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提出将土颗粒周围的结合水膜纳入有效应力承压面面积的想法。基于结合水膜承压面的力学计算模型,得出推广的土中有效应力方程。结合渗透系数的物理意义及殷实的试验数据,建立所提出的新物理参数水道率与渗透系数的拟合方程。根据莫尔–库仑强度理论,得出考虑地下水作用的强度指标,在此基础上给出一个可以统一水土分算和合算的算法。实现水土压力分算和合算结果之间的过渡,使水土压力与土的基本物理力学性质更广泛地联系起来,对全面、系统地研究黏性土的土力学问题有重要意义。
The idea of incorporating the water film surrounding the soil particles into the area of the effective stress bearing surface is proposed. Based on the mechanics calculation model of water pressure bearing surface, a generalized soil effective stress equation is obtained. Combined with the physical meaning of permeability coefficient and well-tested data, a fitting equation of the new physical parameters of water rate and permeability coefficient is established. According to the Mohr-Coulomb strength theory, the strength index considering the effect of groundwater is obtained, and on the basis of this, an algorithm is provided that can unify the calculation of soil and water. Realizing the transition between the calculation of water and soil pressure and the result of cost-effective, making the relationship between water and soil pressure and the basic physical and mechanical properties of soil more extensively linked, it is of great significance to comprehensively and systematically study the soil mechanics of cohesive soil.