深厚软土地区超长钻孔灌注桩桩长优化工艺研究

Research on optimization technology of pile length of super long bored cast-in-place pile in deep soft soil area

文章针对深厚软土地区的超长钻孔灌注桩桩体长度优化问题进行研究,结合类似工程的实践经验,对施工技术的特点、施工单位的施工水平等影响因素进行分析。以温州市域铁路S1线一期工程灵昆车辆段B标为案例,对钻孔灌注桩的桩体长度进行优化。通过研究得出:结合桩体的极限承载力静载试验数据,对灌注桩的长度进行优化可在一定程度上降低工程成本。

This paper is mainly about the research and analysis of the optimization of the length of the super-long bored cast-in-place pile in the deep soft soil area,combined with the practical experience of similar projects,the research and analysis of the characteristics of the construction technology,the construction level of the construction unit and other influencing factors.Taking Section B of Lingkun Depot of Phase I Project of Wenzhou City Railway Line S1 as a research case,the length of bored piles is optimized.Through research and analysis,it is concluded that the length of cast-in-place pile can be optimized in combination with the static load test data of the ultimate bearing capacity of the pile,which can reduce the engineering cost to a certain extent.