Abstract
The continuous increase in population has led to the development of underground structures like tunnels to be of great importance due to several reasons. One of these reasons is that tunnels do not affect the living activities on the surface, nor they interfere with the existing traffic network. More importantly, they have a less environmental impact than conventional highways and railways. This paper focuses on using numerical analysis of circular tunnels in terms of their behavior during construction and the deformations that may occur due to overburden and seismic loads imposed on them. In this study, the input data are taken from an existing Cairo metro case study; results were found for the lateral and vertical displacements, the Peak Ground Acceleration (PGA), Arias Intensity (IA), and the Fourier amplitude spectrum. It was found that the vertical displacement was 26.2 mm under overburden pressure and reached 28 mm under seismic loading. These results were discussed and compared to other information and given a logical explanation based on the findings.
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Al-Mirza, H.A., Karkush, M.O. (2022). Numerical Modeling of Circular Tunnel Alignment Under Seismic Loading. In: Karkush, M.O., Choudhury, D. (eds) Geotechnical Engineering and Sustainable Construction. Springer, Singapore. https://doi.org/10.1007/978-981-16-6277-5_2
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DOI: https://doi.org/10.1007/978-981-16-6277-5_2
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