Effect of Rigidity of Plinth Beam on Soil Interaction of Modeled Building Frame Supported on Pile Groups
Abstract: This paper presents
the effect of rigidity of plinth beam on a model building frame supported by
pile groups embedded in cohesionless soil (sand) through the results of static
vertical load tests. The effect of rigidity of plinth beam on displacements and
rotation at the column base and also shears and bending moments in the building
frame were investigated. In the analytical model, soil nonlinearity in the
axial direction is characterized by nonlinear vertical springs along the length
of the pile (t-z curves) and at the tip of the pile (Q-z curves) while in the
lateral direction by the p-y curves. Results revealed that, shear force and
bending moment values which were back calculated from the experimental results,
showed considerable reduction with the reduction of the rigidity of the plinth
beam. The response of the frame from the experimental results is in good
agreement with that obtained by the nonlinear finite element analysis.
Keywords: Building frame,
cohesionless soil, nonlinear analysis, plinth beam, soil structure interaction
Author: Ravi Kumar Reddy, C.,
Gunneswara Rao, T.D
Journal Code: jptsipilgg140021
