期刊
JOURNAL OF EARTHQUAKE ENGINEERING
卷 27, 期 8, 页码 2088-2118出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/13632469.2022.2104961
关键词
Ultra-high strength steel bars; high-strength concrete; steel fiber; steel tube-reinforced concrete column; seismic performance
Quasi-static tests were conducted on full-scale steel tube-reinforced high-strength concrete columns with ultra-high strength steel bars. The results showed that steel fiber-reinforced STRHSC columns with UHSS had superior damage control capability and reparability. A prediction model for skeleton curve, residual deformation, cumulative energy dissipation, and hysteretic curve was proposed and verified.
Quasi-static tests of five full-scale steel tube-reinforced high-strength concrete (STRHSC) column with ultra-high strength steel bars (UHSS) were conducted. Due to the large elastic range of UHSS, the column can obtain obvious drift-hardening behavior to reduce residual deformation. The research results reveal that steel fiber-reinforced STRHSC columns with UHSS had superior damage control capability and reparability. According the damage evolution theoretical analysis and measured result, a prediction model of skeleton curve, residual deformation, cumulative energy dissipation and hysteretic curve of STRHSC columns with UHSS was proposed. The model was then verified by comparing prediction results with test results.
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