同济大学学报（自然科学版）2013，Vol.41Issue(3)：330-335,354,7.DOI:10.3969/j.issn.0253-374x.2013.03.003
钢管再生混凝土柱抗震性能与损伤评价
Seismic Behavior and Damage Assessment of Recycled Aggregate Concrete-filled Steel Tube Columns
摘要
Abstract
This paper presents a low frequency cyclic loading test for six recycled concrete-filled steel tube (RCFS) columns. The main parameters in this study include the recycled coarse aggregate (RCA) replacement percentage and the strength of core concrete. The bearing capacity, stiffness degradation, ductility, energy dissipation capacity and failure pattern of columns with different RCA replacement percentage are experimentally studied. Research findings indicate that the RCFS columns exhibit fine seismic behavior. The energy dissipation ability, ductility and hysteresis performance change slightly with the variation of the RCA replacement percentage and concrete strength. It is also figured out that the bond-slip has little effect on the seismic behavior of the RCFS columns, and the RCA replacement percentage does not influence the bearing capacity of confined recycled concrete columns obviously. Finally, an improved damage assessment model which is based on the Miner principle is developed. The damage level of RCFS columns is better reflected by this model, and the analysis results are in accordance with the test ones.关键词
钢管再生混凝土/再生粗骨料取代率/抗震性能/粘结滑移/损伤指标Key words
recycled aggregate concrete-filled steel tube column/ recycled coarse aggregate replacement percentage/ seismic behavior/ bond-slip effect/ damage index分类
建筑与水利引用本文复制引用
黄一杰,肖建庄..钢管再生混凝土柱抗震性能与损伤评价[J].同济大学学报（自然科学版）,2013,41(3):330-335,354,7.基金项目
国家自然科学基金(51178340),上海市科委项目(10231202000) （51178340）
