Analytical Study of the Mechanical Behavior of Fully Grouted Bolts in Bedding Rock Slopes

doi:10.1007/s00603-017-1244-9

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	Analytical Study of the Mechanical Behavior of Fully Grouted Bolts in Bedding Rock Slopes
	Liu, C. H.2; Li, Y. Z.1,2
刊名	ROCK MECHANICS AND ROCK ENGINEERING
	2017
卷号	50 期号:9 页码:2413-2423
关键词	Bedding rock slopes Fully grouted bolts Analytical approaches Transverse shear resistance Mechanical behavior
ISSN号	0723-2632
DOI	10.1007/s00603-017-1244-9
英文摘要	Bolting is widely used as a reinforcement means for rock slopes. The support force of a fully grouted bolt is often provided by the combination of the axial and shear forces acting at the cross section of the bolt, especially for bedding rock slopes. In this paper, load distribution and deformation behavior of the deflecting section of a fully grouted bolt were analyzed, and a structural mechanical model was established. Based on force method equations and deformation compatibility relationships, an analytical approach, describing the contribution of the axial and shear forces acting at the intersection between the bolt and the joint plane to the stability of a rock slope, was developed. Influence of the inclination of the bolt to the joint plane was discussed. Laboratory tests were conducted with different inclinations of the bolt to the joint plane. Comparisons between the proposed approach, the experimental data and a code method were made. The calculation results are in good agreement with the test data. It is shown that transverse shear resistance plays a significant role to the bolting contribution and that the bigger the dip of the bolt to the joint plane, the more significant the dowel effect. It is also shown that the design method suggested in the code overestimates the resistance of the bolt. The proposed model considering dowel effect provides a more precise description on bolting properties of bedding rock slopes than the code method and will be helpful to improve bolting design methods.
WOS研究方向	Engineering ; Geology
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000408918600010
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4132]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.Univ Chinese Acad Sci 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ;
推荐引用方式 GB/T 7714	Liu, C. H.,Li, Y. Z.. Analytical Study of the Mechanical Behavior of Fully Grouted Bolts in Bedding Rock Slopes[J]. ROCK MECHANICS AND ROCK ENGINEERING,2017,50(9):2413-2423.
APA	Liu, C. H.,&Li, Y. Z..(2017).Analytical Study of the Mechanical Behavior of Fully Grouted Bolts in Bedding Rock Slopes.ROCK MECHANICS AND ROCK ENGINEERING,50(9),2413-2423.
MLA	Liu, C. H.,et al."Analytical Study of the Mechanical Behavior of Fully Grouted Bolts in Bedding Rock Slopes".ROCK MECHANICS AND ROCK ENGINEERING 50.9(2017):2413-2423.