مطالعۀ آزمایشگاهی و عددی پایداری شیب ماسه‌ای با استفاده از ستون سنگی مسلح با ورقه‌های افقی ژئوتکستایل

مهندسی عمران فردوسی

مقاله 4، دوره 32، شماره 1 - شماره پیاپی 25، فروردین 1398، صفحه 55-72   

نوع مقاله: پژوهشی

شناسه دیجیتال (DOI): 10.22067/civil.v32i1.62412

نویسندگان

محمد حاجی عزیزی^* ؛ مسعود نصیری

دانشگاه رازی

چکیده

هدف از انجام این پژوهش، مطالعۀ آزمایشگاهیِ بررسی عملکرد ستون‌ سنگی معمولی و ستون سنگی مسلح با ورقه‌های افقی ژئوتکستایل در پایدارسازی شیب‌‌های خاکی ماسه‌ای می‌باشد. مدل شیب ماسه‌ای پس ‌از ساخت از طریق بارش اشباع شده و با نصب ستون سنگی معمولی و ستون سنگی مسلح با ورقه‌های افقی ژئوتکستایل درون آن، مسلح شده ‌است و در نهایت تاج شیب بارگذاری شده ‌است. نتایج به ‌دست ‌آمده با استفاده از روش تفاضل محدود سه‌بعدی (FLAC3D) نیز مورد تأیید قرار گرفته‌اند. نتایجِ مدل‌سازی‌های آزمایشگاهی و تحلیل‌های عددی، نشان داده‌اند که ستون سنگی مسلح با ژئوتکستایل در وسط شیب ماسه‌ای تأثیر چشم‌گیری در افزایش پایداری شیروانی مسلح دارد؛ به‌طوری ‌که ستون سنگی مسلح مقاومت برشی شیب ماسه‌ای را 5/1 برابر نسبت ‌به ستون سنگی معولی افزایش می‌دهد.

کلیدواژه‌ها

شیب ماسه‌ای؛ پایدارسازی؛ ستون سنگی؛ ورقه افقی ژئوتکستایل

سایر فایل های مرتبط با مقاله

4-Hajiazizi-Nasiri - Revised.pdf

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