Abstract
The low strain reflected wave method is used to detect the integrity of pile foundation of a domestic bridge, and various types of defective pile models are constructed. A large number of tests are carried out to analyze the complete pile installation and different defects. At the same time, considering the influence of pile material properties, soil parameters around the pile, boundary conditions and damping coefficient on the reflected wave, the test results are compared with the numerical simulation results. The results show that: low strain detection technology is convenient and easy to operate, but due to its own limitations, it should be combined with numerical simulation and other methods to learn from each other, comprehensive analysis, in order to better judge the integrity of the pile.
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