摘要
收敛测量数据处理时椭圆模型存在不足,如观测数据剔除粗差的阀值设置困难等,氢此提出了多弧段拟合算法、实施步骤及算例,并实际数据处理成果表明,多弧段拟合法的计算成果与实际CAD展点图更为接近,并且能够通过横径变形、纵径变形、相对错台量、相对旋转角等方面参数,全面评定圆形盾构隧道多弧段断面的变形程度.
This study discussed the drawback of elliptical model in convergence measurement data processing. An algorithm with multi-arc fitting and its implementation procedure with numerical examples are proposed. The result of the algorithm is closer to the actual figure of exhibition points in CAD. Also,the deformation of the multi-arc sections of the shield tunnel can be comprehensively assessed using more parameters,such as diameter,longitudinal deformation,relative dislocation and rotation angle.
出处
《浙江水利水电学院学报》
2014年第2期50-54,共5页
Journal of Zhejiang University of Water Resources and Electric Power
关键词
收敛测量
椭圆模型
多弧段
convergence measurement
elliptical model
multi-arc
