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中国尊大厦超深基坑后注浆钻孔灌注桩施工技术

Kun ZHANG,Lishan XU,Chuang LIU,Yang LIU,Tengli CHEN

Construction Technology（2019）

Cited 5|Views2
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Abstract
中国尊大厦采用后注浆钻孔灌注桩作为桩基础,其桩径和桩深较大,最大单桩承载力极限值达32000kN.通过工程实例,介绍后注浆钻孔灌注桩施工技术,对钻孔灌注桩成孔、水下混凝土浇筑、后注浆等关键施工技术进行详细介绍.结果表明,该施工工艺成功解决了超深旋挖钻孔桩桩底清渣难、成孔垂直度要求高等难题.
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