Study on mechanism of prestressed anchor bolt

被引：0
|
作者：
Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China [1 ]
不详 [2 ]
机构：
来源：
Yanshilixue Yu Gongcheng Xuebao | 2006年 / 9卷 / 1876-1880期
关键词：
Anchors - Deformation - Foundations - Grouting - Mathematical models - Prestressed materials - Rocks - Shear strength - Shear stress - Slope stability;
D O I：
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学科分类号：
摘要：
Prestressed rock bolts have been widely used for rock reinforcement in slope engineering. Bolts reinforce rock masses through restraining the deformation within the rock masses. In order to improve bolting design, it is necessary to have a good understanding of behavior of prestressed rock bolts in slope engineering. An analytical model is proposed to predict the shear distribution of prestressed grouted rock bolt. The interaction mechanism of rock bolt and around rock mass has been described according the axisymmetric elastic problem and constitution law of interface of rock bolt and rock mass. Coupling and uncoupling behaviors of interface have been analyzed. According to case studies, the theoretical results show that the shear distribution is related to properties of rock mass, rock bolt and grouted materials; and the region that exist shear stress is very short. The conclusions can be used for prestressed rock bolt design.
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