使用钢管桩基础快速抢建铁路深水便桥,具有构件通用,抢修方便,结构可靠,施工简易等优点,符合桥梁抢修的技术要求。一、钢管单桩的轴向极限承载力在钢管桩打入土内时,土从桩底开口部分进入管内,逐渐将桩嵌固。由于土严密地堵住桩底入口,所以钢管桩的轴向极限承载力是由管内、外产生的极限支持力所组成。 The rapid use of steel pipe pile foundation to seize the railway deep-water bridge, with components common, easy repair, reliable structure, easy construction, etc., in line with the technical requirements of the bridge repair. First, the axial ultimate bearing capacity of steel pipe pile In the steel pipe into the soil, the soil from the bottom part of the opening into the pipe, and gradually pile embedded. Due to the tight sealing of the pile bottom entrance, the ultimate bearing capacity of the steel pipe pile is composed of the limit support force generated inside and outside the pipe.