Numerical Optimization of Mini Centrifuge Modelling Test Design of Excavation Unloading Influence on Existing Tunnel Controlled by Partition Piles

Partition piles are widely used in tunnel displacement control under excavation. However, the effect of partition has not been systematically studied, and centrifuge model test is lacking. In view this situation, design deformation adjacent existing caused by excavation terms dry sand foundation was carried out, a series optimization designs were out experimental process according to numerical simulation results. addition, calculated results discussed analyzed. The conclusions obtained as follows: magnesium-aluminum alloy materials structural members, its elastic modulus close that common reinforced concrete; high precision digital image correlation technology (DIC) measure horizontal vertical tunnel. show embedded can play better role controlling than non-partition non-embedded piles.