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基于包边土填砂路基作用机理的复杂性及理论研究落后于工程实践的现状,对填砂路基变形特征进行分析研究,运用有限元数值模拟的方法,就影响变形的各设计参数进行敏感性分析,并提出基于变形控制的技术措施。计算结果表明,边坡坡率和包边土厚度对填砂路基变形影响很小;而路堤高度、模量和地基状况却对其影响显著;可采用提高路基压实度,加强软基处理等措施控制路基变形。工程应用表明,轻型井点降水能有效减小路基的工后变形,具有显著的推广应用价值。
Based on the complexity and theoretical study of the mechanism of the action of the packed ground under the clayey soil, the deformation characteristics of the filled sand-filled subgrade are analyzed and studied. The finite element method Analyzes and puts forward technical measures based on deformation control. The calculation results show that the influence of the slope slope and the thickness of the edge soil on the deformation of the sand-filled roadbed is very small, while the height, modulus and ground conditions of the embankment have a significant impact on them. The compaction degree of the roadbed can be improved, Measures to control subgrade deformation. Engineering application shows that light well dewatering can effectively reduce the post-construction deformation of subgrade, which has a significant application value.