Numerical Modelling of Structures Adjacent to Retaining Walls Subjected to Earthquake Loading
Madabhushi, Gopal S. P.
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Guan, X., & Madabhushi, G. S. P. (2020). Numerical Modelling of Structures Adjacent to Retaining Walls Subjected to Earthquake Loading. Geosciences, 10 (12)https://doi.org/10.3390/geosciences10120486
In an urban environment, it is often necessary to locate structures close to existing retaining walls due to congestion in space. When such structures are in seismically active zones, the dynamic loading attracted by the retaining wall can increase. In a novel approach taken in this paper, finite element-based numerical analyses are presented for the case of a flexible, cantilever sheet pile wall with and without a structure on the backfill side. This enables a direct comparison of the influence exerted by the structure on the dynamic behaviour of the retaining wall. In this paper, the initial static bending moments and horizontal stresses prior to application of any earthquake loading are compared to Coulomb’s theory. The dynamic behaviour of the retaining wall is compared in terms of wall-top accelerations and bending moments for different earthquake loadings. The dynamic structural rotation induced by the differential settlements of the foundations is presented. The accelerations generated in the soil body are considered in three zones, i.e., the free field, the active and the passive zones. The differences caused by the presence of the structure are highlighted. Finally, the distribution of horizontal soil pressures generated by the earthquake loading behind the wall, and in front of the wall is compared to the traditional Mononobe-Okabe type analytical solutions.
earthquake, finite element modelling, retaining walls, structures
External DOI: https://doi.org/10.3390/geosciences10120486
This record's URL: https://www.repository.cam.ac.uk/handle/1810/314806