大直径灌注桩钢筋笼吊装及灌注成桩施工技术  

Construction Technology of Large-diameter Cast-in-place Pile Reinforcement Cage Hoisting and Cast-in-place Pile

作　　者：邓乃匀 雷斌 李欣霖 DENG Naiyun;LEI Bin;LI Xinlin(Shenzhen Geokey Foundation Engineering Co.LTD.,Shenzhen 518063,Guangdong,China;Shenzhen Geokey Group Co.LTD.,Shenzhen 518063,Guangdong,China;Shenzhen Geokey Construction Group Co.LTD.,Shenzhen 518063,Guangdong,China)

机构地区：[1]深圳市工勘基础工程有限公司,广东深圳518000 [2]深圳市工勘岩土集团有限公司,广东深圳518000 [3]深圳市工勘建设集团有限公司,广东深圳518000

出　　处：《科技和产业》2024年第22期280-287,共8页Science Technology and Industry

摘　　要：目前在大直径灌注桩成桩过程中,安放和固定在护筒顶的钢筋笼和灌注混凝土会持续对护筒叠加荷载,容易导致护筒不同程度的沉降、变形,严重的会引起孔口垮塌,造成灌注混凝土质量事故等难题。为此,研发一种孔口独立作业平台,利用吊环分节吊装钢筋笼入孔并固定,通过定位平台辅助钢筋笼和灌注架快速精准对中就位,将钢筋笼吊放和混凝土灌注等工序集成在孔口平台上完成,达到施工高效、质量可靠、操作安全、成本经济的成效。At present,in the pile-forming process of large-diameter cast-in-place piles,the reinforced cages and pouring concrete placed and fixed on the top of the pile casing will continue to superimpose loads on the pile casing,which will easily lead to the settlement and deformation of the pile casing in different degrees,and seriously lead to the collapse of the orifice and the quality accident of pouring concrete.Therefore,an independent working platform with openings was developed,in which reinforcing cages were hoisted and fixed in sections by using lifting rings,and reinforcing cages and pouring frames were quickly and accurately centered and positioned by positioning platforms,and the processes of hoisting reinforcing cages and concrete pouring were integrated on the opening platform,so as to achieve the effects of high construction efficiency,reliable quality,safe operation and economical cost.

关 键 词：大直径 灌注桩 钢筋笼吊装 孔口平台 施工技术 

分 类 号：TU753[建筑科学—建筑技术科学]