港珠澳大桥主体混凝土结构120a使用寿命耐久性对策  

Durability strategy for main concrete structure of Hong Kong-Zhuhai-Macao bridge with designed service life of 120 years

作　　者：王胜年[1] 李克非[2] 范志宏[1] 苏权科 熊建波[1] 

机构地区：[1]中交四航工程研究院有限公司,水工构造物耐久性技术交通行业重点实验室,广东广州510230 [2]清华大学,北京100084 [3]港珠澳大桥管理局,广东珠海519015

出　　处：《水运工程》2015年第3期78-84,92,共8页Port & Waterway Engineering

基　　金：国家科技支撑计划项目(2011BAG07B00,2011BAG07B04)

摘　　要：跨越伶仃洋海域的港珠澳大桥提出了120 a使用寿命的建设目标,如何提高外海、高温、高湿环境下混凝土结构耐久性是工程建设面临的重大问题之一。结合港珠澳大桥工程实践,在工程建设前期和设计施工阶段,开展了针对混凝土结构耐久性的系列研究工作。在研究成果基础上,从耐久性设计、施工及后期维护等方面,提出了为确保港珠澳大桥达到120 a使用寿命所应采取的耐久性对策和措施。The service life of Hong Kong-Zhuhai-Macao bridge, which crosses the Pearl fiver estuary, is designed as 120 years. How to improve the durability of concrete structure located at the open sea with high temperature and humidity became one of the most important issues for the bridge construction. The systematical research on the concrete durability was carried out before and during the construction period based on the engineering practice. Based on the research, the strategies and measures for the durability design, construction and maintenance, which were applied to ensure the service life of 120 years, are expounded.

关 键 词：港珠澳大桥 混凝土结构 耐久性 寿命 设计 质量控制 维护 

分 类 号：TU528.33[建筑科学—建筑技术科学]