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Innovative precast concrete adjacent-box-beam system implemented in the St. Clair Road bridge in Michigan
| 题名： | Innovative precast concrete adjacent-box-beam system implemented in the St. Clair Road bridge in Michigan |
| 其他题名： | 1.PCI Bridge Design Manual Steering Committee.2011.PCI Bridge Design Manual.MNL-133.3rd ed.,Chicago,IL:PCI. |
| 正文语种： | 英文 |
| 作者： | Chuanbing S. Sun |
| 关键词： | Adjacent-box-beam bridge;beam;bridge;crack;post-tensioning;reflective cracking;transverse post-tensioning;unbonded post-tensioning |
| 摘要： | The St. Clair Road bridge over the Maple River in Clinton County, Mich., uses an innovative unbonded post-tensioning system in precast concrete adjacent box beams that eliminates the need for grouting post-tensioning ducts and for a cast-in-place concrete deck slab, resulting in accelerated bridge construction. The transverse unbonded post-tensioning tendons in both the top and bottom flanges of the beams eliminate the need for intermediate diaphragms. More important, this system enhances the overall structural performance by eliminating reflective cracks above the longitudinal joints because the joints are in permanent compression. As a result, it will likely reduce long-term costs by potentially reducing the frequency of repairs and maintenance. |
| 出版年： | 2018 |
| 论文唯一标识： | J-30Y2018V63N03048 |
| 英文栏目名称： | Bridges |
| 期刊名称： | PCI-Prestressed Concrete Institute Journal |
| 拼音刊名(出版物代码)： | J-30 |
| 卷： | 63 |
| 期： | 03 |
| 页码： | 41-50 |
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