Dynamic response limit of high-speed railway bridge under earthquake considering running safety performance of train

2021 ◽  
Vol 28 (3) ◽  
pp. 968-980
Author(s):  
Xiang Liu ◽  
Li-zhong Jiang ◽  
Ping Xiang ◽  
Zhi-peng Lai ◽  
Yu-lin Feng ◽  
...  
Keyword(s):  
Dynamic Response ◽  
High Speed ◽  
Safety Performance ◽  
Railway Bridge ◽  
High Speed Railway ◽  
Running Safety

scholarly journals Early-Warning Method of Train Running Safety of a High-Speed Railway Bridge Based on Transverse Vibration Monitoring

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
You-Liang Ding ◽  
Peng Sun ◽  
Gao-Xin Wang ◽  
Yong-Sheng Song ◽  
Lai-Yi Wu ◽  
...  
Keyword(s):  
Early Warning ◽  
Transverse Vibration ◽  
High Speed ◽  
Vibration Monitoring ◽  
Railway Bridge ◽  
High Speed Railway ◽  
Running Safety ◽  
Pca Method ◽  
Main Girder ◽  
Fitting Model

Making use of long-term transverse vibration monitoring data of DaShengGuan Bridge, the early-warning method of train running safety of the high-speed railway bridge is established by adopting principal component analysis (PCA) method. Firstly, the root mean square (RMS) of the transverse acceleration of the main girder is used as the monitoring parameter for the train running safety. The correlation model between the RMS values measured from different positions is further adopted as the evaluating model for the train running safety. Finally, the effects of the environmental changes on the evaluating model are eliminated using the PCA method and the warning index for the train running safety is further constructed. The analysis results show that the correlation between the RMS values of the accelerations from different measuring positions on the main girder can be analyzed by a quadratic polynomial fitting model. The PCA method can effectively remove the environmental effects on the quadratic polynomial fitting model. The proposed warning method provides a good capability for detecting the abnormal changes of the measured transverse accelerations and hence it is suitable for early-warning of the train running safety.

Dynamic Response of High-Speed Railway Bridge Decks with Beams Transverse to the Direction of the Track

2014 ◽  
Vol 19 (11) ◽  
pp. 04014047 ◽  
Author(s):  
Antonio Carnerero Ruiz ◽  
Tomás Ripa Alonso ◽  
Celso Iglesias Pérez
Keyword(s):  
Dynamic Response ◽  
High Speed ◽  
Bridge Decks ◽  
Railway Bridge ◽  
High Speed Railway

Study on Transverse Linear Stiffness of Bridge Piers in a High-Speed Railway

2012 ◽  
Vol 594-597 ◽  
pp. 1489-1493
Author(s):  
Heng Li ◽  
Hong Duan ◽  
Xiao Zhen Li ◽  
Chun Sheng Shan
Keyword(s):  
Dynamic Response ◽  
Dynamic Analysis ◽  
High Speed ◽  
Coupled System ◽  
Dynamic Responses ◽  
Bridge Piers ◽  
Railway Bridge ◽  
Analysis Program ◽  
High Speed Railway ◽  
The Relationship

Based on the theory of vehicle-bridge coupled vibrations, the influence of transverse linear stiffness of double column piers on dynamic response of the train and bridge is investigated. A dynamic model of vehicle-bridge coupled system is established to analyze a high-speed railway bridge by BDAP software (Bridge Dynamic Analysis Program). By comparing the dynamic responses of piers which have different transverse linear stiffness, the characteristics of the relationship between the transverse linear stiffness of pier, the height of pier and transverse dynamic response are summarized, additionally some suggested values for transverse linear stiffness of piers are given to offer guidance for the design and construction of high-speed railway bridge.

Model test of the group piles foundation of a high-speed railway bridge in mined-out area

2016 ◽  
Vol 10 (4) ◽  
pp. 488-498 ◽  
Author(s):  
Xin Liang ◽  
Qian-gong Cheng ◽  
Jiu-jiang Wu ◽  
Jian-ming Chen
Keyword(s):  
Model Test ◽  
High Speed ◽  
Railway Bridge ◽  
High Speed Railway ◽  
Group Piles
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