Development and Challenge of the Vehicle and Highway Bridges Dynamic Interaction

2013 ◽  
Vol 574 ◽  
pp. 135-150
Author(s):  
Jia Feng Liu ◽  
Yan Li
Keyword(s):  
Analytical Model ◽  
High Speed ◽  
Engineering Application ◽  
Highway Bridges ◽  
Dynamic Interaction ◽  
Dynamic Responses ◽  
Coupling Vibration ◽  
Safety Control ◽  
Main Research ◽  
Long Span

With the development of long-span flexible bridges and the increase of highway transportation, both the dynamic responses of highway bridges under high-speed and heavy vehicles and the safety control of vehicles have deserved general concerns. First, this paper briefly discussed some researches on coupling vibration of vehicle and highway-bridges, then roundly summarized main research achievements accounting on the vehicle analytical model, bridge analytical model, surface roughness of road, numerical method of vehicle-bridge coupling vibration and some other aspects. Meanwhile, some research trends and challenge on vehicle and bridge dynamic interaction in engineering application were pointed out.

A Comparative Study on Dynamic Wheel Loads of Multi-Axle Vehicle and Bridge Responses

2001 ◽  
Author(s):  
Chul Woo Kim ◽  
Mitsuo Kawatani
Keyword(s):  
Analytical Procedure ◽  
Three Dimensional ◽  
Highway Bridges ◽  
Dynamic Responses ◽  
Dynamic Factor ◽  
Wheel Load ◽  
Coupling Vibration ◽  
Moving Vehicle ◽  
Speed Parameter ◽  
Bridge Responses

Abstract To investigate relations between dynamic wheel loads of multi-axle vehicles on highway bridges and dynamic responses of bridge due to the vehicular loading, a three-dimensional dynamic analysis is carried out. Simultaneous differential equations for a coupling vibration of bridge and moving vehicle including roadway roughness are derived by means of modal analysis. The analytical wheel loads of vehicle model and responses of bridges are compared with experimental ones, to verify a validity of presented analytical procedure. Parametric investigations show that there exists resemblance between bounce motion of vehicle and bridge response. It can also be seen that the RMS based dynamic factor of dynamic wheel load can give an important information to predict the variation of impact factor of bridge due to speed condition as well as speed parameter.

scholarly journals High-Speed Train-Track-Bridge Dynamic Interaction considering Wheel-Rail Contact Nonlinearity due to Wheel Hollow Wear

2019 ◽  
Vol 2019 ◽  
pp. 1-18 ◽  
Author(s):  
Chao Chang ◽  
Liang Ling ◽  
Zhaoling Han ◽  
Kaiyun Wang ◽  
Wanming Zhai
Keyword(s):  
High Speed ◽  
Synthesis Method ◽  
Dynamic Interaction ◽  
High Speed Train ◽  
Train Track ◽  
High Speed Railway ◽  
Long Span ◽  
Continuous Girder Bridge ◽  
Girder Bridge ◽  
Track Bridge

Wheel hollow wear is a common form of wheel-surface damage in high-speed trains, which is of great concern and a potential threat to the service performance and safety of the high-speed railway system. At the same time, rail corridors in high-speed railways are extensively straightened through the addition of bridges. However, only few studies paid attention to the influence of wheel-profile wear on the train-track-bridge dynamic interaction. This paper reports a study of the high-speed train-track-bridge dynamic interactions under new and hollow worn wheel profiles. A nonlinear rigid-flexible coupled model of a Chinese high-speed train travelling on nonballasted tracks supported by a long-span continuous girder bridge is formulated. This modelling is based on the train-track-bridge interaction theory, the wheel-rail nonelliptical multipoint contact theory, and the modified Craig–Bampton modal synthesis method. The effects of wheel-rail nonlinearity caused by the wheel hollow wear are fully considered. The proposed model is applied to predict the vertical and lateral dynamic responses of the high-speed train-track-bridge system under new and worn wheel profiles, in which a high-speed train passing through a long-span continuous girder bridge at a speed of 350 km/h is considered. The numerical results show that the wheel hollow wear changes the geometric parameters of the wheel-rail contact and then deteriorates the train-track-bridge interactions. The worn wheels can increase the vibration response of the high-speed railway bridges.

Dynamic Interaction Aspects of Cable-Stayed Guideways for High Speed Ground Transportation

1974 ◽  
Vol 96 (2) ◽  
pp. 180-192 ◽  
Author(s):  
S. G. Meisenholder ◽  
P. Weidlinger
Keyword(s):  
Elastic Foundation ◽  
Conceptual Design ◽  
Traveling Wave ◽  
High Speed ◽  
Dynamic Interaction ◽  
Design Approach ◽  
Live Load ◽  
Beam On Elastic Foundation ◽  
Long Span ◽  
Cable Stays

This paper describes the dynamic considerations in the design of a long span (200 to 600 ft) cable-stayed guideways for future tracked levitated vehicles (TLV’s) which will be used for high speed ground transportation. A design approach is described in which a cable-stayed guideway structure can be synthesized to simulate the behavior of a beam on elastic foundation. This result is achieved by the “cable-tuning” approach, in which the cable stays are selected to achieve an equivalent uniform elastic foundation. The design approach insures that the live load deflection of the trackway beam is manifested as a traveling wave which moves horizontally at the same velocity as the vehicle, thereby minimizing dynamic interaction problems. Parametric results are presented for the dynamic response of a beam on elastic foundation. Optimum cable and tower configurations are developed for this guideway concept and a typical conceptual design is described.

Performance-Based Seismic Design of Long-Span Railway Arch Bridge

2012 ◽  
Vol 178-181 ◽  
pp. 2329-2332
Author(s):  
Chang Jiang Shao ◽  
Hua Ping Yang ◽  
Yong Jiu Qian
Keyword(s):  
Seismic Design ◽  
High Speed ◽  
Rapid Development ◽  
Highway Bridges ◽  
Engineering Practice ◽  
Design Code ◽  
Arch Bridge ◽  
Railway Bridges ◽  
Long Span ◽  
Seismic Design Code

New requirement is claimed for the seismic design method of long-span railway bridges with the rapid development of high-speed railway construction in China during the last decade. However, the present design code of our country seems not keep pace with the engineering practice. The existing method, although embodying the philosophy of performance-based earthquake resistance design framework, in ‘the seismic design code of railway engineering’ is only applicable to those girder bridges with spans smaller than 150m. Therefore, the authors introduce the anti-seismic design measures of highway bridges from the Current China Specification to check the seismic safety of a long-span railway arch bridge as an applying example. Different seismic fortification criterions and property objects of the structural system and components are supplied in order to optimize the anti-seism performance of this bridge. The numerical results show that this kind of approach is helpful to improve the dynamical properties and seismic performances of large span railway bridges.

Influences of Concrete Creep and Temperature Deformation on Vehilce Travelling across Bridge

2014 ◽  
Vol 556-562 ◽  
pp. 655-658 ◽  
Author(s):  
Xiao Ping Wang
Keyword(s):  
High Speed ◽  
Concrete Bridges ◽  
Temperature Deformation ◽  
Train Track ◽  
Concrete Creep ◽  
Coupling Vibration ◽  
Long Span ◽  
High Speed Trains ◽  
Track Irregularity ◽  
Track Bridge

When long-span pre-stressed concrete bridges are subjected to concrete creep and temperature load , bridge deck deformation will be aroused. Then the additional track irregularity will be generated. It brings about the result that the dynamic response of train-track-bridge system will be influenced. In this paper, with the train-track-bridge coupling vibration theory, a (90+180+90) m continuous beam-arch combination bridge located on a certain passenger line is analysised comparatively, by considering the effect of concrete creep and temperature deformation. The results show that, the track irregularity caused by the concrete creep and temperature deformation influence the wheel unloading rate and the vertical accelararion of the train so obviously with the speed increasing. It can be concluded that the track irregularity need to be considered, especially for high-speed trains.

Influencing Factors of Dynamic Performance of Jointless Turnout on Bridge in High-Speed Railway

2010 ◽  
Author(s):  
R. Chen ◽  
P. Wang ◽  
X. P. Chen
Keyword(s):  
High Speed ◽  
Dynamic Performance ◽  
Dynamic Responses ◽  
Wheel Load ◽  
Longitudinal Gradient ◽  
High Speed Railway ◽  
Coupling Vibration ◽  
Vertical Stiffness ◽  
Coupling System ◽  
Chinese Standard

Taking the case of 18# turnout (350km/h) laid on 6×32m continuous girder, a dynamic model for coupling system of vehicle and jointless turnout on bridge was established to analyze the factors that affected dynamic performance of jointless turnout on bridge, and several aspects were taken into consideration, i.e. train’s running quality, rail stress of turnout, vibration of turnout and bridge, and deformation, etc. It is shown that influenced by vibration and deformation of bridge, the train, turnout and bridge form a coupling vibration system, whose dynamic responses are stronger than those caused by train/turnout interaction on subgrade. Wheel/rail contact of turnout zone (especially the frog) has great effect on dynamic responses of jointless turnout on bridge, thus the nose rail height of frog should be optimized to mitigate the wheel load transition and its longitudinal gradient. When a train is passing a jointless turnout on bridge, a reasonable vertical stiffness for bridge is the key to keep its safety and comfort; as for the 32m continuous girder, the ratio of deflection to span should be ≤1/9000 under the ZK load (Chinese standard).

scholarly journals Permanent deformation limits of long-span track cable-stayed bridges based on service performance analysis

2020 ◽  
pp. 146134842097012
Author(s):  
Xiaogang Li ◽  
Mangmang Gao ◽  
Jianting Zhou ◽  
Xiaohu Chen ◽  
Shulin Tan
Keyword(s):  
Performance Analysis ◽  
Permanent Deformation ◽  
Evaluation Criteria ◽  
Service Performance ◽  
Coupling Vibration ◽  
Safety Control ◽  
Control Value ◽  
Long Span ◽  
Main Girder ◽  
Cable Stayed Bridges

With the continuous service time, long-span track cable-stayed bridges are inevitably affected by material time-varying and fatigue load periodic effects, and permanent down-deflection phenomenon is inevitable. The down-deflection of the main girder would lead to the irregularity of bridge deck, which would directly affect the running comfort and safety of the train. The permanent deformation control value should be set reasonably. In this paper, based on the research and analysis of domestic and foreign codes and standards, the evaluation criteria for the service performance of long-span track cable-stayed bridges was determined, aiming at the problem of deformation classification control in the service stage of the long-span track cable-stayed bridge. The limit of permanent deformation of main girder was analyzed, and the decision processing was put forward and applied to an engineering example. According to the vehicle-bridge coupling vibration analysis, the maximum vertical deformation safety control value in the service stage is L/400, and the pre-warning control value is L/500. With the non-permanent deformation value β deducted, the permanent deformation safety control value is L/400- β, and the pre-warning control value is L/500- β. The rationality of the grading control limit of permanent deformation based on service performance analysis has been verified by application analysis.

Dynamic Response of Bridges to Moving Trains: A Study on Effects of Concrete Creep and Temperature Deformation

2012 ◽  
Vol 193-194 ◽  
pp. 1179-1182 ◽  
Author(s):  
Wen Qiu Li ◽  
Yan Zhu ◽  
Xiao Zhen Li
Keyword(s):  
High Speed ◽  
Coupled System ◽  
Dynamic Responses ◽  
Effect Of Temperature ◽  
Temperature Deformation ◽  
Vertical Acceleration ◽  
Dynamic Feature ◽  
Wheel Load ◽  
Coupling Vibration ◽  
Track Irregularities

In this paper, a great deal of research undertaken to study the dynamic responses of a high-speed railway bridge subjected to moving trains. Based on coupling vibration analysis of a rigid frame-continuous bridge, the effect on the kinetic characteristics induced by track irregularities, temperature and creep is discussed. The results show that great changes occur in parameters of trains such as rate of wheel load reduction, the vertical acceleration and the vertical Sperling index when considering the effect of temperature and creep compared with regarding track irregularities only. It is recommended that the combination of track irregularities, temperature and creep is essential to evaluate dynamic feature of train-bridge coupled system for high-speed railways.

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