کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
284673 509156 2014 18 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Seismic performance of dual-steel moment resisting frames
ترجمه فارسی عنوان
عملکرد لرزه ای از جنبه های مقاوم در برابر لحیم دو فولاد
کلمات کلیدی
لحیم فولاد مقاوم در برابر فریم، فولاد با مقاومت بالا قاب فولادی دو طرفه، طراحی مبتنی بر عملکرد لرزشی، تجزیه و تحلیل غیر خطی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی


• The performance of dual-steel concept in MRFs has been investigated.
• The design of dual steel MRF is effective to provide overall ductile mechanism.
• The influence of the design parameters on seismic response has been discussed.
• Characterization of the behavior factors at each limit states has been carried out.
• The economic efficiency of dual-steel MRFs has been evaluated.

In seismic design of steel structures, the “dual-steel” concept concerns the combined use of High Strength Steel (HSS) in non-dissipative members and Mild Carbon Steel (MCS) in dissipative zones, in order to control the global frame behavior into a ductile overall failure mode. In this paper, a comprehensive parametric study devoted to investigate the seismic design and performance of Eurocode 8 compliant dual-steel Moment-Resisting Frames (MRF) is presented and discussed. The overall seismic performance has been analysed through static and dynamic nonlinear analyses against three limit states: damage limitation (DL), severe damage (SL) and near collapse (NC). The investigated parameters cover both geometric and mechanical variables, as the type columns, span length, number of storeys and spectral shape. The analyses showed that the use of HSS in Eurocode 8 compliant MRFs is effective to provide overall ductile mechanism, but it may lead to inefficient and uneconomical structures characterized by limited plastic demand due to the large design overstrength. The comparison between dual steel MRFs with those entirely made of MCS showed that: i) in order to fulfil the codified drift requirements and to limit the stability coefficients, the same shapes for members should be used for both structures in the most of cases; ii) a similar performance can be recognized in both dual steel and single grade steel structures under both damage limitation and significant damage limit state; and iii) dual steel frames guarantee a better control of plastic mechanism than single grade steel frames at near collapse limit state.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Constructional Steel Research - Volume 101, October 2014, Pages 437–454
نویسندگان
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