高铁隧道平面控制网横向贯通误差仿真研究

发布时间：2018-06-30 09:38

本文选题：高铁 + 仿真计算　；参考：《铁道科学与工程学报》2015年01期

【摘要】：构建附合单导线、导线环网、交叉导线网和自由测站边角交会网等4种常见的高铁隧道洞内仿真平面控制网,利用精度估算的方法计算这4种网型在9种不同隧道长度情况下的横向贯通中误差;基于Box-Muller算法为仿真控制网添加随机误差,利用稀疏矩阵行列压缩技术对附加随机误差的控制网进行快速严密平差计算,从而完成4种隧道洞内平面控制网横向贯通误差的仿真计算工作。计算结果表明自由测站边角交会网的横向摆动相对较小,可以替代传统的洞内导线网;证明隧道洞内平面控制网的横向摆动服从正态分布,适当增加测量次数,可提高隧道的横向贯通精度,对确保长大隧道正确贯通具有参考意义。
[Abstract]:Four common high-speed railway tunnel simulation plane control networks are constructed, which include single traverse, traverse loop network, cross traverse network and free measuring station side angle intersection network. The accuracy estimation method is used to calculate the transverse traversing error of these four network types under 9 different tunnel lengths, and the random error is added to the simulation control network based on Box-Muller algorithm. The sparse matrix column compression technique is used to calculate the control network with random errors quickly and strictly, so as to complete the simulation and calculation of the horizontal transfixion error of the plane control network in four kinds of tunnels. The calculation results show that the lateral wobble of the intersection network of the free measuring station is relatively small, which can replace the traditional traverse network in the tunnel, and it is proved that the transverse swinging clothing of the plane control network in the tunnel is normal distribution, and the measuring times are increased appropriately. It can improve the transversal accuracy of the tunnel and has reference significance for ensuring the correct transfixion of the long tunnel.
【作者单位】：西南交通大学地球科学与环境工程学院;
【基金】：中央高校基本科研业务专项资金资助项目(SWJTU12ZT07) “2011计划”轨道交通安全协同创新中心经费资助项目
【分类号】：U452.1

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