盾构隧道设计轴线偏移解析算法研究  

Study on analytical algorithm of design axis offset of shield tunnel

作　　者：李永明 李长俊 郑国平[2] 陈秀平 Li Yongming;Li Changjun;Zheng Guoping

机构地区：[1]浙江数智交院科技股份有限公司,浙江杭州310030 [2]浙江工业大学土木工程学院,浙江杭州310014 [3]绍兴市柯桥区交通投资建设集团有限公司,浙江绍兴312081

出　　处：《现代城市轨道交通》2022年第5期35-38,共4页Modern Urban Transit

基　　金：浙江省交通运输厅科研计划项目(2019010、2021027)。

摘　　要：由于盾构隧道的设计轴线与导航基准线往往不一致,为更加精确地为盾构隧道掘进提供导航、指导拼装排版,需要确定导航基准线的平、竖曲线参数。为此,文章采用解析方法研究隧道平曲线的偏移解析算法,然后基于投影方法提出竖曲线的偏移解析算法,最后用一个实际区间隧道作为算例演示该算法的准确性。该算法可以实现设计轴线到导航基准线或结构中心线等的任意位置的偏移计算,也可运用于道路定点、放样等操作中。As the design axis of shield tunnel is often inconsistent with the navigation datum line,in order to get more accurate navigation and guide the segments assembly arrangement of shield tunnel excavation,it is necessary to determine the horizontal and vertical curve parameters of the navigation datum line.Therefore,the analytical method is used to study the offset analytical algorithms of tunnel horizontal curves,and then the projection method was used to solve the offset analytical algorithm of vertical curve.An actual interval tunnel was used as an example to demonstrate the accuracy of the algorithm at last.The algorithm can realize the offset calculation from the design axis to any position of the navigation datum line or structure centerline and can also be used for road fixed-point and setting out as well.

关 键 词：盾构隧道 设计轴线 偏移 解析算法 

分 类 号：U452.2[建筑科学—桥梁与隧道工程]