资料简介： Settlement prediction of embankment s with stage construction on soft ground
LIU Song-yu（Institute of Geotechnical Engineering, Southeast University,Nanjing 210096,China）
JING Fei（Institute of Geotechnical Engineering, Southeast University,Nanjing 210096,China）
Abstract: The magnitude and rate of the settlement are the key elements subjected to design analysis of embankments on soft ground. The observational methods based on field measurement have indicated the promising results and become effective methods to predict the final settlement, while the uncertainties of parameters and theories limit significantly the accuracy of settlement estimation. This paper presents an observational method to predict the settlement performance of embankments with stage construction on soft ground based on Asaoka method. The case studies show the accordance of the predicting results with the field measured data. It is also given from the case study that the value of Eu / Cu ratio ranges from 50 to 100 for Jiangsu Marine clay and its actual coefficient of consolidation is almost one order of magnitude larger than the laboratory data.
Key words: settlement, embankment, observational method, stage construction, Jiangsu Marine clay
软土地基上分期施工的路堤沉降预测方法
LIU Song-yu和 JING Fei
LIU Song-yu：中国南京东南大学岩土工程协会
JING Fei ：中国南京东南大学岩土工程协会
摘要：沉降量和沉降速率控制是软土地基上路堤分析设计的关键问题，由于固结理论的局限性和参数较大的不确定性，理论预测的精度较低，而基于现场实测数据的观测法显示出了较高的精度。本文在Asaoka观测法的基础上,形成了一种软土路基上分期施工时路堤沉降预测的方法，此案例研究表明了与现场测量数据预测结果的一致性。案例研究还得出，江苏海洋粘土的50%到100%的Eu/Cu系数比值和它的固结真实系数几乎比实验数据大一个级别。
关键词：沉降, 路堤, 观测法, 分期施工, 江苏海相软土
| 
