Behavior of Unbonded, Post-Tensioned, Precast Concrete Connections with Different Percentages of Mild Steel Reinforcement

This paper presents results of tests performed on posttensioned, precast concrete moment-resisting, beam-column connections containing various mild steel reinforcement contents. In the experimental program, 5 hybrid connections were tested under displacement-controlled reversed cyclic loading. The main variable was the mild steel's percentage of contribution to the flexural capacity of the connection, ranging from 0-65% of the connection's moment capacity. Each hybrid connection was compared with test result of the reference monolithic subassembly in terms of connection strength, stiffness degradation, energy dissipation, and permanent displacement. The aim of this paper was to determine the effect of mild steel reinforcement content on behavior and performance of posttensioned, precast concrete hybrid connections. Response of posttensioned, precast concrete hybrid connections approached that of monolithic subassemblies as the mild steel reinforcement content increased. Connection capacities were well predicted by the joint gap-opening approach. Design assumptions of hybrid connections are best satisfied with 30% mild steel reinforcement to the connection's flexural capacity.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/12789822
• Authors:
  • Ozden, Sevket
  • Ertas, Onur
• Publication Date: 2007-3

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Photos; References; Tables;
• Pagination: pp 32-44
• Serial:
  • PCI Journal
  • Volume: 52
  • Issue Number: 2
  • Publisher: Precast/Prestressed Concrete Institute
  • ISSN: 0887-9672
  • Serial URL: http://www.pci.org

Subject/Index Terms

• TRT Terms: Moments (Mechanics); Posttensioning; Precast concrete; Reinforced concrete; Reinforcement (Engineering); Resisting moments; Structural connection
• Uncontrolled Terms: Beam columns; Unbonded connections
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01046660
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 10 2007 10:20PM