رفتار خمشی تیرهای فولادی
ترجمه نشده

رفتار خمشی تیرهای فولادی

عنوان فارسی مقاله: رفتار خمشی تیرهای فولادی با عملکرد بالا پوسیده
عنوان انگلیسی مقاله: Flexural behavior of corroded HPS beams
مجله/کنفرانس: سازه های مهندسی – Engineering Structures
رشته های تحصیلی مرتبط: مهندسی عمران
گرایش های تحصیلی مرتبط: سازه
کلمات کلیدی فارسی: فولاد با عملکرد بالا، رفتار خمشی، فناوری اسکن سه بعدی، پوسیدگی تصادفی، مدل تحلیلی
کلمات کلیدی انگلیسی: High performance steel (HPS)، Flexural behavior، ۳D scanning technology، Random corrosion، Analytical model
نوع نگارش مقاله: مقاله پژوهشی (Research Article)
نمایه: Scopus – Master Journals List – JCR
شناسه دیجیتال (DOI): https://doi.org/10.1016/j.engstruct.2019.06.006
دانشگاه: School of Civil Engineering, Changsha University of Science and Technology, Changsha, Hunan 410114, China
ناشر: الزویر - Elsevier
نوع ارائه مقاله: ژورنال
نوع مقاله: ISI
سال انتشار مقاله: 2019
ایمپکت فاکتور: 3.604 در سال 2018
شاخص H_index: 114 در سال 2019
شاخص SJR: 1.628 در سال 2018
شناسه ISSN: 0141-0296
شاخص Quartile (چارک): Q1 در سال 2018
فرمت مقاله انگلیسی: PDF
تعداد صفحات مقاله انگلیسی: 14
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: E12429
رفرنس: دارای رفرنس در داخل متن و انتهای مقاله
فهرست انگلیسی مطالب

Abstract


1. Introduction


2. Experimental program


3. Test results and discussion


4. Prediction of flexural strength


5. Conclusions


Declaration of Competing Interest


Acknowledgements


References

نمونه متن انگلیسی مقاله

Abstract


Experimental research is conducted to investigate the flexural behavior of corroded High Performance Steel (HPS) beams. Four beams with various corrosion damage are designed and subjected to electrochemical accelerated corrosion process. 3D scanning technology is employed to analyze the geometric features affected by the corrosion damage. Flexural tests are carried out, and the impact of corrosion on the flexural response is discussed. Considering the randomness of corrosion pits in each area, predictive models are proposed for the flexural strength of corroded beams with an idealized elastic-plastic and linear-hardening constitutive relationship model. An analysis comparing the proposed models with Chinese and American codes is made. Results show that increasing the corrosion damage leads to a decrease of discreteness in the residual sectional area and causes a transformation in the compressed flange from noncompact to slender. A corrosion loss less than 10% leads to slight deterioration of both strength and stiffness degradation, while further corrosion damage results in a significant decrease. The depth and length of the buckling wavelength for corroded beams decreases gradually as the corrosion damage become more serious. The analytical models IEM and LHM or the GB50017-2017 may be suitable for predicting the lower and upper limit values of the ultimate flexural moment, respectively, and results predicted by AISC are conservative.


Introduction


High performance steel (HPS) is considered to have higher strength, better ductility, and a lower thickness effect than ordinary steel and many significant applications have been carried out because of the exceptional properties of HPS, such as the Minato Ohashi Bridge [1], the Millau Bridge [2], and National Stadium (Bird’s Nest) [3]. Extensive research has been conducted to investigate the mechanical properties of HPS on the basis of material tests [4,5]. Some efforts [6–۸] on flexural ductility and buckling behavior have also been carried out. Felkel et al. [9] conducted monotonic and cyclic tests and computer simulations of HPS 70W girders. Barth et al. [10] evaluated the application of a simplified moment redistribution to hybrid HPS 485W bridge girders in negative flexural region. The above studies of the intact specimen are significant for the HPS application of new structures. Additionally, HPS has various definitions in different countries according to the excellent properties adopted, and this paper focuses on high strength steel. Corrosion is a common deterioration cause in engineering structures, especially for steel members exposed to a wet and salt spray environment [11,12]. For example, it is reported that 15% of the highway steel bridges replacements and some 50% of the railway bridges replacements in Japan were caused by corrosion [13].

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