To study the impact of different segmentations of tunnel rings on the load-bearing performance of prefabri-cated linings in drilled and blasted highway tunnels,this paper uses an experimental section of a highway tunnel proj-ect.By establishing a finite element model of the tunnel structure,the study analyzes how different segmentations of tunnel rings and varying joint stiffness affect the structural performance of the prefabricated lining.The results indi-cate that as joint bending stiffness increases,the ring axial force slightly decreases,with the maximum axial force oc-curring at the arch foot.As the number of lining segments increases,the maximum axial force,maximum displace-ment,and maximum rotation increase,while the maximum positive/negative bending moments slightly decrease.The joint sections are generally under compression,which is beneficial for structural performance and joint waterproofing.The research provides a reference for analyzing the load-bearing performance of linings in similar projects.
关键词
钻爆法隧道/装配式衬砌结构/管片分块/接头刚度
Key words
drilling and blasting tunnel/prefabricated lining structure/segment division/joint stiffness
维普
万方数据