铁道标准设计2026，Vol.70Issue(2)：106-113,8.DOI:10.13238/j.issn.1004-2954.202403050004
大跨度斜拉桥横向钢阻尼器力学性能研究
Study on Mechanical Performance of Transverse Steel Dampers for Long-Span Cable-Stayed Bridges
摘要
Abstract
Taking the Niutianyang Rail-cum-Road Bridge in Shantou as the engineering background,this study conducts an in-depth investigation into the mechanical performance of transverse steel dampers.By combining structural mechanics calculations and constitutive relation analysis of the transverse steel damper,theoretical formulas for design parameters such as yield force,vertical uplift force,yield displacement,damping displacement,initial stiffness,and post-yield stiffness were derived.An ABAQUS finite element model of the transverse steel damper was then established,and through numerical simulation,the equivalent plastic strain(PEEQ)of the double-arc steel and the simulated values of each design parameter were obtained and compared with their theoretical values.Cyclic loading tests with different load steps and fatigue tests were carried out on the transverse steel damper,and its hysteresis curves were obtained.The relationships between the measured values and the theoretical and simulated values of design parameters such as yield force,yield displacement,and initial stiffness were comparatively analyzed.The results showed that,when the equivalent plastic strain of the steel was near its limit value,the maximum deviations between the simulated and measured values of the design parameters of the transverse steel damper and their theoretical values were 8%and 9%,respectively,all of which satisfied the allowable deviation of±15%specified in the design specification,thereby verifying that the theoretical formulas were reasonable and feasible and could be directly applied to the development and design of transverse steel dampers to accelerate product development.By relating the limit equivalent plastic strain(PEEQ)of the double-arc steel to its damping displacement,the damping and energy-dissipation effect of the double-arc steel could be fully utilized,while the maximum deviation of each design parameter was controlled within±15%,so that the elastoplastic steel was fully utilized and the material cost of the product is reduced.关键词
大跨度斜拉桥/横向钢阻尼器/力学性能/数值仿真/试验/双弧形钢Key words
long-span cable-stayed bridge/transverse steel damper/mechanical performance/numerical simulation/test/double-arc steel分类
交通工程引用本文复制引用
王伟强,田杨,刘方成,李培璐,冷新云,夏俊勇..大跨度斜拉桥横向钢阻尼器力学性能研究[J].铁道标准设计,2026,70(2):106-113,8.基金项目
湖南省科技创新计划项目(2017XK2203) （2017XK2203）
