在现今习用的桩基水平承载力计算方法中,一般均不考虑竖向力的影响,传统的经验表明,这一影响确实不大;为简化计算,略去其影响是允许的。然而,随着桥梁钻孔灌注桩施工技术的发展,过去仅应用于中、小桥跨的单排桩式墩台,在加大直径前提下,现在仍循例应用于大跨径桥,特别是比较高的桩柱上,其竖向力的影响将是很大的。因此,不能由于计算上的复杂性而忽略它,何况今日微型计算机已获得广泛应用,故在桥 In the current calculation method of horizontal bearing capacity of pile foundation, the influence of vertical force is generally not considered. The traditional experience shows that this effect is indeed not large. To simplify the calculation, its influence is allowed. However, with the development of the construction technology of bored piles in bridges, the single-row pile-type piers used in the bridge between medium and small bridges were used in the past. Under the premise of increasing the diameter, the application is still applied to the long-span bridges, especially The higher the pile, the effect of its vertical force will be great. Therefore, it can not be neglected because of its computational complexity, not to mention the microcomputer has been widely used today, so the bridge