Abstract：In order to obtain failure form and mechanical performance of double-limb thin-walled piers under action of earthquake, effects of axial compression ratio, main reinforcement ratio and volume stirrup ratio on aseismic performance of this kind of piers were investigated with low cycle repeated load tests to obtain failure characteristics, hysteretic curves, displacement ductility and energy dissipation performance of all tested piers. The test results showed that failure modes of all tested piers are basically similar and they can be divided into three stages including elastic stage, elastic-plastic one and bending failure one; tested piers are seriously damaged at their bottoms and places connected with beams, significant bending failures appear at pier bottoms and tops; “X” shape cracks appear at places tied with beams; hysteretic curves of piers with higher main reinforcement ratio are fuller and their energy dissipation performance is good; proper increase in axial compression ratio can significantly improve ductility performance of tested piers; the deformation ability of each tested pier is better, displacement ductility of tested piers is within the range of 2.63-3.68 and has larger variation amplitude, main reinforcement ratio significantly affects ductility.
陈爱军，彭容新，王解军，贺国京. 大跨连续刚构桥双肢薄壁墩抗震性能研究[J]. 振动与冲击, 2020, 39(1): 1-7.
CHEN Aijun, PENG Rongxin, WANG Jiejun, HE Guojing. Aseismic performance of double-limb thin-walled piers of a large-span continuous rigid frame bridge. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(1): 1-7.
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