کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4927373 | 1431702 | 2016 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Reprint of Liquefaction assessments at shallow foundation building sites in the Central Business District of Christchurch, New Zealand
ترجمه فارسی عنوان
بازنگری ارزیابی مایع در ساختمان های بنیادی کم عمق در منطقه مرکزی کسب و کار کریستوچر، نیوزیلند
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کلمات کلیدی
تاریخچه مورد، تست های سیکلی سه تایی، تبدیل به مایع، عملکرد زمین لرزه مهندسی، محل سکونت،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
The 2010-2011 Canterbury earthquake sequence provides an exceptional opportunity to investigate the effects of varying degrees of liquefaction on the built environment. Significant ground settlements and building damage in the Central Business District (CBD) were observed for the Christchurch earthquake. The results of CPTs and soil index tests from exploratory borings performed in the CBD are combined with cyclic triaxial (CTX) test results to characterize the soil deposits at several buildings sites. Conventional one-dimensional liquefaction-induced ground settlement procedures do not capture shear-induced deformation mechanisms and the effects of ground loss due to sediment ejecta. Improved procedures are required. Nonlinear effective stress analyses using robust soil constitutive models calibrated through CTX tests provide a means for developing these procedures. The CTX tests estimate generally consistent cyclic resistances as the CPT-based methods for medium dense sands and silty sands; however, the CTX tests provide useful insights regarding pore water pressure response and strain development. Correlations and CTX tests performed on loose clean sands indicate that these specimens were disturbed by the sampling process. Interim findings from this ongoing study are presented, and preliminary recommendations for evaluating the seismic performance of buildings with shallow foundations at sites with liquefiable soils are provided.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soil Dynamics and Earthquake Engineering - Volume 91, December 2016, Pages 234-245
Journal: Soil Dynamics and Earthquake Engineering - Volume 91, December 2016, Pages 234-245
نویسندگان
Jonathan D. Bray, Christopher S. Markham, Misko Cubrinovski,