A Novel Dynamic Detection Method of Impact Factor Considering Deterioration of Pavement Roughness

作者：Liu, Chen Guang^*; Wang, Zong Lin; Gao, Qing Fei; Sun, Yong

来源：Journal of Testing and Evaluation, 2020, 48(4): 2580-2596.

DOI：10.1520/JTE20180071

• bridge dynamic detection
• impact factor
• pavement roughness
• vehicle-bridge interaction

The influence mechanism between the impact factor of bridge and pavement roughness was analyzed and a novel bridge dynamic detection method was presented in this article. Based on the vehicle-bridge vibration theory, the effect of both the spatial and frequency domain characters of pavement roughness on the impact factor were analyzed. Then, derived from the probability distribution model of the impact factor data, a new index for the dynamic increment that was excited by the pavement roughness was introduced. The new index can indicate the impact factors caused by the pavement roughness of different Power Spectral Density grades with selected assurance factors. Lastly, together with the new index, a novel dynamic detection method, which was developed from the obstacle moving truck testing method, was proposed. With a new equivalent design method, the dynamic increment excited by the artificial obstacles could be set similar to that which was caused by different degrees of pavement deterioration. The future dynamic response of the bridge could be predicted.

• 出版日期2020-7
• 单位哈尔滨工业大学