基于半参数回归分析法的隧洞变形量计算模型

Calculation Model of Tunnel Deformation Based on Half Parameters Regression Method

通过补充随时间连续变化的系统误差分量来分析该误差对变形量计算的影响,运用非线性方法建立了隧洞变形量计算模型.基于实测数据,采用多种方法对隧洞变形监测过程和模型产生的厘米级系统误差进行了消除,提高了现场量测结果的精度.计算结果表明,阻尼最小二乘法、卡尔曼滤波法和半参数回归分析法三种误差消除方法都能满足工程需要,其中半参数回归分析法对隧洞变形的计算结果与实际最为接近,对工程设计具有指导意义.

The centimeter- level system errors affecting tunnel deformation have been analyzed by supplementation of continuous variation system errors component. Calculation model of tunnel deformation has been established by nonlinear method. Based on measured data, methods were used to eliminate the centimeter - level system errors from the model and observation process. So, the measure precision was improved largely. The results show that the damped least square method, Kalman filter method and half parameters regression method can satisfy the engineer- ing demand. The results of the half parameters regression method are most close to paractical results. The method has guidance significance to engineering design.