Title:
Tests on Half-Scale, Two-Story, Two-Bay, Moment-Resisting Hybrid Concrete Frames
Author(s):
Weichen Xue and Xinlei Yang
Publication:
Structural Journal
Volume:
106
Issue:
5
Appears on pages(s):
627-635
Keywords:
cyclic loading; ductility; energy dissipation; hybrid concrete frame; restoring force model; stiffness degradation
DOI:
10.14359/51663103
Date:
9/1/2009
Abstract:
The hybrid concrete frames investigated in this paper consisted of composite concrete beams (composite beams) and cast-in-place (CIP) concrete columns. Two, two-story, two-bay, hybrid concrete frames were tested under cyclic and monotonic loading, respectively. Behavior of the specimen was evaluated in terms of failure pattern, failure mechanism, stiffness degradation, energy dissipation, and displacement ductility. Test results revealed that both specimens exhibited a mixed sidesway mechanism and exhibited full and stable hysteresis loops. The maximum loadcarrying capacity under cyclic loading was approximately equal to that under monotonic loading. Both specimens behaved in a ductile manner, and the displacement ductility under monotonic loading was approximately 10% larger than the corresponding value under cyclic loading. A four-linear restoring force model was developed through analysis of the test results.