| 基于椭圆拟合的隧道断面监测及其应用 |
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| 引用本文： | 赵兵帅,黄腾,欧乐.基于椭圆拟合的隧道断面监测及其应用[J].水利与建筑工程学报,2013,0(1):130-133. |
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| 作者姓名： | 赵兵帅 黄腾 欧乐 |
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| 作者单位： | 河海大学地球科学与工程学院； |
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| 摘 要： | 基于最小平方中值法提出了一种改进的方法,即先进行最小平方中值法拟合,再用样本中位数剔除数据中的粗差,最后用最小平方中值算法拟合椭圆曲线,增强了拟合结果的稳健性。通过高精度的椭圆拟合,可以计算出每次的变形量,且提出的收敛比例很好地反映了隧道断面某一部分的微变形趋势。利用新模范马路隧道的监测数据进行了验证。更多还原
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| 关 键 词： | 隧道断面 椭圆拟合 最小平方中值 稳健算法 形状误差 收敛比例 |
Application of Tunnel Profile Monitoring Based on Elliptic Fitting |
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| ZHAO Bing-shuai,HUANG Teng,OU Le.Application of Tunnel Profile Monitoring Based on Elliptic Fitting[J].Journal of Water Resources Architectural Engineering,2013,0(1):130-133. |
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| Authors: | ZHAO Bing-shuai HUANG Teng OU Le |
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| Affiliation: | (College of Earth Science and Engineering,Hohai University,Nanjing,Jiangsu 210098,China) |
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| Abstract: | On the basis of least square method,an improved method is disclosed in this paper.Firstly,conducting least-square fitting,then using the sample median to eliminate the gross errors in data,finally,the least-square algorithm is used to fit the elliptic curve.This method could enhance the robustness of the fitting results.Here,each of the deformation is calculated by high-precision ellipse fitting,and the convergence ratio is of great response to the trend of the micro-deformation of tunnel cross-section.Moreover,the data of Xinmofan Road tunnel is used to validate this method,and the result is good. |
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| Keywords: | tunnel section ellipse fitting least-square median robust algorithm shape error convergence ratio |
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