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Developing rating aids for the evaluation of concrete culverts in Tennessee.

机译：开发用于评估田纳西州混凝土涵洞的评估工具。

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摘要

This thesis overviews the procedures and findings of a project, funded by the Tennessee Department of Transportation (TDOT), consisting of load rating all of the existing concrete culverts in Tennessee and performing a parametric study on said culverts. Currently, many of these culverts are in poor condition and need to be evaluated for their structural capacity. Furthermore, federal regulations now require that all transportation highway structures be load rated for their live load carrying capacity. The culverts were obtained from TDOT's library of standard drawings. Over 1,000 standard culvert drawings were received, modeled and load rated. Many of the culverts rated low for shear in the top and bottom slabs but with the results from previous research this does not cause great concern. It was found that slab culverts generally rated higher than similarly sized box culverts. Fill depth was found to have the greatest impact on rating factors while the culvert dimensions did not seem to have any correlation with the rating factors. One of the main objectives of this research was to develop rating aids such as rating tables and structural rating models for the evaluation of concrete box culverts in Tennessee. Two Excel spreadsheet documents were created to store and organize all the rating factors calculated. These rating aids will greatly benefit the bridge evaluators who use them to continue the work of rating the culverts in Tennessee. At the end of this research there are a few recommendations for future work. First, it is recommended that more work be done on shear in culverts. Second, alternate live loads could be investigated for culverts that had low rating factors. Third, alternate formats for the rating aids could be explored.
机译：本文概述了由田纳西州运输部（TDOT）资助的项目的程序和发现，该项目包括对田纳西州所有现有混凝土涵洞的额定荷载，并对这些涵洞进行参数研究。目前，这些涵洞中许多处于不良状态，需要对其结构能力进行评估。此外，联邦法规现在要求所有运输公路结构均应按其实际载荷承载能力进行额定载荷。涵洞来自TDOT的标准图纸库。接收，建模和额定载荷超过1,000个标准涵洞图。在顶板和底板中，许多涵洞的抗剪强度均较低，但是根据先前的研究结果，这并不引起人们的关注。结果发现，平板涵洞通常比类似尺寸的箱涵更高。人们发现，填土深度对额定系数影响最大，而涵洞尺寸似乎与额定系数没有任何关系。这项研究的主要目的之一是开发用于评估田纳西州混凝土箱涵的等级评定工具，例如等级评定表和结构等级评定模型。创建了两个Excel电子表格文档，以存储和组织所有计算的评分系数。这些评级辅助工具将极大地有益于桥梁评估人员，他们可以使用它们继续对田纳西州的涵洞进行评级。在本研究的最后，有一些关于未来工作的建议。首先，建议对涵洞的剪切进行更多的工作。第二，可以对额定系数低的涵洞进行交替活荷载研究。第三，可以探索辅助评级的替代格式。

著录项

  • 作者

    Jones, Caleb Edward.;

  • 作者单位

    Tennessee Technological University.;

  • 授予单位 Tennessee Technological University.;
  • 学科 Engineering Civil.;Transportation.
  • 学位 M.S.
  • 年度 2013
  • 页码 179 p.
  • 总页数 179
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 地下建筑;
  • 关键词

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