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深基坑土钉支护钉长优化及程序设计
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摘要
随着现代建筑的高速发展,建筑规模不断扩大,深基坑支护工程领域涌现了许多新技术、新方法,其中,土钉支护是一种经济可靠、快捷简便的挡土技术。因此,它在我国得到了迅速的推广和应用,在工程界也积累了相当丰富的经验。但是,这种技术的理论研究还不十分成熟,表现为理论研究落后于实践的状况。
     本文在前人研究的基础上,提出了利用几何控制参数确定最危险滑动面的计算机法结合土钉长度搜索机制搜索最优土钉长度的方法,并给出优化土钉长度下的最危险滑动面及相应安全系数。通过计算表明,该方法稳定可靠,计算得出的优化土钉长度合理。
     本文还在瑞典条分法的积分解法的基础上,提出了适合于简单边坡土钉支护的积分法,有效的提高了计算的精度和效率。
     编制了相应的土钉长度优化程序,分析了土钉各设计参数对土钉支护稳定性的影响和对程序得出的土钉长度的影响,为指导土钉支护在实际工程中的设计应用提供了依据。
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.
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