A Parametric study on unsaturated soil slope stability using Apparent Cohesion Method
碩士 === 國立臺灣科技大學 === 營建工程系 === 107 === ABSTRACT In recent years, there has been increased land development and construction in unsaturated soil slopes in Northern Taiwan due to economic growth and urbanization (Lin et al., 2016). Consequently, slope stability problems have received increased attenti...
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ndltd-TW-107NTUS55120882019-10-24T05:20:29Z http://ndltd.ncl.edu.tw/handle/f9jgz7 A Parametric study on unsaturated soil slope stability using Apparent Cohesion Method A Parametric study on unsaturated soil slope stability using Apparent Cohesion Method Joram Mburu Joram Mburu 碩士 國立臺灣科技大學 營建工程系 107 ABSTRACT In recent years, there has been increased land development and construction in unsaturated soil slopes in Northern Taiwan due to economic growth and urbanization (Lin et al., 2016). Consequently, slope stability problems have received increased attention. Since most soils occur in unsaturated state in nature, it is prudent to incorporate the contribution of apparent cohesion in slope stability analysis which is attributable to the presence of matric suction in the unsaturated layer of the soil. Consequently, a parametric study is conducted on c-Ф’ soils taking into consideration the apparent cohesion in the unsaturated layer by dividing the substrata into different layers and conferring to each layer a particular cohesion value. A parallel set of analyses is carried out by directly inputting unsaturated soil parameters, ψ_aev, Ф^b in the RS2 program. The two approaches use the strength reduction technique. According to the findings of this study, the first approach named ‘apparent cohesion method’ yields consistent, reliable and conservative results in comparison with the second approach, ‘the unsaturated effect method.’ Thus, it is a viable alternative slope stability analysis method. An-Jui Li 李安叡 2019 學位論文 ; thesis 159 en_US |
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碩士 === 國立臺灣科技大學 === 營建工程系 === 107 === ABSTRACT
In recent years, there has been increased land development and construction in unsaturated soil slopes in Northern Taiwan due to economic growth and urbanization (Lin et al., 2016). Consequently, slope stability problems have received increased attention. Since most soils occur in unsaturated state in nature, it is prudent to incorporate the contribution of apparent cohesion in slope stability analysis which is attributable to the presence of matric suction in the unsaturated layer of the soil. Consequently, a parametric study is conducted on c-Ф’ soils taking into consideration the apparent cohesion in the unsaturated layer by dividing the substrata into different layers and conferring to each layer a particular cohesion value. A parallel set of analyses is carried out by directly inputting unsaturated soil parameters, ψ_aev, Ф^b in the RS2 program. The two approaches use the strength reduction technique. According to the findings of this study, the first approach named ‘apparent cohesion method’ yields consistent, reliable and conservative results in comparison with the second approach, ‘the unsaturated effect method.’ Thus, it is a viable alternative slope stability analysis method.
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author2 |
An-Jui Li |
author_facet |
An-Jui Li Joram Mburu Joram Mburu |
author |
Joram Mburu Joram Mburu |
spellingShingle |
Joram Mburu Joram Mburu A Parametric study on unsaturated soil slope stability using Apparent Cohesion Method |
author_sort |
Joram Mburu |
title |
A Parametric study on unsaturated soil slope stability using Apparent Cohesion Method |
title_short |
A Parametric study on unsaturated soil slope stability using Apparent Cohesion Method |
title_full |
A Parametric study on unsaturated soil slope stability using Apparent Cohesion Method |
title_fullStr |
A Parametric study on unsaturated soil slope stability using Apparent Cohesion Method |
title_full_unstemmed |
A Parametric study on unsaturated soil slope stability using Apparent Cohesion Method |
title_sort |
parametric study on unsaturated soil slope stability using apparent cohesion method |
publishDate |
2019 |
url |
http://ndltd.ncl.edu.tw/handle/f9jgz7 |
work_keys_str_mv |
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