Abstract: Tunnel structural deformation was defined to include not only geometric deformation, but also elastic deformation of segments and rigid deformation induced by joint opening. To ensure the construction safety of super large diameter shield tunnels and to address the technical challenge that a single monitoring method could not balance real time performance and accuracy, a segment deformation monitoring algorithm based on real-time interaction between software and hardware was proposed. Strain and rotation angle data were fused by Kalman filtering to obtain real time absolute convergence information of segments. The proposed algorithm was applied to the Jinan Yellow River Tunnel project and verified by laser scanning data. The results showed that the fusion algorithm could effectively suppress sensor noise, improve monitoring accuracy by over 30% compared to conventional methods, and achieve favorable real time performance and stability. A new technical idea for deformation monitoring of large-diameter shield tunnels was thereby provided.
陈俊伟, 施江杰, 全良臣, 张宇. 基于软硬件实时交互的大直径盾构隧道管片收敛变形监测[J]. 隧道与地下工程灾害防治, .
Chen Junwei, Shi Jiangjie, Quan Liangchen, Zhang Yu. Monitoring on segment convergence deformation of large-diameter shield tunnels based on real-time cyber-physics interaction. Hazard Control in Tunnelling and Underground Engineering, 0, (): 1-16.
