水力发电学报2011，Vol.30Issue(5)：163-169,7.
李家峡拱坝大吨位锚索内锚固段岩体变形分析
Deformation analysis on rock mass around anchorage section of large-tonnage prestressed cable of Lijiaxia arch dam
摘要
Abstract
Study of rock mass deformation around anchorage section of large-tonnage prestressed cable is important to analysis of cable reinforcement mechanism and geotechnical engineering.In this paper,various issues,such as rock deformation,comparison of deformation with observations,long-term loss of prestressed cable anchoring force,etc are studied based on the long-term deformation monitor data of the left abutment block of Lijiaxia arch dam.The results show that the observations of perpendicular profiles reflect the rock mass deformation around anchorage section,and that within a certain distance to this section,rock mass damage is more severe than that of design level.Rock deformation is completed within four or five years that depends on the properties of rock mass,though anchor cable tension is implemented in a short time.In comparison of unbonded and fully-bounded pre-stressed anchors,the former loses about 30% of its anchoring force,while the latter loses much less.关键词
岩石力学/岩体变形/现场试验/大吨位锚索/内锚固段/李家峡拱坝Key words
rock mechanics/rock mass deformation/site test/large-tonnage prestressed cable/anchorage section/Lijiaxia arch dam分类
建筑与水利引用本文复制引用
蒋锁红,林鹏,郑文炜,康绳祖,管俊峰..李家峡拱坝大吨位锚索内锚固段岩体变形分析[J].水力发电学报,2011,30(5):163-169,7.基金项目
水沙科学与水利水电工程国家重点实验室科研课题 （）
水利部公益性行业科研专项经费 （）
国家科技十一五支撑计划项目 （）
