Volume 27 Issue 10
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SUN Zhi-guo, SI Bing-jun, WANG Dong-sheng, YU De-hai. RESEARCH ON CONFINING REINFORCEMENT FOR HIGH-STRENGTH CONCRETE COLUMNS WITH HIGH-STRENGTH STIRRUPS[J]. Engineering Mechanics, 2010, 27(10): 182-189,.
Citation: SUN Zhi-guo, SI Bing-jun, WANG Dong-sheng, YU De-hai. RESEARCH ON CONFINING REINFORCEMENT FOR HIGH-STRENGTH CONCRETE COLUMNS WITH HIGH-STRENGTH STIRRUPS[J]. Engineering Mechanics, 2010, 27(10): 182-189,.
shu

RESEARCH ON CONFINING REINFORCEMENT FOR HIGH-STRENGTH CONCRETE COLUMNS WITH HIGH-STRENGTH STIRRUPS

  • (1. Institute of Road and Bridge Engineering, Dalian Maritime University, Dalian, Liaoning 116026, China; 2. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China)

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  • Received Date: December 31, 1899
  • Revised Date: December 31, 1899
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  • Quasi-static test results of 98 rectangular and 11 circular high-strength concrete (HSC) columns with high-strength stirrups (HSS) are collected to study the confining reinforcement for ductile HSC columns. Based on the analysis of test results, it is concluded the parameters that have significant influences on the ductility of HSC columns are characteristic value of stirrups, axial load ratio, longitudinal reinforcement and concrete cover thickness. Based on regression analysis, design equations and design details are suggested, which stipulate the amount of confining reinforcement required to achieve ultimate drift ratios of 2% and 3% with 85% assurance rate for HSC columns. The design equations and details can be applied to the columns with concrete compression strength of 40MPa―110MPa, stirrup yield strength of 400MPa―800MPa and experimental axial load ratio of 0―0.6.
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