Preprints
https://doi.org/10.5194/nhess-2021-381
https://doi.org/10.5194/nhess-2021-381
 
02 Feb 2022
02 Feb 2022
Status: a revised version of this preprint is currently under review for the journal NHESS.

Modelling the sequential earthquake-tsunami response of coastal urban transport infrastructure

Azucena Román-de la Sancha1, Rodolfo Silva2, Omar S. Areu-Rangel1, Manuel Gerardo Verduzco-Zapata3, Edgar Mendoza2, Norma Patricia López-Acosta2, Alexandra Ossa2, and Silvia García2 Azucena Román-de la Sancha et al.
  • 1Graduate student, Instituto de Ingeniería, Universidad Nacional Autónoma de México, Circuito Escolar, Ciudad Universitaria, 04510, Coyoacán, Cd. Mx., México
  • 2Researcher, Instituto de Ingeniería, Universidad Nacional Autónoma de México, Circuito Escolar, Ciudad Universitaria, 04510, Coyoacán, Cd. Mx., México
  • 3Researcher, Facultad de Ciencias Marinas, Universidad de Colima, Carretera Manzanillo-Cihuatlán Km 19.5, Colonia El Naranjo. 28868 Manzanillo, Colima, México

Abstract. Transport networks in coastal, urban areas are extremely vulnerable to seismic events, with damage likely due to both ground motions and tsunami loading. Most existing models analyse the performance of structures under either earthquakes or tsunamis, as isolated events. This paper presents a numerical approach that captures the sequential earthquake-tsunami effects on transport infrastructure in a coastal area, taking into consideration the combined strains of the two events. Firstly, the dynamic cyclical loading is modelled, applied to the soil-structure system using a finite difference approximation to determine the differential settlement, lateral displacement, and liquefaction potential of the foundation. Next, using a finite volume method approach, tsunami wave propagation and flooding potential are modelled. Finally, the hydrostatic and hydrodynamic loads corresponding to the wave elevation are applied to the post-earthquake state of the structure, to obtain a second state of deformation. The sequential model is applied to an embankment in Manzanillo, Mexico, which is part of a main urban road, the response is analysed using ground motion records of the 1995 Manzanillo earthquake-tsunami event.

Azucena Román-de la Sancha et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on nhess-2021-381', Anonymous Referee #1, 21 Feb 2022
    • AC1: 'Reply on RC1', Azucena Roman de la Sancha, 09 Apr 2022
  • RC2: 'Comment on nhess-2021-381', Anonymous Referee #2, 08 Mar 2022
    • AC2: 'Reply on RC2', Azucena Roman de la Sancha, 09 Apr 2022

Azucena Román-de la Sancha et al.

Azucena Román-de la Sancha et al.

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Short summary
Transport networks in coastal urban areas are vulnerable to seismic events, with damage likely due to both ground motions and tsunami loading. The paper presents an approach that captures the earthquake-tsunami effects on transport infrastructure in a coastal area, taking into consideration the combined strains of the two events. The model is applied to a case in Manzanillo, Mexico using ground motion records of the 1995 earthquake-tsunami event.
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