کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6772741 512792 2013 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Two-dimensional imaging of soil-bedrock interface by short-array beamforming technique
ترجمه فارسی عنوان
تصویربرداری دو بعدی از رابط کاربری خاک خاکی با تکنیک پرتوهای کوتاه آرایه
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
The depth to soil-bedrock interface, which is one of the major parameters in the site response analysis, has been often investigated by surface-wave tests. The round-robin tests for a surface-wave method in Korea revealed that a long measurement array in surface-wave tests is not appropriate in locating soil-bedrock interface. In this paper, for the improved profiling of depth to soil-bedrock interface in 2-D image, short measurement array was introduced for the beamforming technique, which is a robust array processing technique adopted in a long-array format for stiffness profiling. Numerical simulation and field applications of the short-array beamforming technique indicate that the method is valid even for surface wave propagation with mode-related complexity. Depth to soil-bedrock interface and shear-wave velocity profiles determined by the short-array beamforming technique were in good agreement with layer stratifications of boring logs, resistivity map, shear-wave velocity profiles of downhole tests and CAP-SASW tests.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soil Dynamics and Earthquake Engineering - Volume 53, October 2013, Pages 37-48
نویسندگان
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