Research Of Undercrossing Construction Security Effect Factor In Changchun Subway Station

The current increase of subway construction in our country, new tunnels undercrossing existing building structures more and more.Due to undercrossing construction,required high,difficult,more risk factors,more large social influence.Therefore,in the construction to co-ordinate the over all situation,grasp the construction hazards exist and develop a reasonable solution plan,and the possibility of accidents is reduced to a minimum.This paper,through the construction process in Changchun subway station undercrossing construction,from the scene by human factors,physical factors,environmental factors,management factors refine your search on the risk factors section of the construction site excavation are analyzed.By LEC evaluation method gives semi-quantitative evaluation of hazards,D values based on the evaluation results,summed up the impact on the structure of the existing line to undercrossing safety control under section focuses on construction.By in different designs,different construction conditions,using the finite difference simulation software FLAC3 D through construction,through the displacement of the surface and the bottom line of both monitoring points sedimentation analysis to determine the safety of a small settlement to ensure construction excavation the way.