Abstract： Series of constant amplitude fatigue loading tests were carried out on two types of CFRP tendon bonded anchorage systems. The influence of load ratio on fatigue response was investigated by backside strain technology. The prediction model of fatigue damage for the systems with constant amplitude load was deduced based on Goodman equation. The effect of load ratio on fatigue behavior of bonded anchors was investigated by experimental and numerical approaches. The results show that the prediction data are in good agreement with the experimental data. The change of back strain in the fatigue process of bonded anchorage system can well reflect the fatigue damage in the anchorage system, which proves that the back strain gauge technology is suitable for the bonded anchorage system. The fatigue damage model based on backside strain technology can reasonably simulate the effect of load ratio on fatigue response of bonded anchorage systems.
2019, Vol. 40 
