JP2002061177A - Method of manufacturing wet columnar body for dwelling house foundation ground - Google Patents
Method of manufacturing wet columnar body for dwelling house foundation groundInfo
- Publication number
- JP2002061177A JP2002061177A JP2000247516A JP2000247516A JP2002061177A JP 2002061177 A JP2002061177 A JP 2002061177A JP 2000247516 A JP2000247516 A JP 2000247516A JP 2000247516 A JP2000247516 A JP 2000247516A JP 2002061177 A JP2002061177 A JP 2002061177A
- Authority
- JP
- Japan
- Prior art keywords
- rod
- columnar body
- diameter
- ground
- drilling
- 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.)
- Pending
Links
Landscapes
- Piles And Underground Anchors (AREA)
- Earth Drilling (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、建造物の中でも比
較的小さな住宅の基礎地盤の湿式柱状体の製造方法に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a wet pillar on a foundation ground of a relatively small house among buildings.
【0002】[0002]
【従来の技術】地中の岩盤層が地表から数メートル程度
の比較的浅いところにあれば基礎地盤の柱状体の下端を
岩盤層に当接させることができるので問題はないが、地
中のかなり深いところまで掘り下げなければ岩盤層に到
達しないような場所においては、土壌と柱状体との摩擦
力のみで建造物の荷重を支持しなければならない。2. Description of the Related Art If the underground rock layer is relatively shallow, about several meters from the surface of the ground, there is no problem because the lower end of the columnar body of the foundation ground can be brought into contact with the rock layer. In places where it is not possible to reach the bedrock unless it is dug deep enough, the load of the building must be supported only by the frictional force between the soil and the column.
【0003】[0003]
【発明が解決しようとする課題】そこで本発明は、柱状
体に環状の突起を形成し、柱状体と地中の土との摩擦力
を大きくすることにより、柱状体の下端が岩盤層に到達
していなくても建造物の荷重をより支持し易くする湿式
柱状体の製造方法を提供することを課題としている。SUMMARY OF THE INVENTION Therefore, the present invention provides an annular projection formed on a columnar body to increase the frictional force between the columnar body and the soil under the ground so that the lower end of the columnar body reaches the bedrock layer. It is an object of the present invention to provide a method of manufacturing a wet columnar body that can easily support the load of a building even if it is not performed.
【0004】[0004]
【課題を解決するための手段】上記課題を解決するため
本発明では、ロッドの先端に掘削刃と液状固化材供給手
段とを設け、前記ロッドの正回転時には縮径しかつ逆回
転時には拡径して逆回転時に半径方向に掘削する掘削機
構を前記ロッドの掘削刃の直上に設け、前記ロッドを正
回転させて前記液状固化材供給手段により液状固化材を
吐出しながら前記掘削刃により地面を所定の深さまで掘
り下げ、所望する深さで前記ロッドを逆回転させて前記
掘削機構により地中又は地表における掘削径を部分的に
拡大することにより環状の突起部を備えた柱状体を形成
するようにした。According to the present invention, an excavating blade and a liquid solidifying material supply means are provided at the tip of a rod, and the diameter of the rod is reduced when the rod rotates forward and the diameter is expanded when the rod rotates reversely. An excavation mechanism for excavating in the radial direction at the time of reverse rotation is provided immediately above the excavation blade of the rod, and the rod is rotated forward to discharge the liquid solidified material by the liquid solidified material supply means, and the ground is excavated by the excavation blade. Digging down to a predetermined depth, rotating the rod in the reverse direction at a desired depth, and partially expanding the excavation diameter in the ground or on the ground by the excavation mechanism to form a columnar body having an annular projection. I made it.
【0005】[0005]
【発明の実施の形態】図1は、本発明の住宅用基礎地盤
の湿式柱状体の製造方法を実施するための柱状体製造装
置100の側面略図である。柱状体製造装置100は、
作業車20のアーム21,22により支持される支柱
5,上端がモータ23を介して支柱5に固着されたロッ
ド1,ロッド1の下端に固着された掘削機4等で構成さ
れている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic side view of a column manufacturing apparatus 100 for carrying out a method for manufacturing a wet column according to the present invention. The columnar body manufacturing apparatus 100 includes:
The vehicle 5 includes a column 5 supported by the arms 21 and 22 of the working vehicle 20, a rod fixed to the column 5 via a motor 23, an excavator 4 fixed to a lower end of the rod 1, and the like.
【0006】ロッド1の掘削機4より上方には詳しくは
後述する拡径掘削機3及び攪拌翼2がロッド1と一体に
固着されている。ロッド1は、モータ23により正回転
及び逆回転が可能となっている。Above the excavator 4 of the rod 1, an enlarged excavator 3 and a stirring blade 2, which will be described in detail later, are integrally fixed to the rod 1. The rod 1 can be rotated forward and backward by a motor 23.
【0007】図5はロッド1が正回転する際のロッド1
の先端部の側面略図であり、図6は図2のVI−VI矢視図
である。また、図7はロッド1が逆回転する際のロッド
1の先端部の側面略図であり、図8は図3のVIII−VIII
矢視図である。ただし、図6及び図8においては、液状
固化材混入土8の記載は省略してある。FIG. 5 shows the rod 1 when the rod 1 rotates forward.
6 is a schematic side view of the tip portion of FIG. 6, and FIG. 6 is a view taken along the line VI-VI in FIG. 7 is a schematic side view of the tip of the rod 1 when the rod 1 rotates in the reverse direction, and FIG.
It is an arrow view. However, in FIG. 6 and FIG. 8, the illustration of the soil 8 mixed with the liquid solidifying material is omitted.
【0008】図5に示すように掘削機4は、複数の掘削
刃4aを備えておりロッド1が正回転する際に穴7(図
2,図6)を掘り進むことができる。拡径掘削機3は、
ロッド1に固着された固定部分3aに拡径掘削刃16が
ピン15で回動可能に連結されて構成されている。攪拌
翼2は、ロッド1が回転する際に後述する液状固化材混
入土8(図2)を攪拌することができるようにロッド1
に傾斜して固着されている。As shown in FIG. 5, the excavator 4 has a plurality of excavating blades 4a, and can excavate the hole 7 (FIGS. 2 and 6) when the rod 1 rotates forward. The large-diameter excavator 3
An enlarged diameter excavating blade 16 is rotatably connected to a fixed portion 3 a fixed to the rod 1 by a pin 15. The agitating blade 2 is configured to stir the liquid solidified material-mixed soil 8 (FIG. 2) described later when the rod 1 rotates.
It is fixed at an angle.
【0009】ロッド1は中空であり、ロッド1内には液
状固化材供給通路6が設けてある。ロッド1の下端には
液状固化材(セメントミルク)を吐出する吐出口6aが
設けてある。液状固化材は、液状固化材供給機25から
液状固化材供給通路6を介して吐出口6aから吐出可能
となっている。The rod 1 is hollow, and a liquid solidifying material supply passage 6 is provided in the rod 1. The lower end of the rod 1 is provided with a discharge port 6a for discharging a liquid solidifying material (cement milk). The liquid solidified material can be discharged from the discharge port 6a from the liquid solidified material supply device 25 via the liquid solidified material supply passage 6.
【0010】図6に示すように、ロッド1が正回転する
と回転方向(進行方向)に対して拡径掘削機3の拡径掘
削刃16の重心Gの位置が矢印で示す回転方向(進行方
向)に対してピン15の位置よりも後方になるため、拡
径掘削刃16はピン15を中心に回動してストッパ17
に当接し、拡径掘削機3は縮径する。したがって、ロッ
ド1の正回転時には拡径掘削刃16は穴7の直径w1を
広げる(拡径掘削する)ことはできない。As shown in FIG. 6, when the rod 1 rotates forward, the position of the center of gravity G of the large-diameter excavating blade 16 of the large-diameter excavator 3 in the rotational direction (progressing direction) is indicated by an arrow with respect to the rotational direction (progressing direction). ) Is located rearward of the position of the pin 15, the enlarged diameter excavating blade 16 rotates about the pin 15 and
, The diameter of the large-diameter excavator 3 is reduced. Therefore, during the forward rotation of the rod 1, the enlarged diameter excavation blade 16 cannot enlarge the diameter w 1 of the hole 7 (perform the enlarged diameter excavation).
【0011】しかし、ロッド1が逆回転すると拡径掘削
刃16の重心Gがピン15よりも進行方向の前方にくる
ため、図8に示すように拡径掘削刃16はピン15を中
心に回動してストッパ17に当接し、穴7の径を部分的
に直径Wに拡大(拡径)することができる。However, when the rod 1 rotates in the reverse direction, the center of gravity G of the enlarged digging blade 16 comes forward of the pin 15 in the traveling direction, so that the enlarged digging blade 16 rotates about the pin 15 as shown in FIG. The hole 7 moves and comes into contact with the stopper 17 so that the diameter of the hole 7 can be partially increased to the diameter W (diameter expansion).
【0012】次に実際に柱状体を製造する過程を説明す
る。まず、図1においてモータ23によりロッド1を正
回転させ、拡径掘削機3を縮径状態(図5,図6に示す
状態)にし、図2に示すように掘削機4により地表10
から地中へ所定深さHまで掘り進む。その際、吐出口6
aから液状固化材(セメントミルク)を吐出させ、液状
固化材と土とを攪拌翼2で攪拌し、穴7内に一様な液状
固化材混入土8を生成する。Next, a process of actually manufacturing a columnar body will be described. First, in FIG. 1, the rod 1 is rotated forward by the motor 23, and the diameter-enlarged excavator 3 is reduced in diameter (the state shown in FIGS. 5 and 6). As shown in FIG.
From the ground to a predetermined depth H. At that time, the discharge port 6
The liquid solidified material (cement milk) is discharged from a, and the liquid solidified material and the soil are stirred by the stirring blade 2 to generate a uniform liquid solidified material mixed soil 8 in the hole 7.
【0013】次に、ロッド1を逆回転させて拡径掘削機
3(拡径掘削刃16)を拡径させ、逆回転させたロッド
1をh2−h1の距離だけ上昇させ、地表10からの深さ
がh 1〜h2の間に下段拡径部11((環状の突起)を形
成する。Next, the rod 1 is rotated in the reverse direction to enlarge the excavator.
3 (diameter-enlarged excavating blade 16) is expanded and rod is rotated in reverse
1 for hTwo-H1The distance from the ground surface 10
Is h 1~ HTwoForm the lower enlarged diameter part 11 ((annular projection) between
To achieve.
【0014】下段拡径部11を形成し終えたらロッド1
を正回転させて拡径掘削機3を直径w1となるように縮
径させ、地表10から深さh3の位置まで上昇させる。
そしてロッド1を逆回転させながら深さh3から深さh4
までロッド1を上昇させ、下段拡径部11と同様に中段
拡径部12を形成する。After forming the lower enlarged diameter portion 11, the rod 1
Is rotated forward to reduce the diameter of the large-diameter excavator 3 so as to have a diameter w 1, and is raised from the ground surface 10 to a position at a depth h 3 .
Then, while rotating the rod 1 in the reverse direction, from the depth h 3 to the depth h 4
The rod 1 is lifted up to form a middle-stage enlarged portion 12 like the lower-stage enlarged portion 11.
【0015】さらにロッド1を地表からh5の位置まで
上昇させて図4に示すように地表10にも下段拡径部1
1及び中段拡径部12と同様に上段拡径部13を形成し
た後、ロッド1を地表10より上方へ引き上げる。液状
固化材混入土8が固化すると穴7内に柱状体30(図
4)が形成される。Furthermore the lower enlarged diameter portion 1 to the surface 10 as shown in FIG. 4 by raising the rod 1 from the surface to the position of the h 5
After the upper-stage enlarged portion 13 is formed in the same manner as the first and middle-stage enlarged portions 12, the rod 1 is pulled upward from the ground surface 10. When the liquid solidified material-mixed soil 8 solidifies, a columnar body 30 (FIG. 4) is formed in the hole 7.
【0016】なお、液状固化材は、穴7を掘り下げる際
に吐出口6aから吐出し、拡径部(下段拡径部11,中
段拡径部12,上段拡径部13)を形成する際及びロッ
ド1を引き上げる際には吐出しないようにしてもよい
が、穴7を掘り下げた後に液状固化材を吐出しながらロ
ッド1を引き上げ、かつ拡径部を形成するようにしても
よい。また、拡径掘削機3は、ロッド1に対して可能な
限り先端に近い箇所に設けるのが好ましい。The liquid solidified material is discharged from the discharge port 6a when the hole 7 is dug down to form the enlarged diameter portion (the lower enlarged diameter portion 11, the middle enlarged diameter portion 12, the upper enlarged diameter portion 13) and When the rod 1 is lifted, the rod 1 may not be discharged. However, after the hole 7 is dug down, the rod 1 may be pulled up while discharging the liquid solidifying material, and the enlarged diameter portion may be formed. Further, it is preferable that the diameter-enlarged excavator 3 is provided at a position as close as possible to the tip of the rod 1.
【0017】本実施の形態においては、図4に示すよう
に拡径部を3つ(下段拡径部11,中段拡径部12,上
段拡径部13)形成する例を示したが、柱状体製造装置
100を使用した本発明の住宅用基礎地盤の湿式柱状体
の製造方法では、土壌や建造物の重量等の条件によって
は拡径部をいくつでも容易に設けることができる。In this embodiment, as shown in FIG. 4, an example is shown in which three enlarged diameter portions (lower enlarged diameter portion 11, middle enlarged diameter portion 12, and upper enlarged diameter portion 13) are formed. In the method of manufacturing a wet columnar body for a residential foundation ground using the body manufacturing apparatus 100 according to the present invention, any number of enlarged diameter portions can be easily provided depending on conditions such as the weight of soil and a building.
【0018】また、ストッパ17は、拡径掘削機3が最
も大きな直径(W)の拡径部を形成することができる位
置で拡径掘削刃16に当接するように設けてもよいが、
ストッパ17が拡径掘削刃16と当接する位置を変更
し、穴7内に形成する拡径部の直径(W)を小さくする
こともできる。Further, the stopper 17 may be provided so as to abut the enlarged diameter excavation blade 16 at a position where the enlarged diameter excavator 3 can form an enlarged diameter portion having the largest diameter (W).
The position where the stopper 17 contacts the enlarged diameter excavation blade 16 can be changed, and the diameter (W) of the enlarged diameter portion formed in the hole 7 can be reduced.
【0019】土壌や建造物の重量によっては、拡径部は
最大直径である必要がない場合もあり、その場合にはス
トッパ17の位置を変更することにより穴7内に形成す
る拡径部の直径を小さくして掘削量を減少させ、作業時
間を短縮することもできる。Depending on the weight of the soil or the building, the enlarged diameter portion may not need to have the maximum diameter. In this case, the position of the stopper 17 is changed to change the diameter of the enlarged diameter portion formed in the hole 7. The diameter can be reduced to reduce the amount of excavation and shorten the working time.
【0020】[0020]
【発明の効果】本発明の住宅用基礎地盤の湿式柱状体の
製造方法では、拡径掘削機3を備えたロッド1を正回転
させて穴7を掘り下げながら液状固化材を吐出し、その
後ロッド1を所望する位置(例えば図3に示す地表10
から深さh1〜h2の位置,深さh3〜h4の位置等)にお
いて逆回転させるだけで拡径掘削機3を拡径させて穴7
に拡径部(環状の突起・例えば図4の下段拡径部11,
中段拡径部12,上段拡径部13)を形成することがで
き、穴7内に簡単に柱状体30を形成することができ
る。According to the method for manufacturing a wet columnar body of a foundation ground for a house according to the present invention, the rod 1 provided with the large-diameter excavator 3 is rotated forward to discharge the liquid solidified material while digging the hole 7 and thereafter discharging the liquid solidified material. 1 (for example, the ground surface 10 shown in FIG. 3).
From the position of the depth h 1 to h 2, the position of the depth h 3 to h 4 , etc.
The enlarged diameter portion (annular protrusion, for example, the lower enlarged diameter portion 11 in FIG.
The middle-stage enlarged portion 12 and the upper-stage enlarged portion 13) can be formed, and the columnar body 30 can be easily formed in the hole 7.
【図1】 本発明の湿式柱状体を製造するために使用す
る柱状体製造装置の側面略図である。FIG. 1 is a schematic side view of a column manufacturing apparatus used for manufacturing a wet column according to the present invention.
【図2】 図1の柱状体製造装置で地面に穴を空けた状
態を示す一部縦断側面図である。FIG. 2 is a partially longitudinal side view showing a state where a hole is made in the ground by the columnar body manufacturing apparatus of FIG. 1;
【図3】 図2で空けた穴の径を部分的に拡大した状態
を示す一部縦断側面図である。FIG. 3 is a partially longitudinal side view showing a state where the diameter of a hole formed in FIG. 2 is partially enlarged.
【図4】 図3において、穴からロッドを引き上げた状
態を示す一部縦断側面図である。FIG. 4 is a partially longitudinal side view showing a state where a rod is pulled up from a hole in FIG. 3;
【図5】 掘削機のロッドの先端部の拡大図である。FIG. 5 is an enlarged view of a tip portion of a rod of the excavator.
【図6】 図2のVI−VI矢視図である。FIG. 6 is a view taken along the line VI-VI in FIG. 2;
【図7】 図5において、拡径掘削機の拡径掘削刃を拡
径させた状態を示す正面略図である。FIG. 7 is a schematic front view showing a state in which the diameter of the diameter-extending excavator of the diameter-extending excavator in FIG. 5 is expanded.
【図8】 図3のVIII−VIII矢視図である。8 is a view taken in the direction of arrows VIII-VIII in FIG.
1 ロッド 2 攪拌翼 3 拡径掘削機(掘削機構) 4 掘削機 5 支柱 6 液状固化材供給通路 7 穴 8 液状固化材混入土 10 地表 11 下段拡径部(環状の突起) 12 中段拡径部(環状の突起) 13 上段拡径部(環状の突起) 15 ピン 16 掘削刃 17 ストッパ 20 作業車 30 柱状体 100 柱状体製造装置 DESCRIPTION OF SYMBOLS 1 Rod 2 Stirrer blade 3 Expanding excavator (digging mechanism) 4 Excavator 5 Prop 6 Liquid solidified material supply passage 7 Hole 8 Liquid solidified material mixed soil 10 Ground surface 11 Lower enlarged portion (annular projection) 12 Middle enlarged portion (Circular protrusion) 13 Upper-stage enlarged portion (Circular protrusion) 15 Pin 16 Drilling blade 17 Stopper 20 Work vehicle 30 Columnar body 100 Columnar body manufacturing device
Claims (1)
手段とを設け、前記ロッドの正回転時には縮径しかつ逆
回転時には拡径して逆回転時に半径方向に掘削する掘削
機構を前記ロッドの掘削刃の直上に設け、前記ロッドを
正回転させて前記液状固化材供給手段により液状固化材
を吐出しながら前記掘削刃により地面を所定の深さまで
掘り下げ、所望する深さで前記ロッドを逆回転させて前
記掘削機構により地中又は地表における掘削径を部分的
に拡大することにより環状の突起部を備えた柱状体を形
成することを特徴とする住宅用基礎地盤の湿式柱状体の
製造方法。An excavating mechanism for providing an excavating blade and a liquid solidifying material supply means at a tip of a rod, wherein the excavating mechanism reduces the diameter at the time of forward rotation of the rod, expands the diameter at the time of reverse rotation, and excavates in the radial direction at the time of reverse rotation. Provided immediately above the excavating blade of the rod, while the rod is rotated forward and the liquid solidifying material is discharged by the liquid solidifying material supply means, the ground is dug down to a predetermined depth by the excavating blade, and the rod is formed at a desired depth. Manufacture of a wet columnar body for a foundation ground for a house, characterized in that a columnar body having an annular projection is formed by reversely rotating and partially expanding an excavation diameter in the ground or on the surface by the excavation mechanism. Method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000247516A JP2002061177A (en) | 2000-08-17 | 2000-08-17 | Method of manufacturing wet columnar body for dwelling house foundation ground |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000247516A JP2002061177A (en) | 2000-08-17 | 2000-08-17 | Method of manufacturing wet columnar body for dwelling house foundation ground |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2002061177A true JP2002061177A (en) | 2002-02-28 |
Family
ID=18737594
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000247516A Pending JP2002061177A (en) | 2000-08-17 | 2000-08-17 | Method of manufacturing wet columnar body for dwelling house foundation ground |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2002061177A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009033951A (en) * | 2007-07-30 | 2009-02-12 | Daewon Electric Co Ltd | Method of construction work of circular arc shape aerial line electric pole under bracing member using expansion excavation unit for auger crane |
JP2022530697A (en) * | 2020-12-16 | 2022-06-30 | 中▲鉄▼九局集▲団▼▲電▼▲務▼工程有限公司 | Utility pole assembly equipment and construction method for collapsed sections |
-
2000
- 2000-08-17 JP JP2000247516A patent/JP2002061177A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009033951A (en) * | 2007-07-30 | 2009-02-12 | Daewon Electric Co Ltd | Method of construction work of circular arc shape aerial line electric pole under bracing member using expansion excavation unit for auger crane |
JP2022530697A (en) * | 2020-12-16 | 2022-06-30 | 中▲鉄▼九局集▲団▼▲電▼▲務▼工程有限公司 | Utility pole assembly equipment and construction method for collapsed sections |
JP7142983B2 (en) | 2020-12-16 | 2022-09-28 | 中▲鉄▼九局集▲団▼▲電▼▲務▼工程有限公司 | Utility pole assembly device for collapsed section and construction method |
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