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Fatigue Resistant Design Criteria for MD SHA Cantilevered Mast Arm Signal Structures
| 题名： | Fatigue Resistant Design Criteria for MD SHA Cantilevered Mast Arm Signal Structures |
| 作者： | Fu, C. C.; Ye, Y.; Xu, C.; Hou, K. |
| 关键词： | Fatigue design##Signal pole##Mast arm##Fatigue##Stress category##Wind##Signal structure## |
| 摘要： | The fatigue design of the mast arm structures and connections vary significantly based on the Category of Importance factor adopted and the load cases for fatigue design loads. Consideration should include the cost and size of the structures for both urban and rural applications, and the type of vibration mitigation devices to be adopted for use on cantilevered mast arm structures. The objectives of this study were as follows: (1) Update the existing Maryland (MD) SHA Book of Standards for Highway, Incidental Structures and Traffic Control Applications to meet the current AASHTO design criteria. (2) Analyze the current MD structure designs and provide a cost analysis for recommending an economical and fatigue resistant design. (3) Define the design parameters for the signal structures by identifying the suitable Category of Importance Factor (I, II, or III) to be adapted by SHA, and to define the allowable load for the signal structure design. Provide complete structural details including foundation details, base plate size and thickness, size and numbers of anchor bolts, hand hole size and locations for fatigue resistant design. |
| 总页数： | 85 |
| 报告类型： | 科技报告 |
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