APPLICATION OF SPLINE INTERPOLATION FUNCTION ON ANALYSIS OF DISPLACEMENT MEASURED IN TUNNEL
样条函数插值在隧道施工监控 位移分析中的应用

The spline interpolation function is calculated from the field measured displacements at key lining points and is used to replace the real displacement function of lining approximately. With the interpolated displacements of lining points, the necessary number of field measurement data can be provided for back analysis and stability analysis. The accuracy of the interpolation method for measured lining displacement is analysed with the existing standard for lining design of railway tunnel in several kinds of rock. The Monte carlo random simulation is also introduced in this paper for the interpolation of random measured data.