高路堤施工预留沉降量的确定

Study on Estimation Method of Preformed Settlement of High Embankment

路堤施工完毕后,在一定时期内必然会发生沉降,这对投产后的运营和维修影响很大。因此就必须在施工时预留沉降量。随着铁路事业的发展,列车运行速度越来越快,对线路和路基的要求也越来越高,因此就要求路堤的预留沉降量相当准确。随着路堤高度的增加,需要预留的沉降量也相应加大,但目前尚没有一种准确确定路基预留沉降量的标准。本文介绍一种在施工过程中通过实际观测和理论分析比较准确地确定高路堤预留沉降量的方法。

The post - construction settlement of the embankment will bring some problems to maintenance and operation, so the settlement reservation should be considered during the construction. With the technical development of the railway, the high stability of line and subgrade are required to support high running speed, hence accurately controUing and estimating the preformed settlement of the embankment are very important. There are no standard to estimate preformed settlement till now. This paper introduces a method to estimate the preformed settlement of high embankment accurately by observation and theoretical analysis.