Laboratory Experimental Study on Pullout Behavior of Mortar Grouted GFRP Soil Nails

Zhong Yu Liu; Chong Wu Ma; Zhuo Zhao

doi:10.4028/www.scientific.net/AMR.168-170.1069

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 168-170Laboratory Experimental Study on Pullout Behavior...

Laboratory Experimental Study on Pullout Behavior of Mortar Grouted GFRP Soil Nails

Abstract:

A large-scale laboratory apparatus has been built to study the pullout behavior of mortar grouted glass fiber reinforced polymer (GFRP) soil nails. The axial strain along the nail length and the displacement of the nail head under different pullout loads are measured, and the ultimate pullout load under the overburden pressure is obtained. Then, the influence of the overburden pressure on the ultimate value of the interface friction force is investigated. The experimental results illustrate that the pullout behavior of mortar grouted GFRP soil nails is similar to that of mortar grouted steel soil nails, and the relation between the displacement and the pullout load can be described with the hyperbolic function. In addition, the dilatancy effect of the soil near the nail during pull out should be taken into account in estimating the pullout resistance of soil nails in dense fills.

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Periodical:

Advanced Materials Research (Volumes 168-170)

Pages:

1069-1072

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.168-170.1069

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Online since:

December 2010

Authors:

Zhong Yu Liu, Chong Wu Ma, Zhuo Zhao

Keywords:

Dilatancy, Glass Fiber Reinforced Polymer (GFRP), Laboratory Experiment, Pullout Resistance, Soil Nailing

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