软土地基路堤预抛高确定方法  

Method for calculation of presetting flip-height of highway embankment on soft foundation

作　　者：李国维[1] 盛维高[1] 蒋华忠[1] 钱尼贵[2] 

机构地区：[1]河海大学岩土工程科学研究所,江苏南京210098 [2]广东省交通科学研究所,广东广州510420

出　　处：《河海大学学报（自然科学版）》2008年第1期76-81,共6页Journal of Hohai University(Natural Sciences)

基　　金：广东省交通科技项目(粤交科函(2000)108号)

摘　　要：根据施工期路堤填土厚度、沉降实测数据建立了一种新的工后沉降预测模型,并从土力学角度分析了该预测模型的物理意义;针对不同的软土地基深度、路堤高度和工后沉平控制时间,导出了路堤预抛高计算公式.结合工程实例,将计算的工后沉降、预抛高量与工后实测沉降进行了比较分析,验证了该计算方法的可行性.Based on measured data of fill thickness of embankment and settlement during the construction period, a new model for prediction of post-construction settlement was set up, and the physical meaning of the model was analyzed from the angle of soil mechanics. Then formulas for calculation of the presetting flip-height were worked out for different thicknesses of soft foundation, different heights of embankment, and different control time of post-construction settlement. The feasibility of the calculation method was verified by comparison of the calculation result of post-construction settlement and presetting flip-height with the measured data of a practical project.

关 键 词：路堤 填土厚度 工后沉降 预抛高 

分 类 号：TU471.8[建筑科学—结构工程]