Article
Engineering, Civil
Lara Bettinelli, Bernhard Glatz, Andreas Stollwitzer, Josef Fink
Summary: This study investigates the importance of considering vehicle-bridge-interaction effects in the computational determination of dynamic bridge vibrations, proposing methods to determine additional mass and damping for bridge structures. Results show that applying one of the redesigned approaches can better reflect the influence of vehicle-bridge-interaction, although there are observed application limitations due to structural and train properties.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Civil
Jiawang Zhan, Junjie You, Xuan Kong, Nan Zhang
Summary: This study proposes a new method to identify bridge frequencies from vehicles moving at a high speed by combining the responses of multiple vehicles, and verifies the effectiveness of the method through numerical simulations. The influence of track irregularity, vehicle speed, bridge stiffness, and bridge damping on the identification results is also analyzed.
ENGINEERING STRUCTURES
(2021)
Article
Mechanics
Paul Koenig, Christoph Adam
Summary: In this paper, a dynamic interaction model of the coupled system of railway bridge, foundation, subsoil, ballast, track, and high-speed train is presented. The model focuses on the longitudinal interaction between the track and the bridge structure, considering the flexibility of the ballast. The coupling of the bridge structure with the track is achieved using component mode synthesis technique.
Review
Chemistry, Multidisciplinary
Bin Yan, Wenfei Kuang, Rui Gan, Haoran Xie, Jie Huang
Summary: This paper systematically introduces the research status and modeling methods of the track-bridge interaction for large-span bridges of high-speed railway in China, and analyzes the characteristics of longitudinal force distribution. The practical application of the track-bridge interaction theory on extra-large-span bridges and under special conditions is discussed. It provides guidance for the improvement of the track-bridge interaction model and the design of large-span high-speed railway bridges in the future.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Electrical & Electronic
Yang Song, Fuchuan Duan, Zhigang Liu
Summary: This paper provides a theoretical explanation for the relationship between speed and interaction performance in the pantograph-catenary system. It is found that increasing speed can improve interaction performance in certain local speed regions. A validated model is used to reproduce this phenomenon, and a simple indicator is proposed to determine the local optimal speed based on the analysis of contact wire amplitude.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2022)
Article
Engineering, Geological
P. Galvin, A. Romero, E. Moliner, D. P. Connolly, M. D. Martinez-Rodrigo
Summary: The novel numerical methodology presented in this study offers advantages in solving the dynamic response of railway bridges considering soil-structure interaction, with minimal computational cost and the ability to deal with complex geometries and stratified soils. The method utilizes sub-structuring to split the problem into two interaction problems, leading to accurate results validated through experimental measurements and an alternative Finite Element-Boundary Element methodology.
BULLETIN OF EARTHQUAKE ENGINEERING
(2022)
Article
Acoustics
Chaozhi Ma, Liang Gao, Tao Xin, Xiaopei Cai, Mahantesh M. Nadakatti, Pu Wang
Summary: A dynamic model of multiple flexible wheelset-rail interactions was established to investigate wheel-rail dynamic resonance (W-RDR) and its induced modes, with a focus on wave transmissions and reflections (W-TF). The influence of wheelset flexibility and W-TF on W-RDR were clarified, and the initiation mechanism of rail corrugation was revealed based on corrugation growth rate. The results showed that wheelset flexibility has limited influence on vertical force resonances but significant contribution to friction power resonances.
JOURNAL OF SOUND AND VIBRATION
(2021)
Article
Acoustics
Chaozhi Ma, Liang Gao, Yang Xu, Xiaopei Cai, Bowen Hou, Liangliang Wang
Summary: This study proposes an improved vibration model to understand the wheel polygonal wear mechanism on high-speed railways. Simulation schemes and indices are introduced to measure the growth degree of the wheel polygon at each order, and the correlation between wheel polygonal wear and wheel-rail coupled resonances is studied. The results show that both the track-bed vibrations and the improved fastener model have an impact on wheel polygonal wear, while the track-bed broadband modal vibrations have a minor contribution.
JOURNAL OF SOUND AND VIBRATION
(2023)
Article
Acoustics
Yi-Wei Gu, Xin Nie, Ai-Guo Yan, Jia-Hua Zeng, Yu-Fei Liu, Yue-Xin Jiang
Summary: This paper investigates the characteristics of train-induced vibration and structure-borne noise of a high-speed railway steel-concrete composite bridge through testing a 5 x 50 m continuous bridge. Vibration acceleration response and radiated noise are measured, and a prediction model is established to explore the radiation spectrum characteristics. The dominant frequency range of vibration and structure-borne noise is found to be 20 to 1000 Hz. The acoustical contribution of the web at far-field site can reach 80% of the structure-borne noise. The setting of bottom concrete is effective in reducing vibration and noise.
Article
Engineering, Civil
Hongye Gou, Rui Xie, Chang Liu, Yi Bao, Qianhui Pu
Summary: This study aims to develop an analytical model to investigate the effects of long-term bridge deformation on track deformation, as well as the role of bridge-track interlayer degradation. Through mechanical analysis and validation using finite element models, this study provides a method for high-speed railway bridge design and evaluation.
Article
Engineering, Civil
Zhaowei Chen, Mengqi Zhang, Lang Wang, Zhihui Chen, Shengyang Zhu
Summary: A coupled dynamic model is established to study the mechanical characteristics of the gearrack system induced by pier settlement and discuss the dynamic influences of two common gear-rack connections on the adaptability and safety of the system. A safety control value of pier settlement for the large-slope railway in mountainous areas is proposed.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Mechanical
Chaozhi Ma, Liang Gao, Rixin Cui, Tao Xin
Summary: The study established a multi-vehicle-track coupled dynamic model to investigate the mechanism and distribution of high-order polygonal wear, identifying the impact of rail bending modes and explaining the distribution rule related to seasonality and wheelset position.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Transportation Science & Technology
Seunghoo Jeong, Hyunmin Kim, Sung Il Kim, Kyoung-Chan Lee
Summary: This study proposes a new method for evaluating the dynamic response amplification of HSR bridges using a multi-sensor fusion technique, which separates the total bridge response into static and dynamic responses and calculates the time-varying dynamic magnification ratio.
INTERNATIONAL JOURNAL OF RAIL TRANSPORTATION
(2022)
Article
Engineering, Civil
Xiao-Mei Yang, Chun-Xu Qu, Ting-Hua Yi, Hong-Nan Li, Hua Liu
Summary: For high-speed railway bridges in operation, it is crucial to study the coupling dynamic performance of train-bridge systems to avoid extreme vibrations that impact bridge safety. Research shows that the vibration of bridges during train passage is closely related to factors such as train speed, heavy axle loads, and span length.
INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
(2021)
Article
Engineering, Mechanical
Huailong Shi, Feng Gan, Fansong Li, Jinying Guo
Summary: The study focused on the wheel-rail interactions and vehicle dynamics of a high-speed rail vehicle with gauge-changeable wheelsets. Results showed that different rail profiles can affect the conicity of wheelsets, with worn treads being more sensitive to rail cants. The experiment also indicated that a 0.6 mm wheel-axle clearance may result in running instability at low speeds.
VEHICLE SYSTEM DYNAMICS
(2022)
