Abstract
Based on a limited number of experiments, current practice is to use fully welded link-column connections for links in eccentrically braced frames. Since the use of field welded connections has its limitations, the use of bolted connections may be an attractive alternative. The extended and plate connection was selected for testing in link-column joint applications in eccentrically braced frames. The objective of this study is to evaluate the performance of bolted connections between the link and the column in eccentrically braced frames. The study is experimental in nature and involves the testing of bolted end plate connection under severe cyclic loading. The cyclic load is used to model the severe load reversals associated with a major seismic event. The effect of bolt size, end plate thickness and the use of end plate stiffeners on the performance of the joint was evaluated. Properly designed extended end plate connections showed ductile performance. Links with extended end plate connections developed ultimate forces and reached deformation angles comparable to those with fully welded connections. Guidelines for designing bolted extended end plate connections for link-column joints are proposed.
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