Dynamic effect of high-speed trains on simple bridge structures

2014 ◽  
Vol 51 (4) ◽  
pp. 581-599 ◽  
Author(s):  
Christoph Adam ◽  
Patrick Salcher
Keyword(s):  
High Speed ◽  
Dynamic Effect ◽  
Bridge Structures ◽  
High Speed Trains

Three-dimensional analyses of two high-speed trains crossing on a bridge

2003 ◽  
Vol 217 (2) ◽  
pp. 99-110
Author(s):  
H-T Lin ◽  
S-H Ju
Keyword(s):  
Finite Element ◽  
Dynamic Response ◽  
High Speed ◽  
Three Dimensional ◽  
Dynamic Effect ◽  
Response Ratio ◽  
Element Analysis ◽  
Dynamic Finite Element Analysis ◽  
High Speed Trains ◽  
The One

This paper investigates the dynamic characteristics of the three-dimensional vehicle-bridge system when two high-speed trains are crossing on a bridge. Multispan bridges with slender piers and simply supported beams were used in the dynamic finite element analysis. A response ratio (RR) was defined in this study to represent the ratio of the vehicle-bridge interaction of two-way trains to that of a one-way train. The finite element results indicate that this ratio increases significantly when two-way trains run near the same speed, and the maximum value is approximately equal to or smaller than two for the vertical dynamic response. This means that the maximum dynamic response of the two-way trains is at most twice that of the one-way train. When the two-way train speeds are sufficiently different, the response ratio approaches one on average, which means that the dynamic effect of the two-way train is similar to that of the one-way train. Finite element results also indicate that the averaged response ratio in the three global directions is about 1.65 when the two-way trains run at the same speed.

Ground vibration induced by high-speed trains on bridge structures

Noise Notes ◽  
2013 ◽  
Vol 12 (2) ◽  
pp. 3-14
Author(s):  
Yit-Jin Chen ◽  
Ting-Jui Chiu ◽  
Kuo-Yen Chen
Keyword(s):  
High Speed ◽  
Ground Vibration ◽  
Bridge Structures ◽  
High Speed Trains

scholarly journals Justification of the bridge span vertical stiffness on high-speed railways

2019 ◽  
Vol 135 ◽  
pp. 03065 ◽  
Author(s):  
Leonid Diachenko ◽  
Andrey Benin
Keyword(s):  
Traffic Safety ◽  
High Speed ◽  
Movement Pattern ◽  
Passenger Car ◽  
Vertical Stiffness ◽  
Safety Requirements ◽  
Girder Bridges ◽  
Bridge Span ◽  
Bridge Structures ◽  
High Speed Trains

When designing bridges on high-speed railways, special attention should be paid to ensuring the safety of train traffic and the comfort of passengers. Excessive structure deformations (both elastic and non-elastic) result in unfavorable irregularities in the train movement pattern on the bridge and so can lead to violation of the traffic safety requirements as well as to vibration and acceleration of the train body, which is inadmissible due to its effect on the human body or the transported goods. In this paper, based on numerical simulation, the results of the study of the motion of a high-speed train along bridge structures of the dynamic bridgetrain interaction was performed with respect to various models of high-speed trains running along the bridges. The obtained dependences help to provide a practical assessment of high-speed passenger car dynamics and passenger comfort under the most unfavorable conditions, when the train is running along a multi-span bridge. For these purposes, the dependences of the admissible value of the relative vertical deflection are presented, based on the envelope curves that show the typical dynamic passenger car parameters (natural frequency of car oscillations) and Corresponding with their oscillations on the multi-span girder bridges with various lengths

scholarly journals Comparison of Signal-Analysis Techniques for Seismic Detection System for High-Speed Train Data: Effect of Bridge Structures

Sensors ◽  
2020 ◽  
Vol 20 (23) ◽  
pp. 6805
Author(s):  
Mintaek Yoo ◽  
Jae Sang Moon
Keyword(s):  
High Speed ◽  
Detection System ◽  
Warning System ◽  
Data Sets ◽  
Acceleration Data ◽  
Bridge Structures ◽  
High Speed Trains ◽  
Analysis System ◽  
Data Analysis System ◽  
Short Time

This study evaluated the earthquake warning system for high-speed trains using onboard accelerometers instead of expensive seismometers. Onboard accelerometers measure the train data additional to the earthquake acceleration. The measured earthquake acceleration could also be modified by railroad-supporting bridges. To develop the data analysis system, the virtual onboard data sets are synthesized using the train acceleration data and earthquake data. Not only the earthquake acceleration data but also the earthquake responses of bridges are used for the virtual onboard data synthesis. For the analysis of synthesized data, the short-time Fourier Transform (STFT), the wavelet transform (WT), and Wigner–Ville Distribution (WVD) methods have been compared. Results show that WVD provides the best detection performance while the computational costs are large.

Evaluation of ground vibration induced by high-speed trains on bridge structures

2011 ◽  
Vol 59 (4) ◽  
pp. 372 ◽  
Author(s):  
Yit-Jin Chen ◽  
Ting-Jui Chiu ◽  
Kuo-Yen Chen
Keyword(s):  
High Speed ◽  
Ground Vibration ◽  
Bridge Structures ◽  
High Speed Trains

scholarly journals The Influence of Trains on the Seismic Response of Simply-Supported Beam Bridges with Different Pier Heights Expressed through a Safety Factor

2021 ◽  
Author(s):  
Lizhong Jiang ◽  
Kang Peng ◽  
Jian Yu ◽  
Wangbao Zhou ◽  
Yongjian Zuo
Keyword(s):  
Seismic Response ◽  
Safety Factor ◽  
High Speed ◽  
Dynamic Effect ◽  
Track Structure ◽  
Simply Supported Beam ◽  
Simply Supported ◽  
Bridge Structures ◽  
Track Bridge ◽  
Bridge System

Abstract With the extension of high-speed railways to high-intensity earthquake regions, it is impossible to avoid structural vibrations due to the joint action of trains and earthquakes. Therefore, it is of great significance to study the influence trains on bridge structures exposed to earthquakes. In this paper, a coupled finite element analysis model of a high-speed railway vehicle-bridge was established by considering a simply-supported beam bridge with the China Railway Track System (CRTS) II plate and the CRH2C high-speed train. The correctness of the model was experimentally verified. By considering the ground motion randomness, the influence of the train on the response of the bridge structure exposed to an earthquake was analyzed. Also, the influence level of the running train on the seismic response of bridge structures with different pier heights was studied. The results revealed that the train dynamic effect significantly reduced seismic responses of piers and supports, and that the effect itself decreased with the pier height increase. Furthermore, the dynamic effect of the train increased the seismic response of the track structure, while the bridge pier height had little influence on the dynamic efficiency of the track structure. For different pier heights, the probability distribution model of the train dynamic effect for the track-bridge system seismic response was considered as the normal distribution. This indicated that the seismic response of the track-bridge system under vehicle condition could be simplified as the product of the seismic response and safety factor under no vehicle condition.

SPECIFIC FEATURES OF DYNAMIC INTERACTION OF MAGNETIC–LEVITATION HIGH-SPEED TRANSPORT AND BRIDGE SUPERSTRUCTURES

2018 ◽  
pp. 111-120 ◽  
Author(s):  
Georgy Igolkin ◽  
Leonid Dyachenko ◽  
Vladimir Smirnov ◽  
Pavel Pegin
Keyword(s):  
High Speed ◽  
Magnetic Levitation ◽  
Practical Importance ◽  
Dynamic Effect ◽  
Calculation Model ◽  
Similar Data ◽  
High Speed Rail ◽  
Bridge Superstructures ◽  
Bridge Structures ◽  
Bridge Superstructure

Objective: To determine key parameters for calculating dynamic effect of magnetic-levitation highspeed transport on bridge structures, carry out a dynamic analysis, and check the obtained results against experimental data and compare them with similar results on high-speed railways. Methods: In the course of the study, the method of direct integration of the dynamic problem of mo ving a mobile load along the bridge superstructure was used. Results: Computational model of a magnetic-levitation high-speed train was developed. A set of dynamic calculations was performed. Data on the magnitude of dynamic reaction of the bridge superstructure during the movement of a magnetic-levitation train were obtained. Values of the dynamic coefficient for mobile load in the speed range of up to 1000 km/h were calculated. Practical importance: Results obtained in the course of the study and the comparison made with similar data for high-speed rail transport have confirmed a significant decrease in the dynamic response of bridge superstructures when magnetic-levitation technologies are deployed. The calculation model thus developed opens up broad prospects for further research.

scholarly journals Study of dynamic Impact of Speed Trains on Bridge Structures

2021 ◽  
Vol 15 ◽  
pp. 30-36
Author(s):  
Hakim Siguerdjidjene ◽  
Leonid Konstantinovich Dyachenko
Keyword(s):  
High Speed ◽  
Maximum Speed ◽  
Vibration Modes ◽  
Resonant Vibration ◽  
Dynamic Impact ◽  
Bridge Structures ◽  
High Speed Trains ◽  
Speed Up ◽  
Train Speed ◽  
Vertical Accelerations

This research presents a study of the dynamic impact of high-speed trains moving on continuous and discontinuous span bridges. As an example of this study, a continuous span ballast bridge project with a total length of 174 m has been adopted, according to the scheme 27+ 3 × 40+ 27 m, allows us to analyze the dynamic impact of displacement of different trains at a speed range of 100km / h to a maximum speed of 300km / h, as well as to make a comparison of the dynamic behavior of this continuous-span HSR bridge from the discontinuous span bridge systems with lengths of 27m and 40m, and draw conclusions about the dependence of the maximum dynamic coefficients and the vertical accelerations at the midpoints of the span bridges as a function of the moving speed of the deferent trains. The resolution of the dynamic problem of moving loads during design and calculation is based on the modeling of the Bridge-Train system by the complex program, realized by the finite element method (FEM). In this work, for the numerical simulation of dynamic problems, Sofistik software was used. The results show that the increase of train speed up to 300 km / h, it is possible to manifest resonant vibration modes of the structures in span. The results show that the increase of train speed up to 300 km / h, it is possible to manifest resonant vibration modes of the structures in span.

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