沉降和位移观测在软土路基施工中的应用

Application of Settlement and Displacement Observing in Construction of Soft Soil Subgrade

软土路基的施工控制是高等级公路项目建设的重要环节。传统上一般只重视施工方法的选择,而忽视了过程监测与控制。以丹东至大连高速公路东港段水田区软土路基施工为例,提出并介绍了软土地区路基填筑过程中,沉降和位移观测的应用及实际操作;总结了利用沉降观测数据控制填筑速率、推算工后沉降量并计算沉降土方量的方法。对保证工程质量、节省施工成本具有积极意义。

The control of soft soil subgrade construction is a important llnk of building the high - type highway project. Traditionally, only a choice of construction method is valued, but the monitoring and controlling of construction process are neglected. As example with construction of soft soil subgrade at Donggang Section （paddy field） on Dan - Da Freeway, the paper puts forward and introduces the application of settlement and displacement observing in filling the subgrade at soft soil area and the practical operation of observation. The paper sums up yet the control of fill rate with data obtained in settlement observing, calculates the settlement after construction and gets the methods for settlement earthwork computing, which have active significance to ensuring the project quality and saving the construction cost.