Akademik Veri Yönetim Sistemi
2nd National Civil Engineering Symposium, Girne, Kıbrıs (Kktc), 14 - 15 Eylül 2022, ss.30, (Özet Bildiri)
Soil settlement due to underground tunnelling requires appropriate considerations to estimate the ground deformation behaviour. The surface and subsurface settlements are highly influenced by construction sequence and tunnelling methods which require empirical, analytical or finite element method approaches. This research presents the effect of single bored tunnel construction in loose sand, dense sand, soft clay and stiff clay with varying tunnelling depths, diameter and volume loss. The investigation was carried out in 2D Plaxis FEM software and the maximum surface settlement in different soil types was analysed. A set of maximum surface settlement equations were developed and the multivariable equation was validated and calibrated using the field data. In addition, the location of inflection point in the settlement curve was also investigated based on the tunnel and soil profile variables. A detailed comparative study was carried out between the developed equations and the equations available in the literature for inflection points and the differences with respect to the field data are also highlighted. The developed multivariable maximum surface settlement equation tends to be overall successful in comparison to field data obtained through several underground tunnelling projects.