Research on Axial Compression Ratio Limits of HSC Columns Confined with High-strength Stirrups(PDF)
《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]
- Issue:
- 2015年02期
- Page:
- 71-76
- Research Field:
- Publishing date:
Info
- Title:
- Research on Axial Compression Ratio Limits of HSC Columns Confined with High-strength Stirrups
- Author(s):
- YANG Kun; MENG He; ZHAO Jun-hai; SHI Qing-xuan
- School of Civil Engineering, Chang’an University
- Keywords:
- highstrength concrete; high-strength stirrup; axial compression ratio limit; lateral low cyclic loading test; ductility
- PACS:
- -
- DOI:
- -
- Abstract:
- In order to study the seismic behavior and axial compression ratio limits of high-strength concrete (HSC) columns confined with high-strength stirrups, the lateral low cyclic loading tests of ten HSC columns confined with high-strength complex stirrups under high axial compression ratio were carried out. Through theoretical deduction and regression analysis of large numbers of test data, the axial compression ratio limits of HSC columns at different seismic levels were proposed. The study results show that the displacement ductility coefficient of columns under high axial compression ratio, even excessive axial compression ratios, will meet the seismic requirements of being equal or greater than 3, when the volume stirrup ratio is greater than 1.2%. So using highstrength stirrups closely spaced is an effective measure to ensure the HSC columns good ductility and enhance the axial compression ratio limits.
Last Update: 2015-03-31