【摘要】 轻型开启桥的设计是以尽可能减少开启部分的结构重量为目标的。与传统开启桥相比,它采用无背索斜塔斜拉桥作为其开启结构,并采用移动开合压重作为其开合方式。本文提出了该类开启桥的两种开合方式,使用接触弹簧对其进行辅助开合,同时对智能预应力体系在控制结构变形方面进行了探讨。更多还原

【Abstract】 The light bascule bridge is a new kind of bridge with the aim of reducing the weight of bascule structure.Comparing with the traditional bascule bridge,cable-stayed bridge without backstays as its bascule structure and moving ballast as its opening-closing mode are choosed with it.This article puts forward two kinds of opening-closing mode,and uses touch-spring to assistant unseal.Simultaneously the smart prestressing system for distortion control is discussed.更多还原