Study On The Interaction Between The Existing Structure And The Construction Of New Subway Station

With the rapid developm ent of urban cons truction,the rail transit construction becomes an ef fective measure to solve the shortage of urban space.W hile the complex surroundings of under ground engineering has been a new challenge.In recent years,more and more approading engineering has been out in the city.Though there are many analysis on interaction ef fect of foundation pit engineering and the surrounding environment.But the affect on existing adjacent buildings construction still need to further discussed.Base on Shenzhen Metro New Line 1 1 station closes to ex isting Metro Line 1 station and a under ground commercial street structure,the paper uses the FLAC3 D software to build the th ree-dimensional numerical calculation model of the m ain structure of the standard section of the new No. 11 metro station, and simulates the construction process of the cover excavation reverse construction method to analysis the influence of ground subside, Metro Line 1 station structure an d the structure of underground commercial street,who are unde r the construction of the new station structure. At the sam e time, the paper builds the m odel of existing structure in the construction to analysize the soil displacement, the new structure and the diaphragm wall.Through the analysis of the result s of numerical calculation,the paper summarizes the situation of the new construction closes to the existing structure,and draws the conclusions that the foundation p it excavation is safe.The research can provide referece for similar engineering,and prospect for the futher research.