مقاله انگلیسی رایگان در مورد ارزیابی آسیب وارد شده به ستون فولادی توسط کمانش موضعی – اسپرینگر ۲۰۱۸

مقاله انگلیسی رایگان در مورد ارزیابی آسیب وارد شده به ستون فولادی توسط کمانش موضعی – اسپرینگر ۲۰۱۸

 

مشخصات مقاله
انتشار مقاله سال ۲۰۱۸
تعداد صفحات مقاله انگلیسی ۸ صفحه
هزینه دانلود مقاله انگلیسی رایگان میباشد.
منتشر شده در نشریه اسپرینگر
نوع مقاله ISI
عنوان انگلیسی مقاله Method for Evaluating Damage Caused to Steel Columns by Local Buckling
ترجمه عنوان مقاله روش ارزیابی آسیب وارد شده به ستون های فولادی توسط کمانش موضعی
فرمت مقاله انگلیسی  PDF
رشته های مرتبط مهندسی عمران
گرایش های مرتبط سازه
مجله مجله مهندسی عمران – KSCE Journal of Civil Engineering
دانشگاه Dept. of Civil Engineering at Chonnam National University – Korea
کلمات کلیدی شاخص آسیب، استرس محلی، کشش محلی، فشار پلاستیک تحت بارگذاری مکرر
کلمات کلیدی انگلیسی damage index, local stress, local strain, plastic strain under repeated loading
کد محصول E6700
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بخشی از متن مقاله:
۱٫ Introduction

Studies on enhancing the strength and usability of steel members for high-rise buildings and long-span bridges have been conducted (Xiong and Liew, 2015; Khan et al., 2015; Mikkola et al., 2015). Furthermore, numerous experiments and numerical analyses of the damage assessment of steel columns, beams, bracings, and other structural members under repeated loading such as an earthquake load have been conducted (Nguyen et al., 2015; Park, 1993; Gao and Usami, 2000). Owing to the emergence of ultrahigh-strength steels, structural steel shapes are a very important design parameter considering the local buckling, and buckling expressions according to the structural steel shapes and load conditions have been proposed (Seif and Schafer, 2010). In addition, a trilinear kinematic hardening model was proposed to simulate the behavior of ultrahigh-strength steel columns with an H-section under cyclic loading (Wang et al., 2015; Chen et al., 2016). A steel member that has a low slenderness ratio is less affected by additional flexure owing to the axial force, and lateral buckling is caused by local buckling. Therefore, the local buckling of plate elements is the major reason for failure. According to an experimental study by Park (1993), a steel member accumulates damage during repeated loading, and local buckling leads to buckling of the entire member (Park, 1993). As a very large amount of plastic deformation repetitively occurs in the steel member, the steel member will eventually fracture. It was found that a steel member element can fail when such a large amount of plastic deformation occurs in a steel member element damaged by local buckling, even when the number of repeated loading cycles is low. In this study, a damage index is developed to quantitatively comprehend the degree of damage due to a large amount of plastic deformation under the repeated loading of steel members. By using this damage index, a method for analyzing the damage to box-type steel members is developed.

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