JP2014109097A5 - - Google Patents
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- JP2014109097A5 JP2014109097A5 JP2012262483A JP2012262483A JP2014109097A5 JP 2014109097 A5 JP2014109097 A5 JP 2014109097A5 JP 2012262483 A JP2012262483 A JP 2012262483A JP 2012262483 A JP2012262483 A JP 2012262483A JP 2014109097 A5 JP2014109097 A5 JP 2014109097A5
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- JP
- Japan
- Prior art keywords
- earth
- sand
- stirring blade
- stirring
- blade
- 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.)
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- 238000003756 stirring Methods 0.000 description 10
- 239000004576 sand Substances 0.000 description 6
- 239000012530 fluid Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 1
Description
図4は杭本体11の上下動時における攪拌混合作用を示している。杭本体11の上昇時に螺旋状翼13の上側の土砂が螺旋状翼13の始端と終端との間を通過するが、この際、土砂は同図に示すように多くは湾曲した流れになり、この結果、土砂と硬化性流体は攪拌混合されやすくなっている。 FIG. 4 shows the stirring and mixing action when the pile body 11 moves up and down. When the pile body 11 is raised, the earth and sand on the upper side of the spiral wing 13 passes between the start and end of the spiral wing 13, and at this time, the earth and sand are mostly curved as shown in the figure. As a result, earth and sand and the curable fluid are easily mixed with stirring.
攪拌翼18の回転軌跡に対する交差角度は、直角(90度)以外であればどの角度でもよいが、例えば45度から60度程度が好ましい。これは、攪拌翼18を回転軌跡に対して直角に配置させると(直交させると)、図10(a)、(b)に示すように、攪拌翼18の面部18aに突き当たった土砂が次第に圧縮されて硬い土塊となり、その結果、硬化性流体と混合せず、土塊が根固め体B(図6参照)の中に残ってしまい、良質な根固めを形成できないからである。この現象は発明者等の複数の現場実物実験で確認されている。このような現象を避けるため、上述したように攪拌翼18の回転軌跡に対し傾斜して交差させるのである。傾斜角度として45度から60度程度であれば、面部18aに土砂が当たっても滞留せずに土砂をスムーズに逃がすことが出来る。 The crossing angle with respect to the rotation trajectory of the stirring blade 18 may be any angle other than a right angle (90 degrees), but is preferably about 45 degrees to 60 degrees, for example. This is because when the stirring blade 18 is arranged at a right angle to the rotation locus (orthogonal), as shown in FIGS. 10 (a) and 10 (b), the earth and sand hitting the surface portion 18a of the stirring blade 18 are gradually compressed. This is because a hard soil mass is formed, and as a result, the soil mass does not mix with the curable fluid, and the soil mass remains in the root-solidified body B (see FIG. 6), so that a high-quality root mass cannot be formed. This phenomenon has been confirmed by a plurality of field experiments by the inventors. In order to avoid such a phenomenon, as described above, the rotation trajectory of the stirring blade 18 is inclined and intersected. If the inclination angle is about 45 to 60 degrees, the earth and sand can be smoothly escaped without staying even if the earth hits the surface portion 18a.
なお、本第6実施例は、上記第1実施例乃至第5実施例及び後述する第7実施例にもそれぞれ適用することが出来る。噴出口14aを螺旋状翼13の終端部13b付近の下側に設けることにより、上記第1実施例乃至第5実施例及び後述する第7実施例において、螺旋状翼13、攪拌翼18、掘削兼攪拌翼19、逆転拡大翼30、攪拌補助翼21等の作用と相俟って硬化性流体と土砂との攪拌混合がさらに容易となる。 The sixth embodiment can be applied to the first to fifth embodiments and the seventh embodiment described later. By providing the spout 14a below the end portion 13b of the spiral blade 13, the spiral blade 13, the stirring blade 18, and the excavation in the first to fifth embodiments and the seventh embodiment described later. Combined with the action of the cum stirring blade 19, the reverse expansion blade 30, the auxiliary stirring blade 21, etc., the stirring and mixing of the curable fluid and earth and sand becomes easier.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012262483A JP5936996B2 (en) | 2012-11-30 | 2012-11-30 | Rooting construction method of rotary intrusion pile |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012262483A JP5936996B2 (en) | 2012-11-30 | 2012-11-30 | Rooting construction method of rotary intrusion pile |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2014109097A JP2014109097A (en) | 2014-06-12 |
JP2014109097A5 true JP2014109097A5 (en) | 2015-04-30 |
JP5936996B2 JP5936996B2 (en) | 2016-06-22 |
Family
ID=51029903
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2012262483A Active JP5936996B2 (en) | 2012-11-30 | 2012-11-30 | Rooting construction method of rotary intrusion pile |
Country Status (1)
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JP (1) | JP5936996B2 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6529226B2 (en) * | 2014-07-28 | 2019-06-12 | 大成建設株式会社 | Pile driving method and the pile |
JP6425267B2 (en) * | 2014-10-06 | 2018-11-21 | 千代田工営株式会社 | Construction method of rooted foundation using a rotating penetration pile and a rotating penetration pile |
JP6413126B2 (en) * | 2014-10-30 | 2018-10-31 | 光弘 南馬越 | Reinforced concrete filled square steel pipe pile pillar |
CN105804112A (en) * | 2016-03-28 | 2016-07-27 | 王燏斌 | Spiral cylindrical foundation |
JP7119892B2 (en) * | 2018-10-23 | 2022-08-17 | 日本製鉄株式会社 | Construction methods of structures and structures |
CN111395327B (en) * | 2020-03-25 | 2022-04-05 | 丁红岩 | Rotary single pile foundation and construction method thereof |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3737271B2 (en) * | 1998-02-19 | 2006-01-18 | 積水ハウス株式会社 | Pile placement method |
JPH11350473A (en) * | 1998-06-10 | 1999-12-21 | Toshio Enoki | Execution method for steel pipe pile |
JP3844043B2 (en) * | 2000-01-06 | 2006-11-08 | 住友金属工業株式会社 | Winged pile |
JP2002235325A (en) * | 2001-02-07 | 2002-08-23 | Norio Moriya | Foundation pile |
JP4641369B2 (en) * | 2001-09-12 | 2011-03-02 | 旭化成建材株式会社 | Partially built soil cement composite pile |
JP4029966B2 (en) * | 2002-06-06 | 2008-01-09 | ジャパンパイル株式会社 | Pile embedding method and excavation equipment used therefor |
JP3524085B1 (en) * | 2003-04-23 | 2004-04-26 | 徳彦 新田 | Foundation steel pipe pile and its stable support method |
JP2008184862A (en) * | 2007-01-31 | 2008-08-14 | Ida Technos Corp | Construction method of rotary jacking pile and rotary jacking pile used for this method |
JP4187225B2 (en) * | 2007-03-26 | 2008-11-26 | 六郎 海野 | Tip closing pile and excavation head for tip closing pile construction |
JP5022871B2 (en) * | 2007-11-20 | 2012-09-12 | 前田製管株式会社 | Off-the-shelf pile head |
JP4483998B1 (en) * | 2009-11-02 | 2010-06-16 | 有限会社ピーステージ | Steel pipe pile for synthetic pile construction and synthetic pile construction method |
JP2011196023A (en) * | 2010-03-17 | 2011-10-06 | Asahi Kasei Construction Materials Co Ltd | Pile construction method, pile construction device, and pile for ground construction |
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2012
- 2012-11-30 JP JP2012262483A patent/JP5936996B2/en active Active
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