Abstract
In this work an analysis of the dynamic response of a cable-stayed footbridge to mining tremors typical for two main regions of mining activity in Poland, i.e. the Legnica-Glogow Copper District (LGCD) and the Upper Silesian Coal Basin (USCB) is presented. For analysis, a 3-D finite element (FE) model of the structure was created in the ABAQUS/Standard software program. As a final result, the dynamic responses of the footbridge to the typical mining tremors were delivered. For this stage, the numerical simulations were conducted with the non-uniform kinematic excitation as well as with the uniform kinematic excitation. Finally, the evaluation of two calculation approaches was also made for the studied structure.
Highlights
The seismic assessment of the dynamic response of civil engineering structures to mining tremors became a task of studies in Poland [1], since energy and amplitudes of vibrations caused by high-energy mining shocks are comparable with amplitudes of vibrations resulting from small earthquakes
For seismic assessment of pedestrian bridges, it is reasonable to consider the type of their foundation, i.e. bridges are multiple-support structures [3,4]
This paper presents the dynamic response of a cable-stayed footbridge to mining tremors registered in two main mining activity regions in Poland
Summary
The seismic assessment of the dynamic response of civil engineering structures to mining tremors became a task of studies in Poland [1], since energy and amplitudes of vibrations caused by high-energy mining shocks are comparable with amplitudes of vibrations resulting from small earthquakes. Footbridges are exposed to this type dynamic loading. For seismic assessment of pedestrian bridges, it is reasonable to consider the type of their foundation, i.e. bridges are multiple-support structures [3,4]. This paper presents the dynamic response of a cable-stayed footbridge to mining tremors registered in two main mining activity regions in Poland. The main objective of the study was to recognize the influence of the spatially varying ground motion to the dynamic assessment of the footbridge. The evaluation of two calculation approaches, i.e. with uniform as well as non-uniform kinematic excitation, is undertaken
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