کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
9951906 1432151 2018 13 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
Incorporating spatial variability of pavement foundation layers stiffness in reliability-based mechanistic-empirical pavement performance prediction
ترجمه فارسی عنوان
شامل تنوع فضایی سختی لایه پایه پیاده رو در پیش بینی عملکرد روانکاری مکانیکی-تجربی مبتنی بر قابلیت اطمینان
کلمات کلیدی
عملکرد پیاده رو مکانیسم-تجربی، سطح خطر / قابلیت اطمینان، آمار فضایی، تراکم هوشمند عنصر محدود تصادفی،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
Adequate pavement quality and performance are critical for road users' safety, ride comfort, vehicle operation and travel delay costs, and vehicle durability. An accurate and robust pavement design is essential for realistic life cycle cost analysis, as well as overall management of the infrastructure. Compared to deterministic design methods, probabilistic methods are more realistic and can capture the inherent uncertainty in pavement and foundation materials; and loading conditions. In this study, spatial variability and systematic measurement errors in foundation layers' (including the base and subgrade layers) stiffness are incorporated in reliability-based mechanistic-empirical (ME) pavement performance models. Geospatial models are used to characterize both, the spatial variability and systematic measurement errors. To predict the long term pavement performance, the geospatial models were used to construct stochastic finite element (FE) models, which were then used to predict the performance based on the mechanistic-empirical pavement design guide equations (MEPDG). It is found that the typical covariance functions, also known as semivariograms or variograms, should be handled carefully when used in probabilistic performance modeling. Separating the inherent spatial variability from other uncertainties is necessary for performing risk and reliability analysis. Moreover, incorporating the inherent spatial variability in the stochastic FE models can alter the location of the critical response as described in the MEPDG.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transportation Geotechnics - Volume 17, Part A, 1 December 2018, Pages 1-13
نویسندگان
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