Abstract
In order to investigate the effects of anisotropy of undisturbed loess on failure strength, dynamic shear modulus and damping ratio under cyclic loading, the dynamic characteristics of undisturbed loess in HaiDong area of Qinghai Province were studied by using the British GDS two-way dynamic triaxial test system. The results show that under the action of equal strain control cyclic load, as the number of cycles increases, the deformation of the sample gradually accumulates, the amplitude of dynamic strain decreases gradually, and the dynamic shear stress decreases. With the increase of dynamic shearing, the strain increases slowly and the strain hardening phenomenon appears. Different sampling angles have an important influence on the failure strength and dynamic shear modulus of undisturbed loess.
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