Numerical Modelling and Dynamic Response Analysis of Curved Floating Bridges with a Small Rise-Span Ratio
As a potential option for transportation applications in coastal areas, curved floating bridges with a same small specified rise to span ratio of 0.134, supported by multiple pontoons, are investigated in this paper. Two conceptual curved bridges are proposed following a circular arc shape with diff...
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doaj-ce34c32d75ad42c59a67bef922055a5f2021-04-02T12:05:26ZengMDPI AGJournal of Marine Science and Engineering2077-13122020-06-01846746710.3390/jmse8060467Numerical Modelling and Dynamic Response Analysis of Curved Floating Bridges with a Small Rise-Span RatioLing Wan0Dongqi Jiang1Jian Dai2Faculty of Science Agriculture and Engineering, Newcastle University, Singapore 599493, SingaporeDepartment of Civil Engineering, School of Science, Nanjing University of Science and Technology, Nanjing 210094, ChinaDepartment of Marine Technology, Norwegian University of Science and Technology, 7491 Trondheim, NorwayAs a potential option for transportation applications in coastal areas, curved floating bridges with a same small specified rise to span ratio of 0.134, supported by multiple pontoons, are investigated in this paper. Two conceptual curved bridges are proposed following a circular arc shape with different span lengths (500 and 1000 m). Both bridges are end-connected to the shoreline without any underwater mooring system, while the end-connections can be either all six degrees of freedom (D.O.F) fixed or two rotational D.O.F released. Eigen value analysis is carried out to identify the modal parameters of the floating bridge system. Static and dynamic analysis under extreme environmental conditions are performed to study the pontoon motions as well as structural responses of the bridge deck. Deflections and internal forces (axial forces, shear forces, and bending moment) are thoroughly studied with the variation of the span length and end support conditions in terms of the same specified small rise-span ratio. The ratio of axial force to horizontal bending moment are presented. From the study, it is found that the current parameters for the bridge are relatively reasonable regarding responses. However, the small rise-span does not provide enough arch effects. A higher rise-span ratio or stiffer bridge cross-sectional property is preferred, especially for the long bridge. In addition, the flexible end connections are preferred considering the structural responses at the end regions.https://www.mdpi.com/2077-1312/8/6/467floating bridgeintegrated hydro-structural analysisdynamic responsecurved bridgebridge structural design |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ling Wan Dongqi Jiang Jian Dai |
spellingShingle |
Ling Wan Dongqi Jiang Jian Dai Numerical Modelling and Dynamic Response Analysis of Curved Floating Bridges with a Small Rise-Span Ratio Journal of Marine Science and Engineering floating bridge integrated hydro-structural analysis dynamic response curved bridge bridge structural design |
author_facet |
Ling Wan Dongqi Jiang Jian Dai |
author_sort |
Ling Wan |
title |
Numerical Modelling and Dynamic Response Analysis of Curved Floating Bridges with a Small Rise-Span Ratio |
title_short |
Numerical Modelling and Dynamic Response Analysis of Curved Floating Bridges with a Small Rise-Span Ratio |
title_full |
Numerical Modelling and Dynamic Response Analysis of Curved Floating Bridges with a Small Rise-Span Ratio |
title_fullStr |
Numerical Modelling and Dynamic Response Analysis of Curved Floating Bridges with a Small Rise-Span Ratio |
title_full_unstemmed |
Numerical Modelling and Dynamic Response Analysis of Curved Floating Bridges with a Small Rise-Span Ratio |
title_sort |
numerical modelling and dynamic response analysis of curved floating bridges with a small rise-span ratio |
publisher |
MDPI AG |
series |
Journal of Marine Science and Engineering |
issn |
2077-1312 |
publishDate |
2020-06-01 |
description |
As a potential option for transportation applications in coastal areas, curved floating bridges with a same small specified rise to span ratio of 0.134, supported by multiple pontoons, are investigated in this paper. Two conceptual curved bridges are proposed following a circular arc shape with different span lengths (500 and 1000 m). Both bridges are end-connected to the shoreline without any underwater mooring system, while the end-connections can be either all six degrees of freedom (D.O.F) fixed or two rotational D.O.F released. Eigen value analysis is carried out to identify the modal parameters of the floating bridge system. Static and dynamic analysis under extreme environmental conditions are performed to study the pontoon motions as well as structural responses of the bridge deck. Deflections and internal forces (axial forces, shear forces, and bending moment) are thoroughly studied with the variation of the span length and end support conditions in terms of the same specified small rise-span ratio. The ratio of axial force to horizontal bending moment are presented. From the study, it is found that the current parameters for the bridge are relatively reasonable regarding responses. However, the small rise-span does not provide enough arch effects. A higher rise-span ratio or stiffer bridge cross-sectional property is preferred, especially for the long bridge. In addition, the flexible end connections are preferred considering the structural responses at the end regions. |
topic |
floating bridge integrated hydro-structural analysis dynamic response curved bridge bridge structural design |
url |
https://www.mdpi.com/2077-1312/8/6/467 |
work_keys_str_mv |
AT lingwan numericalmodellinganddynamicresponseanalysisofcurvedfloatingbridgeswithasmallrisespanratio AT dongqijiang numericalmodellinganddynamicresponseanalysisofcurvedfloatingbridgeswithasmallrisespanratio AT jiandai numericalmodellinganddynamicresponseanalysisofcurvedfloatingbridgeswithasmallrisespanratio |
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