防灾减灾工程学报2012，Vol.32Issue(2)：138-144,7.
混凝土重力坝FRP片材表面加固抗震性能研究
Study on Seismic Resistance Capacity of Concrete Gravity Dam Strengthened with Externally Bonded FRP-plate
摘要
Abstract
Improving seismic resistance capacity of dam, especially its weak positions has become a hot spot of seismic research. Based on pushover method, a damage model of concrete considering its microscopic in-homogeneity was employed to analyze dam's damage process during earthquake, also the effectiveness of externally bonded FRP-plate reinforcement was discussed. Taking two different concrete gravity dams for examples, researches on heel and head reinforcement were conducted respectively. Comparisons of stress distribution, crack propagation and failure forms before and after strengthening show that externally bonded FRP-plate reinforcement of heel could improve its seismic resistance, and restrain emergence and development of crack effectively; also that of head could promote its seismic resistance in certain extent, but whether dam body downstream is reinforced does little influence on the seismic resistance.关键词
混凝土重力坝/FRP片材表面加固/抗震性能/损伤分析/Pushover方法Key words
concrete gravity dam/ externally bonded FRP-plate reinforcement/ seismic resistance performance / damage analysis/ Pushover method分类
建筑与水利引用本文复制引用
王娜丽,钟红,林皋..混凝土重力坝FRP片材表面加固抗震性能研究[J].防灾减灾工程学报,2012,32(2):138-144,7.基金项目
国家自然科学基金(90510018,90915009,51009019)、高等学校博士点基金(200801411099)、清华大学水沙科学与水利水电工程国家重点实验室开放基金项目(sklhse-2010-C-03)资助 （90510018,90915009,51009019）
