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Numerical Approach for the Mechanical Behavior of Fully Grouted Anchorage System Subjected to Pullout Test
Dunhua Lu Department of Resources and Environmental Engineering, Henan Institute of Engineering, Zhengzhou, 451191, Henan, China
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ABSTRACT |
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Numerical Approach for the Mechanical Behavior of Fully Grouted Anchorage System Subjected to Pullout Test
Dunhua Lu Department of Resources and Environmental Engineering, Henan Institute of Engineering, Zhengzhou, 451191, Henan, China
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ABSTRACT |
Anchorage system has been applied in many engineering projects, such as slope strengthening, tunnel supporting and mining. Different mechanical models of anchorage system have been built. But the numerical simulation for the anchorage system pullout tests has seldom been done. In this paper, a numerical approach able to predict the mechanical behaviour of anchor subjected to pull-out tests is proposed. The mechanism of the anchor system is given, input parameters of such approach are: anchor geometry size, anchor’s Young modulus, anchor’s Poisson’s ratio, and the constitutive law of the anchor-grout-soil interface with their parameters: friction angle, cohesion, shear stiffness and normal stiffness. Numerical solutions for the following aspects are done: distribution of anchor axial stress, response of the soil, the effect of the surrounding stress to the limit anchoring force, and the effect of the anchor length to the limit anchoring force.
Keywords: Anchorage system; anchor; pullout test; numerical; simulation; interaction, mechanism.
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