JP2007277975A - Jig for pitching core material for soil-cement column wall and pitching method using the same - Google Patents

Jig for pitching core material for soil-cement column wall and pitching method using the same Download PDF

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Publication number
JP2007277975A
JP2007277975A JP2006107236A JP2006107236A JP2007277975A JP 2007277975 A JP2007277975 A JP 2007277975A JP 2006107236 A JP2006107236 A JP 2006107236A JP 2006107236 A JP2006107236 A JP 2006107236A JP 2007277975 A JP2007277975 A JP 2007277975A
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core material
jig
soil cement
column wall
cement column
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JP2006107236A
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Japanese (ja)
Inventor
Akira Shigemoto
彰 重本
Daisuke Tsuji
大介 辻
Osamu Kaneko
治 金子
Hiromi Tanaka
弘美 田中
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Toda Corp
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Toda Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a jig and a method for pitching core materials for soil-cement column walls and capable of easily securing accuracy in pitching. <P>SOLUTION: In the jig 1 for pitching core materials for soil-cement column walls, upper and lower part connecting plates 5 and 6 are provided in such a way as to cover a web 3 and flanges 4 of upper and lower surfaces of H-section steel 2. Bolt insertion openings 7 are formed at both sides of the upper and lower part connecting plates 5 and 6 centering on the flanges 4. Notches 8 are formed at one-end sides of the upper and lower part connecting plates 5 and 6 centering on the flanges 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本願発明はソイルセメント柱列壁用の芯材の建込み治具およびこの建込み治具を使用したソイルセメント柱列壁用の芯材の建込み方法に関するものである。   The present invention relates to a method for constructing a core material for a soil cement column wall and a method for constructing a core material for a soil cement column wall using this construction tool.

ソイルセメント柱列壁に挿入される芯材は、応力を伝達するための重要な構造部材であるが、掘削孔におけるソイルセメント中に挿入したときの建て込み精度が確保できるのは、図７の（１）に示すように、芯材１６がソイルセメント１７より上、すなわち掘削孔１８より上にある場合だけである。したがって、同図の（２）に示すように、芯材１６の天端を掘削孔１８より下側に位置させる場合は、ソイルセメント１７中に自由落下させるか、芯材１６に他の鋼材１９を接合しなければならなかった。またその他のソイルセメント柱列壁用の芯材の建込み方法としては、例えば特開平９−７８５７３号の発明が知られている。
特開平９−７８５７３号公報 Although the core material inserted into the soil cement column wall is an important structural member for transmitting stress, the accuracy of erection when it is inserted into the soil cement in the excavation hole can be secured as shown in FIG. As shown in (1), only when the core 16 is above the soil cement 17, that is, above the excavation hole 18. Therefore, as shown in (2) of the figure, when the top end of the core material 16 is positioned below the excavation hole 18, it is allowed to fall freely into the soil cement 17 or another steel material 19 is placed on the core material 16. Had to be joined. As another method for laying a core material for a soil cement column wall, for example, the invention of Japanese Patent Laid-Open No. 9-78573 is known.
Japanese Patent Laid-Open No. 9-78573

しかし、上記のソイルセメント柱列壁用の芯材の建込み方法は、自由落下の場合は、図７の（３）に示すように、芯材１６の位置が確認できないため建て込み精度が確保できず、また他の鋼材１９を接合する場合は、同図の（４）に示すように、鋼材１９が残るので掘削工事において障害になるという問題があった。   However, the construction method of the core material for the soil cement column wall described above ensures the erection accuracy because the position of the core material 16 cannot be confirmed as shown in FIG. When other steel materials 19 cannot be joined, as shown in FIG. 4 (4), the steel materials 19 remain, which causes a problem in excavation work.

本願発明はこれらの問題に鑑みてなされたものであり、その目的は、建込み精度が簡単に確保できるソイルセメント柱列壁用の芯材の建込み治具および建込み方法を提供することである。   The present invention has been made in view of these problems, and an object of the present invention is to provide a building jig and a building method for a core material for a soil cement column wall that can easily secure building accuracy. is there.

以上の課題を解決するためのソイルセメント柱列壁用の芯材の建込み治具は、Ｈ形鋼の上下面のフランジとウエブとを覆うようにして上下部接続プレートがそれぞれ設けられ、フランジを中心にした上下部接続プレートの両側にはボルト挿入口が設けられ、フランジを中心にした上下部接続プレートの一方側には切欠部が形成されたことを特徴とする。
またソイルセメント柱列壁用の芯材の建込み方法は、掘削孔よりも短いソイルセメント柱列壁用の芯材を請求項１の建込み治具を使って建て込むものであり、芯材の上面に設けた接合プレートに建込み治具を、上下部接続プレートのボルト挿入口に挿入した接合ボルトで接合し、建込み治具が接合された芯材を掘削孔のソイルセメント中に挿入したときに、該掘削孔から突出した建込み治具で芯材の建て込み精度を確保した後に、建込み治具を芯材から取り外すことを特徴とする。また建込み治具は、建込み治具が接合された芯材を掘削孔に挿入したときに、掘削孔から突出する長さであることを含むものである。 In order to solve the above-mentioned problems, the construction jig for the core material for the soil cement column wall is provided with upper and lower connecting plates so as to cover the flanges and webs of the upper and lower surfaces of the H-shaped steel, Bolt insertion holes are provided on both sides of the upper and lower connecting plates centered on the upper and lower sides, and a notch is formed on one side of the upper and lower connecting plates centered on the flange.
In addition, the method of building the core material for the soil cement column wall is to build the core material for the soil cement column wall which is shorter than the excavation hole using the building jig of claim 1. The construction jig is joined to the joint plate provided on the upper surface of the steel plate with the joint bolt inserted into the bolt insertion port of the upper and lower connection plates, and the core material to which the construction jig is joined is inserted into the soil cement in the drilling hole. In this case, the construction jig is removed from the core material after ensuring the accuracy of construction of the core material with the construction jig protruding from the excavation hole. The erection jig includes a length protruding from the digging hole when the core material to which the erection jig is joined is inserted into the digging hole.

地盤を掘削して芯材を露見しなければ建て込み精度の確認ができなかったのに比べて、掘削孔の上で芯材の建て込み精度を確認することができるので、精度高い建て込みが簡単にできる。   Compared to the fact that the accuracy of erection could not be confirmed without drilling the ground and exposing the core material, the accuracy of erection of the core material can be confirmed on the excavation hole. Easy to do.

以下、本願発明のソイルセメント柱列壁用の芯材の建込み治具（以下建込み治具という）、およびソイルセメント柱列壁用の芯材の建込み方法（以下建込み方法という）について説明する。はじめに建込み治具について説明し、次に、この建込み治具を使用した建込み方法について説明するが、各実施の形態において同じ構成は同じ符号を付して説明し、異なった構成にのみ異なった符号を付して説明する。   Hereinafter, a construction material for a core material for a soil cement column wall (hereinafter referred to as a construction tool) and a construction method for a core material for a soil cement column wall (hereinafter referred to as a construction method) according to the present invention. explain. First, the construction jig will be explained, and then the construction method using this construction jig will be explained. In each embodiment, the same components are described with the same reference numerals, and only different configurations are described. A description will be given with different reference numerals.

図１は建込み治具１の斜視図および断面図を示したものであり、適宜長さのＨ形鋼２の上下両面にウエブ３とフランジ４を覆うようにして上下部接続プレート５、６が溶接接合されて構成されている。   FIG. 1 shows a perspective view and a cross-sectional view of the erection jig 1. Upper and lower connection plates 5, 6 are provided so as to cover the web 3 and the flange 4 on both upper and lower surfaces of an H-shaped steel 2 having an appropriate length. Is constructed by welding.

この上下部接続プレート５、６のフランジ４を中心にした両側に接合ボルトを挿入するボルト挿入口７が設けられ、フランジ４を中心にした一方側（片側）には切欠部８が形成されている。この切欠部８は隣接孔（図示せず）を掘削する際の掘削機の邪魔にならないようにするものであり、湾曲状に形成されている。   Bolt insertion ports 7 for inserting joining bolts are provided on both sides of the upper and lower connection plates 5 and 6 with the flange 4 as the center, and a notch 8 is formed on one side (one side) with the flange 4 as the center. Yes. The notch 8 is formed in a curved shape so as not to obstruct the excavator when excavating an adjacent hole (not shown).

この建込み治具１は、掘削孔９よりも短い芯材１０の建込み精度を確保するものであるため、芯材１０に接合されて掘削孔９に挿入したときに、掘削孔９の上面から突出する長さを有する必要がある。   Since this erection jig 1 is for securing the erection accuracy of the core material 10 shorter than the digging hole 9, the upper surface of the digging hole 9 when joined to the core material 10 and inserted into the digging hole 9. It is necessary to have a length that protrudes from.

一方、この建込み治具１が接合される芯材１０であるＨ形鋼には、図２の（１）および（２）に示すように、上面に接合プレート１１が設置されている必要があり、この下面には建込み治具１からの接合ボルトをねじ込むナット１２が設置されている。また、この接合プレート１１のフランジを中心にした一方側（片側）にも、上記と同じ切欠部８が形成されている。   On the other hand, as shown in (1) and (2) of FIG. 2, the H-shaped steel, which is the core material 10 to which the erection jig 1 is bonded, needs to have a bonding plate 11 installed on the upper surface. There is a nut 12 into which the joining bolt from the erection jig 1 is screwed. Further, the same notch 8 is formed on one side (one side) centered on the flange of the joining plate 11.

したがって、図２の（３）に示すように、建込み治具１の下部接続プレート６を芯材１０の接合プレート１１に重ね合わせ、接合ボルト１３を接合プレート１１のナット１２にねじ込むことにより、建込み治具１が芯材１０に接合され、これとは反対に接合ボルト１３をナット１２から取り外すと建込み治具１が芯材１０から取り外せる。   Therefore, as shown in (3) of FIG. 2, the lower connection plate 6 of the erection jig 1 is overlapped on the joining plate 11 of the core material 10, and the joining bolt 13 is screwed into the nut 12 of the joining plate 11, The erection jig 1 is joined to the core member 10, and on the contrary, the erection jig 1 can be removed from the core member 10 by removing the joining bolt 13 from the nut 12.

次に、この建込み治具を使用した建込み方法について説明する。はじめに、図３に示すように、Ｈ形鋼の上面に接合プレート１１が取り付けられた芯材１０、すなわち掘削孔９よりも短くて、掘削孔９に挿入されたときに天端が施工レベルから目視できない芯材１０に建込み治具１を接合する。   Next, an erection method using this erection jig will be described. First, as shown in FIG. 3, the core member 10 having the joining plate 11 attached to the upper surface of the H-shaped steel, that is, shorter than the excavation hole 9, the top end from the construction level is inserted into the excavation hole 9. The erection jig 1 is joined to the core material 10 that cannot be seen.

この接合は、上記のように建込み治具１の上下部接続プレート５、６のボルト挿入口７に挿入した接合ボルト１３を芯材１０の接合プレート１１のナット１２にねじ込んで行うものである。   This joining is performed by screwing the joining bolt 13 inserted into the bolt insertion port 7 of the upper and lower connecting plates 5 and 6 of the erection jig 1 into the nut 12 of the joining plate 11 of the core material 10 as described above. .

次に、図４に示すように、この建込み治具１が接合された芯材１０を掘削孔９のソイルセメント１４内に挿入すると、建込み治具１の上部が掘削孔９からわずかに突出するので、これによって芯材１０の建て込み精度を確保する。   Next, as shown in FIG. 4, when the core material 10 to which the erection jig 1 is joined is inserted into the soil cement 14 in the excavation hole 9, the upper part of the erection jig 1 slightly extends from the excavation hole 9. Since it protrudes, the erection accuracy of the core material 10 is ensured by this.

そして、この建て込み精度を確保した後に、図５に示すように、接合ボルト１３を接合プレート１１のナット１２から取り外して建込み治具１を芯材１０から引き離すと、建て込み精度を確保した芯材１０がソイルセメント１４内に設置される。この作業を順次繰り返すことによりソイルセメント柱列壁を構築することができる（図６参照）。   And after securing this erection accuracy, as shown in FIG. 5, the erection accuracy was ensured by removing the joining bolt 13 from the nut 12 of the joining plate 11 and pulling the erection jig 1 away from the core material 10. The core material 10 is installed in the soil cement 14. By repeating this operation sequentially, a soil cement column wall can be constructed (see FIG. 6).

建込み治具を示し、（１）は斜視図、（２）は断面図である。The erection jig is shown, (1) is a perspective view, (2) is a cross-sectional view. 芯材を示し、（１）は斜視図、（２）は断面図である。A core material is shown, (1) is a perspective view, (2) is sectional drawing. 建込み治具を芯材に接合した断面図である。It is sectional drawing which joined the erection jig to the core material. 建込み治具を接合した芯材を掘削孔に挿入する断面図である。It is sectional drawing which inserts the core material which joined the erection jig into an excavation hole. 建込み治具を接合した芯材を掘削孔に建て込んだ断面図である。It is sectional drawing which built the core material which joined the erection jig in the excavation hole. 建込み治具を芯材から取り外した断面図である。It is sectional drawing which removed the erection jig from the core material. （１）はソイルセメント柱列壁の斜視図、（２）は地盤を掘削したソイルセメント柱列壁の断面図、（３）および（４）は芯材を掘削孔に建て込んだ断面図である。(1) is a perspective view of a soil cement column wall, (2) is a cross-sectional view of a soil cement column wall obtained by excavating the ground, and (3) and (4) are cross-sectional views in which a core material is built in a drilling hole. is there.

符号の説明Explanation of symbols

１ 建込み治具
２ Ｈ形鋼
３ ウエブ
４ フランジ
５ 上部接続プレート
６ 下部接続プレート
７ ボルト挿入口
８ 切欠部
９、１８ 掘削孔
１０、１６ 芯材
１１ 接合プレート
１２ ナット
１３ 接合ボルト
１４、１７ ソイルセメント
１９ 鋼材 DESCRIPTION OF SYMBOLS 1 Construction jig 2 H-section steel 3 Web 4 Flange 5 Upper connection plate 6 Lower connection plate 7 Bolt insertion slot 8 Notch 9, 18 Drilling hole 10, 16 Core material 11 Joint plate 12 Nut 13 Joint bolt 14, 17 Soil Cement 19 Steel

Claims (3)

Ｈ形鋼の上下面のフランジとウエブとを覆うようにして上下部接続プレートがそれぞれ設けられ、フランジを中心にした上下部接続プレートの両側にはボルト挿入口が設けられ、フランジを中心にした上下部接続プレートの一方側には切欠部が形成されたことを特徴とするソイルセメント柱列壁用の芯材の建込み治具。   Upper and lower connection plates are provided so as to cover the upper and lower flanges and webs of the H-shaped steel, and bolt insertion holes are provided on both sides of the upper and lower connection plates centering on the flange, with the flange at the center. A jig for building a core material for a soil cement column wall, wherein a notch is formed on one side of the upper and lower connecting plates. 掘削孔よりも短いソイルセメント柱列壁用の芯材を請求項１の建込み治具を使って建て込むものであり、芯材の上面に設けた接合プレートに建込み治具を、上下部接続プレートのボルト挿入口に挿入した接合ボルトで接合し、建込み治具が接合された芯材を掘削孔のソイルセメント中に挿入したときに、該掘削孔から突出した建込み治具で芯材の建て込み精度を確保した後に、建込み治具を芯材から取り外すことを特徴とするソイルセメント柱列壁用の芯材の建込み方法。   A core material for a soil cement column wall which is shorter than the excavation hole is built using the erection jig according to claim 1, and the erection jig is attached to the joining plate provided on the upper surface of the core material. When the core material joined with the joining bolt inserted into the bolt insertion port of the connection plate and inserted into the soil cement of the drilling hole is inserted into the soil cement of the drilling hole, the core is inserted with the building jig protruding from the drilling hole. A method for constructing a core material for a soil cement column wall, wherein the construction jig is removed from the core material after securing the construction accuracy of the material. 建込み治具は、建込み治具が接合された芯材を掘削孔に挿入したときに、掘削孔から突出する長さであることを特徴とする請求項２に記載のソイルセメント柱列壁用の芯材の建込み方法。   The soil cement column wall according to claim 2, wherein the erection jig has a length protruding from the digging hole when the core material to which the erection jig is bonded is inserted into the digging hole. Method for building core material.
JP2006107236A 2006-04-10 2006-04-10 Jig for pitching core material for soil-cement column wall and pitching method using the same Pending JP2007277975A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019183536A (en) * 2018-04-13 2019-10-24 鹿島建設株式会社 Pile and method for removing upper pile
JP2019194401A (en) * 2018-05-01 2019-11-07 鹿島建設株式会社 Pile, jointing method of piles and removal method of upper pile
JP7212981B1 (en) * 2022-08-24 2023-01-26 合同会社天神サービス Earth retaining structure and construction method of earth retaining structure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54115501A (en) * 1978-02-28 1979-09-08 Hiroshi Enoki Method of burying construction of pile
JPS58204219A (en) * 1982-05-22 1983-11-28 Nippon Concrete Kogyo Kk Settlement of pipe of continuous wall
JP2002138462A (en) * 2000-11-01 2002-05-14 Seiko Kogyo Kk Stress material positioning device and setting method of stress material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54115501A (en) * 1978-02-28 1979-09-08 Hiroshi Enoki Method of burying construction of pile
JPS58204219A (en) * 1982-05-22 1983-11-28 Nippon Concrete Kogyo Kk Settlement of pipe of continuous wall
JP2002138462A (en) * 2000-11-01 2002-05-14 Seiko Kogyo Kk Stress material positioning device and setting method of stress material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019183536A (en) * 2018-04-13 2019-10-24 鹿島建設株式会社 Pile and method for removing upper pile
JP7079645B2 (en) 2018-04-13 2022-06-02 鹿島建設株式会社 How to remove piles and upper piles
JP2019194401A (en) * 2018-05-01 2019-11-07 鹿島建設株式会社 Pile, jointing method of piles and removal method of upper pile
JP6997671B2 (en) 2018-05-01 2022-01-17 鹿島建設株式会社 Pile, how to join piles and how to remove upper piles
JP7212981B1 (en) * 2022-08-24 2023-01-26 合同会社天神サービス Earth retaining structure and construction method of earth retaining structure

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