摘要
以深圳某超高层建筑(29层)桩基工程施工为例,重点介绍了现浇竹节形-泥浆护壁成孔灌注桩的设计与施工方法,该超高层建筑桩基工程设计采用的桩体抗拔承载要求高,设计采用泥浆护壁成孔灌注成桩并结合"逆向扩孔,逐段注浆"的方法进行现浇竹节形-泥浆护壁成孔灌注桩的施工,有效解决了较高抗拔承载力设计难等问题,施工过程中成桩质量好,地基承载力高。
Taking the pile foundation project of a 29-floor building in Shenzhen as an example,this paper emphatically introduces the design and construction method of cast-in-situ bamboo-shaped slurrysupported bored piles. Due to the high requirement of the uplift capacity of piles in this super high-rise building,the project adopted slurry-supported bored pile combined with the construction method of‘counterboring in reverse,grouting by segment＇to construct the cast-in-situ bamboo-shaped slurrysupported bored piles,which effectively solves the difficult design problem of relatively high requirement of anti-pulling capacity. As a consequence,this project has good pile forming quality and high bearing capacity of foundation.
作者
高路恒
李平
GAO Luheng LI Ping(Jiangsu Institute of Engineering Technology, Nantong, Jiangsu 226007, Chin)
出处
《施工技术》
CAS
北大核心
2017年第20期42-44,共3页
Construction Technology
基金
住房和城乡建设部科学技术项目基金(2016-K4-070)
江苏省高校自然科学研究面上项目(16KJB610015)
关键词
高层建筑
现浇竹节桩
灌注桩
逆向扩孔
施工技术
tall buildings
cast-in-situ bamboo pile
cast-in-situ pile
counterboring inreverse
construction
