Abstract. The authors substantiate the necessity of creating a generalized pile model, which would allow obtaining more plausible signalograms of wave processes in reinforced concrete piles. Using currently available models does not allow detecting defects in piles with sufficient accuracy. Several wave models of signalograms are developed, which are based on the finite difference method and take into account different types of oscillatory processes in reinforced concrete piles in the ground. The models are able to describe different types and locations of defects by length of the pile, take into account ground conditions of the construction site, etc. They allow simulating on the signalogram the echo of defects with specified increments. Now it will be possible not only to determine the length of the pile and location of defects, but also to identify small defects (less than 30% of the cross-sectional area of the pile). In the one-dimensional case, the obtained models coincide with those already know, and in three-dimensional case the obtained models are a generalization of the already known ones.

Keywords: identification, defects, pile, reflected waves, numerical simulation.