Simulation Analysis of Chemically Bonded Anchors in ABAQUS

Abstract:

At present, the finite element analysis has been an effective method to study the mechanical properties of steel bar drawing. In this paper, finite element analysis of the influence of bond strength on anchorage performance with concrete plastic damage model based on nonlinear analysis in ABAQUS was carried out. The finite-element analysis model of the single bar was established by using the finite element software ABAQUS. The Spring2 nonlinear spring element was introduced to simulate the interface of concrete and adhesive. Chemical anchorage bond slip constitutive model was determined by Spring2 element real constants. The nonlinear characteristics of concrete materials under the single reinforcement drawing could be described with the combination of the concrete plastic damage constitutive mode and nonlinear finite element methods. The nonlinear behavior of concrete under uniaxial tension of the action, especially the crack and stress distribution, could be accurately described. In order to study the influence of adhesive bond strength of chemically-bonded rebar mechanical properties, the constitutive relation of the bonded rebar slip of test results was referenced. The nonlinear property of spring was assigned by the bond slip relationship, embodied in the F-D curve of the spring. In order to analysis the influence of bond strength on anchorage performance, the slope of linear growth stage and the peak of nonlinear growth stage in bond slip relationship curve were changed.

• Periodical: Key Engineering Materials (Volume 744)
• Pages: 174-178
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.744.174
• Online since: July 2017
• Authors: Tian Jiao Chen, Yong Quan Wang*, Wahab Abdul Ghafar
• Keywords: Bond Strength, Chemical Anchorage, Concrete Damage Plasticity Model, Finite Element Method

References

[1] R. A. Cook, F. E. Fagundo, M. H. Biller, D. E. Richardson, Tensile behavior and design of single adhesive anchor, Structures and materials Research Report No. 91-3, Univ. of Florida, Gainesville, Fla, (1991).

[2] J. Zhang, Q. Y. Wang, S. Y. Hu, C. J. Wang. Parameter verification of concrete plastic damage model of ABAQUS, Build. Struct. 08 (2008) 127-130.

[3] R. B. Shu, Study on the mechanism of stress and anchorage system bond slip performance, Tongji University, (2008).