Bridge Damping Extraction Method from Vehicle–Bridge Interaction System Using Double-Beam Model

When vehicles interact with a bridge, a vehicle–bridge interaction (VBI) system is created. The frequency and modal shape of VBI systems have been widely studied, but the damping of VBI systems has not been adequately investigated. In recent years, several incidents of abnormal bridge vibration due...

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Autores principales:	Fengzong Gong, Fei Han, Yingjie Wang, Ye Xia
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	vehicle–bridge interaction double-beam system extended dynamic stiffness method (EDSM) bridge damping Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/82e39160b8e54138b157a1a5a336ab6e
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id	oai:doaj.org-article:82e39160b8e54138b157a1a5a336ab6e
record_format	dspace
spelling	oai:doaj.org-article:82e39160b8e54138b157a1a5a336ab6e2021-11-11T15:19:58ZBridge Damping Extraction Method from Vehicle–Bridge Interaction System Using Double-Beam Model10.3390/app1121103042076-3417https://doaj.org/article/82e39160b8e54138b157a1a5a336ab6e2021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/21/10304https://doaj.org/toc/2076-3417When vehicles interact with a bridge, a vehicle–bridge interaction (VBI) system is created. The frequency and modal shape of VBI systems have been widely studied, but the damping of VBI systems has not been adequately investigated. In recent years, several incidents of abnormal bridge vibration due to changes in bridge damping have occurred and aroused widespread concern in society. Damping is an important evaluation index of structural dynamic performance. Knowing the damping ratio of a VBI system is useful for analyzing the damping changes while a bridge is in service. This paper presents a method to extract bridge damping values from a VBI system, which can serve as a guide for bridge damping evaluation. First, a double-beam theoretical model was used to simplify the VBI system for cases involving uniform traffic flow. The damping ratio equation for the simplified VBI system was obtained using the extended dynamic stiffness method (EDSM). A double-beam finite element model and a VBI finite element model were established. The damping ratios of the two models were separately calculated and then compared with the simplified VBI model results. The results verified the accuracy of the simplified method. This paper then explains that bridge damping values can be extracted by estimating the equivalent traffic flow parameters and using the damping formula for the simplified VBI system. The bridge damping ratios extracted using this method in an engineering case ranged from 0.75% to 0.78%, which is smaller than the range that was directly identified using monitoring data (0.83–1.19%). The results show that the method can effectively extract bridge damping ratios and improve damping ratio identification.Fengzong GongFei HanYingjie WangYe XiaMDPI AGarticlevehicle–bridge interactiondouble-beam systemextended dynamic stiffness method (EDSM)bridge dampingTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10304, p 10304 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	vehicle–bridge interaction double-beam system extended dynamic stiffness method (EDSM) bridge damping Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	vehicle–bridge interaction double-beam system extended dynamic stiffness method (EDSM) bridge damping Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Fengzong Gong Fei Han Yingjie Wang Ye Xia Bridge Damping Extraction Method from Vehicle–Bridge Interaction System Using Double-Beam Model
description	When vehicles interact with a bridge, a vehicle–bridge interaction (VBI) system is created. The frequency and modal shape of VBI systems have been widely studied, but the damping of VBI systems has not been adequately investigated. In recent years, several incidents of abnormal bridge vibration due to changes in bridge damping have occurred and aroused widespread concern in society. Damping is an important evaluation index of structural dynamic performance. Knowing the damping ratio of a VBI system is useful for analyzing the damping changes while a bridge is in service. This paper presents a method to extract bridge damping values from a VBI system, which can serve as a guide for bridge damping evaluation. First, a double-beam theoretical model was used to simplify the VBI system for cases involving uniform traffic flow. The damping ratio equation for the simplified VBI system was obtained using the extended dynamic stiffness method (EDSM). A double-beam finite element model and a VBI finite element model were established. The damping ratios of the two models were separately calculated and then compared with the simplified VBI model results. The results verified the accuracy of the simplified method. This paper then explains that bridge damping values can be extracted by estimating the equivalent traffic flow parameters and using the damping formula for the simplified VBI system. The bridge damping ratios extracted using this method in an engineering case ranged from 0.75% to 0.78%, which is smaller than the range that was directly identified using monitoring data (0.83–1.19%). The results show that the method can effectively extract bridge damping ratios and improve damping ratio identification.
format	article
author	Fengzong Gong Fei Han Yingjie Wang Ye Xia
author_facet	Fengzong Gong Fei Han Yingjie Wang Ye Xia
author_sort	Fengzong Gong
title	Bridge Damping Extraction Method from Vehicle–Bridge Interaction System Using Double-Beam Model
title_short	Bridge Damping Extraction Method from Vehicle–Bridge Interaction System Using Double-Beam Model
title_full	Bridge Damping Extraction Method from Vehicle–Bridge Interaction System Using Double-Beam Model
title_fullStr	Bridge Damping Extraction Method from Vehicle–Bridge Interaction System Using Double-Beam Model
title_full_unstemmed	Bridge Damping Extraction Method from Vehicle–Bridge Interaction System Using Double-Beam Model
title_sort	bridge damping extraction method from vehicle–bridge interaction system using double-beam model
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/82e39160b8e54138b157a1a5a336ab6e
work_keys_str_mv	AT fengzonggong bridgedampingextractionmethodfromvehiclebridgeinteractionsystemusingdoublebeammodel AT feihan bridgedampingextractionmethodfromvehiclebridgeinteractionsystemusingdoublebeammodel AT yingjiewang bridgedampingextractionmethodfromvehiclebridgeinteractionsystemusingdoublebeammodel AT yexia bridgedampingextractionmethodfromvehiclebridgeinteractionsystemusingdoublebeammodel
_version_	1718435374886289408

Bridge Damping Extraction Method from Vehicle–Bridge Interaction System Using Double-Beam Model

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