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土钉对土体(岩体)边坡的支护功效是十分显著的。基于断裂力学原理,提出了关于土钉支护体系作用机理的力学新方法,分析和解释了土钉筋材在边坡土体(岩体)剪切过程中的阻裂机理。其不仅形象地揭示了土钉阻止裂纹发展进而控制边坡贯通滑面形成的过程,而且借助裂纹尖端的应力强度因子,从数学层面上研究了土钉支护体系对边坡稳定的贡献度,实现了对土钉支护体系作用机理的定量分析。通过工程实例验证了所提出的力学方法的正确性。
Soil nailing on soil (rock mass) slope support effect is very significant. Based on the principle of fracture mechanics, a new mechanics method about the action mechanism of soil nailing support system was put forward, and the mechanism of soil nailing in the shear process of slope soil (rock mass) was analyzed and explained. Which not only vividly reveals the process of soil nailing to prevent crack development and then controlling the formation of slope through sliding surface, but also studies the contribution of soil nailing system to slope stability from the mathematical level by means of the stress intensity factor of crack tip, The quantitative analysis of the mechanism of action of soil nailing system was realized. The correctness of the proposed mechanics method is verified by engineering examples.