کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4920345 | 1429089 | 2017 | 17 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Subassemblage tests and numerical analyses of buckling-restrained braces under pre-compression
ترجمه فارسی عنوان
تست های غربالگری و تجزیه و تحلیل عددی باند های محکم بسته بندی شده تحت پیش فشرده سازی
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کلمات کلیدی
پرانتز محاصره شده، پیش فشرده سازی، تست های زیرمجموعه، تجزیه و تحلیل عددی، تقویت استرس، فاکتور تعدیل فشرده سازی،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
Pre-compression loads are conducted in BRBs if the installation of frames and BRBs are performed simultaneously. In this paper, the load-carrying and energy-dissipating behavior of BRBs under pre-compression are investigated by subassemblage tests and additional finite element (FE) analyses. A total of five specimens were tested, in which two specimens were tested by cyclic pure compression loads and three specimens were tested by hysteresis loads; four of them maintained stable load-carrying behavior during loading process. The load-carrying and energy-dissipating behavior of the specimens were satisfactorily simulated using a refined FE model with a combined isotropic and kinematic hardening rule of the core material, and the compression strength adjustment factor and the stress enhancement coefficient were well predicted by the FE analytical results with a relative error less than 3.0%. The FE analytical results of BRBs with different pre-compression strains are presented, indicating that the pre-compression in a BRB would aggravate the stress enhancement of the core material in both tension and compression, yet it would hardly influence the value of the compression strength adjustment factor.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 138, 1 May 2017, Pages 473-489
Journal: Engineering Structures - Volume 138, 1 May 2017, Pages 473-489
نویسندگان
Yan-Lin Guo, Jing-Zhong Tong, Xiao-An Wang, Bo-Hao Zhang,