Abstract：In order to study the seismic behaviors of beam-column joints of corroded RC frame in the coastal atmosphere, the accelerated corrosion tests for 6 beam-column joint specimens of RC frame were conducted by applying the technique of artificial climate accelerated corrosion, and the quasi-static tests were then carried out. The failure modes and seismic degradation characteristics of joints were obtained under different corrosion degree and axial compression ratio. The results showed that for corroded joints, the corrosion degree of stirrups was more serious than that of longitudinal reinforcement, and as a result of the reduced constraint of corroded stirrups, the severe damage of joints can be observed. With the increase of corrosion rate of stirrups, the strength, ductility, energy dissipation, bearing capacity and deformation capacity of joints degenerated with different extents. When the corrosion degree was same, the stiffness degradation appeared to be more apparent with the increase of axial compression ratio. It was also shown that the stiffness degradation was serious before cracking for the joints with small axial compression ratio, and then tended to be stable after yielding.
郑山锁, 孙龙飞, 刘小锐, 杨威. 近海大气环境下锈蚀RC框架节点抗震性能试验研究[J]. 土木工程学报, 2015, 48(12): 63-71.
Zheng Shansuo, Sun Longfei, Liu Xiaorui, Yang Wei. Experimental research on seismic behaviors of beam-column joints of corroded RC frame in the coastal atmosphere. 土木工程学报, 2015, 48(12): 63-71.
