Study On The Influence Of The Construction Of Deep Foundation Pit On The Buried Pipeline And Corresponding Measures In Subway Station

At present, with the continuous progress of China’s urbanization and the increasing scale of the city,more and more urban rail transit construction will be put on agenda to meet the needs of production and living condition of urban residents. We should give more attention to the deep foundation pit construction of the subway station which are surrounded with complex environment, As urban lifeline,municipal pipeline system plays an important role in daily life and is closely bound up with people’s life.Accidents caused by broken pipes are endless.Therefore it is necessary to study about the influence and countermeasures on buried pipeline adjacent to a deep foundation pit of the subway station.This thesis based on the deep foundation pit of DongGuan R2 line HongFu road station,taking surrounding environment and construction monitoring into account to analyze the characteristics of nearby pipeline deformation caused by foundation pit excavation through numerical methods.Pointing out the deformation feature and prominent area along the longitudinal direction of the pipeline. Providing reference for construction.Numerical method is adopted to analyze how the relative location of the pipeline affect the deformation distribut characteristics,including horizontal and vertical relative This paper put forward countermeasures to the deformation of nearby pipeline.The relationship between the deformation characteristics of the nearby pipeline and different soil reinforcement height or width in passive area and different soil reinforcement width under the pipeline and different soil reinforcement height aside the pipeline are numerical respective.At the same time,comparing the renforcement effects of this three pipeline countermeasures.As Flac3D has a weak interactive pre-processing module.Hypermesh pre-processing module is introduced into this paper to discrete physical model after summarizing the experience of predecessors,by this way,it can be more easier to use for various needs in scientific research.