شکست ورقه بتن آرمه تحت بارگذاری ضربه ای
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شکست ورقه بتن آرمه تحت بارگذاری ضربه ای

عنوان فارسی مقاله: مدل تحلیلی شکست ورقه بتن آرمه تحت بارگذاری ضربه ای
عنوان انگلیسی مقاله: Failure analytical model of reinforced concrete slab under impact loading
مجله/کنفرانس: ساخت و ساز و مصالح ساختمانی - Construction and Building Materials
رشته های تحصیلی مرتبط: مهندسی عمران
گرایش های تحصیلی مرتبط: سازه، مدیریت ساخت، زلزله
کلمات کلیدی فارسی: بتن آرمه، حفره زنی، روش انرژی، مشخصات شکست
کلمات کلیدی انگلیسی: Reinforced concrete، Perforation، Energy method، Failure characteristic
نوع نگارش مقاله: مقاله پژوهشی (Research Article)
نمایه: Scopus - Master Journals List - JCR
شناسه دیجیتال (DOI): https://doi.org/10.1016/j.conbuildmat.2019.07.008
دانشگاه: State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
ناشر: الزویر - Elsevier
نوع ارائه مقاله: ژورنال
نوع مقاله: ISI
سال انتشار مقاله: 2019
ایمپکت فاکتور: 4/686 در سال 2018
شاخص H_index: 129 در سال 2019
شاخص SJR: 1/522 در سال 2018
شناسه ISSN: 0950-0618
شاخص Quartile (چارک): Q1 در سال 2018
فرمت مقاله انگلیسی: PDF
تعداد صفحات مقاله انگلیسی: 13
وضعیت ترجمه: ترجمه نشده است
قیمت مقاله انگلیسی: رایگان
آیا این مقاله بیس است: خیر
آیا این مقاله مدل مفهومی دارد: ندارد
آیا این مقاله پرسشنامه دارد: ندارد
آیا این مقاله متغیر دارد: ندارد
کد محصول: E12526
رفرنس: دارای رفرنس در داخل متن و انتهای مقاله
فهرست انگلیسی مطالب

Abstract


1- Introduction


2- Analytical model


3- Experiments of projectile perforation of thick concrete and reinforced concretes slabs


4- Results and discussions


5- Conclusion


References

نمونه متن انگلیسی مقاله

Abstract


A failure analytical model was developed to assess the characteristics of reinforced concrete slabs under oblique perforation by a rigid projectile in three stages: initial cratering, tunneling and shear plugging. The energy dissipation for the initial cratering and tunneling was obtained by integrating the axial resistance force along the penetration direction, and for shear plugging using a new method considering the reinforcement. Analytical expressions for the failure characteristics of reinforced concrete slabs were obtained using energy methods. Projectile perforation experiments were conducted for thick concrete and reinforced concretes slabs and the damage size was measured. The theoretical predictions closely agreed with the experimental results and a parametric analysis of the slab failure characteristics were also discussed.


Introduction


Concrete and reinforced concrete have been widely used in various defense and civil engineering fields for anti-impact protection of structures, such as bridges, dams, and nuclear power plants, against high dynamic impact loading [1–3]. Hence, understanding the failure characteristics of a reinforced concrete slab under such impact loading is crucial [4,5]. For example, several concrete fragments that will cause serious secondary damage to the facilities inside the protective structure will be generated on the rear face of a reinforced concrete slab when a high-speed projectile perforates it [6–9]. Therefore, research into projectile penetration or perforation of high-value buildings and structures has been receiving considerable attention. Extensive experimental research on projectile penetration and perforation of a concrete slab has been conducted over the last century, and several penetration and perforation empirical formulas have been obtained [10,11], such as the widely used Petry, ACE, Barr (UKAEA), and NDRC formulas. Although many experiments have been concerned with the penetration of reinforced concrete slabs, the effect of reinforcing bars has been incorporated only in some formulas, such as the Petry, Barr (UKAEA), and Boswell formulas [12].

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