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Development of procedures for monitoring and predicting the long-term performance of continuously reinforced concrete pavements.

机译：制定程序来监测和预测连续钢筋混凝土路面的长期性能。

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摘要

This dissertation documents a long-term performance study of continuously reinforced concrete pavement (CRCP). The final result consists of models to predict the probability of survival of a CRCP, from visual condition survey data. The models were obtained using a data base consisting of 747 CRCP test sections, and they were calibrated using Survival Analysis, a theoretically sound method to estimate the reliability function of a structure or a device. The use of Survival Analysis in pavement performance studies was still unexplored, and it gave good results, in spite of the fact that only 91 sections had reached failure.; During the model calibration process, the significance of several variables affecting pavement performance was tested. Among these variables were the elastic modulus of the P.C. concrete and the modulus of reaction on top of subbase, obtained by back-calculation from deflection data. In the case of rigid pavements, this back calculation can be done by inverse application of either plate or layered theory. Since no comparison between both approaches was found in the literature by the time this part of the study was being done, the parameters were back-calculated with both layered and plate theory. A significant discrepancy was found between the results, and its possible causes were analyzed.; It is felt that the most important contributions of this study reside in the redefinition of the problem of predicting pavement performance, and in the innovative and theoretically sound technique applied to develop the models. The analyses of the problems of restricted inference spaces for and of error propagation in pavement performance studies draw attention to a crucial limitation suffered by most pavement performance models, which is often overlooked and practically impossible to remove.; It is thought that the findings of this study can contribute to a better understanding of CRCP deterioration. It is felt that the data collection procedures and the data base developed in this study can be useful for many other research studies in the future, and it is recommended that future attempts to calibrate pavement performance models that capture the reliability be done with the statistical approach used in this study.
机译：本文记录了连续钢筋混凝土路面的长期性能研究。最终结果包括根据视觉状况调查数据预测CRCP存活可能性的模型。这些模型是使用由747 CRCP测试部分组成的数据库获得的，并使用了Survival Analysis（一种理论上合理的方法来估计结构或设备的可靠性函数）进行校准。尽管只有91个断面已经失效，但仍未探索在路面性能研究中使用“生存分析”的方法，并且它给出了良好的结果。在模型校准过程中，测试了影响路面性能的几个变量的重要性。这些变量中有P.C的弹性模量。通过挠度数据的反算获得混凝土和基层顶部的反应模量。在刚性路面的情况下，可以通过逆向应用板式理论或分层理论来进行反向计算。由于在研究的这一部分完成时在文献中没有发现两种方法之间的比较，因此使用分层理论和板理论对参数进行了反算。结果之间存在显着差异，并分析了可能的原因。可以认为，这项研究的最重要贡献在于重新定义了预测路面性能的问题，以及用于开发模型的理论上合理的创新技术。对路面性能研究中的受限推理空间和误差传播问题的分析引起了人们对大多数路面性能模型所遭受的关键限制的关注，该限制通常被忽略并且实际上无法消除。据认为，这项研究的结果可以有助于更好地了解CRCP恶化。人们认为，本研究中开发的数据收集程序和数据库将来可能对许多其他研究有用，并且建议将来尝试使用统计方法来校准捕捉可靠性的路面性能模型的尝试。在这项研究中使用。

著录项

  • 作者

    Weissmann, Angela Jannini.;

  • 作者单位

    The University of Texas at Austin.;

  • 授予单位 The University of Texas at Austin.;
  • 学科 Engineering Civil.
  • 学位 Ph.D.
  • 年度 1989
  • 页码 183 p.
  • 总页数 183
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 建筑科学;
  • 关键词

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