Based on Inclinometer to Measure Dynamic Deflection of High-Speed Railway Bridge

2013 ◽  
Vol 405-408 ◽  
pp. 3019-3026 ◽  
Author(s):  
Xian Long He ◽  
Li Zhen Zhao
Keyword(s):  
High Speed ◽  
Detection System ◽  
Good Method ◽  
Railway Bridge ◽  
High Speed Train ◽  
Loading Test ◽  
High Speed Railway ◽  
Deflection Measurement ◽  
Measurement Results ◽  
Beam Bridge

The dynamic deflection measurement is an important component to the bridge loading test of high-speed railway bridge. Using inclinometers to test the Dynamic deflection is a good method for High-Speed Railway bridge deflection detection. In this paper, we develop a new inclinometer and a new theory to fast calculate deflection. It has been use to detect the dynamic deflection of Baishui River bridge on FuZhou-WenZhou High-Speed Railway when high speed train runs across at kinds of speed. Results indicate: comparing with the measurement results of photoelectric deflection detection system, all dynamic deflection measurement results of inclinometers are very accuracy. Their deflection curves are also similar. All results also show: Using our inclinometers to test High-Speed Railway bridge dynamic deflection can get precise results and can satisfy the dynamic deflection measurement request of high-speed railway bridge. Comparing with other methods of dynamic deflection measurement, this method is very easy to operate., do not need stop the traffic, and not affected by weather, and not need a static reference point, can measure the dynamic deflection of any beam bridge.

The Security Study of Train Derailment on High-Speed Railway Bridge

2012 ◽  
Vol 446-449 ◽  
pp. 1144-1147 ◽  
Author(s):  
Yu Sen Lin ◽  
Li Hua Xin
Keyword(s):  
High Speed ◽  
Convergence Criterion ◽  
Railway Bridge ◽  
High Speed Railway ◽  
Train Derailment ◽  
Derailment Coefficient ◽  
Coupling System ◽  
Decrement Rate ◽  
Beam Bridge ◽  
Security Study

In this paper vehicle-bridge coupling system is divided into vehicle system and bridge system. The equations of vehicle vibration and bridge vibration are solved in numerical method, considered the displacement of wheel and rail as convergence criterion. The security of running train is studied on the hand of wheel-rail force, derailment coefficient, load decrement rate of wheel weight, and the reason of train derailing on high-speed railway bridge is analyzed. By the example of multiple span simple supported beam bridge, the result derived by this method is proved that the bridge meet train security and amenity requirement.

Numerical Seismic Analysis of Simply-Supported Girder Railway Bridge under High-Speed Train Load

2011 ◽  
Vol 80-81 ◽  
pp. 566-570
Author(s):  
Hui Wang ◽  
Guo Ding ◽  
Huan Tang ◽  
Ling Kun Chen
Keyword(s):  
High Speed ◽  
Seismic Analysis ◽  
Rapid Development ◽  
Railway Bridge ◽  
High Speed Train ◽  
Seismic Responses ◽  
Mass System ◽  
High Speed Railway ◽  
Simply Supported ◽  
Bridge System

Along with rapid development of high-speed railway in many countries, recently research on seismic response of high-speed railway bridge under train load has raised much concern among researchers. The whole bridge finite element model is establish to analysis the seismic responses of simply-supported girder railway bridge subjected to high-speed train in this paper, ICE series high speed vehicle is employed as train live load, the vehicle is simulated by moving spring-mass system, The track irregularities can be obtained by Simpack software, the birdge incluing superstructure and substructure is three-dimensional space beam element, the bottom of piers is proposed consolidated. elastic seismic responses of bridge system and elastic-plastic deformation of piers considering different train speeds are calculated. The calculation results indicate that, seismic responses of bridge system are increase with the increase of train speed and earthquake intensity, and the bottom of piers will step into elastic-plasticity stage under high-level earthquake, the plastic hinges occurred within 1.4 meters of bottom of pier. The numerical results can provide some references for design of high-speed railway bridge.

Railway bridge dynamics: development of a new high-speed train load model for dynamic analyses of train crossing

2021 ◽  
Author(s):  
Michael Reiterer ◽  
Andrei Firus ◽  
Alois Vorwagner ◽  
Geert Lombaert ◽  
Jens Schneider ◽  
...  
Keyword(s):  
Dynamic Load ◽  
High Speed ◽  
Railway Bridge ◽  
High Speed Train ◽  
Research Project ◽  
High Speed Railway ◽  
Railway Bridges ◽  
Load Model ◽  
Dynamic Analyses ◽  
Institute Of Technology

<p>In 2019, the German Federal Railway Authority commissioned the consortium TU Darmstadt, KU Leuven, AIT-Austrian Institute of Technology and REVOTEC to develop a new dynamic load model for high-speed railway bridges. It aims to cover the envelopes of the dynamic train signatures and acceleration responses for all currently operating trains and the current HSLM (high-speed load model), given in the Eurocode. In addition, the development of the new load model should also include possible configurations of fast freight trains and future train configurations. An overview of the planned content of the research project and selected results of the current work will be presented.</p>

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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