Improvement of soil plate-bearing test of drilled pile foot during bridge support construction

Purpose: The aim of this work is the construction of bridge structures on a soil foundation with physical and mechanical characteristics, often differing from survey activity parameters. Technical regulations of bridge supports envisage plate-bearing test of drilled pile foot.Design/methodology/approach: The quality improvement of not only plate-bearing test preparation, but also requirements for structural reliability, the approximated Ritter-Rassokhin method with different soil behavior under normal conditions with regard to foundation uplift, which allows calculating the maximum draft and other design parameters of soil.Practical implications: The obtained results make it possible to clarify the work regulations for plate-bearing test.