Regional subsidence effects in tunnel-soil-structure seismic interaction
Regional subsidence effects in tunnel-soil-structure seismic interaction
Recent numerical studies have shown the importance of the interaction between underground and surface structures. Although the results have been revealing, it has not been considered that this interaction can change over time in areas susceptible to regional subsidence. In this paper, the performance of systems comprised by on-ground and underground structures subjected to seismic loads and regional subsidence is evaluated in the soft clays of Mexico City. The analyses are made by three-dimensional finite difference models, coupling the hardening-soil model to simulate consolidation due to the presence of structures and regional subsidence, with a hysteretic model to consider the degradation of stiffness and increase in damping during the seismic load. To simulate subsidence, the sinking and piezometric depletion rates of the studied area are considered. The analyses conducted involve the evaluation of the seismic performance of the system of structures at different times during its economic life, considering the simulation of the consolidation process.
Juan Manuel Mayoral Villa; Mauricio Diaz; Mauricio Alcaraz
10th European Conference on Numerical Methods in Geotechnical Engineering (NUMGE2023)
4. Geotechnical earthquake engineering
https://doi.org/10.53243/NUMGE2023-361
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