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首页> 外文会议>International conference on sustainable development of critical infrastructure 2014 >Reliability Assessment of RC Structures Subjected to Carbonation by Incorporating Spatial Variations
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Reliability Assessment of RC Structures Subjected to Carbonation by Incorporating Spatial Variations

机译：纳入空间变化的碳化碳化混凝土结构的可靠性评估

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摘要

When carbonation reaches the depth of the rebar embedded into the concrete, the high alkalinity of the concrete pore solution is neutralised and hydration products are dissolved. As carbonation progresses, the corrosion could extend enough to deteriorate the structural performance. In this paper, a time-dependent structural reliability analysis method taking the carbonation into consideration is proposed. To predict the corrosion process of reinforced concrete (RC) structures, spatial variability of corrosion has to be considered. A computational procedure to integrate the spatial variability of corrosion due to carbonation into life-cycle reliability assessment of existing RC structures is established. An illustrative example of a RC structure subjected to carbonation is presented. The emphasis is placed on investigating the effects of the spatial variation of inspected carbonation depths on the reliability estimates of RC structures.
机译：当碳化作用达到埋入混凝土中的钢筋的深度时，混凝土孔隙溶液的高碱度被中和，水合产物溶解。随着碳化的进行，腐蚀可能会扩展到足以破坏结构性能的程度。提出了一种考虑碳化的时变结构可靠性分析方法。要预测钢筋混凝土（RC）结构的腐蚀过程，必须考虑腐蚀的空间变异性。建立了将碳化引起的腐蚀的空间变异性集成到现有RC结构的生命周期可靠性评估中的计算程序。给出了经受碳化的RC结构的说明性实例。重点放在调查所检查的碳化深度的空间变化对RC结构可靠性估计的影响上。

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  • 会议地点 Shanghai(CN)
  • 作者

    T. Hagino; M. Akiyama; Dan M. Frangopol;

  • 作者单位

    Department of Civil and Environmental Engineering, Waseda University, Okubo 3-8, Shinjuku-Ku, Tokyo Tokyo 169-855, JAPAN;

    Department of Civil and Environmental Engineering, Waseda University, Okubo 3-8, Shinjuku-Ku, Tokyo Tokyo 169-855, JAPAN;

    Department of Civil and Environmental Engineering, ATLSS Engineering Research Center, Lehigh University, 117 ATLSS Drive, Bethlehem, PA 18015-4729, USA;

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