双线铁路大直径盾构隧道管片结构空间内坐标解析研究  

Research on the Spatial Coordinate Analysis of the Two-track Railway Large-diameter Shield Tunnel Segment

作　　者：冯天炜 王朋乐 苏哿 朱战魁 FENG Tianwei;WANG Pengle;SU Ge;ZHU Zhankui(China Railway Design Corporation,Tianjin 300308,China)

机构地区：[1]中国铁路设计集团有限公司,天津300308

出　　处：《铁道标准设计》2021年第10期74-80,共7页Railway Standard Design

基　　金：中国铁路设计集团有限公司科技开发应用研究课题(2020YY340607)。

摘　　要：随着铁路盾构隧道直径增大以及接触网预埋槽道等新技术的应用,对现场管片拼装排布施工要求越发严格,因此,针对大直径盾构隧道管片结构空间坐标解析算法的研究十分必要。针对一般形式的双线铁路线型,采用参数化解析算法,对线路左线坐标进行计算,提出左线参数化三维坐标;基于左线参数方程及管片结构中线与线路左线的相对关系,提出一种四维坐标(x,y,z,φ)用于管片结构空间定位方法,其中,平面坐标(x,y)通过引入线间距D及中线偏位t参数进行求解,高程坐标z通过引入高程偏差H_(0)参数进行求解,转角坐标φ根据不同段落所需的楔形补偿进行求解。以国内某城际铁路大直径盾构隧道工程为例,对左线坐标和管片结构中心坐标进行计算,经验证计算方法可满足规范及工程要求。该计算方法可为盾构隧道施工纠偏与BIM设计提供技术支持。With the increase in the diameter of shield tunnels and the application of new technologies such as catenary pre-buried channels,the construction requirements of segment assembly on-site are getting more stricter.Therefore,it is necessary to conduct research on the spatial coordinate analysis for the large-diameter shield tunnel segment.According to the general form of double-track railway lines,the parameterization of the left line is analyzed and the three-dimensional coordinate is proposed.Based on the relative relationship between the middle line of the segment and the left line,the four-dimensional coordinate is proposed for the spatial positioning of the segment.Of the coordinates,the plane coordinate is solved by introducing the parameters of the width of the line spacing and the offset of the center line,the elevation coordinate is solved by introducing the elevation deviation parameter,and the corner coordinate is solved according to the wedge compensation required in different sections.With reference to a large-diameter shield tunnel project,the left-line coordinate and the center coordinate of the segment are calculated and verified,which proves that the calculation method could meet the specifications and engineering requirements and provide technical support for shield tunnel construction correction and BIM design.

关 键 词：双线铁路 铁路隧道 大直径盾构隧道 盾构管片 四维坐标 坐标解析 

分 类 号：U455.43[建筑科学—桥梁与隧道工程] U459.1[交通运输工程—道路与铁道工程]