Abstract

Based on the design and construction of the second Yangtze River bridge in Wuhu (hereinafter referred to as Wuhu Second Bridge), this article introduces the structural system of a full-floating cable-stayed bridge with four cable planes, a single-column tower and separated steel box girders. A series of innovative structural measures are taken to improve the safety and economy of the bridge, such as the looping stayed cable anchorage system, the diagonal damping constraint system, and the externally prestressed segmentally assembled box girders used in the approach bridge. In addition, finite element analysis software is used to study and analyse the mechanical characteristics of the bridge. Also, the reliability of the structural anchorage system and damping constraint system is verified. Finally, the construction technology adopted for Wuhu Second Bridge is briefly described.

摘要

本文以芜湖长江二桥（以下简称芜湖二桥）的设计和施工为基础，介绍了四索面、单柱塔、全浮式斜拉桥的结构体系。分离的钢箱梁。为提高桥梁的安全性和经济性，采取了一系列创新的结构措施，如环斜拉索锚固系统、对角阻尼约束系统、引桥采用外预应力分段拼装箱梁等。此外，还利用有限元分析软件对桥梁的力学特性进行研究分析。同时验证了结构锚固系统和阻尼约束系统的可靠性。最后，