原文传递
MEASUREMENT-BASED PERFORMANCE EVALUATION
OF A SEGMENTAL CONCRETE BRIDGE
| 题名： | MEASUREMENT-BASED PERFORMANCE EVALUATION OF A SEGMENTAL CONCRETE BRIDGE |
| 作者： | Rodney T. Davis, M. Keith Thompson, Bryan A. Wood, John E. Breen, and Michael E. Kreger |
| 关键词： | Held measurements, precast concrete piers, segmental bridges, bridge instrumentation, thermal gradients, live load tests, strut-and-tie models, local zones, post-tensioning, losses, external tendons, cantilever erection. |
| 摘要： | Construction of around 10km of the US 183 elevated highway in Austin, Texas, using precast segmental posttensioned construction provided a unique opportunity to investigate many aspects of segmental bridge technology. The project included balanced cantilever erection, span-by-span erection and some cast-in-place transitions. Some of the piers were also made with precast box sections. A detailed instrumentation study was carried out to determine post-tensioning force losses, thermal gradients and their effects, live load response, behavior of local zones such as diaphragms p-t anchorages and blisters and diffusion of post-tensioning forces, as well as evaluation of the degree of continuity obtained with the semicontinuous details utilized. The measurement results are presented and evaluated. Recommendations are made for improvement in bridge design specifications and construction practices. |
| 报告类型： | 科技报告 |
相关文献
- THE FIRST CHANNEL BRIDGES.
- Optimizing Mississippi Aggregates for Concrete Bridge Decks, State Study 231.
- Measurement Based Revisions for Segmental Bridge Design and Construction Criteria; Research rept
- INNOVATIVE DESIGN AND CONSTRUCTION OF CHESAPEAKE AND DELAWARE CANAL BRIDGE.
- Evaluation of Performance Based Concrete for Bridge Decks.
- DURABILITY OF PRECAST SEGMENTAL BRIDGES.
检索历史
应用推荐
