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SEISMIC DESIGN OF CONNECTIONS BETWEEN STEEL OUTRIGGER BEAMS AND REINFORCED CONCRETE WALLS

by DEASON, JEREMY THOMAS

Abstract (Summary)
Cyclic response of shear connections between steel outrigger beams and reinforced concrete core walls is presented in this paper. The connections investigated in this paper consisted of a shear tab welded onto a plate that was connected to the core walls through multiple headed studs. The experimental data from six specimens point to a capacity that is larger than the design value. The mode of failure was through pullout of the embedded plate, or fracture of the weld between the studs and the plate. Such brittle modes of failure need to be avoided through proper design. A capacity design method based on dissipating the input energy through yielding of the shear tab was developed. This approach requires a good understanding of the expected capacity of headed studs under combined gravity shear and cyclic axial load (tension and compression). A model was developed and verified against test results from six specimens. A seventh specimen whose design was based on the proposed design methodology was then tested. Based on the performance of this specimen, the proposed design method is recommended for the design of outrigger beam-wall connections.
Bibliographical Information:

Advisor:

School:University of Cincinnati

School Location:USA - Ohio

Source Type:Master's Thesis

Keywords:connections seismic design concrete core outrigger beam

ISBN:

Date of Publication:01/01/2002

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