The analysis result indicates that the problem of shield segments floating is concerned with the self-weight of segments, overburden the buoyancy, and the characteristics of the segments.

• 分析结果表明：隧道上浮问题的产生与否不仅与管片自重、上覆土荷载以及受到的浮力大小有关，也与管片本身特性有关；