JPS626027A - Chipping for shaped steel face in underground wall construction work - Google Patents
Chipping for shaped steel face in underground wall construction workInfo
- Publication number
- JPS626027A JPS626027A JP14148085A JP14148085A JPS626027A JP S626027 A JPS626027 A JP S626027A JP 14148085 A JP14148085 A JP 14148085A JP 14148085 A JP14148085 A JP 14148085A JP S626027 A JPS626027 A JP S626027A
- Authority
- JP
- Japan
- Prior art keywords
- chisel
- wall
- shaped steel
- rock drill
- underground wall
- 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
Landscapes
- Bulkheads Adapted To Foundation Construction (AREA)
- Shovels (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、地中壁構築工法に関し、特に壁体に埋設され
た型鋼の表面のはつり作業を効率化したはつり方法に関
する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an underground wall construction method, and more particularly to a chisel method that streamlines the chisel work of the surface of a shaped steel buried in a wall.
従来の技術
地下構造物の建設にあたり、とくに湿潤な地盤において
は、一般に止水壁体及び土留壁体としての地中壁が構築
される。地中壁41!I築工法は種々であるが、例えば
第4図に示す工法が知られている。BACKGROUND OF THE INVENTION When constructing an underground structure, especially in humid ground, underground walls are generally constructed as water-stop walls and earth-retaining walls. Underground wall 41! Although there are various construction methods, for example, the construction method shown in FIG. 4 is known.
先ず、オーガ(図示せず)を用いて地盤を所定深さまで
削孔し、該削孔内にオーガの中空孔を介してセメント、
砂、砂利等の混合物を注入しつつオーガを引上げ、抗1
1を形成する。上記作業を繰り返して杭11〜17を連
設し、所定の杭例えばひとつ置きの杭11,13.15
.17にH型鋼21〜24等を埋設して外壁体1となす
(第4図(a))。図示の簡略化のため、第4図(a
)には外壁体1の一部のみを示しであるが、該壁体1は
例えば平面視矩形状の空間を画成するように該矩形の周
辺に沿って配設される(以下、図示部分についてのみ説
明する。)。次いで、外壁体1で画成された空間内の土
砂3を掘削し外部へ排除した後、外壁体1の型鋼埋設部
の一側すなわち杭の内側周縁部11a、”13a、15
a、17aを、少なくともH型鋼21〜24の外面が露
出するまではつる(第4図(b))。次に、露出したH
型鋼21〜24の面に鉄筋31を溶接等により結合し、
セメントミルク、砂、砂利等の混合物32を入れ内壁体
23とする。First, a hole is drilled in the ground to a predetermined depth using an auger (not shown), and cement and cement are poured into the hole through the hollow hole of the auger.
Pull up the auger while injecting a mixture of sand, gravel, etc.
form 1. By repeating the above operations, piles 11 to 17 are installed in a row, and the specified piles, for example, every other pile 11, 13, 15
.. H-shaped steels 21 to 24, etc. are buried in 17 to form the outer wall 1 (FIG. 4(a)). For simplicity of illustration, Figure 4 (a
Although only a part of the outer wall 1 is shown in ), the wall 1 is arranged along the periphery of the rectangle so as to define, for example, a rectangular space in plan view (hereinafter, the illustrated portion will be referred to as ). Next, after excavating the earth and sand 3 in the space defined by the outer wall 1 and removing it to the outside, one side of the section where the shaped steel is buried in the outer wall 1, that is, the inner peripheral edge of the pile 11a, ``13a, 15
a, 17a until at least the outer surfaces of the H-shaped steels 21 to 24 are exposed (FIG. 4(b)). Next, the exposed H
Reinforcing bars 31 are connected to the surfaces of the shaped steels 21 to 24 by welding or the like,
A mixture 32 of cement milk, sand, gravel, etc. is put in to form the inner wall body 23.
上記工法によれば、H型鋼に鉄筋を溶接するために、H
型鋼の内側表面をはつる作業を行う必要がある。従来、
このはつり作業をハンドハンマ等を用いて人力で行って
おり、作業能率1作業コスト、作業環境等の種々の面で
問題があり、又、パワーショベル等に装着したパケット
の爪部ではつり作業を行う場合もあるが、外壁体1のコ
ンクリート部にひびを生じさせることがあり、止水性を
損う問題があった。According to the above method, in order to weld reinforcing bars to H-shaped steel, H
It is necessary to chisel the inner surface of the shaped steel. Conventionally,
This chiseling work is done manually using a hand hammer, etc., and there are various problems in terms of work efficiency, work cost, work environment, etc., and the claw part of the packet attached to a power shovel etc. cannot be used for lifting work. Although this may be done in some cases, it may cause cracks in the concrete portion of the outer wall 1, resulting in the problem of impairing water-stopping properties.
発明が解決しようとする問題点
本発明は、地中壁構築工法によって互いに連設される壁
体の型鋼内側表面のはつり作業の効率を向上でき、はつ
り面の仕上りが良く、作業時の騒音が少なく、作業コス
トも低床なはつり方法を提供することを目的とする。Problems to be Solved by the Invention The present invention can improve the efficiency of chiseling work on the inner surface of shaped steel of wall bodies that are connected to each other by the underground wall construction method, and can improve the finish of the chiseled surface and reduce noise during work. The purpose of the present invention is to provide a method for chiseling that requires less work and has a lower work cost.
問題点を解決するための手段
地中壁構築工法において、パワーショベル等の建設機械
に装備されたさく岩機に装着した平形のタガネを、外壁
体の型鋼の表面まで打込み、次いで、前記さく岩機をそ
の自重で垂下運動させて前記外壁体の型鋼の内側表面の
コンクリートを破壊除去する構成より成る
作 用
パワーショベル等の建設機械に装着されたさく岩機に平
形のタガネを装着し、該タガネを外壁体の型鋼埋設部の
型鋼側表面に打ち込み、打撃力を加えると、該−側周縁
部を成すセメント混合固化物が徐々に破壊されて行き、
外壁体に埋設された型鋼の内側外面が露出するに至る。Means for Solving the Problems In the underground wall construction method, a flat chisel attached to a rock drill installed on a construction machine such as a power shovel is driven up to the surface of the shaped steel of the external wall body, and then the rock drill is A flat chisel is attached to a rock drill attached to a construction machine such as a power shovel, and the concrete on the inner surface of the shaped steel of the outer wall body is destroyed and removed by making the machine hang down under its own weight. When a chisel is driven into the mold steel side surface of the mold steel buried part of the outer wall body and a striking force is applied, the cement mixture solidified material forming the negative side peripheral edge is gradually destroyed.
The inner and outer surfaces of the shaped steel embedded in the outer wall are exposed.
次に、打撃操作を停止すると共にパワーショベル等の建
設機械を非作動化してさく岩機等の機械の自重で垂下す
るにまかせると、自重によるさく岩機等の機械のの垂下
運動に伴う押圧力が、型鋼埋設部の一側周縁部を成すコ
ンクリートに加わり、これを破壊する。この作業を繰「
すと、型鋼の各々の一側面全体が露出し、はつり作業が
完了する。Next, if you stop the impact operation and deactivate the construction machine such as a power shovel and allow it to sag due to its own weight, it will be possible to avoid the pressure caused by the drooping movement of the machine such as a rock drill due to its own weight. Pressure is applied to the concrete forming the peripheral edge of one side of the buried part of the shaped steel, destroying it. Repeat this process.
Then, one entire side of each of the steel shapes is exposed and the chisel operation is completed.
実施例
第1゛図及び第2図は本発明の一実施例に係るはつり方
法を示し、図中1は外壁体で、第4図に基づく上述の説
明のようにして構築される。40は建設機械例えばパワ
ーショベルで、土砂を掘削排除した外壁体1の内側空間
4内に配備され、第3図に示す平形のタガネ42を装着
したさく岩FM41を搭載している。Embodiment FIGS. 1 and 2 show a chisel method according to an embodiment of the present invention, in which reference numeral 1 denotes an outer wall body, which is constructed as described above based on FIG. 4. 40 is a construction machine such as a power shovel, which is installed in the inner space 4 of the outer wall 1 from which earth and sand has been excavated and removed, and is equipped with a rock drilling FM 41 equipped with a flat chisel 42 shown in FIG.
外壁体1のはつり作業にあたり、先ず、パワーショベル
40を駆動してタガネ42を外壁体1の型鋼埋設部例え
ば型鋼としてのH型鋼21が埋設されている部分に向け
、当該部分の一側周縁部118の最上部にタガネ42を
打込む。次いで、さく岩機41を駆動してタガネ42に
より該−側周縁部11aに略垂直に打撃力を加え、当該
部分のコンクリートを徐々に水平方向に破壊して行く。To chisel the outer wall 1, first drive the power shovel 40 and point the chisel 42 at the part of the outer wall 1 where the shaped steel is buried, for example, the part where the H-shaped steel 21 as the shaped steel is buried, and cut the edge of one side of the part. Drive the chisel 42 into the top of 118. Next, the rock drill 41 is driven to apply a striking force substantially perpendicularly to the minus side peripheral edge portion 11a using the chisel 42, thereby gradually destroying the concrete in that portion in the horizontal direction.
この打撃操作はH型鋼21の一側外面21aが露出する
まで継続される。外面21aが露出しだならば、さく岩
機41の駆動を停止し打撃操作を終了し、パワーショベ
ル4oを非作動化してさく岩機41の高さ位置を維持す
る支持力を消滅させ、さく岩機41さらにはパワーショ
ベルのアームやパワーショベル自体の自重全印加して垂
下するにまかせるようにする。この結果、さく岩機41
及びショベル40のブーム等の相当な重量がタガネ42
を介してH/8!鋼21の表面の周縁部11aのコンク
リート部に加わり、タガネ42の先端がH型wI21の
外面21aに当接した状態でさく岩機41が垂下して行
きコンクリート部を破壊しはつっていく(第2図参照)
。この垂下運動は周縁部11aの最上部から最下部に亘
るコンクリート部を破壊させる。その結果、杭11の周
縁部11aは、略タガネ42の幅寸法でH型鋼21の外
面が露出するように破壊される。This striking operation is continued until one side outer surface 21a of the H-shaped steel 21 is exposed. When the outer surface 21a is exposed, the drive of the rock drill 41 is stopped, the striking operation is finished, the power shovel 4o is deactivated, the supporting force that maintains the height position of the rock drill 41 is eliminated, and the rock drill 41 is stopped. The entire weight of the rock machine 41, the arm of the power shovel, and the power shovel itself is applied to the rock machine 41 so as to allow it to sag. As a result, rock drill 41
The considerable weight of the boom of the excavator 40, etc.
via H/8! The rock drill 41 joins the concrete part of the peripheral edge 11a of the surface of the steel 21, and with the tip of the chisel 42 in contact with the outer surface 21a of the H-shaped wI 21, the rock drill 41 hangs down and breaks the concrete part ( (See Figure 2)
. This drooping movement destroys the concrete portion from the top to the bottom of the peripheral edge 11a. As a result, the peripheral edge 11a of the pile 11 is destroyed so that the outer surface of the H-shaped steel 21 is exposed at approximately the width dimension of the chisel 42.
そして、H型!1121の外面21a全体が十分に露出
するまでタガネ42の打込み位置を外壁体1に沿って移
動しつつ上記作業を繰返し、H型u421の埋設部につ
いてのはつり作業を終える。更に、H型鋼22〜24及
′び図示を省略したH型鋼を埋設した部分につき同様に
作業し、外壁体1全体のはつり作業を完了する。And H type! The above operation is repeated while moving the driving position of the chisel 42 along the outer wall 1 until the entire outer surface 21a of the H-shaped U421 is fully exposed, and the chisel operation for the buried portion of the H-shaped u421 is completed. Furthermore, the same work is carried out on the H-shaped steels 22 to 24' and the buried portions of the H-shaped steels (not shown), thereby completing the chiseling work of the entire outer wall 1.
はつり作業完了後は、第4図を参照して説明したように
、H型鋼21〜24等の露出面に鉄筋31等を溶接して
内壁体2を外壁体1に連設し、地中壁の構築を終える。After the chiseling work is completed, as explained with reference to Fig. 4, the reinforcing bars 31, etc. are welded to the exposed surfaces of the H-shaped steels 21 to 24, etc., and the inner wall 2 is connected to the outer wall 1, and the underground wall is Finish building the.
なお、タガネの構造を第3図に示すように、タガネの先
端43の向きがタガネの軸線に対し偏向させたタガネ4
2′を用いて、タガネ42′の先端43の向きが下方向
になるようさく岩機に取り付ければ、タガネ42′の先
端43がH型鋼とコンクリート間に挿入しやすくなりよ
りはつり作業が楽に行なえるようになる。As shown in FIG. 3, the structure of the chisel is a chisel 4 in which the direction of the tip 43 of the chisel is deflected with respect to the axis of the chisel.
If the tip 43 of the chisel 42' is attached to the rock drill with the tip 43 facing downward, the tip 43 of the chisel 42' can be easily inserted between the H-shaped steel and the concrete, making chisel work easier. Become so.
発明の効果
地中壁構築工法において、パワーショベル等の建設機械
に装備されたさく岩機に装着した平形のタガネにて壁体
の型鋼埋設部の内側周縁部を打撃して型鋼外面を露出さ
せた後、さく岩機等の機械の自重で垂下運動させて前記
内側周縁部を破壊除去することにより壁体のはつり作業
を行うようにしたので、はつり作業の効率を向上でき、
はつり面の仕上りが良く、騒音を抑制でき、作業コスト
も低部にできる。Effects of the Invention In an underground wall construction method, a flat chisel attached to a rock drill installed on a construction machine such as a power shovel is used to strike the inner peripheral edge of the buried section of the shaped steel in the wall to expose the outer surface of the shaped steel. After that, the wall is chiseled by using a machine such as a rock drill to make a drooping motion under its own weight to destroy and remove the inner peripheral edge, thereby improving the efficiency of the chisel work.
The cutting surface has a good finish, suppresses noise, and reduces work costs.
第1図は、本発明の一実施例によるはつり作業を示す一
部断面部分概略側面図、第2図は同実施例を示す一部断
面部分斜視図、第3図は本発明に使用するタガネの他の
実施例の要部拡大図、及び第4図(a )〜(C)は本
発明が適用される地中壁構築工法を例示する部分平面断
面図である。
1・・・外壁体、2・・・内壁体、11〜17・・・杭
、11a、13a、15a、17a・・・周縁部、21
〜24・・・H型鋼、40・・・パワーショベル、41
・・・さく若殿、42.42’ ・・・平形のタガネ。
特許出願人 株式会社 多 川 工 業第1図
上
第3図
第4図FIG. 1 is a partially cross-sectional partial schematic side view showing a chisel operation according to an embodiment of the present invention, FIG. 2 is a partially cross-sectional partial perspective view showing the same embodiment, and FIG. 3 is a chisel used in the present invention. An enlarged view of the main part of another embodiment, and FIGS. 4(a) to 4(C) are partial plan sectional views illustrating an underground wall construction method to which the present invention is applied. DESCRIPTION OF SYMBOLS 1... External wall body, 2... Inner wall body, 11-17... Pile, 11a, 13a, 15a, 17a... Peripheral part, 21
~24...H-shaped steel, 40...Power shovel, 41
...Sakuwakadono, 42.42' ...Flat-shaped chisel. Patent applicant Tagawa Kogyo Co., Ltd. Figure 1
Above Figure 3 Figure 4
Claims (2)
設機械に装備されたさく岩機に装着した平形のタガネを
、前記地中壁構築工法で作成された外壁体の型鋼の表面
まで打込み、次いで前記さく岩機等の機械の自重で垂下
運動させて前記外壁体の型鋼の内側表面コンクリートを
破壊除去するようにした地中壁構築工法における型鋼面
はつり方法。(1) In the underground wall construction method, a flat chisel attached to a rock drill installed on a construction machine such as a power shovel is driven up to the surface of the shaped steel of the external wall body created by the underground wall construction method, A method for removing a form steel surface in an underground wall construction method, wherein the inner surface concrete of the form steel of the external wall body is destroyed and removed by making the machine, such as the rock drill, move downward under its own weight.
方向に対し偏向している特許請求の範囲第1項記載の地
中壁構築工法における型鋼面はつり方法。(2) The method for chisel-shaped steel surface in the underground wall construction method according to claim 1, wherein the tip of the flat chisel is deviated from the axial direction of the chisel.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14148085A JPS626027A (en) | 1985-06-29 | 1985-06-29 | Chipping for shaped steel face in underground wall construction work |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14148085A JPS626027A (en) | 1985-06-29 | 1985-06-29 | Chipping for shaped steel face in underground wall construction work |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS626027A true JPS626027A (en) | 1987-01-13 |
JPH0518970B2 JPH0518970B2 (en) | 1993-03-15 |
Family
ID=15292872
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14148085A Granted JPS626027A (en) | 1985-06-29 | 1985-06-29 | Chipping for shaped steel face in underground wall construction work |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS626027A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002371545A (en) * | 2001-06-13 | 2002-12-26 | Shimizu Corp | Composite underground outer wall and its construction method |
JP2008095380A (en) * | 2006-10-12 | 2008-04-24 | Hokuto:Kk | Cutting device and cutting machine |
JP2012140826A (en) * | 2011-01-05 | 2012-07-26 | Takenaka Komuten Co Ltd | Bracing wall and building |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5042001U (en) * | 1973-08-20 | 1975-04-28 | ||
JPS57121485A (en) * | 1981-01-09 | 1982-07-28 | Oyodo Diesel Kk | Concrete or rock crusher |
-
1985
- 1985-06-29 JP JP14148085A patent/JPS626027A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5042001U (en) * | 1973-08-20 | 1975-04-28 | ||
JPS57121485A (en) * | 1981-01-09 | 1982-07-28 | Oyodo Diesel Kk | Concrete or rock crusher |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002371545A (en) * | 2001-06-13 | 2002-12-26 | Shimizu Corp | Composite underground outer wall and its construction method |
JP2008095380A (en) * | 2006-10-12 | 2008-04-24 | Hokuto:Kk | Cutting device and cutting machine |
JP2012140826A (en) * | 2011-01-05 | 2012-07-26 | Takenaka Komuten Co Ltd | Bracing wall and building |
Also Published As
Publication number | Publication date |
---|---|
JPH0518970B2 (en) | 1993-03-15 |
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