中国铁道科学2026，Vol.47Issue(2)：175-185,11.DOI:10.3969/j.issn.1001-4632.2026.02.15
服役隧道仰拱上抬病害机理分析与整治措施
Mechanism Analysis and Treatment Measures for Inverted Arch Uplift in In-Service Tunnel
摘要
Abstract
To address the mechanism analysis and treatment of inverted arch uplift and track slab cracking in an in-service tunnel,a combined approach of field structural disease characteristic analysis and laboratory tests was adopted to explore the disease mechanism of inverted arch uplift deformation and track slab cracking in an in-service tunnel of the Shanghai-Kunming Railway.According to the analysis of structural cracking characteristics and disease mechanism,integrated treatment measures of"grouting anchor pipe installation-bedrock grouting and removal-reconstruction of inverted arch structure"was proposed.These measures were adopted to guide the construction of the background project,and the evolution laws of the contact stress between the bedrock and the inverted arch was monitored and analyzed during the construction process.The results indicated that:the expansion deformation of bedrock upon water exposure was the main cause of local uplift of the inverted arch and other supporting structures,leading to increased internal forces,uneven deformation,and cracking;factors such as bedrock bearing capacity reduction,stress concentration induced by local high in-situ stress,and uneven stiffness and stress distribution in the invert arch structure further exacerbated the risk of non-coordinated deformation and cracking in the bedrock-invert arch system;the contact stress between the bedrock and the reconstructed inverted arch showed a phased evolution pattern,initially increasing slowly and then gradually converging to stability.The average contact stresses at three monitoring sections were 167.83,169.51 and 165.82 kPa,respectively,which ensured the stability and safety of the tunnel structure.The treatment measures in combination with the disease mechanism analysis effectively prevented and controlled inverted arch uplift and structural cracking in the in-service tunnel.The research results provide a design scheme and engineering application reference for the treatment and prevention of similar engineering diseases.关键词
服役隧道/围岩膨胀/仰拱抬升/机理分析/病害整治Key words
In-service tunnel/Surrounding rock expansion/Inverted arch removal/Mechanism analysis/Disease treatment分类
交通工程引用本文复制引用
范胜元,加武荣,谢江胜,田思思,宋战平,刘博,李曙光..服役隧道仰拱上抬病害机理分析与整治措施[J].中国铁道科学,2026,47(2):175-185,11.基金项目
国家自然科学基金资助项目(52178393) （52178393）
中国博士后科学基金资助项目(2024M763843) （2024M763843）
陕西省创新能力支撑计划项目(2020TD-005) （2020TD-005）
优博基金资助项目(2021XYBPY002) （2021XYBPY002）
