊維補強材のような、ブロックと連結して補強土体の埋め込み前まで引張状態を維持するための副資材の過剰所要に対する問題点などは相変らず指摘されている。本出願人をはじめとして大部分の補強土壁の施工関連者らは、長期間に渡りこれに対する解決策を求めているが、今までも明確な改善案が具備されていない。 Nonetheless, in the conventional fiber reinforced material installation structure of the reinforced earth wall as described above, the tensile work of the reinforcing material is easily and quickly performed, but the band shape of the anchor, anchor pin, temporarily fixed reinforcing bar, etc. Problems such as excessive requirements for auxiliary materials for maintaining the tension state before embedding the reinforced soil body by connecting to the block, such as the fiber reinforcement material of No. 4, are still pointed out. Although most of the people involved in the construction of reinforced earth walls, including the present applicant, have been seeking a solution for this over a long period of time, no clear improvement plan has been provided so far.
本発明は上記問題点を解消するためになされたもので、その目的は、ブロック及び帯状の繊維補強材を用いて補強土壁を築造する際に、土壁築造用ブロックを支持するための帯状の繊維補強材をアンカー及びアンカーピン無しに土壁築造用ブロックに直接連結し、補強土体内にジグザグ状に連続設置または個別設置によりブロックを強固に支持でき、土壁体を構成するブロックのサイズ及び数量に符合し得る補強材の付設密度を持つ補強土壁支持用帯状の繊維補強材の施工方法及びその施工方法に適合した形態の帯状の繊維補強材を提供することにある。 The present invention has been made to solve the above-mentioned problems, and its purpose is to provide a belt-like shape for supporting a soil-building block when building a reinforced soil wall using a block and a belt-like fiber reinforcing material. The size of the block that constitutes the earth wall body can be directly connected to the earth building block without anchors and anchor pins, and the block can be firmly supported by continuous installation or individual installation in a zigzag shape within the reinforcement earth Another object of the present invention is to provide a method for constructing a reinforced soil wall supporting strip-shaped fiber reinforcement having a density of reinforcing members that can match the quantity, and a strip-shaped fiber reinforcement having a form adapted to the construction method.
上記目的を達成するために、本発明は、補強土壁面をなすブロックの補強材挿入溝に帯状の繊維補強材がジグザグ状に連続して連結されたり、又は個別的に連結されるが、この繊維補強材は、ブロックの補強材挿入溝に嵌合される部分が半幅に折れた状態で嵌合され、残りの部分は展開された状態で補強土体に埋め込まれる補強土壁支持用帯状の繊維補強材の施工方法を提供する。 In order to achieve the above object, the present invention is configured such that a belt-like fiber reinforcing material is continuously connected in a zigzag manner or individually connected to a reinforcing material insertion groove of a block forming a reinforcing earth wall surface. The fiber reinforcement is fitted in a state in which the portion to be fitted into the reinforcing material insertion groove of the block is folded in half width, and the remaining portion is expanded in a state of a band for reinforcing earth wall support embedded in the reinforced earth body. Provide a method for constructing fiber reinforcement.
本発明の補強材設置構造において、ジグザグ状に設置された補強材の後端部は、幅方向に折れ、この折れた部分が仮固定釘(又は仮固定鉄筋)により補強土体に仮固定されたり、コンクリートブロックなどからなる抵抗体に固定ピンにより固定された状態で補強土体に埋め込まれたり、その長手方向に半幅が折れた状態で起立して補強土体にそのまま埋め込まれたり、又は抵抗体に固定ピンにより固定される等、多様な構造で設置される。 In the reinforcing material installation structure of the present invention, the rear end portion of the reinforcing material installed in a zigzag shape is folded in the width direction, and the folded portion is temporarily fixed to the reinforcing earth by temporary fixing nails (or temporary fixing reinforcing bars). Or embedded in a reinforced soil body in a state of being fixed to a resistor body made of a concrete block or the like with a fixing pin, or standing up in a state where a half-width is broken in the longitudinal direction and embedded in the reinforced soil body as it is, or resistance It is installed in various structures, such as being fixed to the body with fixing pins.
また、本発明は、前述した施工方法に適した帯状の繊維補強材として、長手方向に沿って複数のポリエステル繊維束が平行に配置され、その外部にポリエチレン樹脂で被服層が形成された帯状の繊維補強材において、帯状の繊維補強材の長手方向に沿って中間部分の被服層が他の部分よりも薄くなるように、折れ溝が形成された補強土壁支持用帯状の繊維補強材を提供する。 In addition, the present invention provides a strip-shaped fiber reinforcement suitable for the above-described construction method, in which a plurality of polyester fiber bundles are arranged in parallel along the longitudinal direction, and a coating layer is formed of polyethylene resin outside thereof. In the fiber reinforcement material, a belt-shaped fiber reinforcement material for supporting a reinforced soil wall in which a folding groove is formed so that the clothing layer in the middle portion is thinner than the other portions along the longitudinal direction of the belt-shaped fiber reinforcement material is provided. To do.
好ましくは、折れ溝は、帯状の繊維補強材の前面と後面ともに形成され、繊維補強材を長手方向に沿って上方及び下方の何れも半幅に容易に折ることができる。 Preferably, the folding groove is formed on both the front surface and the rear surface of the belt-shaped fiber reinforcing material, and the fiber reinforcing material can be easily folded in half width along the longitudinal direction.
より好ましくは、帯状の繊維補強材は、その長手方向に沿って50cmや1mなどの一定の間隔に、帯状の繊維補強材の幅方向に沿って線形の長さ表示用突起を形成することで、計尺器を使用しなくても補強材の長さを計測して補強材を切断したり一定の長さに折れるのに便利である。 More preferably, the band-shaped fiber reinforcing material is formed by forming linear length display protrusions along the width direction of the band-shaped fiber reinforcing material at a constant interval such as 50 cm or 1 m along the longitudinal direction. Even without using a measuring instrument, it is convenient to measure the length of the reinforcing material and cut the reinforcing material or break it into a certain length.
本発明によれば、繊維補強材の後端部も、別途の資材を使用することなく、補強材を長手方向に沿って半幅に折れた状態又は本来の幅になるように起立した状態で補強土体内に埋め込む場合、補強材自体の摩擦力に加えて、繊維補強材の後端部で受動抵抗力が発生することで、より強固で安定した補強土壁を築造できる。 According to the present invention, the rear end portion of the fiber reinforcing material is also reinforced in a state in which the reinforcing material is folded in half along the longitudinal direction or standing up to the original width without using a separate material. In the case of embedding in the soil body, in addition to the frictional force of the reinforcing material itself, a passive resistance force is generated at the rear end of the fiber reinforcing material, so that a stronger and more stable reinforced earth wall can be constructed.
また、本発明は、繊維補強材の幅が既存の帯状の繊維補強材より半分程度しかならないため、運搬及び現場での施工時の取扱いが容易である。また、繊維補強材の幅が土壁築造用ブロックのサイズに適しているため、繊維補強材の付設密度も最適の状態で設計できる。よって、最小限の材料を使用して安定した構造を持つブロック組立式補強土壁を築造できる。 Moreover, since the width | variety of a fiber reinforcement material becomes only about half that of the existing strip | belt-shaped fiber reinforcement material, this invention is easy to carry and the handling at the time of construction on the spot. In addition, since the width of the fiber reinforcement is suitable for the size of the earth wall building block, the density of the fiber reinforcement can be designed in an optimum state. Therefore, it is possible to construct a block assembly type reinforced earth wall having a stable structure by using a minimum material.
以下、添付図面に基づき、本発明の好適な実施形態を詳細に説明する。 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
図1は、本発明による帯状の繊維補強材の構造を示す斜視図及び部分拡大図である。同図に示すように、本発明の帯状の繊維補強材10は、複数のポリエステル繊維束12が平行に配置され、その外部にポリエチレン被服層14が形成された帯状の繊維補強材であって、帯状の繊維補強材10の長手方向に沿って中間部分が他の部分よりも薄くなるように折れ溝16が形成され、その長手方向に沿って50cmや1mなどの一定の間隔に、帯状の繊維補強材の幅方向に線形の長さ表示用突起18が形成される。
FIG. 1 is a perspective view and a partially enlarged view showing the structure of a belt-shaped fiber reinforcing material according to the present invention. As shown in the figure, the belt-
本発明の帯状の繊維補強材10は、同図に示すように、中間部分の折れ溝16を中心として左右両側に同数量のポリエステル繊維束12が配置されているため、折れ溝16が折れると、半幅に折り重なることになる。このように製作した理由は、繊維補強材10を土壁築造用ブロック20の補強材挿入溝22に直接嵌合できるようにするためである。帯状の繊維補強材10の全幅及び厚さは、ブロック20の補強材挿入溝22の寸法と関連されているため、ブロック及び補強材の設計時にこれを勘案すべきである。
As shown in the figure, the belt-shaped
本発明の帯状の繊維補強材10は、図1に示す形態、すなわち、ポリエステル繊維束12が折れ溝16の両側に各々2つずつ配置されたものに限定されず、それよりも少なくても多くても良い。
The strip-shaped
折れ溝16は、帯状の繊維補強材10の前面と後面ともに形成され、繊維補強材10を長手方向に沿って上方及び下方の何れも容易に半幅に折れ重なるようにすることで、折れ方向に関係なく、現場での即刻的な作業性を高めることができる。
The folding groove 16 is formed on both the front surface and the rear surface of the belt-shaped
長さ表示用突起18は、繊維補強材10の長手方向に沿って50cmや1mなどの一定の間隔に、繊維補強材の幅方向に沿って線形に形成されることで、目視で容易に確認できる。これは、補強材の設置現場において、作業者が別途の計尺器を使用して帯状の繊維補補強材の長さを測定しなくても、長さ表示用突起18により繊維補強材の長さを迅速且つ正確に計測して、補強材を切断したり一定の長さ別に折れるようにするためである。
The projection 18 for length indication is easily confirmed visually by being formed linearly along the width direction of the fiber reinforcing material at a constant interval such as 50 cm or 1 m along the longitudinal direction of the
このように構成された本発明の帯状の繊維補強材を使用して、補強土壁用ブロックを支持するための多様な施工方法について説明する。 Various construction methods for supporting the reinforced earth wall block using the band-shaped fiber reinforcing material of the present invention configured as described above will be described.
図2〜図5は、本発明の補強材の施工方法に対する多様な実施形態を示す図である。図2に示す実施形態では、補強土壁面をなすブロック20の補強材挿入溝22に、帯状の繊維補強材10の先端部(F)が半幅に折れた状態に嵌合されて補強土体50内にジグザグ状に設けられる。それぞれの先端部(F)は、隣接するブロック20の補強材挿入溝22に連続して嵌合される構造からなる。
2-5 is a figure which shows various embodiment with respect to the construction method of the reinforcing material of this invention. In the embodiment shown in FIG. 2, the reinforcing
また、本実施形態において、帯状の繊維補強材10の後端部(R)は、長手方向に沿って半幅に折れ、この折れた部分がその形態を維持できるように、補強土体50に打込まれる仮固定釘30により固定された状態で、その上に更に補強土体が覆われて固められる。
Further, in the present embodiment, the rear end portion (R) of the belt-shaped
図6は、本発明の帯状の繊維補強材の施工方法におけるブロックとの連結部位を示す拡大図である。なお、符号60は、長手方向に沿って半幅に折れた補強材10の先端部(F)をブロック20の補強材挿入溝22に嵌合する時に使用するために、合成樹脂で成形されたU形の保護具である。保護具60は、その内側に形成された嵌合溝62に半幅に折れた繊維補強材10の先端部(F)が嵌合されて補強材10の折れ状態をより一定に維持させると共に、繊維補強材10の先端部(F)が粗面からなるコンクリート材ブロックに摩擦するのを最大限に防止して、繊維補強材の損傷を低減するためのものである。
FIG. 6 is an enlarged view showing a connection portion with a block in the method for constructing the belt-shaped fiber reinforcing material of the present invention.
保護具60は、施工現場で必要に応じて使用したり省略したりできる。
The
繊維補強材10の先端部(F)は、ブロック20の補強材挿入溝22に嵌合されるため、繊維補強材10及びブロック20が別途のアンカーやアンカーピンなしに直接連結される。補強材挿入溝22に嵌合された状態に加えて、この補強材挿入溝22の後側に上下ブロック20間の連結のための上下連結ピン70が支持されることで、繊維補強材10がブロック20をより強固に支持できる。
Since the front end portion (F) of the
図3は、繊維補強材の施工方法に対する第2の実施形態を示す。本実施形態では、補強材10の先端部(F)及び中間部分は、図2に示す実施形態の設置構造と同様であり、補強材10の後端部(R)が先端部(F)では異なり、幅方向に折れた状態で仮固定釘30により固定されて補強土体50にそのまま埋め込まれる設置構造からなる。
FIG. 3 shows a second embodiment for a method for constructing a fiber reinforcement. In the present embodiment, the front end portion (F) and the intermediate portion of the reinforcing
図4は、本発明による帯状の繊維補強材の設置構造に対する第3の実施形態を示す。本実施形態でも、補強材10の先端部(F)及び中間部分は、図2に示す実施形態と同様であり、補強材10の後端部(R)が幅方向に折れた状態でコンクリートなどからなる抵抗体40に挟まれて固定ピン42により連結された設置構造からなる。
FIG. 4 shows a third embodiment for the installation structure of the belt-like fiber reinforcement according to the present invention. Also in this embodiment, the front end portion (F) and the intermediate portion of the reinforcing
図5は、本発明による帯状の繊維補強材の設置構造に対する第4の実施形態を示す。これは、図3に示す実施形態の設置構造と基本的に同様であり、補強材10の後端部(R)が長手方向に沿って半幅に折れた状態で抵抗体40に挟まれて固定ピン42により連結された設置構造からなる。
FIG. 5 shows a fourth embodiment for the installation structure of the belt-shaped fiber reinforcement according to the present invention. This is basically the same as the installation structure of the embodiment shown in FIG. 3, and is fixed by being sandwiched between the resistors 40 in a state where the rear end portion (R) of the reinforcing
図4及び図5に示す補強材の施工方法では、別途の抵抗体40を繊維補強材10の後端部(R)に結合させることで、補強材の摩擦抵抗に加えて、受動抵抗を特別に付加する必要がある施工現場に適用できる。
In the reinforcing material construction method shown in FIGS. 4 and 5, a separate resistor 40 is coupled to the rear end portion (R) of the
図2〜図5に示す実施形態では、帯状の繊維補強材10を補強土体50上でジグザグ状に連続設置した場合について説明したが、本発明はこれに限定されず、図7に示すように、帯状の繊維補強材10を一定の長さに切断し、各ブロック20の補強材挿入溝22に先端部(F)を半幅に折れて嵌合し、切断した後端部(R)は各々個別的に展開した状態で補強土体50内に埋設されることも含む。
In the embodiment shown in FIGS. 2 to 5, the case where the belt-like
図8及び図9は、本発明による帯状の繊維補強材の施工方法に対する第6及び第7の実施形態を示す。 8 and 9 show sixth and seventh embodiments for the method of constructing the belt-shaped fiber reinforcement according to the present invention.
図8及び図9に示す補強材の施工方法において、繊維補強材10の先端部(F)を長手方向に沿って半幅に折れてブロック20の補強材挿入溝22に連結する方法は、前述した第1の実施形態〜第5の実施形態と同様であが、繊維補強材10の先端部(F)を隣接するブロック20、20の補強材挿入溝22、22に一度に嵌合したり(図8の場合)、一つのブロック20の左右側に形成された補強材挿入溝22、22に一度に嵌合する方式を使用する点が異なる。
In the reinforcing material construction method shown in FIGS. 8 and 9, the method of connecting the reinforcing
図8及び図9の実施形態でも、帯状の繊維補強材10の後端部(R)を長手方向に沿って半幅に折れて起立状態で補強土体50に埋め込まれることで、補強材10の中間部分の摩擦力に加え、受動支持抵抗力を追加できる。必要に応じては、繊維補強材10の後端部(R)を半幅に折れず、本来の幅を垂直に起立した状態で補強土体50に埋め込むこともできる。
8 and 9, the rear end portion (R) of the belt-shaped
本発明による帯状の繊維補強材の施工方法では、前述した第1の実施形態〜第7の実施形態のみに限定されず、土壁をなすブロックの多様な形態に従って繊維補強材の先端部の連結部位の形態やサイズは変化し得る。繊維補強材の連結方法は、別途の副資材を使用せず、作業者が現場で繊維補強材の先端部を長手方向に沿って半幅に折れた状態でブロックの補強材挿入溝に嵌合することにより簡単に完了される。ブロックに連結した部位の繊維補強材は、補強材挿入溝に密着された状態なので、作業中に離脱する恐れがなく、従来のように短い金属材アンカー及びアンカーピンを用いた連結時に発生し得る連結部位(折れ部位)での応力集中及び補強材の弛みが発生しないため、土壁の施工完了後に繊維補強材の弛みによる土壁面の不規則な突出現象が発生しない。さらに、本発明では、ブロックの補強材挿入溝に嵌合される折れ部分と、補強土体に埋め込まれる展開部分との境界部位は、補強土体の沈下時、折れ部分が展開されたり展開部分が折れるなどにより、応力の集中を防止すると共に、補強土体の沈下に従うブロック壁体の集中的な垂直荷重によるブロックの破損を防止できる緩衝材として働く。 The method for constructing the belt-shaped fiber reinforcement according to the present invention is not limited to only the first to seventh embodiments described above, and the connection of the front ends of the fiber reinforcement according to various forms of blocks forming the earth wall. The form and size of the site can vary. The connection method of the fiber reinforcement does not use a separate auxiliary material, and the operator fits the reinforcing material insertion groove of the block with the front end of the fiber reinforcement folded in half along the longitudinal direction at the site. Is easily completed. Since the fiber reinforcing material at the part connected to the block is in close contact with the reinforcing material insertion groove, there is no risk of detachment during work, and it can occur when connecting using short metal anchors and anchor pins as in the past. Since stress concentration and loosening of the reinforcing material do not occur at the connecting part (folded part), the irregular protrusion of the soil wall due to the loosening of the fiber reinforcing material does not occur after the construction of the soil wall is completed. Further, in the present invention, the boundary part between the folded part fitted in the reinforcing material insertion groove of the block and the developed part embedded in the reinforced earth body is a part where the folded part is developed or the developed part when the reinforcing earth body sinks. It acts as a cushioning material that prevents concentration of stress due to breakage of the block and prevents damage to the block due to intensive vertical load of the block wall body following subsidence of the reinforced soil body.
前述したように、本発明による帯状の繊維補強材の施工方法では、補強土壁をなす土壁ブロックと連結するとき、別途のアンカーやアンカーピンなどを使用しないため、副資材に対する追加費用の負担がなく、ブロック及び帯状の繊維補強材間の連結作業が可能になり、ブロックに形成された補強材挿入溝に帯状の繊維補強材を半幅に折れた状態で直接嵌合して支持させるため、アンカーを使用して帯状の繊維補強材を連結して引張施工を行う場合に発生し得る帯状の繊維補強材の弛みを完壁に解消でき、帯状の繊維補強材の後端部は、補強土体上に仮固定釘等で容易に固定したり、補強土体の領域が狭かったり、強固な支持力を発揮させるには、補強材を折れて起立して自体が抵抗体機能を発揮するようにしたり、或いは、別途の抵抗体などを使用することができるため、補強土壁を支持するための帯状の繊維補強材の設置作業性が向上し、資材費及び人件費を低減できるため、補強土壁の経済的な施工が可能になる。 As described above, in the method for constructing the belt-shaped fiber reinforcing material according to the present invention, when connecting with the earth wall block forming the reinforcing earth wall, a separate anchor or anchor pin is not used, so an additional cost for the auxiliary material is borne. There is no connection between the block and the belt-shaped fiber reinforcement, and the band-shaped fiber reinforcement is directly fitted and supported in the half-width folded state in the reinforcing material insertion groove formed in the block. The slack of the belt-like fiber reinforcement that can occur when tensioning is performed by connecting the belt-like fiber reinforcements using anchors, and the rear end of the belt-like fiber reinforcement is reinforced soil. In order to easily fix it on the body with temporary fixing nails, etc., to narrow the area of the reinforced earth body, or to exert a strong support force, it is necessary to fold the reinforcing material and stand up to exhibit the resistor function itself Or a separate resistor Can improve the installation workability of the belt-shaped fiber reinforcement to support the reinforced earth wall, and can reduce the material cost and labor cost, so the reinforced earth wall can be economically constructed. Become.
本発明は望ましい実施形態を参照して説明したが、当業者は、添付の請求項により限定されず、本発明の思想から逸脱しない範囲内で多様に変更できることが理解できる。
Although the present invention has been described with reference to preferred embodiments, those skilled in the art will recognize that the invention is not limited by the appended claims and that various changes can be made without departing from the spirit of the invention.
Claims (8)
前記帯状の繊維補強材(10)は、長手方向に沿って中間部分が他の部分よりも薄くなるように折れ溝(16)が形成されることを特徴とする、補強土壁支持用の帯状の繊維補強材。A plurality of polyester fiber bundles are arranged in parallel, and are strip-shaped fiber reinforcements coated with polyethylene resin on the outside,
The band-shaped fiber reinforcing material (10) has a band-like shape for supporting a reinforced soil wall, wherein a folded groove (16) is formed so that an intermediate portion is thinner than other portions along the longitudinal direction. Fiber reinforcement.
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KR1020040111929A KR100660356B1 (en) | 2004-10-19 | 2004-12-24 | reinforcing strip for supporting reinforced earth wall and its placement method |
PCT/KR2005/000584 WO2006043739A1 (en) | 2004-10-19 | 2005-03-03 | Reinforcing strip for supporting reinforced earth wall and its placement method |
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EP (1) | EP1805375B1 (en) |
JP (1) | JP4562773B2 (en) |
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JP3818939B2 (en) * | 2002-05-01 | 2006-09-06 | 強化土エンジニヤリング株式会社 | Reinforced soil structure, embankment reinforcement and reinforced soil block |
AU2003272135A1 (en) * | 2002-12-06 | 2004-06-30 | Dongbang S & C Co., Ltd. | Block for constructing retaining wall, prefabricated reinforced retaining wall constructed using the block and construction method of the prefabricated reinforced retaining wall |
FR2860811A1 (en) * | 2003-10-13 | 2005-04-15 | Freyssinet Int Stup | REINFORCED GROUND WORK AND METHOD FOR ITS CONSTRUCTION |
-
2004
- 2004-12-24 KR KR1020040111929A patent/KR100660356B1/en active IP Right Grant
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2005
- 2005-03-03 EP EP05726894A patent/EP1805375B1/en active Active
- 2005-03-03 WO PCT/KR2005/000584 patent/WO2006043739A1/en active Application Filing
- 2005-03-03 CN CNB2005800330797A patent/CN100529276C/en not_active Expired - Fee Related
- 2005-03-03 AU AU2005296455A patent/AU2005296455A1/en not_active Abandoned
- 2005-03-03 PL PL05726894T patent/PL1805375T3/en unknown
- 2005-03-03 MX MX2007003685A patent/MX2007003685A/en active IP Right Grant
- 2005-03-03 ES ES05726894T patent/ES2317218T3/en active Active
- 2005-03-03 JP JP2007536600A patent/JP4562773B2/en not_active Expired - Fee Related
- 2005-03-03 AT AT05726894T patent/ATE412087T1/en not_active IP Right Cessation
- 2005-03-03 US US10/555,861 patent/US20070009331A1/en not_active Abandoned
- 2005-03-03 DE DE602005010601T patent/DE602005010601D1/en active Active
- 2005-03-03 CA CA2584978A patent/CA2584978C/en not_active Expired - Fee Related
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Also Published As
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PL1805375T3 (en) | 2009-04-30 |
EP1805375A1 (en) | 2007-07-11 |
MX2007003685A (en) | 2007-07-09 |
EP1805375B1 (en) | 2008-10-22 |
AU2005296455A1 (en) | 2006-04-27 |
CA2584978C (en) | 2010-08-17 |
KR20060034611A (en) | 2006-04-24 |
CA2584978A1 (en) | 2006-04-27 |
EP1805375A4 (en) | 2007-10-17 |
MY140660A (en) | 2010-01-15 |
KR100660356B1 (en) | 2006-12-21 |
JP2008517186A (en) | 2008-05-22 |
CN100529276C (en) | 2009-08-19 |
WO2006043739A1 (en) | 2006-04-27 |
CN101031693A (en) | 2007-09-05 |
DE602005010601D1 (en) | 2008-12-04 |
US20070009331A1 (en) | 2007-01-11 |
ES2317218T3 (en) | 2009-04-16 |
ATE412087T1 (en) | 2008-11-15 |
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