采用砂桩对病害软弱土基床进行了加固,选取典型的测试断面进行了基床路基面(含砂桩顶和枕底)长期沉降观测。观测表明砂桩能提高基床的承载力,改善基床的动力特性,减小基床的下沉量和沉降的发展速率,是一种有效的基床补强措施。 Sand pile is used to reinforce the soft soil basement bed. Long-term settlement observation of the basement bed (including sand pile top and pillow bottom) is carried out by taking typical test sections. The observation shows that the sand pile can improve the bearing capacity of the bed, improve the dynamic characteristics of the bed, reduce the subsidence and the rate of subsidence, which is an effective bed reinforcement measure.