Experimental and Numerical Studies on Seismic Behavior of Q460 High Strength Steel Reinforced Concrete Column

作     者：Chen, Suwen Yang, Meng Hou, Zhao-Xin Li, Guo-Qiang Liu, Qing 

作者机构：State Key Laboratory for Disaster Reduction in Civil Engineering Shanghai China College of Civil Engineering Tongji University Shanghai China Central Research Institute of Building and Construction Co. Ltd. MCC Group Beijing100088 China 

出 版 物：《Key Engineering Materials》 (Key Eng Mat)

年 卷 期：2018年第763 KEM卷第1期

页      面：763-770页

核心收录：

学科分类：080602[工学-钢铁冶金] 08[工学] 0303[法学-社会学] 0710[理学-生物学] 0806[工学-冶金工程] 0807[工学-动力工程及工程热物理] 081402[工学-结构工程] 0708[理学-地球物理学] 0837[工学-安全科学与工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0813[工学-建筑学] 0814[工学-土木工程] 0836[工学-生物工程] 0701[理学-数学] 

主　　题：High strength steel 

摘      要：High strength steel reinforced concrete (HSRC) column refers to steel reinforced concrete column using high strength steel with its yield strength over 420MPa. So far, research on seismic behavior of HSRC columns is limited. This paper presents experimental and numerical studies on seismic behavior of HSRC columns. Two Q460 high strength steel reinforced concrete columns have been tested under low cyclic loading with constant axial compression ratio of 0.3. Flexural failure is observed in the test. From the hysteresis curves, the specimens exhibit good ductility and satisfactory energy dissipation capacity. Displacement ductility factors are larger than 2. When load descends to 85% of the peak load, the ultimate drift ratios of two specimens are 1/29 and 1/26 respectively, which meet the requirements of Chinese Seismic Design code (GB 50011). To study the seismic behavior of HSRC columns more comprehensively, a numerical model has been established for simulating the experiment using OpenSees, which adopts nonlinear beam-column element and fiber model. The numerical result fits the test data well, which validates the effectiveness of numerical model. Parametric study is then carried out to further investigate the seismic behavior of HSRC columns. © 2018 Trans Tech Publications Ltd, Switzerland.