TY - JOUR
T1 - In-situ test and dynamic response of a double-deck tied-arch bridge
AU - Gou, Hongye
AU - Zhou, Wen
AU - Chen, Genda
AU - Bao, Yi
AU - Pu, Qianhui
N1 - Publisher Copyright:
© 2018 Techno-Press, Ltd.
PY - 2018/4/25
Y1 - 2018/4/25
N2 - In this study, in-situ dynamic tests of the world's longest steel box tied-arch bridge over the Yangtze River, China, are reported. The double deck bridge supports highway and monorail systems at upper and lower levels, respectively. Strain, displacement, and acceleration responses were measured and used to investigate the vibration characteristics of the bridge when excited by running trains and/or trucks at a speed of 5-60 km/h, train braking, and truck bouncing. Impact factors were correlated with the running speed of trains and trucks. A three-dimensional finite element model of the coupled monorail-train-bridge vibration system accounting for track irregularities was established to understand the system behavior and validated by the experimental results. Truck bouncing was the dominant impact factor on bridge responses. The running speed of vehicles determined the riding comfort of traveling trains.
AB - In this study, in-situ dynamic tests of the world's longest steel box tied-arch bridge over the Yangtze River, China, are reported. The double deck bridge supports highway and monorail systems at upper and lower levels, respectively. Strain, displacement, and acceleration responses were measured and used to investigate the vibration characteristics of the bridge when excited by running trains and/or trucks at a speed of 5-60 km/h, train braking, and truck bouncing. Impact factors were correlated with the running speed of trains and trucks. A three-dimensional finite element model of the coupled monorail-train-bridge vibration system accounting for track irregularities was established to understand the system behavior and validated by the experimental results. Truck bouncing was the dominant impact factor on bridge responses. The running speed of vehicles determined the riding comfort of traveling trains.
KW - Double-deck tied-arch bridge
KW - Finite element analysis
KW - Impact
KW - In-situ dynamic test
KW - Riding comfort
KW - Straddle-type monorail
KW - Vibration
UR - http://www.scopus.com/inward/record.url?scp=85046085695&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85046085695&partnerID=8YFLogxK
U2 - 10.12989/scs.2018.27.2.161
DO - 10.12989/scs.2018.27.2.161
M3 - Article
AN - SCOPUS:85046085695
SN - 1229-9367
VL - 27
SP - 161
EP - 175
JO - Steel and Composite Structures
JF - Steel and Composite Structures
IS - 2
ER -