摘要
应用大型分析系统软件FINAL,采用特有的接触界面单元模拟潜在滑动面和特殊的锚索单元模拟预应力锚索,对锦屏一级水电站左岸拱肩槽边坡潜在不稳定块体进行稳定性分析和加固措施研究。高边坡开挖、预应力锚索加固施工过程的数值仿真分析结果表明,采用界面单元、锚索单元,充分考虑了岩体中的不连续结构面以及预应力锚索的预应力和刚度对岩质高边坡稳定性和应力场、位移场的重要影响,较好地反映出预应力锚索在各种工况下的工作性态及加固机制,对工程中岩质高边坡的稳定性分析、加固设计有较好的借鉴和指导作用。
Using a special contact interface element and a proposed bolt element to simulate the slip surface and prestressed anchorage cable respectively,stability analysis for an instable block located in left abutment slope of Jinping Hydropower Station is carried out by software FINAL.The influence of discontinuous structures and the stiffness and prestress of the prestressed anchorage cables on the stability,the stress and displacement fields of the high rock slope are fully considered.The results of the numerical analysis indicate that the prestressed anchorage cables obviously improve the stability of the slope,especially when the slope is subjected to seismic loads.At the same timet,he results also explain the reinforcement mechanism of the prestressed anchorage cables.The obtained results are of great significance to optimize the design of the prestressed anchorage cable.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2007年第1期36-43,共8页
Chinese Journal of Rock Mechanics and Engineering
基金
雅砻江锦屏一级水电站左岸拱坝拱肩槽及缆机平台开挖边坡稳定性分析与支护措施专题研究课题资助
关键词
边坡工程
岩质高边坡
滑动面单元
预应力锚索单元
加固措施优化
slope engineering
high rock slope
slip surface element
prestressed anchorage cable element
optimization of reinforcement measurements
