矩型管廊作为地下综合管廊建设中的异形截面管廊，其上浮过程对土体的影响相较于传统圆形管廊更为复杂，然而目前对于矩型管廊上浮过程管土相互作用的研究较少。针对该问题，开展了矩形管廊上浮过程管土相互作用透明土模型试验，重点测量和研究了管廊上浮过程中不同密实度及不同埋深状态下矩形管廊的p-y曲线变化及管廊周围土体的位移场变化，并深入分析了管周土体的位移变化面夹角。研究结果表明：不同密实度下不同矩型管廊埋深位置处的p-y变化趋势相似，都经历了线性上升、峰值变化、快速下降和缓慢下降阶段；矩型管廊密实度及埋置深度越大，其变化幅度及最大承载力值越大；相同埋深处的矩形管廊在上升过程中不同阶段时的土体位移场变化类似，且会管周土体位移会随着阶段的递进从整体向上移动逐步转化为管廊上下部向上移动四周向下移动；相同密实度下同等埋深处的土体位移变化面夹角会随着上升高度的增加而增加。

As a type of non-circular section corridor in the construction of underground comprehensive pipe corridors, the uplift process of rectangular pipe corridors has a more complex impact on the surrounding soil compared to traditional circular corridors. However, there is currently limited research on the pipe-soil interaction during the uplift process of rectangular pipe corridors. To address this issue, a transparent soil model test was conducted to study the pipe-soil interaction during the uplift process of rectangular pipe corridors. The focus was on measuring and analyzing the changes in the p-y curves of the rectangular pipe corridors at different densities and burial depths, as well as the displacement field changes of the surrounding soil. The research findings indicate that the p-y curve trends at different burial depths of the rectangular pipe corridor exhibit similar characteristics under varying densities, going through phases of linear increase, peak variation, rapid decline, and gradual decrease. The greater the density and burial depth of the rectangular pipe corridor, the larger the amplitude of change and the maximum bearing capacity. The displacement field changes of the soil at the same burial depth during different stages of the uplift process are similar, with the surrounding soil displacement transitioning from an overall upward movement to localized upward movement at the upper and lower sections of the corridor while the surrounding areas move downward. Additionally, at the same density and burial depth, the angle of the displacement change surface of the soil increases with the height of uplift.