某项目提高钻孔灌注桩孔壁稳定时间措施

摘要

Taking pile foundation engineering of south Meilong commercial community of Minhang district in Shanghai city as an example,in light of bored pile design construction requirements,combining with the field geology conditions and construction technology demands,the paper analy-zes construction technology parameters in light of hole wall instability owning to long project hole casting time,and finally improves the hole wall stabilizing time through rationally controlling mud weight.%以上海市闵行区梅陇南方商务区项目桩基础工程为例，针对钻孔灌注桩设计施工要求，结合场地地质条件以及施工工艺要求等特点，对该项目成孔后待灌时间较长，引起孔壁失稳的现象作了研究，并分析了施工中的技术参数，通过合理控制泥浆比重的技术措施有效提高了孔壁稳定时间。