一、动载测桩的原理和方法动载测桩的方法基本上可以分为两大类。一类是对桩所施加的动态荷载具有很大的能量,足以使桩身产生一定数量级(mm)的位移,桩身结构在承受动态荷载时产生了很高的应变,称为高应变类;另一类则是低应变类,即动态荷载的能量不大,只在桩身上引起了微幅振动。 1.高应变类高应变类中的典型代表是锤击贯入法。它的基本原理和静载试桩类似,仍然是力和 First, the principle and method of dynamic load test pile Dynamic load test methods can basically be divided into two categories. One type is that the dynamic load applied to the pile has a large amount of energy, which is enough to cause the displacement of the pile to a certain degree (mm). The pile structure produces a very high strain when subjected to dynamic loads, which is called high strain. The other type is low-strain, which means that the dynamic load has little energy and only causes slight vibration in the pile. 1. A typical example of a high-strain, high-strain, hammer penetration method. Its basic principle is similar to that of static load test piles. It is still force and