کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
305202 512867 2007 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the influence of the polarization and the shape of the strain loop on strain accumulation in sand under high-cyclic loading
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
پیش نمایش صفحه اول مقاله
On the influence of the polarization and the shape of the strain loop on strain accumulation in sand under high-cyclic loading
چکیده انگلیسی

This paper presents results of cyclic triaxial (CT) tests on sand with a simultaneous variation of the axial and the lateral stresses. Furthermore, a cyclic multidimensional simple shear (CMDSS) device and corresponding test results are discussed. For in-phase cycles with a constant strain amplitude it is demonstrated that the accumulation rate is independent of the polarization of the cycles in the strain space. Polarization changes lead to a temporary increase of the accumulation rate: they increase the effectiveness of compaction. For out-of-phase (e.g. elliptical) cycles the shape of the strain loop significantly influences the residual strain. A circular strain loop generates twice larger accumulation rates than a one-dimensional strain loop with identical span. The accumulation rate is not influenced by the circulation of the strain loop. It is shown that the direction of accumulation (so-called “cyclic flow rule”) is only moderately affected by the polarization and the shape of the cycles.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soil Dynamics and Earthquake Engineering - Volume 27, Issue 1, January 2007, Pages 14–28
نویسندگان
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