摘要
超大跨度桥梁对风的作用较为敏感,抗风性能已成为超大跨度桥梁设计的控制性因素。分离三箱主梁是超大跨度桥梁典型的主梁断面形式,但针对分离三箱主梁的气动性能的研究较为少见。针对分离三箱主梁,设计了6种不同气动措施,通过对比不同气动措施情况下桥梁的静风稳定性能和颤振稳定性能,讨论各气动措施设置对分离三箱主梁气动特性的影响,并提出气动措施设置方法的建议,研究结论对超大跨度桥梁气动优化具有指导意义。
Super-long-span bridges are sensitive to natural winds. Wind-resistant performance is the control factor in the design of super-long-span bridges. The three-box-girder deck is typical form for tile super-long-span bridge. However, little research results on aerodynamic characteristics of three-box-girder deck are published. Six kinds of aerodynamic measures are designed for the three-box-girder deck. The aerostatic stability and the flutter stability are compared to study the effects of different aerodynamic measures on the aerodynamic characteristics of the three-box-girder deck. And suggestions about aerodynamic measures arrangement methods are presented which can rovide references for aerodynamic optimization of super-long-span bridges.
出处
《土木工程学报》
EI
CSCD
北大核心
2013年第1期61-68,共8页
China Civil Engineering Journal
基金
国家863计划(2008AA11Z101)
四川省杰出青年学科带头人计划(2009-15-406)
中央高校基本科研业务费专项资金(SWJTU10ZT01)
关键词
超大跨度桥梁
气动特性
气动措施
静风稳定性
颤振稳定性
super-long-span bridge
aerodynamic characteristics
aerodynamic measures
aerostatic stability
flutter stability
