Analysis of the Influence of Deep Foundation Excavation on Adjacent Viaduct Pile Foundation Considering Train Dynamic Loads

The development and utilization of underground space is an effective way to make intensive use resources, solve "big city disease" achieve high-quality development. expansion renovation in a central urban area likely cause serious damage surrounding structures. In this study, deep foundation excavation for the reconstruction subway station Greater Bay Area was chosen analysis using finite element method. Different from common engineering, interaction between three coupling factors train dynamic load, excavation, viaduct pile were analyzed. Six different cases calculated considering working conditions depth load. Soil evaluated modified Cam-Clay model. physical parameters soil determined through on-site laboratory tests. results compared with monitoring data, accuracy model verified. settlement influence range soil, displacement internal forces piles maximum occurred direction short side pit. value approximately 0.53 times depth. increased by 49% when applying load had aggravating on horizontal top pile, increase 51%. Moreover, negative bending moment piles. This study provides reference design construction geotechnical engineering projects.