Seismic optimization of high-speed railway bridges considering the running safety of trains in normal service

2022 ◽  
pp. 1-16
Author(s):  
Qiong Gao ◽  
Menggang Yang ◽  
Dongliang Meng
Keyword(s):  
High Speed ◽  
High Speed Railway ◽  
Railway Bridges ◽  
Running Safety

Mapping relationship between dynamic responses of high-speed trains and additional bridge deformations

2020 ◽  
pp. 107754632093689
Author(s):  
Hongye Gou ◽  
Chang Liu ◽  
Hui Hua ◽  
Yi Bao ◽  
Qianhui Pu
Keyword(s):  
High Speed ◽  
Coupled Model ◽  
Dynamic Responses ◽  
High Speed Railway ◽  
Railway Bridges ◽  
Running Safety ◽  
High Speed Trains ◽  
Track Bridge ◽  
The Relationship ◽  
Track Deformation

Deformations of high-speed railways accumulate over time and affect the geometry of the track, thus affecting the running safety of trains. This article proposes a new method to map the relationship between dynamic responses of high-speed trains and additional bridge deformations. A train–track–bridge coupled model is established to determine relationship between the dynamic responses (e.g. accelerations and wheel–rail forces) of the high-speed trains and the track deformations caused by bridge pier settlement, girder end rotation, and girder camber. The dynamic responses are correlated with the track deformation. The mapping relationship between bridge deformations and running safety of trains is determined. To satisfy the requirements of safety and riding comfort, the suggested upper thresholds of pier settlement, girder end rotation, and girder camber are 22.6 mm, 0.92‰ rad, and 17.2 mm, respectively. This study provides a method that is convenient for engineers in evaluation and maintenance of high-speed railway bridges.

Aerodynamic effect of wind barriers and running safety of trains on high-speed railway bridges under cross winds

2015 ◽  
Vol 20 (2) ◽  
pp. 213-236 ◽  
Author(s):  
Weiwei Guo ◽  
He Xia ◽  
Raid Karoumi ◽  
Tian Zhang ◽  
Xiaozhen Li
Keyword(s):  
High Speed ◽  
High Speed Railway ◽  
Railway Bridges ◽  
Running Safety ◽  
Aerodynamic Effect

Numerical Model Updating Technique for Estimating Load Carrying Capacities of High Speed Railway Bridges

2016 ◽  
Vol 106 (8) ◽  
pp. 490-497
Author(s):  
Dong-Uk PARK ◽  
Jae-Bong KIM ◽  
Nam-Sik KIM ◽  
Sung-Il KIM
Keyword(s):  
Numerical Model ◽  
High Speed ◽  
Model Updating ◽  
High Speed Railway ◽  
Railway Bridges ◽  
Load Carrying

Design of High-Speed Railway Bridges with Earthquakes in the United States

2018 ◽  
Vol 29 (1) ◽  
pp. 18-25 ◽  
Author(s):  
Yinghong Cao ◽  
Todd Ude ◽  
Daniel Getter ◽  
Brendan Gill
Keyword(s):  
United States ◽  
High Speed ◽  
The United States ◽  
High Speed Railway ◽  
Railway Bridges

Temperature Monitoring of High-Speed Railway Bridges in Mountainous Areas

2018 ◽  
Vol 28 (3) ◽  
pp. 288-295 ◽  
Author(s):  
Gonglian Dai ◽  
Yu Tang ◽  
Jinbao Liang ◽  
Linghao Yang ◽  
Y. Frank Chen
Keyword(s):  
High Speed ◽  
Temperature Monitoring ◽  
Mountainous Areas ◽  
High Speed Railway ◽  
Railway Bridges
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