软土路基沉降广义Usher曲线预测方法研究  

Study on forecasting method of generalized Usher curve for soft clay embankment settlement

作　　者：王伟 曾婧[2] 

机构地区：[1]长沙市天心城市建设投资有限责任公司,湖南长沙410004 [2]湖南交通职业技术学院,湖南长沙410004

出　　处：《企业技术开发》2009年第4期51-53,共3页Technological Development of Enterprise

摘　　要：Gompetz、Pearl、Usher和Weibull等4种生长曲线模型是应用较多的软土路基沉降预测模型,文章建立了一种具有更大灵活性和更广泛适应性的新的生长曲线模型———广义Usher模型,通过数学规划方法求解,从而可根据有限的实测沉降观测数据预测软土路基沉降发展过程。工程实例分析表明,利用该模型得到的预测曲线与实测曲线吻合较好,精度不低于上述4种模型,能够满足工程要求。The Gompetz model, Pearl model, Usher model and Weibull model those four growth curve models are frequently used to predict the settlements of soft clay embankments. In this paper, a new growth curve model has been established, namely the generalized Usher model, which is more flexible and adaptable. Applying the mathematical programming method, the settlement development course of soft clay embankment can be forcasted by limited observed settlement data. The analytical result of engineering practice indicates that the forecasting curve obtained by this model and method can fit well with the measured curve, which can meet engineering demand.

关 键 词：软土路基 沉降 预测 广义Usher模型 

分 类 号：TU433[建筑科学—岩土工程]