Dynamic centrifuge tests of structures with shallow foundations on soft clay reinforced by soil-cement grids
(چکیده مقاله) :
Abstract :
Centrifuge model tests are used to examine the dynamic response of structures supported by shallow foundations on soft clay reinforced
by soil-cement grids. The centrifuge models involved a deep, lightly over-consolidated clay profile with three different soil-cement
grid configurations. Structures on square shallow foundations were located over the central part of each soil-cement grid system. The
models were subjected to multiple shaking events with peak base accelerations ranging from 0.006 to 0.546 g. The recorded responses
of the structures and reinforced soil profiles were used to define the dynamic moment-rotation-settlement responses of the shallow foundations
across the range of imposed shaking intensities. While the soil-cement grids were effective at controlling foundation settlements in
most cases, the more significant foundation settlements which developed for the weakest soil-cement grid configuration under the stronger
shaking intensities produced a rocking response of the structure and caused extensive crushing of the soil-cement below the edges of
the shallow foundations. Analysis methods for predicting the demands imposed on the soil-cement grids by the inertial loads from the
overlying structures and the kinematic loading from the soil profile’s dynamic response are evaluated for consistency with the observed
damage patterns. The experimental data have been archived and provide a basis for future studies to evaluate numerical and design analysis
methods.
by soil-cement grids. The centrifuge models involved a deep, lightly over-consolidated clay profile with three different soil-cement
grid configurations. Structures on square shallow foundations were located over the central part of each soil-cement grid system. The
models were subjected to multiple shaking events with peak base accelerations ranging from 0.006 to 0.546 g. The recorded responses
of the structures and reinforced soil profiles were used to define the dynamic moment-rotation-settlement responses of the shallow foundations
across the range of imposed shaking intensities. While the soil-cement grids were effective at controlling foundation settlements in
most cases, the more significant foundation settlements which developed for the weakest soil-cement grid configuration under the stronger
shaking intensities produced a rocking response of the structure and caused extensive crushing of the soil-cement below the edges of
the shallow foundations. Analysis methods for predicting the demands imposed on the soil-cement grids by the inertial loads from the
overlying structures and the kinematic loading from the soil profile’s dynamic response are evaluated for consistency with the observed
damage patterns. The experimental data have been archived and provide a basis for future studies to evaluate numerical and design analysis
methods.
(توضیحات تکمیلی) :
(توضیحات تکمیلی) :
Description :
مقاله ISI انگلیسی اصلی
سال انتشار:2017
فایل ISI انگلیسی اصلی ، با فرمت Pdf
تعداد صفحات فایل ISI انگلیسی اصلی: 13 صفحه
سال انتشار:2017
فایل ISI انگلیسی اصلی ، با فرمت Pdf
تعداد صفحات فایل ISI انگلیسی اصلی: 13 صفحه
Authors / Descriptions(نویسندگان/توضیحات): مقاله ISI سال انتشار2017 \ Mohammad Khosravi a,⇑, Ross W. Boulanger a, Daniel W. Wilson b, C. Guney Olgun c, Shuji Tamura d, Yongzhi Wang
Sent date(تاریخ ارسال) :
1397/10/20 | 1/10/2019
Number of visits(تعداد بازدید):
776
Key words (کلمات کلیدی):
Soil-cement grid reinforcement; Dynamic response; Single degree of freedom system; Rocking foundation; Dynamic kinematic loads; Inertial loads (IGC: E08/E01/E12/E14)
Number of pages(تعداد صفحات) :
13
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