Yield is subject to strong genotype-by-environment (G × E) interactions in the field, especially under abiotic constraints such as soil water deficit (drought [D]) and high temperature (heat [H]). Since environmental conditions show strong fluctuations during the whole crop cycle, geneticists usually do not consider environmental measures as quantitative variables but rather as factors in multi...

Pseudostatic analysis is one of the simplest approaches used in earthquake engineering to analyze the seismic response of soil embankments and slopes. However, the choice of seismic coefficients used in the analysis can be arbitrary and generally lacks rationale. To investigate this, a parametric study was performed on a soil embankment of varied geometric characteristics and soil properties su...

Soils are mixtures of three phases, a porous soil skeleton of solid mineral particles and two fluids water and air filling the pores completely. The soil skeleton and the fluids can move depending on the constitutive behaviour of all constituents and interactions between them. In general a coupled deformation/seepage problem exists which can be uncoupled for certain circumstances. Mechanical mo...

Stiffness degradation and damping represent some of the most well-known aspects of cyclic soil behavior. While standard equivalent linear approaches reproduce these features by (separately) prescribing stiffness reduction and damping curves, in this paper a multiaxial visco-elastic-plastic model is developed for the simultaneous simulation of both cyclic curves over a wide cyclic shear strain r...

The microstructure can have an important impact on the hydraulic and mechanical behaviors of unsaturated soil; therefore, it must be considered in constitutive models to enable accurate predictions soil behavior. This paper focused modeling soils that exhibited a dual porosity structure. Based assumption macro micropores contained double structure had different influences behaviors, effective d...


 Research is ongoing to find theoretical solution three-dimensional piling compaction. Considering the spacial-axis-symmetric characteristics, boundary surface of pile-soil interaction expressed by polynomials different orders. First, curve family parameter introduced construct displacement and integral function. Then, derived combining constitutive relation model Duncan-Chang variational...

Unsaturated soil exhibits extremely complex engineering mechanical properties under the coupling effect of moistening and stress fields. Firstly, effective principle limit equilibrium conditions unsaturated fields were discussed based on basic principles soil. Secondly, a fractional-order model considering viscoelasticity strain hardening was established fractional calculus theory. Then, damage...

A new simple shear apparatus is fabricated which is capable of applying monotonic and cyclic load on soil specimens. A series of tests was conducted to study the pore pressures (or suction), volume change, and shear behavior of the soil samples with anisotropic consolidation pressure. The simple shear apparatus is capable of controlling as well as measuring pore-air and pore-water pressure in t...

A framework alternative to that of classical slope stability analysis is developed, wherein the soil mass is treated as a continuum and in-situ soil stresses and strengths are computed accurately using inelastic "nite element methods with general constitutive models. Within this framework, two alternative methods of stability analysis are presented. In the "rst, the strength characteristics of ...