SHAKING TABLE TESTS ON COMBINED USE OF EPS BLOCK AND GEOGRID TO IMPROVE SEISMIC STABILITY OF RETAINING WALLS
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- KYOKAWA Hiroyuki
- 東京大学大学院 工学系研究科社会基盤学専攻
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- YAMAZAKI Yutaro
- 千代田化工建設会社，業務本部
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- KOSEKI Junichi
- 東京大学大学院 工学系研究科社会基盤学専攻
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- KONAMI Takeharu
- 岡三リビック株式会社,技術開発部
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- NISHI Tsuyoshi
- 株式会社CPC東日本本部技術部
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- KUBOTA Tatsuro
- 発泡スチロール土木工法開発機構
Bibliographic Information
- Other Title
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- EPSブロックとジオグリッドを併用した擁壁の耐震対策に関する振動台実験
- EPS ブロック ト ジオグリッド オ ヘイヨウ シタ ヨウヘキ ノ タイシン タイサク ニ カンスル シンドウダイ ジッケン
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Description
In order to study the effects of combined use of EPS (block of expanded polystyrene) and geogrid to improve seismic stability of a retaining wall, a series of 1g shaking table tests are conducted on a reduced-scale model of a cantilever type retaining wall and its backfill soil. It could be observed from experiment results that the base sliding and tilting of the wall can be further reduced by replacing partly the backfill soil with blocks of EPS in combination with the use of the middle-height geogrid. Moreover, the relative settlement of the backfill soil at the interface with the wall could be reduced by the combined use of EPS and geogrid. The resultant normal force and rotational moment acting on the wall from the backfill soil during excitation also became small for the reinforced wall with both EPS and geogrid.
Journal
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- Geosynthetics Engineering Journal
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Geosynthetics Engineering Journal 33 (0), 197-204, 2018
Japan Chapter of International Geosynthetics Society
