论文部分内容阅读
通过大量观测数据分析,研究了高速公路软土地基沉降曲线发展规律,沉降历时曲线一般经过发生、发展、稳定后达一定极限,其表现形式符合成长曲线的基本形式。建立软土路基全过程沉降预测的Logistic模型,确定了模型中各参数含义,分析了各参数对地基沉降不同阶段的影响、应用范围及其在实践中的指导意义。给出模型的求解方式,讨论了模型预测效果,工程实例预测结果表明所建立模型具有科学性和适用性。
Through a large number of observation data analysis, the development law of settlement curve of expressway soft ground is studied. The settlement duration curve usually takes place, develops and reaches a certain limit after being stabilized. Its performance form accords with the basic form of growth curve. The Logistic model of settlement prediction in the whole process of soft soil subgrade was established. The meanings of the parameters in the model were determined. The influence of various parameters on the different stages of subsidence, the application scope and the guiding significance in practice were analyzed. The solution of the model is given, and the effect of model prediction is discussed. The prediction of engineering example shows that the model is scientific and applicable.