原文传递
Precast, prestressed concrete products for infrastructure
| 题名： | Precast, prestressed concrete products for infrastructure |
| 正文语种： | eng |
| 作者： | Stephen J. Seguirant;Richard Miller |
| 作者单位： | Concrete Technol-ogy Corp. in Tacoma Wash;Department of Civil and Environmental Engi-neering at the University of Cincinnati in Ohio |
| 关键词： | Bridge; deck; infrastructure; lifting loop; NCHRP; National Cooperative Highway Research Project; precast concrete; prestressed concrete; strand; UHPC; ultra-high-performance concrete |
| 摘要： | For decades, PCI-funded research has contributed significantly to the use of precast, prestressed concrete products for infrastructure, primarily bridges and waterfront structures. Some research projects have had a direct impact on the design of both superstructure and substructure components, while others have planted the seed for further, more extensive research. One Daniel P. Jenny Fellowship1 that had a direct impact on bridge design was the development of the NU prestressed concrete Ⅰ-girder series in Nebraska. Concurrent with the advancement of high-strength concrete and larger-diameter prestressing strands, these girder sections are significantly more efficient than their forerunners. This research also served as the starting point for development of the WF Ⅰ-girder series in Washington State.2 In some cases, the increased efficiency of these sections has reduced the required number of girders in a given bridge compared with the older girder sections of the same span and depth. Obtainable pretensioned concrete Ⅰ-girder lengths have also increased up to the current maximum of 223 ft (68 m). Other states have also adopted girder sections of similar proportions as local standards. |
| 出版年： | 2023 |
| 期刊名称： | PCI Journal |
| 卷： | 68 |
| 期： | 3 |
| 页码： | 32-34 |
检索历史
应用推荐
