铁路路基加宽对既有线沉降影响研究

Study on the Influence of Railway Subgrade Widening on the Subside of Existing Lines

沉降控制是铁路路基施工的关键技术。本文以某铁路路基加宽工程为依托,通过对铁路路基沉降数据分析,得出路基加宽后对既有线变形影响较大;进一步对路基加宽中新老路基的沉降问题进行有限元分析,探讨加宽路基对既有线沉降影响程度,得出加宽路基对既有线沉降影响的数值,所得结论可为类似工程的设计、施工提供参考。

Subside control is the key technology of railway subgrade construction. This article relies on a railway subgrade widening project, through the analysis of the subside data of the railway subgrade, it is concluded that the widened roadbed has a greater impact on the deformation of the existing line;finite ele. ment analysis on the settlement problem of new and old roadbed in roadbed widening is further studied,ex. ploring the degree of influence of widened roadbed on the subside of the existing line,and obtaining the ef. fect of widening the roadbed on the value of subside of the existing line,the conclusion can provide refer. ence for the design and construction of similar projects.