کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
304076 512773 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Physical modeling of lateral spreading induced by inclined sandy foundation in the state of zero effective stress
ترجمه فارسی عنوان
مدلسازی فیزیکی گسترش جانبی که ناشی از پایه شنی شیبدار در حالت استرس موثر صفر است
کلمات کلیدی
مدل فیزیکی، مایع سازی شن و ماسه، گسترش جانبی، صفر استرس موثر
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی


• We present a modeling approach for realizing a saturated sand in state of zero effective stress.
• Plastic sand has similar mechanical properties with quartz sand.
• In a state of zero effective stress, a relative differential movement is found between the upper and lower layer of the foundation with a steep slope and low relative density.

The state of zero effective stress is a situation at which the effective stress of saturated sand decreases to zero in the process of liquefaction. In the state of zero effective stress, sand particles suspend in water and the foundation is vulnerable to much large lateral deformation. The state of zero effective stress can be achieved through dynamic loading tests, but the obtained state is difficult to sustain a steady situation. To simulate the suspended sand in water under fully liquefied condition, plastic sand, characterized by small specific gravity, is used instead of quartz sand to build an inclined foundation. Salt water with similar density is used to pass in slowly near bottom of the foundation. As observed in tests, the plastic sand is able to suspend in sodium chloride solution (salt water) of a specific density and thus this model can be used to simulate the lateral spreading of a foundation under zero effective stress state. Lateral deformation occurs within a certain depth beneath the ground and the magnitude increases from the bottom up, showing nonlinear behaviors. This paper presents a physical modeling approach for achieving the state of zero effective stress under static laboratory condition.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soil Dynamics and Earthquake Engineering - Volume 76, September 2015, Pages 80–85
نویسندگان
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