000020292 001__ 20292
000020292 005__ 20170118182407.0
000020292 04107 $$aeng
000020292 046__ $$k2017-01-09
000020292 100__ $$aYamane, Yuichi
000020292 24500 $$aSeismic Analyses of Concrete Dam, Comparison Between Finite-Element Analyses and Seismic Records

000020292 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000020292 260__ $$b
000020292 506__ $$arestricted
000020292 520__ $$2eng$$aCurrently, in engineering practice, the main approach for dynamic analysis of concrete dams with finite-element method is still based on coarse simplification: fluid-structure interaction is generally taken into account with Westergaard addedmasses and soil-structure interaction is considered using massless foundation. But an increasing number of authors show that these simplified approaches tend to overestimate stresses. Consequently, dam-foundation rock interaction with radiative damping and dam-water interaction considering compressibility of water, partial absorption of hydrodynamic pressure waves by sediments at the lakebed, and semiunbounded extent of the reservoir and foundation rock domains must be taken into account. After a brief presentation of a more advanced model taking into account the mass of the foundation, viscous-spring boundary input model and potential-based fluid finite elements with absorptive boundaries, two existing Japanese dams, a gravity dam and an arch dam, are extensively studied. Earthquakes were recorded on each dam, allowing back analyses through comparison of simulated and recorded data at the base and crest of the dams. The dynamic response of each dam is simulated using data recorded at the foundation and the response is compared to the data recorded at sensor located at the dam’s crest. Methods are also compared in a stability assessment manner, as done in professional practice. Comparisons between analyses and records confirm that the conventional massless foundation/added masses approaches with 5% concrete damping greatly overestimates the response of the dam, particularly in the case of gravity dams.

000020292 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000020292 653__ $$adam, dam-water-foundation interaction, finite-element simulation

000020292 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000020292 720__ $$aYamane, Yuichi$$iKashiwayanagi, Masayuki$$iRobbe, Emmanuel
000020292 8560_ $$ffischerc@itam.cas.cz
000020292 8564_ $$s1968521$$uhttps://invenio.itam.cas.cz/record/20292/files/919.pdf$$yOriginal version of the author's contribution as presented on USB, paper 919.
000020292 962__ $$r16048
000020292 980__ $$aPAPER