Field Studies on Effect of Jacked Pile on Adjacent Buildings and Roads in Clay

When jacked piles are installed, horizontal and vertical movements develop in the soil surrounding the piles. These movements will tend to develop the displacement in adjacent buildings and roads that have already been built. This paper presents a synthesis of the field measurements obtained in a series of pile installations. The field test was preformed at the HaiYan city in China. The test project included lateral ground deformation, vertical surface displacement, soil excess pore pressure and displacement of adjacent buildings and roads induced by jacked piles. For the project, some measures such as prebored hole and groove were taken in order to decrease the compacting effects on buildings and roads in the vicinity. The results show that the prebored holes and groove to relax stress were effective measures against the compacting effects of pile installation.