钻孔灌注混凝土桩(以下简称钻孔桩)是铁路桥梁施工中的一项新技术,是在党的鼓足干劲、力争上游、多快好省地建设社会主义总路线的精神鼓舞下而涌现出来的新技术。1965年以来,我们在京×、通×铁路修建中,在“鞍钢宪法”的光辉照耀下, 自力更生,艰苦奋斗,开展群众性的技术革新运动,较成功地推广了钻孔桩基础。几年来我们在山区及平原地区计修建钻孔桩桥梁基础177个,灌注钻孔桩683根,总延长13106米。实践证明钻孔桩可以在浅水河床穿越各种地层修建较深的桥梁基础,可以解决明挖、打入桩、沉井基础难以施工的问题。钻孔桩与明 Bored and poured concrete piles (hereinafter referred to as bored piles) are a new technology in the construction of railway bridges and emerge from the inspiration of the Party’s efforts to boost the upper reaches and strive for the higher order and faster, better and more economical construction of the general line of socialism new technology. Since 1965, in the construction of the Beijing-Xx-Tongxun Railway, we have relied on our own efforts to carry out the masses’ technological innovation movement under the brilliant “Angang Constitution” and successfully promoted the foundation of the bored pile. Over the past few years, we have built 177 bored piles and bored piles in the mountainous and plains areas, with 683 bored piles, with a total extension of 13,106 meters. Practice has proved that bored piles can be built in shallow riverbed through various strata to build a deeper bridge foundation, which can solve the problems of open digging, driving in piles and difficult caisson construction. Bored pile with bright