JP4022321B2 - Connecting structure of grid material for ground reinforcement - Google Patents

Connecting structure of grid material for ground reinforcement Download PDF

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Publication number
JP4022321B2
JP4022321B2 JP20588598A JP20588598A JP4022321B2 JP 4022321 B2 JP4022321 B2 JP 4022321B2 JP 20588598 A JP20588598 A JP 20588598A JP 20588598 A JP20588598 A JP 20588598A JP 4022321 B2 JP4022321 B2 JP 4022321B2
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Prior art keywords
grid material
grid
frame
folded
mesh
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JP2000027191A (en
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孝之 桝尾
孝信 杉山
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Taiyo Kogyo Co Ltd
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Taiyo Kogyo Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は地盤補強用グリッド材の連結構造に係り、特にグリッド材の連結を容易に行えるようにした地盤補強用グリッド材の連結構造に関する。
【0002】
【従来の技術】
近年、ジオテキスタイルあるいはジオシンセティクスと呼ばれる樹脂複合材料による地盤補強が行われている。その一例として図9に示したような補強盛土工法等も施工されている。この補強盛土工法では、格子網状に樹脂成形されたグリッド材51を土と交互に積層して補強土を構成し、補強盛土を築造される。この種の補強盛土工法に使用されるグリッド材51は、所定の幅(たとえば2m)の長さ50m程度のロール形状の荷姿で現場に搬入され、盛土の外的安定性を満足するように盛土背面のすべり面Sより長い設計長さ(敷設長さ)に切断され、各層ごとに幅方向に並べて敷きつめるように施工されている。このときすべり面Sを横切るグリッド材51は土塊滑りによって生じるせん断力や引き抜き力に抵抗できる強度が得られるように設計されている。また、補強材としての強度低下のおそれがあるので、すべり面S内ではグリッド材51は連結しないような設計が行われていた。このため、1本のロールを所定の長さに切断して使用する際、設計長さ分が確保できない半端なロール部分はロスとして処理されてきた。
【0003】
しかし、材料の経済性を考慮した場合、グリッド材を連結した部分においてもグリッド材と同等の引張強度が確保できれば、半端な長さに不足している分を連結して使用することができ、ロスの発生を最小限にすることができる。
【0004】
このような観点から、図10、図11に示したようなグリッド材の連結構造50、55がすでに提案されている。図10は従来のグリッド材51の連結構造50の一例を示した説明図である(特開平9−228372号公報参照)。このグリッド材51の連結構造50では連結されるグリッド材51の端部51aにおいて、それぞれのグリッド材51のたて糸に相当するストランド52が所定の範囲にわたり絡み合うように螺旋状に捻り加工されている。さらにこの螺旋状の捻り部分53に鉄筋等の連結棒54を挿入して連結部分の一体化を図っている。
【0005】
また、図11に示したグリッド材56の連結構造55では、重ね合わされたグリッド材56、56の目合いに沿って接続ロープ57をループ状に編み上げていくことにより、グリッド材56の連結を図っている。このとき連結部分58が弱部とならないように接続ロープ57の強度や耐久性はグリッド材56と同等以上になるように選択されている。
【0006】
【発明が解決しようとする課題】
以上に示したグリッド材の連結構造では、いずれも連結するグリッド材のストランドや目合い部分を1箇所ずつ連結する方法を採用しているため、連結作業に手間がかかり、グリッド材の敷設作業全体の作業効率が低下してしまい、グリッド材を連結して使用するという経済的な利点も生かすことができない。
【0007】
そこで、本発明の目的は上述した従来の技術が有する問題点を解消し、グリッド材同士の連結作業を迅速に行えるようにした地盤補強用グリッド材の連結構造を提供することにある。
【0008】
【課題を解決するための手段】
上述の目的を達成するために、本発明はグリッド材の幅方向に沿って取り付けられ、連結されるグリッド材の端部を揃えて折り返した部分を挿通させるグリッド材挿通スリットを形成するように仕切材が設けられた枠体フレームと、前記仕切材近傍の前記グリッド材の折り返し部分に取り付けられ、前記挿通スリットから前記折り返した部分が抜けないようにしたストッパとを備えた連結治具により前記グリッド材の連結を行うようにしたことを特徴とする。
【0009】
第2の発明として、グリッド材の幅方向に沿って取り付けられ、連結されるグリッド材の端部を揃えて折り返した部分の網目を貫通する細棒体が、棒部材の長手方向に所定ピッチで櫛歯状をなして列設された尖状部を有する枠体フレームと、前記折り返した部分貫通した尖状部の先端に係止され、前記尖状部が前記網目から抜けないようにした係止部材とを備えた連結治具により前記グリッド材の連結を行うようにしたことを特徴とする。
【0010】
前記第2の発明において、前記細棒体は前記グリッド材の目合い寸法の倍数の間隔をあけて前記枠体フレームの棒部材に列設され、櫛歯状の尖状部を形成することが好ましい。
【0012】
【発明の実施の形態】
以下、本発明の地盤補強用グリッド材の連結構造の一実施の形態について、添付図面を参照して説明する。
図1は地盤補強用のグリッド材1の連結構造10を部分的に拡大して示した斜視図である。同図に示したように、本発明でもグリッド材1として所定強度を有する樹脂ストランド2を格子状に所定の目合いで編んで樹脂コーティングした公知のジオテキスタイルが使用されている。本実施の形態では、高強度ビニロン繊維を集束したストランド2を20mm×20mm目合いの格子状に成形し、表面を樹脂コーティングしたグリッド材1の連結構造10について説明する。この連結構造10ではグリッド材1の端部1aを折り返すようにして連結するための連結治具20が使用されている。この連結治具20は図示したようにグリッド材1の幅方向に延在する細長い□形状の枠体を、棒状の中央仕切材23で2箇所のグリッド材挿通スリット24a、24bに仕切った金属製の枠体フレーム21とストッパ22(後述)とからなる。枠体フレーム21の長さは1ロールのグリッド材1の幅よりわずかに大きく設定されている。さらに、図示したように折り返して連結されたグリッド材1の連結が解けないようにするためにストッパ22が袋状に折り返されたグリッド材1内に挿入されている。ストッパ22は全長が連結治具20の長さに等しい棒材で、本実施の形態では表面に凹凸のある異形鉄筋が使用されている。
【0013】
ここで、連結治具20によるグリッド材1の連結方法について、図3(a)、(b)を参照して説明する。
2枚のグリッド材1の端部1aをロール長手方向に連結するには、2枚のグリッド材1の端部1aを全幅にわたって重ねるように揃えて折り返し、図3(a)に示したように枠体フレーム21の一方のグリッド材挿通スリット24aに折り返した部分1bを挿通し、さらに中央仕切材23で折り返すようにして他方のグリッド材挿通スリット24bに挿通する。これと同時に図3(b)に示したように、袋状になった折り返し部分1bに棒状のストッパ22を挿入し、折り返し部分1bがグリッド材挿通スリット24bから抜けないようにする。これにより図3(b)に示したように矢印方向にグリッド材1に引張力が作用した場合にもグリッド材1の連結が解けないようにすることができる。
【0014】
図2は図1に示した枠体フレーム21の変形例を示したものである。この枠体フレーム21では側方部材が切り取られ、その代わりに枠体フレーム21の側部21aを覆うキャップ28が取り付けられるようになっている。枠体フレーム21をこのような形状とすることにより、2枚を重ねて折り返し、折り返し部分1bを全幅にわたってグリッド挿通スリット24a、24b(図1参照)に差し込む代わりに、折り返し部分の袋状部にストッパ(図示せず)を挟み、中央仕切材23でグリッド材挿通スリット24a、24bにグリッド材が位置するように側方から枠体フレーム21を挿通し、キャップ28を被せるだけで簡単に連結作業を行える。
【0015】
図3(c)は枠体フレーム21の各部材の断面形状を四角形状とした例を示している。このように断面形状を角形とすることにより枠体フレーム21と折り返されたグリッド材1との摩擦を大きくすることができる。これにより、同図に示したように中央仕切材23を介して2枚のグリッド材1の端部1aを重ね合わせて挿通させただけも十分な表面摩擦が得られ、グリッド材1に引張力が作用しても十分な引張強度を発揮することができる。
【0016】
図3(d)は図1で枠体フレーム21を構成した棒部材31の一方にグリッド材1の目合いに合ったピッチで細棒体33,33…が櫛歯状をなすように列設された尖状部32を形成し、この尖状部32の各細棒体33の先端を折り返したグリッド材1の網目に貫通させ、さらにこの状態から尖状部32が引き抜けないようにその先端を係止部材35で係止するようにした連結構造10を模式的に示したものである。この枠体フレーム21では中央仕切材23は枠体フレーム21の両端を構成する棒部材31と係止部材35と(図3(d),図4,図5参照)に対して図示した断面において1列にならないようにずらして配置されている。このとき棒部材31と中央仕切材23とは図示しない長手方向の端部が連結されていてもよいし、図2に示したようにキャップ28を取り付けることにより中央仕切材23の端部と棒部材31の端部とを一体化する構造としてもよい。図3(e)は図1,図2に示した枠体フレーム21の変形例によってグリッド材1を係止するようにした連結構造10の断面を模式的に示したものである。同図に示したように、枠体フレーム21は中央仕切材23がなく、2本の枠体フレーム21間を挿通スリット24cとしている。したがって、図1の場合と同様に、2枚のグリッド材1の端部1aを全幅にわたって重ねるように揃えて折り返し挿通スリット24cに折り返した部分1bを挿通し、さらに袋状になった折り返し部分1bに棒状のストッパ22を挿入し、折り返し部分1bがグリッド材挿通スリット24bから抜けないようにすることができる。この変形例は部材がコンパクトであり、連結作業も簡素化できる。なお、部材強度、変形抵抗性の点からこの変形例は、グリッド材1にかかる引張力が比較的小さいときに適用することが好ましい。
【0017】
以下、図3(d)で説明した棒部材31に形成された櫛歯形状に細棒体33が列設された尖状部32と、尖状部32の先端に係止される係止部材35の各種の実施の形態について図4〜図8を参照して説明する。図4には丸鋼材からなる棒部材31の側面にグリッド材1の目合い寸法の倍数寸法に相当する間隔で細棒体33が櫛歯状に列設され、形成された尖状部32を有する枠体フレーム21からなる連結治具20が示されている。また、細棒体33の先端には円錐状突起34が固着されている。尖状部32と同じ間隔で切欠部36が形成された細長い板状の係止部材35が併せて示されている。この板状の係止部材35の切欠部36をグリッド材1の網目を貫通した尖状部32の細棒体33に係止させて、尖状部32がグリッド材1の網目から引き抜けないようにしている。
【0018】
図5には図4に示した円錐状突起34に代えて球状突起37が形成された尖状部32が示されている。また、この尖状部32の球状突起37が係止される係止部材35として樹脂製のパイプが示されている。このパイプ35には長手方向にスリット38が形成されており、このスリット38に細棒体33が挟まれ、球状突起37がパイプ35内に収容され、尖状部32がグリッド材1の網目から抜けないようになっている。
【0019】
図6は図5までの実施の形態と異なり、平板を加工して棒部材41自体が櫛歯形状をなすようにした実施の形態を示したものである。この棒部材41は形鋼を折曲加工するとともに、グリッド材1の目合い寸法に合わせて所定間隔をあけて切欠部42を形成してある。また、下面に設けられた折曲フック43により係止部を構成し、同様の折曲フック44が形成された係止部材45と係合させることにより中央仕切材23に巻き付けるようにして連結された2枚のグリッド材1の連結が解かれないようになっている。
【0020】
図7は図8(a)に示したように棒部材31と係止部材35とをボルト接合するようにした実施の形態を示したものである。この場合には細棒体33にはネジ33aが切られており、係止部材35には細棒体33が挿通可能な貫通孔46が形成されている。図8(b)に示したように連結するグリッド材1の端部1aを束ねた状態で中央仕切材23に巻き付け、細棒体33のネジ33aを係止部材35の貫通孔46に挿通してナット47を締め込むことにより図7のように端部1aを折り返した状態でグリッド材1を連結することができる。
【0021】
図4〜図7に示した棒部材31、41、中央仕切材23、係止部材35,45の材質としては中実鋼材の他、所定強度が得られるならばパイプ材や樹脂成形品を使用することができる。また、枠体フレームは全長が長く幅が狭い。このためグリッド材に作用した引張力により変形するおそれがある場合には、必要に応じてフレームの中間位置に棒部材、中央仕切材、係止部材を一体的に束ね、変形を抑える補強バンドを設けることも好ましい。
【図面の簡単な説明】
【図1】本発明による地盤補強用グリッド材の連結構造の一実施の形態を示した部分斜視図。
【図2】図1に示した地盤補強用グリッド材の連結構造の変形例を示した斜視図。
【図3】グリッド材の連結状態を模式的に示した連結治具の断面図。
【図4】尖状部を有する連結治具の実施の形態を示した部分斜視図。
【図5】尖状部を有する連結治具の他の実施の形態を示した部分斜視図。
【図6】尖状部を有する連結治具の他の実施の形態を示した部分斜視図。
【図7】尖状部を有する連結治具の他の実施の形態を示した部分斜視図。
【図8】図7に示した連結治具の連結状態を模式的に示した連結治具の断面図。
【図9】グリッド材を用いた補強盛土の一例を示した概略斜視図。
【図10】従来のグリッド材の連結治具の一例を示した部分斜視図。
【図11】従来のグリッド材の連結治具の他の例を示した部分正面図。
【符号の説明】
1 グリッド材
10 連結構造
20 連結治具
21 枠体フレーム
22 ストッパ
23 中央仕切材
24a,24b,24c 挿通スリット
31,41 棒部材
32 尖状部
35,45 係止部材
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ground reinforcement grid material connection structure, and more particularly, to a ground reinforcement grid material connection structure that enables easy connection of grid materials.
[0002]
[Prior art]
In recent years, ground reinforcement by a resin composite material called geotextile or geosynthetics has been performed. As an example, a reinforced embankment method as shown in FIG. 9 is also constructed. In this reinforcing embankment method, the reinforcing material is constructed by alternately laminating grid materials 51 that are resin-molded in a lattice network shape with the soil, and constructing the reinforcing embankment. The grid material 51 used in this type of reinforced embankment method is carried into the site in a roll-shaped packing form having a predetermined width (for example, 2 m) and a length of about 50 m so as to satisfy the external stability of the embankment. It is cut into a design length (laying length) longer than the slip surface S on the back of the embankment, and is constructed so that each layer is laid side by side in the width direction. At this time, the grid member 51 crossing the sliding surface S is designed so as to obtain a strength capable of resisting a shearing force and a pulling force generated by the soil block sliding. Moreover, since there exists a possibility that the intensity | strength as a reinforcing material may fall, the design which the grid material 51 does not connect in the sliding surface S was performed. For this reason, when one roll is cut into a predetermined length and used, a half-length roll portion that cannot secure the design length has been processed as a loss.
[0003]
However, in consideration of the economics of the material, if the tensile strength equivalent to the grid material can be secured even in the portion where the grid material is connected, it can be used by connecting the shortage to the half length, Loss generation can be minimized.
[0004]
From this point of view, grid material connection structures 50 and 55 as shown in FIGS. 10 and 11 have already been proposed. FIG. 10 is an explanatory view showing an example of a connection structure 50 of a conventional grid member 51 (see Japanese Patent Laid-Open No. 9-228372). In the connection structure 50 of the grid members 51, the ends 52a of the grid members 51 to be connected are twisted in a spiral shape so that the strands 52 corresponding to the warp yarns of the respective grid members 51 are entangled over a predetermined range. Further, a connecting rod 54 such as a reinforcing bar is inserted into the spiral twisted portion 53 to integrate the connecting portions.
[0005]
Further, in the connection structure 55 of the grid members 56 shown in FIG. 11, the connection of the grid members 56 is achieved by knitting the connection ropes 57 in a loop shape along the meshes of the overlapped grid members 56, 56. ing. At this time, the strength and durability of the connecting rope 57 are selected to be equal to or higher than those of the grid material 56 so that the connecting portion 58 does not become a weak portion.
[0006]
[Problems to be solved by the invention]
In the grid material connection structure shown above, the method of connecting the strands and meshing portions of the grid material to be connected one by one is adopted, so that the connection work takes time and the entire grid material laying operation is performed. The work efficiency is reduced, and the economic advantage of connecting and using grid materials cannot be utilized.
[0007]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a ground reinforcing grid material connection structure that solves the above-described problems of the prior art and can quickly connect the grid materials.
[0008]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention is provided so as to form a grid material insertion slit that is attached along the width direction of the grid material, and that inserts a portion that is turned back by aligning the ends of the connected grid material. The grid is provided by a connecting jig including a frame body provided with a material and a stopper attached to a folded portion of the grid material in the vicinity of the partition material so that the folded portion is not removed from the insertion slit. It is characterized by connecting the materials.
[0009]
As a second aspect of the invention, the thin rods that are attached along the width direction of the grid material and penetrate the mesh of the part of the grid material that is connected and turned up are arranged at a predetermined pitch in the longitudinal direction of the bar member. A frame that has pointed portions arranged in a comb-like shape and a frame that is locked to the tip of the pointed portion that penetrates the folded portion so that the pointed portion does not come off the mesh. The grid material is connected by a connecting jig provided with a stop member.
[0010]
In the second aspect of the invention, the thin rods may be arranged on the rod members of the frame body at intervals of a multiple of the grid dimensions of the grid material to form comb-like pointed portions. preferable.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a connection structure for a ground reinforcing grid member of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a partially enlarged perspective view showing a connection structure 10 of a grid material 1 for ground reinforcement. As shown in the figure, also in the present invention, a known geotextile in which resin strands 2 having a predetermined strength are knitted in a lattice shape with a predetermined mesh and resin-coated is used as the grid material 1. In the present embodiment, a connection structure 10 of a grid material 1 in which strands 2 in which high-strength vinylon fibers are bundled is formed into a grid shape having a mesh size of 20 mm × 20 mm and the surface is resin-coated will be described. In this connection structure 10, a connection jig 20 for connecting the end portions 1 a of the grid material 1 so as to be folded is used. This connecting jig 20 is made of metal in which an elongated □ -shaped frame extending in the width direction of the grid material 1 is partitioned into two grid material insertion slits 24a and 24b by a rod-shaped central partition material 23 as shown in the figure. Frame body 21 and stopper 22 (described later). The length of the frame body 21 is set slightly larger than the width of the grid material 1 of one roll. Further, as shown in the figure, a stopper 22 is inserted into the grid material 1 folded in a bag shape so that the grid material 1 folded and coupled can be uncoupled. The stopper 22 is a bar whose overall length is equal to the length of the connecting jig 20, and in this embodiment, a deformed reinforcing bar with an uneven surface is used.
[0013]
Here, the connection method of the grid material 1 by the connection jig 20 is demonstrated with reference to Fig.3 (a), (b).
In order to connect the end portions 1a of the two grid members 1 in the roll longitudinal direction, the end portions 1a of the two grid members 1 are folded back so as to overlap over the entire width, as shown in FIG. The portion 1b that is folded back is inserted into one grid material insertion slit 24a of the frame 21 and is further inserted through the other grid material insertion slit 24b so as to be folded back by the central partition member 23. At the same time, as shown in FIG. 3B, a bar-like stopper 22 is inserted into the folded portion 1b in the bag shape so that the folded portion 1b does not come out of the grid material insertion slit 24b. As a result, as shown in FIG. 3B, even when a tensile force is applied to the grid material 1 in the direction of the arrow, the connection of the grid material 1 can be prevented from being broken.
[0014]
FIG. 2 shows a modification of the frame body 21 shown in FIG. In this frame body 21, side members are cut out, and a cap 28 that covers the side portion 21a of the frame body frame 21 is attached instead. By making the frame 21 into such a shape, the two sheets are overlapped and folded, and instead of inserting the folded portion 1b into the grid insertion slits 24a and 24b (see FIG. 1) over the entire width, Simply insert the frame body frame 21 from the side so that the grid material is positioned in the grid material insertion slits 24a, 24b with the center partition material 23, and put the cap 28 on the stopper (not shown). Can be done.
[0015]
FIG. 3C shows an example in which the cross-sectional shape of each member of the frame body 21 is a square shape. Thus, the friction between the frame body frame 21 and the folded grid material 1 can be increased by making the cross-sectional shape square. As a result, sufficient surface friction can be obtained even if the end portions 1a of the two grid members 1 are overlapped and inserted through the central partition member 23 as shown in FIG. Even if it acts, sufficient tensile strength can be exhibited.
[0016]
3 (d) is arranged in such a manner that the thin rod members 33, 33... Are arranged in one of the rod members 31 constituting the frame frame 21 in FIG. The tip portion 32 is formed, the tip of each thin rod 33 of the tip portion 32 is passed through the mesh of the folded grid material 1, and the tip portion 32 is prevented from being pulled out from this state. 1 schematically shows a connection structure 10 whose tip is locked by a locking member 35. In this frame body 21, the central partition member 23 is shown in the cross section shown with respect to the rod member 31 and the locking member 35 (see FIGS. 3D, 4 and 5) that constitute both ends of the frame body 21 . They are arranged so as not to be in one row. At this time, the rod member 31 and the central partition member 23 may be connected at the end portions in the longitudinal direction ( not shown), or by attaching the cap 28 as shown in FIG. It is good also as a structure which integrates the edge part of the member 31. FIG. FIG. 3 (e) schematically shows a cross section of the connecting structure 10 in which the grid member 1 is locked by a modification of the frame body frame 21 shown in FIGS. As shown in the figure, the frame body 21 does not have the central partition member 23, and the space between the two frame bodies 21 is an insertion slit 24c. Accordingly, as in the case of FIG. 1, the end portions 1a of the two grid members 1 are aligned so as to overlap over the entire width, and the folded portion 1b is inserted into the folded insertion slit 24c, and the folded portion 1b is further formed into a bag shape. A bar-shaped stopper 22 can be inserted into the fold-back portion 1b so that the folded portion 1b does not come out of the grid material insertion slit 24b. In this modification, the members are compact, and the connection work can be simplified. It should be noted that this modification is preferably applied when the tensile force applied to the grid material 1 is relatively small in terms of member strength and deformation resistance.
[0017]
Hereinafter, the pointed portion 32 in which the thin rod bodies 33 are arranged in a comb-tooth shape formed in the rod member 31 described with reference to FIG. 3D, and the locking member to be locked to the tip of the pointed portion 32 Various embodiments of 35 will be described with reference to FIGS. In FIG. 4, thin rods 33 are arranged in a comb-like shape on the side surface of a rod member 31 made of a round steel material at intervals corresponding to multiples of the mesh size of the grid material 1, and the formed pointed portions 32 are formed. A connecting jig 20 comprising a frame body frame 21 is shown. A conical protrusion 34 is fixed to the tip of the thin rod body 33. Also shown is an elongated plate-like locking member 35 having notches 36 formed at the same intervals as the pointed portions 32. The notch portion 36 of the plate-like locking member 35 is locked to the thin rod body 33 of the pointed portion 32 penetrating the mesh of the grid material 1 so that the pointed portion 32 cannot be pulled out from the mesh of the grid material 1. I am doing so.
[0018]
FIG. 5 shows a pointed portion 32 in which a spherical protrusion 37 is formed instead of the conical protrusion 34 shown in FIG. Further, a resin pipe is shown as the locking member 35 to which the spherical protrusion 37 of the pointed portion 32 is locked. A slit 38 is formed in the pipe 35 in the longitudinal direction, a thin rod 33 is sandwiched between the slits 38, a spherical protrusion 37 is accommodated in the pipe 35, and the pointed portion 32 is formed from the mesh of the grid material 1. It is designed not to come out.
[0019]
FIG. 6 shows an embodiment in which a flat plate is processed so that the bar member 41 itself has a comb-teeth shape unlike the embodiment up to FIG. The bar member 41 is formed by bending a shaped steel and has a notch 42 formed at a predetermined interval in accordance with the mesh size of the grid material 1. Further, a locking portion is formed by a folding hook 43 provided on the lower surface, and is connected so as to be wound around the central partition member 23 by engaging with a locking member 45 on which a similar folding hook 44 is formed. The connection of the two grid members 1 is not broken.
[0020]
FIG. 7 shows an embodiment in which the rod member 31 and the locking member 35 are bolted as shown in FIG. In this case, a screw 33 a is cut in the thin rod body 33, and a through hole 46 through which the thin rod body 33 can be inserted is formed in the locking member 35. As shown in FIG. 8 (b), the ends 1 a of the grid members 1 to be connected are wound around the central partition member 23 in a bundled state, and the screw 33 a of the thin rod 33 is inserted into the through hole 46 of the locking member 35. By tightening the nut 47, the grid member 1 can be connected in a state where the end 1a is folded back as shown in FIG.
[0021]
As a material of the rod members 31, 41, the central partition member 23, and the locking members 35, 45 shown in FIGS. 4 to 7, a solid steel material or a pipe material or a resin molded product is used if a predetermined strength is obtained. can do. The frame body has a long overall length and a narrow width. For this reason, if there is a risk of deformation due to the tensile force acting on the grid material, a reinforcing band that suppresses deformation is bundled integrally at the intermediate position of the frame as needed by bundling the rod member, central partition material, and locking member. It is also preferable to provide it.
[Brief description of the drawings]
FIG. 1 is a partial perspective view showing one embodiment of a ground reinforcing grid connecting structure according to the present invention.
FIG. 2 is a perspective view showing a modification of the connection structure of the ground reinforcing grid material shown in FIG. 1;
FIG. 3 is a cross-sectional view of a connection jig schematically showing a connection state of grid materials.
FIG. 4 is a partial perspective view showing an embodiment of a connecting jig having a pointed portion.
FIG. 5 is a partial perspective view showing another embodiment of a connecting jig having a pointed portion.
FIG. 6 is a partial perspective view showing another embodiment of a connecting jig having a pointed portion.
FIG. 7 is a partial perspective view showing another embodiment of a connecting jig having a pointed portion.
8 is a cross-sectional view of the connecting jig schematically showing the connection state of the connecting jig shown in FIG. 7;
FIG. 9 is a schematic perspective view showing an example of a reinforced embankment using a grid material.
FIG. 10 is a partial perspective view showing an example of a conventional grid material connecting jig.
FIG. 11 is a partial front view showing another example of a conventional grid material connecting jig.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Grid material 10 Connection structure 20 Connection jig 21 Frame frame 22 Stopper 23 Center partition material 24a, 24b, 24c Insertion slit 31, 41 Bar member 32 Pointed part 35, 45 Locking member

Claims (3)

グリッド材の幅方向に沿って取り付けられ、連結されるグリッド材の端部を揃えて折り返した部分を挿通させるグリッド材挿通スリットを形成するように仕切材が設けられた枠体フレームと、前記仕切材近傍の前記グリッド材の折り返し部分に取り付けられ、前記挿通スリットから前記折り返した部分が抜けないようにしたストッパとを備えた連結治具により前記グリッド材の連結を行うようにしたことを特徴とする地盤補強用グリッド材の連結構造。  A frame body frame provided with a partition material so as to form a grid material insertion slit that is attached along the width direction of the grid material, and that inserts a portion of the grid material to be connected by aligning the ends of the grid material, and the partition The grid material is connected by a connecting jig provided with a stopper that is attached to the folded portion of the grid material in the vicinity of the material and prevents the folded portion from being removed from the insertion slit. Connecting structure of grid material for ground reinforcement. グリッド材の幅方向に沿って取り付けられ、連結されるグリッド材の端部を揃えて折り返した部分の網目を貫通する細棒体が、棒部材の長手方向に所定ピッチで櫛歯状をなして列設された尖状部を有する枠体フレームと、前記折り返した部分貫通した尖状部の先端に係止され、前記尖状部が前記網目から抜けないようにした係止部材とを備えた連結治具により前記グリッド材の連結を行うようにしたことを特徴とする地盤補強用グリッド材の連結構造。The thin rod body that is attached along the width direction of the grid material and penetrates the mesh of the part of the grid material that is connected and folded back, forms a comb-like shape at a predetermined pitch in the longitudinal direction of the rod member. and the frame frame having a pointed section that is column set, is locked to the front end of the folded portion penetrating pointed section, and a locking member for the pointed portion is to prevent escape from the mesh A ground reinforcing grid material connection structure, wherein the grid material is connected by a connecting jig. 前記細棒体は、前記グリッド材の目合い寸法の倍数の間隔をあけて、前記棒部材の長手方向に列設されたことを特徴とする請求項2記載の地盤補強用グリッド材の連結構造。 3. The ground reinforcing grid member connection structure according to claim 2 , wherein the thin rod members are arranged in the longitudinal direction of the rod member at intervals of multiples of the mesh size of the grid member. .
JP20588598A 1998-07-06 1998-07-06 Connecting structure of grid material for ground reinforcement Expired - Lifetime JP4022321B2 (en)

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