钻(挖)孔灌注桩基础近年来在铁路桥梁上已逐步推广使用,特别是钻孔灌注桩已获得广泛推行。因其施工设备比较简便,进度快,一般情况较经济,能够代替深基础,颇受工程技术人员欢迎,是我国建桥工程中的一项新技术。最近几年,在设计理论和施工方法上,许多单位进行了研究改进,并进行了桩的现埸荷载试验,取得了不少对改进钻孔灌注桩计算有重要意义的成果。为了配合这项新技术的推行,我们通过对国内外有关灌注桩计算资料的学习研究,结合铁路、公路桥规改革中有关规范条文,并吸取了各有关单位的经验,专门进行了铁路桥梁高桩承台灌注桩计算算例的工作,以供桥梁工作者参考,计算的主要方法为“桩柱基础计算法” (简称“m法”),并与一般高桩承台计算法(“K法”)计算结果进行了 Drilling (digging) bored pile foundation in recent years has been gradually promoted the use of railway bridges, especially bored piles have been widely implemented. Because of its construction equipment is relatively simple, fast progress, the general situation is more economical, can replace the deep foundation, popular engineering and technical personnel, is a new technology in bridge construction in China. In recent years, many units have conducted research and improvement on design theory and construction methods, and have carried out tests on the load of piles. Many achievements have been made that are of great significance for improving the calculation of bored piles. In order to cope with the implementation of this new technology, we have studied and studied the calculation data of bored piles at home and abroad, combined with relevant norms in the railway and highway bridge regulation reform, and learned the experience of all relevant units, Pile cap pile calculation example of the work, for the bridge workers reference, the main method of calculation for the “pile foundation calculation method” (referred to as “m method”), and with the general calculation of high pile cap (“K Act ”) The calculation results were carried out