Abstract
As the most critical force transmitting and bearing components of arch bridges, the hanger is also the weakest link of the bridge. Damage to the hanger leads to a redistribution of the internal forces and potentially even the collapse of the bridge. Therefore, this paper proposes a new damage detection method for hangers. Based on the principle of superposition, the relationship between the static deflection change and cable force is studied. Then, a new index is proposed for identifying the damage to arch bridge hangers. Numerical and laboratory investigations demonstrate that this method can successfully locate damage regardless of its location; moreover, the degree of damage can be relatively quantified. In addition, the method is easy to operate and suitable for practical engineering applications.
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Acknowledgments
This paper is supported by the National Natural Science Foundation of China (NSFC) under grant No. 51278315. The first author of this paper expresses her sincere gratitude to the government for its financial support.
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Wang, W., Su, M. & Wang, C. Static Deflection Difference-Based Damage Identification of Hanger in Arch Bridges. KSCE J Civ Eng 26, 5096–5106 (2022). https://doi.org/10.1007/s12205-022-1347-z
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DOI: https://doi.org/10.1007/s12205-022-1347-z