在役隧道裂损衬砌局部套拱加固技术研究与应用  

Research and Application of the Local Arching Reinforcement Technology for Cracked Lining in Operational Tunnels

作　　者：宋京 万利 张长安 吴涛 SONG Jing;WAN Li;ZHANG Changan;WU Tao(Shandong Provincial Communications Planning and Design Institute Group Co.,Ltd.,Jinan 250000)

机构地区：[1]山东省交通规划设计院集团有限公司,济南250000

出　　处：《现代隧道技术》2025年第1期267-274,共8页Modern Tunnelling Technology

摘　　要：针对常规套拱结构加固隧道裂损衬砌易侵入建筑限界的问题,提出一种局部套拱加固技术,在隧道顶部范围设置局部套拱结构,其曲线段两端设置直线段,利用直线段和二次衬砌间的曲率差使结构两端可在任意位置嵌入二次衬砌,有效避开易侵限区域;局部套拱内嵌格栅钢架,既作为提高结构承载力的永久构件,又用作局部凿除二次衬砌期间的支撑结构;按照“分段施工、合理规划、分部凿除、随凿随支”的理念,提出配套施工方法确保二次衬砌凿除期间的结构安全;通过在某隧道衬砌加固中的应用论证其可行性,并在扩展应用和优化设计方面提出建议。该技术对弧形断面隧道均适用,可有效提高套拱加固方法在隧道裂损衬砌治理中的适用性。In response to the issue where conventional arching reinforcement structure for tunnel cracked lining easily invade the construction clearance,a local arching reinforcement technology is proposed.A local arching structure is set up in the tunnel's roof area,with curved segments at both ends of the arching structure connected to straight segments.The curvature difference between the straight segments and the secondary lining allows the reinforcement structure's ends to be embedded into the secondary lining at any location,effectively avoiding the clearance inva-sion area.The lattice girder is embedded within the local arching structure,serving both as a permanent component to increase the structure's load-bearing capacity and as a support structure during the removal of the secondary lin-ing.A construction method based on"segmented construction,reasonable planning,partial removal,and support while removal"is proposed to ensure structural safety during secondary lining removal.The feasibility of the technol-ogy is demonstrated through its application in reinforcing a tunnel lining,and suggestions for expanding its applica-tion and optimizing its design are provided.This technology is suitable for arcuate section tunnels and can effective-ly improve the applicability of arching reinforcement methods in tunnel cracked lining treatment.

关 键 词：在役隧道 裂损衬砌 局部套拱 加固技术 

分 类 号：U459.4[建筑科学—桥梁与隧道工程]