Effect of base-rock characteristics on non-linear seismic respons of concrete gravity dams including dam-foundation interaction
- سال انتشار: 1391
- محل انتشار: نهمین کنگره بین الملی مهندسی عمران
- کد COI اختصاصی: ICCE09_655
- زبان مقاله: انگلیسی
- تعداد مشاهده: 1136
نویسندگان
Postgraduate Student ,Tehran University, Department of Civil Engineering
Professor, Tehran University, Department of Civil Engineering
چکیده
Dam interaction with foundation is important subject in analys of concrete gravity dams , so always needed to new methods for improved and examined accuracy than last methods and caused to more recognition of behavior of dams for analysing and designing . The influence of base-rock characteristics on non-linear seismic response to different earthquake input mechanims including dam-foundation interaction is investigated by using the lagrangian approach in this paper. The elasto-plastic behavior of the dam concrete is idealized. Dam and foundation rock are modeled by using 8-noded isoparametric quadrilateral solid Finite-elements. In this paper ,two different earthquake input mechanisms are used to consider the effect of base-rock characteristics in the analyses: the standard rigid-base input and the massless-foundation input models . A concrete gravity dam with results of recorded from earthquake is chosen for testing numerical model. The results obtained from non-linear analyses are campared with the results of linear analysesکلیدواژه ها
Dam-foundation interaction ; Concrete gravity dam; Lagrangian approach ; Finite elements; Earthquake input mechanismsمقالات مرتبط جدید
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