原文传递
Threaded rod continuity for bridge deok weight
| 题名： | Threaded rod continuity for bridge deok weight |
| 正文语种： | 英文 |
| 作者： | Chuanbing Sun;Ning Wang;Maher K. Tadros;Amgad F. M. Girgis;Fouad Jaber |
| 作者单位： | Civil Aviation University of China;University of Nebraska-Lincoln;USA LLC in Omaha |
| 关键词： | Bridge; continuity; girder; high-performance concrete; I-girder; threaded rod continuity system. |
| 摘要： | Precast, prestressed I-girder bridges are generally designed as simple spans for the girder self-weight and deck weight and continuous spans for superimposed dead and live loads. Because the superimposed loads are only about one-third of the total load, structural efficiency can be further improved if continuity is achieved for the deck weight. This paper presents a threaded rod continuity system to make precast concrete girders continuous for the deck weight without resorting to posttensioning. The threaded rod continuity system can increase bridge span capacity from 10% to 15% and essentially eliminate possible cracking at the bottom fiber of the pier diaphragm. The threaded rod continuity system allows precast concrete to compete favorably with steel in long-span highway bridges. This paper covers the historical development of the threaded rod continuity system. This paper also includes design criteria, experimental tests, design procedures, system implementation, and a numerical example. |
| 出版日期： | 2016.05-06 |
| 出版年： | 2016 |
| 期刊名称： | PCI-Prestressed Concrete Institute Journal |
| 卷： | Vol.61 |
| 期： | No.03 |
| 页码： | 47-67 |
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