Shearing strength of single structural surface of grouted rock mass

被引：0
|
作者：
Zheng Z. [1 ]
Li S. [1 ]
Liu R. [1 ]
Zhang S. [1 ]
Li X. [1 ]
Wang X. [1 ]
机构：
[1] Geotechnical and Structural Engineering Research Center, Shandong University, Jinan, 250061, Shandong
来源：
Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | 2016年 / 35卷
关键词：
Fractured rock; Grouting reinforcement; Rock mechanics; Shearing strength; Structural surface;
D O I：
10.13722/j.cnki.jrme.2015.1445
中图分类号：
学科分类号：
摘要：
To evaluate grouting reinforcement strength of single fracture surface, shearing failure mechanism of structural surface and coupling effect between cohesion force and friction force was analyzed. Shearing tests was conducted for regular saw-tooth structural surface. Anisotropy of surface roughness and its characterization methods was analyzed. According to the relationship between shearing direction and micro asperity of the structural surface, a conception of cohesion controlling area and friction controlling area was proposed. Based on failure criterion for non-cohesion structural surface and mechanism of cohesion force, a formula was established for shearing strength on one single surface of grouted rock. Calculation shows cohesion force is influenced by the asperity of surface roughness. Grouting reinforcement increases shearing strength of structural surface along all direction, while the asperity of shearing strength still exists. Research results may provide a method for evaluation on grouting reinforcement of fractured rock. © 2016, Science Press. All right reserved.
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页码：3915 / 3922
页数：7
相关论文
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