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首页> 外文学位 >Laboratory testing of precast bridge deck panel transverse connections for use in accelerated bridge construction.
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Laboratory testing of precast bridge deck panel transverse connections for use in accelerated bridge construction.

机译：用于加速桥梁建设的预制桥梁甲板面板横向连接的实验室测试。

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摘要

Precast concrete bridge deck panels have been used for decades to accelerate bridge construction. Cracking of the transverse connection between panels is a common problem that can damage deck overlays and cause connection leaking leading to corrosion of lower bridge elements.;To better understand the behavior of bridge deck transverse female-to-female connections, shear and moment lab testing were performed at Utah State University for the Utah Department of Transportation. Two existing UDOT connections were tested, a welded stud connection and a post tensioned connection. A variation of the welded connection using rebar was also tested. In addition, two new curved bolt connections were tested as a new method of post tensioning a connection. The manner of connection cracking and associated cracking loads were recorded along with the ultimate connection capacities. The connections were also tested in a low cycle, high amplitude cyclical shear test.;Lab testing showed that the welded stud connection had the lowest moment capacity. It also showed that the welded rebar connection had significantly higher strength than the welded stud connection with higher cracking and ultimate loads. Curved bolts were also shown to be a good way to post tension a connection with similar moment capacities as the post tensioned connection. Longer curved bolts were found to perform better than shorter curved bolts.
机译：预制混凝土桥面板已经使用了数十年，以加速桥梁建设。面板之间的横向连接破裂是一个常见的问题，它可能会损坏桥面覆盖层并导致连接泄漏，从而导致下部桥梁元件的腐蚀。为了更好地了解桥面板横向母对母连接，剪切和弯矩试验的性能在犹他州立大学交通部进行。测试了两个现有的UDOT连接，焊接螺柱连接和后张紧连接。还测试了使用钢筋的焊接连接的变化形式。此外，还测试了两个新的弯曲螺栓连接，作为后张紧连接的新方法。记录连接开裂的方式和相关的开裂载荷以及极限连接能力。还通过低循环，高振幅循环剪切试验对连接进行了测试。实验室测试表明，焊接螺柱连接具有最低的矩承载力。这也表明，焊接钢筋连接的强度明显高于焊接螺柱连接，具有更高的开裂和极限载荷。还显示了弯曲螺栓是一种以与后张紧连接类似的力矩承载力来过张连接的好方法。发现较长的弯曲螺栓比较短的弯曲螺栓性能更好。

著录项

  • 作者

    Porter, Scott D.;

  • 作者单位

    Utah State University.;

  • 授予单位 Utah State University.;
  • 学科 Engineering Civil.
  • 学位 M.S.
  • 年度 2009
  • 页码 77 p.
  • 总页数 77
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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