Analysis On The Settlement Of Adjacent Buildings During The Excavation And Drainage Of Foundation Pit

In recent years,our country social economy sustained and rapid development of urbanization process is gradually thorough,the project is also increasing,between the new building is more and more intensive,and underground water level is relatively shallow,new construction projects need to dig deep foundation pit.Which involves the foundation pit precipitation,the influence of excavation on the surrounding buildings to form,the related problems is very serious must be caused take seriously.Although the foundation pit precipitation can provide more convenient conditions for the foundation pit excavation,but at the same time can also lead to supporting structure and surrounding soils between water pressure changes,and will most likely lead to foundation pit precipitation seepage,is likely to cause sand flow,flow phenomenon such as soil,serious when will lead to the surrounding buildings settlement.Combined with the above to learn about the new building engineering excavation of foundation pit and foundation pit precipitation must be caused take seriously.Article mainly relevant to a particular building project engineering foundation pit accident case around the foundation pit precipitation and excessive excavation on the surrounding buildings settlement aspects of research and analysis work,specific as follows:Based on the migration changes of groundwater in the soil a comprehensive research and analysis,at the same time around the groundwater plays the role of the retaining structure for soil and water,a comprehensive analysis of the interaction between soil and further analysis through engineering examples,determine the scope of the foundation pit precipitation of landing funnel.Through to the new construction of foundation pit precipitation of structure caused by the settlement of surrounding soils gives comprehensive analysis,and combining the relevant theories on the surrounding soil structure settlement difference a full calculation,and whether in the process of soil consolidation stress changes and the impact of changes in a comprehensive analysis,finally to carry out the new construction of foundation pit precipitation on the surrounding ground settlement caused by law.According to the practical case of foundation pit project 3-3 unit construction materials,further comprehensive analysis of underground water level and the surrounding deformation monitoring data.By combining theory calculation and software calculation,draw the foundation pit excavation and foundation pit precipitation of the actual damage to surrounding buildings settlement phenomenon and its law,further expand the foundation pit excavation and foundation pit precipitation on soil subsidence time effect and spatial effect of comprehensive analysis.By implementing the construction of foundation pit engineering data model,and then a more comprehensive and in-depth analysis of the main reference of building software of FLAC3 D numerical simulation software.Which through the construction of data model after major differences around the foundation pit excavation of surrounding buildings caused by deformation data as well as the deformation of foundation pit precipitation of surrounding buildings caused by a comprehensive analysis,at the same time around the foundation pit precipitation and excavation at the same time when the building deformation data and actual testing of comprehensive analysis of the relationshipbetween the building deformation data,finally it is concluded that at the same time a foundation pit excavation and foundation pit precipitation of building deformation data and the actual testing data convergence.This is supposed to want to combine for the calculation of foundation pit design aspects of foundation pit precipitation and excavation considering the environment at the same time.