The bearing capacity of a single pile determined by the high-strain dynamic load method refers to the resistance of the rock and soil to the pile caused by the dynamic test pile. Only when sufficient relative displacement between the pile and the soil is generated, can the bearing capacity of the pile be objectively evaluated. Compared with the static load test, the relative displacement between the pile and the soil using the strain method is still a significant distance. Therefore, the single pile bearing capacity determined by it is generally lower than the single pile ultimate load of the static load test (which is safer in engineering), especially when the matching capacity of the hammer and the pile is obviously insufficient, this contradiction is even more prominent.
