GPS精密单点定位方法监测高层建筑风致响应

Measuring wind-induced response characteristics of tall building based on GPS PPP method

针对传统传感器及GPS差分方法监测高层建筑风致动态响应特征的不足,提出基于GPS精密单点定位(PPP)技术监测风振的新方法。研究结果表明:PPP方法与GPS差分方法在振动频率识别以及振动位移大小观测方面能取得一致的结果,而通过对实际工程监测数据得出,PPP方法与传统加速度器方法在获取监测建筑主振模态及振动加速度方面能取得一致结果。基于PPP方法监测高层建筑风致动态响应特征既可节约成本,又能保证精度。

In order to overcome the disadvantages of monitoring wind-induced dynamic response characteristics of high-rise building using traditional sensors, or differential GPS positioning method, a new method based on the GPS precise point positioning （PPP） technology was proposed. The results show that PPP method and differential GPS method have good consistency in the vibration frequency identification and observation of the vibration displacement. Engineering practice data analysis shows that PPP method and accelerator method have good agreement on model parameter identification and observation of response acceleration. PPP method can save costs but also ensure accuracy for monitoring wind-induced dynamic response characteristics of high-rise building.