【摘要】 本文结合一座跨径为223.1m的无背索斜拉桥方案,初步探讨了三座大跨径无背索斜拉桥的动力特性,并分析了斜拉索、主梁、桥塔的刚度变化及辅助措施对结构动力性能的影响,为以后同类桥梁的动力设计提供借鉴。更多还原

【Abstract】 Based on one project of long span cable-stayed bridge without back-stays,the dynamic performance of this kind of bridge is discussed briefly.Influences of design parameters,such as cable,girder,pylon and auxiliary measures,to dynamic performance are also analyzed,which can serve as a guide to design.更多还原