NDLI: Numerical analysis of the excavation of a shallow tunnel in Neapolitan pyroclastic soil

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Numerical analysis of the excavation of a shallow tunnel in Neapolitan pyroclastic soil

Content Provider	Scilit
Author	Flora, Alessandro Nicotera, Marco Valerio
Copyright Year	2019
Description	In the last years, the availability of sound constitutive models and numerical codes has strongly improved confidence in geotechnical design, as they allow the engineers to take into account in their analyses complex geometries and construction patterns. However, the contribution of the new powerful tools is even more important if they are used at a research stage to take an insight into the relative influence that the adopted geometry and mechanical parameters have on the case to be studied. Such a task, which is the final goal of every parametric study, can help to sort out the essential features of the engineering problems, therefore helping the designer even if simpler approaches have to be adopted. In this paper, the case of an ideal shallow tunnel excavated in neapolitan pozzolana is considered. Different combinations of mechanical characteristics, depths and unlined lengths behind the front are assumed, and a 2D analysis is carried out by means of Plaxis 7.0. The plain strain analysis behind the tunnel front is made possible by the adoption of a simple 2D model of the threedimensional interaction problem. Considerations on the influence of tunnelling procedures on ground movements and inflections both along the tunnel axis and in the transverse plane are then drawn on the bases of the obtained simulation results. Book Name: Beyond 2000 in Computational Geotechnics
Related Links	https://content.taylorfrancis.com/books/download?dac=C2004-0-32584-4&isbn=9781315138206&doi=10.1201/9781315138206-13&format=pdf
Ending Page	142
Page Count	10
Starting Page	133
DOI	10.1201/9781315138206-13
Language	English
Publisher	Informa UK Limited
Publisher Date	2019-01-22
Access Restriction	Open
Subject Keyword	Book Name: Beyond 2000 in Computational Geotechnics Geological Engineering Models Excavation Tunnel Numerical Geometries Neapolitan
Content Type	Text
Resource Type	Chapter

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