路基工程Issue(3)：232-238,7.DOI:10.13379/j.issn.1003-8825.202412023
考虑软土特性与潮汐作用的地铁隧道变形特征
Deformation Characteristics of the Metro Tunnel Considering Soft Soil Properties and Tidal Effects
摘要
Abstract
Based on Hangzhou Metro Line,the principal component analysis method was employed to analyze the physical and mechanical properties of soft soil,obtaining comprehensive evaluation indicators reflecting the soil's soft characteristics.The engineering properties of the soft soil layers were classified to identify the layer with the poorest properties,thereby determining the key areas for subsidence and deformation prevention.ABAQUS numerical simulation was used to analyze the deformation patterns of typical cross-sections.The results show that:the second soft soil layer,composed of silty clay,has the worst engineering properties and requires focused prevention of subsidence deformation.Under the combined influence of soft soil characteristics and tidal effects,the vertical deformation of the river-crossing tunnel is consistently greater than the horizontal deformation,making it the primary control direction for engineering prevention.When the river-crossing tunnel is buried at a depth not exceeding 20 m and passes through the second soft soil layer of silty clay,the additional load from the Qiantang River tides poses a risk of the tunnel's vertical convergence exceeding the warning threshold.Therefore,the soft soil in this area should be reinforced before tunnel excavation is carried out.关键词
深厚软土/物理力学指标/主成分分析/潮差/变形控制Key words
deep soft soil/physical and mechanical index/principal component analysis/tidal range/deformation control分类
天文与地球科学引用本文复制引用
罗垂章,何同继,李臣奇,朱旭泽,蹇黎明..考虑软土特性与潮汐作用的地铁隧道变形特征[J].路基工程,2026,(3):232-238,7.基金项目
国家自然科学基金面上项目:环青藏高原深挖碎石土边坡大截面悬臂桩土拱失效机理研究(42477199) （42477199）
