Seismic collapse performance of special moment steel frames with torsional irregularities

2017 ◽  
Vol 141 ◽  
pp. 482-494 ◽  
Author(s):  
Sang Whan Han ◽  
Tae-O Kim ◽  
Dong Hwi Kim ◽  
Seong-Jin Baek
Keyword(s):  
Steel Frames ◽  
Seismic Collapse

Comparison of steel frames with RWS and WFP beam-to-column connections through seismic fragility analysis

2020 ◽  
pp. 136943322097728
Author(s):  
Haoran Yu ◽  
Weibin Li
Keyword(s):  
Limit State ◽  
Pushover Analysis ◽  
Steel Frames ◽  
Fragility Analysis ◽  
Structural Safety ◽  
Seismic Fragility ◽  
Fe Modelling ◽  
Collapse Resistance ◽  
Seismic Collapse ◽  
Probabilistic Seismic Demand

Reduced web section (RWS) connections and welded flange plate (WFP) connections can both effectively improve the seismic performance of a structure by moving plastic hinges to a predetermined location away from the column face. In this paper, two kinds of steel frames—with RWS connections and WFP connections—as well as different frames with welded unreinforced flange connections were studied through seismic fragility analysis. The numerical simulation was conducted by using multiscale FE modelling. Based on the incremental dynamic analysis and pushover analysis methods, probabilistic seismic demand analysis and seismic capability analysis were carried out, respectively. Finally, combined with the above analysis results, probabilistic seismic fragility analysis was conducted on the frame models. The results showed that the RWS connection and WFP connection (without double plates) have little influence on reducing the maximum inter-storey drift ratio under earthquake action. RWS connections slightly reduce the seismic capability in non-collapse stages and improve the seismic collapse resistance of a structure, which exhibits good structural ductility. WFP connections can comprehensively improve the seismic capability of a structure, but the seismic collapse resistance is worse than that of RWS connections when the structure has a large number of storeys. The frame with WFP connections has a lower failure probability at every seismic limit state, while the frame with RWS connections sacrifices some of its structural safety in non-collapse stages to reduce the collapse probability.

Seismic collapse probability of eccentrically braced steel frames

2017 ◽  
Vol 24 (1) ◽  
pp. 37-52
Author(s):  
Yongsheng Qi ◽  
Weiqing Li ◽  
Ningning Feng
Keyword(s):  
Steel Frames ◽  
Collapse Probability ◽  
Seismic Collapse

scholarly journals Thin-Walled CFST Columns for Enhancing Seismic Collapse Performance of High-Rise Steel Frames

2017 ◽  
Vol 7 (1) ◽  
pp. 53 ◽  
Author(s):  
Yongtao Bai ◽  
Jiantao Wang ◽  
Yashuang Liu ◽  
Xuchuan Lin
Keyword(s):  
Steel Frames ◽  
High Rise ◽  
Seismic Collapse ◽  
Thin Walled ◽  
Cfst Columns

Seismic collapse assessment of K-shaped bracings in cold-formed steel frames

Structures ◽  
2020 ◽  
Vol 25 ◽  
pp. 256-267
Author(s):  
Hossein Tajmir Riahi ◽  
Mehran Zeynalian ◽  
Amin Rabiei ◽  
Ehsan Ferdosi
Keyword(s):  
Steel Frames ◽  
Seismic Collapse ◽  
Cold Formed Steel ◽  
Collapse Assessment

Discrete optimization of semi-rigid steel frames in second-order analysis

2019 ◽  
Author(s):  
Marcos Henrique Bossardi Borges ◽  
Adelano Esposito ◽  
Herbert Gomes
Keyword(s):  
Discrete Optimization ◽  
Steel Frames ◽  
Second Order ◽  
Order Analysis

EXPERIMENTAL INVESTIGATION ON WAIST-INDUCED SWAY COLLAPSE OF STEEL FRAMES

1982 ◽  
Vol 315 (0) ◽  
pp. 48-60
Author(s):  
Tsuneyoshi NAKAMURA ◽  
Osamu OHTA ◽  
Koji UETANI
Keyword(s):  
Experimental Investigation ◽  
Steel Frames
Sign in / Sign up

Export Citation Format

Share Document