JP4966675B2 - H型pc杭の根固め方法 - Google Patents
H型pc杭の根固め方法 Download PDFInfo
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- JP4966675B2 JP4966675B2 JP2007012994A JP2007012994A JP4966675B2 JP 4966675 B2 JP4966675 B2 JP 4966675B2 JP 2007012994 A JP2007012994 A JP 2007012994A JP 2007012994 A JP2007012994 A JP 2007012994A JP 4966675 B2 JP4966675 B2 JP 4966675B2
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- 238000000034 method Methods 0.000 title claims description 27
- 239000004567 concrete Substances 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000007596 consolidation process Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 11
- 238000009412 basement excavation Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000011513 prestressed concrete Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Description
1.施工時の環境負荷低減、
2.止水性の確保、
3.地震時安全性の担保、
4.工期の短縮
であり、それらを勘案し、杭断面形状・曲げ耐力・施工方法が決定されていた。また、上記コンセプトを検証するために、
(イ)掘削・圧入時の振動・騒音の計測
(ロ)短期高水圧(0.2MPa)および長期(2年)低水圧に対する止水性能確認試験
(ハ)場所打ちコンクリートとの剛結合耐震性能確認試験
(ニ)歩掛り調査
を実施した。その結果、優れた性能を確認し、道路擁壁・地下駐輪場の側壁・河川護岸および防水堤として既に施工実績を有している。
11 ウエブ
12 フランジ
13 縦凹溝
14 下端面
15 下端部
16 外表面
20 袴状治具
21,22,23 側板
25 取付部
30 オーガードリル
31 スパイラル羽根
32 先端部
33 掘削刃物
34 拡径ビット
35 オーガードリル羽根先端の軌跡
36 拡径刃先の軌跡
40 支持地盤
Claims (3)
- H型PC杭の下端を支持地盤に支持させる根固め方法において、H型PC杭の下端に袴状治具を取付け、H型PC杭の左右の縦凹溝中に添装したオーガードリル下端の拡径ビットにより前記袴状治具内の支持地盤を掘削しつつ杭を圧下し、前記袴状治具を支持地盤中に貫入した後、該袴状治具及びH型PC杭の空洞内に所定高さのコンクリートを打設することを特徴とするH型PC杭の根固め方法。
- 前記袴状治具は隣接杭との係合部を除く杭断面の外縁を包絡する形状の鋼板製筒状で、杭下端より杭断面の短辺長の1倍以上の長さが下方に延出している中空体であることを特徴とする請求項1記載のH型PC杭の根固め方法。
- 前記所定高さは杭断面の短辺長の4倍以上であることを特徴とする請求項1又は2記載のH型PC杭の根固め方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007012994A JP4966675B2 (ja) | 2007-01-23 | 2007-01-23 | H型pc杭の根固め方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007012994A JP4966675B2 (ja) | 2007-01-23 | 2007-01-23 | H型pc杭の根固め方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008179957A JP2008179957A (ja) | 2008-08-07 |
JP4966675B2 true JP4966675B2 (ja) | 2012-07-04 |
Family
ID=39724056
Family Applications (1)
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JP2007012994A Active JP4966675B2 (ja) | 2007-01-23 | 2007-01-23 | H型pc杭の根固め方法 |
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JP (1) | JP4966675B2 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5280257B2 (ja) * | 2009-03-12 | 2013-09-04 | 三谷セキサン株式会社 | 基礎杭構造及び基礎杭の構築方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2692711B2 (ja) * | 1989-04-27 | 1997-12-17 | 西鉄建機株式会社 | コンクリート製矢板及び同矢板の圧入方法 |
JP2691514B2 (ja) * | 1994-07-22 | 1997-12-17 | 喜彦 河合 | 杭の施工法および装置 |
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2007
- 2007-01-23 JP JP2007012994A patent/JP4966675B2/ja active Active
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