Analysis of the Frost Movement of the Fengman Concrete Gravity Dam
In this paper the frost movement of concrete was defined after carefully examining the mechanism of frost action of concrete and typical deformation process of concrete specimens. Then the phenomenon of “two peaks in one year in the vertical and horizontal displacement at crest of Fengman concrete gravity dam was probed into accordingly. And by finite element analysis of the equivalent thermal deformation simulating the effect of freezing-thawing action, it was shown that the dam crest moves horizontally as well as vertically resulting from frost action. Furthermore, the observed displacements at crest of Fengman dam were analyzed using statistic models including factors representing the effect of frost action. The results indicated that frost movement, in the form of seasonal movement and growing tendency in the time component, still took place even after the rehabilitation of Fengman dam was completed and the phenomenon of “two peaks in one year became less evident.
Fengman concrete gravity dam frost movement frost action ageing assessment rehabilitation
LU Zhengchao ZHANG JInpin LI Libing ZHAO Chun LI Sumei
Dept.of Structures and Materials, China Institute of Hydropower and Water Resources Research,Beijing 100038, China
国际会议
西安
英文
1-16
2005-11-01（万方平台首次上网日期，不代表论文的发表时间）