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向家坝进水口高边坡系统锚杆受力状况研究
引用本文:彭作为,周创兵,龚玉峰,孔建.向家坝进水口高边坡系统锚杆受力状况研究[J].岩土力学,2006,27(3):482-486.
作者姓名:彭作为  周创兵  龚玉峰  孔建
作者单位:武汉大学 水利水电学院,武汉 430072
摘    要:向家坝水电站进水口高边坡地质条件较好,坡形较合理,设计拟采用系统锚杆对其进行加固。由于系统锚杆作用的被动性和边坡岩体变形的非均匀性,使得不同位置的锚件的应力出现较大的差别。利用有三维弹黏塑性有限单元法对向家坝进水口边坡中系统锚杆的受力状况进行了模拟和分析,从计算结果可以清晰地看出:边坡岩体不同部位的锚杆受力与被锚岩体的位移变形有一定的关系,而且设计采用的逐步开挖逐步锚固的施工步骤,使得先期锚入的锚杆受力随着后期开挖锚固的进行而逐渐加大。其计算结果为优化设计提供了依据。

关 键 词:向家坝  进水口边坡  有限元  系统锚杆  受力状况  
文章编号:1000-7598-(2006)03-0482-05
收稿时间:2004-01-05
修稿时间:2004-03-26

Mechanical analysis of systematic bolts on rock mass in high side slope at intake of Xiangjiaba Hydropower Station
PENG Zuo-wei,ZHOU Chuang-bing,GONG Yu-feng,KONG Jian.Mechanical analysis of systematic bolts on rock mass in high side slope at intake of Xiangjiaba Hydropower Station[J].Rock and Soil Mechanics,2006,27(3):482-486.
Authors:PENG Zuo-wei  ZHOU Chuang-bing  GONG Yu-feng  KONG Jian
Institution:School of Water Resources and Hydropower, Wuhan University, Wuhan 430072, China
Abstract:The maximum height of the intake side slope of Xiangjiaba Hydropower Station is 150 m. Systematic Bolts will be adopted to reinforce the rock mass. Because of the passivity action of systematic bolts and the heterogeneity of rock mass deforming, systematic bolts have different stress in different position. This paper analyzes the systematic bolts’ stresses on rock mass of high side slope of the intake in Xiangjiaba Hydropower Station by using elasto-viscoplastic finite element method. We can find the obvious laws from the calculation results that the bolt stress is larger in the rockmass which has larger displacement than in one which has less displacement. And the bolt stress increases with the excavation and anchorage progresses.
Keywords:Xiangjiaba Hydropower Station  high side slope at intake  FEM  systematic bolts  stress
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