高速铁路路基沉降的几种原因及其监测方法

Several Reasons for Subgrade Settlement of High-speed Railway and Monitoring Methods

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。

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.