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Dynamic behavior of natural sand soils and fiber reinforced soils in heavy-haul railway embankment under multistage cyclic loading
Graphical abstract Display Omitted
Highlights Dynamic behavior of soils for heavy-haul railway embankment. Hardin hyperbolic model agrees well with the experimental data. Investigation on the loading frequency, water content, and compaction degree. Influence of fiber length, confining pressure, and fiber content. Formulating three empirical expressions.
Abstract In this study, dynamic triaxial tests of natural sand soils and fiber reinforced soils were conducted. The influence of loading frequency, water content, and compaction degree on the dynamic shear modulus and damping ratio of natural soils were identified. Different fiber length, confining pressure, and fiber content were studied to gain the dynamic characteristics of fiber reinforced soils. The results show that the water content and compaction degree has a significant effect on the dynamic behavior of natural soils, and confining pressure and fiber content has a visible reinforcement effect on the dynamic characteristic of fiber reinforced soils. The empirical formulas of maximum dynamic shear modulus (G d max), ultimate shear stress (τ dult), and damping ratio () were generate, which can provide references for fiber reinforced soil design.
Dynamic behavior of natural sand soils and fiber reinforced soils in heavy-haul railway embankment under multistage cyclic loading
Graphical abstract Display Omitted
Highlights Dynamic behavior of soils for heavy-haul railway embankment. Hardin hyperbolic model agrees well with the experimental data. Investigation on the loading frequency, water content, and compaction degree. Influence of fiber length, confining pressure, and fiber content. Formulating three empirical expressions.
Abstract In this study, dynamic triaxial tests of natural sand soils and fiber reinforced soils were conducted. The influence of loading frequency, water content, and compaction degree on the dynamic shear modulus and damping ratio of natural soils were identified. Different fiber length, confining pressure, and fiber content were studied to gain the dynamic characteristics of fiber reinforced soils. The results show that the water content and compaction degree has a significant effect on the dynamic behavior of natural soils, and confining pressure and fiber content has a visible reinforcement effect on the dynamic characteristic of fiber reinforced soils. The empirical formulas of maximum dynamic shear modulus (G d max), ultimate shear stress (τ dult), and damping ratio () were generate, which can provide references for fiber reinforced soil design.
Dynamic behavior of natural sand soils and fiber reinforced soils in heavy-haul railway embankment under multistage cyclic loading
Zhao, Yingying (author) / Yang, Yang (author) / Ling, Xianzhang (author) / Gong, Weiming (author) / Li, Guoyu (author) / Su, Lei (author)
2020-12-29
Article (Journal)
Electronic Resource
English
Mechanical Behaviors of Natural Sand Soils and Modified Soils in Heavy-Haul Railway Embankment
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