钻孔灌注桩桩位偏差分析人们普遍认为，对于泥浆护壁成孔的灌注桩桩位是靠成孔前成批埋设的护筒予以保证的。然而，大量实践表明，施工中仍会出现桩位偏差超出规范值的现象。因此，有必要对钻孔灌注桩桩位偏差进行分析。１桩顶标高与天然地面平齐时的桩位偏差分析上海市标... Analysis of the deviation of bored cast-in-place piles It is generally believed that the piles of bored cast-in-place piles for mud retaining wall are guaranteed by the pre-hole forming bushings. However, a large number of practices have shown that there is still a phenomenon that the pile position deviation exceeds the specification value during construction. Therefore, it is necessary to analyze the pile position deviation of bored cast-in-place piles. An analysis of the pile position deviation when the top elevation of the pile is flush with the natural ground...