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对灌浆锯齿形单节理在压剪情况下的变形特性及峰值抗剪强度进行了数值试验研究.首先对数值模拟中涉及的模型网格、材料力学特性及接触面模拟问题进行了分析;在此基础上,对数值试验的精度和正确性进行了检验;最后,对灌浆锯齿形单节理在圧剪情况下的变形破坏进行了数值试验,重点针对灌浆充填度、起伏角和法向压应力等因素对于灌浆节理峰值抗剪强度的影响进行了分析,提出考虑各因素综合影响的抗剪强度经验公式,成果对进一步研究实际灌浆节理的抗剪强度具有理论指导意义,对实际工程也具有参考价值.
The deformation and peak shear strength of grouted zig-zag single joints under the condition of pressure-shear are numerically studied.Firstly, the problems of model grid, material mechanics and interface simulation involved in numerical simulation are analyzed. Based on this, the accuracy and correctness of the numerical test are tested. Finally, the numerical experiment is carried out on the deformation and failure of grouted zig-zag single joints under the condition of scissor shear. The key points are grouting filling degree, undulation angle and normal compressive stress The influence of factors on the peak shear strength of grouting joints is analyzed and the empirical formula of shear strength considering the comprehensive influence of various factors is put forward. The results provide theoretical guidance for further study on the shear strength of the actual grouting joints and also have reference value for practical engineering .