کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
286510 509485 2016 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Review of collapse triggering mechanism of collapsible soils due to wetting
ترجمه فارسی عنوان
بررسی مکانیزم تحریک فروپاشی خاک های قابل جابجایی به علت خیس شدن
کلمات کلیدی
مکانیسم سقوط ریز ساختار، روابط سازنده، خاک خرد شده خاک های طبیعی لس، مدل های الستوپلاستی، سطح عملکرد استحکام ساختاری
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی

Loess soil deposits are widely distributed in arid and semi-arid regions and constitute about 10% of land area of the world. These soils typically have a loose honeycomb-type meta-stable structure that is susceptible to a large reduction in total volume or collapse upon wetting. Collapse characteristics contribute to various problems to infrastructures that are constructed on loess soils. For this reason, collapse triggering mechanism for loess soils has been of significant interest for researchers and practitioners all over the world. This paper aims at providing a state-of-the-art review on collapse mechanism with special reference to loess soil deposits. The collapse mechanism studies are summarized under three different categories, i.e. traditional approaches, microstructure approach, and soil mechanics-based approaches. The traditional and microstructure approaches for interpreting the collapse behavior are comprehensively summarized and critically reviewed based on the experimental results from the literature. The soil mechanics-based approaches proposed based on the experimental results of both compacted soils and natural loess soils are reviewed highlighting their strengths and limitations for estimating the collapse behavior. Simpler soil mechanics-based approaches with less parameters or parameters that are easy-to-determine from conventional tests are suggested for future research to better understand the collapse behavior of natural loess soils. Such studies would be more valuable for use in conventional geotechnical engineering practice applications.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Rock Mechanics and Geotechnical Engineering - Volume 8, Issue 2, April 2016, Pages 256–274
نویسندگان
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