کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
286683 509501 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the role of topographic amplification in seismic slope instabilities
ترجمه فارسی عنوان
در نقش تقویت توپوگرافی در ناپایداری شیب لرزه
کلمات کلیدی
جابجایی شیب، موج سطح مدل سازی عددی، تست جدول تکان دادن، تقویت توپوگرافی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی

Surface wave generation due to body wave propagation near ground surface has been discussed in the literature. This phenomenon, typically occurring in topographic changing areas, along with its interaction with body waves (SV), decreases precision of formulas for evaluation of slope displacement. This significant fact caused the researchers not only to investigate the combined surface and SV waves motion pattern, but also to consider its effect on structures built on the slopes. In order to reveal the phenomenon, several finite element numerical studies have been performed by ABAQUS programme. Besides, two physical model slopes simulating the landslide occurrence have been constructed and tested by shaking table device. The results of induced and calculated accelerations obtained by two approaches have been compared and Rayleigh wave generation has been proved. Furthermore, the slope displacements have been calculated by various empirical methods and the results were compared with numerical ones. The results proved that in order to increase the precision of empirical formulas for displacement prediction, surface wave effect should be taken into account. Finally, a concept of “effective depth of surficial amplification” is introduced and its effect on dynamic slope stability is analysed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Rock Mechanics and Geotechnical Engineering - Volume 7, Issue 2, April 2015, Pages 163–170
نویسندگان
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