摘要
从结构、材料和工艺等方面 ,研究了青藏铁路桥梁结构形式和提高耐久性的措施 ,研究认为 ,按照提高耐久性设计原则 ,重视采用掺加改性材料和外加剂的高性能混凝土、先张法预应力混凝土梁、YZM圆柱面钢支座 ,对后张法预应力混凝土梁管道采用真空灌浆工艺等 ,可以较好地适应施工和使用环境条件 。
Structural types and technical measures to improve structural durability of the bridges to be built on Qinghai Tibet Railway Line are studied in all aspects of design, materials and construction technologies. The study shows that according to the design principle to improve the bridge durability, using high performance concrete with appropriate modified materials and/or admixture, pre tensioning prestressed concrete gitders, YZM cylindrical surface steel bearing and vacuum grouting for post tensioning prestressed concrete ducts will well agree with the construction and environment conditions of the bridges and will eventually improve the durability of the bridges.
出处
《桥梁建设》
EI
CSCD
北大核心
2002年第6期6-10,共5页
Bridge Construction
基金
铁道部科技研究开发计划项目 (2 0 0 1G0 0 3 )
关键词
结构形式
青藏铁路
铁路桥
钢筋混凝土桥
简支梁
桥梁设计
耐久性
Qinghai Tibet Railway Lines
railway bridge
reinforced concrete bridge
simply supported girder bridge
bridge design
durability
