تحلیل یقین‌اندیشانه مقاومت و شکل‌پذیری ستون‌های ساخته شده از بتن پرمقاومت

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استاد، دانشکده مهندسی عمران، دانشگاه فردوسی مشهد

2 دانشجوی کارشناسی ارشد، دانشکده مهندسی عمران، دانشگاه فردوسی مشهد

چکیده

بررسی رفتار تنش-کرنش بتن‌های با مقاومت بالا که توسط فولادهای جانبی محصور شده‌اند توسط پژوهشگران مختلفی بطور گسترده مورد توجه بوده است. در نتیجه روابط تنش-کرنش متعددی در مورد ستون‌های با بتن با مقاومت بالا ارائه شده است. از آن‌جائیکه هر مدل بر پایه تعداد محدودی از داده‌های آزمایشگاهی هر پژوهشگر پیشنهاد شده، غالباً هر مدل‌ نسبت به داده‌های آزمایشگاهی که براساس آن ارائه شده تخمین مناسبی داشته و در مورد سایر داده‌ها پیش‌بینی واقع‌بینانه ارائه نمی‌کند. در این تحقیق تمامی مدل‌ها و داده‌های آزمایشگاهی قابل دسترس که توسط پژوهشگران در زمینه بررسی مقاومت و شکل‌پذیری ستون‌های با بتن با مقاومت بالا ارائه و انجام شده است جمع‌آوری شده و براساس نتایج این پژوهش‌ها و از طریق بکاربستن علم تحقیق در عملیات مدلی مناسب پیشنهاد شد. همچنین با استفاده از تحلیل یقین‌اندیشانه نشان داده شد که مدل پیشنهادی در مقایسه با سایر مدل‌ها مطابقت بسیار خوبی با نتایج آزمایشگاهی دارد.

کلیدواژه‌ها

عنوان مقاله [English]

Deterministic analysis of strength and ductility of high-strength concrete columns

نویسندگان [English]

  • Mohammadreza Esfahani 1
  • seyed mohammad saberizadeh 2
1 Professor, Department of Civil Engineering, Ferdowsi University, Mashhad, Iran
2 M.Sc Student, Department of Civil Engineering, Ferdowsi University, Mashhad, Iran
چکیده [English]

The study of stress-strain behavior of high strength concrete confined by transverse reinforcement has been widely considered by various researchers. As a result, various stress-strain relationships regarding columns made of high strength concrete have been presented. Since each suggested model is based on a limited number of experimental data of a researcher, it has often a good prediction on its experimental results but not on other data. In this study, all available models and experimental data presented by other researchers in the field of strength and ductility of columns made of high strength concrete have been collected. Based on the results of these studies and applying Operations Research(OR), an appropriate model is suggested. It is shown that the proposed model in comparison with other models has a very good agreement with experimental results, by using deterministic analysis.

کلیدواژه‌ها [English]

  • high strength concrete
  • Ductility
  • Confined Concrete
  • concrete column
  • deterministic analysis

مراجع

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