IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2016  > Vol13 No.12
Analytical analysis of pullout resistance of the hydraulic expansion rockbolts on a frictionally coupled model
Sejin KIM; Heejung YOUN; Kyoungchul KIM
Corresponding AuthorKyoungchul KIM
2016-12
Source PublicationJournal of Mountain Science
ISSN1672-6316
Volume13Issue:12Pages:2249-2259
Subtype期刊论文
AbstractThis paper proposes an empirical formula to estimate the shear strength of hydraulic expansion rockbolts. The field experimental results were obtained from eleven pullout tests to evaluate the results computed by the proposed formula.It was found that shear resistance of hydraulic expansion rockbolts significantly depends on the uniaxial compressive strength and elastic modulus of rock, with high correlation coefficients of 0.7651 and 0.8587, respectively. The developed formula enables estimation of the maximum pullout load in an analytical process without pullout tests in the field. Conversely, due to the poor interlocking at the initial pullout load, the measureddisplacements were higher than the estimated ones. To reduce the interlocking effects between bolt and rock, we recommendpreloading of 29.4kN. Preload allows reducing the distance between the measured and estimated displacement and making two load-displacement curves practically identical with marginal differences of 1.1 to 1.5mm at the maximum pullout load.
KeywordExpansion Rockbolt Pullout Resistance Pullout Load Shear Strength
DOI10.1007/s11629-015-3708-2
Indexed BySCI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/17835
CollectionJournal of Mountain Science_Journal of Mountain Science-2016_Vol13 No.12
Recommended Citation
GB/T 7714
Sejin KIM,Heejung YOUN,Kyoungchul KIM. Analytical analysis of pullout resistance of the hydraulic expansion rockbolts on a frictionally coupled model[J]. Journal of Mountain Science,2016,13(12):2249-2259.
APA Sejin KIM,Heejung YOUN,&Kyoungchul KIM.(2016).Analytical analysis of pullout resistance of the hydraulic expansion rockbolts on a frictionally coupled model.Journal of Mountain Science,13(12),2249-2259.
MLA Sejin KIM,et al."Analytical analysis of pullout resistance of the hydraulic expansion rockbolts on a frictionally coupled model".Journal of Mountain Science 13.12(2016):2249-2259.
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