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。 The lightweight open bridge is designed to minimize the structural weight of the open section. Compared with the traditional open bridge, it uses the backless tower cable-stayed bridge as its open structure, and uses the mobile opening and closing pressure as its opening and closing methods. In this paper, two kinds of opening and closing methods for opening the bridge are proposed. The contact springs are used to assist the opening and closing of the bridge. At the same time, the intelligent prestressing system is discussed in the aspect of the deformation of the control structure.