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発表 Deformation behavior of the multi-anchored reinforced soil wall constructed on soft ground

作成年度 2010年度
論文名 Deformation behavior of the multi-anchored reinforced soil wall constructed on soft ground
論文名(和訳) 軟弱地盤上に構築したアンカー式補強土壁工法の変形挙動に関する遠心力載荷実験
論文副題
発表会 7th International Conference on Physical Modelling in Geotechnics (第7回地盤の模型実験に関する国際会議)
誌名(No./号数)
発表年月日 2010/06/28 ~ 2010/07/01
所属研究室/機関名 著者名(英名)
寒地地盤チーム橋本 聖(HASHIMOTO Hijiri)
寒地地盤チーム西本 聡(NISHIMOTO Satoshi)
寒地地盤チーム林 宏親(HAYASHI Hirochika)
抄録
The construction of reinforced soil walls on soft ground such as cohesive soil (a soil type found[*]extensively in Japan) often involves ground improvement up to the firm load-bearing layers using techniques such as the deep mixing method. Manuals on reinforced soil wall construction stipulate limits for wall displacement、 but contain no provisions concerning settlement. However、 due to environmental factors such as efforts to reduce construction costs and shift toward performance-based design for earth structures、 ground improvement techniques that allow certain amounts of settlement are expected to be needed in the future. [*]For ground improvement that constrains the deformation behavior of reinforced soil walls、 this study focused on two methods . one in which the ground immediately below reinforced soil walls is made to float (referred to here as floating-type ground improvement) and one combining improved soil slabs with partially settled rectangular improved soil (referred to here as partial-settlement ground improvement). Centrifuge model testing was implemented to ascertain the deformation behavior of reinforced soil walls constructed using these ground improvement techniques. The stress state of partial-settlement ground improvement was also studied using FEM analysis.
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