scholarly journals Seismic performance factors for moment frames with steel-concrete composite columns and steel beams

2016 ◽  
Vol 45 (10) ◽  
pp. 1685-1703 ◽  
Author(s):  
Mark D. Denavit ◽  
Jerome F. Hajjar ◽  
Tiziano Perea ◽  
Roberto T. Leon
Keyword(s):  
Seismic Performance ◽  
Steel Beams ◽  
Moment Frames ◽  
Composite Columns ◽  
Performance Factors

A FEMA P695 Study for the Proposed Seismic Performance Factors for Cold-Formed Steel Special Bolted Moment Frames

2013 ◽  
Vol 29 (1) ◽  
pp. 259-282 ◽  
Author(s):  
Atsushi Sato ◽  
Chia-Ming Uang
Keyword(s):  
Seismic Performance ◽  
Moment Frames ◽  
Acceptance Criteria ◽  
Performance Factors ◽  
Gravity Load ◽  
Cold Formed Steel

The objective of this study was to verify the adequacy of the proposed Seismic Performance Factors for the newly developed Cold-Formed Steel Special Bolted Moment Frames in the AISI S110 Seismic Standard. The FEMA P695 methodology, Qualification of Building Seismic Performance Factors, was used for this purpose. A total of 13 archetype designs, representing two seismicity and two gravity load levels, were designed and analyzed. The computed results from all individual archetypes and four performance groups showed that the proposed seismic performance factors met the acceptance criteria and could provide a sufficient margin against collapse under the maximum considered earthquake.

scholarly journals Seismic performance assessment of conventional steel and steel-concrete composite moment frames using CFST columns

2018 ◽  
Author(s):  
Antonio Silva ◽  
Yadong Jiang ◽  
Luis Macedo ◽  
Jose Miguel Castro ◽  
Ricardo Monteiro
Keyword(s):  
Seismic Performance ◽  
Steel Beams ◽  
Eurocode 8 ◽  
Lateral Stiffness ◽  
Moment Frames ◽  
Conventional Steel ◽  
Moment Resisting Frames ◽  
Moment Resisting ◽  
Cfst Columns ◽  
Steel Mrf

The research reported in this paper focuses on the assessment of the seismic performance of conventional steel moment-resisting frames (MRFs) and steel-concrete composite moment-resisting frames employing circular Concrete-Filled Steel Tube (CFST) columns. Two comparable archetypes (i.e. one steel MRF, with steel columns and steel beams; and one composite MRF, with circular CFST columns and steel beams) are designed, and used as the basis for comparison between the seismic performance associated with each typology. Both structures are designed against earthquake loads following the recommendations of Eurocode 8. The comparison of the obtained design solutions allows concluding that the amount of steel associated with the main structural members is higher for the steel-only archetype, even though the composite MRF has the higher level of lateral stiffness. This aspect is particularly relevant when one considers that a minimum level of lateral stiffness (associated with the P-Δ inter-storey drift sensitivity coefficient, θ), is imposed by the European code, which may ultimately govern the design process. The two case-studies are then numerically modelled in OpenSees, and their seismic performance is assessed through fragility assessment for a number of relevant limit states, and, finally, earthquake-induced loss estimation. In general, the results obtained clearly indicate that the composite MRF with circular CFST columns exhibits better seismic performance than the equivalent steel-only archetype. This is noticeably shown in the comparison of the fragility curves associated with the collapse limit state, which tend to show substantially higher probabilities of exceedance, at similar levels of 1st-mode spectral acceleration, for the steel-only case. Furthermore, seismic losses at several seismic intensity levels of interest tend to be higher for the steel MRF.

A Framework for the Quantification of Non-Structural Seismic Performance Factors

2022 ◽  
pp. 1-27
Author(s):  
Daniele Perrone ◽  
Derek Rodriguez ◽  
Andre Filiatrault ◽  
Emanuele Brunesi ◽  
Clemens Beiter ◽  
...  
Keyword(s):  
Seismic Performance ◽  
Performance Factors

Strength and Seismic Performance Factors of Posttensioned Masonry Walls

2015 ◽  
Vol 141 (11) ◽  
pp. 04015038 ◽  
Author(s):  
Reza Hassanli ◽  
Mohamed A. ElGawady ◽  
Julie E. Mills
Keyword(s):  
Seismic Performance ◽  
Masonry Walls ◽  
Performance Factors
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