پژوهشنامه حمل و نقل

پژوهشنامه حمل و نقل

تحلیل پایداری خاکریزهای مسلح شده با ژئوسل

نوع مقاله : مقاله پژوهشی

نویسندگان
1 دانشیار، دانشکده مهندسی عمران، دانشگاه تربیت دبیر شهید رجایی، تهران، ایران
2 دانش‌آموخته کارشناسی ارشد، دانشکده مهندسی عمران، دانشگاه تربیت دبیر شهید رجایی، تهران، ایران
چکیده
استفاده از مسلح کننده های مختلف در پایداری و تثبیت بستر، زیرسازی و شیب‌های خاکی کاربرد فراوانی دارد که در این بین استفاده از ژئوسل به دلیل ماهیت سه بعدی سلول‌های آن مورد استقبال محققان بسیاری قرار گرفته است. اکثر روش‌های فعلی در طراحی خاک مسلح، خاکریز را به صورت دوبعدی تحلیل می‌کنند که این موضوع در مدلسازی المان ژئوسل که یک المان سه بعدی است، ناکارآمد می‌باشد. در این مقاله با مدلسازی سه‌بعدی، رفتار و پاسخ استاتیکی و دینامیکی خاکریز مسلح شده با ژئوسل با هندسه‌های مختلف خاکریز و همچنین چیدمان‌های متفاوت مسلح کننده مورد بررسی قرار می‌گیرد. برای این منظور از نرم‌افزار المان محدود پلکسیس سه‌بعدی استفاده شده است. نتایج این مطالعه نشان می‌دهد هندسه دیوار شامل ارتفاع و زاویه اجرای خاکریز و همچنین چیدمان سلول‌های ژئوسل در ارتفاع خاکریز و طول نفوذ مسلح‌کننده برتغییرمکان جانبی و ضریب اطمینان پایداری خاکریز اثرگذار هستند پاسخ دینامیکی خاکریز متاثر از آنها می‌باشد که باید در تحلیل و طراحی این دسته از دیوارها حائز اهمیت است.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Stabilization Analysis of Geocell Reinforced Embankments

نویسندگان English

Saeed Ghaffarpour Jahromi 1
Iman Bagheri 2
1 Associate Professor, Faculty of Civil Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran.
2 M.Sc., Grad., Faculty of Civil Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran.
چکیده English

Various geosynthetics reinforcements used to stability of soil slopes and geocells due to the three-dimensional nature of cells proposed by many researchers. Most current researches of reinforced soil analyze are two dimensions, which is inefficient for modeling the 3D geocell element. In this paper, the static and dynamic response of reinforced soil studied by three-dimensional modeling.For this purpose, Plaxis-3D finite element software has been used to modeling with different geometric characteristics. The results of this study show that t
Various geosynthetics reinforcements used to stability of soil slopes and geocells due to the three-dimensional nature of cells proposed by many researchers. Most current researches of reinforced soil analyze are two dimensions, which is inefficient for modeling the 3D geocell element. In this paper, the static and dynamic response of reinforced soil studied by three-dimensional modeling.For this purpose, Plaxis-3D finite element software has been used to modeling with different geometric characteristics. The results of this study show that the geometry of the wall including the height and angle of the embankment as well as the arrangement of geocell cells at different level (height) and the length of the penetration affect the lateral displacement and the embankment stability coefficient.
he geometry of the wall including the height and angle of the embankment as well as the arrangement of geocell cells at different level (height) and the length of the penetration affect the lateral displacement and the embankment stability coefficient.

کلیدواژه‌ها English

Reinforced Soil
Geocell
Stability
Dynamic Load
Embankment
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