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http://dx.doi.org/10.7734/COSEIK.2020.33.3.193

Use of a Genetic Algorithm to Predict the Stiffness Reductions and Retrofitting Effects on Structures Subjected to Seismic Loads  

Lee, Jae-Hun (Korea Infrastructure Safety Research Institute)
Ahn, Kwang-Sik (Department of Earthquake and Disaster Prevention Engineering, Andong National Univ)
Lee, Sang-Youl (Department of Civil Engineering, Andong National Univ.)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.33, no.3, 2020 , pp. 193-199 More about this Journal
Abstract
This study examines a method for identifying stiffness reductions in structures subjected to seismic loads and retrofitting effects using a combination of the finite element method and an advanced genetic algorithm. The novelty of this study is the application of seismic loading and its response to anomalies in the tested structure. The technique described in this study may enable not only detection of damaged elements but also the identification of their locations and the extent of damage due to seismic loading. To demonstrate the feasibility of the method, the advanced genetic algorithm is applied to frame and truss bridge structures subjected to El Centro and Pohang seismic loads. The results reveal the excellent computational efficiency of the method and its ability to prevent severe damage from earthquakes.
Keywords
seismic load; stiffness reduction; retrofitting effect; genetic algorithm;
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