Integrated numerical model for fault rupture propagation through uniform soil

This study develops a novel numerical model using Abaqus 2D to examine fault rupture propagation through uniform soil. The model simulates a soil layer overlying elastic bedrock, initiating the fault rupture within the bedrock, ensuring a more realistic representation of rupture propagation. Validated against centrifuge tests and previous numerical studies, the model accurately predicts key engineering parameters such as surface deformation and fault outcrop location. The study highlights significant surface deformation and double shear band formation during normal faulting. Additionally, a parametric study examines the impact of earthquake magnitude and dip-angle on fault outcrop, plastic strain zones, and set-back distances. The proposed model offers greater flexibility in incorporating variations in seismic sources, providing valuable insights into rupture propagation through uniform soil, with implications for seismic hazard assessment and infrastructure resilience.