Fatigue Performance Prediction of RC Beams Based on Optimized Machine Learning Technology

Autor:	Li Song, Lian Wang, Hongshuo Sun, Chenxing Cui, Zhiwu Yu
Rok vydání:	2022
Předmět:	deep belief network particle swarm optimization reinforced concrete beam fatigue performance structural damage BP neural network General Materials Science
Zdroj:	Materials; Volume 15; Issue 18; Pages: 6349
ISSN:	1996-1944
Popis:	The development of fatigue damage in reinforced concrete (RC) beams is affected by various factors such as repetitive loads and material properties, and there exists a complex nonlinear mapping relationship between their fatigue performance and each factor. To this end, a fatigue performance prediction model for RC beams was proposed based on the deep belief network (DBN) optimized by particle swarm optimization (PSO). The original database of fatigue loading tests was established by conducting fatigue loading tests on RC beams. The mid-span deflection, reinforcement strain, and concrete strain during fatigue loading of RC beams were predicted and evaluated. The fatigue performance prediction results of the RC beam based on the PSO-DBN model were compared with those of the single DBN model and the BP model. The models were evaluated using the R2 coefficient, mean absolute percentage error, mean absolute error, and root mean square error. The results showed that the fatigue performance prediction model of RC beams based on PSO-DBN is more accurate and efficient.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c0a9d4b8abe39473a04bce130ad59161 https://pubmed.ncbi.nlm.nih.gov/36143662 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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