【摘要】 <正>0引言要确保高速铁路列车高速、安全、舒适、平稳运行以及最大程度地减少维修工作量,就要求轨道必须具有高平顺性。轨道是靠线下工程为支撑基础的,在线下工程中,桥和隧道本身的刚度决定了它们的沉降变形比较容易控制,而路基的刚度小,沉降变形控制的难度大。因此在实际工程中,对某些难以控制的路段会采取加强地基处理措施更多还原

【Abstract】 According to the construction practice,several improper technologies which might cause post-construction settlement of high-speed railway subgrade are put forward.Aimed at the situation of subgrade settlement monitoring and existent problems,many reasonable proposals are presented, which are very valuable for settlement monitoring.更多还原