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ارائه رویکردهایی جدید در بررسی طول عمر و رفتار رشد ترک در روسازیهای آسفالتی به روش مکانیک شکست | ||
| مهندسی زیر ساخت های حمل و نقل | ||
| مقاله 4، دوره 11، شماره 2 - شماره پیاپی 42، تیر 1404، صفحه 65-84 اصل مقاله (2.49 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22075/jtie.2025.36692.1713 | ||
| نویسندگان | ||
| حسن زیاری1؛ ندا کامبوزیا* 2؛ محمدرضا خاکباز3؛ محمدرضا محمدعلیها4 | ||
| 1استاد، گروه راه و ترابری، دانشگاه علم و صنعت ایران، تهران، ایران. | ||
| 2استادیار، گروه راه و ترابری، دانشکده عمران، دانشگاه علم و صنعت ایران، تهران. | ||
| 3دانشجوی دکتری راه و ترابری، دانشکده مهندسی عمران، دانشگاه علم و صنعت ایران، تهران، ایران. | ||
| 4دانشیار، دانشکده مهندسی صنایع، دانشگاه علم و صنعت ایران، تهران، ایران. | ||
| تاریخ دریافت: 04 بهمن 1403، تاریخ بازنگری: 22 فروردین 1404، تاریخ پذیرش: 07 خرداد 1404 | ||
| چکیده | ||
| با افزایش ناوگان حملونقل جادهای، روسازیهای آسفالتی با طول عمر بالاتر، اهمیت ویژهای دارند. در این راستا، در سالهای اخیر، علم مکانیک شکست به روند تحقیقات مهندسی روسازی کمکهای فراوانی کرده است. با تحقیقات صورت گرفته در این تحقیق، دو نمونه SCB و ENDB به عنوان نمونههای برتر برای انجام آزمایشهای مکانیک شکست در مودهای مختلف خالص و ترکیبی شناخته شدهاند. ضمن اینکه تعیین چقرمگی شکست، مهمترین نکته در شناخت وضعیت و تخمین طول عمر و معیارهای رفتاری روسازیهای آسفالتی محسوب میگردد. اما اکثر تحقیقات موجود، تنها به بررسی چقرمگی شکست نمونههای آسفالتی با هندسههای مختلف و الیاف و افزودنیهای مختلف و همچنین، تأثیرات اندازه نمونهها در چقرمگی شکست پرداخته است. نتایج مطالعات نشان میدهد که عدم توجه به پارامترهای غیرتکین تنش در مدلهای کلاسیک، تا ۳۰ درصد خطا در پیشبینی عمر روسازی ایجاد میکند. از این رو، بهکارگیری رویکردهای پیشرفتهتری مانند GMTS که اثرات این پارامترها را لحاظ میکنند، ضروری است. تحقیقات آینده میتواند با بهبود طراحی و پیشبینی عملکرد روسازیها، به کاهش هزینههای نگهداری و افزایش پایداری و کارایی زیرساختهای جادهای کمک کند. | ||
| کلیدواژهها | ||
| روسازی آسفالتی؛ مکانیک شکست؛ چقرمگی شکست؛ هندسه مکانیک شکست | ||
| عنوان مقاله [English] | ||
| Presenting New Approaches for Investigating the Lifespan and Crack Growth Behavior in Asphalt Pavements Using Fracture Mechanics | ||
| نویسندگان [English] | ||
| Hasan Ziari1؛ Neda Kamboozia2؛ Mohammad Reza Khakbaz3؛ Mohammad Reza Mohammad Aliha4 | ||
| 1Professor, school of Highway and Transportation Engineering, Iran University of Science and Technology, Tehran, I. R. Iran. | ||
| 2Assistant Professor, school of Highway and Transportation Engineering, Iran University of Science and Technology, Tehran, I. R. Iran. | ||
| 3PhD Student in Highway and Transportation Engineering, Faculty of Civil Engineering, Iran University of Science and Technology, Tehran, I. R. Iran. | ||
| 4Associate Professor, school of Industrial Engineering, Iran University of Science and Technology, Tehran, I. R. Iran. | ||
| چکیده [English] | ||
| With the increase in the road transportation fleet, asphalt pavements with longer lifespans have gained significant importance. In this regard, in recent years, the science of fracture mechanics has greatly contributed to the research process in pavement engineering. Based on studies in the technical literature, the SCB and ENDB specimens have been recognized as the top samples for conducting fracture mechanics tests under various pure and mixed-mode conditions. Furthermore, determining fracture toughness is considered the most critical aspect in understanding the condition and estimating the lifespan and behavioral criteria of asphalt pavements. However, most existing research has only focused on investigating the fracture toughness of asphalt specimens with different geometries, fibers, and additives, as well as the effects of specimen size on fracture toughness. Studies have shown that neglecting non-singular stress parameters in classical models can lead to up to 30% error in predicting pavement lifespan. Therefore, employing more advanced approaches such as GMTS, which account for these parameters, is essential. Future research can contribute to reducing maintenance costs and enhancing the durability and efficiency of road infrastructure by improving pavement design and performance prediction. | ||
| کلیدواژهها [English] | ||
| Asphalt pavement, Fracture Mechanics, Fracture Toughness, Fracture mechanics geometry | ||
| مراجع | ||
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