JP4244320B2 - 基礎杭の施工方法 - Google Patents
基礎杭の施工方法 Download PDFInfo
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- JP4244320B2 JP4244320B2 JP2003422236A JP2003422236A JP4244320B2 JP 4244320 B2 JP4244320 B2 JP 4244320B2 JP 2003422236 A JP2003422236 A JP 2003422236A JP 2003422236 A JP2003422236 A JP 2003422236A JP 4244320 B2 JP4244320 B2 JP 4244320B2
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- 229910000831 Steel Inorganic materials 0.000 claims description 99
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- 230000003014 reinforcing effect Effects 0.000 claims description 51
- 230000002787 reinforcement Effects 0.000 claims description 36
- 238000009412 basement excavation Methods 0.000 claims description 15
- 239000012779 reinforcing material Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 description 13
- 239000008267 milk Substances 0.000 description 9
- 210000004080 milk Anatomy 0.000 description 9
- 235000013336 milk Nutrition 0.000 description 9
- 239000004568 cement Substances 0.000 description 8
- 239000011083 cement mortar Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009415 formwork Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 240000001973 Ficus microcarpa Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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- Piles And Underground Anchors (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Description
杭の底部又は/及び中間部に杭径よりも大きい鉄骨補強型の拡大部を設ける基礎杭の施工方法であって、
既製杭の下端又は/及び中間部に、鉛直方向に作用する圧縮力により拡開される構造を有する筒状の鉄骨補強体を固定し、所定の深度において前記鉄骨補強体を拡開させつつ、該鉄骨補強体を回転させて拡大部の掘削を行い、掘削後には該鉄骨補強体をそのまま拡大部の補強材とすることを特徴とする。
また、鉄骨補強体として、複数の小さい剛性の部位を具備し、鉛直方向に作用する圧縮力により該部位が曲げられることで拡開される構造を有するもの、特に、上下一対の環状部材を掘削刃となる複数の棒状部材で連結した構造を有し、環状部材と棒状部材の連結部分および棒状部材に小さい剛性の部位が形成されているものを用いることにより、鉄骨補強体の製作コストを削減し、極めて簡易な構造によって所望の拡大部の掘削及び補強を行うことができる。
本例は、孔底拡開部内に杭径よりも大きな鉄骨補強型の拡大部(拡底部)を設けた基礎杭構造の施工方法に関するものである。
本例は、杭の中間部に杭径よりも大きな鉄骨補強型の拡大部(節部)を設けた基礎杭構造の施工方法に関するものである。
本例は、上杭(鋼管杭)と下杭(鋼管杭)の連結部に杭径よりも大きな鉄骨補強型の拡大部(節部)を設けた基礎杭構造の施工方法に関するものである。
本発明の施工方法は、先に説明した実施形態例を適宜組み合わせて実施することにより、基礎杭の底部及び中間部に鉄骨補強型の拡大部を設けることもできる。
11a、11b 環状部材
12 棒状部材
13a〜13d 小さい剛性の部位
14 切り込みライン
15 切欠部(開口部)
100、200 既製杭
101 スパイラルオーガ
102 拡底部
202 拡大部
300 上杭
301 ボルト穴
310 接続管
311 移動用溝
311a,311b ボルト穴
311c 連通溝
312 ボルト
320 下杭
Claims (1)
- 杭の底部又は/及び中間部に杭径よりも大きい鉄骨補強型の拡大部を設ける基礎杭の施工方法であって、
既製杭の下端又は/及び中間部に、鉛直方向に作用する圧縮力により拡開される構造を有する筒状の鉄骨補強体を固定し、所定の深度において前記鉄骨補強体を拡開させつつ、該鉄骨補強体を回転させて拡大部の掘削を行い、掘削後には該鉄骨補強体をそのまま拡大部の補強材とすることを特徴とする基礎杭の施工方法。
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JP2003422236A JP4244320B2 (ja) | 2003-12-19 | 2003-12-19 | 基礎杭の施工方法 |
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JP2003422236A JP4244320B2 (ja) | 2003-12-19 | 2003-12-19 | 基礎杭の施工方法 |
Publications (2)
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JP2005180019A JP2005180019A (ja) | 2005-07-07 |
JP4244320B2 true JP4244320B2 (ja) | 2009-03-25 |
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JP2003422236A Expired - Lifetime JP4244320B2 (ja) | 2003-12-19 | 2003-12-19 | 基礎杭の施工方法 |
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JP (1) | JP4244320B2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105862731A (zh) * | 2016-06-02 | 2016-08-17 | 中交公局第二工程有限公司 | 一种大直径桩基钢筋笼钢板肋加强圈 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101722454B1 (ko) * | 2015-08-07 | 2017-04-04 | 주식회사 장평건설 | 중공관 지지장치 |
CN112482369B (zh) * | 2020-11-24 | 2022-01-28 | 河海大学 | 一种基于仿生学的静压式后撑螺旋桩及其施工方法 |
CN115369870B (zh) * | 2022-09-22 | 2023-08-01 | 中国五冶集团有限公司 | 一种后浇抗浮锚杆 |
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2003
- 2003-12-19 JP JP2003422236A patent/JP4244320B2/ja not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105862731A (zh) * | 2016-06-02 | 2016-08-17 | 中交公局第二工程有限公司 | 一种大直径桩基钢筋笼钢板肋加强圈 |
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JP2005180019A (ja) | 2005-07-07 |
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