吹填土预处理场地砂石桩施工技术  

Construction Technology of Sand Gravel Pile in Dredger Fill Pretreatment Site

作　　者：谢文璐 XIE Wenlu(China Gezhouba Group Municipal Engineering Co.,Ltd.,Yichang,Hubei,443002,China)

机构地区：[1]中国葛洲坝集团市政工程有限公司,湖北宜昌443002

出　　处：《工程建设（维泽科技）》2021年第6期99-101,共3页Engineering Construction

摘　　要：吹填土预处理场地易出现多元地质情况,呈现软弱不均结构,振动沉管砂石桩在在硬质地层中可靠性差,容易被硬质地层磨坏甚至掉落,在淤泥层中又易出现活瓣不易打开,碎石出管困难,反插次数增加,成桩时间长等问题。通过改进活瓣桩靴,保证砂石桩成桩质量,提高成桩功效,确保复合地基承载力满足设计要求。The dredger fill pretreatment site is prone to multiple geological conditions,showing a weak and uneven structure.The reliability of Vibro immersed sand gravel pile in hard stratum is poor and it is easy to be worn or even dropped by hard stratum.In the silt layer,it is easy to have problems such as valve not easy to open,gravel difficult to get out of the pipe,increasing the number of reverse insertion and long pile forming time.By improving the valve pile shoe,the quality and efficiency of sand stone pile can be ensured and the bearing capacity of composite foundation can meet the design requirements.

关 键 词：吹填土 砂石桩 桩靴 硬质地层 淤泥层 

分 类 号：TU753[建筑科学—建筑技术科学]