超深淤泥质软土中预应力管桩施工质量控制技术研究与应用  

Research and Application of Prestressed Pipe Pile Construction Quality Control Under Ultra-deep Soft Soil Foundation

作　　者：李松晏[1] 梁森 王斌 张明 

机构地区：[1]中国建筑第四工程局有限公司,广东广州510665 [2]中建四局第一建筑工程有限公司,广东广州510656

出　　处：《施工技术》2017年第1期18-20,24,共4页Construction Technology

摘　　要：淤泥质土流动性强、剪切效应明显,桩基施工质量保证难度大,极易造成偏桩、断桩。结合某工程首开区桩基工程实例,阐述了在超深淤泥质土进行桩基施工时会产生的一系列质量问题。并结合分层挖土、纠偏、灌芯等技术手段,给出对不合格桩的处理办法,使成桩质量达到国家规范要求。Muddy soil has obvious effect of flow and shearing,which makes pile foundation engineering difficult. Furthermore,prestressed pipe piles are made deviated and broken easily. In this paper,the quality problems encountered in pile foundation construction in soft soil are illustrated on the base of the first residential district,and some treatment methods such as excavation by layer,deviation correction and PHC core grouting are given to deal with unqualified piles in order to reach state standard demand.

关 键 词：地基 软土 桩基础 管桩 质量控制 纠偏 

分 类 号：TU758.11[建筑科学—建筑技术科学]