JP2013221347A - 地盤構造および地盤改良方法 - Google Patents
地盤構造および地盤改良方法 Download PDFInfo
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- JP2013221347A JP2013221347A JP2012094368A JP2012094368A JP2013221347A JP 2013221347 A JP2013221347 A JP 2013221347A JP 2012094368 A JP2012094368 A JP 2012094368A JP 2012094368 A JP2012094368 A JP 2012094368A JP 2013221347 A JP2013221347 A JP 2013221347A
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- 239000004698 Polyethylene (PE) Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N Sodium silicate Chemical compound 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- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials 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Abstract
【解決手段】 地盤構造は、地震動が加えられることにより液状化する液状化層10と、液状化層10上に繊維が添加され撹拌混合された土砂により造成され、上部に車両が通行する舗装部12または構造物が構築される地盤改良体11とを含む。地盤改良方法は、液状化層10上の地盤表層部の土砂に繊維を添加し、撹拌混合して、液状化層10上に地盤改良体11を造成する工程を含む。
【選択図】 図1
Description
Claims (13)
- 地震動が加えられることにより液状化する液状化層と、
前記液状化層上に繊維が添加され撹拌混合された土砂により造成され、上部に車両が通行する舗装部または構造物が構築される地盤改良体とを含む、地盤構造。 - 前記地盤改良体は、前記土砂により一定間隔で交差するように格子状に造成された改良部を備える、請求項1に記載の地盤構造。
- 前記地盤改良体の少なくとも2つの側面に隣接し、前記液状化層の下部にまで延びる土留材が挿設された、請求項1または2に記載の地盤構造。
- 前記土留材は、水が流入する複数の穴が設けられ、内部に前記水が通る通路が形成された排水部材を備える、請求項3に記載の地盤構造。
- 前記土留材には開口部が設けられ、前記開口部を挿通するように設けられる排水材をさらに含む、請求項4に記載の地盤構造。
- 前記地盤改良体の少なくとも2つの側面に隣接し、前記液状化層の下部にまで延びるように、固化材を添加しつつ撹拌混合して造成される壁状改良体を備える、請求項1または2に記載の地盤構造。
- 前記土留材には開口部が設けられ、前記開口部を挿通するように設けられる排水材をさらに含む、請求項6に記載の地盤構造。
- 地盤構造を構築するために実施される地盤改良方法であって、地震動が加えられることにより液状化する液状化層上の地盤表層部の土砂に繊維を添加し、撹拌混合して、前記液状化層上に地盤改良体を造成する工程を含む、地盤改良方法。
- 前記造成する工程では、前記繊維が撹拌混合された土砂により一定間隔で交差するように格子状の改良部を造成することにより前記地盤改良体を造成する、請求項8に記載の地盤改良方法。
- 前記地盤改良体の造成後、前記地盤改良体の少なくとも2つの側面に隣接し、前記液状化層の下部にまで延びる土留材を挿設する工程を含む、請求項8または9に記載の地盤改良方法。
- 前記土留材には開口部が設けられていて、前記開口部を挿通するように排水材を設置する工程をさらに含む、請求項10に地盤改良方法。
- 前記地盤改良体の造成後、前記地盤改良体の少なくとも2つの側面に隣接する位置の地盤に、固化材を添加しつつ撹拌混合して壁状改良体を造成する工程を含む、請求項8または9に記載の地盤改良方法。
- 前記壁状改良体には開口部が設けられていて、前記開口部を挿通するように排水材を設置する工程を含む、請求項12に記載の地盤改良方法。
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JP2016011536A (ja) * | 2014-06-30 | 2016-01-21 | 株式会社竹中工務店 | 地下障害物の除去方法、及び、道路の構築方法 |
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