Seismic Performance Evaluation of Intermediate Moment Frames with Reduced Beam Section and Bolted Web Connections. Issue 2 (May 2015)

• Record Type: Journal Article
• Authors: Han, Sang Whan; Moon, Ki Hoon; Hwang, Seong-Hoon; Stojadinovic, Bozidar
• Is Part Of: Earthquake spectra. Volume 31:Issue 2(2015)
• Page Start: 895
• Page End: 919
• Publication Date: 2015-05
• Subjects: Earthquake engineering -- Periodicals; Earthquake engineering; Periodicals; 624.1762
• DOI: 10.1193/022113EQS042M
• Languages: English
• ISSNs: 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 .