Seismic Response of Composite Moment-Resisting Connections. II: Behavior

Jerome F. Hajjar, Roberto T. Leon, Michael A. Gustafson, Carol K Shield

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

Abstract

This two-part paper presents research to determine the effect of structural phenomena, especially the presence of composite concrete floor slabs, on the behavior of the type of fully-restrained, steel momentresisting frame connections that failed, primarily near the bottom girder flanges, during the 1994 Northridge, California, earthquake. In a companion paper, the results of three experiments, including one bare steel specimen and two with composite floor slabs, are outlined, along with corroborating analyses. In this paper, the structural phenomena that affected the behavior of these connections are documented. The results indicate that the strains near the bottom flange of the specimens with a slab are several times larger than those near the top flange, and that strain concentrations and a triaxial state of tensile stress precipitate failure in these connection topologies. These results help to explain the predominance of bottom flange failures, and they indicate that the potentially high strain levels leading to fracture and the inherently unsymmetrical topology of composite steel frame connections should be considered in the development of connection design provisions.

Original languageEnglish (US)
Pages (from-to)877-885
Number of pages9
JournalJournal of Structural Engineering
Volume124
Issue number8
DOIs
StatePublished - Jan 1 1998

Fingerprint Dive into the research topics of 'Seismic Response of Composite Moment-Resisting Connections. II: Behavior'. Together they form a unique fingerprint.

Cite this