JP2649884B2 - Tensile reinforcement construction equipment - Google Patents
Tensile reinforcement construction equipmentInfo
- Publication number
- JP2649884B2 JP2649884B2 JP4306281A JP30628192A JP2649884B2 JP 2649884 B2 JP2649884 B2 JP 2649884B2 JP 4306281 A JP4306281 A JP 4306281A JP 30628192 A JP30628192 A JP 30628192A JP 2649884 B2 JP2649884 B2 JP 2649884B2
- Authority
- JP
- Japan
- Prior art keywords
- core material
- tip
- stirring
- excavation
- ground
- 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
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
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/80—Ground anchors
- E02D5/808—Ground anchors anchored by using exclusively a bonding material
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
- E02D3/126—Consolidating by placing solidifying or pore-filling substances in the soil and mixing by rotating blades
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)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Piles And Underground Anchors (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、切土直後の地盤、ある
いは一般の地盤を補強するための引張り補強体施工装置
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tension reinforcing member construction apparatus for reinforcing ground immediately after cutting or general ground.
【０００２】[0002]
【従来の技術】切り取ったばかりの法面の崩壊を防止す
るため、あるいは一般の地盤を補強するための引張り補
強体を施工する装置は各種開発されている。2. Description of the Related Art Various devices have been developed for installing a tension reinforcing member for preventing collapse of a slope just cut or reinforcing a general ground.
【０００３】[0003]
【発明が解決しようとする問題点】しかし従来の技術で
は、たとえば利用中の鉄道のすぐ近くで工事をするよう
な場合には次のような問題点がある。 ＜イ＞従来の装置では、周囲の地盤に影響を与えずに補
強工事を行うことは困難である。However, the conventional technique has the following problems when, for example, construction is performed in the immediate vicinity of a railway in use. <A> It is difficult for conventional devices to perform reinforcement work without affecting the surrounding ground.
【０００４】＜ロ＞特に大きな直径で土砂を改良する装
置であると、周囲の土砂の崩壊を招きやすく危険であ
る。<B> In the case of an apparatus for improving earth and sand particularly with a large diameter, the surrounding earth and sand are likely to collapse, which is dangerous.
【０００５】＜ハ＞小さな直径で土砂を改良する装置で
あると、危険性は少なくなるが施工数量が膨大となり、
施工に手間と時間がかかる。<C> In the case of an apparatus for improving earth and sand with a small diameter, the danger is reduced, but the number of works is enormous,
Construction takes time and effort.
【０００６】＜ニ＞都市での工事のように、狭い用地や
高さが制限された用地において施工することのできる装
置は少ない。<D> There are few devices that can be constructed on narrow land or land with limited height, such as construction in a city.
【０００７】[0007]
【本発明の目的】本発明はこのような点を改善するため
になされたもので、大口径の引張り補強体を用いて、安
全に地盤を補強することのできる引張り補強体の施工装
置を提供することにある。SUMMARY OF THE INVENTION The object of the present invention is to improve such a point, and to provide an apparatus for constructing a tensile reinforcement capable of safely reinforcing the ground by using a large-diameter tensile reinforcement. Is to do.
【０００８】[0008]
【問題点を解決するための手段】すなわち本発明は、移
動可能な台車と、台車に搭載した掘削攪拌装置と、芯材
とより構成し、掘削攪拌装置は、内部を芯材と固化材液
などの通過が可能な中空回転軸と、その回転軸の周囲に
設けた掘削翼と攪拌翼とよりなり、掘削翼と攪拌翼は、
掘進の際に掘削土と固化材液を攪拌するように回転し、
引き出す際に掘削土と固化材液との攪拌土を掘削孔の先
端方向に押し込むように回転し、中空回転軸の先端には
芯材の通過が可能な先端孔を開口し、芯材は、中空回転
軸内に挿入させた状態において、先端孔を外側から閉塞
可能な係止板を有する、引張り補強体施工装置である。That is, the present invention comprises a movable truck, a digging and stirring device mounted on the trolley, and a core material. The digging and stirring device has a core material and a solidified material liquid inside. It consists of a hollow rotating shaft that can pass such as, a drilling blade and a stirring blade provided around the rotating shaft, the drilling blade and the stirring blade,
When excavating, rotate so as to stir excavated soil and solidified material liquid,
When extracting, mix the excavated soil with the solidified material liquid at the end of the borehole.
Rotate to push in the end direction, open a tip hole through which the core material can pass at the tip of the hollow rotating shaft, and close the tip hole from the outside when the core material is inserted into the hollow rotating shaft. It is a tension reinforcement body construction apparatus which has a possible locking plate.
【０００９】[0009]
【作用】そのために本発明は、 ＜イ＞地盤を掘削しながら掘削土と固化材液を地盤内で
攪拌混合するので、周囲の地盤の緩みや崩落がなく構築
できる引張り補強体施工装置である。<Function> The present invention relates to <a> a tension reinforcing body construction apparatus which can be constructed without excavation soil and solidified material liquid being stirred and mixed in the ground while excavating the ground without loosening or collapse of the surrounding ground. .
【００１０】＜ロ＞掘削攪拌中空ロッドにより引張り補
強体を築造する際、該ロッドの中空を通して芯材を引張
り補強体の先端部の地盤に挿入すると共に、芯材を中心
部に配置することができる引張り補強体施工装置であ
る。<B> When constructing a tension reinforcing body with a hollow rod for excavation and stirring, it is possible to insert a core material into the ground at the distal end of the tensile reinforcement body through the hollow of the rod and to arrange the core material at the center. It is a tension reinforcement body construction device that can be used.
【００１１】＜ハ＞攪拌中空ロッドの引き抜き時に生じ
る芯材周辺の空洞内に、該ロッドの先端部より固化材液
を吐出し、高品質の固化材液で芯材を包囲することによ
って、芯材と周囲の改良土砂とをより強固に密着させる
ことが出来る引張り補強体施工装置である。<C> By discharging the solidified material liquid from the tip of the rod into the cavity around the core material generated when the stirring hollow rod is pulled out, and surrounding the core material with a high-quality solidified material liquid, This is a tensile reinforcement body construction device that can make the material and surrounding improved earth and sand more firmly adhere to each other.
【００１２】[0012]
【実施例１】以下図面を参照しながら本発明の施工装置
の実施例について説明する。 ＜イ＞全体の構成（図３） 本発明の施工装置は、移動可能な台車１と、台車１に搭
載した掘削攪拌中空ロッド６と、芯材３とより構成す
る。台車１は通常の履帯やタイヤによって走行自在の車
体であり、その上部には角度調整自在のガイドレール４
を搭載する。このガイドレール４には、レール上を移動
可能な回転駆動装置５を搭載し、この回転駆動装置５に
は掘削と攪拌を行う、掘削攪拌中空ロッド６を取り付け
る。Embodiment 1 An embodiment of a construction apparatus according to the present invention will be described below with reference to the drawings. <A> Overall Configuration (FIG. 3) The construction apparatus of the present invention includes a movable trolley 1, an excavating and stirring hollow rod 6 mounted on the trolley 1, and a core material 3. The bogie 1 is a vehicle body that can run freely with ordinary crawler tracks and tires, and has a guide rail 4 with an adjustable angle on its upper part.
With. The guide rail 4 is provided with a rotary drive device 5 movable on the rail, and the rotary drive device 5 is provided with a hollow rod 6 for excavation and stirring for excavation and stirring.
【００１３】＜ロ＞掘削攪拌中空ロッド（図２、３） 台車１に搭載した掘削攪拌中空ロッド６は、中空の回転
軸６３の先端の周囲に、掘削翼６１、攪拌翼６２を突設
した装置である。回転軸６３は中空の長いパイプ状の筒
体によって形成する。この回転軸６３の内部の空洞を通
して、回転軸６３の後端から固化材液としてセメントミ
ルクが供給されたり、先端から芯材３が挿入される。そ
のために回転軸６３の先端の周囲には、図２に示すよう
に、セメントミルクの吐出口６５を開設する。この吐出
口６５には逆止弁６６を取り付けておく。したがって回
転軸６３の空洞を通して供給されたセメントミルクはこ
の吐出口を通って掘削土に供給される。また、回転軸６
３の先端部には空洞と連通している先端孔６４を開口す
る。この先端孔６４の径は、後述する芯材３が通過でき
る程度の大きさに形成する。 回転軸６３の先端周辺部
には掘削翼６１を固定する。従って、回転軸６３の回転
にともなって地盤を掘削することができる。掘削翼６１
及び攪拌翼６２は、掘進方向に対して傾斜させて回転軸
６３の先端部周辺に固着する。掘削翼６１は掘削だけで
なく、また攪拌翼６２は掘削土とセメントミルクを攪拌
するだけでなく、掘削攪拌中空ロッド６を引き出す際、
掘削土とセメントミルクの混合物を先端方向に押し戻す
役割もしている。また、共回り防止翼６７は、掘削翼６
１と攪拌翼６２の中間に位置し、掘削攪拌中空ロッド６
に遊嵌されている部材であり、その外径は掘削径よりも
大きい。共回り防止翼６７は掘削範囲外周の地盤により
固定されるため、掘削土とセメントミルクを混合すると
きの邪魔板の作用をし、攪拌翼６２と掘削土との共回り
を防止する機能を果たすものである。<B> Excavation / Stirring Hollow Rod (FIGS. 2 and 3) The excavation / stirring hollow rod 6 mounted on the carriage 1 has a drilling blade 61 and a stirring blade 62 protruding around the tip of a hollow rotary shaft 63. Device. The rotation shaft 63 is formed of a hollow long pipe-like cylinder. Through the cavity inside the rotating shaft 63, cement milk is supplied as a solidifying material liquid from the rear end of the rotating shaft 63, or the core material 3 is inserted from the leading end. For this purpose, as shown in FIG. 2, a discharge port 65 for cement milk is formed around the tip of the rotating shaft 63. A check valve 66 is attached to the discharge port 65. Therefore, the cement milk supplied through the cavity of the rotating shaft 63 is supplied to the excavated soil through this discharge port. The rotating shaft 6
A distal end hole 64 communicating with the cavity is opened at the distal end of 3. The diameter of the distal end hole 64 is formed so as to allow the core material 3 to be described later to pass therethrough. The excavation wing 61 is fixed to the periphery of the tip of the rotating shaft 63. Therefore, the ground can be excavated with the rotation of the rotating shaft 63. Drilling wing 61
The stirring blade 62 is fixed to the vicinity of the tip of the rotating shaft 63 while being inclined with respect to the excavation direction. The drilling wing 61 not only excavates, and the stirring blade 62 not only stirs the excavated soil and cement milk, but also pulls out the excavating and stirring hollow rod 6.
It also serves to push the mixture of excavated soil and cement milk back toward the tip. Further, the co-rotation prevention wing 67 is provided with the excavation wing 6.
1 and a stirring rod 62, which is located between the
, Whose outer diameter is larger than the excavation diameter. Since the co-rotation prevention blade 67 is fixed by the ground around the excavation area, it acts as a baffle plate when mixing the excavated soil and the cement milk, and functions to prevent the stirring blade 62 and the excavated soil from rotating together. Things.
【００１４】＜ハ＞芯材（図１、２） 芯材３は、回転軸６３内に挿入させる部材である。この
芯材３は鉄筋、ＦＲＰ、カーボン、鋼管などを用いる。
引っ張り強度が強く、その強度を長く持続でき、腐食し
難いものが特に望まれる。芯材３の先端側には、回転軸
６３内に挿入させた状態において、先端孔６４を外側か
ら閉塞可能な係止板３１を設け、掘削土が先端孔６４か
ら侵入するのを防止する。この係止板３１は、先端孔６
４から外側へのみ移動可能であるため、掘進中には外れ
ることがない。また、先端孔６４を外側から閉塞できれ
ばよいため、材質、形状は特に規定しないが、芯材３よ
りもやや大径の孔を開設した円盤状の鋼板等が一般的で
ある。係止板３１を芯材３に固定する場合は、係止板３
１が芯材３の先端側にずれないようにする。芯材３が鋼
材の場合は、溶接などで固定する。また、芯材３がＦＲ
Ｐロッドの場合は、接着樹脂によるか、鋼製の定着コ−
ン３２に係止板３１を溶接する方法等が考えられる。次
に、係止板３１の先端部には、定着コ−ン３２を突設す
る。この定着コ−ン３２は、掘削攪拌中空ロッド３を引
き抜く時の周面摩擦抵抗により、芯材３の共抜けを防止
するためのものである。特に形状は限定しなが、例え
ば、図１に示すような筒状体等が考えられる。また、地
山への定着を確実なものにするため、周面に突起等を設
けても良い。<C> Core (FIGS. 1 and 2) The core 3 is a member to be inserted into the rotating shaft 63. As the core material 3, a reinforcing bar, FRP, carbon, steel pipe or the like is used.
What has strong tensile strength, can maintain that strength for a long time, and is hard to corrode is especially desired. A locking plate 31 capable of closing the distal end hole 64 from the outside when the core material 3 is inserted into the rotating shaft 63 is provided on the distal end side of the core material 3 to prevent excavated soil from entering through the distal end hole 64. The locking plate 31 is provided with
Since it can move only from 4 to the outside, it does not come off during excavation. The material and shape are not particularly limited, as long as the tip hole 64 can be closed from the outside, but a disk-shaped steel plate or the like having a hole slightly larger in diameter than the core material 3 is generally used. When fixing the locking plate 31 to the core member 3, the locking plate 3
1 is not shifted to the tip side of the core material 3. When the core material 3 is a steel material, it is fixed by welding or the like. The core material 3 is FR
In the case of a P rod, use an adhesive resin or a steel fixing core.
For example, a method of welding the locking plate 31 to the housing 32 may be considered. Next, a fixing cone 32 protrudes from the tip of the locking plate 31. The fixing cone 32 is used to prevent the core material 3 from coming off due to the friction of the peripheral surface when the excavating and stirring hollow rod 3 is pulled out. Although the shape is not particularly limited, for example, a cylindrical body as shown in FIG. 1 is conceivable. Further, a projection or the like may be provided on the peripheral surface in order to ensure the fixation to the ground.
【００１５】[0015]
【使用方法】次に本発明の装置の使用方法について説明
する。 ＜イ＞装置の移動（図３） 台車１を移動することによって、補強体７を構築する位
置まで接近する。[Method of Use] Next, a method of using the apparatus of the present invention will be described. <A> Movement of device (FIG. 3) By moving the cart 1, the vehicle approaches the position where the reinforcing member 7 is to be constructed.
【００１６】＜ロ＞掘削攪拌と吐出（図２、３） 台車１に搭載した回転駆動装置５を駆動する。すると掘
削攪拌両用の掘削攪拌中空ロッド６の回転軸６３が回転
し、掘削翼６１は地盤を掘削しながら前進する。 この
際、セメントミルクを回転軸６３の吐出口６５から吐出
する。吐出と同時に回転軸６３が回転しているから、掘
削した土とこのセメントミルクが掘削翼６１及び攪拌翼
６２で攪拌される。その結果、土砂と固化材液とが混じ
り合ったモルタル（ソイルセメント）によって構成した
直径の大きい補強体７ができあがる。なお、回転軸６３
内には、予め係止板３１により先端孔６４を閉塞させ
て、芯材３を挿入させておく。そのため、セメントミル
クは先端孔６４から吐出すること無く、周面の吐出口６
５から側方に吐出される。<B> Excavation Stirring and Discharge (FIGS. 2 and 3) The rotary drive device 5 mounted on the carriage 1 is driven. Then, the rotating shaft 63 of the excavation-stirring hollow rod 6 for both excavation-stirring rotates, and the excavation wing 61 advances while excavating the ground. At this time, the cement milk is discharged from the discharge port 65 of the rotating shaft 63. Since the rotating shaft 63 is rotating at the same time as the discharge, the excavated soil and the cement milk are agitated by the excavating blade 61 and the stirring blade 62. As a result, a large-diameter reinforcing member 7 made of mortar (soil cement) in which earth and sand and a solidifying material liquid are mixed is completed. The rotation shaft 63
In the inside, the front end hole 64 is closed by the locking plate 31 in advance, and the core material 3 is inserted. Therefore, the cement milk is not discharged from the distal end hole 64 and the discharge port 6 on the peripheral surface is not discharged.
5 is discharged to the side.
【００１７】＜ハ＞攪拌ロッドの引き抜き（図４） 最深部まで掘削、攪拌が終了したら回転軸６３の回転を
とめる。次に、回転軸６３に掘進時とは反対方向の回転
を与えながら引き抜く。すると、掘削土とセメントミル
クの混合物を先端方向に押し戻しながら、掘削攪拌中空
ロッド６は徐々に後退し、芯材３を残した状態で外部に
引き抜くことができる。このとき、定着コーン３２は、
攪拌されていない固い地山に圧入されているため、定着
コーン３２の周面摩擦抵抗により、芯材３の共抜けを防
止できる。従って、回転軸６３の中心に位置していた芯
材３は、正確にその中心に位置したまま掘削攪拌中空ロ
ッド６を引抜くことができ、芯材３の位置力中心から偏
ることがない。また、逆方向への回転速度と引抜き速度
を適度に調整することにより、改良された補強体７の土
を先端に向けて締固めた状態で掘削攪拌中空ロッド６を
引抜くことができる。<C> Pulling out the stirring rod (FIG. 4) When the excavation to the deepest part and the stirring are completed, the rotation of the rotating shaft 63 is stopped. Next , the rotary shaft 63 is pulled out while giving a rotation in a direction opposite to the direction of the excavation. Then, excavated soil and Seme Ntomiru
The excavating and stirring hollow rod 6 can be gradually retracted while pushing back the mixture of fibers in the tip direction, and can be pulled out with the core material 3 remaining. At this time, the fixing cone 32
Since the core material 3 is pressed into the solid ground that is not agitated, the core material 3 can be prevented from coming off due to the frictional resistance of the peripheral surface of the fixing cone 32. Therefore, the core member 3 located at the center of the rotating shaft 63 can pull out the excavation-stirring hollow rod 6 while being accurately located at the center thereof, and does not deviate from the center of the positional force of the core member 3. In addition, by appropriately adjusting the rotation speed and the pulling speed in the opposite direction, the excavation / stirring hollow rod 6 can be pulled out in a state where the soil of the improved reinforcing member 7 is compacted toward the tip.
【００１８】＜ニ＞セメントミルクの吐出（図４） 掘削攪拌中空ロッド６を引抜くとその体積分だけ土砂が
不足することになり、空洞が生じ周囲の地盤を緩めるこ
とになる。そこで掘削攪拌中空ロッド６の引抜きの際
に、先端孔６４から前方にセメントミルクを吐出する。
掘削攪拌中空ロッド６を引き抜くと、係止板３１がはず
れて先端孔６４が開放されるため、前方へのセメントミ
ルクの吐出が可能となる。これによって、セメントミル
クが不足分の体積を補うことになる。セメントミルクの
吐出した中心部分は攪拌されていないから、芯材３の周
囲は土砂があまり混じらない高品質のセメントミルクで
包囲される。<D> Discharge of Cement Milk (FIG. 4) When the excavation-stirring hollow rod 6 is pulled out, the earth and sand becomes insufficient by the volume thereof, and a cavity is formed to loosen the surrounding ground. Therefore, when the excavation-stirring hollow rod 6 is pulled out, the cement milk is discharged forward from the distal end hole 64.
When the excavating and stirring hollow rod 6 is pulled out, the locking plate 31 is disengaged and the tip hole 64 is opened, so that the cement milk can be discharged forward. This allows the cement milk to make up for the missing volume. Since the central portion from which the cement milk has been discharged is not stirred, the periphery of the core material 3 is surrounded by high-quality cement milk in which earth and sand are not mixed much.
【００１９】＜ホ＞芯材の定着（図５） 掘削攪拌中空ロッド６を引抜くと、その周囲を補強され
た状態の芯材３の基端が孔外に露出する。その基端は、
図５に示すように、切土法面に設置するコンクリート壁
体等に定着したり、あるいはナット等を締付けることに
より、支圧板と土とを馴染ませたりして施工を終了す
る。<E> Fixing of core material (FIG. 5) When the excavating and stirring hollow rod 6 is pulled out, the base end of the core material 3 whose periphery is reinforced is exposed outside the hole. Its base end is
As shown in Fig. 5, fixing to a concrete wall or the like installed on a cut slope , or tightening a nut or the like
Thus , the support plate and the soil are adapted and the construction is completed.
【００２０】[0020]
【発明の効果】本発明は上記したようになるから、次の
ような効果を達成することができる。 ＜イ＞係止板により掘削時に掘削攪拌中空ロッドの先端
孔を閉塞するため、固化材液を吐出口から側方に向けて
吐出することができる。また、掘削攪拌中空ロッドの引
き抜き時には、係止板がはずれて先端孔が開放されるた
め、前方への固化材液の吐出が可能となる。Since the present invention is as described above, the following effects can be achieved. <a> Since the tip hole of the excavation-stirring hollow rod is closed at the time of excavation by the locking plate, the solidified material liquid can be discharged laterally from the discharge port. Further, when the excavating and stirring hollow rod is pulled out, the locking plate is disengaged and the tip hole is opened, so that the solidified material liquid can be discharged forward.
【００２１】＜ロ＞中空のロッドを後退させるときに、
定着コーンが地山に定着して、引き抜き抵抗が発生する
ため、芯材がロッドと共抜けすることがなく、芯材のみ
が地山内に残留することになる。従って、芯材を常に改
良した土砂の中心に位置させることができ、緊張力が作
用した場合にもその引っ張り力を確実に地盤に伝達する
ことができる。<B> When retracting the hollow rod,
Since the fixing cone is fixed to the ground and pull-out resistance is generated, the core material does not come off with the rod, and only the core material remains in the ground. Therefore, it is possible to position always the center of the improved soil core member, tension is created
When used, the pulling force can be reliably transmitted to the ground.
【００２２】＜ハ＞従来の各種工法は、改良体の製造作
業と芯材の挿入作業を、別途に２工程で行っていたた
め、広範囲の施工等の場合には長時間を要していた。本
発明の装置を使用すれば、改良体の製造と芯材の挿入と
を同時に行うことができる。したがって、短時間で広い
範囲の地盤を改良することができる。<C> In the conventional various methods, since the operation of manufacturing the improved body and the operation of inserting the core material are separately performed in two steps, it takes a long time for a wide range of construction. By using the apparatus of the present invention, the production of the improved body and the insertion of the core material can be performed simultaneously. Therefore, a wide range of ground can be improved in a short time.
【００２３】＜ニ＞従来の各種工法では、作業の安全性
を確保するために、補強体の直径が小さく施工されてい
た。そのために周囲の摩擦抵抗を大きくとることができ
なかった。しかし本発明の装置を使用すれば、作業の安
全性を確保できると共に、直径の大きな、したがって周
囲の摩擦抵抗を大きくとれる補強体を構築することがで
きる。<D> In various conventional methods, the diameter of the reinforcing member is reduced to ensure the safety of the work. As a result, it was not possible to increase the frictional resistance of the surroundings. However, by using the device of the present invention, it is possible to ensure the safety of work and to construct a reinforcing member having a large diameter and therefore a large frictional resistance in the surroundings.
【００２４】＜ホ＞従来の補強体に比較して直径の大き
い補強体を地中に構築することができる。したがって施
工の位置をひんぱんに移動して多数の補強体を施工する
従来の装置に比較して効率が良く、広範囲の地盤補強を
行うことができる。<E> A reinforcement having a larger diameter than the conventional reinforcement can be constructed underground. Therefore, compared with the conventional apparatus which frequently moves the construction position and constructs a large number of reinforcements, the ground reinforcement can be performed over a wide area with higher efficiency.
【００２５】＜ヘ＞改良すべき土砂を外部に排土するこ
となく、原位置で攪拌混合作業を行うことができる。し
たがって鉄道や道路、建築物に接近したような場所での
作業のおいても周囲の地盤を緩めたり沈下させる危険が
なく、安全に作業を行うことができる。<F> The agitating and mixing operation can be performed in situ without discharging the earth and sand to be improved to the outside. Therefore, even when working near a railway, a road, or a building, there is no danger of loosening or sinking the surrounding ground, and the work can be performed safely.
【００２６】＜ト＞改良された補強体は、中心部は強度
の高い固化材液の中心補強体、周囲は土砂と固化材液と
の混合体、として構成することができる。したがって付
着力の大きな信頼性の高い、高品質の補強体を地中に構
築することができる。<G> The improved reinforcing member can be constituted as a central reinforcing member of a solidified material liquid having a high strength at a central portion, and a mixture of earth and sand and a solidified material liquid at the periphery. Therefore, a highly reliable and high-quality reinforcing body having a large adhesive force can be constructed underground.
【００２７】＜チ＞掘削攪拌中空ロッドの引抜きの際
に、掘削時と逆方向へ回転させ、回転速度と引抜き速度
を適度に調整することにより、改良土を先端に向けて締
固めた状態でロッドを引抜くことができる。したがって
引抜きによっても掘削攪拌土は緩むことがなく、反対に
圧縮され、強固な補強体を形成することができる。<H> When the excavation-stirring hollow rod is pulled out, it is rotated in the direction opposite to the direction of excavation, and the rotation speed and the pulling speed are adjusted appropriately, so that the improved soil is compacted toward the tip. The rod can be pulled out. Therefore, the excavated agitated soil is not loosened by the drawing, but is compressed on the contrary, and a strong reinforcing body can be formed.
【図１】 芯材の説明図FIG. 1 is an explanatory view of a core material.
【図２】 掘削攪拌装置先端部の説明図FIG. 2 is an explanatory view of a tip of a drilling and stirring device.
【図３】 掘削攪拌工程の説明図FIG. 3 is an explanatory view of a drilling and stirring process.
【図４】 掘削攪拌中空ロッドの引き抜き工程の説明図FIG. 4 is an explanatory view of a step of pulling out a drilling / stirring hollow rod.
【図５】 施工完了状態の説明図FIG. 5 is an explanatory view of a completed construction state.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 田村 幸彦 神奈川県横浜市緑区桂台２−22−15− 106 (72)発明者 中村 和之 神奈川県川崎市麻生区細山４−24−16 (72)発明者 福田 厚生 東京都港区赤坂二丁目４番１号 株式会 社テノックス内 (72)発明者 吉田 茂 東京都港区赤坂二丁目４番１号 株式会 社テノックス内 (72)発明者 上 周史 東京都港区赤坂二丁目４番１号 株式会 社テノックス内 (56)参考文献 特開 昭49−64204（ＪＰ，Ａ) 特開 平４−5313（ＪＰ，Ａ) 特開 平１−146013（ＪＰ，Ａ) 特開 平４−52317（ＪＰ，Ａ) 特開 平１−146014（ＪＰ，Ａ) ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yukihiko Tamura 2-22-15- 106, Katsuradai, Midori-ku, Yokohama City, Kanagawa Prefecture (72) Inventor Kazuyuki Nakamura 4-24-16, Hosoyama Aso-ku, Kawasaki City, Kanagawa Prefecture (72) ) Inventor Fukuda Kosei 2-4-1 Akasaka, Minato-ku, Tokyo Inside Tenox Co., Ltd. (72) Inventor Shigeru Yoshida 2-4-1 Akasaka Akasaka, Minato-ku, Tokyo Inside Tenox Co., Ltd. (72) Inventor Shufumi Tenox Co., Ltd. 2-4-1 Akasaka, Minato-ku, Tokyo (56) References JP-A-49-64204 (JP, A) JP-A-4-5313 (JP, A) JP-A-1- 146013 (JP, A) JP-A-4-52317 (JP, A) JP-A-1-146014 (JP, A)
Claims (1)
能な中空回転軸と、その回転軸の周囲に設けた掘削翼と
攪拌翼とよりなり、掘削翼と攪拌翼は、掘進の際に掘削土と固化材液を攪拌
するように回転し、引き出す際に掘削土と固化材液との
攪拌土を掘削孔の先端方向に押し込むように回転し、 中空回転軸の先端には芯材の通過が可能な先端孔を開口
し、 芯材は、中空回転軸内に挿入させた状態において、先端
孔を外側から閉塞可能な係止板を有する、 引張り補強体施工装置。An excavating / stirring device includes a movable truck, a drilling / stirring device mounted on the truck, and a core material. , Consisting of excavating wings and agitating wings provided around its rotation axis.
When drilling, the excavated soil and solidified material liquid
The agitated soil is rotated so as to be pushed toward the tip of the excavation hole, and a tip hole through which the core material can pass is opened at the tip of the hollow rotary shaft, and the core material is inserted into the hollow rotary shaft. A tension reinforcing member construction device having a locking plate capable of closing a tip hole from outside.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4306281A JP2649884B2 (en) | 1992-10-20 | 1992-10-20 | Tensile reinforcement construction equipment |
| CA002088287A CA2088287C (en) | 1992-02-07 | 1993-01-28 | Reinforcing block for excavation work and method of construction thereof |
| US08/010,148 US5348424A (en) | 1992-02-07 | 1993-01-28 | Reinforcing block for excavation work and method of construction thereof |
| DE69300529T DE69300529T2 (en) | 1992-02-07 | 1993-02-03 | Stiffening block for excavations and method of making the same. |
| EP93101650A EP0556642B1 (en) | 1992-02-07 | 1993-02-03 | Reinforcing block for excavation work and method of construction thereof |
| TW082105663A TW231320B (en) | 1992-02-07 | 1993-07-16 | |
| KR1019930013790A KR100278881B1 (en) | 1992-10-20 | 1993-07-21 | Ground reinforcement and construction method |
| CN93109657A CN1094544C (en) | 1992-10-20 | 1993-08-05 | Reinforcement of foundation and construction of same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4306281A JP2649884B2 (en) | 1992-10-20 | 1992-10-20 | Tensile reinforcement construction equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06128954A JPH06128954A (en) | 1994-05-10 |
| JP2649884B2 true JP2649884B2 (en) | 1997-09-03 |
Family
ID=17955210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4306281A Expired - Lifetime JP2649884B2 (en) | 1992-02-07 | 1992-10-20 | Tensile reinforcement construction equipment |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2649884B2 (en) |
| KR (1) | KR100278881B1 (en) |
| CN (1) | CN1094544C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4672209B2 (en) * | 2001-08-10 | 2011-04-20 | 株式会社テノックス | Soil-cement pillars having a small-diameter steel pipe as a core material and construction method |
| CN1309910C (en) * | 2003-08-12 | 2007-04-11 | 张政丰 | Ready-mixed soil construction method and apparatus thereof |
| KR101900343B1 (en) * | 2016-06-22 | 2018-09-20 | 한국철도기술연구원 | Boring and mixing machine with streamline structure for soil-cement body and the construction method therefor |
| KR101871801B1 (en) * | 2017-11-13 | 2018-07-31 | 조성원 | AUGUR DRILL ASSEMBLY AND Construction method of reinforcEMENT USING THE SAME |
| KR20190126538A (en) | 2018-05-02 | 2019-11-12 | 한국철도기술연구원 | Non- displacement excavating and mixing apparatus and non- displacement excavating and mixing method using drill bit of screw-type |
| CN113047222A (en) * | 2021-02-24 | 2021-06-29 | 堡森(上海)新材料科技有限公司 | Method for preparing ecological restoration revetment by using river sludge through stirring hopper |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5310366B2 (en) * | 1972-10-21 | 1978-04-13 | ||
| JP2554513B2 (en) * | 1987-12-03 | 1996-11-13 | 清水建設株式会社 | Fixing end structure of embedded member |
| JPH01146014A (en) * | 1987-12-03 | 1989-06-08 | Hirose Kk | Core pipe for earth anchor and the like |
| JPH045313A (en) * | 1990-04-20 | 1992-01-09 | Mitsui Constr Co Ltd | Method and device for reinforcing ground |
| JPH0452317A (en) * | 1990-06-19 | 1992-02-20 | Kowa:Kk | Anchor device |
-
1992
- 1992-10-20 JP JP4306281A patent/JP2649884B2/en not_active Expired - Lifetime
-
1993
- 1993-07-21 KR KR1019930013790A patent/KR100278881B1/en not_active IP Right Cessation
- 1993-08-05 CN CN93109657A patent/CN1094544C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1086280A (en) | 1994-05-04 |
| JPH06128954A (en) | 1994-05-10 |
| KR100278881B1 (en) | 2001-01-15 |
| KR950003571A (en) | 1995-02-17 |
| CN1094544C (en) | 2002-11-20 |
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