Research And Application Of Comprehensive Construction Technology For Shunting Construction Of Deep Foundation Pitin High-rise Buildings

With the rapid development of urbanization,more and more deep-pit projects have been invested at home and abroad,and the country has gradually attached importance to the development and utilization of underground space.The continuous accumulation of practical experience in deep excavation engineering projects has made the design principle and construction technology of deep excavation projects more and more mature.According to the uniqueness of the geological location,geological and hydrological conditions of the foundation pit project,the shape of the foundation pit,the surrounding environment of the foundation pit and other engineering restrictions,different construction problems will inevitably be encountered during the design and construction of the foundation pit project.By solving these construction problems,we can further summarize and explore more applied construction processes and methods.The integrative construction of Shun-Contravention is a construction process with simple construction principles and obvious social and economic benefits,which is explored through practical experience.However,when the comprehensive construction process of Shun-Contravention is applied to deep excavation,the theoretical calculation is difficult and the process is complicated,and there are many limitations in the construction environment.Therefore,finite element analysis software is usually used in engineering practice to cooperate with theoretical calculations and to compile construction organization designs.This article takes a commercial complex deep foundation pit project as the research object,applies comparative research,establishes model analysis and research and case analysis research methods,and starts from the perspective of safety and stability control of foundation pit,economic benefits of construction scheme,construction organization and management,etc.for study on the application of the comprehensive construction process of Shun-Contravention.This paper systematically analyzes the requirements for changes in deep foundation pit engineering projects,applies a combination of theoretical and practical analysis methods,proposes changes and uses finite element analysis software to simulate and verify the feasibility of the change plan.Refer to the finite element software analysis and study.The results obtained will further optimize the design of foundation pits and construction plans,and achieve pre-control,cost savings,and time-saving management.This paper uses MIDAS GTS finite element analysis software to simulate and analyze the effect of excavation and unloading of soil on the influence of deep excavation on the soil surrounding the foundation pit,the surrounding protection of the foundation pit,and the supporting structure of the foundation pit,etc.,for the construction of the deep foundation pit project.The foundation pit stability in the process provides a theoretical basis and provides empirical references for similar underground engineering design and construction.