Seismic performance of weak-beam-type steel low-to-middle-rise moment-resisting frame determined by local buckling of square hollow section columns

Article Engineering, Civil

Proposed nonlinear macro-model for seismic risk assessment of composite-steel moment resisting frames

Hammad El Jisr et al.

Summary: This paper proposes a macro-model for simulating the hysteretic behavior of composite-steel beams in fully restrained beam-to-column connections in composite-steel moment-resisting frames. The model captures the asymmetric hysteretic response and the slip demands in beam-slab connections. Evaluation of European composite-steel MRF buildings shows low collapse probability and minimal damage for frequently occurring seismic events.

EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS (2022)

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Article Engineering, Civil

Effect of column strength deterioration on the performance of steel moment-resisting frames subjected to multiple strong ground motions

Randy Tenderan et al.

Summary: This study evaluates the effect of column strength deterioration caused by local buckling on the seismic performance of steel moment-resisting frames. The numerical analysis results show that strong ground motions may lead to the occurrence of weak story mechanism and weak story collapse. The study also investigates the collapse fragility of the structure under multiple excitations.

ENGINEERING STRUCTURES (2022)

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Article Engineering, Civil

Seismic collapse safety based optimization of steel Moment-Resisting frames

Saeed Gholizadeh et al.

Summary: This study proposes an efficient methodology for designing cost-efficient multi-story special steel moment-resisting frames at predefined levels of seismic collapse safety. By integrating seismic collapse safety assessment technique with performance-based design optimization, the study demonstrates significant increase in seismic collapse capacity with a 25% increase in the optimal weight of the structures.

STRUCTURES (2022)

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Article Engineering, Civil

Experimental and numerical tests of cold-formed square and rectangular hollow columns

Arash Poursadrollah et al.

Summary: This paper summarizes the investigation on the buckling response of cold-formed square and rectangular hollow columns through experimental tests and finite element simulations. The results show that the calculated buckling resistance using EN1993-1-1 is in good agreement with the tested buckling resistances of different columns. The average partial safety factor for flexural buckling in cold-formed square and rectangular hollow columns is determined to be 0.92.

ENGINEERING STRUCTURES (2022)

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Article Engineering, Civil

Seismic collapse performance of steel special moment frames designed using different analysis methods

Taeo Kim et al.

Summary: The study focused on designing steel structures of different heights using two popular elastic analysis methods. It was found that the collapse probability of structures can vary depending on the analysis methods used for design. An improved method was proposed to enhance the seismic collapse performance of SMFs.

EARTHQUAKE SPECTRA (2021)

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Article Engineering, Mechanical

Collapse performance assessment of steel moment frames designed to Eurocode 8

L. Macedo et al.

Summary: This study evaluated the safety margins against collapse of steel moment-resisting frame buildings designed according to Eurocode 8 under maximum considered earthquake ground motions. The results indicated that these buildings have acceptable safety margins against collapse.

ENGINEERING FAILURE ANALYSIS (2021)

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Article Construction & Building Technology