Fatigue Resistance and Reliability of High Mast Illumination Poles (HMIPs) with Pre-Existing Cracks
项目名称:
Fatigue Resistance and Reliability of High Mast Illumination Poles (HMIPs) with Pre-Existing Cracks
摘要:
This research project will evaluate the safe and serviceable lives and probability-based life cycle costs of Texas Department of Transportation (TxDOT) high mast illumination poles. The research includes a unique high-cycle resonant bending fatigue testing plan which will enable testing of high mast pole base connections up to 100 million cycles within 6 weeks. The research team will also conduct a detailed wind analysis based on a field monitoring campaign. The field measurements will be used to develop new and detailed wind loading models to minimize the uncertainty associated with wind loading of these structures. The dynamic response of the poles and the corresponding stress ranges will be modeled through a finite element analysis approach. A probabilistic life-cycle analysis will be used to evaluate the probability of failure of the poles and the benefit/cost ratio of various intervention techniques. The findings of the research project will serve as a state-of-the-art reference for TxDOT engineers and decision makers to allocate resources, minimize risk, and maximize benefit/cost ratios associated with maintenance of high mast poles.