10 Result(s)
within
Peijun Guo
Soft and Granular Matter, Complex Fluids and Microfluidics
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Article
Effect of density and compressibility on K 0 of cohesionless soils
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...
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Article
Critical length of force chains and shear band thickness in dense granular materials
This paper investigates the existence of the critical force chain length and the buckling of unconfined grain columns in dense granular materials. Tests on assemblies of flat pentagon photoelastic particles we...
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Experimental analysis on settlement controlling of geogrid-reinforced pile-raft-supported embankments in high-speed railway
Centrifugal model tests were performed to investigate the effectiveness of settlement control using geogrid-reinforced pile-raft-supported embankments for high-speed railways on collapsible loess. Firstly, the...
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Article
Capillary interaction-induced rolling resistance between elliptical particles and its influence on grain column length at pendular state
This paper investigates capillary torque induced by capillary interaction between mono-sized elliptical disks within the pendular regime. When relative rotation between a pair of elliptical particles (2D disk...
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Article
Fabric evolution of granular materials along imposed stress paths
The stress–strain behavior of a granular material is dominated by its internal structure, which is related to the spatial connectivity of particles, and the force chain network. In this study, a series of disc...
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Induced force chain anisotropy of cohesionless granular materials during biaxial compression
This paper investigates the induced anisotropy and multi-scale shear characteristics of granular materials by quantifying force chain distribution in two-dimensional specimens of rigid particles under quasi-st...
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Article
Micromechanical analysis of non-coaxiality between stress and strain increment in granular materials
It is known that non-coaxiality between the directions of the principal stresses and the principal plastic strain increments in granular material is physically resulted from the material and mechanical anisotr...
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Article
Dynamic characteristics of multiscale longitudinal stress and particle rotation in ballast track under vertical cyclic loads
Loads transfer in ballast track through contacts among randomly distributed ballast particles and have strong heterogeneity. Since the size ratio between ballast track and ballast particles is generally small,...
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Experimental study on dynamic characteristics of granular materials under axial high-frequency vibration
The fundamental understanding of the behavior of granular materials by the effect of vibration is necessary to properly address a number of engineering issues, such as long-term settlement of high-speed railwa...
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Article
Experimental study on deformation and strength characteristics of granular soil-structure interface under coupled monotonic shear and vibration using a modified direct shear apparatus
Soil-structure interaction under vibration becomes an important concern for the underground structure below or adjacent to a railway line as train speed is continuously raised. Although more and more related w...
