FINITE-ELEMENT ANALYSIS OF FAILURE RESPONSE BEHAVIOR OF ANCHOR BOLTS IN CONCRETE

Computational failure simulations of axi-symmetric pull-out tests are presented. At the material level, a fracture energy-based plasticity f ormulation for concrete, the Extended Leon Model, is considered. The f ailure mechanism is extensively analysed. The results indicate that th e biaxial compression stress state of the concrete near the reaction r ing is the main responsible for the ductile behavior observed in the l ast part of the deformation history of the pull-out test. On the other hand, the decisive influence of the concrete compression strength on the failure behavior and on the limit load is demonstrated. Beyond the se important conclusions, the results demonstrate the predictive capab ilities of the material model in the framework of finite element analy ses. (C) 1998 Published by Elsevier Science S.A. All rights reserved.