海水环境下的桥梁设计  

Bridge Design Under Seawater Environment

作　　者：张朝旭[1] 

机构地区：[1]辽宁省交通科学研究院,沈阳110015

出　　处：《北方交通》2008年第3期101-103,共3页Northern Communications

摘　　要：处于海水环境中的混凝土桥梁结构,由于氯盐环境的影响导致结构内的钢筋极宜锈蚀,进而大幅度降低了桥梁的使用寿命,对结构的安全也带来了危害。简要分析了海水环境下桥梁结构腐蚀的原因,并就海水环境下的桥梁结构防腐耐久性技术措施从结构形式、构造及材料选择等几个方面进行分析论述。最后,针对北方海洋环境下桥梁的设计和施工,提出具体的提高桥梁抗腐蚀性的技术措施。The concrete bridge structure being in seawater enrironment makes the reinforcements in structure extremely ease to be rusted owing to influence of salt -chlorid environment, further lowers by big margin the service life of bridge and brings harm to structure＇s safetey. The paper briefly analyzes reasons for bridge structure rusting under seawater environment, and discusses the technical measures for durability and anticorrosion of bridge structure in this environment from structure form ,texture and choice of materials etc. Finally, it presents technical measures to increase the anticorronsion of bridge from design and construction of bridge in northern oceanic environment.

关 键 词：钝化膜 耐久性 钢筋锈蚀 高性能混凝土 掺和剂 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]