JPS5921821A - Circular underground wall construction - Google Patents
Circular underground wall constructionInfo
- Publication number
- JPS5921821A JPS5921821A JP13027182A JP13027182A JPS5921821A JP S5921821 A JPS5921821 A JP S5921821A JP 13027182 A JP13027182 A JP 13027182A JP 13027182 A JP13027182 A JP 13027182A JP S5921821 A JPS5921821 A JP S5921821A
- Authority
- JP
- Japan
- Prior art keywords
- guide frame
- trench
- excavated
- circular
- motor
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は地中連続壁の掘削方法に関する。[Detailed description of the invention] The present invention relates to a method for excavating a diaphragm wall.
地中連続壁は従来より幅広い用途に用いられ、その有効
性が評価されている。具体的には、建造物の基礎、掘削
土留及び本体壁、地下タンクの止水壁及び本体壁、都市
トンネルの立坑の土留等に活用されている。この工法の
長所は低騒音、低振動で施工できる上、長深度の施工も
可能で出水効果が良く、本体構造の一部にも使えること
である。Underground walls have been used for a wide range of purposes, and their effectiveness has been evaluated. Specifically, it is used for the foundations of buildings, excavated earth retaining and main body walls, underground tank water stop walls and main body walls, earth retaining of vertical shafts of urban tunnels, etc. The advantages of this construction method are that it can be constructed with low noise and vibration, it can be constructed at long depths, it has a good water drainage effect, and it can be used on parts of the main structure.
上記の用途の中でも都市トンネルの立坑築造の際は、地
中連続壁を用いて平面形状が矩形もしくは多角形の施工
が多かった。この場合、従来の地中連続壁掘削機は第１
図に示すように幅４０〜８０の、長さ２〜Ｌｍの溝を一
度に連続的に掘削し、その工程を繰返して平面上に連続
させて四角形ま７ｔは多角形状の立坑を完成していた。Among the above-mentioned uses, when constructing vertical shafts for urban tunnels, underground continuous walls were often used and the planar shape was rectangular or polygonal. In this case, the conventional diaphragm wall excavator is
As shown in the figure, trenches with a width of 40 to 80 mm and a length of 2 to 1 m are continuously excavated at once, and the process is repeated to create a rectangular or 7 t polygonal shaft. Ta.
この地中壁と立坑形状には次のような欠点がある。すな
わち１．地中壁で囲まれた、立坑内部音掘削する際に第
１図に見られる工うに多数の切梁全必要とし、完成後の
作業空間が狭いこと、良さ２〜ａｍのス／ｆンを連結す
るので、その継目からの漏水が多いこと、半面形状が直
線の地中壁で立坑が構成されるので、周囲の土圧に抵抗
するため地中壁の断面を大きくする必要があること、な
どである。This underground wall and shaft shape has the following drawbacks. That is, 1. Sound inside a shaft surrounded by an underground wall When excavating a shaft, as shown in Figure 1, a large number of struts are required, and the work space after completion is narrow, and the speed of 2 to 2 am is required. Because they are connected, there is a lot of water leakage from the joints, and because the shaft is composed of a half-straight underground wall, the cross section of the underground wall needs to be large to resist the surrounding earth pressure. etc.
上記の欠点全解消するために第２及び３図に示千丁工つ
な円形立坑が考えられ、たが、従来工法で施工すると継
手が多いため、円形にしたメリットが充分に発揮できな
い。すなわち、継手からの漏水が多く、周囲の土正に切
梁なしで抵抗するには滑らかな円形形状の地中壁である
必要があり、また、施工時間も１スパンずつ掘削するの
で長時間ケ要した。。In order to eliminate all of the above-mentioned drawbacks, a circular vertical shaft with a continuous construction as shown in Figures 2 and 3 was considered, but when constructed using the conventional construction method, there are many joints, so the merits of the circular shaft cannot be fully demonstrated. In other words, there is a lot of water leakage from the joints, and in order to resist the surrounding earthwork without struts, the underground wall needs to have a smooth circular shape.In addition, the construction time is long because each span is excavated at a time. It took. .
不発明は上記した欠点全解消するものである、。Non-invention eliminates all of the above-mentioned drawbacks.
らかな円形状の立坑を完成することができ、立坑内の切
梁が不快となりまた、連続的に掘るので施工時間が大幅
に縮小される。第４及び５図はこのようにして連続的に
円形に地中壁ケ泰造した例である。It is possible to complete a shaft with a smooth circular shape, the struts inside the shaft are not uncomfortable, and the construction time is greatly reduced because it is dug continuously. Figures 4 and 5 show examples of continuous circular underground wall construction in this manner.
以下、図面に従い本発明？説明する。The following is the invention according to the drawings? explain.
第６図に示すよう（（、地中連続壁用溝の予定位置の外
周に接して、過当な間隔で垂直に定規抗（３）を予め設
置する。また、予定位置には溝會１〜２ｍ深さに予じめ
掘削しておき、溝の両側にはガイドウオールを築造して
おき、周囲の地下水位に応じて粘土、ベントナイト等を
適度に含んだ泥水を満たしておく。As shown in FIG. The trench is excavated in advance to a depth of 2 meters, and guide walls are built on both sides of the trench, and filled with muddy water containing an appropriate amount of clay, bentonite, etc., depending on the surrounding groundwater level.
切削装［（２１’ｔ Ｍｌ架した案内枠（１）をワイヤ
ー（８１）で吊った状態でピッ）（２４）が溝の底に接
するまで下ろ丁１．切削装置ｔ（２１に装備された走行
用モーター（２１）の回転に工９、ビット（（２４）で
地盤全掘削しながら、切削装置（２）は案内枠（１）を
走行する。掘削された土砂は、土砂排出用ボンデ（２３
）にエリ、泥水と共に地−ヒに搬出さｆる。案内枠（１
）には複数個の自動深度測定器を取付け、測定結果に応
じて巻きあげ用電動モーター（８２１操作して、案内枠
（１）ケ上下させる。Cutting device [(21't Ml) With the suspended guide frame (1) suspended by the wire (81), cut the cutting tool 1. until the (24) touches the bottom of the groove. The cutting device (2) runs along the guide frame (1) while excavating the entire ground with the bit (24). Remove the soil using a soil discharge bonder (23
), it was carried out to Earth along with muddy water. Guide frame (1
) is equipped with a plurality of automatic depth measuring devices, and depending on the measurement results, the hoisting electric motor (821) is operated to raise and lower the guide frame (1).
巻きあげ用電動モーター（８２）は、図の圀において汀
、定規抗（３）の本数に対応して４個であるが、立坑の
規模に応じて個数は調整される（第６図には１台のみｉ
１載しである５、）。また、巻き上げ用電動モーター（
８２）は設置された台数が全て同調して連動するエラに
さｎている。The number of electric motors (82) for hoisting is four, corresponding to the number of shores and ruler shafts (3) in the area shown in the figure, but the number is adjusted depending on the scale of the shaft (see Figure 6). Only 1 unit i
5). In addition, an electric motor for hoisting (
82) is based on the fact that all the installed units are synchronized and interlocked.
案内枠ｆｉｌは、第８．９及び１０図に示す工すに、上
下面に突起（１１，１２）全持ち、切削装置（２）全誘
導する役目ケ担う。′また。側面には走行用モーター（
２２）のギヤとかみあう案内用イヤ（１３）が取付けで
ある。案内枠（１）の断面の詳細は第９及び１０図に示
されている。The guide frame fil, as shown in FIGS. 8.9 and 10, has projections (11, 12) on its upper and lower surfaces and plays the role of fully guiding the cutting device (2). 'Also. On the side is a running motor (
The guide ear (13) that meshes with the gear 22) is attached. Details of the cross section of the guide frame (1) are shown in FIGS. 9 and 10.
切削装置（２）は第８図に示すように、走行用モーター
（２、ｌ）、ビット回転用モーター（２２）及 ５−
び土砂排出ポンプ（２３）？ｒ搭載しており、下部にビ
ット（２４）と土砂吸入口（２５）が設置されている。As shown in Fig. 8, the cutting device (2) includes a traveling motor (2, l), a bit rotation motor (22), and a sand discharge pump (23). r, and a bit (24) and sand inlet (25) are installed at the bottom.
なお、図の例では各モータとも１台であるが、立坑の規
模により複数個設けられてもよい。In the illustrated example, there is one motor for each motor, but a plurality of motors may be provided depending on the scale of the shaft.
走行用モータ（２１）の回転に、第９図に示される。よ
うに、走行ギヤ（２１１）？１″経由して、案′内枠（
１１の案内用ギヤ（１３）に伝えられ、７切削装置（２
）が前進またＩ−１後退する。切削装置（２）の重量ま
たはピッ）（２４）で受ける掘削時の地盤反力は走行用
ローラ（ｇｔ２）で案内枠（１）の上面または下面に伝
えられ、切削装置の走行亀なめらかにする。The rotation of the traveling motor (21) is shown in FIG. Like, running gear (211)? 1”, and the guide frame (
The information is transmitted to 11 guiding gears (13), and 7 cutting devices (2
) moves forward and I-1 moves backward. The weight of the cutting device (2) or the ground reaction force during excavation received by the pit (24) is transmitted to the upper or lower surface of the guide frame (1) by the traveling rollers (gt2), making the cutting device run smoothly. .
第１０図に示すように、ビット回転用モータ（２２）の
同転はビット回転用ギヤ（２２１）Ｑ経由してビット（
９４）に伝えられ、ビット會回転する。図Ｖ（は記載し
ていないが、回転速度変換−〇 −
ギヤが必要となる場合もある。０７″１．は走行ギヤ（
２１１）についても同様である。As shown in Fig. 10, the bit rotation motor (22) is rotated via the bit rotation gear (221) Q.
94) and rotates the bit. Although figure V (is not shown), a rotational speed conversion gear may be required. 07″1. is the running gear (
The same applies to 211).
地中連続壁用溝の施工は、第７図に示すように、前述し
た手順でワイヤー巻きあげ用旺動モータ（８２）で案内
枠ｆｉ＋の深度會祠節しながら進められる。掘削した土
砂は土砂吸入口（２５）から吸い上げられ、土砂排出用
ボンｆ（２３）及び土砂排出パイプ（２６）’に経由し
て地上に排出される。図には記載していないが、土砂排
出用ホース（２６）及び醒動機用ケーブルは地上カラク
レーンで吊り下げられている。As shown in FIG. 7, the construction of the underground continuous wall trench is carried out according to the procedure described above while adjusting the depth of the guide frame fi+ using the wire winding motor (82). The excavated earth and sand is sucked up from the earth and sand suction port (25) and discharged to the ground via the earth and sand discharge bomb f (23) and the earth and sand discharge pipe (26)'. Although not shown in the figure, the earth and sand discharge hose (26) and the lifting cable are suspended by a ground crane.
掘削中の案内枠（１）の水平方向の＋Ｆｌｔ動は第６図
に示す定規杭（３）に嵌合する突起（１４）で抑えが、
それぞれの定規抗（３）の建込積度がＩ／、ｏ程度でも
、地中連続壁用溝の掘削は可能である。The +Flt movement in the horizontal direction of the guide frame (1) during excavation is suppressed by the protrusion (14) that fits into the ruler pile (3) shown in Fig. 6.
It is possible to excavate a trench for an underground continuous wall even if the built-up density of each ruler shaft (3) is about I/o.
掘削が所要の深度まで達すると、案内枠（１）及び切削
装置（２）はワイヤー巻１！！あけ用電動機（８２）で
地上まで引き上げられ、撤去される。その後、鉄筋篭全
投入し、コンクリ−ｉｋ打設することによって、地中連
続壁が完成さ′ｎゐ。When the excavation reaches the required depth, the guide frame (1) and the cutting device (2) are connected to the wire winding 1! ! It is pulled up to the ground by the electric motor for drilling (82) and removed. After that, the underground continuous wall was completed by putting in all the reinforcing bars and pouring concrete.
本発明の方法によれば、例えば立坑の築造に適用した場
合には、円環状の立坑となるので従来必要であった多数
の切梁が不要となり、作業空間が広くなるので立坑内の
作業の＠湊が防げるほか、安全性が向上し、ｉた、作業
時間も短縮でき、地中連続壁を継手なしで施工するので
周囲の地盤からの漏水が大幅に減少し、円環状であるた
め周囲の土圧及び水圧に対する抵抗力が大きくなり、従
ってコンクリート断面ケ減少することかで＠経済的とな
る。また、地中連続壁の施工自体も、連続的に施工する
ことがｔＸＪ’ｓＦなので、作業時間の短縮と経費の頗
減が「計れる。本発明の方法は、上記のほか、構造物の
基礎、嬌脚の大深度基礎などにも利用でき、やはり上述
したと同様の種々の利益ケもたらすことができる。According to the method of the present invention, when applied to the construction of a shaft, for example, the shaft is circular, so there is no need for a large number of struts that were previously required, and the work space is widened, making it easier to work inside the shaft. In addition to preventing @minato, safety is improved and work time is also shortened. Since the underground continuous wall is constructed without joints, water leakage from the surrounding ground is greatly reduced, and because it is annular, water leakage from the surrounding ground is greatly reduced. It becomes more economical because the resistance to earth pressure and water pressure increases, and the concrete cross section decreases. In addition, since the construction of the underground continuous wall itself is continuous construction, it is possible to shorten the work time and significantly reduce the cost.In addition to the above, the method of the present invention It can also be used for deep foundations such as tsukyaku, and can bring about the same various benefits as mentioned above.
平面図、編３図はその立面図、第４図は本発明の装置で
連続的に施工さｎた立坑の十…ｊ図、Ｆ８５図はその立
面図、渠６図は案内枠、切削装置ａ及び定規杭の平面図
、第７図（第６図にお汀るト」矢視図）は案内枠の上昇
及び下降を説明する図で、案内枠、足規杭及びワイヤー
巻きあげ用電動機の断面ケ示すものであり、第８内は切
削装置及び案内枠を円形立坑の内側がらみた立面図、第
９図（第８図におけるに一４矢祝図目よ走行用モータの
位置で案内枠とともに切断した断ｍ］図、第１０図（，
１８図におけるＸ−Ｘ矢視図）μビシ１回転 ９ −
用モータの位置で案内枠とともに切断した断面図走行用
ギア１．２１２は走行用ローラ、２２はビット回転用モ
ータ、２２１にビット回転用ギヤ、は従来の装置による
ｉｎ＋Ｉ削溝（コンクリート投入後）、５は本発明の装
置による掘削溝（コンクリート投入後）、６に立坑内地
盤、５′は本発明の装置ＩＬによる掘削溝、７は地盤、
８１は吊Ｖめげ用ワイヤー、８２汀墨りあげ用モータ、
８３は滑車、４１は腹起こし、４２は切梁、４３は火打
である。The plan view, Figure 3 is an elevation view, Figure 4 is a vertical view of a shaft continuously constructed using the apparatus of the present invention, Figure F85 is an elevation view, Figure 6 of a culvert is an elevation view, The plan view of the cutting device a and the ruler pile, and Figure 7 (view from the arrow ``T'' shown in Figure 6) is a diagram explaining the raising and lowering of the guide frame, and shows the guide frame, the footwork pile, and the wire winding. Figure 8 is an elevational view of the cutting device and guide frame viewed from the inside of the circular shaft; Figure 10 (section m) cut along with the guide frame at the position
X-X arrow view in Figure 18) Cross-sectional view taken along with the guide frame at the position of the μ-bit motor 9 - Traveling gear 1. 212 is the traveling roller, 22 is the bit rotation motor, 221 is the bit rotation 5 is an excavation groove by the device of the present invention (after concrete is poured), 6 is the ground in the shaft, 5' is an excavation groove by the device IL of the present invention, 7 is the ground;
81 is the wire for hanging V, 82 is the motor for sanding the seashore,
83 is a pulley, 41 is a belly stand, 42 is a strut beam, and 43 is a flint.
Claims (1)
る平面形状が円環状の案内桁（１）に、回転切削刃、土
砂排出用ポンプ及び走行装置上具備する切削装置（２）
？懸架し、該切削装置ケ核円墳状案内桁に沿って連続的
に走行させながら円環状の地中壁用溝を施工することｔ
％徴とする円環状地中壁築造方法。A plurality of vertical ruler piles + 31 A guide girder (1) with an annular planar shape that can be raised and lowered along K, a cutting device (2) equipped with a rotary cutting blade, a pump for discharging earth and sand, and a traveling device.
? To construct an annular underground wall trench while suspending the cutting device and continuously running it along the core circular guide girder.
A method of constructing circular underground walls based on percentages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13027182A JPS5921821A (en) | 1982-07-28 | 1982-07-28 | Circular underground wall construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13027182A JPS5921821A (en) | 1982-07-28 | 1982-07-28 | Circular underground wall construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5921821A true JPS5921821A (en) | 1984-02-03 |
| JPS6213447B2 JPS6213447B2 (en) | 1987-03-26 |
Family
ID=15030302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13027182A Granted JPS5921821A (en) | 1982-07-28 | 1982-07-28 | Circular underground wall construction |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5921821A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6263720A (en) * | 1985-09-12 | 1987-03-20 | Osaka Bosui Kensetsushiya:Kk | Construction work for round underground continuous wall |
| CN110485434A (en) * | 2019-09-18 | 2019-11-22 | 建研地基基础工程有限责任公司 | A kind of assembled annular steel construction internal support structure system and design method for deep foundation pit support |
-
1982
- 1982-07-28 JP JP13027182A patent/JPS5921821A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6263720A (en) * | 1985-09-12 | 1987-03-20 | Osaka Bosui Kensetsushiya:Kk | Construction work for round underground continuous wall |
| CN110485434A (en) * | 2019-09-18 | 2019-11-22 | 建研地基基础工程有限责任公司 | A kind of assembled annular steel construction internal support structure system and design method for deep foundation pit support |
| CN110485434B (en) * | 2019-09-18 | 2021-07-23 | 建研地基基础工程有限责任公司 | Fabricated annular steel structure inner support structure system for deep foundation pit supporting and design method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6213447B2 (en) | 1987-03-26 |
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