Flexural Test for Steel-Concrete Composite Members Using Prefabricated Steel Angles
Publication: Journal of Structural Engineering
Volume 140, Issue 4
Abstract
In the proposed composite [prefabricated steel-reinforced concrete (PSRC)] column, steel angles located at the corners of the cross section are weld connected with tie bars to provide a bond for the steel angles, shear resistance, and lateral confinement. In this paper, simply supported PSRC specimens were tested to investigate their flexural strength and ductility. For comparison, a conventional concrete-encased H-section specimen was also tested. The test parameters were the steel ratio of the angle section and the spacing of the tie bars. The flexural, shear, and bond strengths of the test specimens correlated well with predictions. The flexural strength and stiffness of the PSRC specimens were significantly greater than those of the conventional composite specimen with the same steel area. However, at large inelastic deformations, the PSRC specimens were vulnerable to the bond failure between the steel angle and concrete and the tensile fracture of the angle at the weld-connection to the tie bars. When the bond strength between the steel angles and concrete was greater than the demand, the PSRC specimens exhibited ductile behavior after flexural yielding.
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Acknowledgments
This research was financially supported by grants from the R&D Policy Infra Program (Code 11-Technology Standardization-09-01) funded by the Ministry of Land, Transportation and Maritime Affairs of Korea, and the Small and Medium Business Administration in Korea (No. 00045821), and Integrated Research Institute of Construction and Environmental Engineering Seoul National University research Program funded by Ministry of Education & Human Resources Development. The authors are grateful to the authorities for their support.
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Information
Published In
Journal of Structural Engineering
Volume 140 • Issue 4 • April 2014
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Jan 12, 2013
Accepted: Jun 18, 2013
Published online: Jun 20, 2013
Published in print: Apr 1, 2014
Discussion open until: May 4, 2014
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