Optimization Of Soil-nailing Length On Deep Foundation Excavations And Program Design

Along with the high speed development of modern architecture, and the widen scope of build, many new technique and new method are come forth in the engineering field of deep foundation pit shoring, among of them, soil nailing shoring is a economical, reliable, shortcut and handy shoring technique. So it has rapidly found application and dissemination in our country, and lots of experience in actual works. But the theory research of this technique still not opportune, its theory research is drop behind practice.Based on the past research, this paper bring forward a method to find the optimization soil-nailed length based on the computer method of use geometric parameters to define the position of the critical slip surface and the mechanism of search soil-nailed length, and give the position of critical slip surface and its safety factor. Analysis the result, the method is credibility and stabilization and optimization soil-nailed length in reason.In this paper, a new integral method is proposed to resolve the stability of soil nailing based on the integral method of the Sweden finite slice method. Use this integral method advance precision and efficiency of calculation process.Compiles the program in Visual C++ language. The impacts of timbering parameter on soil nailing stability and optimization soil-nailed length are analyzed. This paper could be used in the projects.