基于Weibull模型的软土路基沉降预测方法  

Settlement prediction of soft ground based on Weibull model

作　　者：张涛[1] 蔡国军[1] 刘松玉[1] 

机构地区：[1]东南大学岩土工程研究所,江苏南京210096

出　　处：《岩土工程学报》2013年第S2期212-216,共5页Chinese Journal of Geotechnical Engineering

基　　金：国家自然科学基金项目(41202203);"十二五"科技支撑计划项目(2012BAJ01B02);江苏省自然科学基金重点项目(BK2010060);中央高校基本科研业务费项目(3221003202)

摘　　要：根据软土路基沉降特点及常用沉降预测方法的局限性,提出采用Weibull模型预测路基沉降的新方法。通过对Weibull模型表达式的解析,明确了模型中各参数的物理意义,进行了各参数对路基沉降的敏感性分析,表明了提出模型的良好适应性。针对已有预测模型求解方法的复杂性,给出了模型简易求解方法,最后结合具体工程验证了该方法的可靠性。According to the characteristics of settlement on soft foundation and the limitations of commonly-used prediction methods, Weibull model is proposed to predict the roadbed settlement. The engineering significance of each parameter in this model is explicit by analyzing Weibull model. The influence of crucial parameters on the roadbed settlement is studied, and it shows the model has a good adaptability. For the commonly methods to solve the model are complexity, a simple method is proposed. The reliability of the proposed model and the practicability the relevant method are proved through case studies.

关 键 词：软土路基 沉降预测 Weibull模型 

分 类 号：U416.16[交通运输工程—道路与铁道工程]