Axial compressive behavior of recycled concrete filled corroded circular steel tubular columns

被引：0
|
作者：
Chen M. [1 ,2 ]
Fang W. [1 ,2 ]
Huang H. [1 ,2 ]
Wang C. [3 ]
Liu J. [1 ]
机构：
[1] School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang
[2] The State Local Joint Engineering Research Center for Security Technology of Operation Maintenance in Rail Transit Infrastructures, Nanchang
[3] Jiangxi Institute of Survey and Design, Nanchang
来源：
Jianzhu Jiegou Xuebao/Journal of Building Structures | 2019年 / 40卷 / 12期
关键词：
Axial compression test; Corrosion; Finite element analysis; Mechanical behavior; Recycled concrete filled circular steel tubular column;
D O I：
10.14006/j.jzjgxb.2018.0235
中图分类号：
学科分类号：
摘要：
Compression tests of six concrete filled circular steel tubular columns were conducted. The main parameter was the nominal corrosion level, namely 0%, 10% and 20%. In the tests, the whole loading process and failure mode of all concrete filled circular steel tubular columns were observed, and the stress-strain curves were obtained. The influence of the corrosion level on the axial compressive behavior of the specimens was analyzed. The law of stiffness degradation and the evolution law of damage of concrete filled corroded circular steel tubular columns were obtained. The results show that the bearing capacity of the specimens and the composite elastic modulus decrease, and the stiffness degradation increases with the increases of corrosion level. The type of core concrete has almost no effect on the bearing capacity of the corroded columns. Furthermore, the wall thickness reduction method of the outer steel tube was used with the ABAQUS software to simulate the load-deformation relationship of the columns under axial compressive load. In addition, the bearing capacity was calculated by the formula in GB 50936-2014. The experimental results are consistent with the simulation results and the calculation results. The wall thickness reduction method of the outer steel tube can effectively calculate the bearing capacity of recycled concrete filled corroded circular steel tubular columns. © 2019, Editorial Office of Journal of Building Structures. All right reserved.
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页码：138 / 146
页数：8
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