Design And Numerical Simulation Of Deep Pit Supporting About The Extension Of The First Hospital Of Jilin University

Company with our country urbanized instant development the exploition and utilization of city underground space in saving land resources , regulate city use of land structure ,city modernization basic facilities construct , natural calamities precaution disaster relief and national defense construct grade aspect would exert ingravescent use .It is observed that,without city underground space of validity exploition and utilization moving towards without civic sustainable development,also,in this way,it couldnot help but acquire large-scale deep foundation pit engineering problem ,also to deep foundation pit excavation with shoring puting forward understand even more high ,tighten up of quest.At the same time owing to foundation trench technical zonality ,uncertainty , individual variation sextus or complexity grade point,accident in engineering still build up sometimes,deep foundation pit technical shoring problem became engineering circle of hotspot ,emphases problem .Along with the high-speed development of city construction, a great number of high-rises are constructed together with the exploitation of the underground structure, which surely brings large-scale excavation and support of the foundation pit project. It require monitor safeguard the surrounding buildings, structures, roads and underground pipeline to ensure proper and safe construction, which includes exploration, design, construction, environmental monitoring and feed back works. The foundation pit engineering services located almost all civil engineering areas, such as construction workers, irrigation, ports,highways and bridges, municipal, underground construction and offshore engineering works etc。The foundation is Jilin province of late years the biggest foundation ,there are some built needing shielding .at shoring design proposal whether security , feasible ,prepare suffer attention ,textual research content include there in after several Aspect :1,According to Jilin University first hospital extend foundation of in every direction of physical condition and quest ,assay preexisting data ,comparison other engineering example ,researching different kinds of shoring form toward these technical applicability ,adopting stake anchor shoring and brad wall shoring form .2,In soil horizon parametri choose up ,collecting identically nature unit 45 node engineering geology report c,φproceeding statistics ,considering foundation trench precipitation after spoon sampling factor ,to consolidation sharp scissors c,φproceeding understand relevance modulating .Using that controling in 0.8 times of statistics cost within range. in this way , so as to engineering geological condition even more adjoin practice ,for compose offering insurance .3,To different cutting depth of foundation for each selective preference brad wall ,stake anchor shoring form,adopting different design method of computation proceed design calculation,selective preference producing the greatest economy rational outcome as foundation composing outcome .4,Application of equivalent beam method in foundation pit support design, and checking calculation that stability .5,soil nail of compose adopting the method of limit equilibrium,and checking calculation that stability caming rectification its rationality ,In checking calculation stability hour,adopting understand LiZheng soft ware proceeding contrast checking .6,Structure internalinternal force calculation checking , in calculation arriving at adopting understand computer software procedure– LiZheng soft ware ,proceeding contrast outcome .7,analysis of limiting equilibrium of soil nailing, adopting ANASYS software to foundation slope stability assay as well as side slope horizontal shifting proceed simulation analysis, a new with practice monitoring data proceed contrast ,checking design proposal of viability.the first hospital the Jilin University deep foundation pit engineering proceed understand scheme selecting , computational analysis stabilization checking calculation , and adopting numerical simulation assay ,result and simulation outcome of analysis taking on all-right consistency,explanation should design proposal it is reasonable that , virtual ,for anon uniformity similar engineering offer understand take on definite use value and theoretical research significance.Based on the optimizing method of supporting system of foundation pit and its simplified method, the analysis of the foundation excavation for the first hospital of Jilin University in Changchun has been performed.The result of the analysis coincides very well with the previous realistic design,which shows that the method is reasonable,effective and practicable.