近十余年来,特别是无产阶级文化大革命以来,我国铁路建设部门的广大工人、干部和技术人员在毛主席革命路线的指引下,在钻挖孔灌注桩(以下简称钻挖孔桩)的设计、施工和科研方面取得了很大成绩。这些成绩通过总结已纳入即将颁布的新的铁路桥涵规范(中华人民共和国交通部《铁路工程技术规范》第二篇 In the past decade or so, especially since the Great Proletarian Cultural Revolution, the vast numbers of workers, cadres and technicians in the railway construction sector, under the guidance of Chairman Mao’s revolutionary line, have been making great efforts in drilling the bored pile (hereinafter referred to as the bored pile) Great achievements have been made in design, construction and research. These achievements have been included in the forthcoming promulgation of the new railway bridge culvert specifications (Ministry of Communications of the People’s Republic of China “Railway Engineering Technical Code,” the second