کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6771007 | 1431689 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Modeling added spatial variability due to soil improvement: Coupling FEM with binary random fields for seismic risk analysis
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کلمات کلیدی
SSIFree-fieldVs30γcPHVGEMLMSMDSPHAIntensity measures - اقدامات شدیدfundamental frequency - بسامد پایه، فرکانس پایهSoil improvement - بهبود خاکTransfer function - تابع انتقالSoil-structure interaction - تعامل ساختار خاکSpatial variability - تنوع فضاییDamping - دمیدنFinite element model - روش اجزاء محدود یا روش المان محدود Earthquake - زلزله، زمین لرزهShear wave velocity - سرعت موج برشیArias intensity - شدت آریاسexcess pore pressure - فشار منفی اضافیHomogenization - همگن سازی یا هموژناسیون FEM - پنج
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Historical evidence as well as physical and numerical modeling indicate that improved sites present less liquefaction and ground deformation. In most cases this improvement is modeled as homogeneous; however, in-situ measurements evidence the high level of heterogeneity in the deposit. Inherent spatial variability in the soil and the application of some soil improvement techniques such as biogrouting and Bentonite permeations will necessary introduce heterogeneity in the soil deposit shown as clusters of the treated material in the natural soil. Hence, in this study, improvement zones are regarded as a two-phase mixture that will present a nonlinear relation due to the level of complexity of seismic liquefaction and the consequent settlement in a structure. This relation is greatly affected by the mechanical behavior of the soils used and the input motion. The effect on the latter can be efficiently related to the equivalent wave period as the proposed homogenization model depends on the stiffness demand of the input motion.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soil Dynamics and Earthquake Engineering - Volume 104, January 2018, Pages 174-185
Journal: Soil Dynamics and Earthquake Engineering - Volume 104, January 2018, Pages 174-185
نویسندگان
Silvana Montoya-Noguera, Fernando Lopez-Caballero,