Advances in structural monitoring with Global Positioning System technology: 1997-2006
Advances in structural monitoring with Global Positioning System technology: 1997-2006
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DOI：
10.1515/jag.2007.019
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发表时间：
2007-11-01
影响因子：
1.4
通讯作者：
Rizos, Chris
中科院分区：
文献类型：
--
作者：
Ogaja, Clement;Li, Xiaojing;Rizos, Chris
在过去的十年中，全球定位系统（GPS）的用户已经开发出能够满足严格要求的技术，以研究高层建筑、塔楼和桥梁在地震、风致变形和交通荷载下的动力学。目前可以使用实时运动学（RTK）定位技术对结构的相对位移进行动态测量，现在先进到通常以1020 Hz（或更高-例如100 Hz）记录，水平精度为+/- 1厘米，垂直精度为+/- 2厘米。随着技术的进一步发展和采样能力的提高，可以满足结构工程界对实时位移信息的需求。在证明该技术的可行性方面取得了十年的巨大进步之后，焦点正在转向传感器集成和操作系统。目前，一些研究人员正在定期研究GPS与其他传感器（加速度计、光纤、伪卫星等）的集成，以利用互补优势并克服单个系统的局限性。实时操作系统的实例证明了GPS技术在测量大型工程结构动力性能方面的重要性。
Over the last decade, users of the Global Positioning System (GPS) have developed the technology capable of meeting stringent requirements to study the dynamics of tall buildings, towers, and bridges during earthquakes, wind-induced deformation and traffic loading. Dynamic measurements of relative displacements of structures is currently possible using real-time kinematic (RTK) positioning techniques, now advanced to record typically at 1020 Hz (or higher -e.g., 100 Hz) with an accuracy of +/- 1 cm horizontally and +/- 2 cm vertically. With further advances in the technology and improvements in sampling capability, it is possible to meet the needs of real-time displacement information for the structural engineering community. After a decade of great strides in proving the feasibility of the technology, focus is moving to sensor integration and operational systems. Several investigators are now routinely researching the integration of GPS with other sensors (accelerometers, fibre optics, pseudolites, etc.) to utilise the complementary benefits and overcome limitations of the individual systems. Examples of real-time operational systems exist to demonstrate the significance of GPS technology in measuring the dynamic behaviour of large engineering structures.