The Finite Element Analyse On Stability And Internal Forces Of Composit Soil Nailing

Along with the urban construction high speed development, high level,the extra-high building project increase day by day, and the construction scale expands too. Since has entered for the 90's, because inconstruction structure and use request, structure excavation depth turns more and more deep, excavates the area more and more to be also big,the excavated for building foundation depth develops the present more than 20 meters depth from original 5m about.Due to the complexity and uncertainty of deep excavation,Information Construction of the whole construction process into deep excavation, which are indispensable tool, which can feedback. to the timely design deficiencies, and to take timely remedial measures.My paper discusses the development and study of soil nails Support application. Supporting the role of composite soil nailing bearing mechanism, Stability analysis for a more integrated preliminary exposition. In Beijing, as a practical example, valuesimulation using the finite element method of pre-stressed anchor composite soil nailing supporting form valuesimulation in order to study of major mechanical properties, deformation of excavation, and the rule of the axial force. Combined with this project on the monitoring results of the finite element analysis results, the theoretical analysis was reasonable.Indicated with the actual result comparison, the result of valuesimulation to the pre-stressed anchor which one of composite soil nailing forms shows the distortion of excavation basicallytallies to the actual result.The finite element analysis result is effective and feasible.It has provided the theorybasis and the design reference for the next work.