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基于球形颗粒理想化最松散堆积模型,研究了弹性条件下外加静水压力和粒间吸引力对非饱和土变形和强度的不同影响.研究表明,对于变形问题,外加静水压力引起的变形包括颗粒缺位体积和弹性变形2部分;粒间吸引力引起的变形只包括颗粒的弹性变形.因此,在粒间吸引力作用下土体的体变要大大小于等值外加静水压力作用下产生的体变.对于强度问题,主要研究了摩擦力和咬合力.对于前者,2种加荷方式都有作用,但外加静水压力的作用要大于粒间吸引力的作用;对于后者,外加静水压力有增强作用而粒间吸引力则没有.
Based on the idealized and loosely packed model of spherical particles, the effects of applied hydrostatic pressure and interparticle attractive force on the deformation and strength of unsaturated soils under different elastic conditions are investigated. The results show that the deformation caused by applied hydrostatic pressure includes the lack of particles Bit volume and elastic deformation 2. The deformation caused by the interparticle attraction only includes the elastic deformation of the particles, so the volume change of the soil under the intergranular attraction is much smaller than that under the same applied hydrostatic pressure For the problem of strength, the friction and bite force are mainly studied. For the former two kinds of loading methods all have effect, but the effect of applied hydrostatic pressure is greater than the effect of intergranular attraction force. For the latter, the applied hydrostatic pressure is enhanced The role of intergranular attraction is not.