000018402 001__ 18402
000018402 005__ 20170118182220.0
000018402 04107 $$aeng
000018402 046__ $$k2017-01-09
000018402 100__ $$aNhan, Tran Thanh
000018402 24500 $$aPore Water Pressure and Settlement Induced By Multi-Directional Cyclic Shear of High Plasticity Clay

000018402 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018402 260__ $$b
000018402 506__ $$arestricted
000018402 520__ $$2eng$$aIn this paper, by using the multi-directional cyclic simple shear test apparatus, normally consolidated specimens of Kitakyushu clay (plasticity index, I p = 63.8) were subjected to the uni-directional and multi-directional cyclic shears (in the multi-directional cyclic shear test, uniform cyclic shear strains were applied to the soil specimen from two perpendicular directions with various phase differences) in which the shear strain amplitude was changed in the range from 0.05% to 2.0%. The cyclic shear induced-pore water pressure (U dyn ) and settlement in strain (ε v , %) were observed and compared with the calculated ones obtained by the conventional estimation method, where the pore water pressure ratio (U dyn /σ’ v0 ) is expressed by equations including the number of cycles (n) and two experimental parameters (α and β). It is shown from the observed and calculated results that the changes of α and β can be expressed by a function of shear strain amplitude. In the recompression stage after undrained cyclic shear, the compression index for the uni-directional cyclic shear C dynU is obtained as 0.233×C c and for the multi-directional cyclic shear C dynM as 0.250×C c , respectively, where C c is the virgin compression index. In conclusion, the cyclic shear induced-settlement of clay with high plasticity index can be predicted by using these indices.

000018402 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018402 653__ $$acyclic simple shear, sensitive clay, undrained

000018402 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018402 720__ $$aNhan, Tran Thanh$$iMatsuda, Hiroshi$$iSato, Hidemasa
000018402 8560_ $$ffischerc@itam.cas.cz
000018402 8564_ $$s574498$$uhttps://invenio.itam.cas.cz/record/18402/files/1381.pdf$$yOriginal version of the author's contribution as presented on USB, paper 1381.
000018402 962__ $$r16048
000018402 980__ $$aPAPER