Effect of a shock pulse shape on hollow pipe driving in soil: The field studies

Abstract

Abstract This pilot research is aimed to advance vibropercussion driving of steel casings in soil in construction of underground utilities. The goal is to find mechanisms of fill of the casing tube with soil under different-shape shock pulses. The influence of the impact energy structure (shock pulse shape) is theoretically related with efficiency of hollow rod penetration in soil. The quantitative estimate of fill on the tube interior with soil uses a dimensionless fill factor. The influence of the tube diameter on increment in the soil plug length is demonstrated in terms of different percussive machines with different impact energies. The authors present a test bench and a procedure of the field research in various ground conditions, interpret the obtained data and compare them with the earlier results, both own and foreign.