为探究新型无轨工装工艺在地铁铺轨施工中的应用，以苏州轨道交通5号线115块装配式轨道板铺设工程为依托，结合轨道结构特点、有限元力学性能分析、工装机具配置和铺设流程，分析无轨化工艺在预制板式道床铺设施工效率、精度以及机械化替代劳力等方面的优势。分析结果表明： 1）板式无砟轨道结构设计合理，力学特性良好； 2）相较传统铺轨模式，无轨工装工艺可降低对工具轨的依赖、减少对管片的损害，可显著提高施工效率、组织灵活性和安全性； 3）预制装配式板式无砟轨道技术，通过创新轨道结构形式、简化轨道施工工艺、研发成套铺轨设备等工作，省去传统预制板式道床结构中的钢筋设计，加快了传统自密实混凝土的加工、运输、灌注进程，大幅降低了施工质量控制难度，可节省工序10余道，减少用工数量约70%，使填充层灌注效率提高约3倍，综合施工进度提高约2倍。

In this paper, a case study is conducted on laying of 115 prefabricated track slabs in Suzhou rail transit line 5, the advantages of trackless technology in the construction efficiency and accuracy and mechanization instead of labor of the laying of precast slab track beds are discussed based on the characteristics of track structure, finite element mechanical performance analysis, tooling configuration, and laying process. The analytical results show the following: (1) The design of the ballastless track is reasonable and the mechanical properties are good. (2) Compared with the traditional track laying mode, the trackless tooling process can reduce the dependence on tool rails and the damage to the segments, and can significantly improve the construction efficiency, organizational flexibility, and safety. (3) The prefabricated slab ballastless track technology eliminates the need for steel bar design in the traditional prefabricated slab track bed structure and speeds up the process of processing, transportation, and pouring of traditional selfcompacting concrete by innovating track structure types, simplifying track construction techniques, and developing complete sets of track laying equipment. It greatly reduces the difficulty of construction quality control, saves more than 10 processes, reduces the number of labor by about 70%, improves the filling layer perfusion efficiency by about 3 times, and improves the comprehensive construction progress by about 2 times.