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针对高速公路拼接段新建路基施工后 ,以边载形式引起已建公路产生的附加沉降的不良影响进行研究 .应用土体固结非线性有限元法 ,利用原高速公路的监测沉降记录 ,对拼接地区的地基参数进行反馈分析 ,以确定能综合反映当地地基状况的参数 .方法在锡澄与沪宁高速公路拼接段上应用 ,经一年多的现场监测表明取得了良好的效果 .
In the light of the new subgrade construction in highway splicing section, the adverse effect of additional settlement caused by the side load is also studied.Using the soil consolidation nonlinear finite element method, the monitoring settlement records of the original expressway are used to analyze the splicing Area based on the feedback analysis to determine the parameters that can comprehensively reflect the conditions of the local foundation.The method was applied on the splicing section of Xicheng and Shanghai-Nanjing Expressway, and after more than one year of on-site monitoring, it achieved good results.