Abstract
Integral abutment bridges are becoming popular because the elastomeric bearings are eliminated, which can reduce the construction and maintenance costs. However, the girder displacement due to environmental thermal forces is directly cope by the pile foundation which can increase the pile stresses and bending moment significantly. Pre-bored pile foundation system can be used to improve the pile flexibility using a pre-bored hole that is filled with elastic materials, but the behaviour of soil-pile interaction on this system is still rarely explained. In this study, the effectiveness of filler material properties such as soil grain size and density were examined to reduce the pile cracking possibility effectively. An experimental study will be performed using single pile model test. The behaviour of ground soil and filler material due to cyclic lateral loading was performed using macro-scale testing to evaluate the effectiveness of this system. Results were presented in the form of cyclic load-displacement curves and normalized bending moment charts against pile depth and cycle time for each soil properties. The appropriate filler properties and dimension of this system are expected to reduce the bending moment along the pile due to lateral displacement loading which can solve the problem on the integral abutment bridge foundation.
