Application of the Low Strain Method to the Nondestructive Detection of the Integrity of Highway Bridge Rock-Socketed Piles

摘要

Rock-socketed piles is applied in the highway bridge more and more in China, because it has a wide range of advantages, including high bearing capacity, easy construction and low cost. As low strain method has the properties of easy-performing and quick-testing, it has been used widely in the detection of pile integrity. In this paper, the mechanism of low strain method is introduced firstly, on the basis of which the typical time domain curves of different rock-socketed piles are analyzed, and then the integrity of the highway bridge piles is evaluated.