scholarly journals Influence of the ballasted track on the dynamic behaviour of steel railway bridges

ce/papers ◽  
2021 ◽  
Vol 4 (2-4) ◽  
pp. 2013-2020
Author(s):  
Andreas Stollwitzer ◽  
Josef Fink ◽  
Tahira Malik
Keyword(s):  
Dynamic Behaviour ◽  
Railway Bridges ◽  
Ballasted Track

Non-Stationary Random Vibration Analysis of Railway Bridges Under Moving Heavy-Haul Trains

2018 ◽  
Vol 18 (03) ◽  
pp. 1850035 ◽  
Author(s):  
Zhihui Zhu ◽  
Lidong Wang ◽  
Zhiwu Yu ◽  
Wei Gong ◽  
Yu Bai
Keyword(s):  
Random Vibration ◽  
Vertical Acceleration ◽  
Railway Bridges ◽  
Coupling System ◽  
Ballasted Track ◽  
Heavy Haul ◽  
Train Speed ◽  
Track Irregularity ◽  
Heavy Haul Trains ◽  
Track Bridge

This paper presents a non-stationary random vibration analysis of railway bridges under moving heavy-haul trains by the pseudo-excitation method (PEM) considering the train-track-bridge coupling dynamics. The train and the ballasted track-bridge are modeled by the multibody dynamics and finite element (FE) method, respectively. Based on the linearized wheel-rail interaction model, the equations of motion of the train-ballasted track-bridge coupling system are then derived. Meanwhile, the excitations between the rails and wheels caused by the random track irregularity are transformed into a series of deterministic pseudo-harmonic excitation vectors by the PEM. Then, the random vibration responses of the coupling system are obtained using a step-by-step integration method and the maximum responses are estimated using the 3[Formula: see text] rule for the Gaussian stochastic process. The proposed method is validated by the field measurement data collected from a simply-supported girder bridge (SSB) for heavy-haul trains in China. Finally, the effects of train speed, grade of track irregularity, and train type on the random dynamic behavior of six girder bridges for heavy-haul railways are investigated. The results show that the vertical acceleration and dynamic amplification factor (DAF) of the midspan of the SSB girders are influenced significantly by the train speed and track irregularity. With the increase in the vehicle axle-load, the vertical deflection-to-span ratio ([Formula: see text]) of the girders increases approximately linearly, but the DAF and vertical acceleration fail to show clear trend.

Contribution of tracks to dynamic behaviour of railway bridges

2018 ◽  
Vol 171 (4) ◽  
pp. 267-275 ◽  
Author(s):  
Hetty Bigelow ◽  
Benno Hoffmeister ◽  
Markus Feldmann ◽  
Volkmar Zabel
Keyword(s):  
Dynamic Behaviour ◽  
Railway Bridges

scholarly journals Ballasted track interaction effects in railway bridges with simply-supported spans composed by adjacent twin single-track decks

2021 ◽  
Vol 247 ◽  
pp. 113062
Author(s):  
J.C. Sánchez-Quesada ◽  
E. Moliner ◽  
A. Romero ◽  
P. Galvín ◽  
M.D. Martínez-Rodrigo
Keyword(s):  
Interaction Effects ◽  
Single Track ◽  
Railway Bridges ◽  
Simply Supported ◽  
Ballasted Track
Sign in / Sign up

Export Citation Format

Share Document