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Open AccessArticle

Performance Degradation Model for Concrete Deck of Bridge Using Pseudo-LSTM

School of Civil, Environmental and Architectural Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Korea
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Sustainability 2020, 12(9), 3848; https://doi.org/10.3390/su12093848
Received: 16 March 2020 / Revised: 20 April 2020 / Accepted: 5 May 2020 / Published: 8 May 2020
(This article belongs to the Special Issue Life Cycle Assessment in Materials Engineering and Sustainability)
The purpose of a bridge maintenance strategy is to make effective decisions by evaluating current performance and predicting future conditions of the bridge. The social cost because of the rapid increase in the number of decrepit bridges. The current bridge maintenance system relies on traditional man-power-based methods, which determine the bridge performance by employing a material deterioration model, and thus shows uncertainty in predicting the bridge performance. In this study, a new type of performance degradation model is developed using the actual concrete deck condition index (or grade) data of the general bridge inspection history database (1995–2017) on the national road bridge of the bridge management system in Korea. The developed model uses the long short-term memory algorithm, which is a type of recurrent neural network, as well as layer normalization and label smoothing to improve the applicability of basic data. This model can express the discrete historical degradation indices in continuous form according to the service life. In addition, it enables the prediction of bridge performance by using only basic information about new and existing bridges. View Full-Text
Keywords: bridge maintenance; structural health monitoring; degradation model; deep-learning bridge maintenance; structural health monitoring; degradation model; deep-learning
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Choi, Y.; Lee, J.; Kong, J. Performance Degradation Model for Concrete Deck of Bridge Using Pseudo-LSTM. Sustainability 2020, 12, 3848.

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