对于软土地区修建的工程 ,软基的最终沉降量对施工有指导意义。由于土体性质和状态的复杂性 ,以及勘测、施工中的一些不确定因素的影响 ,计算结果与实际观测值有差异。反演分析法可在一定程度上减轻这些问题 ,因此在现场实测的软土地基沉降观测资料的基础上 ,利用太沙基的土体理论建立了计算最终沉降量的反演计算模型 ,该模型既适用于一次加载 ,也适用于分级加载。根据广梧高速公路某断面实测的沉降资料反演计算有关参数 ,并将理论计算模型与实测结果进行比较 ,二者符合较好 ,证明该理论模型是合理的

Inverse Analysis of Total Settlement of Soft Soil Foundation FENG Zhong-ren 1,HUANG Wei 1,CHEN Ze-song 2,ZHAO Ming 2,XIONG Shu-fang 3 (1.School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430070,China; 2.Guangdong Road & Bridge Construction Development Co Ltd,Guangdong 510635,China; 3.Wuhan Jiang′an Municipal Construction Parent Company,Wuhan 430015,China)For construction built in soft soil region, the total settlement of soft soil is useful for construction. Because of the complexity of the characteristic of soil and some indetermination factor in survey and construction, calculating value is different from the prognosticate value. Method of back analysis can alleviate these problems to a certain degree. Therefore based on the on-the-spot data from the settlement on the soft soil, a back analysis method of total settlement is built, which fits either the single loading or the successive loading. According to the on-the-spot data coming from a settlement of a cross section of Guangwu freeway, we compute relevant parameters with the method. The theoretical models of the settlement are determined using the parameters and it shows consistency with the measured data and it proves that the model is reasonable.soft soil foundation; inverse analysis; entire settlement; analysis method of settlement