特大跨径RC拱桥悬拼合拢技术的探讨

Discussion on Technology of Suspending and Connecting for the RC Bridge with an Unusual Big Span

通过对跨径３１２ｍ的中承式ＳＲＣ拱桥、跨径２７０ｍ的ＣＦＳＴ拱桥、跨径１８０ｍ的ＲＣ拱桥拱肋悬拼合拢成果的讨论，介绍了全新的千斤顶钢绞线斜拉扣挂及合拢技术，分析了采用此技术，对悬拼特大跨径拱桥拱肋的巨大优越性、发展前景以及同老技术的根本区别，认为悬拼５００ｍ跨径的ＳＲＣ拱桥的技术已经成熟。

Based on the researching achievement in arch span suspending and connecting for SRC bridge of mid supporting type with a span of 312m, CFST bridge with a span of 270m and RC bridge with a span of 180m, this paper has a description on the new technology for diagonal fastening and connecting by use of jacks and cables, the great superiority and developing future are analyzed, also the differences between the new and old technology are illustrated.