Abstract
As the earthquake events are unpredictable, the accurate estimation of settlement and excess pore pressure is challenging for the soil foundation system against earthquake loading. Therefore, it is essential to study the effect of an earthquake before the construction of any structure on a particular site. In the present paper, response of a shallow foundation resting on liquefiable soil is numerically modeled to evaluate its response under cyclic loading. Two different conditions have been numerically simulated and the effect of spacing in between two foundations has been studied along with light and heavy foundation. The porous media theory based on coupled approach has been considered for analyzing the system. A computer code for finite element analysis has been developed in FORTRAN 90. The inelastic behavior which includes dilitancy and hardening behavior of the soil is modeled using Pastor–Zienkiewicz Mark III model. The settlement and effective pore pressure obtained are validated with centrifuge test results. It is observed that settlements during the cyclic loading time remained almost the same, regardless of the foundations spacing. The post-shaking settlements, however, were different for different spacing. Foundations settled often less when located close to each other.
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Kumari, S., Kumar, A., Suman, S.K. (2018). Numerical Evaluation of Cyclic Response of Shallow Foundation Resting on Liquefiable Soil. In: Qiu, T., Tiwari, B., Zhang, Z. (eds) Proceedings of GeoShanghai 2018 International Conference: Advances in Soil Dynamics and Foundation Engineering. GSIC 2018. Springer, Singapore. https://doi.org/10.1007/978-981-13-0131-5_21
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DOI: https://doi.org/10.1007/978-981-13-0131-5_21
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