为了研究掘进速度和浆液凝胶时间对盾构隧道管片上浮的影响，本文依托苏州地铁5号线通园路站～星港街站盾构区间，采用Winkler弹性地基梁建立盾构管片三维有限元荷载结构模型，分析了掘进速度和注浆凝胶时间对管片上浮和错台的影响，研究结果表明，管片上浮和错台随着盾构掘进速度的增加而增大，上浮主要出现在浆液未凝段管片底部，错台主要出现在浆液未凝固段与盾尾段和浆液凝固段的交界处，为避免管片上浮量和错台量超过规范要求，盾构掘进速度不能超过 10环/d。其次，随着浆液凝胶时间的延长，管片上浮量和错台量逐渐增大，选用速凝早强的双液浆进行背后注浆有利于控制盾构隧道上浮。

In order to study the influence of excavation speed and slurry gel time on the segment floating of shield tunnel, this paper uses Winkler elastic foundation beam to establish a three-dimensional finite element load structure model of shield segment based on the shield interval between Tongyuan Road Station and Xinggang Street Station of Suzhou Metro Line 5, and analyzes the influence of excavation speed and grouting gel time on the segment floating and dislocation. The research results indicate that the floating and staggering of the segments increase with the increase of shield tunneling speed. The floating mainly occurs at the bottom of the segments in the non solidified slurry section, and the staggering mainly occurs at the junction of the non solidified slurry section, the shield tail section, and the slurry solidification section. To avoid the floating and staggering of the segments exceeding the specification requirements, the shield tunneling speed cannot exceed 10 cycles/d. Secondly, with the extension of grout gel time, the segment floating amount and dislocation amount gradually increase. The use of quick setting and early strength double grout for back grouting is conducive to the control of shield tunnel floating.