Strength of Horizontal Shear Reinforcement with Limited Development
| 项目名称： | Strength of Horizontal Shear Reinforcement with Limited Development |
| 摘要： | The objective of this project is to determine if adequate horizontal shear capacity is provided by the 5-inch concrete deck on slab and box beams, despite lack of reinforcement development. Horizontal cracks between the precast beams and the cast-in-place decks were noticed in several Texas Department of Transportation (TxDOT) bridges. Those cracks could be due to stresses induced by shrinkage or shear forces. In any case, this shows that current TxDOT details might not provide sufficient horizontal shear resistance in those members. The work plan is to first conduct small scale tests to investigate the three major components of horizontal shear resistance: (1) cohesion and/or aggregate interlock, (2) friction between the crack faces, and (3) dowel action of the reinforcement. A simple bar pullout test will also be used to evaluate the influence of the bend curvature on the bond and slip characteristics of the horizontal shear reinforcement. Alternative details for surface roughness and bar geometries will be investigated. The second phase of this research will be testing several full-scale composite box and slab beams with current and proposed alternative details to investigate the overall composite behaviors that may be overlooked in the small scale tests. |
| 状态： | Completed |
| 资金： | 0.00 |
| 资助组织： | Texas Department of Transportation |
| 项目负责人： | Jensen, Darrin；Eskridge, Amy |
| 执行机构： | University of Texas, Arlington |
| 开始时间： | 20110901 |
| 实际结束时间： | 20140831 |
| 主题领域： | Bridges and other structures；Highways |
相关文献
- ROTATION OF MOMENTS AND SHEAR BEARING CAPACITY IN PRESTRESSED CONCRETE
- Refinement of Shear Strength Properties for Geotechnical Design
- Research for AASHTO Standing Committee on Highways. Task 402. Proposed Modification to AASHTO LRFD Reinforced Concrete Interface Shear Design and Detailing
- FULL SCALE TEST TO CHECK THE SAFETY AGAINST PUNCHING THROUGH OF THICK FOUNDATION SLABS
- Correlation of Shear Design between AASHTO LRFD Bridge Design Specifications and the AASHTO Guide Specifications
- Performance of High-Strength Steel Reinforcement in Shear Friction Applications
检索历史
应用推荐
