论文部分内容阅读
利用软土路基实测的沉降数据,通过对S-lgt坐标系内次固结段进行研究,提出了采用非线性对数曲线模型对流变软土路基的最终沉降量进行预测,并通过位移反分析结合数学优化方法得到模型参数。该模型能避免Asaoka法要采用高阶微分方程才能考虑次固结沉降造成预测结果偏小、三点法存在试算结果取值困难的缺点,并且能给出最终沉降和不同时刻的工后沉降量。通过工程实例试算表明其预测具有较高的精度,在流变软土路基的次固结沉降研究和工程实际应用方面有一定参考价值。
Based on the subsidence data measured by the soft soil subgrade, the final subsidence of the soft soil subgrade is predicted by the non-linear logarithmic curve model through the study of the secondary consolidation section in the S-lgt coordinate system. By using the inverse displacement analysis Combined with mathematical optimization method to get the model parameters. The model can avoid Asaoka method to use higher order differential equation to consider sub-consolidation settlement caused by the prediction result is small, the three-point method has the difficulty of trial calculation results disadvantage, and can give the final settlement and different post-construction settlement . The trial calculation of the engineering example shows that the prediction has high precision. It is of certain reference value in the study of secondary consolidation and settlement of the soft soil roadbed and the practical engineering application.