Calibrating Side-Resistance Factors of Drilled Shafts in Arizona Cohesionless Soils
| 项目名称： | Calibrating Side-Resistance Factors of Drilled Shafts in Arizona Cohesionless Soils |
| 摘要： | The 7th Edition of American Association of State and Highway Transportation Officials (AASHTO) Load and Resistance Factor Design (LRFD) Bridge Design Specifications (2014) contains some significant changes in the analysis for drilled shafts with respect to estimating side resistance. The AASHTO specifications are based on an evaluation of national data. AASHTO encourages owner agencies to develop local resistance factors, calibrated to local geologic conditions based on specific probabilistic, risk-based computational procedures. The current Arizona Department of Transportation (ADOT) specifications are conservative, but the new AASHTO specifications are even more so; using them for ADOT foundations could increase costs by requiring the drilling of longer-than-necessary shafts. Using resistance factors based on Arizona-specific geologic formations will shorten length requirements for drilled shafts and control the related construction costs. The study is using available load testing from Arizona sites and supplementing with axial load test data from other states (such as Nevada) with similar geological conditions to Arizona to develop those local resistance factors for drilled shaft design. To determine potential savings from using those newly developed resistance factors, the study is also gathering drilled shaft cost information from ADOT and other state transportation agencies. |
| 状态： | Active |
| 资金： | $111,331 |
| 资助组织： | Federal Highway Administration |
| 管理组织： | Arizona Department of Transportation |
| 项目负责人： | Stone, William |
| 执行机构： | School of Sustainable Engineering and the Built Environment, ASU |
| 主要研究人员： | van Paassen, Leon |
| 开始时间： | 20180619 |
| 预计完成日期： | 20201231 |
| 实际结束时间： | 0 |
相关文献
- Improving Strain Wedge Model Capabilities in Analyzing Large Diameter Drilled Shafts Subjected to Lateral Loading in Nevada Soils (NDOT 667-15-803)
- Effects of Construction Installation Methods on the Design and Performance of Drilled Shaft Foundations
- Best Practices and Specifications for Massive Concrete Drilled Shafts
- Reliability Based Deep Foundation Design Using Texas Cone Penetrometer (TCP) Test
- Test Methods for LRFD Resistance Factors of Drilled Shafts
- Load and Resistance Factors Design (LRFD) Resistance Factors for Tip Grouted Drilled Shafts
检索历史
应用推荐
