随着城市地下空间密集化与立体化发展,临近施工对既有盾构隧道扰动案例频发,对其安全运营造成严重威胁。首先,考虑临近基坑开挖、近接隧道穿越和地表超载3种典型临近施工扰动类型,系统综述不同类型临近施工扰动对盾构隧道结构的扰动机制、影响因素与响应规律。然后,围绕临近施工扰动下盾构隧道结构变形控制与修复方法,从阻断扰动传递路径、结构性能提升、地层加固和隧道变形恢复4个方面进行总结分析。最后,针对目前临近施工扰动下盾构隧道结构领域研究的不足,提出未来的研究方向,建议加强基于深度学习的临近施工扰动下既有盾构隧道变形响应机制、结构-地层协同的既有盾构隧道韧性提升优化以及监测感知-时变评价-提升决策一体化智能管控集成平台3个方面的研究。
With the densification and three-dimensional development of urban underground space, disturbances to existing shield tunnels induced by adjacent construction have become frequent, posing severe threats to their operational safety. Accordingly, considering three typical disturbance types of adjacent pit excavation, proximity tunnel crossing, and surface surcharge, this paper systematically reviews the disturbance mechanisms, influencing factors, and response patterns of shield tunnels under different types of adjacent construction disturbances. On this basis, focusing on deformation control and restoration methods for shield tunnel structures under adjacent construction disturbances, a systematic summary and analysis are conducted from four aspects, including blocking disturbance transmission paths, enhancing structural performance, reinforcing the ground, and deformation restoration. Finally, basedon current research gaps in the field of shield tunnels under adjacent construction disturbances, future directions are proposed. It is suggested that future research should strengthen three aspects: deformation mechanisms elucidating tunnel responses to construction disturbances based on deep-learning, resilience enhancement optimization through tunnel-soil interaction modeling, and integrated intelligent management platforms unifying monitoring perception, time-dependent assessment, and enhanced decision-making.