JP5554953B2 - Unnecessary object removal container in hollow pile - Google Patents

Unnecessary object removal container in hollow pile Download PDF

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JP5554953B2
JP5554953B2 JP2009198816A JP2009198816A JP5554953B2 JP 5554953 B2 JP5554953 B2 JP 5554953B2 JP 2009198816 A JP2009198816 A JP 2009198816A JP 2009198816 A JP2009198816 A JP 2009198816A JP 5554953 B2 JP5554953 B2 JP 5554953B2
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pile
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義人 播磨
直之 山本
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株式会社播磨商事
直之 山本
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Description

本発明は,中空杭内不要物の除去容器に関し,より詳細には,中空の既製杭を使用した埋込み杭工法において,中空杭である基礎杭の中空空間に存在するスライムやセメントミルク等の不要物を除去するための除去容器に関する。   The present invention relates to a container for removing unwanted materials in hollow piles, and more particularly, in an embedded pile method using a hollow ready-made pile, unnecessary slime, cement milk, etc. existing in the hollow space of a foundation pile that is a hollow pile. The present invention relates to a removal container for removing an object.

家屋,集合住宅,その他の構造物の基礎工法において,支持層の深さにまで達する基礎杭を設け,この基礎杭の杭頭上に構造物の基礎を形成する杭基礎工法が,例えば軟弱地盤,液状化地盤等に構造物を構築する際に広く用いられている。   In foundation construction methods for houses, apartment buildings, and other structures, a foundation pile that reaches the depth of the support layer is provided, and the foundation foundation for the structure is formed on the pile head of the foundation pile. It is widely used when constructing structures on liquefied ground.

このような杭基礎における基礎杭の施工方法の一例として,中空の既製杭を使用した埋込み杭工法では,アースオーガ等の掘削機で形成された掘削孔内に,根固め液,周辺固定液としてセメントミルクを注入した後に,鋼管やコンクリート製の中空杭を建て込み,又は掘削孔内に中空杭を建て込んだ後,杭の中空孔を介してセメントミルクを根固め液として注入することにより,支持層に対する根固め,拡大球根の造成,周辺地盤と中空杭との一体化が行われている。   As an example of the foundation pile construction method in such a pile foundation, in the embedded pile construction method using a hollow ready-made pile, the root solidification liquid and the peripheral fixing liquid are placed in the excavation hole formed by an excavator such as an earth auger. After injecting cement milk, a hollow pile made of steel pipe or concrete is built, or after a hollow pile is built in the excavation hole, cement milk is injected as a rooting liquid through the hollow hole of the pile, The support layer is solidified, enlarged bulbs are created, and the surrounding ground and hollow piles are integrated.

そして,このようにして製造された基礎杭上には,前述したように構造物の基礎部分が形成されると共に,この基礎部分が杭頭部に接合されている。   And on the foundation pile manufactured in this way, the foundation part of a structure is formed as mentioned above, and this foundation part is joined to the pile head.

このような杭基礎の構造において,基礎杭の頭部とその上に形成される構造物の基礎部分とは,前述したように一般に接合されていることから,例えば地震等による揺れが生じたときに,基礎杭の杭頭及び杭全体が,当該基礎杭が埋設された地中地盤と上部構造物を支える基礎部分と一体の動きをするため,上部構造物から伝達される水平力や回転力によって杭頭付近に大きな曲げモーメントや剪断力等が集中する。   In such a pile foundation structure, the head of the foundation pile and the foundation part of the structure formed on it are generally joined as described above. In addition, since the pile head and the whole pile move together with the underground ground where the foundation pile is embedded and the foundation supporting the upper structure, the horizontal and rotational forces transmitted from the upper structure As a result, large bending moments and shearing forces are concentrated near the pile head.

特に,軟弱地盤や液状化地盤では,地震等が生じると地盤変位がより大きなものとなるために杭頭部付近に発生する剪断力や曲げモーメントはさらに大きなものとなる。   In particular, in soft ground and liquefied ground, when an earthquake or the like occurs, the ground displacement becomes larger, so the shearing force and bending moment generated near the pile head becomes even larger.

このように,杭基礎の杭頭部の強化は耐震性に優れた構造物を構築する上で重要な要素であるが,中空の既製杭を使用した前述の埋込み杭工法等にあっては,中空杭の中空空間内にセメントミルクを注入すると,掘削孔内に残ったスライム等が比重差で浮き上がり,杭頭付近では,スライムやスライムが混在したセメントミルクが存在するものとなり,このようなスライムやスライムが混在したセメントミルクは,硬化しても強度が低く,杭の強化に貢献するものとはなっていない。   Thus, strengthening the pile head of the pile foundation is an important element in constructing a structure with excellent earthquake resistance, but in the above-mentioned embedded pile method using a hollow ready-made pile, When cement milk is poured into the hollow space of the hollow pile, the slime remaining in the excavation hole will rise due to the difference in specific gravity, and there will be cement milk mixed with slime and slime near the pile head. Cement milk mixed with lime and slime is low in strength even when cured, and does not contribute to strengthening piles.

そこで,本発明の発明者等は,このようなスライムやスライムが混在したセメントミルク等の杭頭部の強化に貢献しない「不要物」を,未だ液状またはゲル状を呈しているときに,これらを杭頭部から取り出して除去すると共に,ここに杭頭部の強化に貢献し得る充填・硬化材を充填することで,基礎杭の杭頭部を強化する方法を提案している(特許文献1参照)。   Therefore, the inventors of the present invention, when these “unnecessary substances” that do not contribute to the strengthening of the pile head such as cement milk mixed with slime, are still in a liquid or gel form, Is taken out from the pile head and removed, and the pile head of the foundation pile is strengthened by filling it with a filling / hardening material that can contribute to strengthening the pile head (Patent Document) 1).

そして,上記の特許文献1において,前述した不要物を中空杭の中空空間内より除去するための除去容器100(図10参照)や,この除去容器100によって不要物が除去された後の中空空間内を洗浄する洗浄装置120(図11参照)についても提案している。   And in said patent document 1, the removal container 100 (refer FIG. 10) for removing the unnecessary object mentioned above from the hollow space of a hollow pile, and the hollow space after an unnecessary object was removed by this removal container 100 A cleaning device 120 (see FIG. 11) for cleaning the inside is also proposed.

この発明の先行技術文献情報としては次のものがある。   Prior art document information of the present invention includes the following.

特開2008−223337号公報公報(請求項1,5,図2,図14,図17〜23)JP 2008-223337 A (Claims 1, 5, FIGS. 2, 14, and 17 to 23)

特許文献1で提案している前述の除去容器100は,図10に示すように円筒状の除去容器本体111の底部に形成された開口113を,除去容器本体111の内部側より被覆する蓋板114を備え,この蓋板114の一端をヒンジ115により揺動可能に取り付けた構成であるために,これを杭頭部より中空杭の中空空間内に挿入して不要物中に沈下させると,除去容器本体111の底部に形成された開口113を介して除去容器本体111内に流入しようとする不要物の流入圧力によって前記開口113を被覆する蓋板114が押し上げられて除去容器本体111内の収容空間112内に不要物が流入する。   The above-described removal container 100 proposed in Patent Document 1 is a cover plate that covers an opening 113 formed at the bottom of a cylindrical removal container body 111 from the inside of the removal container body 111 as shown in FIG. 114, and one end of the cover plate 114 is swingably attached by a hinge 115. When this is inserted into the hollow space of the hollow pile from the pile head and submerged in an unnecessary object, The lid 114 that covers the opening 113 is pushed up by the inflow pressure of the unwanted material that is about to flow into the removal container main body 111 through the opening 113 formed in the bottom of the removal container main body 111, and the inside of the removal container main body 111. Unnecessary materials flow into the accommodation space 112.

一方,前記除去容器100を基礎杭の杭頭部より抜き取るように持ち上げると,前述した蓋板114は自重により,又は開口113を介して流出しようとする不要物の重量によって開口113を閉じ,その結果,除去容器本体111内に回収された不要物を除去容器100と共に基礎杭の中空空間より取り出して回収することができ,これにより不要物の除去回収を比較的容易に行うことができるものとなっている。   On the other hand, when the removal container 100 is lifted so as to be extracted from the pile head of the foundation pile, the above-described cover plate 114 closes the opening 113 by its own weight or by the weight of an unnecessary object to flow out through the opening 113, As a result, it is possible to take out and collect the unwanted matter collected in the removal container main body 111 together with the removal container 100 from the hollow space of the foundation pile, thereby making it possible to remove and collect the unwanted matter relatively easily. It has become.

また,前述した洗浄装置120は,図11に示すように,天板122及び底板123を複数の支持板125により所定の間隔を介して上下に連結し,前記支持板125によって画定される複数の噴射室127を形成すると共に,一端をスクリューロッド内の中空部に連通し,他端を前記噴射室127に臨ませてなる洗浄水の導入路128を備えるものであり,洗浄水の導入路128が形成されているジョイントを,スクリューロッドの先端に接続した状態で中空杭の中空空間内に挿入し,スクリューロッドを介して洗浄水を導入しつつ,前記洗浄装置120を回転させながら中空杭内を上下に移動させると,噴射室127を介して噴射された洗浄水が中空杭の中空空間内壁に向けて噴射されると共に,払拭体126が中空杭の内壁と接触して汚れを掻き取り,これにより中空杭の中空空間内壁に付着した不要物を洗浄して除去することで,その後に充填される充填・硬化材との付着性を向上させることができるものとなっている。   Further, as shown in FIG. 11, the cleaning device 120 described above connects a top plate 122 and a bottom plate 123 up and down with a plurality of support plates 125 at a predetermined interval, and includes a plurality of support plates 125 defined by the support plates 125. An injection chamber 127 is formed, and a cleaning water introduction path 128 is provided with one end communicating with the hollow portion in the screw rod and the other end facing the injection chamber 127. Is inserted into the hollow space of the hollow pile in a state where it is connected to the tip of the screw rod, and the cleaning device 120 is rotated while the cleaning device 120 is rotated while introducing the cleaning water through the screw rod. The cleaning water sprayed through the spray chamber 127 is sprayed toward the hollow space inner wall of the hollow pile, and the wiping body 126 comes into contact with the inner wall of the hollow pile. By scraping this off, it is possible to improve the adhesion with the filling / curing material to be filled afterwards by washing away and removing unnecessary materials adhering to the inner wall of the hollow pile. Yes.

しかし,上記従来の方法では,前述したように不要物の除去と,中空杭の中空空間内壁の洗浄とを,それぞれ別個の装置を使用して,別途の作業工程として行うものであるために作業に長時間を要するだけでなく,不要物の除去工程後,洗浄工程に移行するためには,スクリューロッドの先端部に取り付けられている除去容器100を取り外し,これを前述した洗浄装置120に付け替える作業が必要であり,作業が繁雑となる。   However, in the above conventional method, as described above, the removal of unnecessary materials and the cleaning of the inner wall of the hollow space of the hollow pile are performed as separate work processes using separate devices. In order not only to take a long time, but also to move to the cleaning process after the unnecessary material removal process, the removal container 100 attached to the tip of the screw rod is removed, and this is replaced with the cleaning device 120 described above. Work is necessary and work becomes complicated.

また,不要物を比較的深い位置まで除去する必要がある場合等,不要物の除去に長時間を要すれば,深部側の不要物の除去を行っている間に既に不要物の除去が完了した杭頭側の内壁に付着した汚れが固まる等して,その後の洗浄によっては除去できなくなる場合がある。   In addition, if it is necessary to remove unnecessary materials to a relatively deep position, such as when it takes a long time, the removal of unnecessary materials has already been completed while removing unnecessary materials on the deep side. The dirt adhering to the inner wall on the pile head side hardens, and may not be removed by subsequent cleaning.

更に,洗浄工程は,中空杭の中空空間内壁に洗浄水を噴射して行われるものであるが,前述した構造の洗浄装置120にあっては,隣接する支持板125,125間に形成された噴射室127が比較的大きな空間として形成されるために,洗浄水はこの噴射室127を介して大流量で放出されることから,洗浄水を高速,高圧で噴射するとすれば,洗浄水の消費量が多くなり,また,他の大容量加圧装置を必要とすることを含めて,コストがかかる割には,洗浄水の噴射による洗浄効果を高めることが難しく,さらに,払拭体126等を使用した汚れの掻き落とし等の作業が必要となる。   Further, the cleaning process is performed by spraying cleaning water onto the hollow space inner wall of the hollow pile. In the cleaning device 120 having the above-described structure, the cleaning process is formed between the adjacent support plates 125 and 125. Since the injection chamber 127 is formed as a relatively large space, the cleaning water is discharged at a large flow rate through the injection chamber 127. Therefore, if the cleaning water is injected at a high speed and a high pressure, the consumption of the cleaning water It is difficult to increase the cleaning effect by the injection of cleaning water for the cost including the increase in the amount and the need for another large-capacity pressurizing device. Work such as scraping off used dirt is required.

加えて,洗浄水の噴射によって中空杭の中空空間内壁より洗い落とされた不要物は,洗浄水と共に中空杭の内壁を伝って下方に流れ落ちて中空空間内に溜まり,中空空間内に新たな不要物を発生させることとなるが,このように洗浄によって新たに中空空間内に溜まった洗浄水等の不要物を中空空間内より除去しようとすれば,再度前述した除去容器100を使用してこれを除去するか,又はポンプ等を別途に用意してこれを汲み出す作業が必要となる等,中空空間内に溜まった洗浄水等を除去するための作業が新たに発生して作業工程を増やす結果となる。   In addition, the waste that was washed off from the inner wall of the hollow pile by the jet of washing water flows down along with the inner wall of the hollow pile along with the washing water, and accumulates in the hollow space. In this way, if unnecessary substances such as washing water newly accumulated in the hollow space are removed from the hollow space by washing, the removal container 100 is used again. In order to remove the cleaning water, etc. that have accumulated in the hollow space, such as the need to remove the water or to prepare a pump separately to pump it out, the work process is increased. Result.

なお,以上の説明では,上記の問題点を,基礎杭の杭頭部の強化方法に関する従来技術との関係で説明したが,前述した問題は,杭頭部の強化を行う場合に限定されず,中空杭の中空空間内からの不要物の除去と,中空杭の中空空間内壁の洗浄を伴う各種の中空杭の施工に際しても同様に生じ得る問題である。   In the above explanation, the above problem has been explained in relation to the prior art related to the method of strengthening the pile head of the foundation pile. However, the problem described above is not limited to the case of strengthening the pile head. This is also a problem that can occur in the construction of various types of hollow piles that involve removal of unnecessary objects from the hollow space of the hollow pile and cleaning of the inner wall of the hollow space of the hollow pile.

そこで本発明は,上記従来技術における欠点を解消するために成されたものであり,中空杭の中空空間内に存在する不要物の除去と,中空杭の中空空間内壁の洗浄とを同時に行うことができる中空杭内不要物の除去容器を提供することにより,従来別々の工程で行われていた不要物の除去と,中空空間内壁の洗浄とを一工程で行うことを可能にし,かつ,洗浄時に中空空間内に溜まった洗浄水等の新たな不要物についても,別途特別な工程を設けることなく除去できるようにすることを目的とする。   Therefore, the present invention has been made to eliminate the above-described drawbacks of the prior art, and is capable of simultaneously removing unnecessary materials existing in the hollow space of the hollow pile and cleaning the inner wall of the hollow space of the hollow pile. By providing a container for removing unnecessary materials in hollow piles, it is possible to remove unnecessary materials and clean the inner wall of the hollow space in one process, which has been performed in separate processes. It is an object of the present invention to be able to remove new unnecessary materials such as cleaning water that sometimes accumulate in the hollow space without providing a special process.

また,本発明の別の目的は,上記の課題に加え,洗浄水の使用量を低減しつつ,十分な洗浄効果を上げることができる中空杭内不要物の除去容器及びメンテナンス性に優れた中空杭内不要物の除去容器を提供することを目的とする。   In addition to the above-mentioned problems, another object of the present invention is to provide a container for removing unnecessary objects in the hollow pile that can increase the cleaning effect while reducing the amount of cleaning water used, and a hollow having excellent maintainability. It aims at providing the removal container of the unnecessary thing in a pile.

上記目的を達成するために,本発明は,中空杭30の中空空間32内に存在する液状乃至はゲル状の不要物を前記中空空間32内より除去するための除去容器10において,
前記除去容器10を,
内部に不要物の収容空間12を備え,かつ,底部に前記収容空間12内に前記不要物を導入するための開口13を備えたケーシング11と,
前記ケーシング11の底部に設けた前記開口13を,前記除去容器を前記不要物中に沈下させた際の前記不要物の流入圧力によって開放可能と成すように前記ケーシング11の内部側より覆う,前記開口を開閉自在に被覆する蓋板14と,
例えば,前記蓋板14の一端を揺動可能に前記ケーシング11に係止するヒンジ15を備えたものとして構成することができ,前記蓋板14による前記開口13の被覆時,前記ケーシング11が液状乃至はゲル状の前記不要物を汲み上げ可能な液密性を有し,
更に,前記ケーシング11に,掘削機のスクリューロッド28の下端に連結可能な接合具19をその上端部分に設けると共に,洗浄水を前記中空杭30の中空空間32内壁に向けて噴射する噴射孔20(20’)と,前記噴射孔20(20’)を前記スクリューロッド28内に設けられた洗浄水の流路に連通する給水路(19a,26,24:図6参照)を設けたことを特徴とする(請求項1,5)。
In order to achieve the above-mentioned object, the present invention provides a removal container 10 for removing liquid or gel-like unwanted matter present in the hollow space 32 of the hollow pile 30 from the hollow space 32.
The removal container 10 is
A casing 11 having an accommodating space 12 for unnecessary materials inside, and an opening 13 for introducing the unnecessary materials into the accommodating space 12 at the bottom;
The opening 13 provided at the bottom of the casing 11 is covered from the inner side of the casing 11 so as to be opened by the inflow pressure of the unnecessary material when the removal container is submerged in the unnecessary material, A cover plate 14 covering the opening so as to be freely opened and closed;
For example, one end of the lid plate 14 can be configured to include a hinge 15 that is swingably locked to the casing 11. When the opening 13 is covered with the lid plate 14, the casing 11 is liquid. Or has a liquid-tight property that can pump up the gel-like unwanted matter.
Further, a joint 19 that can be connected to the lower end of the screw rod 28 of the excavator is provided at the upper end portion of the casing 11, and the injection hole 20 that injects cleaning water toward the inner wall of the hollow space 32 of the hollow pile 30. (20 ′) and a water supply channel (19a, 26, 24: see FIG. 6) that communicates the injection hole 20 (20 ′) with the flow path of the cleaning water provided in the screw rod 28. It is characterized (claims 1 and 5).

前記構成の除去容器10において,前記噴射孔20(20’)を直径1〜3mmとすることが好ましい(請求項2)。   In the removal container 10 having the above configuration, it is preferable that the injection hole 20 (20 ') has a diameter of 1 to 3 mm.

この噴射孔20は,前記ケーシング11の肉厚を貫通して形成するものとしても良く(請求項3),又は,前記ケーシング11の外周面にネジ孔22を形成し,このネジ孔22に螺合する外周にネジを備えるボルト状部材21に,該ボルト状部材21を軸線方向に貫通する貫通孔20’を形成し,この貫通孔20’を前記噴射孔20とするものとしても良い(請求項4)。   The injection hole 20 may be formed through the thickness of the casing 11 (Claim 3), or a screw hole 22 is formed on the outer peripheral surface of the casing 11, and the screw hole 22 is screwed. A through-hole 20 ′ that penetrates the bolt-shaped member 21 in the axial direction is formed in the bolt-shaped member 21 having a screw on the outer periphery to be joined, and the through-hole 20 ′ may be used as the injection hole 20. Item 4).

以上で説明した本発明の構成により,本発明の中空杭内不要物の除去容器10によれば,以下の顕著な効果を得ることができた。   According to the configuration of the present invention described above, according to the removal container 10 for unnecessary matter in the hollow pile of the present invention, the following remarkable effects can be obtained.

中空杭30の中空空間32内に存在する不要物を除去する際,同時に洗浄水を中空空間の内壁に向けて噴射することのできる除去容器10を提供することができた。   It was possible to provide the removal container 10 capable of spraying cleaning water toward the inner wall of the hollow space at the same time when removing unnecessary materials present in the hollow space 32 of the hollow pile 30.

その結果,この除去容器10を使用することで,不要物の除去と,中空杭30の中空空間32内の洗浄とを同時に行うことができ,工程数の減少による作業効率の向上を図ることができた。   As a result, by using this removal container 10, it is possible to simultaneously remove unnecessary materials and clean the hollow space 32 of the hollow pile 30, thereby improving work efficiency by reducing the number of processes. did it.

また,前記構成の不要物除去容器10によって中空杭30の中空空間32内の洗浄を,不要物の回収と同時に行うことで,内壁に付着した不要物等の汚れが固まる前に容易に洗浄水の噴射によって除去できると共に,洗浄によって新たに中空空間32内に溜まった洗浄水等の不要物についても,別途に除去,回収工程を設けることなしに,これを除去することが可能であった。   In addition, by cleaning the hollow space 32 of the hollow pile 30 simultaneously with the recovery of the unnecessary material by the unnecessary material removing container 10 having the above-described configuration, the cleaning water can be easily washed before the dirt such as the unnecessary material adhering to the inner wall is hardened. It is possible to remove unnecessary substances such as washing water newly accumulated in the hollow space 32 by washing without providing a separate removing and collecting step.

さらに,ケーシング11に設けた噴射孔20(20’)の直径を1〜3mmとしたことで,噴射孔20(20’)を通過する洗浄水の流量,従って洗浄水の使用量を減少させることができただけでなく,前述のように比較的小径に形成された噴射孔20(20’)より洗浄水を噴射することで,洗浄水を高速かつ高圧で噴射することができ,その結果,洗浄水の吹き付けによる洗浄効果が向上して,少ない洗浄水の使用量で,高い洗浄効率を得ることができた。   Further, by setting the diameter of the injection hole 20 (20 ′) provided in the casing 11 to 1 to 3 mm, the flow rate of cleaning water passing through the injection hole 20 (20 ′), and hence the amount of cleaning water used can be reduced. In addition, the cleaning water can be injected at a high speed and a high pressure by injecting the cleaning water from the injection hole 20 (20 ′) formed with a relatively small diameter as described above. The cleaning effect by spraying the cleaning water was improved, and high cleaning efficiency could be obtained with a small amount of cleaning water used.

加えて,ボルト状部材21に形成した貫通孔20’によって前記噴射孔20を形成するものとした場合には,噴射孔20(20’)の目詰まりや,噴射孔20(20’)が摩耗等により孔径を拡大等した場合であっても,ボルト状部材21の交換という比較的簡単な作業によってこれを解消することができ,メンテナンスの作業性を向上させることができた。   In addition, when the injection hole 20 is formed by the through-hole 20 ′ formed in the bolt-shaped member 21, the injection hole 20 (20 ′) is clogged or the injection hole 20 (20 ′) is worn. Even when the hole diameter is enlarged by the above, this can be solved by a relatively simple work of replacing the bolt-shaped member 21 and the maintenance workability can be improved.

本発明の除去容器の正面図。The front view of the removal container of this invention. 本発明の除去容器の右側面図。The right view of the removal container of this invention. 本発明の除去容器の平面図。The top view of the removal container of this invention. 図1のIV−IV線断面図。IV-IV sectional view taken on the line of FIG. 図1のV−V線断面図。The VV sectional view taken on the line of FIG. 図1のVI−VI線断面図。The VI-VI sectional view taken on the line of FIG. 図1のVII−VII線断面図。The VII-VII sectional view taken on the line of FIG. 本発明の除去容器の底面図。The bottom view of the removal container of this invention. 本発明の除去容器を使用した不要物の除去及び杭内洗浄の説明図であり,(A)は未処理の状態,(B)は除去容器を挿入した状態,(C)は,(B)の状態から除去容器を抜き取った後の状体,(D)は再度除去容器を挿入すると共に,洗浄水の噴射による洗浄を行っている状態,(E)は,(D)の状態から除去容器を抜き取った後の状態。It is explanatory drawing of the removal of an unnecessary thing using the removal container of this invention, and washing | cleaning in a pile, (A) is an untreated state, (B) is the state which inserted the removal container, (C) is (B) The state after the removal container is extracted from the state of (1), (D) is the state where the removal container is inserted again and cleaning is performed by spraying the washing water, (E) is the removal container from the state of (D) The state after extracting. 従来(特許文献1)の除去容器の正面断面図。Front sectional drawing of the conventional removal container (patent document 1). 従来(特許文献1)の洗浄装置の斜視図。The perspective view of the conventional washing | cleaning apparatus (patent document 1).

次に,本発明の実施形態につき添付図面を参照しながら以下説明する。   Next, embodiments of the present invention will be described below with reference to the accompanying drawings.

本発明の除去容器10は,前述したように中空杭30の中空空間32内に存在するスライムやセメントミルク等の不要物を除去すると共に,中空杭の中空空間32の内壁に付着した不要物を洗浄するために使用するもので,この除去容器10は,杭頭部31より前記中空杭30の中空空間32内に挿入可能なサイズに形成されたケーシング11を有する。   The removal container 10 according to the present invention removes unnecessary materials such as slime and cement milk existing in the hollow space 32 of the hollow pile 30 as described above, and removes unnecessary materials attached to the inner wall of the hollow space 32 of the hollow pile 30. This removal container 10 is used for cleaning, and has a casing 11 formed in a size that can be inserted into the hollow space 32 of the hollow pile 30 from the pile head 31.

図示の実施形態においてこのケーシング11は,中空杭30の中空空間32内に挿入可能な直径を有する円筒状に形成しているが,この除去容器10のケーシング11の径あるいは形状は,図示のように円筒状に限定されず,例えば,使用する既製杭の内部形状等に対応し,各種の形状に形成することが可能である。   In the illustrated embodiment, the casing 11 is formed in a cylindrical shape having a diameter that can be inserted into the hollow space 32 of the hollow pile 30, but the diameter or shape of the casing 11 of the removal container 10 is as illustrated. It is not limited to a cylindrical shape, and for example, it can be formed into various shapes corresponding to the internal shape of the ready-made pile to be used.

このケーシング11のサイズは,一例として最大で,全長3000mm程度,直径1400mm程度に形成することができ,不要物除去の対象とする中空杭30の内径,不要物の除去を行う深さ等に応じて,上記範囲内において適宜のサイズに形成可能である。   The casing 11 has a maximum size as an example, and can be formed to have a total length of about 3000 mm and a diameter of about 1400 mm, depending on the inner diameter of the hollow pile 30 to be removed of unnecessary objects, the depth at which unnecessary objects are removed, and the like. Thus, it can be formed in an appropriate size within the above range.

この除去容器10のケーシング11内部には,図1,2に示すように除去すべきスライムやセメントミルク等の不要物を回収するための収容空間12が形成されている。   A housing space 12 is formed in the casing 11 of the removal container 10 for collecting unnecessary substances such as slime and cement milk to be removed as shown in FIGS.

そして,ケーシング11の底部に,不要物をこのケーシング11内の収容空間12に導入するための開口13が形成され,更に,この開口13を,ケーシング11の内側より被覆する蓋板14が設けられている(図1参照)。   An opening 13 is formed at the bottom of the casing 11 for introducing unnecessary materials into the accommodation space 12 in the casing 11, and a cover plate 14 is provided to cover the opening 13 from the inside of the casing 11. (See FIG. 1).

なお,図1において,この蓋板14は,「14(開位置)」,「14(閉位置)」として2箇所に表されているが,これらは,単一の蓋板14の「開位置」と「閉位置」とをそれぞれ示したものである。   In FIG. 1, the cover plate 14 is represented in two places as “14 (open position)” and “14 (closed position)”, but these are the “open position” of the single cover plate 14. "And" closed position "respectively.

このように,図示の実施形態では,1つの除去容器10に対して単一の蓋板14を設ける構成を示したものであるが,例えば1つの開口13に対して二枚の蓋板を,所謂「観音開き」となるように取り付けても良く,又は複数設けた開口13のそれぞれに蓋板14を設ける等,開口13を開閉可能なものであれば,蓋板14の取付個数を特に限定するものではない。   As described above, the illustrated embodiment shows a configuration in which a single cover plate 14 is provided for one removal container 10. For example, two cover plates are provided for one opening 13. The number of cover plates 14 may be particularly limited as long as the openings 13 can be opened and closed, such as a so-called “spreading”, or by providing a cover plate 14 for each of the plurality of openings 13. It is not a thing.

前述の開口13は,除去容器10をその底部側より中空杭30の中空空間32内に挿入した際に,液状ないしはゲル状のスライムやセメントミルク等の不要物を導入可能な位置であれば,底部のいずれの位置に設けても良い。   If the opening 13 is a position where an unnecessary substance such as liquid or gel-like slime or cement milk can be introduced when the removal container 10 is inserted into the hollow space 32 of the hollow pile 30 from the bottom side, You may provide in any position of a bottom part.

また,前述の蓋板14は,前記開口13を閉塞可能な大きさを有すると共に,前記不要物の流入圧力によって前記開口13を開放可能と成すように前記収容空間12内に揺動可能に固定されており,図示の実施形態にあっては,その一端を底面にヒンジ15により固定して,前記開口13の閉塞時,蓋板14が前記開口13を内部より覆うことにより閉塞すると共に,前記ヒンジ15を支点として揺動することにより,底面上で立ち上がり,前記開口13を開放することができるように構成されている。   The lid plate 14 has a size capable of closing the opening 13 and is slidably fixed in the accommodating space 12 so that the opening 13 can be opened by the inflow pressure of the unnecessary material. In the illustrated embodiment, one end is fixed to the bottom surface by a hinge 15, and when the opening 13 is closed, the cover plate 14 is closed by covering the opening 13 from the inside, and the By swinging about the hinge 15 as a fulcrum, the opening 13 can be opened by standing on the bottom surface.

なお,図1,図7,図8中,Sはストッパであり,前述の蓋板14の開放時,この蓋板14が,90度未満の開放角度となるように蓋板14の揺動範囲を規制する。   1, 7, and 8, S is a stopper, and when the cover plate 14 is opened, the swing range of the cover plate 14 is such that the cover plate 14 has an opening angle of less than 90 degrees. To regulate.

例えば図1に示す実施形態において,蓋板14の開放角度が90度を超え,その先端(自由端)がケーシング11の内壁と接触する迄,図中左側に揺動としたとすると,蓋板14はこの位置で安定して開口13を被覆する方向に揺動しなくなるおそれがある。   For example, in the embodiment shown in FIG. 1, if the opening angle of the cover plate 14 exceeds 90 degrees and the tip (free end) of the cover plate 14 contacts with the inner wall of the casing 11, There is a possibility that 14 does not swing in the direction of covering the opening 13 stably at this position.

しかし,図1に示すようにストッパSによって蓋板14の開放角を90度未満の位置(本実施形態にあっては85度)で規制することにより,不要物の導入圧力が無くなった際,蓋板14は自重により,または,中空杭の中空空間より抜き取る際の不要物の重量により,確実に開口13側に倒れて開口13を塞ぐ。   However, as shown in FIG. 1, when the opening angle of the cover plate 14 is restricted by a position less than 90 degrees (85 degrees in the present embodiment) by the stopper S, when the introduction pressure of unnecessary materials is lost, The lid plate 14 falls down to the side of the opening 13 reliably and closes the opening 13 due to its own weight or due to the weight of unnecessary matter when it is extracted from the hollow space of the hollow pile.

前記除去容器10のケーシング11内に形成された収容空間12は,ケーシング11内に不要物が導入された際に,この不要物の導入量に応じて収容空間12内の空気を排出することができるよう,その上端部分が開放されており,本実施形態にあっては,ケーシング11自体を,上端を開放した円筒体により形成することで(図3参照),このような空気の排出を可能にしている。   The accommodation space 12 formed in the casing 11 of the removal container 10 can discharge air in the accommodation space 12 according to the amount of introduction of the unnecessary material when the unnecessary material is introduced into the casing 11. The upper end portion of the casing 11 is open so that the air can be discharged. In this embodiment, the casing 11 itself is formed of a cylindrical body with the upper end open (see FIG. 3), so that such air can be discharged. I have to.

以上のように構成された除去容器10のケーシング11上端には,この除去容器10を,オーガマシン等の掘削機のスクリューロッド28の先端に連結可能とするための接合具19が設けられている。   At the upper end of the casing 11 of the removal container 10 configured as described above, a connector 19 is provided so that the removal container 10 can be connected to the tip of the screw rod 28 of an excavator such as an auger machine. .

本実施形態にあっては,円筒体であるケーシング11の上端開口内に,ケーシング11の内周間に掛け渡された支持材18を設け,この支持材18に前述の接合具19を取り付けている。   In the present embodiment, a support member 18 is provided between the inner periphery of the casing 11 in the upper end opening of the casing 11 that is a cylindrical body, and the connecting member 19 is attached to the support member 18. Yes.

図3に示す実施形態にあっては,支持材18は,断面H字状の鉄製部材,例えば,所謂H型鋼をもちいることができ,ケーシング11の上部開口内周間を直径方向に掛け渡す第1の支持材18aと,この第1の支持材18aの長さ方向の中央部分とケーシング11の内周間に掛け渡された第2及び第3の支持材18b,18cによって,平面視において十字状に直交する前記支持材18を形成し,ケーシング11の上端開口を塞ぐことなく,ケーシング11上端部の補強と接合具19の取り付けとを可能としている。   In the embodiment shown in FIG. 3, the support member 18 can use an iron member having an H-shaped section, for example, a so-called H-shaped steel, and spans the inner periphery of the upper opening of the casing 11 in the diametrical direction. In a plan view, the first support member 18a and the second and third support members 18b and 18c spanned between the lengthwise central portion of the first support member 18a and the inner periphery of the casing 11 The support member 18 that is orthogonal to the cross shape is formed, so that the upper end of the casing 11 can be reinforced and the connector 19 can be attached without closing the upper end opening of the casing 11.

このように構成された支持材18の中央部分に設けられた前述の接合具19として,本実施形態にあっては掘削機のスクリューロッド28のジョイント部に使用されている,六角柱状の継手(オス)を固着している。   As the above-described joint 19 provided in the central portion of the support member 18 configured as described above, in this embodiment, a hexagonal column-shaped joint (used in a joint portion of a screw rod 28 of an excavator) ( Male).

このような接合具19を設けることにより,スクリューロッド28の先端に設けられた継手(メス)内に前記接合具19を挿入すると共に,スクリューロッド28に設けられた継手(メス)に設けたピン孔と,前記接合具19に設けたピン孔に共に係止ピンを挿入する等することで,除去容器10を容易にスクリューロッド28の先端に取り付けることができると共に,スクリューロッド28内に形成された洗浄水の流路(図示せず)と,前記接合具19内に形成された洗浄水の導入路19aとを連通させることが可能となる。   By providing such a connector 19, the connector 19 is inserted into a joint (female) provided at the tip of the screw rod 28 and a pin provided on a joint (female) provided on the screw rod 28. The removal container 10 can be easily attached to the tip of the screw rod 28 by inserting a locking pin into the hole and the pin hole provided in the connector 19, and formed in the screw rod 28. In addition, the cleaning water flow path (not shown) and the cleaning water introduction path 19 a formed in the connector 19 can be communicated with each other.

前述のケーシング11は,更に,中空杭30の中空空間32内で洗浄水を噴射し,杭内周面の洗浄を行うための噴射孔20及びこの噴射孔20に対して洗浄水を導入するための給水路を備えている。   The casing 11 further injects cleaning water into the hollow space 32 of the hollow pile 30 and introduces cleaning water into the injection hole 20 for cleaning the inner peripheral surface of the pile. It has a water supply channel.

この洗浄水の噴射孔20は,洗浄水を噴射して中空杭30の中空空間32内壁に付着した不要物,その他の汚れを洗浄,除去し得るものであれば,その径,形状,形成個数,配置等は如何なる構成としても良く,本実施形態にあっては,この噴射孔20をケーシング11の肉厚を貫通する直径1〜3mm程度の貫通孔として形成し(図1,図2参照),一例として除去容器10のケーシング11の長さを3000mmとした図示の実施例にあっては,ケーシング11の長さ方向に15個(図2)及び17個(図1)の噴射孔20を直線状に所定間隔で並べて配置した噴射孔の列を,円周方向に4列等間隔に配置して,合計64個の噴射孔を設けている。   The washing water injection hole 20 has a diameter, a shape, and a number of formations, as long as it can wash and remove unnecessary substances and other dirt adhered to the inner wall of the hollow space 32 of the hollow pile 30 by jetting the washing water. In this embodiment, the injection hole 20 is formed as a through hole having a diameter of about 1 to 3 mm that penetrates the thickness of the casing 11 (see FIGS. 1 and 2). As an example, in the illustrated embodiment in which the length of the casing 11 of the removal container 10 is 3000 mm, 15 (FIG. 2) and 17 (FIG. 1) injection holes 20 are provided in the length direction of the casing 11. A total of 64 injection holes are provided by arranging four rows of injection holes arranged in a straight line at predetermined intervals in the circumferential direction at four equal intervals.

このように,噴射孔20の直径を1〜3mmという比較的小径なものとしたことにより,この噴射孔20を介して噴射される洗浄水を高速かつ高圧にて中空空間32の内壁に噴射,衝突させることができ,比較的少量の洗浄水によって中空空間内壁の洗浄を効果的に行うことができる。   Thus, by making the diameter of the injection hole 20 relatively small, such as 1 to 3 mm, the cleaning water injected through the injection hole 20 is injected onto the inner wall of the hollow space 32 at high speed and high pressure. The inner wall of the hollow space can be effectively cleaned with a relatively small amount of cleaning water.

なお,噴射孔20は,ケーシング11の肉厚を直接貫通して形成することもできるが,この噴射孔20を,例えば図2中に拡大図として示すように,軸芯方向に1〜3mm程度の貫通孔20’が形成されたボルト状部材21を,ケーシング11の肉厚を貫通して形成されたネジ孔22に螺合し,ボルト状部材21に設けた貫通孔20’によって前述の噴射孔20を形成しても良い。   The injection hole 20 can also be formed directly through the thickness of the casing 11, but the injection hole 20 is about 1 to 3 mm in the axial direction as shown in an enlarged view in FIG. 2, for example. The bolt-shaped member 21 in which the through-hole 20 ′ is formed is screwed into the screw hole 22 formed through the thickness of the casing 11, and the above-described injection is performed by the through-hole 20 ′ provided in the bolt-shaped member 21. The hole 20 may be formed.

このように,ボルト状部材21に形成された貫通孔20’を前述した噴射孔20として使用することにより,例えば噴射孔20(20’)に目詰まりが生じ,又は摩耗等によって噴射孔20(20’)の孔径が拡大した場合に,このボルト状部材21を交換するだけで噴射孔を正常な状態に戻すことができる。そのため,スライムやセメントミルク中に没した状態で使用され,スライムやセメントミルクによって噴射孔20(20’)の目詰まりが生じ易い本発明の除去容器10のメンテナンスの際の作業性が大幅に向上する。   In this way, by using the through hole 20 ′ formed in the bolt-shaped member 21 as the above-described injection hole 20, the injection hole 20 (20 ′) is clogged, or the injection hole 20 ( When the hole diameter of 20 ′) is enlarged, the injection hole can be returned to the normal state only by replacing the bolt-shaped member 21. Therefore, it is used in a state where it is immersed in slime or cement milk, and the workability at the time of maintenance of the removal container 10 of the present invention, which easily causes clogging of the injection hole 20 (20 ') due to slime or cement milk, is greatly improved. To do.

この噴射孔20(20’)に対して洗浄水を供給する給水路は,各噴射孔20(20’)に対して洗浄水を供給し得るものであれば如何なる構成であっても良いが,図示の実施形態にあっては,前述の噴射孔20(20’)に対峙する位置で,ケーシング11の内周側に断面L字状のアングル材23を,その角部がケーシングの中心を向くように取り付け(図4参照),このアングル材23とケーシング11の内周面によって画成された洗浄水の給水路24を形成すると共に,ケーシング11の上部中央に設けた接合具19内に形成された前述の導入路19aと前記各給水路24間を連通する分配給水路26が設けられており(図6参照),前記導入路19a,分配給水路26,給水路24によって,スクリューロッド28内に形成された図示せざる洗浄水の流路と,前記噴射孔20(20’)とを連通する,洗浄水の給水路が形成されている。   The water supply path for supplying cleaning water to the injection holes 20 (20 ′) may have any configuration as long as it can supply cleaning water to the injection holes 20 (20 ′). In the illustrated embodiment, an angle member 23 having an L-shaped cross section is provided on the inner peripheral side of the casing 11 at a position facing the above-described injection hole 20 (20 ′), and the corner portion thereof faces the center of the casing. (See FIG. 4), the water supply path 24 of the cleaning water defined by the angle member 23 and the inner peripheral surface of the casing 11 is formed, and is formed in the connector 19 provided in the upper center of the casing 11. A distribution water supply path 26 communicating between the introduction path 19a and the water supply paths 24 is provided (see FIG. 6), and the screw rod 28 is formed by the introduction path 19a, the distribution water supply path 26, and the water supply path 24. Figure formed inside A flow path of the washing water but to the communicating the injection holes 20 (20 '), the water supply path of the washing water are formed.

本実施形態にあっては,この分配給水路26として,支持材18a,18b,18cの裏面にそれぞれアングル材25を取り付けて,平面視において接合具19の裏面位置を中心として十字状を成す分配給水路26を形成し,この分配給水路26それぞれの端部を前記各給水路24の上端に連通している(図5,6参照)。   In this embodiment, as the distribution water supply channel 26, the angle members 25 are attached to the back surfaces of the support members 18a, 18b, and 18c, respectively, and the distribution is formed in a cross shape with the back surface position of the connector 19 in the plan view. A water supply channel 26 is formed, and each end of the distribution water supply channel 26 communicates with the upper end of each water supply channel 24 (see FIGS. 5 and 6).

なお,前記実施形態においては,分配給水路26,各給水路24をアングル材25により構成しているが,これらをステンレス製パイプなどからなる中空円筒体など他の材料および形状の部材により,それぞれ,角部において連通しあるいは,連続する一のパイプを折曲して形成してもよい。  In the above-described embodiment, the distribution water supply channel 26 and each water supply channel 24 are constituted by the angle members 25. However, these are formed by members of other materials and shapes such as a hollow cylindrical body made of a stainless steel pipe or the like. , It may be formed by bending one continuous pipe or communicating at the corner.

そして,前記分配給水路26の中心位置に,接合具19に形成された導入路19aを連通すると共に(図6参照),各給水路24の下端を,それぞれ閉塞端としている。   Then, the introduction channel 19a formed in the connector 19 is communicated with the central position of the distribution water supply channel 26 (see FIG. 6), and the lower ends of the respective water supply channels 24 are closed ends.

このように構成することで,スクリューロッド28を介して供給された洗浄水は,接合具19に形成された導入路19aを介して導入され,分配給水路26によって各給水路24に分配供給されると共に,各給水路24に連通した噴射孔20(20’)を介して,中空杭30の中空空間32内壁に向けて噴射される。   With this configuration, the cleaning water supplied via the screw rod 28 is introduced via the introduction path 19 a formed in the connector 19, and distributed and supplied to each water supply path 24 by the distribution water supply path 26. At the same time, the water is injected toward the inner wall of the hollow space 32 of the hollow pile 30 through the injection holes 20 (20 ′) communicating with the respective water supply channels 24.

なお,図1,2中の符号27はドレン孔であり,このドレン孔27を塞ぐ栓であるドレンボルトの着脱によって開閉可能に構成されていると共に,ドレン孔27を開放することにより,給水路24中に溜まった洗浄水の抜き取りや,ドレン孔27より高圧水を導入することで,給水路24内部の洗浄等を行うことができるように構成されている。   Reference numeral 27 in FIGS. 1 and 2 denotes a drain hole, which can be opened and closed by attaching and detaching a drain bolt that is a plug that closes the drain hole 27, and is opened by opening the drain hole 27. The inside of the water supply channel 24 can be cleaned by extracting the cleaning water accumulated in the water 24 or introducing high-pressure water from the drain hole 27.

以上に,本発明の除去容器10の一実施形態について説明したが,除去容器10の構成は,図1〜8を参照して説明した構成に限定されず,各種の変更が可能である。   Although one embodiment of the removal container 10 of the present invention has been described above, the configuration of the removal container 10 is not limited to the configuration described with reference to FIGS. 1 to 8 and various modifications can be made.

次に,前述した除去容器10の使用方法の一例を図9を参照して説明する。   Next, an example of the usage method of the removal container 10 mentioned above is demonstrated with reference to FIG.

図9中の30は,既知の埋込み杭工法による施工途中の基礎杭(中空杭)であり,この段階において,掘削孔内に建て込んだ中空杭30内には,硬化前の液状又はゲル状のスライムやセメントミルク等の不要物が存在している〔図9(A)〕。   9 in FIG. 9 is a foundation pile (hollow pile) in the middle of construction by a known embedded pile method. At this stage, the hollow pile 30 built in the excavation hole has a liquid or gel-like shape before hardening. Unnecessary items such as slime and cement milk are present (FIG. 9A).

除去容器10は,前述したように本実施形態にあっては円筒状のケーシング11内に不要物を回収するための収容空間12を有すると共に,この収容空間12の底部において下向きに開放する開口13を有し,この開口13を被覆する開閉自在な蓋板14が設けられたものであることから,この除去容器10を,掘削機のスクリューロッド28の先端に取り付けて杭頭部31より中空杭30の中空空間32内に挿入して不要物中に沈下させると,除去容器10の開口13を閉じていた蓋板14が中空空間32内の不要物の導入圧力により開き,これによって不要物が除去容器10の収容空間12内に流入する〔図9(B)〕。   In the present embodiment, the removal container 10 has a storage space 12 for collecting unnecessary materials in the cylindrical casing 11 as described above, and an opening 13 that opens downward at the bottom of the storage space 12. The removal container 10 is attached to the tip of the screw rod 28 of the excavator and is attached to the tip of the pile head 31 by a hollow pile. When the hollow plate 32 is inserted into the hollow space 32 and submerged in the unnecessary material, the cover plate 14 that has closed the opening 13 of the removal container 10 is opened by the introduction pressure of the unnecessary material in the hollow space 32, thereby removing the unnecessary material. It flows into the storage space 12 of the removal container 10 [FIG. 9 (B)].

除去容器10内の収容空間12内に対する不要物の流入が完了すると,この不要物を押し上げていた流入圧力が消失し,従ってこの圧力によって押し上げられていた蓋板14が自重によって閉動作を行って開口13を閉じる。   When the inflow of the unwanted material into the storage space 12 in the removal container 10 is completed, the inflow pressure that pushed up the unwanted material disappears, and the lid plate 14 that has been pushed up by this pressure is closed by its own weight. The opening 13 is closed.

そして,中空杭30の中空空間32内より除去容器10を抜き取ると,除去容器10の収容空間12内に導入された不要物の重量により蓋板14は完全に開口13を閉じ,収容空間12内に閉じ込められた不要物は除去容器10と共に中空杭30の中空空間32より抜き取られ,中空杭30の中空空間32内の不要物の液面は,除去された不要物分,低下する〔図9(C)〕。   When the removal container 10 is extracted from the hollow space 32 of the hollow pile 30, the cover plate 14 completely closes the opening 13 due to the weight of the unnecessary material introduced into the accommodation space 12 of the removal container 10, and the inside of the accommodation space 12. Unnecessary matter confined in the hollow pile 30 is extracted from the hollow space 32 of the hollow pile 30 together with the removal container 10, and the liquid level of the unwanted matter in the hollow space 32 of the hollow pile 30 decreases by the amount of the removed unnecessary matter [FIG. (C)].

このようにして,不要物の除去が行われた後の中空空間32では,それまで不要物中に埋没していた部分の内壁に不要物が付着していると共に,除去容器10の長さに対して除去深さが大きい場合には,必要量の不要物の除去が完了していない状態にある〔同じく図9(C)参照〕。   In this way, in the hollow space 32 after the removal of the unnecessary material, the unnecessary material is attached to the inner wall of the portion that has been buried in the unnecessary material, and the length of the removal container 10 is reached. On the other hand, when the removal depth is large, the removal of a necessary amount of unnecessary materials is not completed [see also FIG. 9C].

そこで,除去容器10の収容空間12内に回収された不要物を,図示せざる残土ビット等に排出して空の状態とした後,この除去容器10を再度,中空杭30の中空空間32内に挿入して更に不要物の除去を継続する。   Therefore, after the unnecessary matter collected in the storage space 12 of the removal container 10 is discharged into a residual soil bit (not shown) to make it empty, the removal container 10 is again placed in the hollow space 32 of the hollow pile 30. To remove unnecessary materials.

このとき,スクリューロッド28を介して除去容器10に洗浄水を供給して,除去容器10のケーシング11に設けられた噴射孔20(20’)より洗浄水を噴射することにより,中空杭30の中空空間32内壁に付着した不要物等の汚れを洗浄して除去する〔図9(D)〕。   At this time, the cleaning water is supplied to the removal container 10 through the screw rod 28, and the cleaning water is sprayed from the injection holes 20 (20 ') provided in the casing 11 of the removal container 10, thereby Dirt such as unnecessary matter adhering to the inner wall of the hollow space 32 is washed and removed [FIG. 9D].

このようにして,洗浄水の噴射を行うことにより,洗浄水によって洗い落とされた不要物は,洗浄水と共に内壁を伝って流れ落ち,中空空間32内に溜まることとなるが,除去容器10を不要物中に沈下させる際に,中空空間32内に溜まった洗浄水は,不要物と共に除去容器10内に導入されて,除去容器10を中空空間32内より抜き取ることにより,中空空間32内より除去される。   In this way, by spraying the cleaning water, the unnecessary material washed away by the cleaning water flows down along the inner wall together with the cleaning water and accumulates in the hollow space 32, but the removal container 10 is unnecessary. When sinking into the object, the washing water accumulated in the hollow space 32 is introduced into the removal container 10 together with unnecessary substances, and is removed from the hollow space 32 by extracting the removal container 10 from the hollow space 32. Is done.

除去容器10を抜き取った後の中空空間32内は,このようにして除去された不要物の量に対応して更に液面を降下するが,このとき,回収しきれなかった洗浄水の一部が中空空間32内に残る場合がある〔図9(E)〕。   In the hollow space 32 after the removal container 10 has been extracted, the liquid level further drops in accordance with the amount of unnecessary materials removed in this way, but at this time, part of the washing water that could not be recovered May remain in the hollow space 32 (FIG. 9E).

しかし,再度図9(D)以降の作業を繰り返し,所定の除去深さ(一例として最大22m程度)に至るまで,洗浄と共に不要物の除去を繰り返すことにより,中空空間32内に溜まった洗浄水は,不要物と共に中空空間32内より除去される。   However, the operation after FIG. 9 (D) is repeated again, and the cleaning water accumulated in the hollow space 32 is removed by repeating the removal of unnecessary substances together with the cleaning up to a predetermined removal depth (for example, about 22 m at maximum). Is removed from the hollow space 32 together with unnecessary matter.

このようにして,所定の除去深さ迄不要物を除去することで,中空空間32内より必要量の不要物が除去されると共に,不要物が除去された部分における中空空間32の内壁の洗浄が完了する。   In this way, by removing unnecessary materials up to a predetermined removal depth, a necessary amount of unnecessary materials is removed from the inside of the hollow space 32, and cleaning of the inner wall of the hollow space 32 in the portion where the unnecessary materials are removed. Is completed.

なお,所定の除去深さに至る迄不要物を除去した後においても,未だ中空空間32内に洗浄水が残っている場合には,洗浄水の噴射を停止した状態で除去容器10を洗浄水中に沈下させた後,これを中空空間32内より抜き取ることで,不要物と同様にして残った洗浄水を除去することもできる。   In addition, even after removing unnecessary substances up to a predetermined removal depth, if the washing water still remains in the hollow space 32, the removal container 10 is placed in the washing water with the washing water jetting stopped. After being submerged, the remaining washing water can be removed in the same manner as unnecessary materials by removing it from the hollow space 32.

このように,本発明の除去容器10を使用して不要物の除去を行うことで,洗浄の際に中空空間32内で噴射した洗浄水を,別途ポンプ等を用意して汲み出す作業が不要となる。   In this way, by using the removal container 10 of the present invention to remove unnecessary materials, it is not necessary to prepare a separate pump or the like to pump out the cleaning water sprayed in the hollow space 32 during cleaning. It becomes.

なお,前述した不要物の除去と中空空間32内壁の洗浄は,必ずしも同時に行う必要はなく,例えば,不要物の除去深さが比較的浅い場合等においては,先ず,不要物の除去を所定の除去深さ迄行った後,同一の除去容器10を使用して洗浄を行い,その後,必要に応じて中空空間32内に溜まった洗浄水等を,この除去容器10を使用して除去するものとしても良い。   The removal of the unnecessary material and the cleaning of the inner wall of the hollow space 32 are not necessarily performed at the same time. For example, when the removal depth of the unnecessary material is relatively shallow, the removal of the unnecessary material is first performed in a predetermined manner. After carrying out to the removal depth, it wash | cleans using the same removal container 10, Then, the washing water etc. which accumulated in the hollow space 32 are removed using this removal container 10 as needed. It is also good.

このようにして,不要物の除去と,中空空間32内壁の洗浄を同時に行うことで,中空空間32の内壁に付着した付着物が固まる前にこれを容易に洗浄することができる。   In this way, by removing unnecessary materials and cleaning the inner wall of the hollow space 32 at the same time, the adhering material adhering to the inner wall of the hollow space 32 can be easily cleaned before it hardens.

このようにして不要物の除去,及び内壁の洗浄が完了した中空空間32に対しては,充填・硬化材の充填が行われる。   The hollow space 32 in which the removal of unnecessary materials and the cleaning of the inner wall are completed in this way is filled with a filling / curing material.

前述したように,中空杭30の内壁を洗浄して内壁に付着する付着物を除去したことにより,充填・硬化材の中空杭30内周壁に対する付着性が向上し,中空杭の強化を好適に行うことが可能である。   As described above, by cleaning the inner wall of the hollow pile 30 and removing the deposits adhering to the inner wall, the adhesion of the filling / hardening material to the inner peripheral wall of the hollow pile 30 is improved, and the hollow pile is suitably strengthened. Is possible.

なお,この充填・硬化材の充填に際しては,不要物の除去,洗浄が完了した中空空間内に,補強筋等を配置した後,充填・硬化材を充填する等して,より一層の中空杭の強化を図るものとしても良い。   When filling with this filling / hardening material, after placing reinforcing bars in the hollow space where removal of unnecessary materials and cleaning has been completed, filling with the filling / hardening material, etc. It is good also as what aims at strengthening.

以上説明したように,本発明の除去容器10によれば,中空杭30の中空空間32内に存在するスライムやセメントミルク等の不要物の除去と,中空空間32内壁の洗浄とを共通の装置により,同時に行うことができることから,各工程毎にそれぞれ異なる装置を使用する場合のように,スクリューロッド28に対する機器の付け替えが不要であると共に,不要物の除去,洗浄に必要な労力やエネルギーを大幅に低減することが可能である。   As described above, according to the removal container 10 of the present invention, the removal of unnecessary substances such as slime and cement milk existing in the hollow space 32 of the hollow pile 30 and the cleaning of the inner wall of the hollow space 32 are common devices. Therefore, it is not necessary to replace the equipment with respect to the screw rod 28 as in the case of using a different device for each process, and the labor and energy required for removing unnecessary substances and cleaning are reduced. It can be greatly reduced.

また,洗浄工程を独自に行う場合,除去工程からの経過時間によっては付着物が固まって除去し難くなったり,また,洗浄の際に噴射された洗浄水や,洗浄水によって洗い流された不要物が中空空間内に溜まって新たな不要物を発生させることとなるが,不要物の除去と洗浄とを同時に行うことで,内壁に対する付着物は固まる前に洗浄水の噴射によって容易に除去することができると共に,中空空間32内で噴射されて中空空間32内に溜まった洗浄水等の新たな不要物は,除去容器10による不要物の回収の際に一緒に除去・回収されることとなるために,別途ポンプ等を使用した汲み上げが不要となる。   In addition, when performing the cleaning process independently, depending on the elapsed time from the removal process, the deposits may harden and become difficult to remove, or the cleaning water sprayed at the time of cleaning, or the unnecessary material washed away by the cleaning water Will accumulate in the hollow space and generate new unnecessary materials. By removing unnecessary materials and cleaning at the same time, the deposits on the inner wall can be easily removed by spraying the cleaning water before solidifying. In addition, new unnecessary substances such as washing water that is jetted in the hollow space 32 and accumulated in the hollow space 32 are removed and collected together when the unnecessary containers are collected by the removal container 10. This eliminates the need for a separate pump.

しかも,本発明の除去容器10に設けられた噴射孔20(20’)は,直径1〜3mmと比較的小径であり,この噴射孔20(20’)を介して高圧水を噴射することにより,洗浄効果を犠牲にすることなく,使用する洗浄水の量を減少させることができ,洗浄に要するコスト減を図ることができると共に,環境に対する負荷をも低減することが可能である。   Moreover, the injection hole 20 (20 ′) provided in the removal container 10 of the present invention has a relatively small diameter of 1 to 3 mm. By injecting high-pressure water through the injection hole 20 (20 ′), The amount of cleaning water to be used can be reduced without sacrificing the cleaning effect, so that the cost required for cleaning can be reduced and the burden on the environment can also be reduced.

10 除去容器
11 ケーシング
12 収容空間
13 開口
14 蓋板
15 ヒンジ
18 支持材
18a 第1の支持材
18b 第2の支持材
18c 第3の支持材
19 接合具
19a 導入路
20 噴射孔
20’ 貫通孔(噴射孔)
21 ボルト状部材
22 ネジ孔
23,25 アングル材
24 給水路
26 分配給水路
27 ドレン孔
28 スクリューロッド
30 中空杭
31 杭頭部
32 中空空間
S ストッパ
100 除去容器
111 除去容器本体
112 収容空間
113 開口
114 蓋板
115 ヒンジ
120 洗浄装置
122 天板
123 底板
125 支持板
126 払拭体
127 噴射室
128 導入路
DESCRIPTION OF SYMBOLS 10 Removal container 11 Casing 12 Accommodating space 13 Opening 14 Cover plate 15 Hinge 18 Support material 18a 1st support material 18b 2nd support material 18c 3rd support material 19 Joiner 19a Introduction path 20 Injection hole 20 'Through-hole ( Injection hole)
DESCRIPTION OF SYMBOLS 21 Bolt-shaped member 22 Screw hole 23,25 Angle material 24 Water supply path 26 Distribution water supply path 27 Drain hole 28 Screw rod 30 Hollow pile 31 Pile head 32 Hollow space S Stopper 100 Removal container 111 Removal container main body 112 Accommodation space 113 Opening 114 Cover plate 115 Hinge 120 Cleaning device 122 Top plate 123 Bottom plate 125 Support plate 126 Wiping body 127 Injection chamber 128 Introduction path

Claims (5)

中空杭の中空空間内に存在する液状乃至はゲル状の不要物を,前記中空空間内より除去するための除去容器において,
前記除去容器が,
内部に不要物の収容空間を備え,かつ,底部に前記収容空間内に前記不要物を導入するための開口を備えたケーシングと,
前記ケーシングの底部に設けた前記開口を,前記除去容器を前記不要物中に沈下させた際の前記不要物の流入圧力によって開放可能と成すように,前記ケーシングの内部側より開閉自在に被覆する蓋板を備え,
前記蓋板による前記開口の被覆時,前記ケーシングが液状乃至はゲル状の前記不要物を汲み上げ可能な液密性を有し,
前記ケーシングが更に,
掘削機のスクリューロッドの下端に連結可能な接合具をその上端部分に備えると共に,洗浄水を前記中空杭の中空空間内壁に向けて噴射する噴射孔と,前記噴射孔を前記スクリューロッド内に設けられた洗浄水の流路に連通する給水路を備えることを特徴とする中空杭内不要物の除去容器。
In a removal container for removing liquid or gel-like unwanted matter present in the hollow space of the hollow pile from the hollow space,
The removal container is
A casing having an accommodation space for unnecessary objects therein and an opening for introducing the unnecessary objects into the accommodation space at the bottom;
The opening provided in the bottom of the casing, so as to make openable by the inflow pressure of the unwanted matter when allowed to settle pre Symbol removing vessel in the unwanted matter, openably covering from the inner side of the casing A cover plate
When the opening is covered with the lid plate, the casing has a liquid-tight property that can pump up the liquid or gel-like unnecessary matter,
The casing further comprises:
A connector that can be connected to the lower end of the screw rod of the excavator is provided at the upper end portion thereof, and an injection hole for injecting cleaning water toward the hollow space inner wall of the hollow pile, and the injection hole are provided in the screw rod. A container for removing unnecessary matter in the hollow pile, comprising a water supply channel communicating with the flow path of the washed water.
前記噴射孔の直径が1〜3mmである請求項1記載の中空杭内不要物の除去容器。   The removal container for unwanted matter in the hollow pile according to claim 1, wherein the diameter of the injection hole is 1 to 3 mm. 前記噴射孔が前記ケーシングの肉厚を貫通して形成されていることを特徴とする請求項1又は2記載の中空杭内不要物の除去容器。   3. The container for removing unwanted matter in a hollow pile according to claim 1 or 2, wherein the injection hole is formed so as to penetrate the thickness of the casing. 前記ケーシングが,該ケーシングの外周面に形成されたネジ孔と,該ネジ孔に螺合するボルト状部材を備え,前記ボルト状部材に,該ボルト状部材を軸線方向に貫通する貫通孔を設け,該貫通孔を前記噴射孔としたことを特徴とする請求項1〜3いずれか1項記載の中空杭内不要物の除去容器。   The casing includes a screw hole formed on the outer peripheral surface of the casing and a bolt-shaped member that is screwed into the screw hole, and the bolt-shaped member is provided with a through-hole that penetrates the bolt-shaped member in the axial direction. 4. The removal container for unnecessary matter in the hollow pile according to any one of claims 1 to 3, wherein the through hole is the injection hole. 記蓋板の一端を揺動可能に前記ケーシングにヒンジを介して係止することを特徴とする請求項1記載の中空杭内不要物の除去容器。 Removing the container before Symbol claim 1 hollow piles in unnecessary substances, wherein one end of the cover plate via a hinge swingably said casing, characterized in that locking.
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JP3912740B2 (en) * 2002-05-17 2007-05-09 株式会社不動テトラ High pressure spray nozzle tube and solidification pile construction device with the same
JP4778805B2 (en) * 2006-02-14 2011-09-21 株式会社播磨商事 Construction method of foundation pile
JP4778921B2 (en) * 2007-03-13 2011-09-21 株式会社播磨商事 Foundation pile construction equipment

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