• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>NDE/NDT for Highways and Bridges >Structural Health Monitoring and Nondestructive Evaluation of the Merrimack River and Washington Street Bridges
【24h】

Structural Health Monitoring and Nondestructive Evaluation of the Merrimack River and Washington Street Bridges

机译：梅里克河和华盛顿街桥的结构健康监测与无损评价

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Merrimack River and Washington Street Bridges are comprised of three bridges with twelve spans (five trusses, four deck girders and three through girder spans) for a total length of 1,042 ft. After serving as a vital rail infrastructure link for passengers and freight for over 85 years, the bridge structures have deteriorated with various major structural deficiencies. Phase I (rehabilitation design) for these bridges included field inspections, load ratings, controlled live load testing and fatigue monitoring. Also, remaining life analyses were performed to assess the current condition of the bridges. Controlled live load testing was chosen as a reliable and proven nondestructive evaluation (NDE) method to accurately assess the performance of the structure under live loads and the results were used to calibrate structural models for the load rating. Additionally, the bridges were monitored for fatigue performance. This structural health monitoring was used in conjunction with the historical load data to evaluate the remaining fatigue life of the bridges. NDE and fatigue monitoring established that the majority of the bridge members still have a satisfactory remaining life. Presented herein are the initial ratings and the NDE procedures that were used to assess the structural capacity and the remaining fatigue life of the bridges.
机译：梅里马克河和华盛顿街桥有十二个跨度（5个桁架，四根甲板梁和三个过梁跨度）为042英尺，总长度由三座桥梁。作为一个多重要的铁路基础设施链接，客运和货运之后85年来，桥梁结构具有各种主要结构缺陷的恶化。阶段I（康复设计）对于这些桥接器包括现场检查，负荷额定值，受控的活载测试和疲劳监测。此外，进行了剩余的寿命分析以评估桥的当前条件。选择受控的现场载荷测试作为可靠且经过验证的非破坏性评估（NDE）方法，以准确评估现场负荷下结构的性能，结果用于校准载荷额定值的结构模型。另外，监测桥梁以疲劳性能。这种结构健康监测与历史负荷数据结合使用，以评估桥梁的剩余疲劳寿命。 NDE和疲劳监测确定了大多数桥梁仍然具有令人满意的剩余寿命。本文呈现的是用于评估结构容量和桥梁的剩余疲劳寿命的初始评级和NDE程序。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号