کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
11001245 1431679 2018 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Seismic analysis of rigid walls retaining a cross-anisotropic poroelastic soil layer over bedrock
ترجمه فارسی عنوان
تجزیه و تحلیل لرزه ای از دیواره های سفت و سخت حاوی یک لایه خاکستری متخلخل متخلخل بر روی سنگ بستر
کلمات کلیدی
پاسخ لرزه ای، حفظ دیوار سفت و سخت، خاک متخلخل متقاطع ناهمسانگردی، راه حل تحلیلی، تأثیر آنیزوتروپیک بر پاسخ،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
The dynamic response of rigid walls retaining a cross-anisotropic poroelastic soil layer over bedrock to seismic horizontal excitation is determined analytically under conditions of plane strain. The problem is treated as a special case of that of a pair of rigid walls with a large separation distance. Use is made of Biot's anisotropic poroelastodynamic theory. Assuming time harmonic excitation, one is able to achieve an exact u-p formulation of the problem in the frequency domain. Expansion of the displacements and the pore-water pressure in terms of Fourier sine and cosine series along the horizontal direction, reduces the partial differential equations of motion in the frequency domain into a system of three ordinary differential equations, which can be easily solved analytically. Thus, closed form expressions for the seismic soil pressure, the distance from the base of the point of application of the resultant seismic pressure and the base shear force and bending moment are obtained. From the above cross-anisotropic poroelastic solution its special cases of isotropic poroelastic solution and cross-anisotropic elastic solution are obtained and compared with the corresponding existing analytical solutions for validation purposes. Finally, parametric studies are performed in order to assess the effect of cross-anisotropy on the seismic response of the wall-soil system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soil Dynamics and Earthquake Engineering - Volume 114, November 2018, Pages 615-624
نویسندگان
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