Dynamic response of a composite bridge to mining tremors from main mining regions in Poland / I.J. Drygała, J.M. Dulinska // W: Bridge maintenance, safety, management, life-cycle sustainability and innovations ... więcej

Dynamic response of a composite bridge to mining tremors from main mining regions in Poland / I.J. Drygała, J.M. Dulinska // W: Bridge maintenance, safety, management, life-cycle sustainability and innovations [Dokument elektroniczny] / eds. Hiroshi Yokota, Dan M. Frangopol. – London : CRC Press / Balkema : Taylor & Francis Group, 2021. – Pamięć USB. – S. 3190-3197 : fot., rys., tab., wykr. – Oznaczenie ref./art.: ch454.pdf. – Bibliogr. s. 3196-3197, Abstr. – Streszcz. ref. w drukowanej książce z mat. konf., s. 678. – DOI: 10.1201/9780429279119 (całość). – Konf. odbyła się online w zmienionym terminie: 11-18.04.2021. – Mat. konf.: Tenth International Conference on Bridge Maintenance, Safety and Management (IABMAS 2020), Sapporo, Japan, 11-18.04.2021. – doi: 10.1201/9780429279119-433. – ISBN 978-0-367-23278-8

In the paper a detailed analysis of the dynamic response of a composite bridge to miningtremors typical for two main regions of mining activity in Poland (i.e. the Upper Silesian Coal Basin and theLegnica-Glogow ... więcej

In the paper a detailed analysis of the dynamic response of a composite bridge to miningtremors typical for two main regions of mining activity in Poland (i.e. the Upper Silesian Coal Basin and theLegnica-Glogow Copper District) is presented. The representative time histories of accelerations registered inboth regions were used as ground motion data in the calculation of the dynamic response of the structure. Thefrequency contents of both selected tremors were significantly different: the dominant frequency range of themining tremor in the Upper Silesian Coal Basin consists of lower frequencies (1.5-3.5 Hz) than in the Leg-nica-Glogow Copper District (5-7.5 Hz). The ABAQUS software was used for the dynamic calculation. Firstly,natural frequencies of the structure were evaluated on both, experimental and numerical ways. The similarityof results allowed to validate the numerical model of the bridge. Then, for the assessment of the influence ofdominant frequencies of the mining tremor on the dynamic response of the structure, full time history analyseswere carried out. The comparison of the maximal stresses obtained for both shocks was presented. It provedthat the dynamic response of the composite bridge strongly depended not only on the level of vibration ampli-tudes but on the dominant frequency range of the mining shock from the various mining region as well.