东南大学学报（英文版）2017，Vol.33Issue(1)：70-78,9.DOI:10.3969/j.issn.1003-7985.2017.01.012
低周反复荷载下钢筋增强ECC/混凝土组合柱抗震性能
Seismic behaviors of steel reinforced ECC/RC composite columns under low-cyclic loading
摘要
Abstract
To improve the seismic performance of columns,engineered cementitious composite (ECC) is introduced to partially substitute concrete at the base of the columns to form ECC/reinforced concrete (RC) composite columns.The mechanical behaviors of the ECC/RC composite colunns are numerically studied under low-cyclic loading with the finite element analysis software of MSC.MARC.It is found that the ECC/RC composite columns can significantly enhance the load capacity,the ductility and energy dissipation of columns.Then,the effects of the height of the ECC,the axial compression ratio and the longitudinal reinforcement ratio on the seismic behaviors of the composite columns are parametrically studied.The results show that the ECC/RC composite column with a height of the ECC layer of 0.8h(h is the height to the cross-section) can achieve similar seismic performance of a full ECC column.The peak load of the composite column increases significantly while the ductility decreases with the increase of the axial compression ratio.Increasing the longitudinal reinforcement ratio within a certain range can improve the ductility and energy dissipation capacity and almost has no effect on load capacity.The analysis results are instructive and valuable for reference in designing ECC structures.关键词
高延性纤维增强水泥基复合材料/ECC/混凝土组合柱/滞回曲线/延性/耗能/参数分析Key words
engineered cementitious composites (ECC)/ECC/RC composite columns/hysteretic curves/ductility/energy dissipation/parametric analysis分类
建筑与水利引用本文复制引用
潘金龙,莫创,许荔,陈俊涵..低周反复荷载下钢筋增强ECC/混凝土组合柱抗震性能[J].东南大学学报（英文版）,2017,33(1):70-78,9.基金项目
The National Natural Science Foundation of China (No.51278118),the Natural Science Foundation of Jiangsu Province (No.BK2012756),the Key Project of Ministry of Education of China (No.113029A),the Third Five-Year Major Scientific and Technological Project of China Metallurgical Group Corporation. （No.51278118）
