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首页> 外文会议>Cold regions engineering 2009 : Cold regions impact on research, design, and construction >AN INNOVATIVE SENSOR FOR ASSISTING SPRING LOAD RESTRICTIONS: RESULTS OF FIELD DEMONSTRATION STUDY
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AN INNOVATIVE SENSOR FOR ASSISTING SPRING LOAD RESTRICTIONS: RESULTS OF FIELD DEMONSTRATION STUDY

机译：一种用于限制弹簧载荷限制的创新传感器：现场演示研究的结果

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摘要

Spring Load Restrictions (SLR) are commonly used as a pavement preservation strategy in cold regions. Implementation of SLR has been found to bring about significant economic benefits by extending the pavement service life. Monitoring the freeze/thaw status of subsurface soils is crucial for making sound decisions on SLR implementation. Current tools to assist this decision are limited, as they are unreliable and unable to provide timely data. As a result, the decisions on starting and ending of SLR as well as the magnitude of load restrictions are highly subjective. There remain room to optimize the benefits of this important transportation policy. This paper introduces the development of an innovative sensor for monitoring freeze-thaw status of subsurface conditions. This sensor possesses distributive sensing capability. Laboratory evaluation shows the sensor signal clearly indicate the infiltration process. The sensor was deployed at MnRoad, the world's largest and most comprehensive outdoor roadway laboratory. It has demonstrated excellent signal quality. Sensor signals provide clear information to identify the on-set and evolution of freezing and thaw process. Besides, the sensor signal indicated the subsurface thaw process accomplished about one month earlier than when the SLR is lifted. This sensor is promising to provide sound decision-support for SLR.
机译：弹簧载荷限制（SLR）通常在寒冷地区用作路面养护策略。已经发现，实施SLR可以通过延长路面使用寿命而带来显着的经济效益。监测地下土壤的冻结/融化状态对于做出正确的SLR决策至关重要。当前用于辅助此决策的工具是有限的，因为它们不可靠且无法提供及时的数据。结果，关于SLR的开始和结束以及负载限制的大小的决定是高度主观的。仍有空间可以优化这一重要交通政策的收益。本文介绍了一种用于监测地下条件的冻融状态的创新传感器的开发。该传感器具有分布式传感功能。实验室评估表明，传感器信号清楚地表明了渗透过程。该传感器已部署在MnRoad（全球最大，最全面的室外道路实验室）中。它表现出出色的信号质量。传感器信号提供清晰的信息，以识别冻结和解冻过程的开始和发展。此外，传感器信号指示地下融化过程比提起SLR时早约一个月完成。该传感器有望为SLR提供可靠的决策支持。

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