Research And Fulfillment For Constructing New Buildings In Metro Protection Area

Being a green rail transit vehicle, metro becomes more and more important inpeople‘s daily living. As society constructions moving fast, more and more structureswere build surround metro line. This article is based on the protection of metro lineduring the construction underground, and focus on the protection of construction NanMa Road Metals center affecting the metro station Xi Nan Jiao. It contents projectfoundation monitoring, settlement monitoring and metro special project influenceanalysis. And then supply reference for the safety of new underground projectsurrounding metro line.The main content and research result include:Under history of china metro development, mainly unscramble metro Hongkong,metro Shanghai, and metro Tianjin development and their metro protecting areaconcept. Combined with real project of Tianjin metro protecting process and its safety,ensure the safety in construction according to metro impact analysis, foundation pit,excavation demonstration and other monitoring methods.The nearest distance from Nan Ma Road Metals center project to metro line2tunnel is only20meter, thus supplying technical reference to other similar projects.By using computer software of geotechnical engineering finite element analysis“Plaxis” to simulate the process of excavation of foundation pit. Forecast the metroline2shield tunnel position changing according to simulated consequence ofexcavation of foundation pit, and supply technical support to other similarconstructure nearby metro tunnel.Analysis on the impact of excavation of foundation pit and rain dropping tometro line in the process of construction, ensure normal operation of metro line2.Quote real monitoring data to compare with reference data of project design.Our country is under fast development. The contradiction is extreme betweenmetro line and new constructions. As more and more construction of metro lineprotection, it only supplies reference to other projects. Using the concept of metro lineprotection construction into the city development, this article can supply massycondition and wide future while popularized.