Study On Reusable Working Well Supporting Technology

Pit earth pressure research is mostly based on plane strain analysis，as a resultof a difference between the flat shape and structure off space axisymmetric shape,and it leads to its stress state. At present there are few reference books on Calculationof earth pressure. Researchers prefer the use of slip line method or the limitequilibrium method of circular retaining supporting structure of the earth pressure.Circular support structure could make use of the arching effect of soil to reduce therole of earth pressure on the supporting structure, the external load structure theinternal pressure，and give full play to the circular supporting structure compressiongood performance characteristics.Circular supporting structure becomes more andmore applied to practical engineering.In this paper, LongKeXing non small pitexcavation Engineering Co.Ltd.(working well) standardized support key researchprojects, the use of theoretical analysis, numerical simulation and monitoring of dataanalysis of complex formation under the conditions of inner diameter of5m, theexcavation depth5m force and deformation characteristics of the small diametercircular pit (working well) building envelope and the pit surrounding soil.In accordance with the requirements of construction, a small pit (well) supportshould be able to achieve the effect of convenience and substantially loweringcost (can be repeated recycling),which requires us to consider the strength of thesupporting structure, stiffness and foundation stability, including theoretical research,numerical analysis, field testing. Earth pressure on a small pit is less stressful. Thedisplacement analysis of structural deformation and the surrounding soilenvironment deformation caused by the small diameter circular foundationconstruction small pit outside the earth pressure is basically stable, safe andreliable support structure.In this paper, through the analysis of the existing well support’s work, I intendto explore the earth pressure of the circular pit in the soil and the distribution law ofstress. According to the comparative analysis on the basis of extensive research onthe small pit support at home and abroad and its related technical information through a variety of support technology, and with the numerical analysis and fieldtesting, I introduce the small diameter circular pit support program, especially themain resistance to deformation of the structure, the excavation process simulationand excavation phase of the structural internal force, and submit the support systemoptimization program. Also with the comparative study of other similar engineeringdata, I draw my relevant conclusions.The research results can provide a reference forsimilar small pit construction.