受限空间部分叠压式多级挡墙稳定性分析与应用OA

This paper took a mountainous highway reconstruction project as a case study to investigate the application performance of partially overlapping multi-tier gravity retaining walls under spatially constrained conditions,where conventional design requirements,such as a platform with sufficient width for structural separation and independent load-bearing between upper and lower walls,could not be met.Using the GEO5 2025 geotechnical design software,systematic structural stability verification was conducted to analyze load transfer mechanisms between upper and lower retaining walls under major design conditions.Additionally,the GeoStudio finite element analysis software was employed to simulate contour maps of horizontal stress and plastic zone distribution in a three-tier wall system,as well as to evaluate the overall safety and stability of the slope after support.Results show that:the anti-sliding safety factor of the retaining walls ranges from 8.87 to 15.84,the anti-overturning safety factor ranges from 1.65 to 2.10,and the overall slope stability factor reaches 1.37,all meeting code requirements.The study confirms that partially overlapping multi-tier retaining walls exhibit excellent cooperative load-bearing performance even under platform-constrained conditions,making them a safe,economical,and effective solution for slope support.