原文传递
Ultrahigh-Performance Concrete for Posttensioned Precast Bridge Piers for Seismic Resilience
| 题名： | Ultrahigh-Performance Concrete for Posttensioned Precast Bridge Piers for Seismic Resilience |
| 其他题名： | Anagnostopoulou,M.(2009)."Seismic design and analysis of precast segmental concrete bridge superstructure."M.Sc.thesis,Univ.of Pavia,Pavia,Italy. |
| 正文语种： | 英文 |
| 作者： | Cancan Yang |
| 关键词： | Advanced materials;Self-centering;Rocking;Low damage;Nonemulative connections;Accelerated bridge construction;Posttension;Seismic response;Seismic effects |
| 摘要： | Precast concrete bridge substructures accelerate construction. Precast concrete piers can also limit residual displacements after earthquakes when used with nonemulative connections. This paper investigates the use of ultrahigh-performance concrete (UHPC) to eliminate damage under moderate to high seismic activity for posttensioned self-centering precast piers. Large-scale laboratory testing was used to assess damage in pier specimens. Specimens were constructed in segments, where the column segment above the foundation had varying details: conventional concrete with mild steel reinforcing bars, UHPC with mild steel reinforcing bars, and UHPC without mild steel reinforcing bars. Specimens were subjected to quasi-static cyclic lateral loading, allowing and disallowing shear slip. The use of UHPC led to minimal damage at displacements much larger than the seismic demand. The difference in damage of UHPC segments with and without mild steel reinforcement was negligible. A comparison of hysteretic responses of different specimens revealed that strength, stiffness, and energy dissipation depended on shear slip more than the material type when shear slip was allowed. For tests without shear slip, specimens with UHPC had higher strength and stiffness. |
| 出版年： | 2017 |
| 论文唯一标识： | P-26Y2017V143N12008 |
| 英文栏目名称： | TECHNICAL PAPAERS |
| doi： | 10.1061/(ASCE)ST.1943-541X.0001906 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 143 |
| 期： | 12 |
| 页码： | 90-102 |
相关文献
- PCI Journalannounces authors of award-winning papers for 2015
- Enhanced Strategies for Seismic Resilient Posttensioned Reinforced Concrete Bridge Piers: Experimental Tests and Numerical Simulations
- Shear Behavior of Ultrahigh-Performance Concrete Pretensioned Bridge Girders
- Seismic Strengthening of Concrete Columns by Ultrahigh-Performance Fiber-Reinforced Concrete Jacketing
- Flexural Behavior and Design of Ultrahigh-Performance Concrete Beams
- Performance-Based Seismic Design of Shape Memory Alloy–Reinforced Concrete Bridge Piers. II: Methodology and Design Example
检索历史
应用推荐
