نوع مقاله : پژوهشی
نویسندگان
1 پردیس دانشکده های فنی، دانشکده ی مهندسی عمران - دانشگاه تهران
2 پردیس دانشکده های فنی، دانشکده مهندسی عمران - دانشگاه تهران
3 دانشکده اسلو و مؤسسه ژئوتکنیک NGI
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
The seismic behavior of asphaltic concrete core dams under earthquake loads has been studied. In order to evaluate the dynamic behavior of asphalt concrete, an extensive series of monotonic and cyclic tests were carried out on triaxial specimens. The MTS-dynamic equipment at the Norwegian Geotechnical Institute (NGI) was used for this purpose. Temperature and frequency effects on specimen behavior and sample degradation have been studied under cyclic loads. To investigate fatigue behavior, thousands of cyclic loads were imposed to some specimens. The tests were accomplished under both isotropic and anisotropic conditions. To study any sign of material degradation due to cyclic loading, the post-cyclic monotonic stress-strain curve was compared to the corresponding curve for specimens not first subject to cyclic loading. The determination of geotechnical parameters to be used in numerical models has also been studied.
کلیدواژهها [English]
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