Analytical and Experimental Approach for Assessing Vibration Serviceability of Highway Bridges Due to Heavy Vehicle Traffic

Abstract

The major goals of this paper are to evaluate the serviceability of bridges with vibration problems among these structures in actual use, and to establish the evaluation criteria based on the evaluation results. To accomplish these goals, the vehicle's weight, moving velocity, displacement from the measurement position, and acceleration were measured through the field test to evaluate the bridge's serviceability with respect to its vibration characteristics. Furthermore, the vibration characteristics of the bridge were analyzed with respect to various factors that influence its vibration. For this purpose, the three-axle truck used in the field test was modelled as the moving vehicle with 8 degrees of freedom, and the bridge considered was modelled using the frame element. According to the comparison of the analytical and experimental results, the analytical method that was used to evaluate the bridge's vibration serviceability as suggested in this paper based on the results of the analysis and field test is feasible.

Comparison of Bridge Dynamic Amplifications due to Articulated 5-Axle Trucks and Large Cranes

“…Even though they could be expected to have special permits and escort vehicles, they are found mixed with normal traffic and travelling close to the speed limit. There are a lot of theoretical investigations and experimental records on bridge dynamics due to traffic, but they are mainly focused on normal vehicle types such as 2-or 5-axle trucks (Harris et al 2007;Lee et al 2009). The aim of this paper is to address the bridge dynamics induced by crane-type vehicles and how they compare to 5-axle articulated trucks for a variety of span lengths and road conditions.…”

Stroboholography for the Analysis of Vibration Modes of Mechanical Systems

“…For the analysis of vibrational processes of the objects, which are excited by harmonic and nonharmonic signals it is very important to carry out the qualitative and quantitative analysis of vibrations distribution on the surface within a single period [18,19]. In this case, it is reasonable to use the stroboholography method.…”

Validation of numerical models of concrete box bridges based on load test results

“…-tests under dynamic loads -produced by heavy lorries crossing the structure -focused on the determination of the natural frequencies and the corresponding mode shapes of bridge vibration based on analysis of structure dynamic displacements and vibration accelerations, using the methodology presented in [10][11][12].…”