Application of Magnetic Logging Method in Foundation Pile Detection and Analysis of Influencing Factors
Through the magnetic induction equipment to detect the magnetic field change caused by the magnetic body of the steel cage in a large space around the measuring hole of the foundation pile,the spatial distribution characteristics of the magnetic field intensity change around the magnetic body of the steel cage near the measuring hole of the foundation pile are studied,and the occurrence and scale of the magnetic body of the steel cage are detected,and then the length of the steel cage of the cast-in-place pile or the length of the pipe pile can be analyzed and judged.Combined with the engineering example and the effective test data,the length of the steel cage of the cast-in-place pile and the length of the pipe pile and the position of the pile are compared,and the reliability of the magnetic logging method to test the length of the steel cage of the cast-in-place pile and the length of the prefabricated pile is verified.By comparing the existing relevant specifications in China,some suggestions on the selection of relevant parameters in magnetic logging detection are given.