Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) SATO Takahiro and HARADA Takeo and IWASA Naoto and HAYASHI Satoshi and OTANI Jun,Effect of shaft rotation of spiral piles under its installation on vertical bearing capacity,Japanese Geotechnical Journal,1880-6341,The Japanese Geotechnical Society,2015,10,2,253-265,https://cir.nii.ac.jp/crid/1390282680233224832,https://doi.org/10.3208/jgs.10.253