Effect of density and compressibility on K0 of cohesionless soils |
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Authors: | Peijun Guo |
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Affiliation: | (1) Department of Civil Engineering, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L7, Canada |
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Abstract: | This paper revisits the earth pressure coefficient at rest K 0 of granular materials, with the focus being placed on the variation of K 0 with the internal friction angle, density and compressibility of soils. Following laboratory tests that are carried out to determine K 0 of two granular materials, the experimental data are interpreted using the original hypoplasticity model for sand proposed by von Wolffersdorff [49]. K 0 is generally a function of void ratio, stress level and the critical state friction angle; it can be alternatively related to the compressibility of soil. The results show that Jáky’s equation may still be considered as a reasonable representation of K 0 for granular soils statistically, even though it may not be able to reproduce the experimental data of a specific soil. |
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