Probability-based practice-oriented seismic behaviour assessment of simply supported RC bridges considering the variation and correlation in pier performance
Probability-based seismic performance assessment of in-service bridges has gained much attention in the scientific community during the past decades. The nonlinear static pushover analysis is critical for describing the seismic behaviour of bridges subjected to moderate to high seismicity due to its...
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Series: | Journal of Traffic and Transportation Engineering (English ed. Online) |
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doaj-8224424a691243629483b677747f393b2021-02-02T04:37:02ZengKeAi Communications Co., Ltd.Journal of Traffic and Transportation Engineering (English ed. Online)2095-75642018-12-0156491502Probability-based practice-oriented seismic behaviour assessment of simply supported RC bridges considering the variation and correlation in pier performanceLong Zhang0Cao Wang1CCCC Highway Consultants CO., Ltd., Beijing 100088, ChinaSchool of Civil Engineering, The University of Sydney, Sydney, NSW 2006, Australia; Department of Civil Engineering, Tsinghua University, Beijing 100084, China; Corresponding author. School of Civil Engineering, The University of Sydney, Sydney, NSW 2006, Australia. Tel.: +61 424003086.Probability-based seismic performance assessment of in-service bridges has gained much attention in the scientific community during the past decades. The nonlinear static pushover analysis is critical for describing the seismic behaviour of bridges subjected to moderate to high seismicity due to its simplicity. However, in existing analysis methods, the generation of pushover curve needs tremendous amount of computational costs and requires skills, which may halter its application in practice, implying the importance of developing practice-oriented analysis method with improved efficiency. Moreover, the bridge pier performance has been modelled as deterministic, indicating that the variation associated with the pier material and mechanical properties remains unaddressed. The correlation in the performance of different piers also exists due to the common design provisions and construction conditions but has neither been taken into account. This paper develops a simplified pushover analysis procedure for the seismic assessment of simply supported RC bridges. With the proposed method, the pushover curve of the bridge can be obtained explicitly without complex finite element modelling. A random factor is introduced to reflect the uncertainty in relation to the pushover curve. The correlation in the pier performance is considered by employing the Gaussian copula function to construct the joint probability distribution. Illustrative examples are presented to demonstrate the applicability of the method and to investigate the impact of variation and correlation in bridge pier behaviour on the seismic performance assessment. Keywords: Seismic assessment, Simply supported RC bridge, Nonlinear analysis, Simplified method, Variation in pier behaviour, Correlation in pier behaviourhttp://www.sciencedirect.com/science/article/pii/S2095756418304719 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Long Zhang Cao Wang |
spellingShingle |
Long Zhang Cao Wang Probability-based practice-oriented seismic behaviour assessment of simply supported RC bridges considering the variation and correlation in pier performance Journal of Traffic and Transportation Engineering (English ed. Online) |
author_facet |
Long Zhang Cao Wang |
author_sort |
Long Zhang |
title |
Probability-based practice-oriented seismic behaviour assessment of simply supported RC bridges considering the variation and correlation in pier performance |
title_short |
Probability-based practice-oriented seismic behaviour assessment of simply supported RC bridges considering the variation and correlation in pier performance |
title_full |
Probability-based practice-oriented seismic behaviour assessment of simply supported RC bridges considering the variation and correlation in pier performance |
title_fullStr |
Probability-based practice-oriented seismic behaviour assessment of simply supported RC bridges considering the variation and correlation in pier performance |
title_full_unstemmed |
Probability-based practice-oriented seismic behaviour assessment of simply supported RC bridges considering the variation and correlation in pier performance |
title_sort |
probability-based practice-oriented seismic behaviour assessment of simply supported rc bridges considering the variation and correlation in pier performance |
publisher |
KeAi Communications Co., Ltd. |
series |
Journal of Traffic and Transportation Engineering (English ed. Online) |
issn |
2095-7564 |
publishDate |
2018-12-01 |
description |
Probability-based seismic performance assessment of in-service bridges has gained much attention in the scientific community during the past decades. The nonlinear static pushover analysis is critical for describing the seismic behaviour of bridges subjected to moderate to high seismicity due to its simplicity. However, in existing analysis methods, the generation of pushover curve needs tremendous amount of computational costs and requires skills, which may halter its application in practice, implying the importance of developing practice-oriented analysis method with improved efficiency. Moreover, the bridge pier performance has been modelled as deterministic, indicating that the variation associated with the pier material and mechanical properties remains unaddressed. The correlation in the performance of different piers also exists due to the common design provisions and construction conditions but has neither been taken into account. This paper develops a simplified pushover analysis procedure for the seismic assessment of simply supported RC bridges. With the proposed method, the pushover curve of the bridge can be obtained explicitly without complex finite element modelling. A random factor is introduced to reflect the uncertainty in relation to the pushover curve. The correlation in the pier performance is considered by employing the Gaussian copula function to construct the joint probability distribution. Illustrative examples are presented to demonstrate the applicability of the method and to investigate the impact of variation and correlation in bridge pier behaviour on the seismic performance assessment. Keywords: Seismic assessment, Simply supported RC bridge, Nonlinear analysis, Simplified method, Variation in pier behaviour, Correlation in pier behaviour |
url |
http://www.sciencedirect.com/science/article/pii/S2095756418304719 |
work_keys_str_mv |
AT longzhang probabilitybasedpracticeorientedseismicbehaviourassessmentofsimplysupportedrcbridgesconsideringthevariationandcorrelationinpierperformance AT caowang probabilitybasedpracticeorientedseismicbehaviourassessmentofsimplysupportedrcbridgesconsideringthevariationandcorrelationinpierperformance |
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