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1.前言斜拉桥具有跨越能力大、结构受力合理、经济美观、并且有广泛适应性等优点,因而引起了国内外桥梁界的普遍重视,在我国也获得了迅速的发展。从1975年建成了我国第一座斜拉桥——云阳桥以来,已经有十年了。十年中,已建成了十二座斜拉桥。(表1)我国斜拉桥的特点是修建数量多,发展速度快,具有一定特色和水平。通过十多座桥的设计施工实践,目前基本上已摸清了这种桥型的特点,积累了一定的经验和教训,掌握了设计计算方法和要领,取得了可喜的进展。十年后的现在,又有十二座斜拉桥正在施工中(表2),这些桥跨度更大,设计更合理,新技术新工艺采用更多,充分显示了
1. INTRODUCTION Cable-stayed bridges have the advantages of large span, reasonable structure, economical and beautiful appearance, and wide adaptability. As a result, they have drawn widespread attention in the field of bridge at home and abroad and have also been rapidly developed in our country. It has been ten years since it built the first cable-stayed bridge in China - Yunyang Bridge in 1975. In ten years, twelve cable-stayed bridges have been built. (Table 1) China’s cable-stayed bridge is characterized by the construction of a large number of fast development, with certain characteristics and levels. Through the design and construction practice of more than a dozen bridges, the characteristics of this bridge type have been basically ascertained so far. Some experiences and lessons have been accumulated, and the methods and essentials of design calculation have been grasped and remarkable progress has been made. Ten years from now, a further 12 cable-stayed bridges are being constructed (Table 2). These bridges span more, with more reasonable design and more new technologies and processes, fully demonstrating