Deep Foundation Pit Of A Practical Project In Dalian Area Excavation And Support Measures

With the dawning of the 21 century,the population is increasing and the urbanization process is speeding up,more and more people are moving to cities in the process of China’s modernization.Urban expansion and high density has become inevitable in the migration process.Because of that,Rail transit and high-rise buildings has become the best solution of traffic congestion and improving of landuse efficiency.They are the future and the trend of cities’ development.So,to face the construction conditions in the city which are getting more and more complicated,more and more deep foundation engineering are adopted by the design in the construction of rail transit and high-rise buildings.The deep foundation pit ensures the smooth progress of the project in the face of harsh construction conditions,in the meantime,it could be a challenge to the construction technology also.In this paper,the design of retaining structure for a deep foundation pit in Changchun is what’s matters and important.To complete the design and checking calculation of supporting structure for deep foundation pit from theory to practical calculation.The main studying contents are:1.This paper summarizes the types of the deep foundation pit supporting structure and the advantages and disadvantages of each kind,the scope of application,and determines the type of support structure used in the design.2.According to the conditions of the construction site for the preliminary design,according to the norms and the actual situation of the preliminary design,and the arrangement of the construction quality monitoring system and emergency plan.3.Using the deep foundation pit support design software F-SPW(Ver 7),which made by Beijing Lizheng software,to design,calculation and check the stability of the structure.Then,confirm the design.