Abstract：In order to study the seismic behaviors of corroded steel frame column in the coastal atmosphere, the accelerated corrosion tests on 8 steel frame columns and 3 groups of steel specimens with different thickness were conducted by applying the technique of artificial climate accelerated corrosion. Based on the tensile tests of steel specimens, the degradation characteristics of steel mechanical properties (yield strength, ultimate strength, elongation and elastic modulus) with the increase of weight loss rate were obtained. Low-cycle cyclic loading tests on 8 specimens were also carried out, the failure modes and characteristics of columns were observed, and furthermore, the influences of axial compression ratio, corrosion degree and loading paths on seismic performance of columns were studied preliminarily from the perspectives of hysteretic curves, skeleton curves, strength and stiffness degradation, and energy dissipation. The results showed that the ultimate bearing capacity, energy dissipation capacity, strength and stiffness of columns degraded significantly with the increase of the corrosion degree. With the increase of axial compression ratio, the bearing capacity and ductility decreased. Moreover, loading paths may have an obvious influence on the development of plastic deformation and hysteretic energy dissipation of columns. As a result, the results may provide the experimental support for carrying out the seismic fragility analysis of corroded steel frame structure.
郑山锁 张晓辉 王晓飞 程 洋 孙乐彬. 近海大气环境下多龄期钢框架柱抗震性能的试验研究[J]. 土木工程学报, 2016, 49(4): 69-77.
Zheng Shansuo Zhang Xiaohui Wang Xiaofei Cheng Yang Sun Lebin. Experimental research on seismic behaviors of multi-aged steel frame columns in the offshore atmospheric environment. 土木工程学报, 2016, 49(4): 69-77.
