2024-06-20T10:00:16Z
https://u-ryukyu.repo.nii.ac.jp/oai
oai:u-ryukyu.repo.nii.ac.jp:02004594
2022-10-31T02:00:56Z
1642837622505:1642837905044:1642837925225
1642838403551:1642838407312
安定解析のc' - φ' 図に及ぼす地すべりの断面形状と土質強度の影響
Influence of geometric elements of landslide and soil strength on the c' - φ' diagram of stability analysis
陳, 伝勝
宜保, 清一
中村, 真也
木村, 匠
Chen, Chuansheng
Gibo, Seiichi
Nakamura, Shinya
Kimura, Sho
c’－tan’φ 図
地すべり事例
モデル地すべり
地すべり形状
土質強度
c' - tanφ' diagram
landslide cases
model landslide
geometric factors of landslide
soil strength
In this study, the c' - φ' diagram has been drawn up based on the stability analysis method, in which the residual factor is incorporated, concerning three landslides among which there are considerable variations in the cross section dimensions and soil strength. The characteristics of the c' - φ' diagram was extracted with an emphasis on the geometric elements and soil strength of the three landslides. Furthermore, the relationship between the c' - φ' diagram, the geometric elements of landslides and soil strength was clarified by means of various model landslides, which will be helpful in the creation and confirmation of the rationality of using the c' - φ' diagram in practice. Conclusions are drawn as follows :In the three landslides, the characteristics of the geometric elements and soil strength are reflected in the c'- φ' diagram having characteristic forms. The position of IP is decided by the movement of c'-tan φ' line controlled by the numerical value of Fs. The Influence of soil strength on the c'- φ' diagrams with the variation of groundwater level became obvious, and is reflected in the c'- φ' diagrams. The influence of length "L" is very minimal. Maximum thickness "D" has an effect on c' -intercept and inclination "B" of c'-tan φ' line, but has little impact on tan φ'-intercept whereas slope" α" has a significant impact on c' and tan φ' , but does not seem to have any effect on B. Influence of groundwater level appears as a large rightward shift of tan φ'. The soil strength at slip surface govern the cross section dimensions of landslide and has an influence on the c' - tan φ' diagram.
紀要論文
http://purl.org/coar/resource_type/c_6501
琉球大学農学部
2008-12
VoR
http://hdl.handle.net/20.500.12000/9910
0370-4246
AN00250548
琉球大学農学部学術報告
The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus
55
24
17
jpn
open access