FEM Modeling and Experimental Tests of Timber Bridge Structure

Čecháková, V.; Rosmanit, Miroslav; Fojtík, Roman

doi:10.1016/j.proeng.2012.07.059

Cited by 19 publications

(7 citation statements)

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“…From the practical point of view the influence of various vehicle and bridge parameters is interested. The results obtained from numerical analyses are used in the process of design of optimal bridge parameters with respect to lifetime and reliability of the bridge structure [15].…”

Section: Discussionmentioning

confidence: 99%

FE modeling of moving load effect on two span bridge

Valašková¹,

Kuchárová²

2019

Vib. proced.

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The problem of simulation of moving load effect on bridges is a relatively old problem. It was induced by the collapse of the Chester Rail Bridge in England in the year 1847 and can be traced in the literature since the year 1849. The new generation of young research workers is capable to contribute to the solution of the problem with new findings. The contribution is devoted to the modeling of the vehicle motion along a two-span bridge in the environment of the program system ADINA. The task is solved as a plane problem. It described the creation of a discrete computational model of vehicle with 8 degrees of freedom. The bridge is modeled using beam elements. It is assumed that the vehicle enters the bridge already vibrant. The vehicle and bridge response is modeled when vehicle driving at the speed of 70 km/h. The time course of oscillation of vehicle model's characteristic points and the oscillation of mid spans of individual bridge fields are shown graphically. Important results are given in numerical form. The Newmark's method is used for the solution of equations of motion.

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Section: Discussionmentioning

confidence: 99%

FE modeling of moving load effect on two span bridge

Valašková¹,

Kuchárová²

2019

Vib. proced.

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“…A few studies in the literature have focused on the use of only timber barriers or the reinforcement of timber barriers with steel or fiber additives (Lohrey et al 1997;Ad 1999;Zhang et al 2004Zhang et al , 2006Bocchio et al 2001;Leijten 2000Leijten , 2001Davids et al 2006;Kubojima et al 2006;Watts and Morgan 2007;Faller et al 2009;Marzougui et al 2010;Wacker et al 2010;Goubel et al 2011;Cecháková et al 2012;Pilia et al 2012;Borovinšek et al 2013;Bielenberg et al 2014;Pilia and Maltinti 2014;Noda et al 2016; van de Kuilen 2019).…”

Section: Introductionmentioning

confidence: 99%

Renewable hybrid roadside barrier: Optimization of timber thickness

Yorur

Özcanan

Yumrutas

et al. 2022

BioRes

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Researchers have recently focused on new and original roadside barriers that prioritize aesthetic, and environmental concerns by employing natural materials. In this study, the safety performance (Acceleration Severity Index (ASI), Theorical Head Impact Velocity (THIV)), structural performance (Working Width (W), Exit Angle (α)), and failure analysis (visual deformation) of a newly developed Renewable Hybrid Barrier (RHB) system at different timber thicknesses were tried to be determined by pendulum crash test and Finite Element (FE) models. The FE models were calibrated and validated based on pendulum crash test results, and then the most suitable timber thickness in terms of safety and structural performance was determined via FE analyses. The results revealed that as the timber thickness decreased, the safety parameters, such as ASI and THIV, decreased, thus the barrier safety increased. However, it was observed that the deflection and deformations in the barrier increased as the timber thickness decreased. In this sense, the safest and the most structurally durable barrier was determined through conducting virtual optimization tests. Studies on diversification of the usage areas of natural/renewable materials should be increased in the future.

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“…The main reason for this is that the connections between the different structural parts have a large influence on the stiffness of the structure when the bridge is subjected to small amplitudes of vibration and, consequently, these connections must be modelled carefully. In fact, several studies [8][9][10] have shown that predicting the stiffness of the connections in the design phase is very challenging and that it can only be done accurately after completion of the bridge by calibrating the model against experimental measurements.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Dynamic Properties of Two Timber Footbridges Including Seasonal Effects

et al. 2021

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This paper deals with experimental and numerical dynamic analyses of two timber footbridges. Both bridges have a span of 35 m and consist of a timber deck supported by two timber arches. The main purpose is to investigate if the dynamic properties of the bridges are season dependent. To this end, experimental tests are performed during a cold day in winter and a warm day in spring in Sweden. The first bending and transverse mode frequencies increase 22% and 44%, respectively, due to temperature effects in the case of Vega Bridge. In the case of Hägernäs bridge, the corresponding values are 5% and 26%. For both bridges, the measured damping coefficients are similar in winter and spring. However, the damping coefficients for the first bending and transverse modes are different for both footbridges: about 1% for the Hägernäs bridge and 3% for the Vega bridge. Finite-element models are also implemented. Both numerical and experimental results show good correspondence. From the analyses performed, it is concluded that the connections between the different components of the bridges have a significant influence on the dynamic properties. In addition, the variation of the stiffness for the asphalt layer can explain the differences found in the natural frequencies between spring and winter. However, due to the uncertainties in the modelling of the asphalt layer, this conclusion must be taken with caution.

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FEM Modeling and Experimental Tests of Timber Bridge Structure

Cited by 19 publications

References 0 publications

FE modeling of moving load effect on two span bridge

FE modeling of moving load effect on two span bridge

Renewable hybrid roadside barrier: Optimization of timber thickness

Experimental and Numerical Dynamic Properties of Two Timber Footbridges Including Seasonal Effects

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