نتایج جستجو برای: cyclic triaxial test
تعداد نتایج: 908347 فیلتر نتایج به سال:
The smoothness of high-speed railway is extremely strict. As an important part the foundation, subgrade structure has strict deformation requirements. It necessary to ensure that does not have plastic cumulative under long-term cyclic load train, which most critical geodynamic problem in subgrade. This paper studied characteristics filling train loading through triaxial test, three types accumu...
a framework for development of constitutive models including damage progress, based on semi-micromechanical aspects of plasticity is proposed for concrete. the model uses sub-loading surface with multilaminate framework to provide kinematics and isotropic hardening/softening in the ascending/descending branches of loading and can be able to keep stress/stain paths histories for each plane separ...
The engineering behavior of nonplastic silts is more difficult to characterize than is the behavior of clay or sand. Especially, behavior of silty soils is important in view of the seismicity of several regions of alluvial deposits in the world, such as the United States, China, and Turkey. In several hazards substantial ground deformation, reduced bearing capacity, and liquefaction of silty so...
In this study artificial neural networks (ANN) are used to simulate the monotonic and cyclic behaviour of sands observed in laboratory tests on Karlsruhe sand under drained undrained conditions. A genetic algorithm (GA) is obtain an optimal framework for ANN. The results show that proposed adaptive network (GANN) can effectively triaxial saturated isotropic or anisotropic consolidation. GANN al...
Cyclic loading–induced deformation of soil is a common problem in engineering practice. In current practice, however, monotonic triaxial tests are more commonly used due to the availability apparatus and ease operation. Thus, it would be very useful practical if could evaluate behavior under cyclic loading. This study aims find an explicit relationship between saturated soft clay. Six nine comp...
One of the main issues in design foundations is correct forecast development long-term deformations (settlement) foundations. Among factors affecting settlement, one can single out neglect changes rheological parameters soil time and loading regime, as well processes hardening time. The work presents results a study behaviour samples clayey with disturbed structure under conditions triaxial cyc...
Aeolian sand is a special roadbed filler, but its three-dimensional mechanical properties are rarely studied. To obtain the characteristic of deformation, strength on deviatoric plane, and failure in three dimensions, series triaxial drained tests aeolian Tengger Desert, under condition constant average principal stress, p, were conducted by an equivalent alternative method to achieve true stre...
On the basis of plastic bounding surface model, the damage theory for structured soils and unsaturated soil mechanics, an elastoplastic model for unsaturated loessic soils under cyclic loading has been elaborated. Firstly, the description of bond degradation in a damage framework is given, linking the damage of soil’s structure to the accumulated strain. The Barcelona Basic Model (BBM) was cons...
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