无论动、静触探都是一个复杂的物理现象过程。等速贯入的静力触探过程中,任一瞬间,土体内受影响的各点所处的应力状态(应力水平)相差悬殊,有的部位早已处于土的极限平衡状态,而有的部位却仅受极微影响。土体中既有压缩,又有剪切变形,还有塑性流动。不仅土的应力——应变特性复杂,而且边界条件中不确定的因素也很多,使从事触探研究的人对此感到棘手。几十年来,不少研究者试图把土简化为若干种理想的力学模型(如纯弹性、弹塑性、刚塑性和粘弹性等),在研究触探比贯入阻力与土的力 No matter whether moving or static touch is a complicated physical phenomenon process. During the static penetration penetration process at constant velocity, the stress state (stress level) of the affected points in the soil is very different at any moment, and some sites are already in the limit equilibrium state of soil, and some sites It is only slightly affected. There are both compression, shear deformation, and plastic flow in the soil. Not only is the soil’s stress-strain property complex, but there are also many uncertain factors in the boundary conditions, which makes people engaged in penetrating research very difficult. For decades, many researchers have tried to simplify the soil into several ideal mechanical models (such as pure elasticity, elastoplasticity, rigid plasticity, viscoelasticity, etc.), and to study the penetration penetration resistance and soil strength.