摘要
混凝土坝老化表现在表层碳化、冻融、风化、内部溶蚀、冻胀、裂缝发育以及体积改变等。随着坝龄的增长,老化现象也越来越严重,结构安全度逐渐降低,最后超载系数接近或小于1,失去其使用功能。本文对混凝土坝老化现象进行分析,并对其安全评价进行探讨。
The aging of concrete dams is manifested by surface carbonization, freeze-thaw, abrasion, weathering, internal corrosion, frost-heaving, cracks, water erosion and et al. As time goes by, dam aging becomes serious and the overload coefficient gets close to 1 which means the dam is losing its function gradually. This paper analyzed the aging of concrete dams and evaluated dam safety, for reference.
出处
《大坝与安全》
2008年第4期4-8,共5页
Dam & Safety
关键词
混凝土坝
老化
超载系数
安全评价
concrete dam
aging
overload coefficient
safety evaluation
