Design and construction of pile-sinking preventive measures of static pressure piles
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摘要: 在长三角等饱和软黏土地区,静压桩在压桩过程中会产生比较明显的挤土效应,会对周边土体、已建建筑和周边环境产生不良影响。结合上海地区某工程静压桩实际施工工况,针对沉桩对周边道路、管线和已建建筑等的影响,提出相应的沉桩防护措施,同时根据周边环境对沉桩流程进行了具体划分并在沉桩过程进行了有效的信息化监测。监测结果表明,通过采取上述防护措施,有效减少了沉桩对周边环境的影响,沉桩挤土效应造成的周边道路、管线和已建建筑等的变形均在可控范围内,未造成不良影响。Abstract: The soil squeezing effects caused by the static pressure piles in saturated soft clay ground such as Yangtze River delta will bring severe negative influence on the environment including the soils around the piles, the nearby building and so on. Based on an example of static pressure piles in Shanghai, some pile-sinking preventive measures are proposed in order to avoid the soil squeezing effects on the roads, pipelines and buildings. Meanwhile, the process of pile-sinking is plotted carefully and the informatization monitoring is employed in the process. The monitoring results show that the preventive measures are useful, the deformations of the roads, pipelines and buildings are controllable, and there aren’t any soil squeezing effects.
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