Ductility prediction of stiffened steel pipe-section bridge piers

作者：Liu, Naifan; Gao, Shengbin^*

来源：Journal of Harbin Institute of Technology, 2017, 49(3): 138-143.

DOI：10.11918/j.issn.0367-6234.2017.03.022

• Analytical results
• Bridge engineering
• Cyclic lateral loads
• Ductility behaviors
• Radius thickness ratios
• Slenderness ratios
• Two surface models
• Ultimate strength

To investigate the nondimensionalized ultimate strength and ductility behavior of stiffened steel pipe-section bridge piers subjected to a constant vertical load and cyclic lateral loads, the modified two-surface constitutive model and its finite element modeling were verified by comparing with the test results, and the effects of radius-thickness ratio, pier's slenderness ratio, stiffener's slenderness ratio and axial load ratio of the piers with eight stiffeners were investigated on the nondimensionalized ultimate strength and ductility. Some formulas based on the parametric analytical results were proposed to predict the nondimensionalized ultimate strength and ductility of piers. Numerical simulation results show that the nondimensionalized ultimate strength and ductility behaviors of the steel bridge piers could be notably improved when decreasing of radius-thickness ratio, pier's slenderness ratio, stiffener's slenderness ratio and axial load ratio.

• 出版日期2017
• 单位上海交通大学