2025 Volume 81 Issue 13 Article ID: 24-13530
This study mainly focuses on buried sewer pipes. A model of a buried pipe with a 1,500-mm-long branch line was constructed, and the spatial correlation between ground surface and buried pipe displacement due to ground deformation during an earthquake was revealed through a combination of shaking table excitation tests and image analysis. The modeling of three types of ground deformation, liquefaction, ground cracking, and subsidence, was conducted to discover the spatial correlation between ground surface displacement and buried pipe displacement. The estimation of the ground surface displacement by image analysis provided us with good accuracy with extremely low variation for all types of ground surface deformation. The best modeling of the spatial correlation between ground surface and buried pipe displacement was done using a linear approximation.
