卸荷岩体锚固预应力损失的影响因素分析  

Analysis of factors affected on prestress losses of unloading rock mass

作　　者：李建林[1] 邓华锋[1] 黄建文[1] 王乐华[1] 杨学堂[1] 

机构地区：[1]三峡大学土木水电学院,湖北宜昌443002

出　　处：《岩土力学》2005年第S1期292-295,共4页Rock and Soil Mechanics

基　　金：教育部重点资助项目(No.02099)。

摘　　要：讨论了影响卸荷岩体锚固预应力变化的岩体应力状态、岩体性质与流变、锚固时间、钢材松弛、施工质量、锚索结构与环境变化等因素,得出了不同因素对卸荷岩体锚固预应力损失的影响效应,并分析了各种影响因素与预应力损失的耦合作用,得出了相关的结论。The factors affected on prestress losses of unloading rock mass such as stress state of rock mass, rock mass property, rheology of rock mass, the time of prestress action, steel fiber relaxation, construction quality, anchor cable structure, environment change in long time are discussed; the mechanism of prestress losses with factors is put forward; and the coupling between different factors and prestress losses is discussed too. The relevant conclusions are drawn.

关 键 词：卸荷岩体 预应力锚索 预应力损失 

分 类 号：TU452[建筑科学—岩土工程]