Liberation Street Of Civil Air Defense Engineering Of Foundation Pit Excavation On Adjacent Building Influence Research

With the city development and utilization of underground space and the high-risebuilding ’s massive construction, resulting in a large number of deep foundation pitengineering, its scale and depth of excavation are increasing. City in the foundation pitengineering is usually under dense buildings, narrow construction site, buildings orstructures of foundation and foundation pit adjacent to, in this environment thefoundation pit engineering, if using the existing foundation pit engineering theory (thestrength of the control theory and the conventional construction techniques) has beendifficult to meet the requirement of environment protection around deep foundation pit.At present, many scholars and engineers have been in foundation pit engineering onsurrounding environment influence made a lot of study, but in the process of pitexcavation induced settlement of buildings and building its own attribute of therelationship between the two, there are still many problems to be solved.According to the foundation pit excavation in the impact is discussed, analysis ofthe foundation pit excavation deformation causes, discusses on construction offoundation pit supporting structure deformation and ground settlement caused by factors.In this paper, the research in this field were reviewed and summarized, with the city ofFuxin liberation Street commercial street foundation pit project as the background,considering land field and site layout of the actual situation, the foundation pitsupporting structure, and the adjacent buildings on the same system of research andanalysis, using the project of numerical analysis software FLAC3D, the excavation ofthe whole process of3D finite element simulation, simulation analysis of foundation pitexcavation on rubble mound foundation and pile foundation of two different buildingscaused by impact, and put forward to building protection measures; according to thenumerical results and the actual monitoring data analysis, not only to find a foundationpit during the excavation of foundation pit supporting structure and surrounding surface,adjacent building deformation, but also demonstrates the feasibility of foundation pitsupport program, for the deep foundation pit construction safety provides guidance,research results will also be on the future numerical analysis and other research hasreference value.