scholarly journals Seismic Performance Evaluation According to Rotation Capacity of Connections for Intermediate Steel Moment Frames - II. Cause Evaluation and Alternative

2014 ◽  
Vol 18 (2) ◽  
pp. 105-115 ◽  
Author(s):  
Ki Hoon Moon ◽  
Sang Whan Han ◽  
Seung Jin Ha
2002 ◽  
Vol 128 (4) ◽  
pp. 534-545 ◽  
Author(s):  
Seung-Yul Yun ◽  
Ronald O. Hamburger ◽  
C. Allin Cornell ◽  
Douglas A. Foutch

2018 ◽  
Vol 34 (1) ◽  
pp. 55-76 ◽  
Author(s):  
Sang Whan Han ◽  
Tae O Kim ◽  
Seong Jin Baek

Steel ordinary moment frames (OMF) are seismic force-resisting systems that can be used in buildings. In current seismic design and detailing provisions, such as the American Society of Civil Engineers ASCE/SEI 7-10 (2010) , American Institute of Steel Construction ANSI/AISC 341-10 (2010), and ANSI/AISC 358-10 (2010) , less stringent design and detailing requirements are specified for steel OMFs compared with those for steel special- and intermediate-moment frames. The strong-column weak-beam (SC/WB) requirement is not enforced for steel OMF connections. In the present study, the seismic performance evaluation is conducted for steel OMFs designed according to current seismic design and detailing provisions considering different combinations of gravity, seismic, and wind loads, as well as wind drift limits. Based on the results of seismic performance evaluation, permissible structural heights for steel OMFs are also proposed.


2015 ◽  
Vol 31 (2) ◽  
pp. 895-919 ◽  
Author(s):  
Sang Whan Han ◽  
Ki Hoon Moon ◽  
Seong-Hoon Hwang ◽  
Bozidar Stojadinovic

A reduced beam section with a bolted web (RBS-B) connection is permitted for use only in intermediate moment frames (IMF) according to the ANSI/AISC 358-05. This is because some RBS-B test specimens failed to achieve 4% total rotation capacity, which is the minimum story drift angle required for special moment frames (SMF). Several studies reported that some RBS-B connections could experience brittle connection fracture during earthquakes, which can also be detrimental to the seismic performance of IMF systems with RBS-B connections. For investigating whether IMFs with RBS-B connections provide a satisfactory seismic performance, this study evaluated the seismic performance of IMFs with pre-qualified RBS-B connections following the ATC-63 procedure. Twenty-four model buildings were designed according to current seismic design provisions. Several IMFs with RBS-B connections do not satisfy the acceptance criteria specified in ATC-63.


Author(s):  
Bulent Akbas ◽  
Bilge Doran ◽  
Ali Bozer ◽  
Onur Seker ◽  
Mahmoud Faytarouni ◽  
...  

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