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为了较好的预测工后沉降,从软土的结构性入手,考虑天然软土的结构性损伤,减少由于软土的扰动、损伤对计算结果精确性的影响,对受扰动软土的弹性力学特征值进行了修正;结合反分析方法,由沉降固结计算的角度对模型参数进行反分析,预测了沉降趋势,并与实际观测数据及理论计算数值进行比较,对工后沉降做出合理地预测。结果表明,软土路基沉降预测不应该忽视软土的结构性损伤,通过对土参数的反演修正,计算出的软土路基沉降预测值和实测值更加接近,应用反分析理论可根据工程现场实测的变形及其他可观测信息进行一系列反馈处理,能将设计与施工过程密切联系起来,是动态设计的最基本也是最重要的组成部分。
In order to predict the post-construction settlement better, considering the structural damage of soft soil, considering the structural damage of natural soft soil, reducing the influence of soft soil disturbance and damage on the accuracy of calculation results, the elastic mechanics of disturbed soft soil The eigenvalues are corrected. By combining the back analysis method, the model parameters are inversely analyzed from the perspective of settlement and consolidation calculation, and the trend of settlement is predicted. Compared with the actual observation data and the theoretical calculation values, prediction. The results show that the prediction of soft soil subgrade settlement should not neglect the structural damage of soft soil. By the inversion and correction of soil parameters, the predicted value of soft soil subgrade settlement is closer to the measured value. The application of back analysis theory can be based on the project site The measured deformation and other observable information are processed in a series of feedback processes that closely relate the design to the construction process and are the most basic and important component of dynamic design.