Analysis of the Influence of Foundation Pit Construction on the Safety of Adjacent Subway Tunnel Structure
Based on the construction of the subway building near Lanzhou,the stress and deformation cha-racteristics of the subway tunnel structure are analyzed by using the three-dimensional finite element analy-sis method. By analyzing and researching similar research conclusions at home and abroad,establish defor-mation control standards for the impact of construction on the safety of rail transit structures in this project;The analysis shows that the excavation of foundation pit will produce certain deformation and stress changes in the subway tunnel structure,but they are within the range of authority control values,and have little im-pact on the changes in the stress of the tunnel structure;The additional loads after the completion of the pro-posed project will not directly spread to the tunnel structure,and the stress impact on the rail transit struc-ture is controllable;The analysis and evaluation methods and engineering cases used in this paper can pro-vide reference for the safety impact assessment of existing.
metro tunnelsfoundation pit constructionstructural deformationthree dimensional finite elementbuilding load
万方数据
维普
