《Journal of Structural Engineering》杂志刊登“结构安全监测中的GPS技术总结”

作  者：Seok Been Im, Stefan Hurlebaus, Young Jong Kang

刊  物：《Journal of Structural Engineering》，2013年第139卷，1653-1664页

关键词：全球定位系统；安全监测；实时监测

摘  要：在过去的二十年中，全球定位系统（GPS）技术迅速发展，已经用于土木结构的结构性能监测。目前，GPS技术只能应用于具有低模态的柔性结构，在精确测量方面仍存在问题。然而，因GPS可以测量实时动态特性和静态位移，其作为监测工具应用前景广阔，而传统的监测系统使用加速度计仅可测量静态和准静态位移。此外，GPS设备和算法的快速发展减少了GPS的数据错误，使用GPS接收器的集成系统与其它辅助传感器能够提供精确的测量。因此，GPS技术可以实时提供精确的结构位移，利用有限元模型和数值分析可以计算结构的应力和应变条件。利用获得的结构动态特性，可确定结构破坏位置和严重程度。最后总结了GPS技术在结构安全监测方面的应用。

Summary Review of GPS Technology for Structural Health Monitoring

Authors: Seok Been Im, Stefan Hurlebaus, Young Jong Kang

Journal: Journal of Structural Engineering, Volume 139, SPECIAL ISSUE, 2013, 1653–1664

Key words: GPS; Health monitoring， Real-time monitoring

Abstract: Over the last two decades, global positioning system (GPS) technology has been developed rapidly and recently applied to civil structures for appropriate monitoring of structural performance. Currently, the GPS technique can only be applied to flexible structures having lower modal frequency ranges, and it still has remaining issues when it comes to obtaining accurate measurements. However, the application of GPS is promising as a monitoring tool because it can measure dynamic characteristics and static displacements in real time, whereas the conventional monitoring system using accelerometers cannot measure static and quasi-static displacements. Furthermore, rapid advancements in GPS devices and algorithms can mitigate erroneous sources of GPS data, and integrated systems using GPS receivers with other supplement sensors are capable of providing accurate measurements. Therefore, GPS technology can provide accurate displacements of structures in real time, and stress and strain conditions of the structures can be computed using finite-element models and numerical analyses. It is also expected that damage localization and severity can be identified using the dynamic characteristics of structures obtained from GPS. This paper summarizes the use of GPS technology for structural health monitoring.

原文链接：http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000475