Simple geometrical model to analyze the motion detection of bridges based-GPS technique: case study Yonghe Bridge

Mosbeh R. Kaloop and Hui Li

Abstract

This study deals with the viability of using a designed geometrical model consists of plane, polar coordinates (PC) and span length in the determination of bridges deformation. The data of a Tianjin Yonghe bridge located in the southern part of China as collected by RTK-DGPS technique and Accelerometer were used in the analysis. Kalman filter and fast Fourier transformation (FFT) analyses were used to determine the frequency. The results indicate that the designed plane and PC geometrical model are easy to calculate the long-time structural deformation monitoring. In addition, the observed frequency using GPS with the rate of 20 Hz doesn\'t give correction natural frequency of the observation structures.

Key Words

bridge; monitoring; RTK-DGPS; accelerometer; deformation; geometry; tower.

Address

Mosbeh R. Kaloop: Public Works and Civil Engineering Department, Faculty of Engineering, Mansoura University, 35516, El-Mansoura, Egypt Hui Li: School of Civil Engineering, Harbin Institute of Technology, 150090, Harbin, China

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