JP4842350B2 - 地盤改良工法 - Google Patents
地盤改良工法 Download PDFInfo
- Publication number
- JP4842350B2 JP4842350B2 JP2009152321A JP2009152321A JP4842350B2 JP 4842350 B2 JP4842350 B2 JP 4842350B2 JP 2009152321 A JP2009152321 A JP 2009152321A JP 2009152321 A JP2009152321 A JP 2009152321A JP 4842350 B2 JP4842350 B2 JP 4842350B2
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- JP
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- Prior art keywords
- ground
- pile
- piles
- sand
- steel material
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- 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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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Description
ただし、σs:鋼材周りの土と鋼材との付着応力
As:鋼材の付着面積(鋼材長×鋼材周長)
単管 周長:15.268cm
地盤強度 せん断抵抗角φ:40°
土の単位体積重量:1.8tf/m3
土の付着力=土被り圧(土の単位体積重量×平均深度)
=1.8tf/m3×2m=3.6tf/m2
側圧係数k=2.0 (サンドコンパクション施工時)
引き抜き力=3.6tf/m2・2.0・tan(40)×0.15268m×4m=3.7tf/本
31 鋼材
G 地表面
Claims (5)
- 杭を地盤内に造成する地盤改良工法において、
杭造成により生じる側方圧力の増加によって地盤の隆起を減少させる方向に作用するような摩擦抵抗を側面に得ることができる位置に棒状体を杭の造成前に地中に差し込むことで、前記杭造成による周辺地盤の隆起を減少させることを特徴とする地盤改良工法。 - 複数の杭を地盤内に造成する前に前記杭の周囲に複数の棒状体を差し込み、
前記杭の造成による前記杭間における側方圧力の増加が前記棒状体の側面の摩擦抵抗を大きくする請求項1に記載の地盤改良工法。 - 前記杭が砂杭である請求項1または2に記載の地盤改良工法。
- 前記杭が前記地盤内に強制圧入される撹拌杭である請求項1または2に記載の地盤改良工法。
- 前記杭の造成後に前記棒状体を引き抜くかまたはそのまま地中に放置する請求項1乃至4のいずれか1項に記載の地盤改良工法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009152321A JP4842350B2 (ja) | 2009-06-26 | 2009-06-26 | 地盤改良工法 |
Applications Claiming Priority (1)
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JP2009152321A JP4842350B2 (ja) | 2009-06-26 | 2009-06-26 | 地盤改良工法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2011006946A JP2011006946A (ja) | 2011-01-13 |
JP4842350B2 true JP4842350B2 (ja) | 2011-12-21 |
Family
ID=43563887
Family Applications (1)
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JP2009152321A Active JP4842350B2 (ja) | 2009-06-26 | 2009-06-26 | 地盤改良工法 |
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JP (1) | JP4842350B2 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5812385B2 (ja) * | 2011-03-02 | 2015-11-11 | 五洋建設株式会社 | 地盤改良工法および棒状体アッセンブリ |
JP5713435B2 (ja) * | 2011-03-02 | 2015-05-07 | 五洋建設株式会社 | 地盤改良工法および棒状体アッセンブリ |
CN105133598A (zh) * | 2015-08-26 | 2015-12-09 | 水利部交通运输部国家能源局南京水利科学研究院 | 采用土工合成材料加筋的水泥搅拌桩结构及其施工方法 |
CN105780753B (zh) * | 2016-03-28 | 2018-08-10 | 北京中岩大地科技股份有限公司 | 固化土桩的施工方法 |
JP6943658B2 (ja) * | 2017-07-13 | 2021-10-06 | 株式会社不動テトラ | 砂質地盤締固め工法 |
JP7338119B2 (ja) * | 2018-01-24 | 2023-09-05 | 株式会社竹中工務店 | 浮上り抑制構造、及び逆打ち工法 |
JP7184244B2 (ja) * | 2018-01-24 | 2022-12-06 | 株式会社竹中工務店 | 浮上り抑制構造、及び逆打ち工法 |
CN110106759B (zh) * | 2019-05-24 | 2020-07-17 | 东北大学 | 一种沿海公路路基抗浮桩系统 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2804897B2 (ja) * | 1994-11-14 | 1998-09-30 | 中富 栗本 | 軟弱地盤の改良工法 |
JP2000345554A (ja) * | 1999-06-08 | 2000-12-12 | Fudo Constr Co Ltd | 地盤改良方法 |
JP2002173931A (ja) * | 2000-12-05 | 2002-06-21 | Sanei Engineering Kk | 地盤改良工法 |
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2009
- 2009-06-26 JP JP2009152321A patent/JP4842350B2/ja active Active
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JP2011006946A (ja) | 2011-01-13 |
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