Development of hyperbolic model for fully grouting rock bolt and parameters analysis for anchoring effect

被引：0
|
作者：
Yang, Qing [1 ,2 ]
Zhu, Xunguo [2 ]
Luan, Maotian [1 ,2 ]
机构：
[1] State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
[2] Institute of Geotechnical Engineering, School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China
来源：
Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | 2007年 / 26卷 / 04期
关键词：
Anchorages (foundations) - Elastic moduli - Grouting - Mathematical models - Pile foundations - Shear stress;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
According to local deformation theory, taking the action of rock mass against grouting rock bolt as a serious of spring, the shear resistance increases linearly with shear displacement between grouting mass and surrounding rock, and the hyperbolic model for grouting rock bolt has been developed on the base of rock bolt's force equilibrium. The distribution of shear resistance, axial force and shear stress density along the grouting rock bolt is obtained. From the shear stress and axial force of grouting rock bolt, the parameters affecting the anchoring effect have been analyzed. It is concluded that the larger the radial of rock bolt is, the greater the anchoring effect is; the greater the elastic modulus of rock bolt is, the better the anchoring effect is; and as the comprehensive parameter of grouting mass and surrounding rock increasing, the anchoring effect becomes better.
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页码：692 / 698
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