TY - JOUR
T1 - Dynamic behavior of hybrid framed arch railway bridge under moving trains
AU - Gou, Hongye
AU - Long, Hao
AU - Bao, Yi
AU - Chen, Genda
AU - Pu, Qianhui
N1 - Publisher Copyright:
© 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group.
PY - 2019/8/3
Y1 - 2019/8/3
N2 - In this study, the dynamic behavior of a concrete-filled steel tube (CFST) hybrid framed arch railway bridge under moving trains are investigated through an in-site dynamic test. The bridge was tested under train loadings in different scenarios and at different speeds of the trains. The free vibration characteristics, strain, displacement, and acceleration of the bridge structure were measured to evaluate the dynamic responses of the train-bridge coupling system. A three-dimensional finite element model, which took into account the train-bridge coupling and track irregularities, was established to analyze the behaviors of the train-bridge system. The model was validated against the in situ test results. The impact effect on the girder was greater than that of the arch frame. The acceleration responses of the trains on the bridge increased with the train’s speed. The riding comfort of the trains was evaluated based on the measured dynamic responses of trains.
AB - In this study, the dynamic behavior of a concrete-filled steel tube (CFST) hybrid framed arch railway bridge under moving trains are investigated through an in-site dynamic test. The bridge was tested under train loadings in different scenarios and at different speeds of the trains. The free vibration characteristics, strain, displacement, and acceleration of the bridge structure were measured to evaluate the dynamic responses of the train-bridge coupling system. A three-dimensional finite element model, which took into account the train-bridge coupling and track irregularities, was established to analyze the behaviors of the train-bridge system. The model was validated against the in situ test results. The impact effect on the girder was greater than that of the arch frame. The acceleration responses of the trains on the bridge increased with the train’s speed. The riding comfort of the trains was evaluated based on the measured dynamic responses of trains.
KW - Hybrid framed arch bridge
KW - dynamic response
KW - finite element model
KW - impact effect
KW - in-site dynamic test
KW - riding comfort
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U2 - 10.1080/15732479.2019.1594314
DO - 10.1080/15732479.2019.1594314
M3 - Article
AN - SCOPUS:85063746137
SN - 1573-2479
VL - 15
SP - 1015
EP - 1024
JO - Structure and Infrastructure Engineering
JF - Structure and Infrastructure Engineering
IS - 8
ER -