Description

Axial load carrying capacity bored pile of a typical bridge is calculated. Different methods namely Meyerhof's, Vesic, Janbu's and AASHTO methods are used in this regard. A general purpose finite element program (STAAD Pro. software) has been used for the calculation of pier load resulting from wheel load and lane load. HS 20-44 truck loads are considered here as designed live load. The total vertical load is calculated by summing the dead load, wheel load and lane load. The soil test report prepared by Dhaka Water Development Board is used to determine the various parameters needed for calculating pile capacity. The variables considered for calculating the capacity of axially loaded pile are critical depth, loosening effect of soil, the position of ground water table and also the scour depth. Here factor of safety 4 has been used for Meyerhof's, 3 for Vesic and Janbu's method and 4 for AASHTO method. After obtaining the capacity of axially loaded pile by these methods, the adequacy of that pile has been checked by comparing with the total vertical load transmitted to the pile.