Seismic performance evaluation of intermediate moment frames with reduced beam section and bolted web connections
- Authors
- Han, Sang Whan; Moon, Ki Hoon; Hwang, Seong-Hoon; Stojadinovic, Bozidar
- Issue Date
- May-2015
- Publisher
- SAGE Publications
- Citation
- Earthquake Spectra, v.31, no.2, pp.895 - 919
- Journal Title
- Earthquake Spectra
- Volume
- 31
- Number
- 2
- Start Page
- 895
- End Page
- 919
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/20410
- DOI
- 10.1193/022113EQS042M
- ISSN
- 8755-2930
- Abstract
- 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.
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