Two span bridge under moving load

Kuchárová, Daniela; Melcer, Jozef

doi:10.21595/vp.2019.20607

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…1. One application of such a computational model was already introduced in [17]. We need to solve two problems when we want to use such a computational model.…”

Section: Model-based On Classical Dynamicsmentioning

confidence: 99%

Two-span bridge under moving load – numerical and experimental approach

Valašková¹,

Kuchárová²,

Melcer³

2020

J. vibroeng.

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From the point of view of bridge structures, the moving load is one of the most important components of the load. The analysis of the influence of moving load on bridges is carried out numerically or experimentally and can be traced in the literature since the year 1849. The first impulse was the collapse of the Chester Rail Bridge in England in the year 1847. The present paper analyses the effect of the moving load on a two-span bridge, both numerical and experimental way. The planar model of the vehicle and the bridge is adopted. The bridge is modeled as Bernoulli-Euler beam. The heavy vehicle is modeled as a discrete computational model with 8 degrees of freedom. Two approaches are used in numerical modeling. For the first time, the task is solved by the finite element method in the environment of the program system ADINA. The Newmark's method is used for the solution of equations of motion. The classic approach is used for the second time. A discrete computational model of a bridge with two degrees of freedom is used. Equations of motion are solved numerically in the environment of program system MATLAB by the Runge-Kutta 4th order method. The influence of vehicle speed on vertical deflections in the middle of individual bridge fields is analyzed in the speed range from 0 to 130 km/h with a step of 5 km/h. The detailed comparison of both numerical approaches is made at a vehicle speed of 70 km/h. The deflections of the bridge and the deflection of the vehicle are compared with each other. The correctness of the assumptions used in the numerical solutions was verified by measurement on a model beam in the laboratory. The results of the experimental tests were compared with the results of the numerical solution.

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“…1. One application of such a computational model was already introduced in [17]. We need to solve two problems when we want to use such a computational model.…”

Section: Model-based On Classical Dynamicsmentioning

confidence: 99%

Two-span bridge under moving load – numerical and experimental approach

Valašková¹,

Kuchárová²,

Melcer³

2020

J. vibroeng.

Self Cite

View full text Add to dashboard Cite

show abstract

“…For the description of the unevenness in the frequency domain, the power spectral densities are used and the interrelationships of the individual profiles are evaluated by correlation functions. Applications in practice are different [3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Statistical characteristics of sources of vehicle kinematic excitation

2020

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The longitudinal and transverse road profiles represent the functions of a random variable from a mathematical point of view. It is appropriate to use methods of probability theory and mathematical statistics for their description. The unevenness of the runway surface is the main source of the vehicle's kinematic excitation. This paper describes the statistical properties of the mapped road profiles. It shows a way of categorizing road surface quality based on the power spectral density of unevenness. The interrelationships between the individual points of the profile and the profiles with one another are evaluated by correlation functions.

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Numerical simulation of two-span bridge response on bridge spans ratio

Melcer¹

2022

International Conference of Numerical Analysis and Applied Mathematics Icnaam 2020

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Two span bridge under moving load

Cited by 3 publications

References 4 publications

Two-span bridge under moving load – numerical and experimental approach

Two-span bridge under moving load – numerical and experimental approach

Statistical characteristics of sources of vehicle kinematic excitation

Numerical simulation of two-span bridge response on bridge spans ratio

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