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  1. 防災科研関係論文

Shear and compression strain development in sandy model slope under repeated rainfall

https://nied-repo.bosai.go.jp/records/2814
https://nied-repo.bosai.go.jp/records/2814
7ecb27cd-3768-41e4-9035-f5eb629c8387
Item type researchmap(1)
公開日 2023-04-27
タイトル
言語 en
タイトル Shear and compression strain development in sandy model slope under repeated rainfall
言語
言語 eng
著者 Katsuo Sasahara

× Katsuo Sasahara

en Katsuo Sasahara

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Naoki Sakai

× Naoki Sakai

en Naoki Sakai

Search repository
抄録
内容記述タイプ Other
内容記述 © 2017 Repeated rainfall on natural slope may cause repeated loading and unloading of pore pressure in the slope. The deformation behavior and soil-water conditions in a model slope were monitored under repeated rainfall to examine the influence of repeated rainfall on the deformation of the slope. The results show that the shear and compression deformation of the soil layer developed not only during the wetting process but also during the drying process. The surface and vertical displacement of the slope increased as the groundwater level (G.W.L.) increased during the first wetting process and remained constant during the subsequent drying process. The displacements showed small progress until the maximum G.W.L. of the first wetting process and then increased significantly at the next wetting process. The shear and compression strain remained constant as the suction decreased during the wetting processes and increased with the increase of suction during the drying processes; the strains significantly increased with a small decrease in the suction and then significantly increased with the generation of the pore pressure at the final rainfall event. The relationship between the shear strain and the compression strain was not affected by the repeated loading and unloading of suction. The relationship between the surface displacement and the vertical displacement was also free from the variation of the suction due to the repeated rainfalls. Strain increased with the increase in the pore pressure and the maximum pore pressure at a deeper layer was larger than at a shallower layer. The increase in the vertical displacement to the increase of the surface displacement approaches zero with the increase in the shear strain at the soil layer, denoting a failure state of the soil layer.
言語 en
書誌情報 en : Soils and Foundations

巻 57, 号 6, p. 920-934, 発行日 2017-12
出版者
言語 en
出版者 JAPANESE GEOTECHNICAL SOC
ISSN
収録物識別子タイプ ISSN
収録物識別子 0038-0806
DOI
関連識別子 10.1016/j.sandf.2017.08.021
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