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首先简述了路堤沉降动态控制技术的内容和意义,工后沉降的合理预测是路堤沉降动态控制技术的关键。基于实测沉降数据,以沉降计算值和实测值的绝对误差建立目标函数,以地基中各土层的室内试验参数为基准,在一定合理的上下范围内给出各种土工参数和修正系数的上下限区域,进而搜索出最适合当前沉降发展的参数,同时考虑了次固结因素的影响,从而建立了一种基于实测数据的工后沉降预测模型。并在Microsoft Visual Studio 2008C#环境下开发了SP1.0(Settlement Predictor v1.0)工后沉降预测程序,经申嘉湖杭高速公路大量实测沉降资料的验证,该程序能较合理地对工后沉降进行预测。
Firstly, the content and significance of the dynamic control technology of embankment settlement are briefly described. The reasonable prediction of post-construction settlement is the key to the dynamic control technology of embankment settlement. Based on the measured settlement data, an objective function is established based on the absolute error between the calculated settlement value and the measured value. Based on the indoor experimental parameters of each soil layer in the foundation, various geotechnical parameters and correction coefficients are given within a reasonable upper and lower range Lower limit area, and then find out the most suitable parameters for the current settlement development, taking into account the secondary consolidation factors, thus establishing a post-construction settlement prediction model based on measured data. And the Settlement Predictor v1.0 post-construction settlement forecasting program was developed under the Microsoft Visual Studio 2008C # environment. After verified by lots of measured subsidence data of Shen-Jia-Hu-Hang Freeway, this program can make reasonable settlement of post-construction settlement prediction.