Abstract
Proper deformation process is essential for forming the shape of cable net structures during construction. This highlights the importance of identifying uneven and excessive deformation when building large-scale cable net structures. As such, the deformation of large-scale cable net structures should be accurately monitored in a real-time manner during the construction process. This study is to develop a laser-based displacement monitoring system for tracing the real-time deformation of large-scale spatial structures. The developed displacement monitoring system combines wireless sensor networks (WSN) and laser ranging technology. The laser-based displacement monitoring system is implemented on the National Speed Skating Oval (NSSO), which is a large-scale cable net structure, to obtain the relative displacement change between the cable net structure and the supporting system. On the other hand, the finite element (FE) model of the NSSO is established to simulate the deformation process. Then, the measured displacement results are compared with the FE model-derived counterparts. It is shown that the simulated and measured results have a good agreement, which indicates the effectiveness of the laser-based displacement monitoring system.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (Grant Nos. 51878235 and 51778568), the Zhejiang Provincial Key Research and Development Program (2021C03154), and the Fundamental Research Funds for the Central Universities (Grant Nos. 2020QNA4015 and 2020XZZX005-04).
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Luo, Y., Chen, Y., Wan, HP. et al. Development of laser-based displacement monitoring system and its application to large-scale spatial structures. J Civil Struct Health Monit 11, 381–395 (2021). https://doi.org/10.1007/s13349-020-00459-4
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DOI: https://doi.org/10.1007/s13349-020-00459-4