不同环境钢筋混凝土受弯构件承载力退化计算  

Calculation on the bearing degeneration of reinforcement concrete bending components under different environments

作　　者：曹茜[1] 

机构地区：[1]同济大学建筑设计研究院(集团)有限公司

出　　处：《山西建筑》2010年第25期340-342,共3页Shanxi Architecture

摘　　要：通过对处于不同环境下某三跨简支桥的实例计算,对比分析了混凝土碳化影响下和氯离子侵蚀下的桥梁耐久性退化的差异,结果表明:氯离子侵蚀引起的钢筋锈蚀,其腐蚀速度要比碳化引起的钢筋锈蚀快得多,结构承载力退化更显著。Through practical example calculation on a tri-span simply-supported bridge under different environments,it comparatively analyzed the differences of bridge durability degeneration under the impacts of concrete carbonization and chlorine erosion.The result indicated： the chlorine erosion causes reinforcement corrosion,and its corrosion speed is faster than the reinforcement corrosion caused by carbonization,and the degeneration of its structure bearing capacity is more obvious.

关 键 词：耐久性 氯离子侵蚀 碳化 钢筋锈蚀 

分 类 号：U441[建筑科学—桥梁与隧道工程]