渝湛高速公路击实膨胀土膨胀特性研究

以渝湛高速膨胀土为例，对击实膨胀土工程膨胀特性进行了试验研究，根据膨胀量试验的试验数据，拟台出膨胀量曲线的变化规律为指数关系；研究了有荷载情况下膨胀速度曲线的特征，利用非线性最小平方拟合法对膨胀曲线进行拟合，提出膨胀曲线的回归方程及其各参数的物理意义。

Research on swelling property of compacted swelling soil in Yu-Zhan expressway

Taking swelling soil in Yu-Zhan expressway as an example,this paper tests and researches the swelling property of compacted swelling soil project.According to the testing datum,this paper fits that the changing rule of swelling quantity curve is index relations,studies the characters of swelling velocity curve under the circumstance of having load,fits swelling curve by using non-linear minimum square fitting method,and proposes the regression equation of swelling curve and the physical meaning of its each parameter.