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Design and field testing of jointless bridges.

机译:无缝桥的设计和现场测试。

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摘要

A recent trend in bridge design has been toward elimination of joints and bearings in the bridge superstructure. These joints and bearings are expensive in both initial and maintenance costs, and can get filled with debris, freeze up and fail in their task to allow expansion and contraction of the superstructure. They are also a "weak link" that can allow deicing chemicals to seep down and corrode bearings and support components. Because the design is difficult and their behavior is unknown, they are not widely used despite the enormous benefits. There are no standardized design procedures for these bridges, only a list of specifications is available. To address this, three bridges were statically load tested every three months for a period of two and a half years. Field data from these tests were used to make recommendations to current design procedures. Design recommendations based on experimental data are given in the form of a design example.
机译:桥梁设计的最新趋势是消除桥梁上部结构中的接缝和轴承。这些接头和轴承在初始和维护成本上都很昂贵,并且会充满碎屑,结冰并且无法完成允许上层建筑膨胀和收缩的任务。它们也是“弱环节”,可以使除冰剂渗入并腐蚀轴承和支撑部件。由于设计困难并且其行为未知,因此尽管具有巨大的优势,但并未广泛使用它们。这些桥没有标准化的设计程序,仅提供一系列规格。为了解决这个问题,每三个月对三个桥进行静载荷测试,为期两年半。这些测试的现场数据用于为当前设计程序提供建议。基于实验数据的设计建议以设计示例的形式给出。

著录项

  • 作者

    Franco, Jason Matthew.;

  • 作者单位

    West Virginia University.;

  • 授予单位 West Virginia University.;
  • 学科 Engineering Civil.
  • 学位 M.S.
  • 年度 1999
  • 页码 209 p.
  • 总页数 209
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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