Fatigue Properties Of Reinforced Concrete Structures In Corrosive Environments

Differencet environment factors impact on the fatigue behavior of the reinforced concrete structure. The environmental factors which impact on the fatigue behavior of the reinforced concrete structure includ corrosion, temperature and freeze-thaw cycle. Therefore, when we research the fatigue behavior of the reinforced concrete structures we need to consider environmental factors. At present, the research in domestic and international has just begun. In this paper,the fatigue behavior which is made by the damage of the reinforced concrete material which is caused by the main environmental factors is initial explored.Major ones are as follows:1. The law of the impact of the fatigue behavior of the reinforced concrete material and bonding properties was researched. Summed up the estimation model of fatigue life of steel bars and bonding strength which is impacted by corrosion rate. Proposed the estimation model of the concrete strength and bonding strength which is impacted by fatigue load and corrosion.2. The fatigue law that corrosion environment impacts on the reinforced concrete beams was discussed with useing the fatigue calculation method in the norm and the model has been.Discussed the estimation method of the fatigue of the reinforced concrete beams,and get it.3. Discussed the gray theory which is used in estimating the fatigue life of the reinforced concrete beams under the corrosion environment , and get the estimation method.4. Summed up the probability distribution which is used in fatigue reliability analysis. Discussed calculation method of the reliability of the concret under the corrosion environment,and get it.5. Summed up damage theory of fatigue. Discussed the calculation method of the the reinforced concrete beams under the corrosion environment ,and get the corrosion damage theory of fatigue.