کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6772131 | 512774 | 2015 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On the influence of a non-cohesive fines content on small strain stiffness, modulus degradation and damping of quartz sand
ترجمه فارسی عنوان
بر اثر تأثیر یک غلظت غیر انسانی در سختی کوچک کوچک، تخریب مدول و کاهش شن و ماسه کوارتز
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کلمات کلیدی
سفتی کم فشار، تخریب مدول، نسبت دمیدن، شن کوارتز، محکومیت تست ستون رزونانس،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
The influence of a non-cohesive fines content on small-strain shear modulus Gmax, small-strain constrained elastic modulus Mmax, shear modulus degradation G(γ)/Gmax, damping ratio D(γ) and threshold shear strain amplitudes γtl and γtv has been studied in approx. 130 resonant column (RC) tests with additional P-wave measurements by means of piezoelectric elements. Specially mixed continuous grain size distribution curves of a quartz sand with varying fines contents (0â¤FCâ¤20%, defined as the mass percentage of grains with size d<0.063mm according to DIN standard code) and uniformity coefficients (1.5â¤Cuâ¤50) have been tested at different relative densities and pressures. A significant decrease of Gmax and Mmax with increasing fines content was observed, while the modulus degradation curves G(γ)/Gmax were found rather independent of FC. A pressure-dependent decrease of the damping ratio and a slight increase of the threshold shear strain amplitudes γtl and γtv with fines content were measured. Extensions of several empirical equations for Gmax, Mmax, G(γ)/Gmax and D(γ) considering the influence of the fines content are proposed in the paper.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soil Dynamics and Earthquake Engineering - Volume 69, February 2015, Pages 103-114
Journal: Soil Dynamics and Earthquake Engineering - Volume 69, February 2015, Pages 103-114
نویسندگان
T. Wichtmann, M.A. Navarrete Hernández, T. Triantafyllidis,