یک سیستم مهاری جدید و موثر برای افزایش ظرفیت خمشی تیرهای RC
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یک سیستم مهاری جدید و موثر برای افزایش ظرفیت خمشی تیرهای RC

عنوان فارسی مقاله: یک سیستم مهاری جدید و موثر برای افزایش ظرفیت خمشی تیرهای RC تقویت شده با کامپوزیت های FRCM
عنوان انگلیسی مقاله: A novel and effective anchorage system for enhancing the flexural capacity of RC beams strengthened with FRCM composites
مجله/کنفرانس: سازه های کامپوزیتی - Composite Structures
رشته های تحصیلی مرتبط: مهندسی عمران
گرایش های تحصیلی مرتبط: مدیریت ساخت، سازه
کلمات کلیدی فارسی: مهاری، U-wrapped PBO anchorage، میله شیشه ای، تقویت FRCM، رفتار خمشی
کلمات کلیدی انگلیسی: Anchorage، U-wrapped PBO anchorage، Glass spike، FRCM strengthening، Flexural behavior
نوع نگارش مقاله: مقاله پژوهشی (Research Article)
نمایه: Scopus - Master Journal List - JCR
شناسه دیجیتال (DOI): https://doi.org/10.1016/j.compstruct.2018.10.110
دانشگاه: Al-Nahrain University, Baghdad, Iraq
ناشر: الزویر - Elsevier
نوع ارائه مقاله: ژورنال
نوع مقاله: ISI
سال انتشار مقاله: 2019
ایمپکت فاکتور: 4/345 در سال 2017
شاخص H_index: 115 در سال 2019
شاخص SJR: 1/905 در سال 2017
شناسه ISSN: 0263-8223
شاخص Quartile (چارک): Q1 در سال 2017
فرمت مقاله انگلیسی: PDF
تعداد صفحات مقاله انگلیسی: 30
وضعیت ترجمه: ترجمه نشده است
قیمت مقاله انگلیسی: رایگان
آیا این مقاله بیس است: خیر
کد محصول: E11154
فهرست انگلیسی مطالب

Abstract


1- Introduction and background


2- Research significance


3- Experimental work


4- Test set-up and instrumentation


5- Experimental results


6- Conclusions


References

نمونه متن انگلیسی مقاله

Abstract


Previous experimental studies revealed that anchorage systems were able to increase the efficiency of fiber reinforced polymers (FRP) in terms of the flexure or shear enhancements and ductility performance of the structural members. This study was conducted to investigate the suitability and effectiveness of two anchorage systems for enhancing the bond performance of fiber reinforced cementitious matrix composite (FRCM), a more recent strengthening technique using a cementitious-based binding system. In the interest of improving its flexural performance, two anchorage systems were examined here: a glass spike anchor and a novel U-wrapped anchor. The novel U-wrapped anchor is a PBO strip where its’ ends had only the fabrics in the longitudinal direction that gathered and anchored into the concrete using epoxy adhesive agent. The idea behind anchoring the ends of the U-wrapped PBO strip into RC beams was to rely on the high tensile strength of the PBO strip to control the premature debonding of the FRCM composite. Real-scale simply supported RC beams were examined under the effect of strengthening with different reinforcement ratios and with and without anchorage systems engagement. Test results revealed the contribution of anchorage systems in preventing or delaying the FRCM debonding failure mechanism and enhancing the flexural performance of strengthened beams.


Introduction


and Background Different types of anchorage systems have been used to delay the premature debonding failure mode associated with FRP composites. The successful anchorage systems have allowed the FRP’s composite materials to continuously carry a load in shear or flexure in which extra benefits from high-strength fabrics were achieved. Thus, proper anchorage systems can reduce the required cross-sectional area of the expensive fabric materials or provide a better structural performance with respect to increasing in the fabrics reinforcement ratio. Some of the important anchor types are mechanical anchorages, U-wrapped sheets, anchor spikes, and FRP rods. Many experimental studies have illustrated the efficiency and applicability of these anchorage systems. Khalifa et al. [1] invented a novel anchor that was used to reduce the stress concentration of FRP systems at the ends. The novel anchor consisted of FRP sheets that were extended through a groove filled with epoxy that may or may not include an FRP rebar. Khalifa et al. [1] stated that “the u-anchor system provides an effective solution for cases in which the bonded length of FRP composites is not sufficient to develop its full capacity.’’ Wu and Huang [2] and You et al.

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