摘要
跨海大桥是最需要考虑节约资源和进行环境保护的桥梁,而大跨度公铁两用斜拉桥是世界上设计的桥梁中占用跨海通道资源最节约型的大桥,是跨海大桥设计的首选桥型。通过对国内外已建或在建的跨海通道大跨度公铁两用斜拉桥的调研,论述了部分大跨度公铁两用斜拉桥的结构设计关键技术,分析了大跨度公铁两用斜拉桥的钢梁和斜拉索的耐久性,并结合大跨度公铁两用斜拉桥的结构特点,对比了适用于大跨度公铁两用大桥斜拉桥的结构体系和桥面布置,指出了影响公铁两用斜拉桥跨度增大的问题与对策。
Resource conservation and environmental protection need to be considered most when it comes to cross-sea bridge. Long-span rail-road cable-stayed bridge is a primary choice for cross-sea bridge, which shows advantage in saving channel resources. According to the investigation on long-span rail-road cable-stayed bridges which are existing or under construction worldwide, some key technologies are addressed. At the same time, research on durability of steel girder and stayed cable is conducted, in which a contrastive analysis on structural systems and arrangements is carried out on the basis of structural features of long-span rail-road cable-stayed bridges. Solutions to the problem to further increase the span of long-span rail-road cable-stayed bridge are also put forward. Results of this paper could be taken as technical reference for the design of the same type of cross-sea bridges.
出处
《科技导报》
CAS
CSCD
北大核心
2016年第21期27-33,共7页
Science & Technology Review
基金
国家自然科学基金项目(51578047
51178042)
中国铁路总公司科技研究开发项目(2014G004-B)
交通运输部创新科技项目(2013315494011)
中国交通建设股份有限公司科技特大研发项目(2014-ZJKJ-03)
关键词
跨海通道
公铁两用大桥
大跨度斜拉桥
结构体系
桥梁耐久性
cross sea channel bridge
rail-road bridge
long-span cable-stayed bridge
structural system
bridge durability
