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首页> 外文期刊>Journal of Infrastructure Systems >Factors Affecting Life-Cycle Cost Analysis of RC Structures in Chloride Contaminated Environments
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Factors Affecting Life-Cycle Cost Analysis of RC Structures in Chloride Contaminated Environments

机译：氯化物污染环境中RC结构生命周期成本分析的影响因素

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摘要

Corrosion of reinforcing steel is the main course of deterioration of reinforced concrete (RC) structures in chloride contaminated environments. Various measures can be employed to protect RC structures against corrosion and to improve their durability. Efficiency of these measures can be compared using life-cycle cost analysis. The present paper examines the influence of different sources of uncertainty associated with modeling corrosion initiation and propagation (and corresponding structural damage) on results of life-cycle cost analysis, in particular, on estimated cost of failure. Serviceability failure due excessive cracking is considered. The considered sources of uncertainty include uncertainties associated with time-dependent modeling surface chloride content and chloride diffusion coefficient, prediction of threshold chloride concentration and corrosion rate, and modeling crack initiation and propagation.
机译：钢筋腐蚀是氯化物污染环境中钢筋混凝土（RC）结构劣化的主要过程。可以采用各种措施来保护RC结构免受腐蚀并提高其耐久性。可以使用生命周期成本分析来比较这些措施的效率。本文研究了与腐蚀开始和扩展（以及相应的结构破坏）建模相关的不同不确定性源对生命周期成本分析结果的影响，特别是对估计的失效成本的影响。考虑由于过度开裂而导致的可服务性故障。所考虑的不确定性来源包括与时间相关的表面氯化物含量和氯化物扩散系数的建模相关的不确定性，氯离子浓度和腐蚀速率阈值的预测以及裂纹萌生和扩展的建模。

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