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Dynamic Analysis of the Longest Viaduct in Algeria Under Spatial Variable Ground Motion According to RPOA and Eurocode 8 Seismic Codes

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Abstract

Background

The dynamic response of large-scale structures requires a good representation of seismic excitations. These structures are subjected to spatial variability of seismic ground motion. This seismic variability results from the propagation of seismic waves between the focus and the site. The RPOA (the Algerian Bridge Seismic Regulation Code) and Eurocode 8 (EC8) introduce simplified approaches for spatial variable ground motion.

Purpose

The main objective of this paper is the evaluation of the accuracy of the methods proposed by the RPOA through comparison with the EC8 provisions.

Method

The longest railway viaduct in Algeria is used as a case study in this work. The dynamic analysis based on the modal spectral dynamic method is adopted according to RPOA and Eurocode 8 seismic codes.

Results and conclusion

The results show that the method proposed by RPOA to consider the spatial variability of ground motion clearly overestimates the seismic demand. Therefore, the RPOA method gives internal forces much higher than those calculated from Eurocode 8.

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Acknowledgements

We would like to thank Mr. Djenelbaroud and Mr Khaddam for their contribution to this work. May they find here our consideration and recognition.

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Authors and Affiliations

  1. RISk Assessment & Management Laboratory (RISAM), University of Tlemcen, Po Box 230, Tlemcen, Algeria

    Rachid Derbal & Nassima Benmansour

  2. Department of Civil Engineering and Public Works, University of Ain Temouchent, Po. Box 284, Ain Temouchent, Algeria

    Rachid Derbal & Ahlem Houaria Mohammed Belhadj

  3. Smart Structures Laboratory (SSL), University of Ain Temouchent, Po. Box 284, Ain Temouchent, Algeria

    Ahlem Houaria Mohammed Belhadj

Authors
  1. Rachid Derbal
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  2. Nassima Benmansour
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Correspondence to Rachid Derbal.

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Derbal, R., Benmansour, N. & Mohammed Belhadj, A.H. Dynamic Analysis of the Longest Viaduct in Algeria Under Spatial Variable Ground Motion According to RPOA and Eurocode 8 Seismic Codes. J. Vib. Eng. Technol. 12, 5787–5800 (2024). https://doi.org/10.1007/s42417-023-01218-7

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  • DOI: https://doi.org/10.1007/s42417-023-01218-7

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