Creep of high strength concrete filled steel tube columns

被引:31
|
作者
Ma, Yi Shuo [1 ]
Wang, Yuan Feng [1 ]
机构
[1] Beijing Jiaotong Univ, Sch Civil Engn, Beijing 100044, Peoples R China
基金
美国国家科学基金会;
关键词
High strength concretes; Concrete filled steel tube; Columns; Creep; Model studies; Tests; HIGH-PERFORMANCE CONCRETE; OF-THE-ART; TUBULAR COLUMNS; DRYING SHRINKAGE;
D O I
10.1016/j.tws.2011.12.012
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
High strength concrete filled steel tube (HSCFT) members have found wide applications. However, there are few reports on the test and model of their creep. This paper investigates the creep of axially loaded HSCFT columns by testing eight specimens for 380 day. A creep model, considering the state of triaxial stress and autogenous shrinkage of the high strength concrete core, has been proposed and validated against the test data. Parametric analysis demonstrates that there exists an obvious difference in the creep between HSCFT columns and normal strength concrete filled steel tube columns, additionally, concrete composition influences the creep of HSCFT columns considerably. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码:91 / 98
页数:8
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