Strength of Concrete Filled Steel Tubes under High-Strain Rate Loading

A Split Hopkinson Pressure Bar (SHPB) equipment was used to perform the high-strain rate compressive tests on concrete filled steel tubes (CFT) under both room and elevated temperatures. This paper reports the results of load-deformation relationships, the dynamic compressive strength corresponding to different strain rates and temperatures. The results reveal the existence of a steel tube and concrete core interaction mechanism. Although the dynamic yielding strength of CFT specimens under elevated temperatures decreases somewhat with the increasing of temperature, the dynamic ultimate strength decreases little with the elevated temperature. A calculation of the dynamic compression strength for CFT columns under both room and elevated temperatures using the simple additive equations without considering confinement was attempted and shown to yield reasonable underestimation to the test results.

• Record URL:
  • https://doi.org/10.1061/41142(396)24
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784411421
• Supplemental Notes:
  • Copyright © 2011 ASCE
• Authors:
  • Xiao, Yan
  • Zheng, Qiu
  • Huo, Jingsi
  • Shan, Jianhua
  • Chen, Baisheng
• Conference:
  • The 2008 Composite Construction in Steel and Concrete Conference VI
  • Location: Tabernash CO, United States
  • Date: 2008-7-20 to 2008-7-24
• Publication Date: 2008

Language

• English

Subject/Index Terms

• TRT Terms: Bearing capacity; Compressive strength; Materials at high or low temperatures; Strain measurement; Tubing
• Uncontrolled Terms: Concrete filled steel tubes
• Subject Areas: Design; Materials;

Filing Info

• Accession Number: 01346602
• Record Type: Publication
• ISBN: 978-0-7844-1142-1
• Files: TRIS, ASCE
• Created Date: Aug 8 2011 1:57PM