Analysis of In-situ Protection of Large-diameter Sewage Pipelines Crossing Subway Foundation Pits
During the excavation process of subway station pits,it is common to encounter large-diameter rigid pipelines that cannot be relocated.These pipelines have poor resistance to deformation,are heavy,and their joints are prone to damage,complicating their protection.Moreover,the in-situ protection and construction of large-diameter rigid pipelines present challenges,and their subsequent removal is cumbersome,leading to significant manpower and resource consumption.In response to this issue,this paper proposes an in-situ suspended protection system for the sewage pipeline at the subway station pit located at the intersection of Guannan Avenue and a planned road in Kunming.Designed to be simple,safe,and economical,this system employs the finite element software Midas GTS to simulate the pit's excavation process,analyze the stress and deformation of the pipeline and surrounding structures,and explore the reliability of the in-situ suspended protection system,construction procedures,and design of the surrounding structures.The results demonstrate that the proposed in-situ suspended system,with its structural simplicity,logical design,and ease of construction,significantly improves the stability and safety of protecting large-diameter rigid pipelines.Furthermore,the proposed construction scheme effectively ensures the safety control of the surrounding structures and the efficacy of the in-situ suspended protection system.
subway stationlarge diameter pipelinesuspension systemfinite element analysisin situ protection
万方数据
维普
