بررسی اثر میلگرد و خاموتهای ساخته شده از پلیمرهای مسلح شده با الیاف شیشه ای بر رفتار تیرهای بتن آرمه

نوع مقاله : مقاله پژوهشی

نویسندگان

1 واحد بین المللی کیش، دانشگاه آزاد اسلامی، جزیره کیش، ایران

2 مرکز تحقیقات سازه و زلزله، دانشگاه صنعتی امیرکبیر، تهران، ایران.

3 گروه مهندسی عمران، واحد تهران جنوب، دانشگاه آزاد اسلامی، تهران، ایران.

چکیده

در موضوع تحقیق بررسی اثر میلگرد و خاموت های ساخته شده از پلیمرهای مسلح شده با الیاف شیشه ای بر رفتار تیرهای بتن آرمه، تیر از مهمترین اعضای سازه های بتن آرمه بوده که به دلایل مختلفی، نیاز به استفاده از مواد و مصالح جدید دارد. یکی از راهکارهای افزایش مقاومت باربری تیرهای بتن آرمه، جایگزینی مصالح مصرفی با مواد جدید می باشد. میلگردهای پلیمری مسلح شده با الیاف (FRP) یکی از مصالح ساختمانی جدید می باشد که با وزنی کمتر و مقاومتی بیشتر نسبت به میلگردهای معمولی، می توانند علاوه بر کاهش هزینه های اجرایی بتن، سبب بهبود عملکرد آنها در مقابل ترکهای برشی گردد. در این مطالعه از میلگردهای FRP با الیاف شیشه (GFRP) جهت ساخت تیرهای بتنی با ابعاد مقطع 200 در 300 میلیمتر و طول 2000 میلیمتر استفاده شد. برای انجام آزمایش نیز از روش آزمایش بارگذاری چهار نقطه ای در آزمایشگاه استفاده شد. نتایج نشان داد که استفاده از خاموتهای GFRP باعث افزایش مقاومت برشی و کاهش شکلپذیری تیرهای بتنی می شود.

کلیدواژه‌ها


عنوان مقاله [English]

Investigation The Effect of Rebars and Joint Using Glass Fiber Reinforced Polymer on The Reinforced Concrete Beams

نویسندگان [English]

  • Alireza Mirzaei 1
  • Farzad Hatami 2
  • Hamid Reza Rabieefar 3
1 International Kish University, Islamic Azad University, Kish Island, Iran
2 Structure and Earthquake Research Center, Amirkabir University of Technology, Tehran, Iran.
3 Department of Civil Engineering, Islamic Azad University, South Tehran Branch, Tehran, Iran.
چکیده [English]

In this research paper about Investigation The Effect of Rebars and Joint Using Glass Fiber Reinforced Polymer (GFRP) on The Reinforced Concrete Beams, (RCB) Beams are one of the important members of reinforced concrete which needs new materials due to several reasons. One of the significant measures to improve the bearing resistance (BR) is to substitute material used with novel one. Polymer reinforced fiber Rebars(PRFR) is one of the new material that has lower weight and high resistance than conventional steel rebars can reduce the fulfillment prices as well as enhance their performance of them against shear cracks. In this study, concrete beams with the dimension 200×300 mm and a length of 2000 mm were made using the FRP rebars with glass fiber (GFRP). The results showed that the use of GFRP joints increases the shear strength and reduces the ductility of concrete beams.

Keywords: Conceret, Rebars, Joint, Reinforced concrete beams, Glass fiber reinforced polymer.

کلیدواژه‌ها [English]

  • Concrete
  • Rebars
  • Joint
  • Reinforced concrete beams
  • Glass fiber reinforced polymer
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