000009804 001__ 9804
000009804 005__ 20141205153155.0
000009804 04107 $$aeng
000009804 046__ $$k2008-10-12
000009804 100__ $$aDakoulas, Panos
000009804 24500 $$aSeismic Performance of a Concrete Faced Rockfill Dam Using an Advanced Nonlinear 3D Numerical Analysis

000009804 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000009804 260__ $$b
000009804 506__ $$arestricted
000009804 520__ $$2eng$$aA general methodology is presented for advanced nonlinear 3D dynamic finite element analysis of concrete faced rockfill dams and applied to a dam build in a narrow canyon. Initially a detailed simulation of the phased construction and reservoir impoundment is conducted, using the Duncan and Chang (1970) constitutive model. After calculation of the initial stresses and deformations at the end of impoundment, the dynamic analysis is initiated using a nonlinear hysteretic model that is based on the initial dynamic stiffness of the rockfill material. The model produces hysteresis loops that are in agreement with the experimental data regarding the variation of the shear modulus and damping ratio with the amplitude of cyclic shear strain. The methodology is applied here to investigate the effect of (a) rockfill dynamic stiffness and (b) the possible development of seismic settlements on the seismic the response of the dam and the performance of the concrete slab and joints. Results are presented on the development of (a) tensile stresses at various locations within the concrete slab panels (b) joint separations due to movement of the slab panels and (c) high compressive stresses at the slab-to-slab vertical interfaces that may potentially lead to concrete fracture.

000009804 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009804 653__ $$aRockfill Dams, CFRD, 3D Geometry, Nonlinear Analysis, Hysteretic Damping, Dynamic Settlements

000009804 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000009804 720__ $$aDakoulas, Panos$$iEvangelou, Vasilios
000009804 8560_ $$ffischerc@itam.cas.cz
000009804 8564_ $$s899614$$uhttps://invenio.itam.cas.cz/record/9804/files/S13-045.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: S13-045.
000009804 962__ $$r9324
000009804 980__ $$aPAPER