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http://dx.doi.org/10.12652/Ksce.2022.42.4.0509

Effect of New Tunnelling on the Behaviour of Grouped Pile and Adjacent Tunnel  

Kim, Su Bin (Seoul National University of Science and Technology)
Oh, Dong-Wook (Dongyang University)
Cho, Hyeon Jun (Seoul National University of Science and Technology)
Lee, Yong-Joo (Seoul National University of Science and Technology)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.42, no.4, 2022 , pp. 509-517 More about this Journal
Abstract
The demand for underground infrastructures such as tunnels is expanding due to rapid urbanization. Tunnels in urban areas are usually constructed 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.
Keywords
Tunnel excavation; Grouped pile; Shear deformation; Numerical analysis; Pile spacing;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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