کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
308931 513572 2014 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Seismic performance and collapse prevention of concrete-filled thin-walled steel tubular arches
ترجمه فارسی عنوان
عملکرد لرزه ای و جلوگیری از فروپاشی آرک های لوله ای فولادی نازک دیواره ای بتن
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی


• We investigated the seismic behaviour of concrete-filled steel tubular (CFST) arches.
• We obtained the failure mechanism and failure modes of CFST arches under strong ground motions.
• A CFST arch undergoes global dynamic instability when subjected to a ground motion scaled to increasing intensity levels.
• A lower bound equation is proposed for the prediction of dynamic strength of CFST arches.

The primary objective of this paper is to investigate the seismic behaviour of concrete-filled steel tubular (CFST) arches using incremental dynamic analysis (IDA). A nonlinear elastic–plastic finite element model is developed using OpenSees software and is verified with a shaking table test. Single-record IDA studies indicate that a CFST arch undergoes global dynamic instability when subjected to ground motions of increasing intensity levels. During this process, either dynamic elastic buckling or dynamic elastic–plastic buckling may occur. Dynamic strength, which is defined as the capacity for preventing global dynamic instabilities of CFST arches, is determined with a series of multi-record IDA calculations. A lower bound equation that takes into account the effect of slenderness ratio, axial compression ratio, and included angle is proposed for the prediction of the dynamic strength of CFST arches.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin-Walled Structures - Volume 80, July 2014, Pages 91–102
نویسندگان
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