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Excess pore water pressure generation in poorly graded sands with varying particle shapes and relative densities
https://orcid.org/0000-0003-1489-4861
https://orcid.org/0000-0002-7900-9184
https://orcid.org/0000-0002-1150-3733
Abstract In this study, a series of cyclic triaxial tests were conducted on two poorly graded sands with different particle shapes. The experimental results were integrated with test results reported in the literature to construct a comprehensive database for investigating the effects of particle shape and relative density on excess pore water pressure (EPWP) generation. The sand types in the database were divided into three groups based on the particle shape: subrounded, subangular, and angular. The test results showed that the particle shape and relative density influenced the axial strain development and EPWP generation during undrained cyclic loading. As the relative density increased, the effect of the particle angularity on the shape of the EPWP generation curves decreased. The normalized EPWP generation curves of the subangular particles (C306 sand) exhibited a strong dependence on the relative density. However, the angular and subrounded particles exhibited a weaker influence than the subangular particles on EPWP change for different relative densities. A model was established to predict the EPWP generation with variations in the particle shape and relative density.
Highlights A study that discussed the influences of relative density (Dr) and particle shapes on the excess pore water pressure (EPWP) generation curves. A comprehensive data base of EPWP generation curves was built based on the data from literatures and this study. Through distinguishing cyclic mobility and flow liquefaction, the excess pore water pressure generation curves were categorized into three different groups referring to different particle shapes. A model was proposed in this study to simulate the EPWP generation curves based on particle shapes and Drs, and the predictive results were also shown.
Excess pore water pressure generation in poorly graded sands with varying particle shapes and relative densities
https://orcid.org/0000-0003-1489-4861
https://orcid.org/0000-0002-7900-9184
https://orcid.org/0000-0002-1150-3733
Abstract In this study, a series of cyclic triaxial tests were conducted on two poorly graded sands with different particle shapes. The experimental results were integrated with test results reported in the literature to construct a comprehensive database for investigating the effects of particle shape and relative density on excess pore water pressure (EPWP) generation. The sand types in the database were divided into three groups based on the particle shape: subrounded, subangular, and angular. The test results showed that the particle shape and relative density influenced the axial strain development and EPWP generation during undrained cyclic loading. As the relative density increased, the effect of the particle angularity on the shape of the EPWP generation curves decreased. The normalized EPWP generation curves of the subangular particles (C306 sand) exhibited a strong dependence on the relative density. However, the angular and subrounded particles exhibited a weaker influence than the subangular particles on EPWP change for different relative densities. A model was established to predict the EPWP generation with variations in the particle shape and relative density.
Highlights A study that discussed the influences of relative density (Dr) and particle shapes on the excess pore water pressure (EPWP) generation curves. A comprehensive data base of EPWP generation curves was built based on the data from literatures and this study. Through distinguishing cyclic mobility and flow liquefaction, the excess pore water pressure generation curves were categorized into three different groups referring to different particle shapes. A model was proposed in this study to simulate the EPWP generation curves based on particle shapes and Drs, and the predictive results were also shown.
Excess pore water pressure generation in poorly graded sands with varying particle shapes and relative densities
https://orcid.org/0000-0003-1489-4861
https://orcid.org/0000-0002-7900-9184
https://orcid.org/0000-0002-1150-3733
Abstract In this study, a series of cyclic triaxial tests were conducted on two poorly graded sands with different particle shapes. The experimental results were integrated with test results reported in the literature to construct a comprehensive database for investigating the effects of particle shape and relative density on excess pore water pressure (EPWP) generation. The sand types in the database were divided into three groups based on the particle shape: subrounded, subangular, and angular. The test results showed that the particle shape and relative density influenced the axial strain development and EPWP generation during undrained cyclic loading. As the relative density increased, the effect of the particle angularity on the shape of the EPWP generation curves decreased. The normalized EPWP generation curves of the subangular particles (C306 sand) exhibited a strong dependence on the relative density. However, the angular and subrounded particles exhibited a weaker influence than the subangular particles on EPWP change for different relative densities. A model was established to predict the EPWP generation with variations in the particle shape and relative density.
Highlights A study that discussed the influences of relative density (Dr) and particle shapes on the excess pore water pressure (EPWP) generation curves. A comprehensive data base of EPWP generation curves was built based on the data from literatures and this study. Through distinguishing cyclic mobility and flow liquefaction, the excess pore water pressure generation curves were categorized into three different groups referring to different particle shapes. A model was proposed in this study to simulate the EPWP generation curves based on particle shapes and Drs, and the predictive results were also shown.
Excess pore water pressure generation in poorly graded sands with varying particle shapes and relative densities
Chu, Min-Chien (author) / Tsai, Chi-Chin (author) / Ge, Louis (author)
2024-03-04
Article (Journal)
Electronic Resource
English
Determination of Maximum and Minimum Densities of Poorly Graded Sands Using a Simplified Method
| British Library Online Contents | 2006