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Theoretical Stress–Strain Model for Concrete in Steel-Reinforced Concrete Columns
| 题名： | Theoretical Stress–Strain Model for Concrete in Steel-Reinforced Concrete Columns |
| 正文语种： | 英文 |
| 作者： | Xianzhong Zhao1; Fuping Wen2; Tak-Ming Chan, M.ASCE3; Si Cao4 |
| 作者单位： | 1Professor, State Key Laboratory of Disaster Reduction in Civil Engineering and College of Civil Engineering, Tongji Univ., Shanghai 200092, China (corresponding author). 2Ph.D. Candidate, College of Civil Engineering, Tongji Univ., Shanghai 200092, China. 3Assistant Professor, Dept. of Civil and Environmental Engineering, Hong Kong Polytechnic Univ., Hung Hom, Hong Kong. 4Master Student, College of Civil Engineering, Tongji Univ., Shanghai 200092, China. |
| 关键词： | Steel-confined concrete; Confinement mechanism; Region partition; Stress–strain model |
| 摘要： | This paper investigated the confinement mechanism of steel-confined concrete in steel-reinforced concrete (SRC) columns. Six axially loaded SRC-core columns were tested and the corresponding structural performance data were collected and assessed. Considering the confinement mechanism of both steel-confined and hoop-confined concrete, the concrete in the SRC columns was divided into four regions: highly steel-confined concrete (HSCC), partially steel-confined concrete (PSCC), partially confined concrete (PCC), and unconfined concrete (UCC). Based on Mander’s model, a theoretical stress–strain model for each concrete region was proposed and implemented in an analytical model to predict the mechanical behaviors of axially loaded SRC columns from the results of the tests described in this paper and of previous tests; satisfactory agreement was observed. |
| 出版年： | 2019 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | 145 |
| 期： | 4 |
| 页码： | 1-19 |
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