抄録
The authors performed statistical analysis of the data obtained from vertical loading test conducted on 14 kinds of 192 screw piles which were applied to The Building Center of Japan. The effects of the position of wing (pile shaft or pile tip), the shape of wing (helical plate or flat plate) and the shape of pile tip (closed end or opened end) upon the spring constant at toe of screw piles were discussed. And further, the equation of load - settlement curves of screw piles were compared to those of cast-in-place concrete piles of AIJ and BCS.
