原文传递
Restoring a collapsed span over the Skagit River
| 题名： | Restoring a collapsed span over the Skagit River |
| 其他题名： | 1.Faulds,I.,J.McClain,I.Booth,and C.Jurado.2013."Canadian Shoppers in Northwest Washington State."Working paper no.6.Bellingham,WA:Border Policy Research Institute Western Washington University. |
| 正文语种： | 英文 |
| 作者： | Christopher M. Vanek |
| 关键词： | Accelerated bridge construction;camber;connection;decked bulb tee;design-build;lightweight concrete;posttension;repair;silica-fume concrete |
| 摘要： | A semitrailer hit several overhead steel truss members of the Interstate 5 (1-5) bridge over the Skagit River in Washington State, causing the north span to collapse. An emergency design-build contract required reopening of the permanent replacement span within 90 days of notice to proceed. Precast, prestressed concrete decked bulb tees of sand-lightweight concrete and full flexure-shear flange connections kept the weight of the superstructure within 5％ of that of the original steel superstructure, allowing the undamaged substructure to be reused. Careful control of the girder geometry maintained vertical clearance over the Skagit River. Temporary posttensioning enabled the girders to resist construction-induced stresses. The replacement span was assembled alongside the existing bridge and skidded into place during a single 19-hour closure of 1-5. |
| 出版年： | 2015 |
| 论文唯一标识： | J-30Y2015V60N01065 |
| 期刊名称： | PCI-Prestressed Concrete Institute Journal |
| 拼音刊名(出版物代码)： | J-30 |
| 卷： | 60 |
| 期： | 01 |
| 页码： | 52-57,59-60,62-65 |
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