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Experimental and Numerical Study on Size Effect in Eccentrically Loaded Stocky RC Columns
| 题名： | Experimental and Numerical Study on Size Effect in Eccentrically Loaded Stocky RC Columns |
| 正文语种： | 英文 |
| 作者： | Liu Jin; Dong Li, Ph.D.; Xiuli Du; Aizhen Lu;Zixing Ding, Ph.D. |
| 作者单位： | Beijing Univ, of Technology;Beijing Engineering Technology Research Center for Micro-Vibration Environmental Control; |
| 关键词： | Reinforced concrete (RC) column; Size effect; Eccentric compression; Brittle-ductile transition; Failure mechanism; Mesoscale simulation; Transversal reinforcement; Analysis and computation. |
| 摘要： | The objective of this paper is to study the size effect in eccentrically loaded stocky reinforced concrete (RC) columns from both experimental and numerical perspectives. An experimental campaign was carried out on eccentrically loaded RC columns of full-scale to facilitate a more accurate understanding of the influence of eccentricity on the failure behavior and size effect. A total of 30 geometrically similar RC columns sized from 200 x 200 x 900 mm to 800 x 800 x 3,600 mm was tested with the eccentricities of 0.1h0,0.25h0,0.4h0 0.6h0, and 0.9h0 (h0 denotes the effective cross-sectional height). A brittle-ductile transition behavior according to the initial eccentricity was found from the test observations, and a comparison of the present test results and the SEL proposed by Bazant was made. Meanwhile, a mesoscale numerical method for the simulation of failure behavior of RC columns was proposed. Good agreement between the present simulation results and the test observations of the RC columns without transversal reinforcement illustrates the reliability and accuracy of the numerical approach. The verified mesoscale approach was then extended to study the failure behavior of RC columns having transversal reinforcement, and the confinement effect was also discussed. DOI: 10.1061/(ASCE)ST. 1943-541X.0001655. © 2016 American Society of Civil Engineers. |
| 出版日期： | 2017.02 |
| 出版年： | 2017 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | Vol.143 |
| 期： | NO.02 |
| 页码： | 04016170 |
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