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発表 Seismic behaviour of a large-scale concrete-block retaining wall

作成年度 2019 年度
論文名 Seismic behaviour of a large-scale concrete-block retaining wall
論文名(和訳)
論文副題
発表会 7th International Symposium on Deformation Characteristics of Geomaterials
誌名 IS-Glasgow2019
巻・号・回  
発表年月日 2019/06/26 ~ 2019/06/28
所属研究室/機関名 著者名(英名)
施工技術チームNoboru Sato
施工技術チームToshikazu Sawamatsu
施工技術チームTakehiko Nitta
施工技術チームHiroaki Miyatake
東京大学生産技術研究所Kazuhito Kondo
抄録
In this study, an inclined model experiment and finite element analyses were conducted to evaluate the failure mode and seismic response of a dry-type large-scale concrete-block retaining wall (LCBW). In the experiment, the objective was to reproduce the sliding between concrete blocks that was observed in past cases LCBW damage in order to characterise the behaviour until failure. A numerical simulation corresponding to the experimental conditions was conducted by the finite element method (FEM). Dynamic analyses were also performed by FEM to investigate the seismic response of the concrete blocks under various ground conditions. The experimental results revealed that slip between the concrete blocks caused brittle failure of the LCBW. In the FEM simulation, the joint elements reproduced the experimentally observed sliding between the concrete blocks. A dynamic simulation of the full-scale model revealed that significant sliding and rocking of the concrete block occur in a dry-type LCBW. These findings indicate that stress concentration may occur at the heels of the concrete blocks during an earthquake.
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