2024 Volume 12 Issue 2 Article ID: 23-13124
This study explores the correlation between inter-building spacings and the relative tilting angles of two adjacent structures on liquefiable sandy ground during seismic events through a series of model shaking tests conducted in a centrifugal field. The experimental scenarios encompass two-structure cases with varying ratios (0.05, 0.4, 0.7, and 1.0) of spacing to building breadth, as well as a single-structure case. The centrifuge model tests reveal that as the ratio of spacing to building breadth increases, the relative tilting angle of two adjacent structures increases, reaching a maximum at a spacing-to-building breadth ratio of 0.7, after which the angle gradually decreases. While these findings broadly align with the overall trend observed in previous numerical simulations concerning changes in overall tilting, the spacing-to-building breadth ratio for the transition from an inward to an outward tilted state, as well as the occurrence of the maximum relative outward tilted state, differ from the conclusions of previous numerical simulations. Nevertheless, there are still commonalities with conclusions drawn from previous physical experiments, offering valuable insights into the behavior of adjacent structures during seismic liquefaction events.
