کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
284186 509131 2016 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Self-centering eccentrically braced frames using shape memory alloy bolts and post-tensioned tendons
ترجمه فارسی عنوان
فریم های محور مرکزی خودسنجی با استفاده از پیچ و مهره های آلی شکل و تاندون های پس از تنش
کلمات کلیدی
خودمحور سازه های مقاوم در برابر لرزه، شکل آلیاژ حافظه، شبه الاستیسیته، اتلاف انرژی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی


• A new concept of self-centering EBFs using shape memory alloy bolts and post-tensioned tendons is proposed.
• An analytical model is developed to predict the cyclic load behavior of the self-centering system.
• The analytical model is verified by finite element based numerical simulations.
• The self-centering EBF exhibits a robust self-centering capability even without post-tensioned tendons.

Conventional eccentrically braced frames dissipate seismic energy through plastic deformation of link beams. However, large residual deformation after strong earthquakes often makes the damaged structure necessary for costly repair. This paper proposes a self-centering eccentrically braced frame system which incorporates shape memory alloy bolts and post-tensioned high strength steel tendons to provide a self-centering response behavior with moderate energy dissipation. An analytical model which has taken into account the super-elastic constitutive of shape memory alloys and the changing contact condition at the link-beam interface is formulated to predict the cyclic load behavior of the system. The feasibility of the proposed concept is demonstrated by cyclic load analysis of a prototype self-centering eccentrically braced frame. Finite element simulations are carried out to verify the analytical model and to further investigate the effects of the configuration details of the link-to-beam connection to the cyclic performance of the self-centering EBF system.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Constructional Steel Research - Volume 125, October 2016, Pages 190–204
نویسندگان
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