Experimental investigations of model pile in freezing and thawing of soil ground

Abstract

This paper includes the short report about static load test of concrete piles (cross – section 4×4 cm and length of 60 cm) in seasonally freezing soil. Based on theoretical methods was calculated the ultimate load-carrying capacity of a pile by a simple equation as the sum of the load carried at the pile point plus the to frictional resistance (skin friction). There are several methods for the determination of the bearing capacity factors. In this paper use Meyerhof’s method, which includes the calculation of ultimate point bearing capacity of a pile in sand and reaches a maximum value at an embed demonstration and also was calculated the ultimate frictional resistance in sand. Based on the values obtained was calculated the allowable pile load. According to Kazakhstan Standard, a safety factor (FS) of SLT is 1.2. In conclusion was presented analysis results of estimation of the bearing capacity of pile foundations in seasonally freezing soil ground.