Finite element modelling of pullout testing on a soil nail in a pullout box under different overburden and grouting pressures
Zhou W.-H.1; Yin J.-H.2; Hong C.-Y.2
2011-04-01
Source PublicationCanadian Geotechnical Journal
ISSN00083674 12086010
Volume48Issue:4Pages:557-567
Abstract

In this paper, a three-dimensional (3D) finite element (FE) model is developed to simulate the pullout behaviour of a soil nail in a soil-nail pullout box under different overburden and grouting pressures. The FE model simulates all the procedures of a pullout test on a grouted soil nail in a compacted and saturated completely decomposed granite (CDG) soil. The stress-strain behaviour of the CDG soil is described by a modified Drucker-Prager/Cap model, while that of the soil-nail interface is represented by the Coulomb friction model. Triaxial experiment data are used to calibrate the soil parameters in the soil constitutive model. The interface parameters are determined from back-analysis with the laboratory soil-nail pullout data. The soil stress variations surrounding the soil nail during drilling, grouting, saturation, and pullout are all well simulated by the FE modelling and compared with available test data. The comparisons between the modelling and experimental data have shown that the established FE can well simulate the pullout behaviour of a soil nail in a soil mass. Based on this, the verified FE model has the potential to simulate the performance of a soil nail in a field soil slope.

KeywordFinite Element Grouting Pressure Overburden Pressure Pull-out Resistance Slope Soil Nailing
DOI10.1139/t10-086
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000291325700004
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Citation statistics
Cited Times [WOS]:37   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Affiliation1.Universidade de Macau
2.Hong Kong Polytechnic University
Recommended Citation
GB/T 7714
Zhou W.-H.,Yin J.-H.,Hong C.-Y.. Finite element modelling of pullout testing on a soil nail in a pullout box under different overburden and grouting pressures[J]. Canadian Geotechnical Journal,2011,48(4):557-567.
APA Zhou W.-H.,Yin J.-H.,&Hong C.-Y..(2011).Finite element modelling of pullout testing on a soil nail in a pullout box under different overburden and grouting pressures.Canadian Geotechnical Journal,48(4),557-567.
MLA Zhou W.-H.,et al."Finite element modelling of pullout testing on a soil nail in a pullout box under different overburden and grouting pressures".Canadian Geotechnical Journal 48.4(2011):557-567.
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