湖南大学学报（自然科学版）Issue(1)：89-96,8.
端部设肋方钢管混凝土框架柱抗震性能分析
Seismic Analysis of the Square Concrete-filled Steel Tube Frame Column with End Ribs
摘要
Abstract
A square concrete-filled steel tube frame column with end ribs was put forward.The end longitudinal rib was used to avoid the premature local buckling of steel tube wall and then to improve the load carrying capacity, ductility and seismic performance of concrete-filled steel tube.Refined nonlinear finite element (FE)models were es-tablished by using MSC.Marc to study the existing experiments,and the results from the FE models fit well with the test data.Based on the reasonability of the FE models,parametric analyses were carried out to further explore the be-havior of the square concrete-filled steel tube frame column with end ribs.The analyses have shown that the end ribs can delay the local buckling of the steel tube and improve the load carrying capacity,ductility and seismic performance. The length of the end ribs are to be set at 1~2 times the sectional side length from the column end,and the height and thickness of the end ribs should satisfy certain structural requirements.The increase of the thickness of the end ribs or the number of end ribs on each side can improve the load carrying of the column,and the latter is better.关键词
方钢管混凝土框架柱/端部设肋/有限元/抗震分析/延性Key words
square concrete-filled steel tube frame column/end ribs/finite element/seismic analysis/ductility分类
建筑与水利引用本文复制引用
黄远,朱正庚,杨扬,易伟建,张锐..端部设肋方钢管混凝土框架柱抗震性能分析[J].湖南大学学报（自然科学版）,2016,(1):89-96,8.基金项目
国家自然科学基金资助项目（51108171，51338004），National Natural Science Foundation of China（51108171，51338004）；湖南省自然科学基金资助项目（14JJ3054）；中央高校科研业务费资助项目 （）
