JPH05295748A - Sheathing method - Google Patents

Abstract

PURPOSE:To eliminate generation of residual earth from construction works by inserting each wall unit in piles fixed to a slope continuously at a certain spacing, piling such wall units one over another, and supporting the wall formed continuously by these wall units on a slope using anchors. CONSTITUTION:Each H-steel 3 is inserted in a circular hole provided in the lower part of a slope and fixed with concrete mortar as fillar 4, and such H- steels 3 are erected upright at a certain spacing. Then sheathing wall panels 5 are piled while the H-steels 3 are inserted through the inner holes provided in the wall panels, and fixed with mortar 4. When these panels 5 are piled in stages as specified, each anchor 8 is inserted in a circular hole generated by putting together semi-circular arc notches formed at the end faces of the panels 5, detained with the head part 8a, and coupled with each of the underground fixing members 9 installed under the slope surface and positioned oppositely through respective anchor tightening member 10. In the same manner, an additional panel 5 is put on one step over and supported on the slope, and earth fill is made till the top of the sheathing wall A formed by these panels 5, and thus a flat land B is provided.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、急勾配の斜面において
道路築造や宅地造成などで、必要とする用地の確保や、
地滑り地における地滑りを抑止するための土留め工法に
関する。BACKGROUND OF THE INVENTION The present invention is to secure necessary land for road construction and residential land construction on a steep slope.
A soil retaining method to prevent landslides in landslide areas.

【０００２】[0002]

【従来の技術】土留め工法としては、従来、斜面の上方
から切土を行う方法や、斜面の下方に重力式擁壁、逆Ｔ
型擁壁、Ｌ型擁壁などのコンクリート構造物を構築し、
これら擁壁の背面に埋土する方法などが知られている。2. Description of the Related Art Conventional soil retaining methods include a method of cutting soil from above the slope, a gravity retaining wall below the slope, and a reverse T
Build concrete structures such as type retaining wall, L type retaining wall,
It is known to fill the back of these retaining walls with soil.

【０００３】[0003]

【発明が解決しようとする課題】上記の前者工法におい
ては、切土用地が拡大し切土による裸地面の保護が必要
になると共に、更に、上方からの崩壊のおそれがある。
したがって、裸地面保護工や崩壊対策工に費用がかか
る。In the former method described above, the site for cutting is expanded, the bare ground must be protected by cutting, and there is a possibility of collapse from above.
Therefore, the bare ground protection work and collapse prevention work are expensive.

【０００４】また、後者工法においては、安定した構造
物を構築するのに、基底部に所定の地耐力のある地盤が
必要である。その地耐力を得るには、表土の軟弱地層を
排除し、所定の地層まで切土が必要となる。また、構造
物が高いほど、基底部の面積も広く必要となり、その切
土も多くなる。また、切土による崩壊対策工が必要とな
る。Further, in the latter construction method, a ground having a predetermined bearing capacity is required at the base in order to construct a stable structure. In order to obtain the soil bearing capacity, it is necessary to remove the soft soil layer of the topsoil and cut the soil to a predetermined layer. In addition, the higher the structure, the larger the area of the base portion required, and the greater the amount of cut soil. In addition, it is necessary to take measures to prevent collapse due to cut soil.

【０００５】上記両工法とも、大規模な切土による多く
の建設残土を発生させ、その投棄処分を行うための用地
確保や運搬が問題となる。Both of the above-mentioned construction methods generate a large amount of construction soil due to large-scale cut soil, and there is a problem in securing land for carrying out the disposal and transportation.

【０００６】本発明は、建設残土を発生させない土留め
工法を提供することを目的としている。It is an object of the present invention to provide a soil retaining method which does not generate residual construction soil.

【０００７】[0007]

【課題を解決するための手段】本発明によれば、所定間
隔に連続して斜面に杭体を固定し、固定した杭体に壁体
を挿入して積み重ね、積み重ねた壁体により連続した壁
体をアンカー体により斜面に支持して土留め壁を築造す
ることを特徴としている。According to the present invention, a pile is fixed to an inclined surface continuously at a predetermined interval, a wall is inserted into the fixed pile, and the pile is stacked. The feature is that the body is supported on the slope by the anchor body and the earth retaining wall is built.

【０００８】上記杭体には、Ｈ型鋼、Ｉ型鋼、鋼管を用
いるのが好ましい。It is preferable to use H-shaped steel, I-shaped steel, and steel pipe for the pile body.

【０００９】また、壁体には、杭体を挿通する円孔を形
成し、その円孔は、下方ほど大きくなる楕円形に形成
し、壁体の外形は、同一形状に形成するのが好ましい。Further, it is preferable that the wall body is formed with a circular hole through which the pile body is inserted, and the circular hole is formed into an elliptical shape which becomes larger toward the lower side, and the outer shape of the wall body is formed into the same shape. ..

【００１０】また、アンカー体は、壁体の対向する端面
に形成した半円形の切欠部を組合せて得られる円孔に挿
通して壁体を係止するアンカー材、斜面側のアンカー地
中定着材及び両材の緊結材で構成するのが好ましい。Further, the anchor body is an anchor material for locking the wall body by inserting it into a circular hole obtained by combining semicircular notches formed on opposite end surfaces of the wall body, and anchor anchoring on the slope side. It is preferable to be composed of a material and a binding material of both materials.

【００１１】[0011]

【作用】本発明においては、土留め壁を築造したのち、
土留め壁の背面に埋土して平地を造成するので建設残土
の発生は、一切発生しない。In the present invention, after building the earth retaining wall,
Since the back ground of the earth retaining wall is buried to form a flat land, no construction soil will be generated.

【００１２】[0012]

【実施例】以下図面を参照して本発明の実施態様を説明
する。Embodiments of the present invention will be described below with reference to the drawings.

【００１３】先ず、図１及び図２に示すように、斜面１
の下部に、円孔２を削孔し、その円孔２に杭体すなわち
Ｈ型鋼３を挿入して間詰めコンクリートモルタル４で固
定し、このＨ型鋼３を所定間隔Ｄ（図６）で立設する。
なお、杭体は、Ｈ型鋼３に限られるものではなく、Ｉ型
鋼や鋼管を用いることができる。First, as shown in FIGS. 1 and 2, the slope 1
A circular hole 2 is drilled in the lower part of the, a pile body, that is, an H-shaped steel 3 is inserted into the circular hole 2 and fixed with a filling concrete mortar 4, and the H-shaped steel 3 is erected at a predetermined interval D (Fig. 6). Set up.
The pile body is not limited to the H-section steel 3, and I-section steel or steel pipe can be used.

【００１４】次いで、図３ないし図７に示すように、壁
体すなわちコンクリート製の土留め壁パネル５を、その
内孔６にＨ型鋼３を挿通させて詰み重ね、間詰めコンク
リートモルタル４で固定する。Next, as shown in FIGS. 3 to 7, a wall body, that is, an earth retaining wall panel 5 made of concrete, is inserted into the inner hole 6 of the H-shaped steel 3 and piled up, and fixed with a filling concrete mortar 4. To do.

【００１５】この土留め壁パネル５は図８及び図９に示
すように、内孔６の形状は楕円形であって、上方の内孔
６ａより下方の内孔６ｂの方が大きい楕円形に形成さ
れ、パネル５の形状は、同一形状に形成されている。な
お、パネル５はこれに限られるものではなく、図１０に
示す土留め壁パネル５Ａのように、外形を二つの円弧で
形成したものでもよい。As shown in FIGS. 8 and 9, the earth retaining wall panel 5 has an inner hole 6 having an elliptical shape, and an inner hole 6b below is larger than an inner hole 6b. The panels 5 are formed to have the same shape. It should be noted that the panel 5 is not limited to this, and the outer shape may be formed by two arcs like the earth retaining wall panel 5A shown in FIG.

【００１６】このようにして所定段（図示の例では３
段）を詰み重ねたら、各パネル５の両端面に形成されて
いる半円弧の切欠部を合せて得られた円孔７にアンカー
材８を挿通して頭部８ａで係止し、斜面１の地中に対向
して固定したアンカー地中定着材９にアンカー緊結材１
０を介して連結し、パネル５を斜面に支持する。同様に
して、パネル５を更に一段詰み上げて斜面に支持し、最
後に、パネル５により得られた土留め壁Ａの頂部まで埋
土して平地Ｂを造成する。したがって、建設残土は、一
切発生しない。In this way, a predetermined number of stages (3 in the illustrated example)
Step), the anchor material 8 is inserted into the circular hole 7 obtained by aligning the notched portions of the semicircular arcs formed on both end surfaces of each panel 5 and locked by the head portion 8a. Anchor binding material 1 to anchor underground fixing material 9 fixed facing the ground
0 to connect the panel 5 to the slope. In the same manner, the panel 5 is further stuffed up one stage and supported on the slope, and finally, the ground is filled up to the top of the earth retaining wall A obtained by the panel 5 to form the plain B. Therefore, no construction surplus soil will be generated.

【００１７】上記土留め壁Ａにおいて、パネル５の内孔
６は、下方ほど大きい楕円形に形成されているので、間
詰めコンクリートモルタル４のパネル５に対する付着
性、固定性が良好で、自重や上載荷重によりパネル５が
下方に移動するのが防止される。また、パネル５に偏荷
重がかかっても、パネル５がＨ型鋼３の回りに回動する
のが防止される。In the earth retaining wall A, the inner hole 6 of the panel 5 is formed in an elliptical shape that is larger toward the bottom, so that the adhesiveness and fixing property of the filling concrete mortar 4 to the panel 5 are good, and the self-weight and It is possible to prevent the panel 5 from moving downward due to the top load. Further, even if an unbalanced load is applied to the panel 5, the panel 5 is prevented from rotating around the H-shaped steel 3.

【００１８】[0018]

【発明の効果】以上説明したように本発明によれば、建
設残土の発生を一切なくすことができ、非常に有効であ
る。As described above, according to the present invention, the generation of construction residual soil can be completely eliminated, which is very effective.

【図面の簡単な説明】[Brief description of drawings]

【図１】斜面にＨ型鋼を固定した状態を示す垂直断面
図。FIG. 1 is a vertical cross-sectional view showing a state where H-shaped steel is fixed to a slope.

【図２】図１のＡ−Ａ矢視断面図。FIG. 2 is a sectional view taken along the line AA of FIG.

【図３】連続壁を示す上面図。FIG. 3 is a top view showing a continuous wall.

【図４】図３のＢ−Ｂ矢視断面図。FIG. 4 is a sectional view taken along the line BB of FIG.

【図５】図３のＣ−Ｃ矢視断面図。5 is a sectional view taken along the line CC of FIG.

【図６】図３のＤ−Ｄ矢視断面図。6 is a sectional view taken along the line DD of FIG.

【図７】図４の正面図。FIG. 7 is a front view of FIG.

【図８】図６のＥ−Ｅ矢視断面図。8 is a cross-sectional view taken along the line EE of FIG.

【図９】図６のＦ−Ｆ矢視断面図。9 is a sectional view taken along the line FF of FIG.

【図１０】土留め壁パネルの別の例を示す図８に相当す
る図面。FIG. 10 is a drawing corresponding to FIG. 8 showing another example of the earth retaining wall panel.

【符号の説明】[Explanation of symbols]

Ａ・・・土留め壁 Ｂ・・・平地 １・・・斜面 ２・・・円孔 ３・・・Ｈ型鋼 ４・・・間詰めコンクリートモルタル ５、５Ａ・・・土留め壁パネル ６、６ａ、６ｂ・・・内孔 ７・・・円孔 ８・・・アンカー材 ８ａ・・・頭部 ９・・・アンカー地中定着材 １０・・・緊結材 A ... Earth retaining wall B ... Plain 1 ... Slope 2 ... Circular hole 3 ... H-shaped steel 4 ... Filled concrete mortar 5, 5A ... Earth retaining wall panel 6, 6a , 6b ... Inner hole 7 ... Circular hole 8 ... Anchor material 8a ... Head 9 ... Anchor underground fixing material 10 ... Bonding material

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 所定間隔に連続して斜面に杭体を固定
し、固定した杭体に壁体を挿入して積み重ね、積み重ね
た壁体により連続した壁体をアンカー体により斜面に支
持して土留め壁を築造することを特徴とする土留め工
法。1. A pile body is fixed to a slope continuously at a predetermined interval, a wall body is inserted into the fixed pile body and stacked, and a continuous wall body is supported by the stacked wall body on an slope by an anchor body. An earth retaining method characterized by building an earth retaining wall.