Mutual Effect between Constructing Close-in New Buildings and Tunnels
Mutual Effect between Constructing Close-in New Buildings and Tunnels
This study emphasizes the importance of accurately calculating surface and ground settlements during tunneling to assess potential impacts on nearby structures. A three-dimensional finite element model using 'MIDAS GTS/NX' was developed to simulate the tunneling process and adjacent building construction, incorporating the shield tunneling sequence. The model was applied to the Cairo Metro Line 2 tunnel (9.45 meters in diameter) from Cairo Stadium to Kolleyet ElBanat. A parametric analysis explored factors like building location, distance from the tunnel, and height, alongside settlement limits set by the Egyptian National Authority for Tunnels (NAT) and Euro Code. Results show that tunnels deeper than 15 meters have minimal impact on nearby structures, and shallow building foundations directly above tunnels cause negligible deformation or stress, except when proximity and building height significantly increase surface settlements. This research offers guidelines on building height and safety distances near underground tunnels.
Ahmed A. Elhadidi; Mostafa M. ElSayed; Adel Y. Akl
4th Asia-Pacific Conference on Physical Modelling in Geotechnics (ACPMG2024)
Other
https://doi.org/10.53243/ACPMG2024-83
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