BEARING CAPACITY FORMULAE FOR NODAL BASE OF NODULAR CAST-IN-PLACE CONCRETE PILE

Abstract

The ultimate bearing capacity formulae for nodal base of nodular cast-in-place concrete pile were led using axisymmetric analytical model based on rigid-plastic theory. In this model ratio of projecting width of node to radius of pile shaft and earth pressure in circumferential direction were considered, so the formulae are useful for calculating the ultimate bearing capacity of circular base of nodular pile. The propriety of the formulae were examined by comparing the calculated values with the results of vertical loading tests on model nodular piles.