长短间隔悬臂现浇薄壁管桩基坑支护设计与施工  

Design and Construction Technology of Foundation Support with Long-short Cantilever Cast-in-place Thin-wall Concrete Pipe Pile

作　　者：徐佩林 傅红玉 陈林 

机构地区：[1]温州中城建设集团有限公司,浙江温州325000

出　　处：《施工技术》2011年第7期24-27,共4页Construction Technology

摘　　要：在某软弱土地基工程中采用长短间隔悬臂现浇混凝土薄壁管桩作为基坑支护结构,将沉管灌注桩改为内外两层钢套管,成桩过程中钢套管起着模板、护壁、振捣和挤压密实等多重作用,沉桩过程部分挤土从沉管出泥孔排出,桩端没有沉渣,使桩体能更好地发挥承载能力,保证边坡的安全。长短不规则间隔布桩,在保证工程质量的同时降低了成本,取得了较好的经济效益。Long-short cantilever cast-in-place thin-wall concrete pipe pile is adopted for support structure in some soft soil foundation engineering. Driven cast-in-place pile is instead of steel sleeve including two layer which is used as formwork, wall protection and vibrating. In pile driving process, some soil is discharged and there is no sediment in pile end which ensure the pile bearing capacity and safety of slope. The interval distribution of piles with different length not only reduces cost but also ensures engineering quality.

关 键 词：现浇薄壁管桩 长短桩悬臂挡墙 软弱土 质量保证措施 基坑监测 

分 类 号：TU753.3[建筑科学—建筑技术科学]