Seismic Analysis of Coupled High-Speed Train-Bridge with the Isolation of Friction Pendulum Bearing

The paper presents a framework for the seismic analysis of the coupled high-speed train-bridge with the isolation of friction pendulum bearing (FPB). Taking the rail irregularities as system’s self-excitation with the seismic as external excitation, the equation of motion of the train-bridge coupled...

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Main Authors: Xinmin Hong, Wenhua Guo, Zihao Wang
Format: Article
Language:English
Published: Wiley 2020-01-01
Series:Advances in Civil Engineering
Online Access:http://dx.doi.org/10.1155/2020/8714174
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author Xinmin Hong
Wenhua Guo
Zihao Wang
author_facet Xinmin Hong
Wenhua Guo
Zihao Wang
author_sort Xinmin Hong
collection DOAJ
description The paper presents a framework for the seismic analysis of the coupled high-speed train-bridge with the isolation of friction pendulum bearing (FPB). Taking the rail irregularities as system’s self-excitation with the seismic as external excitation, the equation of motion of the train-bridge coupled system under earthquake is built up. A five-span simple-supported railway bridge is taken as an example, and the computer simulation method is used to establish the dynamic model of the train-bridge system with the isolation of FPB under earthquake. A train composed of eight 4-axle coaches of 35 degrees-of-freedom (DOF) is considered, and FPB is simulated by a force element which includes both nonlinear spring and damper characteristics and a hysteresis function. Backward differentiation formula and the mode superposition method are adopted in the calculation of coupling vibration of the train-bridge system. The dynamic responses of the train running on the bridge with the isolation of FPB and with the common spherical bearing (CSB) under earthquake are studied. The results show that FPB with a friction coefficient no less than 0.05, instead of CSB, can reduce the dynamic response of the train greatly; the faster the train speed and the higher the pier, the greater the effect of FPB. However, FPB may increase the dynamic response of the train when the seismic intensity exceeds 0.14 g.
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spelling doaj-art-e13d0c19336f4195898bf8b8554c8bbc2025-02-03T06:06:38ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/87141748714174Seismic Analysis of Coupled High-Speed Train-Bridge with the Isolation of Friction Pendulum BearingXinmin Hong0Wenhua Guo1Zihao Wang2School of Civil Engineering, Central South University, Tianxin District, Changsha 410075, ChinaSchool of Civil Engineering, Central South University, Tianxin District, Changsha 410075, ChinaSchool of Civil Engineering, Central South University, Tianxin District, Changsha 410075, ChinaThe paper presents a framework for the seismic analysis of the coupled high-speed train-bridge with the isolation of friction pendulum bearing (FPB). Taking the rail irregularities as system’s self-excitation with the seismic as external excitation, the equation of motion of the train-bridge coupled system under earthquake is built up. A five-span simple-supported railway bridge is taken as an example, and the computer simulation method is used to establish the dynamic model of the train-bridge system with the isolation of FPB under earthquake. A train composed of eight 4-axle coaches of 35 degrees-of-freedom (DOF) is considered, and FPB is simulated by a force element which includes both nonlinear spring and damper characteristics and a hysteresis function. Backward differentiation formula and the mode superposition method are adopted in the calculation of coupling vibration of the train-bridge system. The dynamic responses of the train running on the bridge with the isolation of FPB and with the common spherical bearing (CSB) under earthquake are studied. The results show that FPB with a friction coefficient no less than 0.05, instead of CSB, can reduce the dynamic response of the train greatly; the faster the train speed and the higher the pier, the greater the effect of FPB. However, FPB may increase the dynamic response of the train when the seismic intensity exceeds 0.14 g.http://dx.doi.org/10.1155/2020/8714174
spellingShingle Xinmin Hong
Wenhua Guo
Zihao Wang
Seismic Analysis of Coupled High-Speed Train-Bridge with the Isolation of Friction Pendulum Bearing
Advances in Civil Engineering
title Seismic Analysis of Coupled High-Speed Train-Bridge with the Isolation of Friction Pendulum Bearing
title_full Seismic Analysis of Coupled High-Speed Train-Bridge with the Isolation of Friction Pendulum Bearing
title_fullStr Seismic Analysis of Coupled High-Speed Train-Bridge with the Isolation of Friction Pendulum Bearing
title_full_unstemmed Seismic Analysis of Coupled High-Speed Train-Bridge with the Isolation of Friction Pendulum Bearing
title_short Seismic Analysis of Coupled High-Speed Train-Bridge with the Isolation of Friction Pendulum Bearing
title_sort seismic analysis of coupled high speed train bridge with the isolation of friction pendulum bearing
url http://dx.doi.org/10.1155/2020/8714174
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AT zihaowang seismicanalysisofcoupledhighspeedtrainbridgewiththeisolationoffrictionpendulumbearing