首页 | 本学科首页   官方微博 | 高级检索  
     检索      

软土路基沉降发展规律及其预测
引用本文:赵明华,刘煜,曹文贵.软土路基沉降发展规律及其预测[J].中南大学学报(自然科学版),2004,35(1):157-161.
作者姓名:赵明华  刘煜  曹文贵
作者单位:湖南大学,土木工程学院,湖南,长沙,410082
基金项目:高等学校博士学科点专项科研项目
摘    要:通过对软土路基沉降发展规律及其特点进行分析与研究,得出软土路基沉降发展基本经历了发生-发展-稳定-极限4个阶段,其固结沉降-时间过程曲线的特点与社会经济预测中的"S"型成长曲线极其相似.基于3种"S"型成长曲线模型,引入组合预测的思想,提出了一种预测路基沉降发展规律的变权重组合预测方法,并建立了软土路基沉降的变权重组合"S"型成长模型,通过数学规划方法求解,从而可根据有限的沉降实测数据预测路基沉降发展过程.工程实例分析结果表明,使用该模型,其预测曲线与实测数据曲线基本吻合,且分析方法灵活,可用于软土路基沉降发展预测,对防治公路路基沉降,保证公路营运质量具有一定的理论与工程意义.

关 键 词:软土路基  沉降  成长曲线  预测方法  变权重组合预测
文章编号:1672-7207(2004)01-0157-05
修稿时间:2003年10月5日

The developing regularity and forecasting of settlement in soft clay roadbed
ZHAO Ming-hua,LIU Yu,CAO Wen-gui.The developing regularity and forecasting of settlement in soft clay roadbed[J].Journal of Central South University:Science and Technology,2004,35(1):157-161.
Authors:ZHAO Ming-hua  LIU Yu  CAO Wen-gui
Abstract:This paper studies the characteristics of soft clay roadbed settlement and shows the settlement experiences occurrence-growth-stabilization-terminal four stages and the figure of consolidation settlement-time curve is similar with the "S" type growth curve used in economic prediction. Based on the "S" type growth curve models, a variable-weight combination forecasting method was put forward with the idea of combination prediction, and a variable-weight combination "S" type growing model was established, which can forecast the future settlement in soft clay roadbed using limited measured settlement data. The analysis results of engineering practice indicate that the effect of the prediction by using this model is superior to other single models and the method is so flexible that it offers an effective and applied way in forecasting the settlement in soft clay roadbed, which shows that this method has great theoretic significance and practical value in preventing roadbed sink and guaranteeing the road behavior in service.
Keywords:soft clay roadbed  settlement  "S" type growth curve  forecasting method  variable-weight combination forecasting
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号