NEHRP Clearinghouse

Title
Studies in Steel Moment Resisting Beam-to-Column Connections for Seismic-Resistant Design.
File
PB96143243.pdf
Author(s)
Blackman, B.; Popov, E. P.
Source
National Science Foundation, Arlington, VA.; American Inst. of Steel Construction, Chicago, IL., October 1995, 158 p.
Identifying Number(s)
UCB/EERC-95/11
Abstract
Prior to the January 17, 1994 Northridge Earthquake, special moment resisting framed buildings constructed of steel were considered the best in seismic-resistant design. After the earthquake, however, brittle failures were discused in over 150 buildings, many which were designed and constructed according to contemporary standards. As a result, the report explores the primary reasons for such unexpected failures and attempts to provide methods of economically improving the performance of new connections. First, a historical chapter presents background information regardign the development of earthquake-resistant design standards in building codes as well as the evolution of moment resisting beam-to-column connections used in areas of high seismicity in the United States. Three contemporary, full-scale subassemblages are examined to determine the underlying causes of poor performance during the Northridge Earthquake.
Keywords
; Earthquake resistance; Load distribution; Building codes; Earthquake engineering; Failure (Mechanics); Loads (Forces); Seismic design; Welds; Joints (Junctions); Brittleness; Structural steels; Failure analysis; Seismic effects; Structural members; Structural response; Columns (Supports); Beams (Structural); Dynamic structural analysis