结合地基干涉雷达与GPS超高层动态变形监测

Combination of Interferometry Technology and GPS Dynamic Deformation Monitoring and Monitoring

随着建筑物的不断增高,受到外界环境影响越大,容易产生较大变形而危及结构安全.地基干涉雷达和GPS都具有高精度、实时连续观测和受天气影响小的优点,对于超高层的动态监测有更好的实用价值.以北京某超高层为研究背景,结合地基干涉雷达与GPS获取超高层的动态扰度变形数据,利用EMD去噪算法对原始观测数据进行降噪处理,采用FFT与HHT方法进行波谱分析超高层的自振频率.结果表明结合地基干涉雷达与GPS进行超高层动态变形监测精度更高,优化了超高层动态变形监测方法,为今后的建筑物变形监测提供新的方法理论依据.

With the continuous increase of buildings, the greater the influence of the external environment, the larger deformation is easy to produce and endanger the structural safety. Ground-based interferometric radar and GPS both have the advantages of high accuracy, continuous real-time obsrvation and small influence by the weather, and have better practical value for super high-rise dynamic monitoring. Based on the research background of a super high-rise in Beijing, combined with ground-based interferometric radar and GPS to obtain dynamic disturbance and deformation data of super high-rises, the original observation data are denoised using EMD denoising algorithm, and the spectral analysis, self-resonant frequency of super high-rises, is perfomled using FFT and HHT methods. The results show that the combination of ground-based interferometric radar and GPS is more accurate in super-high-rises dynamic deformation monitoring, and the super-high-rises dynamic deformation monitoring method is optimized, which provides a new theoretical basis for future building deformation monitoring.