建筑结构学报2017，Vol.38Issue(9)：38-45,8.DOI:10.14006/j.jzjgxb.2017.09.005
外包配筋ECC组合柱抗震性能试验研究与有限元分析
Experimental study and finite element analysis of seismic behavior of reinforced ECC composite columns
摘要
Abstract
Engineered cementitious composites (ECC)is a high toughness composite material with pseudo strain hardening behavior and multiple cracking characteristics.ECC permanent formwork for the construction of durable concrete column forming reinforced ECC composite column was proposed.Quasi-static tests on four reinforced ECC composite column and one reinforced concrete (RC) column were carried out,and the failure pattern and seismic behavior were investigated.Experimental results indicate that reinforced ECC composite columns show better seismic performance in terms of ductility,energy dissipation capacity,and damage tolerance,compared with RC columns.Increasing in shear span-to-depth ratio can result in increase of displacement ductility factor (enhanced by 50％) and energy dissipation capacity (enhanced by 185％),however,the load-carrying capacity becomes lower.In addition,with the increase of stirrup ratio,the deformation capacity increases and the stiffness degradation becomes lower.Proposed constitutive model of reinforced ECC was coded into the OpenSees platform and applied to simulate the behavior of specimens.The simulation results indicate that the proposed constitutive model is reasonably accurate in simulating the mechanical properties of reinforced ECC composite columns.关键词
组合柱/工程用水泥基复合材料/拟静力试验/抗震性能Key words
composite column/engineered cementitious composites/quasi-static test/seismic behavior分类
建筑与水利引用本文复制引用
潘钻峰,刘籍蔚,吴畅,乔治,梁坚凝,孟少平..外包配筋ECC组合柱抗震性能试验研究与有限元分析[J].建筑结构学报,2017,38(9):38-45,8.基金项目
国家自然科学基金青年项目(51208093),国家自然科学基金国际交流项目(51411140246),教育部博士点基金项目(20120092120021). （51208093）
