Experimental study on seismic behavior of partially deteriorated RC columns retrofitted with CFRP

被引：0
|
作者：
机构：
[1] State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian
来源：
Wu, Zhimin | 1600年 / Science Press卷 / 35期
关键词：
CFRP retrofitting; Finite element analysis; Partially deteriorated RC column; Quasi-static test; Seismic behavior;
D O I：
10.14006/j.jzjgxb.2014.09.007
中图分类号：
学科分类号：
摘要：
This paper mainly focused on the seismic behaviors of partially deteriorated reinforced concrete (RC) columns retrofitted with carbon fiber reinforced polymers (CFRP). Firstly, the seismic behavior of partially deteriorated RC columns and the corresponding CFRP retrofitted columns were examined by experiment. Then the finite element analysis (FEA) of seismic behavior of specimens were carried out with software ABAQUS. The calculated results were compared with and verified by the experimental data. The influences of deteriorated concrete location, the strength of deteriorated concrete and the thickness of CFRP on the retrofitting effects were then analyzed. Meanwhile, a new concept named critical deteriorated height of partially deteriorated columns, used to determine the failure location of partially deteriorated columns, was developed. Finally, to determine the thickness of retrofitted CFRP on partially deteriorated RC column in design, a method was proposed. It is concluded that the partially deteriorated concrete may weaken the seismic behaviors of RC columns. The influences of partially deteriorated concrete on the seismic behavior are related to the location of deteriorated segment, strength of deteriorated concrete and axial load ratio. The CFRP retrofitting can recover the seismic behavior of partially deteriorated columns when the strength of intact concrete lowers then the equivalent target strength of concrete.
引用
收藏
页码：48 / 56
页数：8
相关论文
共 13 条
  • [1] Haroun M., Elsanadedy H., Fiber-reinforced plastic jackets for ductility enhancement of reinforced concrete bridge columns with poor lap-splice detailing , Journal of Bridge Engineering, 10, 6, pp. 749-757, (2005)
  • [2] Ozcan O., Binici B., Ozcebe G., Improving seismic performance of deficient reinforced concrete columns using carbon fiber-reinforced polymers , Engineering Structures, 30, 6, pp. 1632-1646, (2008)
  • [3] Li J., Yu C., Tang Y., Et al., Experimental research of post-heated RC columns retrofitted with CFRP , Journal of Architecture and Civil Engineering, 28, 4, pp. 48-54, (2011)
  • [4] Si B., Sun Z., Wang Q., Et al., Rapid reinforcement technology of post-earthquake ductile RC piers , Journal of Dalian University of Technology, 50, 1, pp. 93-98, (2010)
  • [5] Li J., Gong J., Wang L., Experimental study on seismic behavior of corroded reinforced concrete columns strengthened with concrete jacket and CFRP , China Civil Engineering Journal, 42, 4, pp. 17-26, (2009)
  • [6] Wei H., Wu Z., Guo X., Et al., Experimental study on partially deteriorated strength concrete columns confined with CFRP , Engineering Structures, 31, 10, pp. 2495-2505, (2009)
  • [7] Wei H., Wu Z., Zhang P., Axial experiment on CFRP confined steel reinforced concrete columns with partial deteriorated strength , Journal of Reinforced Plastic and Composites, 29, 6, pp. 874-882, (2010)
  • [8] Wei H., Compressive performance study on CFRP wrapped concrete columns with partial deteriorated strength , pp. 71-120, (2009)
  • [9] Specification of testing methods for earthquake resistant building, (1997)
  • [10] Attard M., Setunge S., Stress-strain relationship of confined and unconfined concrete , ACI Materials Journal, 93, 5, pp. 432-441, (1996)
12