کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4676276 1347747 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental research on the compressive fracture toughness of wing fracture of frozen soil
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم زمین و سیاره ای (عمومی)
پیش نمایش صفحه اول مقاله
Experimental research on the compressive fracture toughness of wing fracture of frozen soil
چکیده انگلیسی

It is commonly found that not only bending fracture but also compressive fracture occur frequently in compression, furthermore, in some specific conditions, compressive fracture sometimes has dominant effect on frozen soil. Therefore, it is extremely necessary to study the mechanical characteristics of the compressive fracture of frozen soil and to investigate the damage and fracture mechanism of frozen soil based on the previous research on frozen soil damage in compression. This study draws on the ideas and methods used in compression fracture research on ice that is very similar to frozen soil, and specific clay in Shenyang region was adopted as the experimental material, to make compressive specimens containing tilted wing crack of different angles, and uniaxial unconfined compression fracture experiments were conducted at different temperatures and loading rates. The fracture toughness KIC and KIIC of the main crack tip of the specimens are calculated with obtained experimental results and the law of KIC and KIIC changing with tilted angles, temperatures and loading rate is obtained to gain an insight to damage mechanism of frozen soil in compression. This paper presents a meaningful attempt for the research on compressive fracture of frozen soil, so as to better solve practical engineering problems.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cold Regions Science and Technology - Volume 65, Issue 3, March 2011, Pages 421–428
نویسندگان
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