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Open AccessArticle

Application of EPS Geofoam to a Soil–Steel Bridge to Reduce Seismic Excitations

Faculty of Civil Engineering and Architecture, Opole University of Technology, 45-758 Opole, Poland
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Geosciences 2019, 9(10), 448; https://doi.org/10.3390/geosciences9100448
Received: 25 September 2019 / Revised: 16 October 2019 / Accepted: 17 October 2019 / Published: 21 October 2019
There have only been a limited number of analyses of soil–steel bridges under seismic and anthropogenic (rockburst) excitations. Rockbursts are phenomena similar to low-intensity natural earthquakes. They can be observed in Poland (Upper and Lower Silesia) as well as in many parts of the world where coal and gas are mined. The influence of rockbursts and natural earthquakes on soil–steel bridges should be investigated because the ground motions caused by these two kinds of excitations differ. In the present paper, a non-linear analysis of a soil–steel bridge was carried out. Expanded polystyrene (EPS) geofoam blocks were used in a numerical model of the soil–steel bridge to buffer the seismic wave induced by a rockburst (coming from a coal mine) as well as a natural earthquake (El Centro record). The analyzed soil–steel bridge had two closed pipe arches in its cross-section. The span of the shells was 4.40 m and the height of the shells was 2.80 m. The numerical analysis was conducted using the DIANA program based on the finite element method (FEM). The paper presents the FEM results of a 3D numerical study of a soil–steel bridge both with and without the application of the EPS geofoam under seismic excitations. The obtained results can be interesting to bridge engineers and scientists dealing with the design and analysis of bridges situated in seismic and mining areas. View Full-Text
Keywords: soil–steel bridge; EPS; seismic analysis soil–steel bridge; EPS; seismic analysis
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Maleska, T.; Nowacka, J.; Beben, D. Application of EPS Geofoam to a Soil–Steel Bridge to Reduce Seismic Excitations. Geosciences 2019, 9, 448.

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