JP2555838B2 - Independent panel mountain retaining method - Google Patents
Independent panel mountain retaining methodInfo
- Publication number
- JP2555838B2 JP2555838B2 JP4181066A JP18106692A JP2555838B2 JP 2555838 B2 JP2555838 B2 JP 2555838B2 JP 4181066 A JP4181066 A JP 4181066A JP 18106692 A JP18106692 A JP 18106692A JP 2555838 B2 JP2555838 B2 JP 2555838B2
- Authority
- JP
- Japan
- Prior art keywords
- mountain retaining
- retaining panel
- panel
- soil
- root cutting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Bulkheads Adapted To Foundation Construction (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、地下一階程度の比較
的浅い根切り工事を簡易にし、かつ、地下躯体を容易に
構築できるようにした自立パネル山留め工法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-supporting panel mountain retaining method which simplifies a relatively shallow root cutting work on the ground floor and allows an underground structure to be easily constructed.
【０００２】[0002]
【従来の技術】従来、地下一階程度の比較的浅い根切り
工事においても、シートパイル工法やＳＭＷ工法等によ
り山留め壁を構築するのが一般的である。2. Description of the Related Art Conventionally, it has been common to construct a retaining wall by a sheet pile method, an SMW method, etc. even in a relatively shallow root cutting work on the first basement level.
【０００３】[0003]
【発明が解決しようとする課題】しかし、これらの山留
め工法は、いずれの場合においても、山留め壁とは別途
に本設壁が施工されるため、全体の壁厚が相当厚くなっ
てしまい、このため、地下部分の床面積が大幅に制約さ
れてしまうという欠点があった。また、結果的に壁を二
重に施工することとなるため工期の長期化も免れないと
いう欠点もある。この発明は、このような前記従来の課
題を解決するために提案されたもので、地下一階程度の
比較的浅い根切り工事を簡易に行うことができ、かつ、
地下躯体を短期間のうちに容易に構築できるようにした
自立パネル山留め工法を提供することを目的とする。However, in any of these methods, since the main wall is constructed separately from the mountain retaining wall, the whole wall thickness is considerably increased. Therefore, there is a drawback that the floor area of the underground part is significantly restricted. In addition, there is also a drawback that the construction period is unavoidable because the wall will be double constructed as a result. This invention has been proposed in order to solve the above-mentioned conventional problems, and can easily perform a relatively shallow root cutting work of about the first basement level, and
It is an object of the present invention to provide a self-supporting panel retaining method that enables an underground structure to be easily constructed in a short period of time.
【０００４】[0004]
【課題を解決するための手段】この発明に係る自立パネ
ル山留め工法は、（Ａ）根入れ部には普通強度のセメン
トミルクを、根切り部には低強度のセメントミルクを、
注入・攪拌しながら、ソイルセメント柱列孔を削孔する
工程、（Ｂ）下端部に支持杭を突設し、内側表面に養生
シートを貼着したプレキャストコンクリート製山留めパ
ネルを、ソイルセメントが固化しない間に前記ソイルセ
メント柱列孔内に建て込み、山留め壁を構築する工程、
（Ｃ）前記山留めパネル内側の地盤を根切りした根切り
部に前記山留めパネルを地下構造物の本設壁として地下
躯体を構築する工程、より構成される。The self-supporting panel mountain retaining method according to the present invention comprises: (A) a normal strength cement milk for the rooting portion and a low strength cement milk for the root cutting portion;
While pouring and stirring, drilling holes in the soil cement column, (B) Soil cement solidifies a precast concrete mountain retaining panel with a support pile protruding from the lower end and a curing sheet attached to the inner surface. Building in the soil cement pillar row hole while not doing, building a retaining wall,
(C) A step of constructing an underground structure by using the mountain retaining panel as a main wall of an underground structure at a root cutting portion inside the mountain retaining panel.
【０００５】上記（Ａ）工程はソイルセメント柱列孔を
削孔する通常の工法に従って行われるが、通常の工法と
異なる点は、この発明では、柱列孔の上部と下部とで注
入するセメントミルクの種類を変える点である。The above step (A) is carried out in accordance with a conventional method of drilling the soil cement column holes. However, the point different from the ordinary method is that in the present invention, the cement injected at the upper and lower portions of the column row holes is cemented. The point is to change the type of milk.
【０００６】柱列孔下部（根入れ部）では注入されたセ
メントミルクと掘削土との混合物であるソイルモルタル
が硬化して建て込まれた山留めパネルの下端部や支持杭
を十分に地盤で支持する必要があるので、普通強度以上
のセメントミルクが注入され、掘削土と攪拌混合され
る。これに対して、柱列孔上部（根切り部）では硬化し
たソイルモルタルを介して山留めパネルを地盤に支持さ
せる必要はなく、ソイルモルタルが高強度の硬化物とな
っていると、逆に根切り作業の妨げとなるので、掘削土
と攪拌混合したソイルモルタルが単に固まる程度の低強
度のセメントミルクが使用される。[0006] In the lower part of the pillar row hole (rooting part), the lower end of the mountain retaining panel and the support pile built by hardening the soil mortar, which is a mixture of the cement milk injected and the excavated soil, are sufficiently supported by the ground. Therefore, cement milk of normal strength or higher is injected and mixed with excavated soil by stirring. On the other hand, it is not necessary to support the mountain retaining panel on the ground through the hardened soil mortar in the upper part of the pillar row hole (root cutting part). If the soil mortar is a high-strength hardened product, the root will be reversed. Cement milk with low strength is used so that the soil mortar mixed with the excavated soil by stirring simply hardens because it interferes with the cutting work.
【０００７】上記（Ｂ）工程で建て込まれる山留めパネ
ルのコンクリート部分の内側表面には養生シートが貼着
されており、ソイルモルタルとの付着を切るとともにコ
ンクリートの内側表面を保護する。この養生シートの貼
着により根切り作業の能率は一層向上する。A curing sheet is attached to the inner surface of the concrete portion of the mountain retaining panel to be built in the step (B) so as to cut off adhesion with the soil mortar and protect the inner surface of the concrete. By sticking this curing sheet, the efficiency of root cutting work is further improved.
【０００８】[0008]
【実施例】図１（ａ），（ｂ），（ｃ），（ｄ）は、こ
の発明に係る自立パネル山留め工法の実施例を示す縦断
面図であり、図２はこの山留め工法に使用される山留め
パネルの平面図、図３はその正面図、図４はその側面図
をそれぞれ示したものである。1 (a), 1 (b), 1 (c) and 1 (d) are longitudinal sectional views showing an embodiment of a self-supporting panel earth retaining method according to the present invention, and FIG. 2 is used for this earth retaining method. FIG. 3 is a plan view of the mountain retaining panel, FIG. 3 is a front view thereof, and FIG. 4 is a side view thereof.
【０００９】図において、符号１は山留めパネル、２は
この山留めパネル１を補強するための鉄骨材、３はこの
山留めパネル１を地盤中に自立させるとともに山留め壁
の応力材となる支持杭、４は養生シートである。In the drawings, reference numeral 1 is a mountain retaining panel, 2 is an iron frame material for reinforcing the mountain retaining panel 1, 3 is a support pile which makes the mountain retaining panel 1 self-supporting in the ground and serves as a stress material for the mountain retaining wall, 4 Is a curing sheet.
【００１０】山留めパネル１にはプレキャストコンクリ
−ト板（高さ5m程度、幅１〜２m 程度、厚さ30cm程度）
が使用される。A precast concrete plate (height: about 5 m, width: about 1 to 2 m, thickness: about 30 cm) is used for the mountain retaining panel 1.
Is used.
【００１１】山留めパネル１には土圧等に対する曲げ強
度を高めるために上下方向に連続する柱部分１ａ，１ａ
が形成され、柱部分１ａ，１ａには補剛材としてＨ形鋼
からなる鉄骨材２が上下方向に連続して挿通され、か
つ、この鉄骨材２の下端部は山留めパネル１の下端部よ
り所定長さ突出され、支持杭３の継手部２ａを形成して
いる。The mountain retaining panel 1 has column portions 1a, 1a which are continuous in the vertical direction in order to enhance bending strength against earth pressure and the like.
Is formed, and the steel aggregate 2 made of H-shaped steel is continuously inserted through the pillar portions 1a, 1a in the vertical direction as a stiffening material, and the lower end of the iron aggregate 2 is lower than the lower end of the mountain retaining panel 1. The joint portion 2a of the support pile 3 is formed by protruding a predetermined length.
【００１２】支持杭３にはＨ形鋼が使用され、この支持
杭３は山留めパネル１の建て込みに際し、継手部２ａに
溶接若しくはボルト止めすることにより接合される。H-shaped steel is used for the support pile 3, and the support pile 3 is joined to the joint portion 2a by welding or bolting when the mountain retaining panel 1 is built.
【００１３】また、山留めパネル１の左右縁端部には隣
接するパネルを相互に接合するための継手部（図省略）
が形成され、内側面には山留めパネル１の内側表面とソ
イルモルタルとの付着を切り、表面の汚染を防止するビ
ニールシートなどの養生シート４が貼着されている。Further, a joint portion (not shown) for joining adjacent panels to each other at the left and right edge portions of the mountain retaining panel 1.
A protective sheet 4 such as a vinyl sheet is attached to the inner surface of the mountain retaining panel 1 to prevent the soil mortar from adhering to the inner surface of the mountain retaining panel 1 and prevent contamination of the surface.
【００１４】続いて、施工方法を順を追って説明する。Next, the construction method will be described step by step.
【００１５】 まず、アースオーガー工法などによっ
てセメントミルク５を注入しながら、ソイルセメント柱
列孔６を削孔する。（図１（ａ）参照）。First, the soil cement pillar row holes 6 are drilled while the cement milk 5 is being injected by the earth auger method or the like. (See FIG. 1 (a)).
【００１６】この際、削孔の深さにより、注入するセメ
ントミルク５の種類を切り替え、柱列孔上部６ｂの削孔
時には低強度のセメントミルクを注入し、柱列孔下部
（根入れ部）６ａの削孔時には普通強度以上のセメント
ミルクを注入する。At this time, the type of cement milk 5 to be injected is switched depending on the depth of the drilling hole, and when drilling the upper portion 6b of the pillar row hole, low-strength cement milk is injected to lower the pillar row hole (rooting portion). At the time of drilling 6a, cement milk of normal strength or higher is injected.
【００１７】 つぎに、ソイルセメント柱列孔６内の
ソイルモルタルが硬化する前に柱列孔６の中に山留めパ
ネル１を建て込む。（図１（ｂ）参照）。Next, the mountain retaining panel 1 is built in the column row hole 6 before the soil mortar in the soil cement column row hole 6 is cured. (See FIG. 1 (b)).
【００１８】この場合、山留めパネル１の下端部に取り
付けられた支持杭３は柱列孔下部６ａ内に奥深く建て込
み、山留めパネル１は柱列孔上部６ｂに建て込む。そし
て、柱列孔下部６ａ内のソイルモルタルが十分な強度を
発現するまで十分に養生する。そして、隣接する山留め
パネル１，１を一体的に接合する。In this case, the support pile 3 attached to the lower end portion of the mountain retaining panel 1 is deeply built in the lower portion 6a of the column row hole, and the mountain retaining panel 1 is built in the upper portion 6b of the column row hole. Then, the soil mortar in the lower portion 6a of the column row hole is sufficiently cured until it exhibits sufficient strength. Then, the adjacent mountain retaining panels 1, 1 are integrally joined.
【００１９】 つぎに、山留めパネル１の内側の地盤
を掘削し、根切り底まで掘り下げる。（図１（ｃ）参
照）。柱列孔上部６ｂのソイルモルタルを山留めパネル
１の表面が露出するまで削り取り、山留めパネル１に貼
着してある養生シート４を剥がす。さらに、隣接する山
留めパネル１の継手部の防水処理を入念に行う。Next, the ground inside the mountain retaining panel 1 is excavated and down to the root cutting bottom. (See FIG. 1 (c)). The soil mortar on the upper part 6b of the pillar row hole is scraped off until the surface of the mountain retaining panel 1 is exposed, and the curing sheet 4 attached to the mountain retaining panel 1 is peeled off. Further, the joint portion of the adjacent mountain retaining panel 1 is carefully treated to be waterproof.
【００２０】なお、山留めパネル１の内側の地盤を掘削
しても、山留めパネル１は支持杭３によって柱列孔下部
６ｂで支持されているので、内側に傾いたり、倒れたり
することはない。Even if the ground inside the mountain retaining panel 1 is excavated, the mountain retaining panel 1 is supported by the support piles 3 at the lower portion 6b of the column row hole, so that the mountain retaining panel 1 does not tilt or fall inward.
【００２１】また、柱列孔６を斜めに削孔することによ
り山留め壁の自重を利用したもたれ自立山留め壁とする
ことも可能である。（図１（ｄ）参照）。なお、この場
合にも山留めパネル１は鉛直に建て込むものとする。Further, it is possible to make a leaning self-supporting mountain retaining wall by utilizing the weight of the mountain retaining wall by obliquely drilling the column row holes 6. (See FIG. 1 (d)). Also in this case, the mountain retaining panel 1 is to be built vertically.
【００２２】 根切りが完全に終了したら、山留めパ
ネル１による連続壁を地下構造物の本設壁として、地下
構造物の構築に取り掛かる。When the root cutting is completely completed, the continuous wall by the mountain retaining panel 1 is used as the main wall of the underground structure to start the construction of the underground structure.
【００２３】[0023]
【発明の効果】この発明は以上説明したように構成され
ているため、以下に記載するような効果を有する。Since the present invention is configured as described above, it has the following effects.
【００２４】 従来の山留め工法には、必ず必要とさ
れた腹起こしや切り梁を一切必要としないため、根切り
工事がし易い。The conventional mountain retaining method does not require any angling or cutting beams, which are always required, and thus root cutting work is easy.
【００２５】 山留め壁を地下構造物の本設壁として
そのまま利用できるため、本来の本設壁の施工が全く不
要になり、工期の大幅な短縮化が可能である。Since the mountain retaining wall can be used as it is as the main wall of the underground structure, the construction of the original main wall is completely unnecessary, and the construction period can be greatly shortened.
【００２６】また、山留め壁による地下部分の床面積の
ロスが無くなるため、可能な限りの広い地下空間を確保
することができる。Further, since the loss of the floor area of the underground portion due to the mountain retaining wall is eliminated, it is possible to secure a wide underground space as much as possible.
【００２７】 根切り部のソイルモルタル硬化物は崩
壊し易く、かつ、山留めパネルに付着していないので、
根切り工事は一層容易になる。The hardened material of soil mortar at the root cutting portion is easily disintegrated and does not adhere to the mountain retaining panel.
Root cutting work becomes easier.
【図面の簡単な説明】[Brief description of drawings]
【図１】図（ａ），（ｂ），（ｃ），（ｄ）はこの発明
に係る山留め壁の施工方法を示すソイルセメント柱列孔
部分の縦断面図である。1 (a), (b), (c), and (d) are vertical cross-sectional views of a soil cement column row hole portion showing a method of constructing a mountain retaining wall according to the present invention.
【図２】山留めパネルの平面図である。FIG. 2 is a plan view of a mountain retaining panel.
【図３】図２に示す山留めパネルの正面図である。3 is a front view of the mountain retaining panel shown in FIG. 2. FIG.
【図４】図２に示す山留めパネルの側面図である。4 is a side view of the mountain retaining panel shown in FIG. 2. FIG.
１…山留めパネル、１ａ…山留めパネルの柱部分、２…
鉄骨材、２ａ…鉄骨材の継手部、３…支持杭、４…養生
シート、５…セメントミルク、６…ソイルセメント柱列
孔、６ａ…ソイルセメント柱列孔下部（根入れ部）、６
ｂ…ソイルセメント柱列孔上部（根切り部）。1 ... Mountain retaining panel, 1a ... Pillar portion of the mountain retaining panel, 2 ...
Steel aggregate, 2a ... Steel aggregate joint part, 3 ... Support pile, 4 ... Curing sheet, 5 ... Cement milk, 6 ... Soil cement column hole, 6a ... Soil cement column hole lower part (rooting part), 6
b ... Soil cement column row hole upper part (root cutting part).
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小松 淳 東京都調布市飛田給２丁目19番１号 鹿 島建設株式会社技術研究所内 (56)参考文献 特開 平２−266015（ＪＰ，Ａ) 特開 昭60−223526（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Atsushi Komatsu 2-19-1 Tobita-Su, Chofu-shi, Tokyo Kashima Construction Co., Ltd. Technical Research Institute (56) Reference JP-A-2-266015 (JP, A) Kaisho 60-223526 (JP, A)
Claims (1)
ミルクを、根切り部には低強度のセメントミルクを、注
入・攪拌しながら、ソイルセメント柱列孔を削孔する工
程、（Ｂ）下端部に支持杭を突設し、内側表面に養生シ
ートを貼着したプレキャストコンクリート製山留めパネ
ルを、ソイルセメントが固化しない間に前記ソイルセメ
ント柱列孔内に建て込む工程、（Ｃ）前記山留めパネル
内側の地盤を根切りした根切り部に前記山留めパネルを
地下構造物の本設壁として地下躯体を構築する工程、よ
りなる自立パネル山留め工法。1. A step of drilling a soil cement columnar hole while pouring and stirring (A) ordinary-strength cement milk in the rooting part and low-strength cement milk in the root cutting part, (B) a step of projecting a supporting pile at the lower end and building a precast concrete mountain retaining panel having a curing sheet attached to the inner surface in the soil cement column row hole while the soil cement does not solidify, (C) A self-supporting panel mountain retaining method comprising a step of constructing an underground skeleton by using the mountain retaining panel as a main wall of an underground structure in a root cutting portion inside the mountain retaining panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4181066A JP2555838B2 (en) | 1992-07-08 | 1992-07-08 | Independent panel mountain retaining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4181066A JP2555838B2 (en) | 1992-07-08 | 1992-07-08 | Independent panel mountain retaining method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0626034A JPH0626034A (en) | 1994-02-01 |
| JP2555838B2 true JP2555838B2 (en) | 1996-11-20 |
Family
ID=16094203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4181066A Expired - Lifetime JP2555838B2 (en) | 1992-07-08 | 1992-07-08 | Independent panel mountain retaining method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2555838B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61264050A (en) * | 1985-05-17 | 1986-11-21 | Ube Ind Ltd | Electrically-conductive polyimide film and production thereof |
| JP5513867B2 (en) * | 2009-12-14 | 2014-06-04 | 戸田建設株式会社 | Construction method of underground structure, underground structure, and precast concrete member therefor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5349817A (en) * | 1976-10-19 | 1978-05-06 | Nippon Pressed Concrete Kk | Underground wall construction method |
| JPS61134422A (en) * | 1984-12-04 | 1986-06-21 | Fujita Corp | Method of building precast concrete underground continuous wall |
| JPH02266015A (en) * | 1989-04-03 | 1990-10-30 | Takenaka Komuten Co Ltd | Constructing underground continuous wall |
-
1992
- 1992-07-08 JP JP4181066A patent/JP2555838B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0626034A (en) | 1994-02-01 |
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