000020185 001__ 20185
000020185 005__ 20170118182358.0
000020185 04107 $$aeng
000020185 046__ $$k2017-01-09
000020185 100__ $$aZhao, Kai
000020185 24500 $$aEffect of the Principal Stress Direction on Undrained Cyclic Behaviour of Saturated Silt Using a Hollow Cylinder Apparatus

000020185 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000020185 260__ $$b
000020185 506__ $$arestricted
000020185 520__ $$2eng$$aThe impact of fabric anisotropy on the behaviour of soil has been paid great attention; however, the effects of the principal stress direction on the cyclic undrained response of saturated silt are not fully understood. An experimental study aimed at providing insights into the effect of principal stress direction on the cyclic behaviour of saturated silt with a relative density of 50% under isotropic consolidation condition is presented. A series of cyclic shear tests were conducted by GDS hollow cylinder torsional apparatus that can apply four dynamic loads, namely inner pressure, outer pressure, axial load and torque. Specimens at identical initial states were subjected to 90° jump rotation of principal stresses from different principal stress direction angle ασ0 at the initial time of cyclic loading with a constant intermediate principal stress coefficient. This investigation was placed on the influence of ασ0 on the pore pressure response, deformation characteristics and cyclic shear strength. The results show that the principal stress direction has a considerable influence on cyclic shear strength of saturated silt. It decreases significantly as the ασ0 increased to approximately 45°, and then increases with the ασ0 increased to 90°. This observation is considered to be directly related to the soil fabric anisotropy.

000020185 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000020185 653__ $$asilt, principal stress direction, excess pore pressure, deviatoric strain, Cyclic shear strength

000020185 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000020185 720__ $$aZhao, Kai$$iChen, Guoxing$$iXu, Lingyu$$iZhuang, Haiyang$$iZhou, Zhenglong
000020185 8560_ $$ffischerc@itam.cas.cz
000020185 8564_ $$s1483676$$uhttps://invenio.itam.cas.cz/record/20185/files/706.pdf$$yOriginal version of the author's contribution as presented on USB, paper 706.
000020185 962__ $$r16048
000020185 980__ $$aPAPER