Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Prediction model for small-strain shear modulus of non-plastic fine–coarse-grained soil mixtures based on extreme void ratios
https://orcid.org/0009-0006-2886-0506
Abstract The small-strain shear modulus G 0 is a fundamental parameter for characterizing the dynamic behavior of soils. In this study, bender element tests were performed to investigate how the effective confining stress σ' c, relative density D r, void ratio e, and a wide range of fines content FC (0%–100%) influence the G 0 of soil mixtures containing both fine and coarse grains. The results show that under the same e and σ' c, G 0 first decreases and then increases with increasing FC. Furthermore, as characteristic state parameters, the extreme void ratios (i.e., the maximum void ratio e max and the minimum void ratio e min) reflect comprehensively the particle size distribution and shape of fine–coarse-grained soil mixtures. Under the same σ' c, the lower limit of G 0 (G 0min) decreases with increasing e max and the upper limit (G 0max) decreases with increasing e min, and the extrapolated upper and lower limits of the normalized G 0/(σ' c/P a) show a negative power-law relationship with e min and e max, respectively. Empirical formulas are established for the G 0max and G 0min of fine–coarse-grained soil mixtures, and G 0 under various D r can be interpolated according to G 0min (for D r = 0) and G 0max (for D r = 1). Finally, a G 0 prediction model that offers reasonable characterization of fine–coarse-grained soil mixtures with different FC is established based on e min and e max.
Highlights A further investigation on the effect of fines content FC(0%∼100%) on small-strain shear modulus G 0 of soil. Under the same e and σ' c, the G 0 of mixtures first decreases and then increases with the increase of FC(0%–100%). The extreme void ratios can comprehensively reflect the particle size distribution and shape of fine-coarse-grained soil mixtures. A G 0 prediction model that characterizes different FC of mixtures is established based on the extreme void ratios.
Prediction model for small-strain shear modulus of non-plastic fine–coarse-grained soil mixtures based on extreme void ratios
https://orcid.org/0009-0006-2886-0506
Abstract The small-strain shear modulus G 0 is a fundamental parameter for characterizing the dynamic behavior of soils. In this study, bender element tests were performed to investigate how the effective confining stress σ' c, relative density D r, void ratio e, and a wide range of fines content FC (0%–100%) influence the G 0 of soil mixtures containing both fine and coarse grains. The results show that under the same e and σ' c, G 0 first decreases and then increases with increasing FC. Furthermore, as characteristic state parameters, the extreme void ratios (i.e., the maximum void ratio e max and the minimum void ratio e min) reflect comprehensively the particle size distribution and shape of fine–coarse-grained soil mixtures. Under the same σ' c, the lower limit of G 0 (G 0min) decreases with increasing e max and the upper limit (G 0max) decreases with increasing e min, and the extrapolated upper and lower limits of the normalized G 0/(σ' c/P a) show a negative power-law relationship with e min and e max, respectively. Empirical formulas are established for the G 0max and G 0min of fine–coarse-grained soil mixtures, and G 0 under various D r can be interpolated according to G 0min (for D r = 0) and G 0max (for D r = 1). Finally, a G 0 prediction model that offers reasonable characterization of fine–coarse-grained soil mixtures with different FC is established based on e min and e max.
Highlights A further investigation on the effect of fines content FC(0%∼100%) on small-strain shear modulus G 0 of soil. Under the same e and σ' c, the G 0 of mixtures first decreases and then increases with the increase of FC(0%–100%). The extreme void ratios can comprehensively reflect the particle size distribution and shape of fine-coarse-grained soil mixtures. A G 0 prediction model that characterizes different FC of mixtures is established based on the extreme void ratios.
Prediction model for small-strain shear modulus of non-plastic fine–coarse-grained soil mixtures based on extreme void ratios
https://orcid.org/0009-0006-2886-0506
Abstract The small-strain shear modulus G 0 is a fundamental parameter for characterizing the dynamic behavior of soils. In this study, bender element tests were performed to investigate how the effective confining stress σ' c, relative density D r, void ratio e, and a wide range of fines content FC (0%–100%) influence the G 0 of soil mixtures containing both fine and coarse grains. The results show that under the same e and σ' c, G 0 first decreases and then increases with increasing FC. Furthermore, as characteristic state parameters, the extreme void ratios (i.e., the maximum void ratio e max and the minimum void ratio e min) reflect comprehensively the particle size distribution and shape of fine–coarse-grained soil mixtures. Under the same σ' c, the lower limit of G 0 (G 0min) decreases with increasing e max and the upper limit (G 0max) decreases with increasing e min, and the extrapolated upper and lower limits of the normalized G 0/(σ' c/P a) show a negative power-law relationship with e min and e max, respectively. Empirical formulas are established for the G 0max and G 0min of fine–coarse-grained soil mixtures, and G 0 under various D r can be interpolated according to G 0min (for D r = 0) and G 0max (for D r = 1). Finally, a G 0 prediction model that offers reasonable characterization of fine–coarse-grained soil mixtures with different FC is established based on e min and e max.
Highlights A further investigation on the effect of fines content FC(0%∼100%) on small-strain shear modulus G 0 of soil. Under the same e and σ' c, the G 0 of mixtures first decreases and then increases with the increase of FC(0%–100%). The extreme void ratios can comprehensively reflect the particle size distribution and shape of fine-coarse-grained soil mixtures. A G 0 prediction model that characterizes different FC of mixtures is established based on the extreme void ratios.
Prediction model for small-strain shear modulus of non-plastic fine–coarse-grained soil mixtures based on extreme void ratios
Hang, Tianzhu (Autor:in) / Fan, Hongfei (Autor:in) / Xiao, Xing (Autor:in) / Zhang, Lei (Autor:in) / Liang, Ke (Autor:in) / Wu, Qi (Autor:in) / Chen, Guoxing (Autor:in)
06.10.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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