CENTRIFUGE MODELLING OF TUNNELLING NEAR DRIVEN PILES

摘要

A centrifuge model study was carried out to investigate the effects of tunnelling on nearby single piles in dense dry sand. This paper presents a description of the centrifuge model and the test procedures followed. The surface settlement profiles recorded during tunnelling-induced volume loss are discussed, as well as the settlement of piles installed at various distances from the tunnel. A zone was identified around the tunnel in which a potential for large settlement exists. Changes in the load distribution on individual piles at various locations during increasing volume loss are presented.