SM47-YB1K-E The main function of the strain sensor is to determine whether the vertical compressive bearing capacity of the pile meets the design requirements. When the high strain method is used to determine the defects such as the horizontal integrated gap of the pile shaft and the prefabricated pile joint, it can reasonably determine the degree of defects on the basis of finding out whether these "defects" affect the vertical compressive bearing capacity, which can be used as a supplementary verification method for the low strain method. In some areas, it has become a common practice to use the high strain method to increase the sampling frequency of bearing capacity and integrity. Characteristic