因为门机轨道梁所处位置下方的淤泥质土层顶埋深1~2m,厚度1.5~2.0m左右,关键在于变更后桩身需要穿过淤泥质土层进入非淤泥质土层,或者对该土层进行换填处理。在综合考虑施工难度、工程造价、施工周期等因素后,设计单位提出采用水泥搅拌桩地基处理方法替代原松木桩复合地基。 Because the gob-soil layer below the position where the gantry crane beam locates lies 1m to 2m and the thickness is about 1.5 to 2.0m, the key point is that the pile body needs to pass through the muddy soil layer into the non-muddy soil layer after the change or The soil for replacement processing. After comprehensively considering such factors as construction difficulty, construction cost and construction period, the design institute proposes to use cement mixing pile foundation treatment instead of the original pine stump composite foundation.