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Autonomous triggering system and measurement protocols for smart bridge testing.

机译：用于智能桥测试的自主触发系统和测量协议。

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摘要

This work describes the development and field trials of an autonomous triggering system for fast, economical bridge testing. Quantitative testing of bridges offers the ability to manage the structures better than with just qualitative inspections. The primary objectives of the proposed system are to acquire quantitative performance information from a load test while minimizing setup time at the bridge and closure time to traffic. Secondary objectives are minimizing the number of personnel required for the test and removing the need for personnel with specialized knowledge at the test site. The smart instrumentation consists of in-situ strain sensors, an embedded data acquisition module, and an infrared-based triggering system. Protocols are presented for static, quasi-static, and dynamic tests which integrate the embedded devices with the smart triggering. The triggering system detects the proper positioning of the load truck for measurements. The control unit in the truck serving as a load receives control and sensor data through a wireless link from in-situ instrumentation. Test parameters can be set through the control unit including the type of test (static, dynamic, or quasi-static), number of sensors, and several parameters for processing the data received. Only the driver of the load vehicle is required to operate the system. This procedure offers improvement in available information and economics. Timing and positional accuracy issues were investigated to insure that the protocols and triggering and positioning system were viable options for field instrumentation. In addition to system integration, data from laboratory tests of the system parameters, laboratory tests on a model bridge, and field tests on a large-scale bridge are given.
机译：这项工作描述了用于快速，经济的桥梁测试的自动触发系统的开发和现场试验。与仅进行定性检查相比，桥梁的定量测试可更好地管理结构。拟议系统的主要目标是从负载测试中获取定量的性能信息，同时将桥上的建立时间和通行时间缩短到最小。次要目标是使测试所需的人员最少，并消除对测试现场具有专业知识的人员的需求。该智能仪器包括原位应变传感器，嵌入式数据采集模块和基于红外的触发系统。提出了用于静态，准静态和动态测试的协议，这些协议将嵌入式设备与智能触发集成在一起。触发系统会检测载重车的正确位置以进行测量。卡车中用作负载的控制单元通过无线链接从现场仪表接收控制和传感器数据。可以通过控制单元设置测试参数，包括测试类型（静态，动态或准静态），传感器数量以及用于处理接收到的数据的多个参数。仅需要装载车辆的驾驶员来操作系统。此过程可提高可用信息和经济性。对时间和位置精度问题进行了调查，以确保协议和触发与定位系统是现场仪表的可行选择。除了系统集成之外，还提供了来自系统参数的实验室测试，模型桥上的实验室测试以及大型桥上的现场测试的数据。

著录项

  • 作者

    Swift, Theresa Mae.;

  • 作者单位

    Missouri University of Science and Technology.;

  • 授予单位 Missouri University of Science and Technology.;
  • 学科 Engineering Civil.;Engineering Electronics and Electrical.
  • 学位 Ph.D.
  • 年度 2009
  • 页码 83 p.
  • 总页数 83
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 建筑科学;无线电电子学、电信技术;
  • 关键词

  • 入库时间 2022-08-17 11:38:26

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