总结了北京地下直径线工程大直径盾构管片拼装技术，初步分析了大直径盾构钢筋混凝土管片施工过程中的表观破损原因，并对破损管片修补技术进行探讨，提出对拱腰以上、拱腰以下部位管片的不同修补方法，保证了大直径盾构管片的强度及外观质量。

In the paper, the segment assembling techniques of large-diameter shield were summarized, and the apparent damage reasons and repair technology of large-diameter shield reinforced concrete segment in the construction were preliminarily analyzed, based on research of the underground diameter project from Beijing railway station to Beijing railway west station. The different repair methods were proposed for the segments above hance and below hance, respectively, assuring the good strength and surface quality of large-diameter shield segment.