Numerical Simulation Study on Settlement of a Newly Built High-speed Railway Yard on a Marine Soft Soil Foundation

Abstract

The settlement caused by engineering construction is the most important research topic in geotechnical engineering, and monitoring and numerical simulation are commonly used to study this type of settlement. This article takes the construction of a high-speed railway station yard on a soft soil foundation as the research object, and analyzes the modeling based on the construction steps of the project and external influencing factors. The conclusion indicates that soft soil has a low modulus, is prone to deformation, and exhibits hysteresis; Excavation of foundation pits and loading and unloading of construction around soft soil areas can cause further settlement of soft soil foundations; The settlement caused by the construction of two deep foundation pits near the parking lot is significant, accounting for 33% and 30% of the total additional settlement, respectively. The impact of dredging and unloading of two river channels on settlement accounts for 12% and 15%, respectively; The measured settlement after surface engineering is in good agreement with the numerical simulation results.