建筑结构学报2018，Vol.39Issue(4)：28-36,9.DOI:10.14006/j.jzjgxb.2018.04.004
人工气候环境下锈蚀RC框架柱抗震性能试验研究
Experimental investigation on seismic behaviors of corroded RC frame columns in artificial climate
摘要
Abstract
In order to study the influence of steel corrosion level and axial compression ratio on the bearing capacity,deformation capacity,energy dissipation capacity etc.of corroded RC frame columns,six RC frame column specimens with a shear span ratio of 5 were subjected to accelerated corrosion tests by artificial climate simulation technique followed by quasi-static tests.The results show that the number of horizontal cracks at the bottom of the severely corroded specimens is relatively small,with the spacing between the cracks being relatively large and the width of the cracks being relatively wide.With increase in the degree of corrosion,the bearing capacity,deformation capacity and energy dissipation capacity of the specimens degrade to varying extents,and the column top lateral displacement caused by the flexural deformation of the plastic hinge region takes up a decreased proportion of the total column top lateral displacement.As the compression ratio increases,the failure mode of the specimens with the same corrosion degree changes from large eccentric compression failure to small eccentric compression failure,while the bearing capacity of the specimens increases at first and then decreases.In the meantime,the deformation capacity and energy dissipation capacity degrade gradually,and the column top lateral displacement caused by the flexural deformation of the plastic hinge region make up decreased proportion of the total column top lateral displacement.关键词
RC框架柱/人工气候环境/近海大气环境/锈蚀程度/拟静力试验/抗震性能Key words
RC frame column/artificial climate/coastal atmosphere/corrosion degree/quasi-static test/seismic behavior分类
建筑与水利引用本文复制引用
郑山锁,董立国,左河山,秦卿,刘巍,李强强..人工气候环境下锈蚀RC框架柱抗震性能试验研究[J].建筑结构学报,2018,39(4):28-36,9.基金项目
“十二五”国家科技支撑计划(2013BAJ08B03),国家自然科学基金项目(51678475),陕西省重点研发计划(2017ZDXM-SF-093),陕西省教育厅产业化项目(2017JC15). （2013BAJ08B03）
