Conventional open‐cut tunnel construction is often characterized by low levels of automation, poor interprocess coordination, and limited overall efficiency. To address these challenges, this study introduces the integrated mobile on‐site factory method (MOFM), applied in Section 6 of the Xiong’an underground segment of the Xiong’an‐Xinzhou High‐Speed Railway in China. MOFM aims to intelligentize the entire open‐cut tunnel construction workflow by deploying a mobile factory system encompassing key stages such as steel bar binding, concrete formwork placement, vibration, and curing. Several innovative technologies have been developed and implemented, including microload balancing conversion for lining reinforcement systems, precise control of high‐performance concrete, and an integrated intelligent collaborative control system. Field applications demonstrate substantial performance gains: MOFM reduces the curing age difference between the lining and invert concrete by 16 days, accelerates early strength development by 40%, enhances concrete forming efficiency by 50%, and decreases human–machine input by 30%. Moreover, the construction duration per tunnel formwork is reduced by 1.5 days, yielding a 24% improvement in overall construction efficiency. These improvements demonstrate that MOFM not only enhances construction productivity and quality control but also promotes the transformation of conventional open‐cut tunnel construction toward intelligent, industrialized, and sustainable practices. The results highlight MOFM as a scalable and replicable model for intelligent construction in large‐scale urban infrastructure projects.
Yang et al. (Thu,) studied this question.