摘要
由于内地和香港地区的规范关于港珠澳大桥设计寿命规定有差异,在合理分析后确定大桥采用120年的设计寿命,为满足这一要求的主要对策措施包括设计寿命对应的荷载标准取值、合理的结构构造、强腐蚀海洋环境中的耐久性保证措施等。进而根据耐久性研究结果,对基本环境作用类别与等级、构件耐久性极限状态及设计使用年限、不同混凝土构件的主要控制指标及表面裂缝计算宽度限值、钢结构主要部件的防腐措施等内容进行了总结。
Due to the difference in regulated design life of HZM between mainland region and Hong Kong region through rational analysis it is determined that HZMB uses 120 years design life.To meet this requirement on design life the main countermeasures adopted include load standard value corresponding to the design life, rational structural configuration, durability assurance in strongly corrosive oceanic environment.Further in accordance with durability research achievements summarizes such contents as types of actions of fimdamental environmental impacts and grades, ultimate state of durability of elements and design service life ,primary critical index of different concrete elements and width limit value in surface crack calculation, anti corrosion measures for main parts of steel structure.
出处
《混凝土》
CAS
CSCD
北大核心
2011年第12期24-27,共4页
Concrete
关键词
港珠澳大桥
设计
技术标准
三地规范
设计寿命
荷载标准
耐久性
Hong Kong-Zhuhai-Macao Link
design
technical standard
specifications of three regions
design life
load standard
durability
