Bridge state evaluation and numerical simulation analysis based on millimeterwave radar measurement and control
1. College of Civil Engineering and Architectural, Hebei University, Baoding, Hebei 071002, China; 2. Hebei Xiongan RongchengWuhai Expressway Co., Ltd., Baoding, Hebei 071799, China; 3. China Power Construction Jijiao Expressway Investment and Development Co., Ltd., Shijiazhuang， Hebei 050051, China
Abstract：To investigate the automatic monitoring technology of key construction nodes and structures of super-large bridges constructed with cantilever, the 0# block radar measurement and control, the settlement monitoring of construction sections and the mechanical response monitoring of whole bridge were carried out during the deformation and stress stages of the cantilever construction bridge section. The measurement and control data of stress and deformation in actual construction and simulation data were compared and analyzed, and the safety state of bridge section during construction was judged by the coincidence. By the mathematical statistics method, the accuracy of radar monitoring data was compared with that of traditional monitoring data. The research results show that radar monitoring can work around the clock and can analyze typical fluctuations in cloud images in combination with construction logs. The fitting value of millimeter-wave radar monitoring block 0# deformation data is 0.051 44, which is better than 0.006 32 of the traditional monitoring method and has stronger correlation with the numerical simulation curve. During the whole construction period, the monitoring data of the force and deformation of each segment of the whole bridge fluctuate around the theoretical values with small fluctuation range, and the continuous beam is always in safe state.
杨三强， 代泽煜， 杨祥， 唐兰军. 基于毫米波雷达测控的桥梁状态评估与数值仿真分析[J]. 江苏大学学报（自然科学版）, 2023, 44(5): 606-613.
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