大直径盾构管片裂纹成因分析

针对盾构隧道大直径管片施工技术的重、难点,结合在武汉长江隧道盾构管片施工过程中的实际经验,介绍了大体积盾构管片施工过程中不同裂纹类型、形成原因及控制重、难点,对关键工序及关键工艺进行重点介绍,并简要介绍了常见问题及其对策。

The analysis for the cracks of large diameter shield tunnel segments

This article is directed the key of large diameter of segments the construction technology in tunnels.Integrate with practical experience of the process of segment construction in the Changjiang River tunnel of Wuhan,introduce the type of different cracks,reasons come into being and how to control the keypoint in the process of large size segments construction,emphatically introduced the key of working procedure and technics in process of segments construction.Finally,simply introduced the hackneyed problems and the countermeasure.