Deformation Characteristics Of Deep Foundation Pit

Deep foundation pit supporting structure engineering as an important branch of geotechnical engineering,rich theory and practical strong comprehensive interdisciplinary.Although a lot of theory has been quite mature,but it remains to be development.Due to the development of deep foundation pit supporting engineering in China is relatively short,the theory research,the design method,construction experience,organization management,the regional environment is different,so the foundation pit engineering accidents happen occasionally,the accident harm is great,bring immeasurable losses of the state and people.Foundation pit engineering should be paid great attention to safety problems,therefore,continuously improve the level of the theoretical level of foundation pit engineering and construction,make full use of selected to monitor the quality of foundation pit monitoring equipment,monitoring data shall timely feedback,the designer,and contractor for monitoring data should be enough attention.This article first introduced the common types of retaining structure,analyzes the advantages and disadvantages of various kinds of supporting structure,and introduces the possibility of damage.Then introduces the design of retaining structure,the need to pay attention to matters as well as the main content of the design.Then analyzes the foundation pit in construction process,may produce the deformation,and the time effect of deformation of foundation pit.Based on the case of a foundation pit engineering cases,and puts forward the foundation pit support plan and monitoring scheme of foundation pit.Analyzed the foundation pit monitoring of horizontal displacement of retaining structure of foundation pit,the change of displacement of deep soil and anchor stress,in foundation pit construction process are analyzed,the reason of local deformation of foundation pit is too big.Finally,a numerical simulation of the selected the excavation section is analyzed under various conditions of foundation pit horizontal displacement,subsidence,and changes of anchor cable stress.Hope that through the analysis of engineering cases,can provide reference for future similar projects.