Abstract
The demand for underground infrastructures such as tunnels is expanding due to rapid urbanization. Tunnels in urban areas are usuallyconstructed adjacent to structures supported by piles. Therefore, a proper understanding of pile-tunnel interaction due to tunnel excavation activities is vital. Thus, in this study, a numerical analysis is conducted to analyze pile settlements, ground surface settlements and shear deformations above an existing tunnel subject to the presence of an adjacent tunnelling, with vertical offsets, the number of piles and the pile spacing considered as variables in the analysis. The results show that the vertical offsets between the tunnel crown and the pile tip generatelarger settlement than the pile spacing. In addition, the vertical offset shows an inversely proportional relationship to the shear deformation due to new tunnelling.
| Translated title of the contribution | Effect of New Tunnelling on the Behaviour of Grouped Pile and Adjacent Tunnel |
|---|---|
| Original language | Korean |
| Pages (from-to) | 509-517 |
| Number of pages | 9 |
| Journal | 대한토목학회논문집(국문) |
| Volume | 42 |
| Issue number | 4 |
| DOIs | |
| State | Published - Aug 2022 |