迄今为止,桩的承载力都是根据 N·M·格尔西万诺夫方程式用打桩数据确定的。然而。在有些情况下,桩的设计承载力同实际值相差很大。苏联地基与地下结构研究所对桩的贯入度进行了试验研究。用应变计就桩的表面摩擦力和桩尖阻力对打桩和静载下的土壤阻力进行了比较。研究了打桩时土壤阻力的粘性分量及其与不同土内打桩过程中诸特性的关系。试验证明,桩尖粘性阻力与打桩速度成正比。试验数据 So far, the bearing capacity of piles has been determined based on the N.M. Gersivanov equation using piling data. however. In some cases, the designed bearing capacity of the pile is very different from the actual value. The Institute of Foundation and Underground Structure of the Soviet Union conducted experimental research on the penetration of piles. With the strain gauge, the surface friction and pile tip resistance of the pile were compared to the soil resistance under pile driving and static loading. The viscous component of soil resistance during piling and its relationship with various characteristics in the process of piling in different soils were studied. Tests have shown that the pile tip viscous resistance is proportional to the pile driving speed. Test Data