Simulation of Degradation and Failure of Suspension Bridge Main Cables due to
Natural and Anthropogenic Hazards
| 项目名称： | Simulation of Degradation and Failure of Suspension Bridge Main Cables due to Natural and Anthropogenic Hazards |
| 摘要： | The primary goal of this proposal is to develop a well-defined methodology to estimate the remaining strength of a suspension bridge cable that has been exposed to fire. The methodology will rely on a general purpose Finite Element (FE) code (ABAQUS) that is commercially available and widely used in the profession. The cable FEM model will be developed and calibrated using the extensive experimental data already available to the research team: this data will provide the much-needed thermo-mechanical properties for the ASTM 586 steel used in main cables. This will allow the research team to study the evolution of the reduction of the cable strength over time of exposure, accounting also for the cooling phase when the fire is extinguished. This FEM model is expected to (1) provide high-confidence designs of new structures, (2) retrofit existing structures with novel hardening systems, (3) quantify more accurately the hazards associated with traffic patterns and general access to cables, and (4) perform high-fidelity forensic investigations of structures subjected to fire events. |
| 状态： | Active |
| 资金： | 195888 |
| 资助组织： | Office of the Assistant Secretary for Research and Technology |
| 项目负责人： | Szary, Patrick J；Khazem, D |
| 执行机构： | Columbia University |
| 开始时间： | 20190901 |
| 预计完成日期： | 20200831 |
| 主题领域： | Bridges and other structures；Design；Highways；Maintenance and Preservation；Materials；Security and Emergencies |
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