地铁盾构隧道洞门中心的一种求解方法

摘要

This paper provides a new solution of getting the portal center coordinate of metro shield tunnel .Taking the second phase of Wuhan Metro Line 4 as an example ,in the right line of Yulonglu station to Yongantang station ,using the field measuring data ,this method can calculate the portal center coordinate .Comparing with other methods ,the re-sults show that this precision can meet the requirement of design ,construction .Because it does not need adjustment ,only need the AutoCAD in the whole calculation ,so it’ s quite convenient for related employees to grasp the principle .%提出了一种地铁盾构隧道洞门中心求解的新方法。以武汉市轨道交通四号线二期工程玉龙路站～永安堂站右线盾构区间永安堂车站洞门为例，利用外业实测数据推导计算出洞门中心坐标，并与其他方法进行比较，结果表明：该方法能满足设计、施工的精度要求。由于无需平差，只需借助AutoCAD软件便可求出洞门中心坐标，因此可大大方便相关从业人员快速掌握其原理，推广应用。