| Analytical large deformation shear strength for bolted rough discontinuous rock |
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| 作者姓名： | 刘波 陶龙光 岳中琦 |
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| 作者单位： | [1]DepartmentofCivilEngineering,ChinaUniversityofMining＆Technology（Beijing）,Beijing100083,China [2]DepartmentofCivilEngineering,TheUniversityofHongKong,HongKongChina |
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| 基金项目： | Supported by National Nature Science Foundation of China (50304012) and the ?73?Program of China (2002CB412701) |
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| 摘 要： | Presented a new analytical model for studying the shear-tensile large deformation behavior near the vicinity of joint interface for bolted rough discontinuous rock, and presented the formulation estimating global shear strength for bolted joints under shearing-tensile loads. The analytical strength curves of bolts contribution on reinforced discontinuous rocks as the function of joint displacements or deformation angle of a bolt at rock joints was obtained. Based on Barton‘s equation on JRC roughness profiles, the theoretical shearing strength of bolted rough joints was also established. Test results on bolted granite and marble specimen confirm the validity of the analytical approach.
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| 关 键 词： | 大变形 剪切强度 岩石节理 分析模型 锚杆支护 |
Analytical large deformation shear strength for bolted rough discontinuous rock |
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| LIU Bo ,TAO Long-guang ,YUE Zhong-qi.Analytical large deformation shear strength for bolted rough discontinuous rock[J].Journal of Coal Science & Engineering(China),2004,10(1):24-28. |
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| Authors: | LIU Bo TAO Long-guang YUE Zhong-qi |
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| Affiliation: | LIU Bo 1,TAO Long-guang 1,YUE Zhong-qi 2 |
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| Abstract: | Presented a new analytical model for studying the shear-tensile large deforma-tion behavior near the vicinity of joint interface for bolted rough discontinuous rock, and presented the formulation estimating global shear strength for bolted joints under shear-ing-tensile loads. The analytical strength curves of bolts contribution on reinforced discon-tinuous rocks as the function of joint displacements or deformation angle of a bolt at rock joints was obtained. Based on Barton's equation on JRC roughness profiles, the theoreti-cal shearing strength of bolted rough joints was also established. Test results on bolted granite and marble specimen confirm the validity of the analytical approach. |
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| Keywords: | bolt rough rock joints large strain deformation shear strength analytical model |
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